Radial sealing structure of rotor engine

Abstract

The invention discloses a radial sealing structure for a rotor engine. The radial sealing structure comprises a radial sealing piece, a trapezoidal sealing groove, a spring piece and a reverse spring piece. The radial sealing piece is mainly composed of sub-sealing pieces, sealing piece side plates and a high-pressure gas guide groove and is provided with 5-12 sets of sub-sealing pieces and the sealing piece side plates on the two sides. The thickness of the sealing piece side plate is gradually reduced from bottom to top, and eight gas guide grooves are formed in the sealing piece side plate and used for introducing high-pressure gas to lift the radial sealing piece. The trapezoid groove is composed of a sealing groove and a mounting bottom plate, the bottom of the sealing groove is a plane, and the two sides of the sealing groove are inclined planes of 85 + / -5 degrees to form a trapezoid structure. And the mounting bottom plate is used for connecting the trapezoidal sealing groove with the stator and dispersing pressure. The spring piece is of an arch-shaped structure, has the curvature with the radius being 60 mm, is composed of four bullet reeds arranged in parallel and two spring piece supporting feet, and provides pretightening force between the radial sealing piece and the rotor. The reverse spring piece is also of an arch-shaped structure and is composed of three secondary reverse spring pieces and two reverse spring piece supporting legs, and additional pre-tightening force is provided. The components work synergistically to ensure that the radial sealing fins are in close contact with the surface of the rotor, prevent air leakage, improve the sealing performance, improve the sealing performance and durability of the rotor engine, reduce friction force and prolong the service life.

Description

Technical Field

[0001] The invention belongs to the technical field of engine radial sealing, and relates to a radial sealing structure of a rotary engine. Background Art

[0002] The rotary engine is a simple, small and light engine that controls compression and discharge through the rotation of the rotor in the cylinder. Compared with other internal combustion engines, the total number of parts of the rotary engine is reduced by 20%-40%, and the number of moving parts is reduced by 40%-60%. The weight of the rotary engine is 50%-70% of that of the reciprocating engine, and the volume is about 30%-50% smaller. Therefore, the cost of the rotary engine is about 80% of that of the reciprocating engine with the same power. But this does not affect the power density of the rotary engine. Compared with the reciprocating engine, the power density of the rotary engine is 60% higher. In particular, the rotary engine performs a rotary piston motion, does not need to withstand excessive inertia force, and the torque is more uniform. These excellent conditions make the torque fluctuation of the two-cylinder rotary engine the same as that of the six-cylinder piston engine, and even the rotation of the two-cylinder rotary engine is smoother and the vibration is less.

[0003] Inadequate sealing performance, high fuel consumption, high emissions, and poor lubrication are issues that must be addressed in the development of rotary engines, and are closely related to the overall improvement of the sealing system. The sealing line of a rotary engine is relatively long, and the optimization of the radial sealing structure is the first consideration in solving the sealing performance problem of a rotary engine.

[0004] The development of radial seals has gone through an evolution process from primary fiber to metal composite, single-layer to multi-layer, with the aim of meeting the increasingly stringent working requirements of mechanical equipment. Early radial seals were divided into integral and single-layer types. The earliest radial seal design was integral, that is, a complete seal covered the entire sealing area. The integral radial seal has a simple structure, poor sealing performance at low speeds, and severe air leakage. In order to improve the sealing performance, a single-layer radial seal is designed to cover the entire sealing area, attempting to reduce air leakage by increasing thickness and material strength. However, the single-layer radial seal did not significantly improve the air leakage problem at low speeds, while increasing friction and wear. The common defect of these two radial seals is that the sealing performance is poor at low speeds, resulting in low engine efficiency; and in stable and transitional conditions, it is difficult to simultaneously meet the requirements of high-pressure gas and alternating operation at different speeds, and it is easy to break and wear.

[0005] Since then, the improvement of the radial sealing sheet has continued, and improvements in different structural positions have been proposed.

[0006] In order to improve the sealing performance of the top of the radial sealing sheet, a three-section combined radial sealing sheet has been developed. The spring force is used to push the small angle pieces at both ends outward, thereby improving the sealing performance under low-speed conditions. The three-section combined radial sealing sheet consists of a middle sheet and two small angle pieces; the middle sheet is located in the center, and there is a small length gap between the two ends and the cylinder head or the middle partition. The two small angle pieces in the three-section combined radial sealing sheet are located at both ends of the middle sheet, forming a three-section structure with the middle sheet; and a spring is provided between the angle pieces, and the spring is located between the two small angle pieces to provide axial outward thrust. The spring force enables the small angle pieces at both ends to push outward to ensure the sealing with the cylinder head or the middle partition. Compared with the early integral type, the three-section combined radial sealing sheet structure can greatly reduce the leakage at the top of the radial sealing sheet, especially the sealing performance under low-speed conditions is improved. However, the defects of the three-section sealing sheet are concentrated in that the middle sheet is easy to break under the action of high pressure and inertia force, and stress concentration and fatigue are the main reasons.

[0007] In order to improve the vibration phenomenon caused by the gas pulsation at the bottom of the radial sealing plate, NSU Company made improvements on the basis of the three-section combined radial sealing plate 1, that is, on the basis of the three-section combined radial sealing plate, a gas guide groove design was added, so that several cuts were made below the leading surface of the middle plate of the radial sealing plate 1. With this kind of sealing plate, even when the sealing plate is in an inclined state, high-pressure gas can be introduced into the bottom of the sealing plate, thereby generating pressure on the sealing plate, making it close to the cylinder profile, so as to achieve the purpose of effective sealing, and trying to eliminate the problem of movement caused by the pulsation change of the gas pressure at the bottom of the sealing plate by opening a cut below the leading surface of the middle plate of the radial sealing plate. Although the cut design improves the gas pulsation problem, there are problems such as uneven airflow path control, uneven pressure distribution and wear under high-frequency vibration, resulting in unstable sealing effect.

[0008] In order to solve the problem of vibration lines on the rotary engine cylinder, the cross-hole radial sealing plate starts with the natural vibration frequency. The cross-hole radial sealing plate has a cross-hole structure inside; by adjusting the natural vibration frequency of the radial sealing plate, the cylinder vibration line phenomenon is reduced. Specifically, the cross-hole design enhances the stability of the radial sealing plate in a high-frequency vibration environment, effectively reduces the pulsation and beating of the radial sealing plate on the cylinder profile, and reduces the vibration phenomenon. Specifically, the natural vibration frequency refers to the frequency of free vibration of an object when there is no external forced vibration. By adjusting the material, shape and cross-hole structure of the radial sealing plate, the natural vibration frequency is mismatched with the external excitation frequency, thereby reducing the resonance phenomenon and reducing the cylinder vibration lines. However. The cross-hole design causes problems of weakened material strength and stress concentration, the sealing effect is reduced under high pressure and high speed conditions, and it is prone to wear and fatigue under high-frequency vibration.

[0009] In order to reduce the mass of the sealing plate and reduce the inertia force and gas force, the upper and lower oblique division three-stage type is designed on the radial sealing plate 1. The thickness of the upper and lower oblique division three-stage radial sealing plate 1 is reduced from 3mm to 2mm, which reduces the mass, gas force and inertia force. The upper and lower oblique division three-stage radial sealing plate is changed from two-stage to three-stage, and the middle plate is obliquely divided into the top and the bottom, and the division angle is 60°. Two leaf springs are arranged below the upper and lower oblique division three-stage radial sealing plate, and the surface contact of the sealing groove is achieved through the wedge effect. Furthermore, the upper and lower oblique division three-stage radial sealing plate can produce two seals. In the first sealing, under the action of gas pressure, the lower part of the sealing plate drives the upper part to move toward the low-pressure side, and the top is kept in contact with the cylinder profile. The second sealing is produced under the wedge effect, and the upper part of the radial sealing plate is inclined along the oblique division surface to prevent gas from leaking through the bottom groove. The drawback of the three-section radial sealing piece with upper and lower oblique divisions is that the inclined surface design causes stress concentration, which is easy to cause material fatigue and fracture especially under high pressure and high temperature conditions, and the wedge effect does not respond sufficiently under conditions of rapid pressure changes.

[0010] In order to optimize the elastic force distribution of the sealing plate, enhance the sealing performance and reduce wear, a double-spring two-stage radial sealing plate is designed. The double-spring two-stage radial sealing plate adopts two single-piece leaf springs (I and II), in which the arch span and height of spring I are greater than those of spring II; this design reduces the size of the sealing plate, reduces the centrifugal force, and reduces friction and wear. Under low elastic force requirements, the smaller elastic force only requires a smaller deformation of spring I to provide the elastic force Fs. In this case, spring II does not participate in the work. Under high elastic force requirements, when the radial sealing plate 1 requires a larger elastic force, the deformation of leaf spring I increases and it can no longer provide sufficient elastic force alone. At this time, leaf spring II begins to deform and provide additional elastic force, and the two work together to provide a total elastic force Fs+Fs'. Furthermore, through the graded operation of the two springs, it is possible to provide appropriate elastic force under different working conditions, optimize the elastic distribution, and ensure that the sealing plate can obtain the best elastic force support under various working conditions. Although the dual-spring design reduces friction and wear, the spring is prone to fatigue fracture under high-pressure and high-speed conditions, and there is still a risk of seal failure under high-frequency gas pulsation conditions.

[0011] During the use of the above five radial sealing plates 1, the technical solutions all have deficiencies and defects. In terms of processing, manufacturing and assembly, the three-section combined sealing plate, double spring design, upper and lower oblique division three-section and other structures are complex, difficult to manufacture and assemble, and may increase costs and failure rates. In terms of material fatigue, the wedge effect and cross-hole design may cause fatigue and fracture of the material under high pressure and high frequency environment, affecting long-term reliability. The elastic response of the double spring design may be inconsistent under different working conditions, affecting the stability of the sealing effect. In terms of elastic response, the wedge effect of the upper and lower oblique division three-section is unstable under different pressures. In terms of wear and friction, although the design intention is to reduce friction and wear, it will still increase wear in certain parts. In particular, new wear points will appear in the three-section combination and cross-hole designs. In terms of gas pulsation processing, the existing technology has limited effect on high-frequency gas pulsation and cannot effectively solve the vibration and vibration mark phenomena.

[0012] A Chinese patent (CN2243543Y) discloses a rotary engine that uses a vane piston with multiple layers of rectangular sheets stacked together, a sinusoidal cylinder, and a smoothly closed annular surface. The sealing of the rotor and the cylinder head of this solution relies on the oil seal and the sealing cavity. Under high temperature and high pressure conditions, the sealing device is prone to aging and wear, which may cause oil leakage or gas leakage. The vane piston is composed of multiple layers of rectangular sheets stacked together. During long-term operation, gaps may appear between the sheets, resulting in a decrease in sealing performance. Due to the complex structure of the inner wall of the cylinder, the sinusoidal cylinder and the smoothly closed annular surface may cause heat load concentration and increase the difficulty of cooling. The sinusoidal cylinder and the smoothly closed annular surface have high requirements for airflow management. If the airflow management is improper, it may affect the efficiency of the intake, compression, combustion and exhaust processes, resulting in a decrease in engine performance.

[0013] Chinese patent (CN110344964A) discloses a radial sealing device for a rotary engine and its application, which adopts a combination of multiple elastic parts and sealing inserts. Among them, the first elastic part and the second elastic part may fatigue or fail during long-term high-load operation, resulting in reduced sealing performance. Due to the contact between the sealing insert and the inner wall of the cylinder, the sealing insert is prone to wear under long-term high-speed operation. The groove and insert design may cause local stress concentration, especially in high-speed operation and high-pressure environment, which may easily cause fatigue fracture or deformation. Although the clearance fit allows some flexibility, the clearance may change due to thermal expansion or wear under high-pressure and high-temperature environment, affecting the sealing effect. When the rotor rotates at high speed, the sealing insert needs to have good dynamic adaptability. Any clearance change or insert loosening may cause instantaneous sealing failure, affecting engine performance and safety. At the same time, during high-speed rotation, the friction and vibration between the sealing insert and the radial sealing sheet 1 may cause increased wear, reduce the sealing effect and increase vibration noise.

[0014] Therefore, existing radial seal design solutions have problems such as weak wear resistance, bulky structure, poor anti-swing performance and low sealing reliability, and there is no reasonable technical solution to enhance the overall performance of the radial seal. Summary of the invention

[0015] The purpose of the present invention is to overcome the defects of the prior art, solve the problems of insufficient sealing performance, wear and fracture, friction debris and poor heat dissipation, and provide a radial sealing structure of a rotary engine to improve the sealing performance of the rotary engine and ensure its efficient operation under various working conditions.

[0016] The radial sealing structure of a rotary engine described in the present invention is realized by the following technical solutions:

[0017] In general, a radial sealing structure of a rotary engine comprises a stator mechanism, a rotor mechanism, a radial sealing sheet 1 and a spring assembly; the stator mechanism has three arc-shaped side walls, which form a three-petal cavity, and a trapezoidal groove 2 is provided at the junction of every two arc-shaped side walls; the rotor mechanism is formed by three sections of arc-shaped side walls to form a three-petal cavity, which is located in the three-petal cavity of the stator, and the outer surface of the rotor contacts with a sub-sealing sheet 101 to form a contact surface between the rotor and the sub-sealing sheet 101, the stator mechanism has three arc-shaped side walls, which form a three-petal cavity, and a trapezoidal groove 2 is provided at the junction of every two arc-shaped side walls; the radial sealing sheet 1 comprises a sub-sealing sheet 101, a sealing sheet side plate 102, a high-pressure gas guide groove 103, and a mounting groove (or mounting hole) is provided at the bottom to accommodate a spring sheet 3 and a reverse spring sheet 4; the radial sealing sheet 1 is installed in the trapezoidal groove 2 of the stator, and the radial The two side surfaces of the sealing sheet 1 correspond to the two side surfaces of the trapezoidal groove, and are fixed to the upper and lower parts of the trapezoidal groove 2 by screws or buckles to prevent displacement; the bottom of the radial sealing sheet 1 is connected to the spring sheet 3 and the reverse spring sheet 4 by a mounting groove or a mounting hole, one end of the spring sheet 3 is fixed to the bottom of the groove, and the other end provides elastic force upward, and the reverse spring sheet 4 provides reverse supporting force, and is fixed to the radial sealing sheet 1 by screws or buckles; the edge shape of the radial sealing sheet 1 is concave or convex to ensure that it can always be closely matched with the rotor operation; the spring group consists of a spring sheet 3 and a reverse spring sheet 4, and the spring sheet 3 and the reverse spring sheet 4 are installed at the bottom of the radial sealing sheet 1 and are closely connected to the contact surface of the radial sealing sheet 1; the spring sheet 3 provides an upward elastic force (initial preload force) to make the radial sealing sheet 1 in close contact with the rotor surface; and the reverse spring sheet 4 provides a reverse supporting force (additional preload force) to ensure that the radial sealing sheet 1 maintains close contact at different operating positions.

[0018] Furthermore, the stator mechanism is provided with a trapezoidal groove 2, which is composed of a sealing groove 201 and a mounting base plate 202, and is arranged at the junction of every two side walls of the three arc-shaped side walls of the stator mechanism. Each stator mechanism includes three trapezoidal grooves 2, which correspond to the connection points of the three arc-shaped side walls respectively; the radial sealing sheet 1 is inserted into the trapezoidal groove 2 of the stator through its side, and the two side surfaces of the radial sealing sheet 1 are completely matched with the two side surfaces of the trapezoidal groove 2; the cross-section of the trapezoidal groove 2 is trapezoidal, and the angle of the trapezoidal groove 2 always corresponds to and remains consistent with the side surface of the radial sealing sheet 1; the trapezoidal groove 2 evenly distributes the high-pressure gas pressure, and the high-pressure gas is guided into the bottom of the sealing sheet through the air guide groove 103 on the sealing sheet side plate 102, thereby increasing the buoyancy of the radial sealing sheet 1; the trapezoidal groove 2 uses a fastening device (such as a screw or a buckle) to fix the radial sealing sheet 1 at the upper and lower parts of the trapezoidal groove to ensure that it is displaced due to rotor rotation or external vibration during operation.

[0019] Furthermore, the radial sealing sheet 1 is composed of a multi-stage sub-sealing sheet 101, a sealing sheet side plate 102 and a high-pressure gas guide groove 103;

[0020] Specifically, the multi-stage sub-sealing sheet 101 is composed of a group of multiple sub-sealing sheets, which are arranged on the side of the radial sealing sheet 1 facing the cavity and arranged in a multi-stage structure; the sub-sealing sheet 101 contacts the rotor surface through the arc portion of its top to form multiple sealed cavities; the multi-stage sub-sealing sheet 101 is installed on the side of the radial sealing sheet 1 facing the cavity, with the bottom flush and the top arc facing outward, and is fixed in the trapezoidal groove 2 by a spring clip or an embedded fixing device to ensure that the sub-sealing sheet 101 moves freely but does not fall off; the multi-stage sub-sealing sheet 101 is fixed by the trapezoidal groove 2 to transfer the pressure and wear force from the rotor surface. The multi-stage sub-sealing sheet 101 contacts the rotor surface to form multiple sealed cavities to prevent gas or liquid leakage; the multi-stage sub-sealing sheet 101 can move slightly during operation to adapt to the rotation and temperature changes of the rotor;

[0021] Specifically, the sealing sheet side plates 102 are installed on both sides of each radial sealing sheet 1, and each radial sealing sheet 1 includes two sealing sheet side plates 102; the sealing sheet side plates 102 are installed on both sides of the radial sealing sheet 1 by mechanical fastening or fixing devices (such as screws, buckles), ensuring that they will not shift during operation;

[0022] Specifically, the air guide groove 103 is connected to the high-pressure gas source and is directly opened on the sealing side plates 102 on both sides of the radial sealing plate 1, and is a part of the radial sealing plate 1 as a whole; the air guide groove is evenly distributed on both sides of the sealing side plates 102; the air guide groove 103 guides the high-pressure gas to enter the bottom of the radial sealing plate 1, and the gas passes through the bottom and enters the position where the spring plate 3 and the reverse spring plate 4 are located, providing additional buoyancy, and the elastic force of the auxiliary spring group (spring plate 3 and reverse spring plate 4) makes the radial sealing plate 1 in close contact with the rotor surface, and evenly distributes the gas pressure of the sealing system; the high-pressure gas passes through the air guide groove 103, enters the groove from the outside of the sealing side plate 102, and enters the bottom area of ​​the radial sealing plate 1 along the groove.

[0023] Further, the spring group is composed of a spring sheet 3 and a reverse spring sheet 4;

[0024] Specifically, the spring sheet 3 is composed of a plurality of sub-spring sheets 301 and spring sheet support feet 302, and the sub-spring sheets 301 are arranged evenly; the spring sheet 3 is located in the mounting groove at the bottom of the radial sealing sheet 1, directly contacting the bottom surface of the radial sealing sheet 1, and a spring sheet 3 is usually installed at the bottom of each radial sealing sheet 1; the spring sheet 3 is fixed in the trapezoidal groove 2 at the bottom of the radial sealing sheet 1 through its support feet 302, one end of the spring sheet is fixed to the bottom of the trapezoidal groove by embedding or screws, and the other end is tightly connected to the radial sealing sheet 1 by compression installation; the spring sheet 3 provides a continuous upward elastic force and acts together with the reverse spring sheet 4 to ensure that the radial sealing sheet 1 always maintains close contact with the rotor surface during operation; the spring sheet 3 and the reverse spring sheet 4 jointly provide dynamic adjustment capability to compensate for slight changes in the radial sealing sheet 1 under different operating conditions, and adapt to gap changes caused by wear or thermal expansion through elastic deformation;

[0025] Specifically, the reverse spring sheet 4 is composed of a plurality of sub-reverse spring sheets 401 and reverse spring sheet support feet 402, and the sub-reverse spring sheets 401 are arranged evenly; the reverse spring sheet 4 is located in the bottom of the trapezoidal groove 2 of the radial sealing sheet 1, and a reverse spring sheet 4 is usually installed at the bottom of each radial sealing sheet 1; the reverse spring sheet 4 is fixed in the trapezoidal groove 2 at the bottom of the radial sealing sheet 1 through its support feet 402, one end of the reverse spring sheet 4 is fixed to the bottom of the trapezoidal groove 2 of the radial sealing sheet 1 by embedding or screws, and the other end is tightly connected to the radial sealing sheet 1 by compression installation; the reverse spring sheet 4 is located below or beside the spring sheet 3, providing reverse support force, which is transmitted to the bottom of the radial sealing sheet 1; the reverse spring sheet 4 works together with the spring sheet 3 to provide continuous support force to the radial sealing sheet 1, ensuring that the radial sealing sheet 1 always maintains close contact with the rotor surface during operation; the reverse spring sheet 4 and the spring sheet 3 jointly provide dynamic adjustment capability, compensate for slight changes of the radial sealing sheet 1 under different operating conditions, and adapt to gap changes caused by wear or thermal expansion through elastic deformation.

[0026] Further, the trapezoidal groove is composed of a sealing groove 201 and a mounting base plate 202;

[0027] Specifically, the sealing groove 201 is located at the place where every two arc-shaped side walls of the stator mechanism meet, and is integrated with the mounting base plate 202 through an overall design. The mounting base plate 202 fixes the sealing groove 201 as a whole on the stator, and utilizes the larger area of ​​the mounting base plate 202 to evenly distribute the pressure on the stator to form a sealing structure inside the stator; the sealing groove 201 is trapezoidal in shape as a whole, with a flat bottom and inclined surfaces on both sides, with an angle of 85 degrees; the side surfaces of the radial sealing sheet 1 are inserted into the inclined surfaces on both sides of the sealing groove 201, and are fixed on the upper surface of the sealing groove 201 using screws or buckles or other fixing devices. The radial sealing sheet 1 is fixed at the top and bottom to ensure that the radial sealing sheet 1 is firmly positioned in the sealing groove 201 and will not be displaced due to the rotation of the rotor or external vibration; the bottom of the sealing groove 201 is a plane, which is used to install and fix the spring sheet 3 and the reverse spring sheet 4. The spring sheet 3 and the reverse spring sheet 4 are fixed to the bottom of the sealing groove 201 using an embedded fixing device or a mechanical fastening device. The spring sheet 3 and the reverse spring sheet 4 can effectively transmit elastic force, provide initial preload force and reverse support force between the radial sealing sheet 1 and the rotor surface, and ensure close contact between the radial sealing sheet 1 and the rotor surface;

[0028] Specifically, the mounting base plate 202 is located at the bottom of the trapezoidal groove 2, and is used to fix the entire trapezoidal groove 2 on the stator; the mounting base plate 202 is integrated with the sealing groove 201, the base plate 202 directly supports the sealing groove 201, and the mounting base plate 202 and the sealing groove 201 are fixed together by mechanical fastening devices (such as screws, buckles, etc.); the mounting base plate 202 is a component of the trapezoidal groove 2, has a large area, is used to disperse pressure, and is used in conjunction with the sealing groove 201; the mounting base plate 202 is connected to the stator through its large contact area, and the mounting base plate 202 is firmly fixed on the stator using fixing devices such as screws and buckles; the mounting base plate 202 transmits the force from the sealing groove 201 to the stator, and disperses the pressure through the large contact area; the mounting base plate 202 disperses the pressure of the sealing groove 201 to the stator.

