Rotor engine sealing test detection system

Abstract

The invention belongs to the technical field of engine testing, and particularly relates to a rotor engine sealing test detection system which comprises an engine body, a sealing fin test module and a driving module. The engine body comprises a cylinder body, a rotor and an end cover, a combustion chamber is arranged in the cylinder body, a mounting port is formed in the cylinder body, and the mounting port is used for detachably mounting the sealing fin test module; the driving module is used for driving the engine body to operate; the sealing piece test module comprises a mounting groove seat, a pressure sensor and a displacement sensor, the mounting groove seat comprises a seat body, a mounting groove is formed in the side face of one side of the seat body, and the mounting groove is used for mounting a radial sealing piece and a spring; a cavity is formed in the base body, the mounting groove and the cavity are separated through a blocking wall, a first through hole communicating the mounting groove and the cavity is formed in the blocking wall, and an ejector rod is slidably connected into the first through hole; the pressure sensor is installed in the cavity, and the ejector rod abuts against the pressure sensor. The problem of efficient testing of the sealing performance of the rotor engine is solved.

Description

Technical Field

[0001] The invention belongs to the technical field of engine testing, and in particular relates to a rotary engine sealing test detection system. Background Art

[0002] With the advancement of engine technology, the demand for higher power density is growing. The high power density of rotary engines makes them a popular choice for new energy range-extended power generation devices and the primary power source for small drones. Compared to triangular rotor engines, cycloidal rotor engines swap the rotor and cylinder. Their advantages include higher power density, a higher compression ratio, easier compression ratio adjustment, easier lubrication, and more uniform heating of the engine as a whole. The core of the cycloidal rotor engine is sealing and friction. Its radial seal and end face seal are the core of ensuring the cylinder pressure of the rotary engine's combustion chamber. Better sealing can improve fuel utilization, increase power, provide a better combustion environment, and be more emission-friendly.

[0003] After the entire engine is installed, it is difficult to determine whether its seals and various internal parts are working properly, so a visual rotary engine test bench is needed to observe the various components of the rotary engine during operation. For sealing problems, the leakage location is not easy to determine, so a device that can detect leakage is needed to locate the leakage location of the rotary engine and provide guidance for mechanical design and processing technology. The radial seal is the core to ensure that there is no gas blowby between the combustion chambers. Whether it works normally during operation or whether it fails under vibration cannot be detected, so a detection device is needed to monitor it. At present, there are few related technologies for testing the sealing performance of rotary engines, and the test results need to be improved. Summary of the Invention

[0004] The present invention aims to provide a rotary engine sealing test detection system to solve the problem of efficient testing of rotary engine sealing performance.

[0005] In order to achieve the above-mentioned object, the present invention provides a solution as follows: a rotary engine sealing test and detection system, comprising an engine body, a sealing piece test module and a drive module; The engine body includes a cylinder block, a rotor and an end cover. The cylinder block contains a combustion chamber and has a mounting opening for detachably mounting a sealing plate test module. A driving module, used to drive the engine to operate; Sealing piece test module, including mounting slot and pressure sensor: The mounting groove seat comprises a seat body, a mounting groove is formed on a side surface of one side of the seat body, and the mounting groove is used to install a radial sealing plate and / or a spring; a cavity is formed in the seat body, and the mounting groove and the cavity are separated by a barrier wall, and a first through hole is formed on the barrier wall to connect the mounting groove and the cavity, and a push rod is slidably connected in the first through hole; The pressure sensor is installed in the cavity, and the ejector rod is against the pressure sensor.

[0006] The working principle and beneficial effects of this solution are as follows: a drive module is used to drive the engine body, simulating the operating state of a rotary engine. Radial seals of varying widths and thicknesses and / or corresponding springs are mounted on the seal test module. The seal test module is then installed onto the engine body through mounting ports in the engine body, positioning the seals in their operating position. This solution facilitates the replacement of radial seals of varying widths and thicknesses for testing, making rotary engine sealing performance testing more efficient.