[0029] Furthermore, the spring sheet 3 is composed of a sub-spring sheet 301 and a spring sheet supporting foot 302;

[0030] Specifically, the sub-spring sheet 301 is located in the middle part of the spring sheet 3, which is the main supporting part of the arch structure; the two ends of the sub-spring sheet 301 are fixedly connected to the spring sheet support foot 302, and the sub-spring sheet 301 is firmly connected to the spring sheet support foot 302 through one-piece molding or welding and other processes; the sub-spring sheet 301 is in contact with the bottom 201 of the trapezoidal groove 2; the sub-spring sheet 301 pushes the radial sealing sheet 1 upward through elastic force, so that it is in close contact with the rotor surface; the pre-tightening force of the sub-spring sheet 301 ensures that the radial sealing sheet 1 is always in close contact with the rotor surface during operation to prevent gas leakage;

[0031] Specifically, the spring sheet support foot 302 is the end structure of the spring sheet 3, and the spring sheet support foot 302 is connected to the two ends of the sub-spring sheet 301, and is located one at each end on the left and right sides; the spring sheet support foot 302 contacts the two ends of the radial sealing sheet 1, and the various parts of the spring sheet 3 are fixed to the radial sealing sheet 1 and the bottom 201 of the trapezoidal groove 2 through mechanical fixing devices (such as screws and buckles); the contact area of ​​the spring sheet support foot 302 evenly transfers the elastic force of the sub-spring sheet 301 to the two ends of the radial sealing sheet 1, and the spring sheet support foot 302 fixes and supports the entire spring sheet 3 structure without displacement or deformation under high pressure environment.

[0032] Further, the reverse spring sheet 4 is composed of a sub-reverse spring sheet 401 and a reverse spring sheet supporting foot 402;

[0033] Specifically, the sub-reverse spring sheet 401 is located in the middle part of the reverse spring sheet 4 and has an arched structure; both ends of the sub-reverse spring sheet 401 are firmly connected to the reverse spring sheet support feet 402 by welding or an integral molding process; the sub-reverse spring sheet 401 transmits the preload force to the radial sealing sheet 1 through its arched elastic force, so that it maintains close contact with the rotor surface; the preload force provided by the sub-reverse spring sheet 401 ensures that the radial sealing sheet 1 always fits the rotor surface during operation to prevent air leakage;

[0034] Specifically, the reverse spring sheet support feet 402 are located at both ends of the reverse spring sheet 4; the reverse spring sheet support feet 402 are connected to the two ends of the sub-reverse spring sheet 401, and are respectively located on the left and right sides of the reverse spring sheet; the reverse spring sheet support feet 402 are in contact with the bottom of the radial sealing sheet 1, and the reverse spring sheet 4 is fixed in the bottom mounting groove or mounting hole of the radial sealing sheet 1 using mechanical fixing devices such as screws and snaps; the reverse spring sheet support feet 402 transfer the elastic force of the sub-reverse spring sheet 401 to the bottom of the radial sealing sheet 1 evenly through its contact area, and the reverse spring sheet support feet 402 support the reverse spring sheet 4 to avoid displacement or deformation under high pressure environment.

[0035] The trapezoidal groove has the following characteristics:

[0036] Preferably, the trapezoidal groove 2 is integrally formed with the arc-shaped side wall of the stator, and is directly machined or cast from the arc-shaped side wall of the stator;

[0037] Preferably, the depth of the trapezoidal groove 2 is half of the depth of the radial sealing sheet 1;

[0038] Preferably, the angle of the inclined surface of the trapezoidal groove 2 is 85±5 degrees.

[0039] The sealing sheet side plate 102 has the following features:

[0040] Specifically, the sealing sheet side plate 102 is provided with a groove, and the high-pressure gas passes through the groove, and the high-pressure gas is guided to the bottom of the radial sealing sheet 1 to provide additional buoyancy.

[0041] Specifically, the thickness of the sealing plate side plate 102 gradually decreases from bottom to top; the thinner portion at the top of the sealing plate side plate 102 can be elastically deformed under the action of high-pressure gas; the thicker portion at the bottom of the sealing plate side plate 102 is fixed in the trapezoidal groove 2 of the stator to provide fixed supporting force.

[0042] The sub-sealing sheet 101 has the following characteristics:

[0043] Preferably, the top of each sub-sealing sheet 101 has a curvature radius of 9 mm, and the number of sub-sealing sheets 101 is 5-12 groups.

[0044] The air guide groove 103 has the following characteristics:

[0045] Preferably, the air guide grooves 103 are evenly distributed on the sealing sheet side plates 102 , and each sealing sheet side plate 102 is provided with four air guide grooves 103 , for a total of eight air guide grooves 103 .

[0046] The spring sheet 3 has the following characteristics:

[0047] Preferably, the sub-spring pieces 301 are components of the spring piece 3, and there are four of them in total, which are arranged parallel to each other;

[0048] Arched structure with a radius of 60mm.

[0049] The reverse spring piece 4 has the following characteristics:

[0050] Preferably, the sub-reverse spring piece 401 is a component of the reverse spring piece 4, and there are three pieces in total, which are arranged parallel to each other.

[0051] Preferably, the interval between each sub-reverse spring piece 401 is 0.41 mm; each sub-reverse spring piece 401 presents an arched structure with a radius of curvature of 60 mm.

[0052] The overall working principle of the radial sealing structure of a rotary engine described in the present invention is as follows: the radial sealing sheet 1 is installed in the trapezoidal grooves 2 at the three tops of the stator. When the rotary engine is running, since the spring group (the spring sheet 3 and the reverse spring sheet 4 are cross-installed) has a certain preset stiffness, the radial sealing sheet 1 and the rotor are prevented from fitting together, preventing the gas from flowing to the adjacent combustion chamber, and realizing the separate sealing between the combustion chambers. The spring sheet 3 and the reverse spring sheet 4 are installed at the bottom of the radial sealing sheet 1, and a total of seven groups of sub-spring sheets 301 push the radial sealing sheet 1 to fit the stator to achieve sealing. When the rotary engine working room, the radial sealing sheet 1 is squeezed to the cylinder profile under the combined action of centrifugal force, the radial elastic force of the spring group and the gas pressure, so that the cylinder is always kept in close contact, thereby realizing the separation and sealing of the adjacent combustion chamber space. Since the contact surface with the rotor is a multi-level sub-sealing sheet 101, the reliability of the sealing sheet is improved. At the same time, since the gap can accommodate debris, the wear resistance of the sealing sheet and the service life of the rotary engine are improved.

[0053] The movement mode and installation mode of the radial sealing structure of a rotary engine described in the present invention include:

[0054] The spring group is composed of a spring sheet 3 and a reverse spring sheet 4. The spring sheet 3 and the reverse spring sheet are assembled and installed. The sub-spring sheet 301 penetrates into the interval of the reverse sub-spring sheet 301401. The spring sheet support foot 302 contacts the bottom of the radial sealing sheet 1, and the reverse spring sheet 402 contacts the bottom of the trapezoidal groove 2.

[0055] When the radial sealing sheet 1 moves vertically downward, each sub-spring sheet 301 is compressed, and the top is close to the radial sealing sheet 1, and the spring sheet support legs 302 expand to both sides, and each sub-reverse spring sheet 401 is compressed, and the top is close to the radial sealing sheet 1, and the reverse spring sheet support legs 402 expand to both sides;

[0056] When the radial sealing sheet 1 moves vertically upward, each sub-spring sheet 301 and each sub-reverse spring sheet 401 relaxes, and the top is away from the radial sealing sheet 1, and the spring sheet supporting feet 302 and the reverse spring sheet supporting feet 402 shrink inward.

[0057] When the radial sealing sheet 1 swings left and right, each sub-spring sheet 301 and the sub-reverse spring sheet 401 are compressed and released respectively, and the degree of compression is related to the distance between the radial sealing sheet 1 and the trapezoidal groove 2 .

[0058] The mechanism for realizing self-sealing of the radial sealing structure of a rotary engine described in the present invention includes:

[0059] High-pressure gas enters the bottom of the radial sealing piece 1 through the air guide groove 103 on the side plate 102 of the radial sealing piece 1. The high-pressure gas expands, and the radial sealing piece 1 moves upward. The compression amount of the reverse spring piece 4 and the spring piece 3 decreases, and the side gap of the radial sealing piece 1 becomes smaller. The gap between the rotor and the radial sealing piece 1 becomes smaller and fits more closely, thereby reducing the gap and reducing air leakage, thereby achieving a self-sealing effect. In addition, due to the introduction of high-pressure gas, the force on the spring is reduced, thereby increasing the life of the spring.

[0060] The mechanism of realizing multi-level sealing of the radial sealing structure of a rotary engine described in the present invention includes:

[0061] Under normal working conditions, high-pressure gas on both sides enters from one side of the radial sealing sheet 1. If the current first-stage sealing sheet is in tight contact, sealing can be completed. If there is a problem with the current sealing sheet, high-pressure gas will go to the next-stage sealing sheet through the gap. If the sealing effect of this stage of sealing sheet is good, sealing can be completed. If there is a problem with the sealing effect, it will go to the next-stage sealing. Multi-stage sealing sheets back up each other.

[0062] When the sub-sealing sheet 101 is damaged, high-pressure gas enters from the edge sub-sealing sheet 101 to complete partial sealing, and the remaining high-pressure gas continues to enter the sub-sealing sheet 101. The damaged sub-sealing sheet 101 has no sealing effect, so it goes to the sub-sealing sheet 1013. Since the sub-sealing sheet 1013 has a good sealing effect, the sealing can be completed at the sub-sealing sheet 101.

[0063] In the case where debris is generated by friction, some debris will appear during the operation of the rotary engine. After the debris appears, it will enter the area of ​​the two sub-sealing sheets 101 to prevent the debris from scratching the rotor surface.

[0064] Compared with the prior art, the beneficial effects of this technical solution are as follows:

[0065] The radial sealing structure of a rotary engine described in the present invention effectively solves the problems of insufficient sealing performance, wear and fracture, friction debris and poor heat dissipation through the innovative design of the radial sealing sheet 1 structure, and improves the overall sealing performance and service life. The cross-type double-layer sealing sheet and the trapezoidal sealing design provide better preload and dynamic sealing effect through structural improvement, solving the problem of insufficient preload of the traditional sealing sheet. The multi-layer sealing structure provides multiple sealing barriers through the comb tooth design. Even if part of it is worn, the remaining part can still work effectively, while reducing the impact of friction debris on the rotor surface. The arc-shaped design improves the fit between the radial sealing sheet 1 and the rotor, reduces air leakage, improves heat dissipation efficiency, and improves the working environment of the sealing sheet. Specifically, the radial sealing sheet 1 forms a comb tooth type multi-layer sealing structure, which divides the sub-sealing sheet 101 into multiple independent teeth (sub-sealing sheet 101 space). Even if one of the teeth (sub-sealing sheet 101 space) is worn or broken, the remaining teeth (sub-sealing sheet 101 space) can continue to play a role, providing multiple barriers to prevent gas leakage and improve the safety and durability of the sealing sheet. This effectively solves the problem of lack of redundancy in traditional one-piece sealing pieces and poor sealing durability once local wear or breakage occurs.

[0066] Specifically, the spring sheet 3 and the reverse spring sheet 4 form a cross-type double-layer sealing sheet structure, which forms an integrated spring group after processing. The spring group divides the sub-sealing sheet 101 into multiple independent teeth. Even if one of the teeth is worn or broken, the remaining teeth can continue to function, providing multiple barriers to prevent gas leakage and improve the safety and durability of the sealing sheet. After processing, an integrated spring group is formed to enhance the preload force. At the same time, hollowing treatment is used to reduce the weight, ensuring that the sealing sheet can still fit tightly to the rotor surface under high pressure conditions to prevent gas leakage. This effectively solves the problem that traditional single-layer sealing sheets are difficult to provide sufficient preload force and are prone to leakage and air leakage.

[0067] Specifically, the radial sealing sheet 1 forms a comb-tooth multi-layer sealing structure, and the gaps between the comb teeth can accommodate debris generated during the friction process, reducing the wear on the rotor surface; these gaps improve the heat dissipation efficiency, improve the working environment of the sealing sheet, and extend the service life. This effectively solves the problem that the traditional sealing sheet is prone to generate debris due to contact and friction with the rotor surface, resulting in increased wear and poor heat dissipation.

[0068] Specifically, the single-layer sub-sealing sheet 101 is relatively thin, which reduces the contact area, thereby effectively reducing the friction between the radial sealing sheet 1 and the rotor, reducing the friction power loss of the engine, and improving the engine efficiency. This effectively solves the problem that the traditional sealing sheet has a large contact area and directly increases the friction between the sealing sheet and the rotor, resulting in an increase in the friction power loss of the engine. Specifically, the trapezoidal sealing groove 2 adopts an active sealing design, and introduces high-pressure gas into the radial sealing sheet 1 to lift the radial sealing sheet 1 upward to reduce the gap with the cylinder body, so that the active fitting of the sealing sheet can be achieved, so that the overall sealing effect of the radial sealing sheet 1 does not only rely on the preload. This effectively solves the problem that during the combustion process of high-pressure gas, the mismatched thermal deformation will increase the sealing gap, the seal fit will be unbalanced, the sealing material will age and deteriorate, and the gas leakage will be aggravated.

[0069] Specifically, the multi-layer sealing structure is designed in an arc shape through the radial sealing sheet 1, so that it can better fit the rotor surface, improve the sealing performance, and ensure that gas leakage can still be effectively prevented under high pressure and high temperature conditions.

[0070] Specifically, the arc-shaped design of the spring sheet 3 and the reverse spring sheet 4 can better fit the rotor surface, improve the sealing performance, and ensure that gas leakage can still be effectively prevented under high pressure and high temperature conditions. This effectively solves the problem that the traditional sealing structure is difficult to perfectly fit the arc surface of the rotor, resulting in reduced sealing performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0071] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0072] Figure 1 It is an overall schematic diagram of a radial sealing structure of a rotary engine according to the present invention;

[0073] Figure 2 A cross-sectional view of a radial sealing sheet 1 of a radial sealing structure of a rotary engine according to the present invention;

[0074] Figure 3 A bottom view and a side view of a radial sealing sheet 1 of a radial sealing structure of a rotary engine according to the present invention;

[0075] Figure 4 It is an isometric view of a trapezoidal groove 2 of a radial sealing structure of a rotary engine according to the present invention;

[0076] Figure 5It is a cross-sectional view of a trapezoidal groove 2 of a radial sealing structure of a rotary engine according to the present invention;

[0077] Figure 6 A top view of a spring sheet 3 of a radial sealing structure of a rotary engine according to the present invention;

[0078] Figure 7 A side view of a spring sheet 3 of a radial sealing structure of a rotary engine according to the present invention;

[0079] Figure 8 A three-dimensional diagram of a spring sheet 3 of a radial sealing structure of a rotary engine according to the present invention;

[0080] Fig. 9 A top view of a reverse spring sheet 4 of a radial sealing structure of a rotary engine according to the present invention;

[0081] Fig.10 A side view of a reverse spring sheet 4 of a radial sealing structure of a rotary engine according to the present invention;

[0082] Fig.11 It is a front view of a reverse spring sheet 4 of a radial sealing structure of a rotary engine according to the present invention;

[0083] Fig.12 A side view of a spring sheet assembly of a radial sealing structure of a rotary engine according to the present invention;

[0084] Fig.13 A three-dimensional diagram of a spring sheet assembly of a radial sealing structure of a rotary engine according to the present invention;

[0085] Fig.14 It is a working principle diagram of a spring sheet group in a vertical downward working condition of a radial sealing structure of a rotary engine according to the present invention;

[0086] Fig.15 It is a working principle diagram of a spring sheet group in a vertical upward working condition of a radial sealing structure of a rotary engine according to the present invention;

[0087] Fig.16 It is a working principle diagram of a spring sheet group of a radial sealing structure of a rotary engine according to the present invention in a left-right swinging working condition;

[0088] Fig.17 Schematic diagram of the self-sealing property of the radial sealing structure of a rotary engine according to the present invention Figure 1 ;

[0089] Fig.18 Schematic diagram of the self-sealing property of the radial sealing structure of a rotary engine according to the present invention Figure 2 ;

[0090] Fig.19 This is a schematic diagram of the multi-stage sealing plates of the radial sealing structure of a rotary engine described in the present invention.

[0091]

Reference number

[0092] Radial sealing sheet 1; sub-sealing sheet 101; sealing sheet side plate 102; high-pressure gas guide groove 103;

[0093] Trapezoidal groove 2; sealing groove 201; mounting base plate 202;

[0094] Spring sheet 3; sub-spring sheet 301; spring sheet support foot 302;

[0095] Reverse spring piece 4; sub-reverse spring piece 401; reverse spring piece supporting foot 402. DETAILED DESCRIPTION

[0096] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0097] In view of the current situation that the radial sealing sheet 1 of the prior art cannot meet the performance requirements of the rotary engine, the present invention proposes a radial sealing structure of the rotary engine, which can further solve the comprehensive problems of the radial sealing sheet 1 and provide support for the development of advanced rotary engines.

[0098] like Figure 1 As shown, the present invention provides a radial sealing structure of a rotary engine, using a radial sealing sheet 1 on the rotary engine, and realizing a multi-level sealing system through the matching relationship between multiple components, the purpose of which is to ensure the air tightness and performance stability inside the rotary engine. Specifically, the radial sealing structure of the present invention is to set a specially designed trapezoidal groove 2 and a radial sealing sheet 1 at the matching part of the stator and the rotor, and use the continuous pressure provided by the spring group (spring sheet 3 and reverse spring sheet 4) to ensure the close contact between the radial sealing sheet 1 and the rotor, forming multiple sealing cavities, and effectively preventing leakage; the edge shape of the radial sealing sheet 1 is concave or convex, ensuring that it can always be closely matched with the rotor operation.

[0099] Specifically, the radial sealing structure of a rotary engine described in the present invention includes the following contents:

[0100] (1) Radial sealing sheet 1: The function of radial sealing sheet 1 is to contact with the rotor to prevent air leakage. The radial sealing sheet 1 is mainly composed of a sub-sealing sheet 101, a sealing sheet side plate 102, and a high-pressure gas guide groove 103. The sealing structure of the radial sealing sheet 1 consists of 5-12 groups of sub-sealing sheets 101 and sealing sheet side plates 102 on both sides. The bottom is flat, but the top has an arc with a radius of 9mm. The sealing sheet side plates 102 on both sides are the highest, and the middle sub-sealing sheet 101 is the lowest. During operation, several sub-sealing sheets 101 are tightly combined with the rotor to provide sealing for the air chambers on both sides. The edge shape of the radial sealing sheet 1 is concave or convex to ensure that it can always work closely with the rotor. The sealing plate side plates 102 are located on both sides of the radial sealing plate 1. The thickness of the sealing plate side plates 102 varies, with the bottom being thicker and the top being thinner. They have two functions. One is to provide a seal to isolate the air chambers on both sides from leaking, consistent with the function of the sub-sealing plate 101. The other is to achieve self-sealing. The details will be provided later. Eight high-pressure gas guide grooves 103 are provided on the radial sealing plate 1 side plates 102. Their main function is to introduce high-pressure gas into the bottom of the radial sealing plate 1 to support the radial sealing plate 1 so that the radial sealing plate 1 is in close contact with the rotor during operation. The eight high-pressure gas guide grooves 103 are evenly distributed on both sides of the sealing plate side plates 102. Four high-pressure gas guide grooves 103 are provided on each radial sealing plate 1 side plate 102.

[0101] (2) Trapezoidal groove 2: The trapezoidal groove 2 consists of a sealing groove 201 and a mounting base 202. The sealing groove 201 is used to mount the radial sealing sheet 1 and the reverse spring sheet 4 of the spring sheet 3. The bottom of the sealing groove 201 is a plane, and the two sides are inclined surfaces with an angle of 85 degrees, forming a trapezoid as a whole. The mounting base 202 is used to connect the trapezoidal groove 2 to the stator. Since the mounting base 202 has a large area, the pressure can be dispersed.

[0102] (3) Spring sheet 3: The main function of the spring sheet 3 is to provide pre-tightening force between the radial sealing sheet 1 and the rotor of the rotor engine, so that the radial sealing sheet 1 is tightly connected to the rotor. It is an arched structure with a radius of 60 mm. The spring sheet 3 is composed of two parts, namely, four sub-spring sheets 301 and a spring sheet support foot 302. The sub-spring sheets 301 are parallel to each other and have an interval of 0.41 mm. The two ends of the sub-spring sheets 301 are composed of the spring sheet support feet 302. When the spring sheet support feet 302 are installed, the spring sheet support feet 302 are in contact with the two ends of the radial sealing sheet 1, and the sub-spring sheets 301 are in contact with the bottom 201 of the trapezoidal groove 2.

[0103] (4) Reverse spring sheet 4: The main function of the reverse spring sheet 4 is to provide pre-tightening force for the radial sealing sheet 1. The reverse spring sheet 4 has the following characteristics: its main shape is an arch structure with a radius of 60 mm, consisting of three reverse spring sheets 401 and reverse spring sheet support feet 402 at the left and right ends, and the spacing between the reverse spring sheets 401 is 0.41 mm.

[0104] Furthermore, the overall structural relationship of the radial sealing structure of a rotary engine described in the present invention is as follows:

[0105] In general, the radial sealing structure of a rotary engine described in the present invention mainly includes a stator mechanism, a rotor mechanism, a radial sealing sheet 1 and a spring assembly; the stator mechanism includes three arc-shaped side walls, which form a three-petal cavity, and a trapezoidal groove 2 is provided at the junction of each two arc-shaped side walls for installing the radial sealing sheet 1; the rotor mechanism is a three-petal cavity surrounded by three sections of arc-shaped side walls, which is located in the three-petal cavity of the stator, and the outer surface of the rotor contacts the sub-sealing sheet 101 to form a contact surface between the rotor and the sub-sealing sheet 101, thereby forming a sealing mechanism; the radial sealing sheet 1 is installed in the trapezoidal groove 2 of the stator, and the two side surfaces of the radial sealing sheet 1 are in contact with the two side surfaces of the trapezoidal groove 2 Corresponding to the radial sealing sheet 1, a special mounting groove or mounting hole is provided at the bottom of the radial sealing sheet 1 to accommodate the spring sheet and the reverse spring sheet; the multi-stage sub-sealing sheet 101 is composed of a plurality of sub-sealing sheets 101 to form a group, which are arranged on the side of the radial sealing sheet 1 facing the rotor cavity; the top of each sub-sealing sheet 101 has a curvature arc with a radius of 9 mm, there are 5-12 groups of sub-sealing sheets 101, and all the sub-sealing sheets 101 are installed on the side of the radial sealing sheet 1 facing the cavity, arranged in a multi-stage structure, contacting the rotor surface to form a sealed cavity; the spring group is composed of a spring sheet 3 and a reverse spring sheet 4, which are installed at the bottom of the radial sealing sheet 1 and tightly connected to the contact surface of the main body of the radial sealing sheet 1.

[0106] In general, the connection relationship of the radial sealing structure of a rotary engine described in the present invention is as follows:

[0107] First, the connection between the radial sealing sheet 1 and the stator is that the radial sealing sheet 1 is inserted into the trapezoidal groove 2 of the stator through its side surface, corresponding to the side surface; and the two side surfaces of the radial sealing sheet 1 are precisely matched with the two side surfaces of the trapezoidal groove 2, and the radial sealing sheet 1 is fixed at the upper and lower parts of the trapezoidal groove 2 by fastening devices (such as screws or buckles) to prevent it from shifting during operation and achieve fixation;

[0108] Secondly, the connection between the radial sealing sheet 1 and the sub-sealing sheet 101 is that the sub-sealing sheet 101 is installed on the side of the radial sealing sheet 1 facing the cavity, and the sub-sealing sheets 101 are inserted into the installation grooves one by one, so that their bottoms are flush with the bottoms of the radial sealing sheet 1, and the arc part of the top faces outward; a small spring clip or an embedded fixing device (such as a screw) is used to fix the sub-sealing sheet 101 in the installation groove; in order to ensure that each sub-sealing sheet 101 can move freely but not fall off, it is necessary to manually fine-tune the sub-sealing sheet 101 so that the sub-sealing sheet 101 can be in close contact with the rotor surface and form a sealed cavity;

[0109] Thirdly, the connection between the radial sealing sheet 1 and the spring group is that the bottom of the radial sealing sheet 1 is connected to the spring group composed of the spring sheet 3 and the reverse spring sheet 4 through the mounting groove or mounting hole; first, the spring sheet 3 is placed in the mounting groove at the bottom of the radial sealing sheet 1, one end is fixed to the bottom of the groove, and the other end is upward, ensuring that the spring sheet 3 can provide appropriate upward elastic force so that the radial sealing sheet 1 can be in close contact with the rotor surface; then the reverse spring sheet 4 is placed below or beside the spring sheet to provide reverse support force, and one end of the reverse spring sheet 4 is fixed to the bottom of the mounting groove or fixed to the radial sealing sheet 1 through an additional fixing device (such as a screw); then screws or buckles and other fixing devices are used to secure the spring sheet 3 and the reverse spring sheet 4 in the mounting groove. During this period, it is necessary to manually press the radial sealing sheet 1 to check the elastic force of the spring sheet 3 and the reverse spring sheet 4, so that the spring sheet 3 and the reverse spring sheet 4 can provide stable support and elastic force during operation.

[0110] In general, the matching relationship of the radial sealing structure of a rotary engine described in the present invention is as follows:

[0111] First, the cooperation between the radial sealing sheet 1 and the trapezoidal groove 2 is achieved by the two side surfaces of the radial sealing sheet 1 being completely matched with the two side surfaces (inner wall shapes) of the trapezoidal groove 2 on the stator without any gap; during the installation process, the side surfaces of the radial sealing sheet 1 are closely connected with the side surfaces of the trapezoidal groove 2 by means of insertion or embedding; and after installation, they are further fixed by mechanical fastening devices (such as screws and buckles) to prevent the displacement of the radial sealing sheet 1 during operation. The cooperation between the radial sealing sheet 1 and the trapezoidal groove 2 can ensure that the radial sealing sheet 1 is firmly positioned in the trapezoidal groove 2 and will not be displaced due to the rotation of the rotor or external vibration;

[0112] Secondly, the cooperation between the sub-sealing sheet 101 and the rotor is that the sub-sealing sheet 101 contacts the rotor surface to form multiple sealing cavities; the top of the sub-sealing sheet 101 has a specific curvature (radius of 9 mm) to ensure close contact with the arc surface of the rotor; and multiple sub-sealing sheets 101 are installed on the radial sealing sheet 1 in a multi-stage arrangement, and each sub-sealing sheet 101 forms an independent sealing cavity with the rotor surface. During operation, the sub-sealing sheet 101 can move slightly to adapt to the rotation and temperature changes of the rotor and maintain continuous close contact. The cooperation between the sub-sealing sheet 101 and the rotor forms a contact seal, which can effectively prevent gas or liquid from leaking between the rotor and the stator;

[0113] Thirdly, the coordination between the spring group and the radial sealing sheet 1 is achieved by applying continuous elastic force to the radial sealing sheet 1 through the spring sheet 3 and the reverse spring sheet 4; the spring sheet 3 and the reverse spring sheet 4 are installed at the bottom of the radial sealing sheet 1, and are connected to the radial sealing sheet 1 through an installation groove or a fixing device. The spring sheet 3 provides an upward elastic force, and the reverse spring sheet 4 provides a reverse supporting force. The two work together to ensure that the radial sealing sheet 1 can maintain close contact with the rotor surface under different operating conditions, so that the radial sealing sheet 1 does not generate excessive friction when contacting the rotor, and can effectively seal.

[0114] In general, the radial sealing plate 1 of a rotary engine described in the present invention comprises a stator, a rotor, a radial sealing plate 1, a sub-sealing plate 101, a spring group (a spring plate 3 and a reverse spring plate 4) and a high-pressure gas guide groove 103; the stator can provide a fixing and positioning basis for the entire system; the radial sealing plate 1, as an intermediate component, transmits the positioning function of the stator to the sub-sealing plate 101, and at the same time receives the elastic force and buoyancy provided by the spring group and the high-pressure gas guide groove 103; the sub-sealing plate 101 forms a plurality of sealing cavities by contacting with the rotor surface to prevent leakage; the continuous elastic force provided by the spring group (the spring plate 3 and the reverse spring plate 4) and the buoyancy provided by the high-pressure gas guide groove 103 ensure that the radial sealing plate 1 and the sub-sealing plate 101 are always in close contact with the rotor surface to maintain a stable sealing effect.

[0115] The radial sealing structure of a rotary engine described in the present invention has the following transmission relationship between various components: the transmission relationship between the stator and the radial sealing sheet 1 is that the trapezoidal groove 2 of the stator firmly fixes the radial sealing sheet 1 in the stator and ensures that the position of the radial sealing sheet 1 is stable and will not be displaced due to the rotation of the rotor; and the stator provides positioning and fixing for the radial sealing sheet 1 through the trapezoidal groove 2 therein; the transmission relationship between the radial sealing sheet 1 and the sub-sealing sheet 101 is that the radial sealing sheet 1 fixes the sub-sealing sheet 101 through the mounting groove or guide groove on its surface, and during operation, the radial sealing sheet 1 transmits the pressure and wear force from the rotor surface to the sub-sealing sheet 101; the transmission relationship between the sub-sealing sheet 101 and the rotor is that the sub-sealing sheet 101 forms a plurality of sealing cavities through close contact with the rotor surface to prevent gas or liquid from leaking between the air chambers on both sides; due to the rotation of the rotor, the sub-sealing sheet 101 can continuously adjust its own position to maintain sealing; when the sub-sealing sheet 101 contacts the rotor, it transmits the pressure and wear force from the rotor The friction and pressure generated by rotation; the transmission relationship between the radial sealing piece 1 and the spring group is that the spring group composed of the spring piece 3 and the reverse spring piece 4 is installed at the bottom of the radial sealing piece 1, providing a continuous upward elastic force to the radial sealing piece 1; the spring group pushes the radial sealing piece 1 upward by elastic force, so that it keeps close contact with the rotor surface, and the elastic force provided by the spring piece 3 enables the radial sealing piece 1 to automatically adjust its position to compensate for the gap change caused by wear or thermal expansion; the transmission relationship between the spring group (spring piece 3 and reverse spring piece 4) and the high-pressure gas guide groove 103 is that the high-pressure gas enters the bottom of the radial sealing piece 1 through the guide groove, increases the buoyancy of the radial sealing piece 1, and assists the elastic force of the spring group (spring piece 3 and reverse spring piece 4); the high-pressure gas is introduced into the bottom of the radial sealing piece 1, and the radial sealing piece 1 is further pushed up by the gas pressure, so that the radial sealing piece 1 can be in close contact with the rotor surface; the high-pressure gas guide groove 103 can ensure that the gas pressure is evenly distributed to avoid excessive local pressure causing wear or damage to the sealing piece.

[0116] The installation process of the radial sealing structure of a rotary engine described in the present invention includes (1) installing the trapezoidal groove 2, (2) installing the spring sheet, (3) installing the radial sealing sheet 1, and (4) connecting the high-pressure gas guide groove 103. The specific steps are as follows:

[0117] (1) Install the trapezoidal groove 2. Fix the trapezoidal groove 2 at the junction of every two arc-shaped side walls of the stator to ensure that the mounting base plate 202 of the trapezoidal groove 2 is firmly connected to the stator. Since the mounting base plate 202 has a large area, it can effectively disperse the pressure and ensure the installation stability.

[0118] (2) Install the spring sheet 3 and the reverse spring sheet 4. First, place the spring sheet 3 at the bottom of the trapezoidal groove 2, ensuring that the sub-spring sheet 301 contacts the bottom of the sealing groove 201, and the spring sheet support foot 302 contacts the bottom of the radial sealing sheet 1. Then place the reverse spring sheet 4 in the trapezoidal groove 2, ensuring that the sub-reverse spring sheet 401 contacts the bottom of the sealing groove 201, and the reverse spring sheet support foot 402 contacts the bottom of the radial sealing sheet 1.

[0119] (3) Install the radial sealing sheet 1. First, align the sub-sealing sheet 101 of the radial sealing sheet 1 with the inclined surfaces on both sides of the trapezoidal groove 2, so that its bottom is connected with the spring sheet 3 and the reverse spring sheet 4. Then, install the sealing sheet side plates 102 on both sides of the radial sealing sheet 1 corresponding to the inclined surfaces on both sides of the trapezoidal groove 2, ensuring that the sealing sheet side plates 102 and the sub-sealing sheet 101 work together to isolate the air chambers on both sides from leaking.

[0120] (4) Connecting the high-pressure gas guide grooves 103. The eight high-pressure gas guide grooves 103 are connected to the high-pressure gas source respectively, and the high-pressure gas is introduced into the bottom of the radial sealing sheet 1. The radial sealing sheet 1 is lifted up by the high-pressure gas guide grooves 103 so that it is in close contact with the rotor.

[0121] The radial sealing structure of the rotary engine and its components of the present invention include the following mechanical design principles:

[0122] (1) Mechanical design principles followed by the sub-sealing sheet 101: According to the redundant design principle, the layered sealing principle and the pressure dispersion principle, the radial sealing sheet 1 is composed of a plurality of sub-sealing sheets 101, each of which is in contact with the rotor surface to form a multi-stage sealing structure. In the event of sealing failure or damage to the seal, a certain level of sub-sealing sheet 101 is damaged or fails, and the next level of sub-sealing sheet 101 continues to provide a sealing effect to ensure the overall sealing performance. Specifically, according to the redundant design principle, the multi-stage sealing sheet system adopts a redundant design, and each sub-sealing sheet 101 works independently to form a multi-layer sealing structure. Even if a certain level of sub-sealing sheet 101 fails, other sealing components can still maintain effective sealing. Specifically, according to the layered sealing principle, the multi-stage sub-sealing sheet 101 enables each layer of sealing sheet to prevent the leakage of high-pressure gas step by step, ensuring that the high-pressure gas cannot leak out through a single layer, thereby enhancing the overall sealing performance. Specifically, according to the pressure dispersion principle, the multi-stage sealing plate structure can disperse the force of high-pressure gas, avoid pressure concentration on a single sub-sealing plate 101, make each sub-sealing plate 101 bear less pressure, reduce wear and tear, and extend the service life of the sealing system.

[0123] (2) Mechanical design principles followed by the sealing plate side plate 102: According to the self-sealing principle, the dynamic adaptation principle and the fluid dynamics principle, the sealing plate side plate 102 not only provides an additional sealing effect, but also introduces high-pressure gas through the air guide groove 103, further enhancing the contact pressure between the radial sealing plate 1 and the rotor surface to ensure the sealing effect. Specifically, according to the self-sealing principle, the high-pressure gas guide groove 103 on the sealing plate side plate 102 introduces high-pressure gas to lift the radial sealing plate 1 so that it is in close contact with the rotor surface, thereby enhancing the sealing effect. Specifically, according to the dynamic adaptation principle, through the high-pressure gas introduced by the high-pressure gas guide groove 103 and the elastic design of the spring plate 3, the radial sealing plate 1 can dynamically adapt to the movement and pressure and temperature changes of the rotor, automatically adjust its sealing state, and continuously provide effective sealing. Specifically, according to the fluid dynamics principle, the high-pressure gas enters the bottom of the sealing plate through the high-pressure gas guide groove 103, and the support force is formed by the fluid dynamics principle, so that the radial sealing plate 1 is in close contact with the rotor surface, thereby improving the sealing effect.

[0124] (3) Mechanical design principles followed by the high-pressure gas guide groove 103: According to the principles of fluid dynamics and self-sealing, during the operation of the rotary engine, the high-pressure gas enters the bottom of the radial sealing plate 1 through the high-pressure gas guide groove 103, lifts the radial sealing plate 1, and makes it in close contact with the rotor. The supporting effect of the high-pressure gas enhances the self-sealing performance of the sealing plate and prevents gas leakage. Specifically, according to the principles of fluid dynamics, the high-pressure gas enters the bottom of the radial sealing plate 1 through the high-pressure gas guide groove 103, forms a lifting force, and utilizes the principles of fluid dynamics to enhance the close contact between the sealing plate 1 and the rotor surface to prevent gas leakage. Specifically, according to the principle of self-sealing, the high-pressure gas forms a lifting force through the high-pressure gas guide groove 103, automatically adjusts the shape of the radial sealing plate 1, makes it close to the rotor surface, and achieves a self-sealing effect.

[0125] (4) Mechanical design principles followed by the spring sheet 3: According to the elastic deformation principle, static sealing principle and contact pressure principle, the design of the spring sheet 3 provides an initial preload force between the radial sealing sheet 1 and the rotor surface through its elastic deformation, ensuring that the sealing sheet is in close contact with the rotor when the engine is stationary. Specifically, according to the elastic deformation principle, the spring sheet 3 is made of a highly elastic material, and within the elastic limit, it can restore its original shape after being deformed by force, and provides a continuous preload force through elastic deformation, so that the radial sealing sheet 1 is in close contact with the rotor surface when it is stationary. Specifically, according to the static sealing principle, under static conditions, the spring sheet 3 contacts the sealed surface through the preload force to achieve sealing; the initial preload force of the spring sheet 3 can ensure that the radial sealing sheet 1 is in close contact with the rotor surface when the engine is stationary, forming a preliminary seal. Specifically, according to the contact pressure principle, the spring sheet 3 provides an initial contact pressure through elastic deformation, ensuring the sealing effect between the radial sealing sheet 1 and the rotor surface.

[0126] (5) Mechanical design principles followed by the reverse spring sheet 4: According to the combined spring principle, dynamic sealing principle and load distribution principle, the reverse spring sheet 4 provides additional preload force, and works together with the spring sheet 3 to enhance the contact pressure between the radial sealing sheet 1 and the rotor surface. Specifically, according to the combined spring principle, the reverse spring sheet 4 works together with the spring sheet 3 to form a spring group, providing a stronger preload force, and enhancing the contact pressure between the radial sealing sheet 1 and the rotor surface. Specifically, according to the dynamic sealing principle, the reverse spring sheet 4 provides additional preload force to maintain the close contact between the radial sealing sheet 1 and the rotor surface during the movement of the rotor, thereby ensuring the dynamic sealing effect. Specifically, according to the load distribution principle, the reverse spring sheet 4 and the spring sheet 3 share the load of the preload force, thereby avoiding a single spring sheet from bearing excessive pressure burden, and improving the reliability and durability of the sealing system.

[0127] (6) Mechanical design principles followed by the joint action of the spring sheet 3 and the reverse spring sheet 4: According to the principles of elastic deformation, thermal expansion compensation and centrifugal force adaptation, the spring sheet 3 and the reverse spring sheet 4 allow the sealing sheet to dynamically adjust in the environment of high temperature, high pressure and high-speed movement of the rotor, adapt to the movement and temperature changes of the rotor, and ensure the continuous stability of the sealing effect. Specifically, according to the principle of elastic deformation, the spring sheet 3 and the reverse spring sheet 4 provide continuous preload through elastic deformation. Within the elastic limit, they can return to their original state after being deformed by force, so that the radial sealing sheet 1 can dynamically adjust its position to adapt to the movement and temperature changes of the rotor. Specifically, according to the principle of thermal expansion compensation, the elastic capacity of the spring sheet 2 and the reverse spring sheet 3, due to the thermal expansion caused by high temperature, the sealing system needs to have the ability to compensate for the thermal expansion, ensuring that the radial sealing sheet 1 is always in close contact with the rotor surface. Specifically, according to the principle of centrifugal force adaptation, in the environment of high-speed rotation, the rotor generates centrifugal force, and the sealing system needs to have the ability to resist and adapt to the centrifugal force. The elastic preload of the spring sheet 3 and the reverse spring sheet 4 can compensate for the displacement of the sealing sheet caused by the centrifugal force and maintain a stable sealing effect.

[0128] Furthermore, the radial sealing structure of a rotary engine described in the present invention is described in conjunction with the accompanying drawings and embodiments.

[0129] like Figure 2As shown, the sub-sealing sheet 101 marked in the figure represents a plurality of sub-sealing sheets 101, and the top of each sub-sealing sheet 101 has a specific curvature R9, and contacts with the rotor surface to form a sealed cavity to prevent gas or liquid leakage; the curvature radius R9 marked in the figure indicates that the curvature radius of the top of the sub-sealing sheet 101 is 9 mm, ensuring that the sub-sealing sheet 101 can fit closely with the arc-shaped surface of the rotor to provide effective sealing; the sealing sheet side plate 102 marked in the figure represents the side plate of the radial sealing sheet 1, which is located on both sides of the radial sealing sheet 1, and its thickness gradually becomes thinner from the bottom to the top, which can provide necessary structural support and self-sealing properties; the high-pressure gas guide groove 103 (not marked in the figure, but present on the side plate) further ensures the close contact between the sealing sheet and the rotor by introducing high-pressure gas; the sealing sheet side plate 102 provides structural strength and introduces high-pressure gas through the guide groove to ensure the close contact between the radial sealing sheet 1 and the rotor surface.

[0130] like Figure 3 As shown, according to the top view and side view of the radial sealing sheet 1, the figure shows in detail the key structure of the radial sealing sheet 1, including the thickness change of the sealing sheet side plate 102 and the distribution of the high-pressure gas guide groove 103. Specifically, in the top view (upper figure), the planar structure of the sealing sheet side plate 102 is shown, with the distribution of multiple high-pressure gas guide grooves 103. There are 4 high-pressure gas guide grooves 103 on each side plate in the figure, and they are evenly distributed; the marked guide grooves 103 are used to introduce high-pressure gas to the bottom of the radial sealing sheet 1 to provide support. Specifically, in the side view (lower figure), the thickness change of the sealing sheet side plate 102 is shown, which gradually becomes thinner from the bottom to the top; the bottom is thicker and the top is thinner; the thicker part at the bottom helps the sealing sheet side plate 102 to be firmly fixed in the trapezoidal groove 2 of the stator; the thinner part at the top allows slight deformation under the action of high-pressure gas, which can better fit the subtle changes on the rotor surface and form a tighter seal. Specifically, the air guide grooves 103 are evenly distributed on both sides of the sealing plate side plate 102, 4 on each side, a total of 8; during the operation of the engine, high-pressure gas is introduced into the bottom of the radial sealing plate 1 through these high-pressure gas guide grooves 103; after the gas enters, an air cushion effect is formed, pushing the sealing plate side plate 102 and the sub-sealing plate 101 upward; then the thinner part of the top of the sealing plate side plate 102 is easily deformed under the action of high pressure, and can flexibly adapt to the shape changes of the rotor surface. Specifically, the sub-sealing plate 101 is arranged in the middle part of the radial sealing plate 1, and contacts with the rotor surface to form a sealing cavity; the deformation of the top of the sealing plate side plate 102 enhances the contact tightness between the sub-sealing plate 101 and the rotor surface.

[0131] like Figure 2 and Figure 3As shown, the sealing plate side plates 102 are installed on both sides of the radial sealing plate 1, and the radial sealing plate 1 is fixed as a whole in the trapezoidal groove 2 of the stator. By closely fitting with the trapezoidal groove 2, the sealing plate side plates 102 ensure that the radial sealing plate 1 will not move or get loose when the rotor rotates, and maintain stable positioning; the edge shape of the radial sealing plate 1 is concave or convex, ensuring that it can always closely fit with the rotor operation. The thickness of the sealing plate side plates 102 gradually becomes thinner from the bottom to the top, which can ensure that the sealing plate side plates 102 provide sufficient rigidity and strength at the bottom to support the structure of the entire radial sealing plate 1; and then the bottom of the sealing plate side plates 102 is thicker, which can withstand the mechanical stress and pressure difference generated during operation, and ensure the overall stability of the radial sealing plate 1.

[0132] like Figure 2 and Figure 3 As shown, the sealing sheet side plate 102 gradually becomes thinner from the bottom to the top, with a thicker bottom and a thinner top. The sealing sheet side plate 102 provides a strong supporting force at the bottom of the radial sealing sheet 1, and at the same time, the thinner part at the top can undergo elastic deformation when subjected to external force, and the deformation is recoverable, and can flexibly deform to adapt to the movement of the rotor. Specifically, the thicker bottom of the sealing sheet side plate 102 provides the necessary rigidity and strength to ensure that the radial sealing sheet 1 side plate can withstand the mechanical stress and pressure difference generated during operation; the thicker bottom part of the sealing sheet side plate 102 is fixed in the trapezoidal groove 2 of the stator, providing stable support to prevent the sealing sheet side plate 102 from shifting during operation. Specifically, the top of the sealing sheet side plate 102 is thinner, and can undergo a slight elastic deformation when subjected to external force, and the deformation is recoverable. The deformation ability enables the top part to adjust its shape with the slight changes in the rotor surface, maintaining continuous close contact to adapt to the movement of the rotor. Therefore, in a rotary engine, the rotor rotates at high speed, and the surface shape and position of the sealing plate side plate 102 will constantly change, and the radial sealing plate 1 needs to maintain close contact with the rotor surface to effectively achieve sealing.

[0133] Example 1: Slight vibration, wear and temperature expansion

[0134] In a specific embodiment, when the rotary engine starts to run, the rotor rotates at high speed and high temperature, and the surface of the radial sealing plate 1 side plate will have slight vibration, wear and temperature expansion, which will affect the tightness of the seal; the thinner part of the top of the sealing plate side plate 102 can adapt to subtle changes such as vibration, wear and temperature expansion due to its elastic characteristics, and keep the contact surface with the rotor unchanged through slight deformation. Further, under the action of pressure, high-pressure gas enters the bottom of the radial sealing plate 1 through the high-pressure gas guide groove 103, exerts upward pressure, and pushes the sealing plate side plate 102 and the sub-sealing plate 101 upward; the thinner part of the top of the sealing plate side plate 102 will undergo slight deformation under the action of high-pressure gas, and fits tightly to the rotor surface to form an effective seal. Further, when there is a slight irregularity or vibration on the surface of the rotor, the top part of the sealing plate side plate 102 can respond quickly and adapt to the surface changes of the rotor through elastic deformation. The dynamic adaptability of the sealing plate side plate 102 ensures that the sealing plate side plate 102 can always maintain the best sealing effect under high-speed operation conditions.

[0135] In a specific embodiment, the rotary engine is cold-started, the temperature inside the sub-engine is low, and the temperature of the radial sealing plate 1 and the rotor is also low. Due to the low temperature, the sealing plate side plate 102 and the rotor material will shrink thermally, resulting in an increase in the sealing gap. At low temperatures, the viscosity of the lubricating oil increases, the fluidity deteriorates, and the lubrication effect decreases. At this time, the elastic preload provided by the spring plate 3 and the reverse spring plate 4 can still tightly fit the rotor surface under low temperature conditions, reducing the leakage caused by material shrinkage. At the same time, during the cold start process, high-pressure gas enters the bottom of the radial sealing plate 1 through the high-pressure gas guide groove 103, forming an upward pressure, further pushing the sealing plate side plate 102 to fit the rotor surface, and enhancing the sealing effect. Specifically, from the perspective of the sealing material properties, the elastic modulus of the sealing plate of the material at low temperatures will increase, causing the material to become harder and more difficult to deform. As the material hardens, the elastic response of the sealing plate side plate 102 in response to vibration and irregular surface changes will weaken. The elastic changes of the sealing sheet side plate 102 under low temperature conditions ensure that it can still effectively adapt to vibrations and irregular surface changes during cold start through a preset elastic deformation range.

[0136] In a specific embodiment, the rotary engine is operated at a low speed under the idle condition, the speed of the rotor is low, and the relative speed between the sealing plate side plate 102 and the rotor surface is small. Due to the low speed, the wear between the radial sealing plate 1 and the rotor is relatively reduced; and at low speed, the effect of centrifugal force is weakened, and the centrifugal force on the sealing plate side plate 102 is reduced. At this time, the preload force of the spring plate 3 and the reverse spring plate 4 is still effective under low speed conditions, ensuring the close contact between the sealing plate side plate 102 and the rotor surface. Although the centrifugal force is reduced, the thinner part of the top of the sealing plate side plate 102 can still maintain contact with the rotor surface through slight elastic deformation to prevent air leakage. Further, under idle conditions, the temperature of the rotary engine is relatively stable, and high-temperature expansion will not occur. The stable temperature prevents the material of the radial sealing plate 1 from obvious thermal expansion or contraction. Under the condition of stable temperature, the deformation of the sealing plate side plate 102 remains constant, and a constant sealing effect is ensured through the continuous action of high-pressure gas and the cooperation of preload force. When idling, the vibration amplitude of the rotary engine is small, and the elastic deformation of the sealing plate side plate 102 can easily adapt to these slight vibrations and maintain the sealing performance.