[0007] When the rotary engine is running, the rotor presses against the radial sealing plate, and the pressure sensor is subjected to pressure, which enables real-time monitoring of the stress conditions of the sealing plate and / or spring, and real-time monitoring of the stress conditions of the radial sealing plate, thereby achieving efficient testing of the sealing condition, and thus providing more effective and accurate guidance on the mechanical design and processing technology of the rotary engine and its sealing structure.

[0008] Optionally, a bracket is further included, which is installed on the side of the seat body away from the mounting groove. An adjusting bolt is provided on the side of the bracket close to the seat body, and the adjusting bolt is threadedly connected to the seat body and / or the bracket. A displacement sensor is provided on the side of the bracket away from the adjusting bolt, and the working end of the displacement sensor is against the adjusting bolt.

[0009] When the rotary engine is not running, the adjusting bolt is rotated (the adjusting bolt and the displacement sensor are in compression contact; the sensor's extension is the displacement of the adjusting bolt). This compresses the pressure sensor, which transmits force to the spring via the push rod. The spring compresses, and the force applied to the pressure sensor is the pressure applied to the spring (the spring force can also be calculated based on the displacement). This allows the spring force to be changed before the rotary engine is running. While the rotary engine is running, the adjusting bolt can also be rotated, causing the pressure sensor to displace, thereby changing the elastic deformation of the spring and, consequently, the spring force, thus changing the spring force while the rotary engine is running.

[0010] Optionally, it also includes a mounting groove seat that matches the mounting groove, a sealing plate groove for installing a mirror sealing plate is opened on the mounting groove seat, and a second through hole connected to the first through hole is opened at the bottom of the sealing plate groove; a force-bearing plate is also provided in the sealing plate groove.

[0011] The radial seal is mounted on the mounting slot, which is then installed into the mounting slot. Compared to installing the radial seal directly into the mounting slot, modular installation of the radial seal via the mounting slot makes it easier to replace radial seal slots of varying thicknesses. This is especially true with mounting slots of varying slot widths, which also allows for replacement of radial seals of varying widths. A spring is placed on one side of the load-bearing plate, while the other side of the load-bearing plate is terminated by a push rod. The push rod is connected to a pressure sensor, which is then connected to an adjustment bolt, which is then connected to a displacement sensor. This provides a more reliable structure and facilitates adjustment of the spring force.

[0012] Optionally, the push rod includes a large diameter end and a small diameter end, the radial dimension of the large diameter end is larger than the radial dimension of the small diameter end, and the large diameter end faces the pressure sensor; a sealing ring is installed on the push rod.

[0013] Enhance the air tightness of the entire experimental device, thereby improving the air tightness of the rotary engine.

[0014] Optionally, ribs are provided on both sides of the mounting groove seat, and a slide groove is provided in the mounting groove to be slidably matched with the ribs, and the ribs are slidably matched with the slide groove.

[0015] Optionally, a cylinder pressure sensor is provided on the engine body at a position corresponding to each combustion chamber; the drive module includes a drive motor, a reduction mechanism and a belt transmission mechanism, the drive motor is connected to the reduction mechanism, the belt transmission mechanism is connected to the input end of the engine body, and a torque sensor is provided on the reduction mechanism; the end cover is made of transparent material; and several temperature sensors are installed on the cylinder body.

[0016] During engine operation, the radial seals in the three removable modules are fixed in size and material, and the three removable springs are applied with the same force. This allows for measurement of overall torque and cylinder pressure. Higher cylinder pressure indicates better sealing, lower initial torque, and reduced friction. This allows for the optimal radial seal size and spring force to be determined by replacing the radial seals and adjusting the spring force. This allows for finding the optimal radial seal size and spring force for optimal friction while maintaining optimal sealing. This provides direct guidance for the design and processing of radial seals and springs for rotary engines. During engine operation, friction is generated by internal contact seals, which are measured by torque sensors. Torque measurements can also be correlated with cylinder pressure to determine the minimum initial torque at maximum cylinder pressure. Furthermore, combined with a seal test module that facilitates replacement of radial seals and adjustment of spring force, different radial seals and springs can be used to ensure consistent boundary conditions in each combustion chamber, effectively enabling the use of cylinder pressure to infer leaks in individual combustion chambers. The end cap is made of transparent material, allowing for clear observation of the internal operation of the rotary engine, such as the proper functioning of components like the end face sealing rings and radial seals, thus guiding the design of the internal structure. The addition of colored gas also facilitates the diffusion path of the gas and the observation of the sealing properties of individual combustion chambers. Temperature sensors installed on the cylinder body monitor the temperatures of the cylinder wall, combustion chamber, and end face. More importantly, they monitor the temperature of the radial seals, which generate heat during friction, thus facilitating the observation of their sealing properties.