[0137] Example 2: Slight bulges or depressions appear on the rotor surface

[0138] In a specific embodiment, when the rotary engine is running, a slight bulge or depression appears at any position on the rotor surface due to high-speed rotation and high-temperature expansion, with a height or depth of about 0.1-0.3 mm. If there is a slight bulge or depression, the use of a sealing sheet without deformation ability will cause sealing failure because it cannot fit tightly against the rotor surface, resulting in gas leakage.

[0139] Specifically, when the sealing sheet is installed, the pre-tightening force of the spring sheet 3 and the reverse spring sheet 4 is used to make the radial sealing sheet 1 in close contact with the rotor surface to form a preliminary seal. Then, during the operation of the engine, the response of the sealing sheet side plate 102 causes the thinner portion of the top of the sealing sheet side plate 102 to elastically deform under the action of high-pressure gas and contact pressure; when the top of the sealing sheet side plate 102 encounters a bulge, the thinner portion of the top elastically deforms outward; when encountering a depression, the thinner portion of the top elastically deforms inward. Then, the high-pressure gas is introduced into the bottom of the radial sealing sheet 1 through the air guide groove 103, and the radial sealing sheet 1 is lifted up so that it is in close contact with the rotor surface. The high-pressure gas is introduced into the bottom of the radial sealing sheet 1 through the air guide groove 103, and the radial sealing sheet 1 is lifted up so that it is in close contact with the rotor surface. At this time, the elastic deformation of the sealing sheet side plate 102 allows the radial sealing sheet 1 to automatically adjust its shape and fit closely to the bulge or depression on the rotor surface. The radial sealing sheet 1 is in uniform contact on the entire rotor surface, and can effectively prevent gas leakage regardless of any slight deformation on the rotor surface.

[0140] Test verification: The sealing plate side plate 102 has the ability to flexibly deform. The thinner part on the top of the sealing plate side plate 102 will undergo elastic deformation under pressure and automatically adjust its shape to adapt to the protrusion or depression. The elastic deformation of the sealing plate side plate 102 enables the radial sealing plate 1 to still maintain close contact with the rotor surface, preventing gas leakage and maintaining effective sealing.

[0141] Example 3 Effective sealing of the air chambers on both sides of the rotary engine

[0142] In a specific embodiment, the sub-sealing sheet 101 is arranged in the middle of the radial sealing sheet 1, and contacts the rotor surface to form a sealing cavity, and the thickness variation of the sealing sheet side plate 102 can cooperate with the sub-sealing sheet 101. When the top thinner part of the sealing sheet side plate 102 is subjected to pressure, it can flexibly conform to the surface shape of the rotor, ensuring close contact between the sub-sealing sheet 101 and the rotor, thereby effectively sealing the air chambers on both sides.

[0143] Specifically, the thicker bottom portion of the sealing plate side plate 102 is installed in the trapezoidal groove 2 of the stator to provide support force, ensure that the radial sealing plate 1 is firmly fixed, can withstand the mechanical stress and pressure difference generated during operation, and prevent the radial sealing plate 1 from deforming or loosening under high load.

[0144] Specifically, during the operation of the rotor, the rotor surface will undergo slight deformation or vibration due to high-speed rotation and temperature changes. The thinner portion of the top of the sealing plate side plate 102 conforms to the slight changes in the rotor surface through elastic deformation under the push of high-pressure gas, ensuring that the sealing plate side plate 102 can automatically adjust its shape and maintain close contact with the rotor when the rotor rotates at high speed and the temperature changes. The thinner portion of the top of the sealing plate side plate 102 can adapt to the expansion or vibration of the rotor. This adaptive ability prevents sealing failure caused by changes in the rotor surface and maintains effective sealing of the air chambers on both sides. Furthermore, the sub-sealing plate 101 enhances contact with the rotor surface through the deformation of the sealing plate side plate 102, ensuring the formation of the sealing cavity and gas isolation.

[0145] Example 4 The elastic deformation capability of the thinner portion of the top of the sealing plate side plate 102 effectively prevents gap leakage

[0146] In a specific embodiment, during the start-up phase of the rotary engine, high-pressure gas enters the bottom of the radial sealing plate 1 through the gas guide grooves 103. These gas guide grooves 103 are evenly distributed on the sealing plate side plate 102 to ensure that the gas pressure is evenly distributed at the bottom of the sealing plate. At this time, the high-pressure gas forms an air cushion effect at the bottom of the sealing plate, pushing the sealing plate side plate 102 and the sub-sealing plate 101 upward; the upward thrust keeps the sealing plate in close contact with the rotor surface.

[0147] Furthermore, as the rotary engine runs for a long time, temperature changes will cause thermal expansion or contraction of the rotor and the sealing sheet material. At this time, the thinner portion of the top of the sealing sheet side plate 102 will deform slightly under the action of the high-pressure gas, and can flexibly adapt to the subtle changes and irregularities of the rotor surface; thus, the radial sealing sheet 1 better fits the rotor surface, increases the contact area, and prevents gas from leaking from the gap between the sealing sheet and the rotor. The deformation ability of the thinner portion of the top of the sealing sheet side plate 102 can automatically adapt to these temperature changes, adapt to the expansion of the rotor, maintain close contact between the sealing sheet and the rotor surface, and thus maintain the sealing effect.

[0148] Furthermore, after the rotary engine has been running for a period of time, the rotor surface or the sub-sealing plate 101 will be worn or irregular, resulting in wear of the rotor surface or the sub-sealing plate 101. The elastic deformation ability of the thinner part at the top of the sealing plate side plate 102 can compensate for such wear and maintain the integrity of the sealing cavity.

[0149] Furthermore, through continuous small deformation and adjustment, the sealing plate side plate 102 and the sub-sealing plate 101 can maintain close contact with the rotor surface under different working conditions; the adaptive ability of the sealing plate side plate 102 ensures the long-term stable and efficient operation of the sealing system, prevents gas leakage, and improves the reliability and life of the engine.

[0150] like Figure 4 As shown, according to the isometric view of the trapezoidal groove 2, the figure shows the trapezoidal groove 2, including a sealing groove 201 with an angle of 85±5 degrees and a large-area mounting base plate 202; the sealing groove 201 is used to install the radial sealing sheet 1, the spring sheet 3 and the reverse spring sheet 4; the mounting base plate 202 is used to connect the trapezoidal groove 2 with the stator. The trapezoidal groove 2 provides a stable mounting base and an effective pressure dispersion function.

[0151] like Figure 5 As shown, the sealing groove 201 is used to install the radial sealing sheet 1, the spring sheet 3 and the reverse spring sheet 4. The bottom of the sealing groove 201 is designed to be flat, and the two sides are inclined, forming an angle of 85±1 degrees, forming a trapezoidal cross section, providing lateral support, and preventing the radial sealing sheet 1 from shifting during operation. The mounting base plate 202 is used to connect the trapezoidal groove 2 to the stator; the mounting base plate 202 has a large area, which can effectively disperse the pressure acting on the sealing groove 201, and avoid deformation or damage caused by excessive local pressure.

[0152] Specifically, the bottom of the sealing groove 201 is a flat design, providing a stable installation base; the inclined surfaces on both sides of the sealing groove 201 have an angle of 85±5 degrees, forming a trapezoidal cross section. The position where the sealing groove 201 is stably installed is the radial sealing sheet 1, and the spring sheet 3 and the reverse spring sheet 4 correspond; the inclined surface of the sealing groove 201 can fasten the radial sealing sheet 1, provide lateral support, and prevent the radial sealing sheet 1 from shifting during operation.

[0153] Specifically, the mounting base plate 202 firmly connects the trapezoidal groove 2 to the stator, and the mounting base plate 202 has a large area, providing a stable base. Since the mounting base plate 202 has a large contact area, it can effectively disperse the pressure generated during operation and avoid deformation or damage caused by excessive local pressure.

[0154] Furthermore, the radial sealing sheet 1 is inserted into the sealing groove 201, and the inclined surface of the sealing groove 201 can be fixed and provide lateral support. Since the angle of the inclined surface of the sealing groove 201 is 85±1 degrees, it is ensured that the sealing sheet will not be squeezed out of the sealing groove under high pressure; the spring sheet 3 and the reverse spring sheet 4 are installed at the bottom of the plane in the sealing groove 201, and the spring sheet 3 can provide an upward elastic force to push the radial sealing sheet 1 to be in close contact with the rotor surface.

[0155] Furthermore, the high-pressure gas enters the bottom of the sealing groove through the air guide groove on the sealing plate side plate 102, generating an upward thrust; the gas thrust combined with the elastic force of the spring plate ensures that the radial sealing plate 1 maintains close contact with the rotor surface; since the area of ​​the mounting base plate 202 is large, the pressure generated during the operation of the engine can be evenly dispersed; the pressure dispersion mechanism helps to prevent deformation of the sealing groove and the mounting base plate, thereby extending the service life of the radial sealing plate 1.

[0156] Example 5 The bevel angle setting of the sealing groove 201 can reduce the stress concentration phenomenon

[0157] In a specific embodiment, the radial sealing sheet 1 is inserted into the sealing groove 201, and the bevel angle is set to 88 degrees (close to 90 degrees). At this time, the greater normal force improves the fastening effect of the radial sealing sheet 1, and reduces the lateral displacement of the radial sealing sheet 1 under high pressure and high vibration environment, and even provides stronger support under high load of the rotary engine to prevent structural deformation. On the contrary, when the bevel angle is 88 degrees (close to 90 degrees), stress concentration occurs, and fatigue and damage of the material of the local sealing groove 201 of the radial sealing sheet 1 are significant.

[0158] In another specific embodiment, the radial sealing sheet 1 is inserted into the sealing groove 201, and the bevel angle is set to 78 degrees (between 75 degrees and 80 degrees). At this time, the larger normal force improves the fastening effect of the radial sealing sheet 1, and reduces the lateral displacement of the radial sealing sheet 1 under high pressure and high vibration environment, and even provides stronger support under high load of the rotary engine to prevent structural deformation. However, when the bevel angle is 88 degrees (close to 90 degrees), stress concentration occurs, and fatigue and damage of local materials of the radial sealing sheet 1 are significant. In addition, during installation, a smaller bevel angle has a good guiding effect, and it is easy to guide the sealing sheet into the sealing groove, which is convenient for installation and disassembly; and a smaller bevel angle can disperse stress more evenly and reduce local stress concentration. Specifically, the normal force when the bevel angle is 78 degrees is small. When the rotary engine is running, the radial sealing sheet 1 is obviously loose or displaced under high pressure, and under high load conditions, the supporting force is insufficient, resulting in instability of the local structure of the radial sealing sheet 1.

[0159] In another specific embodiment, the radial sealing sheet 1 is inserted into the sealing groove 201, and the angle of the bevel is set to 85±5 degrees, providing support force and ensuring that the radial sealing sheet 1 will not be squeezed out of the sealing groove under high pressure. In sequence, the spring sheet 3 and the reverse spring sheet 4 are installed at the bottom of the plane in the sealing groove 201 to ensure that the spring sheet can provide an upward elastic force to push the radial sealing sheet 1 to be in close contact with the rotor surface. At this time, the rotary engine starts, and the high-pressure gas enters the bottom of the sealing groove through the air guide groove on the sealing sheet side plate 102, generating an upward thrust; the gas thrust combined with the elastic force of the spring sheet ensures that the radial sealing sheet 1 is in close contact with the rotor surface. The high-pressure gas enters the bottom of the sealing groove through the air guide groove on the sealing sheet side plate 102, generating an upward thrust; the gas thrust combined with the elastic force of the spring sheet ensures that the radial sealing sheet 1 is in close contact with the rotor surface. Due to the large area of ​​the mounting base plate 202, the pressure generated during the operation of the rotary engine can be evenly dispersed; and thus the pressure dispersion mechanism helps to prevent the deformation of the sealing groove and the mounting base plate.

[0160] Conclusion: The sealing groove 201 is finally set to an angle of 85±5 degrees, which not only takes into account the functional requirements of fastening, guiding, and supporting, but also takes into account the influence of the strength, hardness, and elastic modulus of the material. Specifically, the sealing groove 201 is set at an angle of 85±5 degrees, which is close to vertical (90 degrees). The close-to-vertical inclined surface can provide a greater normal force after installation, ensuring the stability of the radial sealing plate 1 under high pressure and high-speed rotation environment. Specifically, the sealing groove 201 is set at an angle of 85±5 degrees, which helps to guide the sealing plate into the sealing groove and ensure accurate positioning. Specifically, the sealing groove 201 is set at an angle of 85±5 degrees, which helps to evenly disperse the radial and axial forces into the overall structure of the sealing groove, reduce stress concentration, and improve the durability and reliability of the sealing system.

[0161] like Figure 6 , Figure 7 and Figure 8 As shown, Figure 6 is a top view of the spring sheet 3, Figure 7 is a side view of the spring sheet 3, Figure 8 is a three-dimensional view. Figure 6 , Figure 7 and Figure 8 Both show the spring sheet 3 in the spring sheet assembly, which has a curvature radius of 60 mm and consists of four sub-spring sheets 301 and a spring sheet support foot 302; the spring sheet 3 provides radial sealing by applying a pre-tightening force to the radial sealing sheet 1 to ensure that the sealing sheet is tightly connected to the engine rotor.

[0162] Specifically, the four sub-spring sheets 301 on the spring sheet 3 are arranged parallel to each other with a spacing of 0.41 mm; both ends of each sub-spring sheet 301 are connected to the spring sheet support feet 302, with one support foot on each side; during installation, the spring sheet support feet 302 contact the two ends of the radial sealing sheet 1, and the sub-spring sheet 301 contacts the bottom 201 of the trapezoidal groove 2. The entire spring sheet 3 structure provides radial sealing by applying a pre-tightening force to the radial sealing sheet 1, ensuring that the radial sealing sheet 1 is tightly connected to the engine rotor.

[0163] Embodiment 6 The elasticity of the spring sheet 3 effectively compensates for changes in the sealing gap caused by temperature changes or rotor wear

[0164] In a specific embodiment, the spring sheet support foot 302 contacts the two ends of the radial sealing sheet 1; the two ends of the sub-spring sheet 301 are connected to the spring sheet support foot 302, and the bottom of the sub-spring sheet 301 contacts the trapezoidal groove 2. The spring sheet 3 transmits the preload force to the radial sealing sheet 1 through its arc structure and the elasticity of the sub-spring sheet 301; the elastic force of the sub-spring sheet 301 is transmitted to the two ends of the radial sealing sheet 1 through the spring sheet 3 support foot 302. Specifically, when the spring sheet 3 is installed in the trapezoidal groove 2, its arc structure will produce elastic deformation, generating an outward elastic force (preload force). The preload force of the spring sheet 3 is transmitted to the radial sealing sheet 1 through the sub-spring sheet 301, so that the radial sealing sheet 1 fits tightly on the surface of the rotor. As mentioned above, the two sides of the trapezoidal groove 2 are inclined surfaces, and form an angle of 85±5 degrees. The contact area between the side surface generated by the sealing groove 201 and the radial sealing sheet 1 is increased. Compared with the groove with a straight side surface, the inclined surface of the trapezoidal groove 2 provides a larger contact area. The larger contact area generated by the bevel angle of 85±5 degrees helps to disperse the pressure, so that the radial sealing sheet 1 is subjected to more uniform force, thereby improving the sealing effect.

[0165] During the operation of the engine, when the rotor rotates, the radial sealing sheet 1 is subjected to the centrifugal force, and the inclined surface of the trapezoidal groove 2 can effectively guide and support the sealing sheet to prevent it from deviating from the sealing position due to the centrifugal force; at the same time, the inclined surface increases the pressing force of the sealing sheet, enhances the fit between the radial sealing sheet 1 and the rotor surface, and further improves the sealing performance. Furthermore, temperature changes will cause thermal expansion of the material, and the rotor and radial sealing sheet 1 will experience varying degrees of wear. The elasticity of the spring sheet 3 just compensates for the change in the sealing gap caused by thermal expansion or wear, ensuring that the radial sealing sheet 1 always maintains close contact with the rotor surface.

[0166] Furthermore, the inclined surface of the trapezoidal groove 2 effectively disperses the pressure acting on the sealing sheet 1, avoids local excessive stress, and reduces the wear of the sealing sheet. Then, the preload force of the spring sheet 3 and the inclined surface of the trapezoidal groove 2 work together to ensure that the radial sealing sheet 1 can maintain the pressure balance of the engine under various operating conditions, prevent leakage, and achieve effective sealing.

[0167] like Fig. 9 As shown, according to the top view of the reverse spring sheet 4, the main function of the reverse spring sheet 4 is to provide preload for the radial sealing sheet 1. The reverse spring sheet 4 has an arched structure with a radius of 60 mm, which can generate uniform preload. The sub-reverse spring sheet 401 is composed of 3 sub-reverse spring sheets 401, and the multiple sub-reverse spring sheets are arranged in parallel with each other, and the spacing between each sub-reverse spring sheet 401 is 0.41 mm, so as to provide uniform preload at multiple positions. A reverse spring sheet support foot 402 is provided at each of the left and right ends of the reverse spring sheet 4, which is used to fix the position of the reverse spring sheet 4. The support foot 402 contacts the two ends of the radial sealing sheet 1 to ensure that the radial sealing sheet 1 is stable in the rotary engine.

[0168] like Fig.10 As shown, according to the side view of the reverse spring sheet 4, it is clearly shown that the reverse spring sheet 4 is composed of a plurality of sub-reverse spring sheets 401 arranged in parallel, and the sub-reverse spring sheets are evenly arranged, forming the main supporting structure of the entire reverse spring sheet 4. The plurality of sub-reverse spring sheets 401 are evenly spaced, and the bottom of each sub-reverse spring sheet 401 is in contact with the trapezoidal groove 201, generating the necessary preload force. Furthermore, the marked portion in the figure is the reverse spring sheet support foot 402, which is located at the bottom of the entire structure, one at each end, and is used to fix the reverse spring sheet in the installation position. The support foot 402 contacts the two ends of the radial sealing sheet 1 to provide additional support and fixation to prevent the radial sealing sheet 1 from shifting when running at high speed.

[0169] like Fig.11As shown, according to the front view of the reverse spring sheet, the reverse spring sheet 4 is composed of 3 sub-reverse spring sheets 401 and their supporting feet; the sub-reverse spring sheets 401 are arranged in parallel to provide uniform preload; the dimension marked in the figure is R=55.50, indicating that the curvature radius of the reverse spring sheet is 55.50 mm, which provides an appropriate preload so that the radial sealing sheet 1 can fit tightly against the rotor surface.

[0170] Specifically, the reverse spring piece 4 is designed to have an arc structure with a radius of 60 mm, which will produce elastic deformation during installation; when the reverse spring piece is installed in the sealing groove, due to its arc design, the spring piece is compressed and elastically deformed, generating an outward elastic force, namely the preload force. The preload force is evenly transmitted to the radial sealing piece 1 through a plurality of parallel sub-reverse spring pieces 401, and the radial sealing piece 1 fits tightly on the surface of the rotor to achieve a sealing effect. Furthermore, the arched design of the reverse spring piece 4 maintains a continuous preload force, and disperses and evenly transmits this force in the radial direction; a plurality of parallel sub-reverse spring pieces 401 can disperse local stress, avoid single-point stress concentration, and thus improve the sealing effect.

[0171] Specifically, the reverse spring sheet support foot 402 contacts the two ends of the radial sealing sheet 1. Relative to the radial sealing sheet 1, the support foot 402 provides additional support and fixation to ensure that the radial sealing sheet 1 will not be displaced when running at high speed; at the same time, whether in a high temperature, high pressure environment or a low temperature, low pressure environment, it can remain in place in various operating conditions of the rotary engine, effectively preventing the radial sealing sheet 1 from shifting or loosening. Furthermore, the reverse spring sheet 4 cooperates with the support foot 402 through elastic preload force to ensure that the radial sealing sheet 1 will not leak during the operation of the rotary engine; thereby improving the reliability and service life of the sealing system.

[0172] Example 7 Setting of curvature parameters of reverse spring sheet 4

[0173] In a specific embodiment, the curvature of the reverse spring sheet 4 is set to a smaller curvature radius (R=50.00), the curvature of the spring sheet increases, the elastic deformation increases, and the preload force is increased. Excessive preload force causes the radial sealing sheet 1 to be in too tight contact with the rotor, increasing wear and directly shortening the service life of the radial sealing sheet 1. At the same time, the smaller curvature radius (R=50.00) causes the spring sheet 3 to require greater force to bend and fix during installation, increasing the difficulty of installation. Although it can be used in high-pressure environments with higher sealing strength, it is obvious that the sealing sheet needs to be replaced frequently.

[0174] In another specific embodiment, the curvature of the reverse spring sheet 4 is set to a larger curvature radius (R=60.00), the curvature radius increases, the curvature decreases, and the elastic deformation decreases, thereby reducing the preload force. Too small a preload force may cause the radial sealing sheet 1 to be in loose contact with the rotor, resulting in an increased risk of leakage and reduced sealing effect. At the same time, too small a preload force causes the radial sealing sheet 1 to be in loose contact with the rotor, resulting in an increased risk of leakage and reduced sealing effect. Although it can be applied to low-pressure environments, it significantly increases the risk of leakage and is not conducive to sealing.

[0175] In another specific embodiment, the curvature of the reverse spring sheet 4 is set to a curvature radius R = 55.50, that is, the radius distance from the center to the top of the arc of the reverse spring sheet is 55.50 mm. Under this parameter, the preload effect is moderate, ensuring that the radial sealing sheet 1 fits tightly against the rotor and has moderate wear; taking into account the conventional high temperature and high pressure environment during the operation of the rotary engine, the sealing effect and the life of the radial sealing sheet 1 are balanced.

[0176] Conclusion: The selection of the curvature radius R = 55.50 mm determines the curvature degree of the reverse spring piece 4, which is based on the working environment and requirements of the sealing system, ensuring that the reverse spring piece 4 provides uniform preload and sufficient elastic compensation during operation. This is a curvature radius selection that balances various factors to ensure the effectiveness and durability of the reverse spring piece 4 in actual work.

[0177] Embodiment 8 Dynamic compensation mechanism of the reverse spring sheet 4

[0178] (1) Thermal expansion compensation

[0179] In a specific embodiment, after the rotary engine is started, the temperature rises rapidly from room temperature to 200 degrees Celsius, the materials of the rotor and the radial sealing sheet 1 expand, and the sealing gap increases. The reverse spring sheet 4 is slightly compressed when the temperature rises, but its elastic preload force makes the radial sealing sheet 1 still close to the rotor to maintain the seal.

[0180] Specifically, during the operation of the rotary engine, the temperature will rise significantly, causing thermal expansion of the materials constituting the radial sealing sheet 1 and the end face sealing strip in the engine and the sealing system. Different materials have different thermal expansion coefficients, resulting in different expansion degrees of the radial sealing sheet 1 and the end face sealing strip under the same temperature change, thereby causing the gap inside the sealing system to change. The reverse spring sheet 4 has an arc structure, and the material itself has elasticity and a compensation effect. Specifically, when the rotary engine is running, the elasticity of the reverse spring sheet 4 can continue to provide preload when the gap changes due to thermal expansion; after the rotary engine has been running for a period of time, the temperature rises, and the sealing gap increases, the reverse spring sheet 4 will be slightly compressed; at this time, the elasticity of the reverse spring sheet 4 can still maintain the preload on the sealing sheet 1, ensuring the close contact between the radial sealing sheet 1 and the rotor surface, and realizing the dynamic adjustment of the rotary engine sealing system; the elastic deformation of the reverse spring sheet 4 can also be restored, and during the operation of the rotary engine, it can dynamically adapt to temperature changes to ensure that the sealing effect is not affected by temperature fluctuations, that is, a thermal expansion compensation mechanism is formed.

[0181] (2) Wear compensation

[0182] In a specific embodiment, after the rotary engine runs for 1000 hours, the surface of the sealing sheet is worn and the thickness is reduced by 0.1 mm. At this time, the reverse spring sheet 4 continues to apply appropriate preload force through elastic adjustment to ensure that the radial sealing sheet 1 is in close contact with the rotor and maintain the sealing performance. On the contrary, if there is no compensation mechanism at this time, the radial sealing sheet 1 will loosen and the sealing effect will decrease.

[0183] Specifically, when the rotary engine runs for a long time, the sealing sheet 1 and other contact parts will wear due to friction and mechanical stress, resulting in a reduction in the thickness of the radial sealing sheet 1, a decrease in sealing performance, and even sealing failure. The elasticity of the reverse spring sheet 4 continues to provide preload when the radial sealing sheet 1 wears. Although the radial sealing sheet 1 gradually wears, the reverse spring sheet 4 will still automatically adjust its elastic deformation degree and maintain pressure on the radial sealing sheet 1. The adaptive elastic compensation ability of the reverse spring sheet 4 allows the radial sealing sheet 1 to still fit tightly against the rotor during wear and maintain the sealing effect.

[0184] Conclusion: The dynamic compensation mechanism of the reverse spring sheet 4 automatically adapts to the gap changes caused by thermal expansion and wear through its elastic design, ensuring that the radial sealing sheet 1 can always maintain close contact with the rotor surface under various working conditions. The reverse spring sheet 4 improves the reliability and durability of the sealing system and ensures that there will be no leakage problems during engine operation.

[0185] Example 9 Dynamic sealing performance of the reverse spring sheet 4

[0186] In a specific embodiment, in a stationary state before the rotary engine is started, the reverse spring piece 4 has been correctly installed on the rotary engine sealing system. The reverse spring piece 4 has an arc structure with a radius of 60 mm, and is compressed during installation to produce elastic deformation, thereby forming a preload; and the reverse spring piece 4 is made of a material with good elasticity, which can meet the elastic performance requirements under high temperature and high pressure environments.

[0187] Specifically, when the rotary engine is started, the reverse spring sheet 4 generates an initial preload force, so that the radial sealing sheet 1 fits tightly with the rotor surface. Specifically, as the temperature and pressure of the rotary engine rise, the reverse spring sheet 4 is further compressed, the elastic deformation increases, and the preload force increases accordingly; the radial sealing sheet 1 always maintains close contact with the rotor surface under the action of the continuously increasing preload force. Specifically, when the temperature of the rotary engine rises to 300 degrees Celsius (when the rotary engine is running stably), all components of the sealing system will undergo thermal expansion. When the material of the reverse spring sheet 4 expands due to heat, its arc structure will be further compressed, increasing the amount of elastic deformation. At this time, the internal pressure of the rotary engine increases to 0.5MPa during operation, and the external force on the radial sealing sheet 1 increases; at this time, the preload force of the reverse spring sheet 4 can offset the increased external force, ensuring that the radial sealing sheet 1 will not be displaced from its position due to the pressure effect generated by the high pressure. Further, the radial sealing sheet 1 is continuously subjected to a stable preload force to prevent any gas or liquid from leaking through the sealing interface.

[0188] Conclusion: With the elastic preload of the reverse spring sheet 4 and the assistance of the support foot 402, the sealing system can work effectively under high temperature and high pressure environment. The elastic deformation of the reverse spring sheet 4 ensures that the radial sealing sheet 1 always fits tightly to the rotor surface, preventing leakage and achieving reliable dynamic sealing performance. This design ensures the safe and efficient operation of the rotary engine under extreme working conditions.

[0189] Embodiment 10 Leakage prevention mechanism of the reverse spring sheet 4 under transition conditions

[0190] In a specific embodiment, a rotary engine experiences various mechanical stresses and vibrations under different operating conditions, including starting, acceleration, deceleration, and shutdown.

[0191] Specifically, during the start-up phase of the rotary engine, it will experience rapid changes from static to running, including rapid increases in temperature and pressure, as well as vibration and impact of mechanical parts. At this time, the elastic preload force of the reverse spring sheet 4 during startup ensures that the radial sealing sheet 1 fits tightly to the rotor surface and is not affected by the vibration and impact during startup. The support foot 402 provides additional support and fixation to prevent the radial sealing sheet 1 from shifting under the high mechanical stress and vibration at the moment of startup. Therefore, the radial sealing sheet 1 still fits tightly to the rotor surface during the startup phase, effectively preventing gas or liquid leakage.

[0192] Specifically, during the acceleration phase of the rotary engine, the speed and load increase rapidly, and the internal temperature and pressure also rise accordingly, generating large mechanical stress and vibration. The elasticity of the reverse spring sheet 4 can dynamically adapt to the mechanical stress and vibration generated during the acceleration process, keeping the preload unchanged. The support foot 402 provides stable support during the acceleration process to prevent the radial sealing sheet 1 from shifting or loosening under high speed and high load. Even when the rotary engine is accelerating, the radial sealing sheet 1 can still fit tightly to ensure that the sealing effect is not affected.

[0193] Specifically, during the deceleration phase of the rotary engine, the speed and load decrease rapidly, and the internal pressure also decreases, but mechanical stress and vibration still exist. The preload of the reverse spring sheet 4 remains stable during the deceleration process, ensuring the close contact between the radial sealing sheet 1 and the rotor surface. The support foot 402 can effectively absorb and alleviate the vibration during the deceleration process to prevent the radial sealing sheet 1 from loosening. When the rotary engine decelerates, the radial sealing sheet 1 remains stable to prevent leakage.

[0194] Specifically, during the stage when the rotary engine is ready to shut down, the speed gradually drops to zero, the temperature and pressure gradually return to the ambient level, and the mechanical parts will experience slight vibration and displacement due to the cessation of movement. The reverse spring sheet 4 maintains its elastic preload after shutdown, so that the radial sealing sheet 1 still fits tightly to the rotor surface in the shutdown state. The support foot 402 continues to provide fixed support after shutdown to prevent the radial sealing sheet 1 from shifting during temperature and pressure changes. Even after the rotary engine is shut down, the radial sealing sheet 1 remains stable without gas or liquid leakage.

[0195] Conclusion: The reverse spring sheet 4 effectively prevents leakage under different engine operating conditions through its elastic preload and the support foot 402. During the start, acceleration, deceleration and shutdown process, the elasticity and support structure of the reverse spring sheet 4 ensure that the radial sealing sheet 1 always fits tightly to the rotor surface, resists various mechanical stresses and vibrations, and maintains the sealing effect unchanged.

[0196] like Fig.12 As shown, the side view of the spring sheet group shows that the spring sheet group is composed of a spring sheet 3 and a reverse spring sheet 4. Specifically, the spring sheet 3 is composed of a sub-spring sheet 301 and a spring sheet support foot 302; the sub-spring sheet 301 can penetrate into the gap of the reverse sub-spring sheet 401; the spring sheet support foot 302 contacts the bottom of the radial sealing sheet 1 to provide support and fixation. Specifically, the reverse spring sheet includes a reverse sub-spring sheet 401 and a reverse spring sheet support foot 402; the reverse sub-spring sheet 401 is staggered with the sub-spring sheet 301 to form an elastic structure; the reverse spring sheet support foot 402 contacts the bottom of the trapezoidal groove 2 to ensure the stable installation of the spring sheet group.

[0197] During the installation process, the spring sheet 3 and the reverse spring sheet 4 are installed in an alternating arrangement, and the sub-spring sheet 301 penetrates into the gap of the reverse sub-spring sheet 401, so that the pressure of the entire spring sheet group can be evenly distributed; the spring sheet support foot 302 is installed at the bottom of the radial sealing sheet 1 to ensure that the bottom contact area is stable and motionless during the operation of the rotor engine; the reverse spring sheet support foot 402 is installed at the bottom of the trapezoidal groove 2 to fix the entire spring sheet group.

[0198] like Fig.13 As shown, the three-dimensional diagram of the spring sheet group intuitively shows the installation method of the spring sheet group; the spring sheet group consists of a spring sheet 3 and a reverse spring sheet 4. Specifically, the spring sheet 3 consists of a sub-spring sheet 301 and a spring sheet support foot 302; the spring sheet 3 consists of a plurality of sub-spring sheets 301 arranged in parallel; the sub-spring sheets 301 and the reverse sub-spring sheets 401 are staggered to form an elastic structure.

[0199] Specifically, the spring sheet 3 is composed of a plurality of sub-spring sheets 301 arranged in parallel; the sub-spring sheets 301 are staggered with the reverse sub-spring sheets 401 to form an elastic structure; the reverse spring sheet 4 is composed of a plurality of reverse sub-spring sheets 401 arranged in parallel; the reverse sub-spring sheets 401 are staggered with the sub-spring sheets 301 to increase the overall elasticity of the spring sheet group. Specifically, the spring sheet support feet 302 are located at both ends of the spring sheet 3, supporting and fixing the bottom of the radial sealing sheet 1; the reverse spring sheet support feet 402 are located at both ends of the reverse spring sheet 4, firmly installed at the bottom of the trapezoidal groove 2. Specifically, the spring sheet 3 is staggered with the reverse spring sheet 4, so that the sub-spring sheet 301 penetrates into the gap of the reverse sub-spring sheet 401, and the pressure on the contact surface is evenly distributed.

[0200] Example 11 Cold start test of spring sheet assembly (spring sheet 3 and reverse spring sheet 4) in low temperature environment

[0201] In a specific embodiment, before assembling the rotary engine, the spring sheet group (spring sheet 3 and reverse spring sheet 4) is compressed to the designed preset stiffness during installation through precise calculation and debugging to ensure that sufficient preload can be provided in a low temperature environment. When assembling the rotary engine system, the spring sheet 3 and the reverse spring sheet 4 need to be installed alternately at the bottom of the radial sealing sheet 1. The spring sheet group (spring sheet 3 and reverse spring sheet 4) is pre-compressed during the installation process to form an initial elastic preload to ensure that the radial sealing sheet 1 is in close contact with the rotor surface during installation. At the same time, it must be ensured that the radial sealing sheet 1 is installed in the trapezoidal groove 2 at the top of the stator. After installation, testing is performed to ensure that the radial sealing sheet 1 is in close contact with the rotor surface at the cold start temperature.

[0202] Specifically, in this specific embodiment, the environmental conditions at this time are a temperature of -20°C and an atmospheric pressure condition (1 atmosphere, about 101.3 kPa). At the moment of cold start of the rotary engine, the preset elastic preload of the spring sheet group (spring sheet 3 and reverse spring sheet 4) takes effect immediately, and the radial sealing sheet 1 fits tightly with the rotor surface under the action of the spring sheet group. The preset elastic preload ensures that there is no gap between the radial sealing sheet 1 and the rotor surface, preventing gas leakage at the moment of starting the rotary engine, and the initial sealing is completed.

[0203] Furthermore, during cold start, the gas in the engine is compressed and the pressure in the cylinder rises. Due to the tight fit of the radial sealing sheet 1, the gas cannot leak into the adjacent combustion chamber or the outside, ensuring the normal start and operation of the rotary engine. On the one hand, the spring sheet group (spring sheet 3 and reverse spring sheet 4) ensures that it can still maintain elasticity in a low temperature environment and will not lose preload due to low temperature; on the other hand, as the rotary engine runs, the temperature gradually rises, and the elastic deformation of the spring sheet group (spring sheet 3 and reverse spring sheet 4) will be dynamically adjusted to continue to maintain close contact between the radial sealing sheet 1 and the rotor surface, thereby achieving dynamic adjustment.

[0204] Performance verification: After multiple cold start tests, it is proved how the preset elastic preload of the spring sheet group (spring sheet 3 and reverse spring sheet 4) ensures the close fit between the radial sealing sheet 1 and the rotor surface during cold start to prevent gas leakage in the initial stage. The preload of the spring sheet group (spring sheet 3 and reverse spring sheet 4) is stable and reliable in low temperature environment, and the radial sealing sheet 1 can always fit closely to the rotor surface to prevent any gas leakage, ensure the normal start and operation of the rotary engine, and maintain the continuous sealing effect during the operation of the rotary engine.

[0205] Example 12 Dynamic Adaptation Test of Spring Leaf Assembly

[0206] In a specific embodiment, the operating conditions of the rotary engine are an operating temperature of 200° C., a gas pressure of up to 1200 psi, and a rotation speed of 5000 RPM.

[0207] Specifically, the changes in the sealing gap during the operation of the rotary engine are as follows: during the operation of the rotary engine, changes in temperature and rotation speed will cause thermal expansion and mechanical deformation of the material, thereby causing changes in the sealing gap. The spring leaf group (spring leaf 3 and reverse spring leaf 4) can dynamically adjust its deformation to adapt to these changes, thereby ensuring continuous close contact between the radial sealing leaf 1 and the rotor surface.

[0208] Specifically, when the rotary engine is started, the spring sheet group (spring sheet 3 and reverse spring sheet 4) provides an initial preload to ensure that the radial sealing sheet 1 is in close contact with the rotor surface; as the temperature of the rotary engine rises, the elastic deformation of the spring sheet group adapts to thermal expansion, and the sealing sheet continues to maintain close contact; when the rotary engine speed reaches 5000RPM, the centrifugal force increases significantly; and then at high speeds, the centrifugal force further presses the radial sealing sheet 1 against the rotor surface, and the elastic deformation of the spring sheet group (spring sheet 3 and reverse spring sheet 4) ensures that the radial sealing sheet 1 automatically adjusts the fit force as the speed increases. The increase in centrifugal force causes the radial sealing sheet 1 to be in closer contact with the rotor surface, preventing any leakage caused by high-speed rotation; specifically, when the gas pressure reaches 1200psi during the combustion process of the rotary engine, the high-pressure gas further presses the radial sealing sheet 1 against the rotor surface to enhance the sealing effect; and the spring sheet group, under the action of the high-pressure gas, further enhances its elastic deformation to ensure that the radial sealing sheet 1 can withstand the sealing requirements under high-pressure environments.

[0209] Performance verification: Through long-term high-load testing, the dynamic adaptability of the spring sheet group (spring sheet 3 and reverse spring sheet 4) under different working conditions is verified to ensure that the sealing system can always fit the rotor tightly to prevent leakage at an operating temperature of 200°C and a gas pressure of 1200psi. Under high temperature, high pressure and high speed conditions, the elastic preload force, centrifugal force and gas pressure of the spring sheet group (spring sheet 3 and reverse spring sheet 4) work together to ensure that the radial sealing sheet 1 always fits tightly to the rotor surface. Regardless of how the load and speed change, the sealing effect is stable and reliable.

[0210] Example 13 Performance Test of Gas Movement

[0211] In a specific embodiment, the rotary engine has three combustion chambers, namely combustion chamber A, combustion chamber B and combustion chamber C; each combustion chamber is equipped with an independent radial sealing plate 1, which is provided with preload and dynamic adaptation by a spring plate group (spring plate 3 and reverse spring plate 4), and the spring plate group is correctly installed. The radial sealing plate 1 of each combustion chamber can work independently, and even if a problem occurs in one radial sealing plate 1, it will not affect the sealing performance of other combustion chambers.

[0212] Specifically, an independent spring sheet group (spring sheet 3 and reverse spring sheet 4) is designed for each combustion chamber to ensure that each radial sealing sheet 1 can independently provide sealing in its respective working environment; and then by independently setting the preload force of each spring sheet group, it is ensured that the radial sealing sheet 1 can closely fit the rotor surface under different working conditions. The spring sheets 3 and reverse spring sheets 4 are arranged in an interlaced manner, and the spring sheets 3 and reverse spring sheets 4 are installed in an interlaced manner to form a stable elastic structure, thereby increasing the elasticity and stability of the overall structure. The spring sheet support foot 302 contacts the bottom of the radial sealing sheet 1, and the reverse spring sheet support foot 402 contacts the bottom of the trapezoidal groove 2, ensuring the stable installation of the spring sheet group (spring sheet 3 and reverse spring sheet 4). The staggered arrangement and stable support structure of the spring sheet group (spring sheet 3 and reverse spring sheet 4) ensure that the gas between the combustion chambers will not move, thereby achieving efficient separation and sealing.

[0213] Specifically, when the rotary engine is running, combustion chamber A, combustion chamber B and combustion chamber C work independently. The radial sealing sheet 1 between combustion chamber A and combustion chamber B maintains close contact under the preload of the spring sheet group (spring sheet 3 and reverse spring sheet 4). When the rotary engine runs for a period of time, under high temperature and high pressure environment (for example, 200°C and 1200psi), the radial sealing sheet 1 can withstand the high-pressure gas in the combustion chamber, prevent the gas from flowing from combustion chamber A to combustion chamber B, and achieve efficient separation and sealing.

[0214] Specifically, by simulating the operating conditions under high temperature and high pressure, during the operation of the rotary engine, the sealing sheet of combustion chamber C was damaged, and an unexpected damage phenomenon occurred; the sealing sheet of combustion chamber C was accidentally damaged, but the spring sheet group (spring sheet 3 and reverse spring sheet 4) can also ensure that the sealing performance of combustion chamber A and combustion chamber B is not affected. The independent sealing design of the spring sheet group (spring sheet 3 and reverse spring sheet 4) realizes local isolation, so that the problem of combustion chamber C will not affect the normal operation of other combustion chambers.

[0215] Performance verification: Even under high temperature and high pressure conditions, the radial sealing sheets 1 between the combustion chambers can work independently to prevent gas from moving and achieve stable and reliable separation sealing. The staggered arrangement and stable support structure of the spring sheet group (spring sheet 3 and reverse spring sheet 4) ensure that the radial sealing sheet 1 of each combustion chamber can provide sealing independently. Even if a radial sealing sheet 1 has a problem, it will not affect the sealing performance of other combustion chambers.

[0216] like Fig.14 As shown, the working description of the spring leaf group (spring leaf 3 and reverse spring leaf 4) in the vertical downward working condition shows the working principle and process of the spring leaf group (spring leaf 3 and reverse spring leaf 4) when the radial sealing leaf 1 moves vertically downward. Fig.13In the figure, the radial sealing sheet 1 is located at the upper part of the figure, and is connected and supported by the spring sheet group and the trapezoidal groove 2. The trapezoidal groove 201 is located at the lower part of the figure, providing support and installation position for the spring sheet group (spring sheet 3 and reverse spring sheet 4). The spring sheet group includes spring sheet 3 and reverse spring sheet 4; spring sheet 3 includes multiple sub-spring sheets 301, which are installed below the radial sealing sheet 1; reverse spring sheet 4 includes multiple sub-reverse spring sheets 401, which are staggered and installed below the spring sheet 3.

[0217] Specifically, when the radial sealing sheet 1 moves vertically downward, the pressure applied to the radial sealing sheet 1 causes it to move downward, compressing the spring sheet group; and then the downward movement of the radial sealing sheet 1 compresses the sub-spring sheet 301; and during the compression process, the top of the sub-spring sheet 301 is close to the radial sealing sheet 1. Then, the spring sheet support foot 302 expands to both sides to provide stable support. Specifically, the sub-reverse spring sheet 401 of the reverse spring sheet 4 is also compressed. During the compression process, the top of the sub-reverse spring sheet 401 is also close to the radial sealing sheet 1, and the reverse spring sheet support foot 402 expands to both sides to ensure the stability of the spring sheet group (spring sheet 3 and reverse spring sheet 4).

[0218] Specifically, the radial sealing sheet 1 will move vertically downward under the action of the rotor movement or the gas pressure; at this time, it includes a spring sheet 3 and a reverse spring sheet 4, which are respectively composed of a sub-spring sheet 301 and a reverse sub-spring sheet 401, and the support feet 302 and 402 are in contact with the radial sealing sheet 1 and the sealing groove respectively. Due to the gas pressure or the rotor movement, the radial sealing sheet 1 is subjected to a vertical downward force. When the radial sealing sheet 1 moves downward, the spring sheet group (including the sub-spring sheet 301 and the reverse sub-spring sheet 401) produces elastic deformation through its elastic design to provide a reaction force. The reaction force ensures that the radial sealing sheet 1 can always fit tightly to the rotor surface to prevent any leakage. During the operation of the rotary engine, no matter what kind of vertical force the radial sealing sheet 1 is subjected to, the spring sheet group (including the sub-spring sheet 301 and the reverse sub-spring sheet 401) can automatically adjust through elastic deformation to provide a continuous preload force to ensure the close contact between the radial sealing sheet 1 and the rotor surface.

[0219] Example 14 High load performance test of spring leaf assembly (vertical downward movement)

[0220] In a specific embodiment, during the startup and operation of the rotary engine, the radial sealing sheet 1 moves downward due to the gas pressure (e.g., reaching 1200 psi) or the high speed of the rotor (the speed reaches 5000 RPM). When the radial sealing sheet 1 moves downward, the spring sheet group (including the sub-spring sheet 301 and the reverse sub-spring sheet 401) provides a reaction force through elastic deformation to maintain the close contact between the radial sealing sheet 1 and the rotor surface. Under high pressure and high speed conditions, the radial sealing sheet 1 can always effectively seal and prevent gas leakage.

[0221] Specifically, when the spring sheet group (including the sub-spring sheet 301 and the reverse sub-spring sheet 401) is subjected to vertical pressure, the support legs 302 and 402 expand to both sides to provide stable lateral support. The lateral expansion can prevent the spring sheet group (including the sub-spring sheet 301 and the reverse sub-spring sheet 401) from becoming unstable during the compression process, thereby ensuring the structural stability of the entire sealing system. Even under high pressure and high speed conditions, the support legs of the spring sheet group (including the sub-spring sheet 301 and the reverse sub-spring sheet 401) still provide stable lateral support to prevent any lateral displacement or instability.

[0222] Specifically, in the test environment, the rotary engine is subjected to a high-load test to simulate high temperature, high pressure and high-speed operating conditions. The radial sealing sheet 1 moves downward due to the gas pressure and the rotor movement, and the spring sheet group (including the sub-spring sheet 301 and the reverse sub-spring sheet 401) provides a reaction force through elastic deformation to keep the radial sealing sheet 1 in close contact. The support feet extend to both sides to provide stable lateral support to prevent the spring sheet group from becoming unstable.

[0223] Performance test: The spring sheet group can provide stable sealing effect and structural stability under various working conditions. The radial sealing sheet 1 always fits tightly to the rotor surface without any leakage. When the radial sealing sheet 1 moves downward, how does the spring sheet group (including the sub-spring sheet 301 and the reverse sub-spring sheet 401) provide a reaction force through its elastic design to ensure that the radial sealing sheet 1 can fit tightly to the rotor surface. The lateral expansion design of the support feet (302 and 402) provides stable lateral support to prevent the spring sheet group (including the sub-spring sheet 301 and the reverse sub-spring sheet 401) from losing stability during the compression process.

[0224] like Fig.15 As shown, the working description of the spring sheet group (including the sub-spring sheet 301 and the reverse sub-spring sheet 401) in the vertical upward working condition shows the working principle and process of the spring sheet group (including the sub-spring sheet 301 and the reverse sub-spring sheet 401) when the radial sealing sheet 1 moves vertically upward. The radial sealing sheet 1 is located in the upper part of the figure, and is connected and supported by the spring sheet group (including the sub-spring sheet 301 and the reverse sub-spring sheet 401) and the trapezoidal groove 2. The trapezoidal groove 2 is located in the lower part of the figure, providing support and installation position for the spring sheet group. The spring sheet group (including the sub-spring sheet 301 and the reverse sub-spring sheet 401) is composed of a spring sheet 3 and a reverse spring sheet 4; the spring sheet 3 includes a plurality of sub-spring sheets 301, which are installed below the radial sealing sheet 1; the reverse spring sheet 4 includes a plurality of sub-reverse spring sheets 401, which are staggered and installed below the spring sheet 3.

[0225] Specifically, when the radial sealing sheet 1 moves vertically upward, the force applied to the radial sealing sheet 1 causes it to move upward, releasing the compression of the spring sheet group (including the sub-spring sheet 301 and the reverse sub-spring sheet 401). Then, the upward movement of the radial sealing sheet 1 causes the sub-spring sheet 301 and the reverse sub-spring sheet 401 to relax. During the relaxation process, the tops of the sub-spring sheet 301 and the reverse sub-spring sheet 401 move away from the radial sealing sheet 1. At the same time, the spring sheet support legs 302 and the reverse spring sheet support legs 402 shrink inward.