[0017] Optionally, the drive module includes a high-pressure air pump and several high-pressure gas solenoid valves. The high-pressure gas solenoid valves are supplied with air by the high-pressure air pump. Each high-pressure gas solenoid valve supplies air to each combustion chamber of the engine body respectively. The signal of the high-pressure gas solenoid valve switch is controlled by the crankshaft angle signal.

[0018] When the crankshaft angle signal reaches the top dead center of the compression stroke, the high-pressure gas solenoid valve opens and fills the cylinder with high-pressure gas to simulate the pressure generated by engine combustion and simulate the real engine combustion pressure conditions.

[0019] Optionally, an inflation port is opened on the engine body corresponding to each combustion chamber, and a one-way valve is installed in the inflation port; it also includes an inflation system, the inflation system includes a gas cylinder and a gas heating device, the gas cylinder outlet is connected to the air inlet of the gas heating device after passing through a gas flow meter, and the gas outlet of the gas heating device is connected to the one-way valve.

[0020] After being heated to the set temperature, it is passed into the one-way valve port through the gas flowmeter. The amount of gas filled into the cylinder during this process is known through the flowmeter. The filling of gas will cause the cylinder pressure to rise. After it rises to a stable cylinder pressure, stop filling and observe the drop in cylinder pressure to know the leakage amount.

[0021] Optionally, it also includes a thermal imager, which is facing the engine body; the engine body includes an exhaust port, which is provided with a particulate matter collection device; a threaded hole is opened on the end cover at a position corresponding to the radial sealing plate, and an acoustic emission sensor is installed in the threaded hole.

[0022] Hot air is charged into the inflation system, and the overall leakage path is observed through a thermal imager. This process is connected to the outside world due to the existence of the exhaust port and the intake port, and the rotor needs to rotate. When it rotates to the compression stroke, the intake and exhaust are closed, and the compression stroke cylinder is inflated to observe the leakage process and path. Experiments are carried out cylinder by cylinder, which plays a guiding role in the mechanical design and processing technology of the rotary engine.

[0023] Optionally, the cavity remains open on both sides of the rotor engine end cover; it also includes an end-to-end sealing compensation mechanism, which includes a boosting sleeve and a special-shaped sealing piece. The boosting sleeve is open at one end and closed at the other end. The opening size of the boosting sleeve is larger than the size of the pressure sensor. A threaded hole is provided on the closed end of the boosting sleeve so that the boosting sleeve is threadedly connected to the adjusting bolt, and the outer surface of the boosting sleeve is frustum-shaped; a V-shaped groove is provided in the middle of the special-shaped sealing piece, which matches the outer tube of the boosting sleeve, so that when the boosting sleeve is inserted into the V-shaped groove, the special-shaped sealing piece can expand outward along the two ends of the sealing piece and the radial direction of the boosting sleeve.

[0024] After the installation slot for this experimental device is opened on the engine body, the sealing performance of the part where the end cover contacts the installation slot may be significantly reduced. To ensure the sealing performance, the two end faces of the seat body must be processed with high precision, and the installation must also be high-precision, which greatly increases the difficulty of operation. To address this, an end-to-end seal compensation mechanism is adopted. By rotating the force sleeve and inserting it into the V-shaped groove, the special-shaped sealing piece is expanded outward toward the ends and the end cover, and the force sleeve is used to apply pressure to compensate for the sealing. This greatly reduces the difficulty of processing and installing the seat body, thereby further ensuring the sealing performance and thus guaranteeing the accuracy of the test results.