[0226] Specifically, when the radial sealing sheet 1 moves upward, the spring sheet group (including the sub-spring sheet 301 and the reverse sub-spring sheet 401) provides a restoring force through its elastic design, ensuring that the radial sealing sheet 1 can return to its original position after the force is released. This restoring force can ensure that the radial sealing sheet 1 can maintain close contact and achieve effective sealing under various working conditions. At the same time, the support feet (302 and 402) of the spring sheet group (including the sub-spring sheet 301 and the reverse sub-spring sheet 401) shrink inward to ensure that the spring sheet group does not lose stability during the relaxation process. The internal shrinkage ensures the structural stability of the entire sealing system and improves the sealing effect and durability.

[0227] Example 15 High load performance test of the spring sheet assembly (including the sub-spring sheet 301 and the reverse sub-spring sheet 401) (when moving vertically upward)

[0228] In a specific embodiment, in a high-load test, the operating conditions of the rotary engine under different working conditions are simulated to test the working effect of the spring sheet group (including the sub-spring sheet 301 and the reverse sub-spring sheet 401) when it moves vertically upward. When the rotary engine or other rotary engines are running, the radial sealing sheet 1 may move vertically upward under the action of the rotor movement or the gas pressure. The spring sheet group includes a spring sheet 3 and a reverse spring sheet 4, which are respectively composed of a sub-spring sheet 301 and a reverse sub-spring sheet 401, and the support feet 302 and 402 are in contact with the sealing sheet and the sealing groove respectively.

[0229] Specifically, the rotor generates an upward force, causing the radial sealing sheet 1 to move upward. When the radial sealing sheet 1 moves upward, the spring sheet group (including the sub-spring sheet 301 and the reverse sub-spring sheet 401) relaxes, providing a restoring force to ensure that the radial sealing sheet 1 can return to its original position after the force is released and continue to fit tightly to the rotor surface. Thus, the restoring force is achieved through the elastic design of the spring sheet and the reverse spring sheet. The support feet (302 and 402) of the spring sheet group contract inward to ensure that the spring sheet group does not become unstable during the relaxation process. The internal contraction design improves the structural stability of the sealing system.

[0230] Test verification: The spring sheet group (including the sub-spring sheet 301 and the reverse sub-spring sheet 401) can provide a stable restoring force when moving vertically upward, ensuring that the radial sealing sheet 1 always fits tightly against the rotor surface without any obvious leakage. When the radial sealing sheet 1 moves vertically upward, how the spring sheet group (including the sub-spring sheet 301 and the reverse sub-spring sheet 401) provides a restoring force through its elastic design to ensure that the radial sealing sheet 1 can fit tightly against the rotor surface. The internal contraction design of the support feet (302 and 402) provides a stable lateral support to prevent the spring sheet group (including the sub-spring sheet 301 and the reverse sub-spring sheet 401) from becoming unstable during the relaxation process.

[0231] like Fig.16 As shown, the working description of the spring sheet group (including the sub-spring sheet 301 and the reverse sub-spring sheet 401) in the left and right swinging working condition shows the working principle and process of the spring sheet group (including the sub-spring sheet 301 and the reverse sub-spring sheet 401) when the radial sealing sheet 1 swings left and right. Fig.15 In the figure, the radial sealing sheet 1 is located at the upper part of the figure, and is connected and supported by the trapezoidal groove 201 through the spring sheet group (including the sub-spring sheet 301 and the reverse sub-spring sheet 401); the trapezoidal groove 2 is located at the lower part of the figure, providing support and installation position for the spring sheet group; the spring sheet group consists of a spring sheet 3 and a reverse spring sheet 4, the spring sheet 3 includes a plurality of sub-spring sheets 301, which are installed below the radial sealing sheet 1; the reverse spring sheet 4 includes a plurality of sub-reverse spring sheets 401, which are staggered and installed below the spring sheet 3.

[0232] Furthermore, the working principle of the left-right swing of the radial sealing sheet 1 is as follows: when the radial sealing sheet 1 swings left-right due to the movement of the rotor or the pressure of the gas, the sealing sheet will exert force on the spring sheet group, causing the spring sheet group to produce different compression and release actions. During the swinging process, the force of the sealing sheet is transmitted to the spring sheet group, causing the spring sheet groups on the left and right sides to produce different deformations.

[0233] Specifically, when the radial sealing sheet 1 swings left and right, it will produce different compression and release effects on the spring sheet group.

[0234] Further, the working principle of the spring sheet group: from the perspective of left swing, it is necessary to go through compression on the left side and release on the right side. When the radial sealing sheet 1 swings to the left, the sub-spring sheet 301 and the sub-reverse spring sheet 401 on the left are compressed. Compression allows these spring sheets to store energy and provide a reaction force to push the sealing sheet back to the center position. At the same time, the sub-spring sheet and the sub-reverse spring sheet 401 on the right are released. During the release process, the spring sheet on the right releases the stored energy so that the sealing sheet continues to be balanced when it swings back to the middle position. From the perspective of right swing, it is necessary to go through compression on the right side and release on the left side. When the radial sealing sheet 1 swings to the right, the sub-spring sheet 301 and the sub-reverse spring sheet 401 on the right are compressed. Compression also allows these spring sheets to store energy and provide a reaction force to push the sealing sheet back to the center position. At the same time, the sub-spring sheet 301 and the sub-reverse spring sheet 401 on the left are released. During the release process, the spring sheet on the left releases the stored energy so that the sealing sheet continues to be balanced when it swings back to the middle position. Furthermore, the spring sheet group ensures that when the sealing sheet swings left and right, a dynamic balance of force is achieved through compression and release actions, ensuring that the sealing sheet can quickly return to its initial position. Furthermore, the spring sheet group can dynamically adapt to the movement of the sealing sheet, provide continuous preload through its elastic deformation, and ensure that the sealing sheet is in close contact with the rotor surface under various working conditions.

[0235] Example 16 High-load performance test of spring leaf assembly (left-right swing condition)

[0236] In a specific embodiment, the radial sealing sheet 1 will swing left and right under the action of the rotor movement or the gas pressure. The spring sheet group includes a spring sheet 3 and a reverse spring sheet 4, which are respectively composed of a sub-spring sheet 301 and a reverse sub-spring sheet 401. During the operation of the rotary engine, the rotor may generate a left and right swinging force, causing the radial sealing sheet 1 to swing left and right. When the sealing sheet swings left and right, the spring sheet group provides a restoring force through compression and release to ensure that the sealing sheet can continue to fit closely to the rotor surface during the movement. Furthermore, during the compression and release process, the spring sheet group provides stable lateral support through elastic deformation to prevent instability during the swinging process.

[0237] In the high-load test, the working effect of the spring sheet group when swinging left and right is tested by simulating the operating conditions of the engine under different working conditions. Specifically, during the operation of the rotary engine, due to the high-speed movement of the rotor or the fluctuation of the gas pressure, the radial sealing sheet 1 will swing left and right. When the rotor movement or the gas pressure causes the radial sealing sheet 1 to swing to the left, the spring sheet group on the left is subjected to compression force, stores energy and generates a reaction force. The sub-spring sheet 301 and the sub-reverse spring sheet 401 on the left are compressed, the spring sheet on the right is released, and the sealing sheet gradually returns to the middle position under the action of the reaction force. Through the compression and release action of the spring sheet group, the radial sealing sheet 1 can quickly return to its original position after swinging and continue to fit the rotor surface closely. When the rotor movement or the gas pressure causes the radial sealing sheet 1 to swing to the right, the spring sheet group on the right is subjected to compression force, stores energy and generates a reaction force. The sub-spring sheet 301 and the sub-reverse spring sheet 401 on the right are compressed, the spring sheet on the left is released, and the radial sealing sheet 1 gradually returns to the middle position under the action of the reaction force. Through the compression and release action of the spring sheet group, the radial sealing sheet 1 can quickly return to its original position after swinging and continue to fit closely to the rotor surface.

[0238] Furthermore, the elastic design of the spring sheet assembly (including the sub-spring sheet 301 and the reverse sub-spring sheet 401) provides a continuous restoring force, ensuring that the sealing sheet can quickly return to its initial position during the left-right swinging process.

[0239] Furthermore, the compression and release action of the spring sheet assembly (including the sub-spring sheet 301 and the reverse sub-spring sheet 401) provides lateral stability, preventing the sealing sheet from losing stability during the swinging process, and ensuring the overall stability and reliability of the sealing system.

[0240] Test verification: The spring sheet group (including the sub-spring sheet 301 and the reverse sub-spring sheet 401) can provide a stable restoring force during the left and right swing process, ensuring that the radial sealing sheet 1 always fits tightly against the rotor surface without obvious leakage. The spring sheet group provides compression and restoring force, and the compression and release process provides stable lateral support to prevent the spring sheet group (including the sub-spring sheet 301 and the reverse sub-spring sheet 401) from becoming unstable during the swing process.

[0241] like Fig.17 As shown, the self-sealing diagram 1 shows the self-sealing of the radial sealing sheet 1 system under the action of high pressure gas. Specifically, Fig.17 In the figure, the upper part shows the direction of action of the high-pressure gas, and the arrow points to the radial sealing sheet 1, indicating that the high-pressure gas is applied above the radial sealing sheet 1; the lower part of the figure shows the high-pressure gas entering the sealing system, and the arrow points upward, indicating that the high-pressure gas supports the sealing sheet through the action of the sealing system.

[0242] Specifically, high-pressure gas enters the bottom of the radial sealing piece 1 from the air guide groove on the side plate of the radial sealing piece 1, the high-pressure gas expands, the radial sealing piece 1 moves upward, the compression amount of the reverse spring piece and the spring piece decreases, the side gap of the radial sealing piece 1 becomes smaller, and the gap between the rotor and the radial sealing piece 1 becomes smaller and fits better, thereby reducing the gap and reducing air leakage, thereby achieving a self-sealing effect. In addition, due to the introduction of high-pressure gas, the force on the spring is reduced and the life of the spring is increased.

[0243] Specifically, through Fig.17 The self-sealing diagram 1 shows in detail the self-sealing principle of the radial sealing sheet 1 system under the action of high-pressure gas: when high-pressure gas is applied to the radial sealing sheet 1, the gas pressure is transmitted to the spring sheet group (including the sub-spring sheet 301 and the reverse sub-spring sheet 401) through the radial sealing sheet 1, and the force of the high-pressure gas presses the radial sealing sheet 1 downward, causing the spring sheet group (including the sub-spring sheet 301 and the reverse sub-spring sheet 401) to undergo elastic deformation; the high-pressure gas compresses the sub-spring sheet 301 and the reverse sub-spring sheet 401 in the spring sheet group; the pressure The contracted spring sheet group generates a reaction force, pushing the radial sealing sheet 1 upward to offset part of the force of the high-pressure gas; after the high-pressure gas is transmitted to the spring sheet group through the radial sealing sheet 1, part of the gas enters the interior of the sealing system; the high-pressure gas entering the interior lifts up the radial sealing sheet 1 through the force acting on the spring sheet group (including the sub-spring sheet 301 and the reverse sub-spring sheet 401), further enhancing the sealing effect; further, the supporting effect of the high-pressure gas makes the radial sealing sheet 1 fit the rotor surface more closely, preventing gas leakage and forming a self-sealing effect.

[0244] like Fig.18 As shown, the self-sealing diagram shows the principle of the radial sealing plate 1 achieving self-sealing under the movement of the rotor. Fig.18 In the figure, the upper part shows the position of the rotor, indicating the direction of the force applied by the rotor during movement; the arrow indicates the position where the gap decreases, indicating that the contact between the radial sealing sheet 1 and the rotor surface is getting closer and closer; the spring sheet group (including the sub-spring sheet 301 and the reverse sub-spring sheet 401) is located in the lower part of the figure, including multiple sub-spring sheets 301 and sub-reverse spring sheets 401.

[0245] Specifically, through Fig.18 The self-sealing diagram (Figure (a)) shows in detail the principle of self-sealing when the radial sealing sheet 1 is concave as the rotor moves. The radial sealing sheet 1 has an inwardly concave edge (such as Fig.18(a) shows that, under the action of the rotor, the gap between the radial sealing sheet 1 and the rotor surface gradually decreases. When the rotor moves, the radial sealing sheet 1 is compressed by the force of the rotor (force applied downward), making the contact between the radial sealing sheet 1 and the rotor surface closer. At this time, the concave edge enables the radial sealing sheet 1 to better fit the rotor surface when subjected to external force, thereby reducing the gap and achieving a self-sealing effect. The arrow in the figure indicates the position where the gap is reduced, indicating that the contact between the radial sealing sheet 1 and the rotor surface is getting closer and closer, thereby ensuring the sealing.

[0246] From the principle of mechanical sealing, in Figure (a), the radial sealing sheet 1 is designed to have a concave edge structure. The core idea of ​​mechanical sealing is to prevent fluid leakage by controlling the pressure and contact state of the sealing surface. In this structure, the radial sealing sheet 1 is subjected to radial pressure applied by the rotor during the rotation of the rotor (as shown by the vertical arrow in the figure). Since the radial sealing sheet 1 has elasticity and a certain degree of flexibility, the concave edge gradually fits the rotor surface after being subjected to force. As the pressure increases, the contact area between the radial sealing sheet 1 and the rotor increases, and the contact pressure rises, thereby improving the sealing effect.

[0247] From the principle of fluid mechanics, the sealing system needs to consider the dynamic pressure, viscosity and flow characteristics of the fluid. In Figure (a), as the rotor rotates, the fluid on the rotor surface generates an outward pressure, and the concave radial sealing plate 1 structure helps to offset or reduce this pressure. As the gap between the radial sealing plate 1 and the rotor surface gradually decreases, the speed of the fluid passing through the sealing gap slows down, the dynamic pressure drops, and the possibility of leakage is further reduced. In addition, the tiny gap between the radial sealing plate 1 and the rotor surface will form a so-called "thin film fluid" effect, which helps to form a stable fluid film on the sealing surface, thereby reducing friction and wear, and further enhancing the airtightness of the seal.

[0248] From the principle of air tightness, air tightness is one of the core requirements of the sealing system. Figure (a) takes into account how the radial sealing plate 1 maintains high air tightness when the rotor rotates at high speed. Since the concave structure of the radial sealing plate 1 forms a closer contact with the rotor surface under the action of the rotor, the edge of the radial sealing plate 1 can better resist the leakage path of the fluid, ensuring uniform pressure distribution on the sealing surface, thereby enhancing the overall air tightness. In addition, the concave edge of the radial sealing plate 1 helps to establish a gradually shrinking channel between the radial sealing plate 1 and the rotor surface, which not only reduces the risk of fluid leakage, but also uses the pressure gradient of the fluid to further compress the radial sealing plate 1, so that it better fits the rotor surface, forming a "self-enhanced" sealing effect.

[0249] In terms of self-sealing and thermal effects, as the rotor rotates, local friction may generate heat, which will affect the physical properties of the sealing material. The concave radial sealing sheet 1 can still maintain its effective sealing in this case. The concave radial sealing sheet 1 provides a certain elastic buffer zone, which can continue to maintain close contact with the rotor when the material expands due to heat, reducing the risk of sealing failure caused by thermal expansion.

[0250] In terms of elastic restoring force, the spring sheet group (sub-spring sheet 301 and reverse sub-spring sheet 401) below the radial sealing sheet 1 plays a key role in the entire system. The spring sheet group provides a restoring force. When the external pressure changes, the radial sealing sheet 1 can use the reaction force of the spring sheet group (sub-spring sheet 301 and reverse sub-spring sheet 401) to adjust its contact state with the rotor surface; thereby ensuring the dynamic response capability of the sealing system and maintaining good sealing even in the case of pressure fluctuations.

[0251] therefore, Fig.18 The radial sealing sheet 1 in (a) can effectively reduce the gap and enhance the sealing effect when the rotor rotates at high speed by combining the basic principle of mechanical sealing, the pressure control method in fluid mechanics, and the airtightness requirement. The concave edge of the radial sealing sheet 1 not only improves the sealing sheet's fit ability, but also forms an adaptive sealing system by utilizing the dynamic pressure and elastic restoring force of the fluid, thereby ensuring efficient airtightness and reliability.

[0252] Specifically, through Fig.18 The self-sealing diagram (Figure (b)) shows in detail the principle of self-sealing when the radial sealing sheet 1 is convex as the rotor moves. The radial sealing sheet 1 has an edge that bulges outward (as shown in Figure (b)). Similarly, under the action of the rotor, the gap between the radial sealing sheet 1 and the rotor surface gradually decreases. In this case, when the rotor moves, the radial sealing sheet 1 is pressed against the rotor surface under the force of the rotor, and the raised edge enables the radial sealing sheet 1 to better resist the rotor surface. Similarly, as the rotor moves, the gap between the radial sealing sheet 1 and the rotor gradually decreases, ensuring the sealing effect. At this time, the convex edge of the radial sealing sheet 1 enables the radial sealing sheet 1 to more effectively prevent air leakage or leakage.

[0253] From the principle of mechanical seal, Fig.18In (b), the edge of the radial sealing sheet 1 is an outwardly protruding structure. The convex edge of the radial sealing sheet 1 can enhance the sealing performance through mechanical contact when the rotor rotates. When the rotor applies force (indicated by the arrow in the figure), the raised edge will be pressed against the rotor surface, increasing the contact area and contact pressure of the radial sealing sheet 1 with the rotor. Due to the increase in contact area, the surface pressure of the radial sealing sheet 1 is more evenly distributed, reducing the local stress concentration phenomenon, thereby reducing the risk of seal failure and helping to maintain stable sealing performance during long-term operation.

[0254] From the perspective of fluid mechanics, the sealing structure needs to take into account the pressure distribution and flow characteristics of the fluid. Fig.18 In (b), as the rotor rotates, the flow of fluid between the radial sealing sheet 1 and the rotor surface is affected by the raised edge. The convex edge of the radial sealing sheet 1 forms a relatively narrower channel during the fluid flow process, reducing the flow rate of the fluid through the sealing surface. The convex edge of the radial sealing sheet 1 helps to improve the sealing sheet's ability to resist fluid impact and prevent fluid from leaking from the tiny gap between the radial sealing sheet 1 and the rotor. By controlling the flow path and flow rate of the fluid, the convex edge of the radial sealing sheet 1 can more effectively utilize the principles of fluid mechanics and enhance the sealing effect.

[0255] From the principle of air tightness, air tightness is one of the core requirements of the sealing system. In Figure (b), the raised edge of the radial sealing sheet 1 enables the radial sealing sheet 1 to better fit the rotor surface, thereby enhancing the air tightness of the sealing system. As the rotor rotates, the radial sealing sheet 1 gradually tightens under the action of the convex edge, reducing the gap between the radial sealing sheet 1 and the rotor. The raised edge of the radial sealing sheet 1 effectively prevents the gas from leaking through the tiny gap between the radial sealing sheet 1 and the rotor, thereby improving the air tightness of the overall system. Especially under high-pressure conditions, the raised edge of the radial sealing sheet 1 can withstand a larger pressure difference, prevent gas leakage, and ensure the overall sealing performance of the radial sealing sheet 1.

[0256] From the perspective of thermal effect and elastic restoring force, as the rotor rotates, the sealing system may generate heat due to friction. The raised edge of the radial sealing sheet 1 provides a certain structural stability, and the radial sealing sheet 1 can maintain its sealing performance even under high temperature conditions. In addition, the spring sheet group (including the sub-spring sheet 301 and the reverse sub-spring sheet 401) below the radial sealing sheet 1 can provide additional elastic restoring force. When the system pressure or temperature changes, the spring sheet group (including the sub-spring sheet 301 and the reverse sub-spring sheet 401) can quickly adjust the position and contact state of the radial sealing sheet 1. The elastic restoring force ensures that the radial sealing sheet 1 always maintains close contact with the rotor surface to prevent sealing failure caused by thermal expansion or pressure fluctuations.

[0257] therefore, Fig.18 The self-sealing principle in (b) relies on the design of the convex edge, which achieves continuous close contact between the radial sealing sheet 1 and the rotor surface by combining mechanical pressure, fluid mechanics and elastic restoring force. The raised edge of the radial sealing sheet 1 can form a gradually enhanced sealing effect when the rotor moves, reducing the risk of leakage. When the rotor moves, the convex edge not only effectively reduces the gap, but also uses the fluid mechanics effect to control the fluid flow, thereby enhancing the overall sealing effect. Ultimately, the raised edge of the radial sealing sheet 1 provides stable and efficient sealing performance under different operating conditions to prevent gas or liquid leakage.

[0258] Example 17 Self-sealing test under high pressure gas

[0259] In a specific embodiment, a high-performance rotary engine operates under high-load conditions, and the pressure in the combustion chamber is as high as 1200psi, and the temperature can reach 400°C, generating high-pressure gas. The high-pressure gas in the combustion chamber is transmitted to the spring sheet group through the radial sealing sheet 1; the high-pressure gas entering the sealing system further lifts the radial sealing sheet 1 through the force acting on the spring sheet group (including the sub-spring sheet 301 and the sub-reverse spring sheet), thereby enhancing the sealing effect. The high-pressure gas is applied to the radial sealing sheet 1, and the gas pressure is transmitted to the spring sheet group through the radial sealing sheet 1. The high-pressure gas causes the sub-spring sheet 301 and the sub-reverse spring sheet 401 of the spring sheet group to be compressed and deformed; during the compression process, the spring sheet group stores elastic energy and is ready to release the reaction force. The compression deformation of the spring sheet group generates a reaction force; the reaction force pushes the radial sealing sheet 1 upward to offset part of the force of the high-pressure gas, ensuring that the radial sealing sheet 1 is in close contact with the rotor surface. At this time, part of the high-pressure gas enters the sealing system; the internal high-pressure gas further lifts the sealing sheet through the lifting force acting on the spring sheet group, thereby enhancing the sealing effect.

[0260] Furthermore, the support effect of the high-pressure gas makes the sealing sheet fit the rotor surface more closely, preventing any gas leakage. The spring plate group dynamically adapts to the force of the high-pressure gas through its elastic design to ensure a continuous and tight fit.

[0261] Furthermore, under the continuous action of high-pressure gas, the radial sealing sheet 1 and the spring sheet group (including the sub-spring sheet 301 and the sub-reverse spring sheet 401) work together; the reaction force provided by the spring sheet group and the lifting force of the high-pressure gas work together to achieve a continuous and effective self-sealing effect.

[0262] Test verification: The radial sealing sheet 1 can fit tightly to the rotor surface under the action of high-pressure gas without gas leakage. The high-pressure gas generates a reaction force by compressing the spring sheet group, and at the same time, part of the gas enters the sealing system, generating a supporting effect, so that the radial sealing sheet 1 fits the rotor surface more closely, preventing gas leakage and achieving a continuous and effective self-sealing effect. The sealing system maintains a continuous and stable self-sealing effect under high pressure and high temperature conditions, significantly improving the sealing performance and system durability.

[0263] Example 18 Self-sealing test under rotor motion

[0264] In a specific embodiment, the operating environment of the engine under high load conditions is simulated by precision instruments. The test equipment includes a high pressure gas generator, a high temperature environment controller, and a data acquisition system. The rotary engine is operated under simulated high pressure (1200psi) and high temperature (400°C) conditions, and the parameters of the high pressure gas generator and the high temperature environment controller are set to 1200psi and 400°C. The test rotary engine is installed to ensure that the radial seal 1 and the spring plate group are correctly in place.

[0265] Specifically, the rotor engine is started, and the pressure and temperature are gradually increased to the preset values. After reaching 1200psi and 400°C, the stable conditions are maintained for a period of time (e.g., 2 hours) to observe the initial response of the sealing system. The contact pressure and displacement between the radial sealing sheet 1 and the rotor surface are recorded in real time using a sensor. Any possible gas leakage is monitored, and the leakage amount is recorded through a data acquisition system.

[0266] Specifically, the test environment was continued, and the equipment was used to simulate the long-term operation of the rotary engine under high pressure and high temperature conditions. The rotary engine was continuously operated for 500 hours under high pressure (1200psi) and high temperature (400°C). The stability and effectiveness of the sealing system were observed, and the contact state changes between the radial sealing sheet 1 and the rotor surface and the changes in the sealing performance were recorded.

[0267] Test verification: During the entire high-load test process, there was no obvious leakage, and the radial seal 1 always maintained close contact with the rotor surface. The contact state between the radial seal 1 and the rotor surface was stable, and data acquisition showed that the sealing performance did not decrease significantly. In addition, long-term (500 hours) running tests showed that the sealing system can maintain a stable sealing effect under harsh working conditions. During the test, the sealing system was able to maintain a tight fit under the action of rotor movement and high-pressure gas to prevent any gas leakage, proving its excellent sealing performance and reliability. The long-term running test further verified the durability and stability of the sealing system, ensuring that it can maintain a continuous and effective self-sealing effect even under harsh working conditions, significantly extending the service life of the sealing system.

[0268] Example 19 Self-sealing test of radial sealing sheet 1 with concave edge under different working conditions

[0269] In a number of specific embodiments, the application of the radial sealing sheet 1 under different working conditions is demonstrated. The concave edge of the radial sealing sheet 1 can provide reliable sealing performance in high temperature and high pressure, low temperature and low pressure, high speed and corrosive environment by optimizing the contact between the radial sealing sheet 1 and the rotor surface. The concave edge of the radial sealing sheet 1 meets the self-sealing design, ensuring the safety, stability and efficiency of the cycloid rotor engine sealing system, so that the radial sealing sheet 1 can work normally under various extreme conditions.

[0270] (1) High temperature and high pressure conditions

[0271]

[0272] In a specific embodiment, in high temperature and high pressure conditions, the radial sealing sheet 1 needs to withstand extreme thermal stress and pressure changes. During the operation of the sealing system of the cycloid rotor engine, the radial sealing sheet 1 may face challenges of thermal expansion and material aging.

[0273] Under high temperature and high pressure conditions, the concave edge of the radial sealing sheet 1 can maintain a stable self-sealing effect under high temperature and high pressure. Due to the concave edge of the radial sealing sheet 1, the radial sealing sheet 1 can form a tighter fit under the force of the rotor, reducing the gap change caused by thermal expansion. At the same time, the choice of material (silicon carbide) of the radial sealing sheet 1 can further enhance the high temperature stability of the radial sealing sheet 1 and prevent sealing failure caused by temperature increase.

[0274] Test results: Under high temperature and high pressure conditions, the concave edge of the radial sealing plate 1 ensures close contact between the radial sealing plate 1 and the rotor, which can effectively prevent lubricating oil leakage even under high temperature and high pressure, thereby ensuring the safety and efficiency of the system.

[0275] (2) High speed conditions

[0276]

[0277] In a specific embodiment, in a high-speed rotating cycloidal rotor engine, the seal must be able to withstand the centrifugal force at high speed while preventing lubricating oil from leaking.

[0278] Under high speed conditions, the concave edge of the radial sealing sheet 1 can utilize the centrifugal force of the rotor to make the radial sealing sheet 1 fit the rotor surface more closely. The concave edge of the radial sealing sheet 1 makes the centrifugal force and the contact force of the radial sealing sheet 1 mutually enhance each other, further reducing the sealing gap and preventing oil leakage caused by high-speed rotation. At the same time, the material of the radial sealing sheet 1 is silicon carbide, which needs to have good wear resistance and low friction coefficient to reduce wear caused by high-speed rotation.

[0279] Test results: Under high-speed conditions, the radial sealing sheet 1 maintains a stable sealing effect through the synergistic effect of the concave edge and the centrifugal force, effectively preventing the leakage of lubricating oil and extending the service life of the cycloid rotor engine sealing system.

[0280] Example 20 Self-sealing test of radial sealing sheet 1 with convex edge under different working conditions

[0281] In a number of specific embodiments, the application of the convex edge design of the radial sealing sheet 1 in Figure (b) under different working conditions is demonstrated. Through the self-sealing design of the convex edge of the radial sealing sheet 1, the radial sealing sheet 1 can maintain stable sealing performance under extreme conditions such as high temperature, high pressure, low temperature, corrosive environment and high speed, prevent gas or liquid leakage, and ensure the safety and reliability of the system.

[0282] (1) High temperature conditions

[0283]

[0284] In a specific embodiment, under high temperature conditions, the radial sealing sheet 1 needs to cope with the problems of thermal expansion and material softening. The sealing system of the cycloid rotor engine requires that the radial sealing sheet 1 can maintain stable sealing performance in a high temperature environment.

[0285] Under high temperature conditions, the raised edge of the radial sealing sheet 1 enables the radial sealing sheet 1 to fit more closely to the rotor surface when subjected to downward pressure from the rotor. Under high temperature conditions, the material of the radial sealing sheet 1 will expand or soften, but the convex edge can press the radial sealing sheet 1 against the rotor surface through its structural characteristics, thereby keeping the sealing gap reduced and ensuring the sealing effect. In order to cope with high temperatures, the material of the radial sealing sheet 1 is made of high temperature resistant metal (silicon carbide) to further enhance the reliability of the seal.

[0286] Test results: In a high temperature environment, the radial sealing sheet 1 with a convex edge effectively prevents leakage of high temperature gas, ensuring the safe and stable operation of the sealing system of the cycloid rotor engine.

[0287] (2) High pressure conditions

[0288]

[0289] In a specific embodiment, in a high pressure system, the radial sealing sheet 1 must be able to withstand extremely high pressure without deformation or leakage. The hydraulic system requires the radial sealing sheet 1 to provide reliable sealing performance under high pressure.

[0290] Under high pressure environment, the raised edge of radial sealing sheet 1 enables radial sealing sheet 1 to be further attached to the rotor surface when subjected to the force of high pressure liquid. The raised edge of radial sealing sheet 1 converts external pressure into inward pressing force, further reducing the gap between radial sealing sheet 1 and the rotor. The radial sealing sheet 1 made of high pressure resistant material (silicon carbide) can withstand extreme conditions under high pressure environment and maintain its sealing performance.

[0291] Test results: Under high pressure conditions, the radial sealing sheet 1 with a convex edge effectively prevents leakage of hydraulic oil and ensures the reliability and durability of the sealing system of the cycloid rotor engine.

[0292] (3) High speed operating conditions

[0293]

[0294] In a specific embodiment, in a high-speed rotating cycloid rotor engine, the radial sealing sheet 1 needs to withstand a strong centrifugal force while preventing lubricating oil from leaking.

[0295] Under high speed conditions, the raised edge of the radial sealing sheet 1 enables the radial sealing sheet 1 to form a closer contact with the rotor surface under the action of centrifugal force. The raised edge of the radial sealing sheet 1 uses centrifugal force to press the radial sealing sheet 1 against the rotor surface, reducing the gap and enhancing the sealing effect. The material of the radial sealing sheet 1 is silicon carbide, which needs to have high wear resistance and low friction coefficient to ensure that it will not fail due to friction overheating during high-speed rotation.

[0296] Test results: Under high-speed conditions, the convex edge of the radial sealing sheet 1 enhances the sealing effect of the cycloid rotor engine through centrifugal force, effectively prevents the leakage of lubricating oil, and ensures the long-term stable operation of the cycloid rotor engine.

[0297] like Fig.19 The figure shows the working instructions of the multi-stage sealing piece, which demonstrates the working principle of the multi-stage sealing piece in a high-pressure gas environment.

[0298] Fig.19In the figure, the position of the rotor is shown at the top, indicating the contact relationship between the rotor and the radial sealing sheet 1 during the movement; the arrows on the left and right sides of the figure indicate the direction of action of the high-pressure gas, and the arrows point to the radial sealing sheet 1; the figure shows a plurality of sub-sealing sheets 101 (labeled a, b, c, etc.), each of which is supported and sealed by its corresponding spring sheet; the sealing sheets with slashes in the figure (1 and 7) indicate damaged sealing sheets, and the black dots indicate the debris in the sealing system. Fig.19 It can be seen that no matter whether the edge shape of the radial sealing sheet 1 is concave or convex, the contact relationship between the rotor and the radial sealing sheet 1 during the movement is consistent.

[0299] Specifically, under normal working conditions, high-pressure gases on both sides enter from one side of the radial sealing plate 1. If the current first-stage sealing plate is in tight contact, sealing can be completed. If there is a problem with the current sealing plate, the high-pressure gas will go through the gap to the next-stage sealing plate. If the sealing effect of this stage of sealing plate is good, sealing can be completed. If there is a problem with the sealing effect, it will go to the next-stage sealing. Multi-stage sealing plates back up each other.

[0300] Specifically, when the sub-sealing sheet 101 is damaged, high-pressure gas enters from the edge sub-sealing sheet 101 to complete partial sealing, and the remaining high-pressure gas continues to enter the sub-sealing sheet 101. The damaged sub-sealing sheet 101 has no sealing effect, so it goes to the sub-sealing sheet 101. Since the sub-sealing sheet 101 has a good sealing effect, the sealing can be completed at the sub-sealing sheet 101.

[0301] Specifically, during the operation of the rotary engine, a number of debris will appear, and after appearing, the debris will enter the area of ​​the two sub-sealing sheets 101, so as to prevent the debris from scratching the rotor surface.

[0302] Furthermore, the working principle of the multi-stage sealing plate is as follows: high-pressure gas is applied to the radial sealing plate 1 and multiple sub-sealing plates 101 from the left and right sides, and the high-pressure gas is transmitted to the spring plate group through the sealing plate, causing the spring plate to undergo elastic deformation and store energy. Then, the high-pressure gas causes the spring plate of the sub-sealing plate 101 to undergo compression deformation, and the compression deformation generates a reaction force, which pushes the sub-sealing plate 101 to adhere to the rotor surface to ensure the sealing effect. Since each sub-sealing plate 101 works independently through its corresponding spring plate, a multi-stage sealing structure is formed; multiple sub-sealing plates 101 work together to enhance the overall sealing effect and prevent high-pressure gas leakage. Even if some sub-sealing plates 101 (such as 1 and 7) are damaged, other sub-sealing plates 101 in the multi-stage sealing structure can continue to work effectively and maintain sealing performance. The multi-stage sealing plate can accommodate debris in the system to prevent it from seriously affecting the sealing performance.

[0303] Further, in a high-performance rotary engine, the contact relationship between the rotor and the radial sealing sheet 1 is as follows: when the high-performance rotary engine is stationary, the radial sealing sheet 1 is installed in the gap between the stator and the rotor, maintaining a moderate preload to ensure the initial sealing effect. At this time, the spring sheet group (including the sub-spring sheet 301 and the sub-reverse spring sheet 401) provides the initial elastic preload to make the radial sealing sheet 1 in close contact with the rotor surface. The rotor and the radial sealing sheet 1 complete the static initial contact. Specifically, when the high-performance rotary engine is started, the rotor begins to rotate, generating centrifugal force and gas pressure, which act on the radial sealing sheet 1 and the sub-sealing sheet 101; at this time, the centrifugal force and the gas pressure make the radial sealing sheet 1 in closer contact with the rotor surface. The spring sheet group undergoes elastic deformation under the action of the centrifugal force and the gas pressure, providing a reaction force to ensure that the radial sealing sheet 1 continues to be in close contact with the rotor surface. The spring sheet group continuously adjusts the position of the radial sealing sheet 1 according to the movement of the rotor to maintain a stable sealing effect. Specifically, when the rotor moves under high load conditions, the rotor rotates at high speed, and the high-pressure gas (e.g., 1200 psi) in the combustion chamber is applied to the radial sealing sheet 1 and multiple sub-sealing sheets 101, forming pressure transmission; the high-pressure gas causes the sub-sealing sheet 101 spring sheet in the spring sheet group to compress and deform, storing energy. Under the action of the generated high-pressure gas, the radial sealing sheet 1 is in closer contact with the rotor surface, ensuring that there is no gap to prevent gas leakage. Further, multiple sub-sealing sheets 101 work independently through their respective spring sheet groups to form a multi-stage sealing structure; the sealing effects of multiple sub-sealing sheets 101 are superimposed layer by layer, dispersing the pressure brought by the rotor movement, reducing the burden of a single sealing sheet, and improving the reliability of the system. Further, in terms of pressure distribution, in the multi-stage sealing design, multiple sub-sealing sheets 101 share the high-pressure and high-temperature pressure to prevent excessive concentration of pressure. In addition, each sub-sealing sheet 101 only needs to bear a part of the pressure, reducing the burden of a single radial sealing sheet 1, and improving the reliability and durability of the sealing system. On the contrary, if a traditional single-stage seal is used, all high pressure and high temperature pressure will be concentrated on one seal, which may easily lead to overload failure of the seal.

[0304] In addition, some sub-sealing sheets 101 (such as Fig.18 1 and 7) in the figure, the other sub-sealing sheets 101 can still work effectively and maintain the sealing performance; thus, the design of the multi-stage sealing sheet ensures that even if some of the sealing sheets fail, the overall sealing effect is not significantly affected. In addition, the structure of the multi-stage sealing sheet can accommodate debris in the system, and the debris is accommodated by the gaps between the multiple sub-sealing sheets 101, preventing it from wearing the sealing sheet and the rotor surface, thereby extending the service life of the system.

[0305] Example 21 Sealing effect of multi-stage sealing sheet system under high pressure environment

[0306] In a specific embodiment, under high load conditions, the continuous movement of the rotor and the high-pressure gas exert pressure on the sealing plate; and the high-performance rotary engine simulates high pressure (1200psi) and high temperature (200°C) conditions. The multi-stage sealing plate system includes a first-stage sealing plate (sub-sealing plate 101), a second-stage sealing plate (sub-sealing plate 101), and a third-stage sealing plate (sub-sealing plate 101), and more sub-sealing plates 101 are arranged in sequence. The sealing backup mechanism is that each sub-sealing plate 101 works independently to form a multi-stage sealing structure; when a certain level of sub-sealing plate 101 fails, the next level of sub-sealing plate 101 continues to provide a sealing effect to ensure that the high-pressure gas does not leak.

[0307] Specifically, in the initial stage of the test, the multi-stage sealing plate system is installed in the sealing groove of the rotary engine to ensure that each sealing plate is correctly in place. The test equipment is adjusted to simulate the operating environment of the engine under high pressure (1200psi) and high temperature (200℃) conditions. Next, the rotary engine is started, the pressure and temperature are gradually increased to the preset values, and the contact pressure, displacement and gas leakage between the radial sealing plate 1 and the rotor surface are monitored in real time using a high-precision sensor. Specifically, the first-stage sealing plate is tested first, and the high-pressure gas enters from one side of the radial sealing plate 1 and first acts on the first-stage sub-sealing plate 101. The result is that the sub-sealing plate 101 is in close contact with the rotor surface, the sealing effect is good, the sealing is completed, and the high-pressure gas leakage is prevented. Specifically, the backup sealing plate is then tested, the failure of the sub-sealing plate 101 is artificially simulated, and the high-pressure gas is observed to enter the next-level sealing plate area (sub-sealing plate 101) through the gap. The high-pressure gas acts on the sub-sealing plate 101, and the sub-sealing plate 101 has a good sealing effect, and the sealing is completed to prevent the leakage of high-pressure gas. Continuously, the failure of more sealing sheets is simulated step by step, and the high-pressure gas is observed to pass through each stage of the sub-sealing sheet 101 in sequence until a sealing sheet with good sealing effect (such as the sub-sealing sheet 101) is encountered.

[0308] Test verification: The primary sealing test shows that the sub-sealing piece 101 is in close contact with the rotor surface under high pressure (1200psi) and high temperature (200℃), initially completing the seal without gas leakage. The backup sealing effect test shows that in the event of failure of the sub-sealing piece 101, high-pressure gas enters the sub-sealing piece 101 area through the gap. And the sub-sealing piece 101 effectively seals the high-pressure gas to prevent leakage. The step-by-step sealing test shows that even if the sub-sealing piece 101 and the sub-sealing piece 101 both fail, and the high-pressure gas enters the sub-sealing piece 101 area through the gap, the sub-sealing piece 101 can still effectively complete the seal and prevent the leakage of high-pressure gas.

[0309] Conclusion: The multi-stage sealing plate system can achieve effective sealing. Each stage of the sealing plate in the multi-stage sealing plate system serves as a backup for each other. Even if a sealing plate at one stage fails, the sealing plate at the next stage can continue to provide effective sealing to ensure that high-pressure gas does not leak. The multi-stage sealing design ensures that even if some sealing plates fail, the overall sealing effect can still be maintained, significantly improving the durability and stability of the sealing system.

[0310] Example 22 Sealing effect of the multi-stage sealing sheet system when the sub-sealing sheet 101 is damaged

[0311] In a specific embodiment, under high load conditions, the continuous movement of the rotor and the high-pressure gas exert pressure on the sealing plate; and the high-performance rotary engine simulates high pressure (1200psi) and high temperature (200°C) conditions. The multi-stage sealing plate system includes a first-stage sealing plate (sub-sealing plate 101), a second-stage sealing plate (sub-sealing plate 101), and a third-stage sealing plate (sub-sealing plate 101), and a larger number of sub-sealing plates 101 are set in sequence. The sealing backup mechanism is that each sub-sealing plate 101 works independently to form a multi-stage sealing structure; when a certain level of sub-sealing plate 101 fails, the next level of sub-sealing plate 101 continues to provide a sealing effect to ensure that the high-pressure gas does not leak.

[0312] Specifically, at the initial stage of the test, the multi-stage sub-sealing plate 101 system is installed in the sealing groove of the rotary engine to ensure that each sealing plate is correctly positioned. The test equipment is adjusted to simulate the operating environment of the engine under high pressure (1200psi) and high temperature (200°C). Next, the rotary engine is started, and the pressure and temperature are gradually increased to the preset values. A high-precision sensor is used to monitor the contact pressure, displacement and gas leakage between the radial sealing plate 1 and the rotor surface in real time.

[0313] Specifically, the high-pressure gas enters from one side of the radial sealing sheet 1 and first acts on the sub-sealing sheet 101 at the edge. The sub-sealing sheet 101 completes partial sealing and prevents part of the high-pressure gas from leaking; and the remaining high-pressure gas enters the area of ​​the next-level sub-sealing sheet 101 through the gap. The sub-sealing sheet 101 has been simulated for damage treatment. Since one of the sub-sealing sheets 101 is damaged and has no sealing effect, the high-pressure gas continues to enter the area of ​​the next-level sub-sealing sheet 101. The sub-sealing sheet 101 is in close contact with the rotor surface, and the sealing effect is good, which prevents further leakage of the high-pressure gas and completes the sealing.

[0314] Test verification: In the primary seal, the sub-sealing piece 101 contacts the rotor surface under high pressure (1200psi) and high temperature (200℃) conditions, completing partial sealing and preventing some high-pressure gas from leaking. In the damage treatment, due to the damage of the sub-sealing piece 101, the high-pressure gas enters the sub-sealing piece 101 area through the gap, and has no sealing effect. In the backup seal, the sub-sealing piece 101 contacts the rotor surface under high pressure (1200psi) and high temperature (200℃) conditions, and has a good sealing effect, preventing further leakage of high-pressure gas.

[0315] Conclusion: The multi-stage sealing sheet system can continuously provide a stable and effective sealing effect under high pressure (1200psi) and high temperature (200℃) conditions. Each level of sub-sealing sheets 101 in the multi-stage sealing sheet system is a backup for each other. Even if a sub-sealing sheet 101 of a certain level fails, the sub-sealing sheet 101 of the next level can still continue to provide effective sealing to ensure that the high-pressure gas does not leak.

[0316] Example 23 Multi-stage sealing sheet system for debris handling

[0317] In a specific embodiment, during the long-term operation of the rotary engine, the radial sealing sheet 1 is in constant contact and friction with the rotor surface, generating wear debris; due to the high temperature and high pressure environment, the material of the radial sealing sheet 1 will also age and fatigue, causing small pieces of material to fall off and form material debris; even in the actual working conditions of the rotary engine, debris is formed due to external pollutants entering the sealing system. The debris will get stuck between the radial sealing sheet 1 and the rotor surface, resulting in a loose seal and causing gas leakage. In fact, the debris circulates in the sealing system, directly exacerbating the wear of the radial sealing sheet 1 and the rotor surface, shortening the service life of the sealing system.

[0318] Under high-load conditions, the continuous movement of the rotor and the high-pressure gas exert pressure on the radial sealing sheet 1, causing wear and debris. Specifically, when the rotary engine is running for a long time, since each stage of the sub-sealing sheet 101 in the multi-stage sealing sheet can work independently, there is a certain space between each sub-sealing sheet 101, and these spaces can accommodate debris. The gaps between the multiple sub-sealing sheets 101 provide space to accommodate debris, preventing the debris from directly affecting the contact between the radial sealing sheet 1 and the rotor surface. At this time, the debris will be deposited in the gaps between the multiple sub-sealing sheets 101, preventing the debris from entering the critical sealing area. The gaps and accommodating space can prevent excessive accumulation of debris in a certain location, avoiding excessive local pressure or increased wear.

[0319] Specifically, when the rotary engine is running for a long time, the spring sheet group has good elasticity and dynamic adaptability, and can adjust the position and pressure of the radial sealing sheet 1 in real time during the movement of the rotor to ensure that the radial sealing sheet 1 is in close contact with the rotor surface. During the dynamic adjustment of the spring sheet group, some debris will be discharged from the sealing area, reducing the impact of the debris on the sealing performance. This is because through the vibration and pressure changes when the rotary engine is running, some debris can be automatically discharged from the sealing area.

[0320] Specifically, the multi-stage sub-sealing sheet 101 helps the debris to be discharged from the sealing system. The side wall surface of the groove on the multi-stage sub-sealing sheet 101 can be used to accommodate and discharge the debris, and as a temporary storage space, it can accommodate and discharge the debris generated during operation. Channels or holes are set in the sealing system, and the debris is guided into the channel holes by gravity or fluid dynamics, and discharged from the sealing system through these channel holes. The inclined contact surface of the multi-stage sub-sealing sheet 101 guides the debris to move under the action of gravity or centrifugal force to prevent it from accumulating between the radial sealing sheet 1 and the rotor surface.

[0321] Test verification: The multi-stage sub-sealing sheet 101 design effectively accommodates and handles debris in the system through a unique structure and dynamic adaptation mechanism to prevent it from seriously affecting the sealing performance. By designing gaps between multiple sub-sealing sheets 101 to accommodate debris, the elastic deformation and dynamic adjustment of the spring sheet group ensure that the radial sealing sheet 1 continues to be in close contact with the rotor surface.

[0322] Comprehensively, such as Figure 1As shown, the overall schematic diagram of the radial sealing structure shows the various positions, mutual connection relationships, connection methods and matching relationships in the radial sealing structure of a rotary engine described in the present invention. Specifically, the radial sealing sheet 1 is a multi-layer comb-tooth structure with an arc-shaped contact surface, which is located at the top of the radial sealing structure. The radial sealing sheet 1 is fixed in the trapezoidal groove 2. The pressure applied by the spring structure allows the rotor to maintain close contact when rotating, providing effective sealing. Specifically, the trapezoidal groove 2 is located below the radial sealing sheet 1, forming a fixed position in the radial sealing sheet 1. The depth of the trapezoidal groove 2 is half of the depth of the radial sealing sheet 1 and the angles of the two are consistent, which can fix the radial sealing sheet 1 and the spring group 3, so that the radial sealing sheet 1 can be stably embedded in the trapezoidal groove 2 to prevent the radial sealing sheet 1 from moving or falling off during the operation of the rotor. Specifically, the structure of the spring group is an integrated processing structure, located in the trapezoidal groove 2, below the radial sealing sheet 1, and the structure of the spring group 3 directly supports the radial sealing sheet 1. Through the elastic force of the spring sheet 3 and the reverse spring sheet 4, it is ensured that the radial sealing sheet 1 is always in close contact with the outer surface of the rotor, reducing errors and failures in the split structure and providing continuous sealing pressure. Specifically, the rotor is located on the inner side of the radial sealing sheet 1 and is the core moving part of the sealing system; the rotor rotates in the combustion chamber, driving the rotor engine to work, and the surface of the rotor maintains direct contact with the radial sealing sheet 1, and maintains close contact with the outer surface of the rotor 4 through the arc and multi-layer structure of the radial sealing sheet 1, achieving effective sealing and lubrication.

[0323] Furthermore, the radial sealing sheet 1 is closely matched with the inner wall of the trapezoidal groove 2 through the shape of its bottom. The trapezoidal groove 2 enables the radial sealing sheet 1 to be stably fixed to prevent the radial sealing sheet 1 from being displaced during operation; the bottom of the radial sealing sheet 1 and the inner wall of the trapezoidal groove 2 are trapezoidal, which ensures that the radial sealing sheet 1 can be stably maintained in the trapezoidal groove 2 when subjected to the pressure of the spring structure. Specifically, the spring group (spring sheet 3 and reverse spring sheet 4) supports the radial sealing sheet 1 through its elasticity, so that the radial sealing sheet 1 can always maintain contact with the rotor during the movement of the rotor; the elastic force provided by the spring group (spring sheet 3 and reverse spring sheet 4) ensures that the radial sealing sheet 1 can be tightly attached to the rotor surface under different working conditions to achieve effective sealing; further, the spring group (spring sheet 3 and reverse spring sheet 4) enables the radial sealing sheet 1 to be fine-tuned under dynamic conditions to adapt to the slight displacement of the rotor. Specifically, the radial sealing sheet 1 directly contacts the outer surface of the rotor, and the arc shape enables the radial sealing sheet 1 to adapt to the arc surface of the rotor, provide uniform contact pressure, reduce local stress concentration, and prevent leakage; furthermore, the multi-layer comb-tooth structure further enhances the sealing effect and increases the contact area between the radial sealing sheet 1 and the rotor.

[0324] Furthermore, the contact surface between the radial sealing piece 1 and the rotor is a multi-layer comb-tooth sealing structure with an arc shape, and the sharp corners of the comb-tooth structure of the radial sealing piece 1 are chamfered. Specifically, the sharp corners of the radial sealing piece 1 are prone to concentrate stress during the contact process, resulting in excessive local stress on the side wall of the trapezoidal groove 2, scratches and wear. The chamfering treatment changes the sharp corners into a smooth curved surface, disperses stress, and reduces damage. During the manufacturing process of the comb-tooth structure of the radial sealing piece 1, all sharp corners are chamfered so that it is not easy to scratch the surface when it contacts the side wall of the trapezoidal groove 2 during installation and operation, and maintains the integrity and smoothness of the side wall of the groove. Specifically, the contact between the sharp corners of the radial sealing piece 1 and the side wall of the trapezoidal groove 2 will cause aggravated wear, especially in high-speed movement and high-temperature environments, the wear will be faster. The chamfering treatment reduces the contact stress and friction coefficient, thereby reducing wear. During operation, the radial sealing sheet 1 after the rounding treatment has less friction and slower wear when in contact with the side wall of the trapezoidal groove 2, which significantly extends the service life of the radial sealing sheet 1 and the trapezoidal groove 2, thereby improving the reliability and durability of the entire sealing system and the rotary engine. Specifically, the sharp corners of the radial sealing sheet 1 will cause excessive local contact stress, resulting in deformation or damage of the sealing sheet, affecting the sealing effect. The rounding treatment makes the contact between the sealing sheet and the side wall of the trapezoidal groove 2 more uniform and smooth, reduces local stress, and maintains the integrity of the sealing sheet. Under the action of high-pressure gas and spring sheet preload, the sealing sheet after the rounding treatment maintains uniform contact with the side wall of the trapezoidal groove 2, ensuring that the sealing sheet is not deformed or damaged, thereby maintaining good sealing performance and preventing gas leakage. Specifically, the sharp corners of the radial sealing sheet 1 will hinder the flow of lubricating oil, causing uneven lubrication, and increasing friction and wear. The rounding treatment makes the contact surface smoother, which is conducive to the uniform distribution and flow of lubricating oil between the radial sealing sheet 1 and the side wall of the trapezoidal groove 2, forming an effective lubricating film. The radial sealing sheet 1 after the rounding treatment forms a uniform lubricating film with the side wall of the trapezoidal groove 2 under the action of lubricating oil, which helps the distribution and flow of lubricating oil, reduces the friction coefficient, reduces wear, improves the lubrication effect, and ensures the stable operation of the sealing system under high temperature and high pressure conditions. Specifically, due to the sharp corners of the radial sealing sheet 1, stress concentration is prone to occur, resulting in local stress much higher than other parts, which is easy to cause material fatigue and cracking. The rounding treatment eliminates the stress concentration phenomenon at the sharp corners and reduces the local stress; furthermore, the rounding treatment improves the contact state between the radial sealing sheet 1 and the side wall of the trapezoidal groove 2, making the contact area more uniform, the contact stress distribution more reasonable, reducing the local high stress area, and improving the sealing effect.

[0325] Furthermore, the cross-sectional shape of the trapezoidal groove 2 is a trapezoid, consisting of inclined surfaces on both sides and a bottom plane; the trapezoidal structure ensures that the trapezoidal groove 2 can accommodate the radial sealing sheet 1 and provide stable support. The angle of the trapezoidal groove 2 corresponds to the radial sealing sheet 1, and the angles of the inclined surfaces on both sides of the trapezoidal groove 2 match the side angles of the radial sealing sheet 1; the matching angles ensure that the radial sealing sheet 1 can be tightly embedded in the groove 2 without offset or looseness. The depth of the trapezoidal groove 2 is designed to be half the thickness of the radial sealing sheet 1, so that part of the radial sealing sheet 1 is embedded in the groove, and the other part remains free to move, which is convenient for elastic deformation and dynamic adjustment. Specifically, the trapezoidal groove 2 provides a stable accommodation space, so that the radial sealing sheet 1 can remain stable after installation and will not shift due to movement or vibration; the trapezoidal groove 2 provides a mechanical locking effect through its geometric shape to prevent the radial sealing sheet 1 from falling off or moving during use. Specifically, the matching angle of the trapezoidal groove 2 ensures that the radial sealing sheet 1 is in close contact with the side wall of the trapezoidal groove 2, forming an effective sealing interface and reducing air leakage; by making the angle of the trapezoidal groove 2 consistent with the radial sealing sheet 1, the contact area is increased, the sealing effect is improved, and the pressure distribution is more uniform. Specifically, the depth of the trapezoidal groove 2 is half the thickness of the radial sealing sheet 1, so that a part of the radial sealing sheet 1 can be freely stretched or compressed, which is convenient for dynamically adapting to the movement and temperature changes of the rotor during the operation of the rotary engine; thereby ensuring that the radial sealing sheet 1 can be partially embedded in the trapezoidal groove 2 under the action of high-pressure gas to form a stable base, while allowing its free part to be dynamically adjusted under the action of high pressure and elastic force to maintain close contact with the rotor.

[0326] In addition, the disclosed embodiments of the present invention also provide a rotary engine, including the rotary engine radial sealing structure provided in all embodiments of the present invention. Specifically, a rotary engine includes a radial sealing device, a cylinder, a transmission gear, a transmission shaft (eccentric shaft) and an oil supply system; the radial sealing device includes a radial sealing sheet 1, a sealing sheet side plate 102, a spring sheet 3 and a reverse spring sheet 4; the cylinder and the rotary engine end cover form a sealed cavity; the transmission gear connects the rotor and the transmission shaft (eccentric shaft) for transmitting power; the transmission shaft (eccentric shaft) transmits the rotor power through the transmission gear; the oil supply system includes a fuel supply system and a lubricating oil supply system to provide fuel and lubricating oil for the rotary engine.

[0327] In addition, the working principle of the rotary engine is: the cylinder and the engine end cover form a sealed cavity, and the fuel is burned in the cavity to drive the rotor to rotate, and then the sealed cavity ensures that the high-pressure gas in the combustion process will not leak, drive the rotor to move, and realize power output; then the rotor movement is converted into mechanical energy output through the transmission gear and the transmission shaft (eccentric shaft), and the transmission gear and the transmission shaft (eccentric shaft) transmit the rotational motion of the rotor to the external mechanical system to realize power transmission; the inside of the cylinder is divided into three working chambers, and the volumes of these three working chambers change continuously during the movement of the rotor; the four processes of intake, compression, combustion and exhaust are completed successively in the cycloid cylinder body, and each process is carried out at a different position in the cylinder body; at the same time, the fuel supply system includes a fuel supply system and a lubricating oil supply system, which provide fuel and lubricating oil to the rotary engine respectively; the fuel supply system provides the fuel required for combustion, and the lubricating oil supply system provides lubrication for the moving parts of the engine, reduces friction and wear, and extends service life.

[0328] In addition, the working of the rotary engine goes through four strokes: intake, compression, combustion, and exhaust. The specific working cycle is as follows: In the intake stage, the movement of the rotor increases the volume of a working chamber in the cylinder, the intake valve opens, and fresh air is sucked into the working chamber; fresh air enters the working chamber to provide oxygen for the combustion process. In the compression stage, as the rotor continues to move, the volume of the working chamber gradually decreases, the intake valve closes, and the air is compressed; compressed air increases its temperature and pressure to prepare for the combustion process. In the combustion stage, the fuel is sprayed into the compressed working chamber through the fuel supply system, mixed with the high-temperature and high-pressure air and burned to produce high-temperature and high-pressure gas; the high-temperature and high-pressure gas produced by combustion drives the rotor to rotate, converting chemical energy into mechanical energy. In the exhaust stage, the volume of the working chamber increases again, the exhaust valve opens, and the exhaust gas is discharged from the working chamber; and then the exhaust gas produced by combustion is discharged to prepare for the next working cycle.

[0329] In addition, the fuel supply system consists of a fuel pump and a fuel injector, which provide the rotary engine with the fuel required for combustion; the fuel pump delivers the fuel from the fuel tank to the fuel injector; during the compression stage, the fuel injector sprays the fuel into the working chamber at a predetermined time and pressure, and mixes with the compressed air for combustion.

[0330] In addition, the lubricating oil supply system consists of a lubricating oil pump and a lubricating oil channel, which provides lubrication for the moving parts of the rotary engine to reduce friction and wear; the lubricating oil pump transports the lubricating oil from the oil tank to the moving parts of the engine; the lubricating oil passes through the preset lubricating oil channel and is evenly distributed to various parts that need lubrication, forming an oil film to reduce friction.

[0331] In comparison, the four strokes of a reciprocating engine, namely intake, compression, combustion and exhaust, are all carried out in the same cylinder, and the specific working cycle is as follows: in the intake stage, the piston moves downward in the cylinder, the intake valve opens, and air or mixed gas is sucked into the cylinder; in the compression stage, the piston moves upward, the intake valve closes, and the air or mixed gas is compressed; in the combustion stage, at the end of compression, the spark plug ignites or the fuel injection ignites the mixed gas, generating high-temperature and high-pressure gas that pushes the piston downward; in the exhaust stage, the piston moves upward again, the exhaust valve opens, and the exhaust gas is discharged from the cylinder.

[0332] In comparison, each process of the rotary engine is carried out at a different position of the cycloid cylinder, forming a continuous cycle process; while all processes of the reciprocating engine are carried out in the same cylinder, and each process is completed in sequence.

[0333] In comparison, a rotary engine completes each working process through the rotational motion of the rotor; a reciprocating engine completes each working process through the reciprocating linear motion of the piston.

[0334] Although the present invention has been described in detail above by means of general description, specific implementation methods and tests, it is obvious to those skilled in the art that some modifications or improvements may be made to the present invention. Therefore, these modifications or improvements made without departing from the spirit of the present invention all fall within the scope of protection claimed by the present invention.

Claims

1. A radial sealing structure of a rotary engine, the rotary engine comprising a rotor and a stator, the stator comprising three arc-shaped side walls, characterized in that: A trapezoidal groove (2) is provided at the junction of each two arc-shaped side walls of the stator; The radial sealing structure comprises a radial sealing sheet (1) and a spring assembly; The radial sealing sheet (1) comprises a sub-sealing sheet (101), a sealing sheet side plate (102), and a high-pressure gas guide groove (103); The spring assembly consists of a spring sheet (3) and a reverse spring sheet (4); The radial sealing sheet (1) is installed in the trapezoidal groove (2), and the two side surfaces of the radial sealing sheet (4) are closely attached to the two side walls of the trapezoidal groove (2); the upper and lower parts of the radial sealing sheet (1) are fixed in the trapezoidal groove (2) by mechanical fasteners, thereby preventing the radial sealing sheet (1) from shifting; the bottom of the radial sealing sheet (4) is connected to the spring sheet (3) and the reverse spring sheet (4) by means of a mounting groove or a mounting hole, the spring sheet (3) provides an upward elastic force, and the reverse spring sheet (4) provides a reverse supporting force, thereby ensuring that the radial sealing sheet (4) maintains close contact with the rotor surface at different operating positions; The sealing sheet side plates (102) are mounted on both sides of each radial sealing sheet (1), and each radial sealing sheet (1) comprises two sealing sheet side plates (102); the sealing sheet side plates (102) are mounted on both sides of the radial sealing sheet (1) by mechanical fasteners to ensure that they will not shift during operation; The high-pressure gas guide grooves (103) are evenly distributed on both sides of the sealing plate side plate (102); the high-pressure gas guide grooves (103) guide the high-pressure gas entering the bottom of the radial sealing plate (1) to enter the position where the spring plate (3) and the reverse spring plate (4) are located through the bottom, providing additional buoyancy, and assisting the elastic force of the spring plate (3) and the reverse spring plate (4) to make the radial sealing plate (1) in close contact with the rotor surface, thereby evenly distributing the gas pressure of the sealing system; the high-pressure gas passes through the high-pressure gas guide grooves (103), enters the groove from the outside of the sealing plate side plate (102), and enters the bottom area of ​​the radial sealing plate (1) along the groove.

2. A radial sealing structure for a rotary engine according to claim 1, characterized in that: The trapezoidal groove (2) is composed of a sealing groove (201) and a mounting base plate (202); the radial sealing sheet (1) is inserted into the trapezoidal groove (2) of the stator through its side surface, and the two side surfaces of the radial sealing sheet (1) match the two side surfaces of the trapezoidal groove (2); the cross section of the trapezoidal groove (2) is trapezoidal, and the angle between the inclined surface of the trapezoidal groove (2) and the horizontal plane of the groove bottom always corresponds to and remains consistent with the side surface of the radial sealing sheet (1); the pressure of the high-pressure gas in the trapezoidal groove (2) is evenly distributed, and the high-pressure gas is guided into the bottom of the radial sealing sheet (1) through the high-pressure gas guide groove (103) on the sealing sheet side plate (102), thereby increasing the buoyancy of the radial sealing sheet (1); the trapezoidal groove (2) uses a fastening device to confine the radial sealing sheet (1) between the upper and lower parts of the trapezoidal groove (2), thereby ensuring that it is not displaced due to rotor rotation or external vibration during operation.

3. The radial sealing structure of a rotary engine according to claim 1, characterized in that: The radial sealing sheet (1) is composed of a plurality of sub-sealing sheets (101) arranged in parallel to form a group and facing one side of the cavity, forming a multi-stage sub-sealing sheet (101) structure with a flat bottom and an outwardly curved top; the multi-stage sub-sealing sheet (101) contacts the rotor surface through the curved portion at the top to form a plurality of sealed cavities to prevent gas or liquid leakage; the multi-stage sub-sealing sheet (101) is fixed in the trapezoidal groove (2) by a spring clip or an embedded fixing device to transmit pressure and wear force from the rotor surface, and the multi-stage sub-sealing sheet (101) can move slightly during operation to adapt to the rotation and temperature changes of the rotor; the edge shape of the radial sealing sheet (1) is concave or convex to ensure a close fit with the rotor operation.

4. The radial sealing structure of a rotary engine according to claim 1, characterized in that: The spring sheet (3) is composed of a plurality of sub-spring sheets (301) and spring sheet support legs (302), and the sub-spring sheets (301) are arranged evenly; the spring sheet (3) is located in the installation groove at the bottom of the radial sealing sheet (1), directly contacts the bottom surface of the radial sealing sheet (1), and a spring sheet (3) is usually installed at the bottom of each radial sealing sheet (1); the spring sheet (3) is fixed in the trapezoidal groove (2) at the bottom of the radial sealing sheet (1) through its support legs (302), one end of the spring sheet is fixed to the bottom of the trapezoidal groove (2) through an embedded fixing device, and the other end is tightly connected to the radial sealing sheet (1) through compression installation; The reverse spring sheet (4) is composed of a plurality of sub-reverse spring sheets (401) and reverse spring sheet support feet (402), and the sub-reverse spring sheets (401) are arranged evenly; the reverse spring sheet (4) is located in the bottom of the trapezoidal groove (2) of the radial sealing sheet 1, and each radial sealing sheet (1) is usually equipped with a reverse spring sheet (4); the reverse spring sheet (4) is fixed in the trapezoidal groove (2) at the bottom of the radial sealing sheet (1) through its support feet (402), one end of the reverse spring sheet (4) is fixed to the bottom of the trapezoidal groove (2) of the radial sealing sheet through an embedded fixing device, and the other end is tightly connected to the radial sealing sheet (1) through compression installation; the reverse spring sheet (4) is located below or beside the spring sheet (3), provides a reverse support force, and transmits it to the bottom of the radial sealing sheet (1); the reverse spring sheet (4) and the spring sheet (3) jointly provide a dynamic adjustment capability to compensate for slight changes of the radial sealing sheet (1) under different operating conditions and adapt to gap changes through elastic deformation.

5. The radial sealing structure of a rotary engine according to claim 2, characterized in that: The sealing groove (201) is located at the junction of every two arc-shaped side walls of the stator mechanism, and is integrated with the mounting base plate (202). The mounting base plate (202) fixes the sealing groove (201) as a whole on the stator, and utilizes the larger area of ​​the mounting base plate (202) to evenly distribute the pressure on the stator, thereby forming a sealing structure inside the stator; the sealing groove (201) is trapezoidal in shape as a whole, with a flat bottom and inclined surfaces on both sides, with an angle of 85±5 degrees; the side surfaces of the radial sealing sheet (1) are inserted into the inclined surfaces on both sides of the sealing groove (201), and a fixing device such as screws or buckles is used to fix the sealing groove (201) at the upper and lower parts. The radial sealing sheet (1) is fixed to ensure that the radial sealing sheet (1) is firmly positioned in the sealing groove (201) and will not be displaced due to the rotation of the rotor or external vibration; the bottom of the sealing groove (201) is a plane for mounting and fixing the spring sheet (3) and the reverse spring sheet (4); the spring sheet (3) and the reverse spring sheet (4) are fixed to the bottom of the sealing groove (201) using an embedded fixing device; the spring sheet (3) and the reverse spring sheet (4) can effectively transmit elastic force, provide an initial preload force and a reverse support force between the radial sealing sheet (1) and the rotor surface, and ensure close contact between the radial sealing sheet (1) and the rotor surface; The mounting base plate (202) is located at the bottom of the sealing groove (201) and is used to fix the entire trapezoidal groove (2) on the stator; the base plate (202) directly supports the sealing groove (201), and the mounting base plate (202) and the sealing groove (201) are fixed together by a mechanical fastening device; the mounting base plate (202) disperses the force from the sealing groove (201) to the stator.

6. The radial sealing structure of a rotary engine according to claim 2, characterized in that: The trapezoidal groove (2) is integrally formed with the arc-shaped side wall of the stator and is directly machined or cast from the arc-shaped side wall of the stator; the depth of the trapezoidal groove (2) is half of the radial sealing sheet (1); and the angle of the inclined surface of the trapezoidal groove (2) is 85±5 degrees.

7. The radial sealing structure of a rotary engine according to claim 3, characterized in that: The top of the sub-sealing sheet (101) has a curvature with a radius of 9 mm, and the number of the sub-sealing sheets (101) is 5 to 12 groups; The sealing sheet side plate (102) is provided with a groove, and the high-pressure gas passes through the groove, and the high-pressure gas is guided to the bottom of the radial sealing sheet 1 to provide additional buoyancy; the thickness of the sealing sheet side plate (102) gradually decreases from the bottom to the top; the thinner portion at the top of the sealing sheet side plate (102) can be elastically deformed under the action of the high-pressure gas; the thicker portion at the bottom of the sealing sheet side plate (102) is fixed in the trapezoidal groove (2) of the stator to provide a fixed support force; The high-pressure gas guide grooves (103) are evenly distributed on the sealing sheet side plates (102), and each sealing sheet side plate (102) is provided with four high-pressure gas guide grooves (103), for a total of eight high-pressure gas guide grooves (103).

8. The radial sealing structure of a rotary engine according to claim 4, characterized in that: The sub-spring sheet (301) is located in the middle part of the spring sheet (3), which is the main supporting part of the arch structure; the two ends of the sub-spring sheet (301) are fixedly connected to the spring sheet support feet (302), and the sub-spring sheet (301) and the spring sheet support feet (302) are firmly connected by welding; the sub-spring sheet (301) is in contact with the bottom (201) of the trapezoidal sealing groove; the sub-spring sheet (301) pushes the radial sealing sheet (1) upwards by elastic force, so that it is in close contact with the rotor surface; the pre-tightening force of the sub-spring sheet (301) ensures that the radial sealing sheet (1) always maintains a close connection with the rotor surface during operation, thereby preventing gas leakage; The spring sheet support foot (302) is the end structure of the spring sheet (3); the spring sheet support foot (302) is connected to the two ends of the sub-spring sheet (301), and is located at one end on each side; the spring sheet support foot (302) contacts the two ends of the radial sealing sheet (1), and various parts of the spring sheet (3) are fixed to the radial sealing sheet (1) and the bottom (201) of the trapezoidal sealing groove by a mechanical fixing device; the contact area of ​​the spring sheet support foot (302) evenly transmits the elastic force of the sub-spring sheet (301) to the two ends of the radial sealing sheet (1), and the spring sheet support foot (302) fixes and supports the entire spring sheet (3) structure so that it does not shift or deform under a high-pressure environment.

9. The radial sealing structure of a rotary engine according to claim 4, characterized in that: The sub-reverse spring sheet (401) is located in the middle part of the reverse spring sheet (4) and has an arched structure; both ends of the sub-reverse spring sheet (401) are firmly connected to the reverse spring sheet support feet 402 by welding; the sub-reverse spring sheet (401) transmits the pre-tightening force to the radial sealing sheet (1) through its arched elastic force so that the radial sealing sheet (1) maintains close contact with the rotor surface; the pre-tightening force provided by the sub-reverse spring sheet (401) ensures that the radial sealing sheet (1) always fits the rotor surface during operation to prevent air leakage; The reverse spring sheet support feet (402) are located at both ends of the reverse spring sheet (4); the reverse spring sheet support feet (402) are connected to both ends of the sub-reverse spring sheet (401), and are respectively located on the left and right sides of the reverse spring sheet (401); the reverse spring sheet support feet (402) are in contact with the bottom of the radial sealing sheet (1), and a mechanical fixing device is used to fix the reverse spring sheet (4) in the bottom mounting groove or mounting hole of the radial sealing sheet (1); the reverse spring sheet support feet (402) transmit the elastic force of the sub-reverse spring sheet (401) to the bottom of the radial sealing sheet (1) evenly through its contact area, and the reverse spring sheet support feet (402) support the reverse spring sheet (4) to avoid displacement or deformation under high pressure environment.

10. A radial sealing structure of a rotary engine according to claim 8 or 9, characterized in that: The sub-spring sheets (301) are components of the spring sheet (3), and there are four of them in total, which are arranged in parallel with each other; the interval between each sub-spring sheet (301) is 0.41 mm; each sub-spring sheet (301) presents an arched structure with a curvature of a radius of 60 mm; The sub-reverse spring sheet (401) is a component of the reverse spring sheet (4), and there are three sheets in total, which are arranged in parallel with each other; the interval between each sub-reverse spring sheet (401) is 0.41 mm; each sub-reverse spring sheet (401) presents an arched structure with a radius of curvature of 60 mm.

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