[0025] Optionally, several tightening nuts are also provided on the adjusting bolt; special-shaped sealing plates are provided on both sides of the cavity opening; the special-shaped sealing plates are separated from the middle of the V-shaped groove into a left sealing plate and a right sealing plate, and the separation point between the left sealing plate and the right sealing plate is serrated; and wings are also provided on both sides of the special-shaped sealing plate.

[0026] The two-piece, separate, contoured sealing sheet structure reduces material restrictions, allowing for greater flexibility in the selection of a wider range of metal materials, rather than being limited to elastic materials like rubber and nylon. The serrated edges also create a labyrinthine groove structure when expanded. This groove can be sealed by applying a small amount of sealant or by slightly tilting one of the left or right sealing sheets. The fins extend to the outer edge of the cavity, further enhancing the seal between the end cap and the base. This also allows for manual grinding of the contoured sealing sheet, further strengthening the seal between the end cap and the base. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 Schematic diagram of the structure of the rotary engine sealing test detection system in Example 1 of the present invention; Figure 2 Schematic diagram of the structure of the rotary engine sealing test detection system in embodiment 1 of the present invention from another perspective; Figure 3 Schematic diagram of the installation position of the acoustic emission sensor in Example 1 of the present invention; Figure 4 Schematic diagram of the structure of the inflation system in Example 1 of the present invention; Figure 5 This is a schematic structural diagram of a sealing sheet test module in Example 1 of the present invention; Figure 6 This is a schematic structural diagram of the mounting groove seat and radial sealing sheet in the first embodiment of the present invention; Figure 7 Schematic diagram of the structure of the ejector rod in the first embodiment of the present invention; Figure 8 This is a structural diagram of the end-to-end sealing compensation mechanism in the second embodiment of the present invention; Figure 9 Schematic diagram of the structure of the end-to-end sealing compensation mechanism from another perspective in the second embodiment of the present invention. DETAILED DESCRIPTION

[0028] The following is further described in detail through specific implementation methods: The symbols in the drawings of the specification include: engine body 1, end cover 101, sealing plate test module 2, seat body 201, mounting groove seat 202, barrier wall 203, pressure sensor 204, displacement sensor 205, radial sealing plate 206, spring 207, force plate 208, bracket 209, retaining edge 210, second through hole 211, push rod 212, adjusting bolt 213, annular groove 214, drive motor 3, speed reduction mechanism 301, torque Torque sensor 302, acoustic emission sensor 4, thermal imager 5, one-way valve 6, gas cylinder 7, gas heating device 8, air inlet 801, air outlet 802, gas flow meter 803, end face sealing ring 9, temperature sensor 10, high-pressure gas solenoid valve 11, cylinder pressure sensor 12, force sleeve 13, tightening nut 14, boss 15, special-shaped sealing piece 16, wing 161, V-shaped groove 162, left sealing piece 163, right sealing piece 164.

[0029] Example 1 This embodiment is basically as Figure 1 and Figure 2 As shown: Rotor engine sealing test detection system, including engine body 1, sealing piece test module 2 and drive module; The engine body 1 includes a cylinder body, a rotor and an end cover 101. There is a combustion chamber in the cylinder body. A cylinder pressure sensor 12 is provided at a position corresponding to each combustion chamber on the engine body 1. A mounting port is provided on the cylinder body for detachably installing a sealing piece test module 2. The front and rear end covers 101 are both made of transparent materials, such as wear-resistant transparent nylon or wear-resistant glass, and in this embodiment, wear-resistant glass is used.

[0030] Sealing piece test module 2, as attached Figure 5 As shown, it includes a mounting slot seat 202, a pressure sensor 204 and a displacement sensor 205: the pressure sensor 204 is installed in the cavity, and the ejector rod 212 abuts against the pressure sensor 204. The mounting slot seat 202 includes a seat body 201, a mounting slot is opened on one side of the seat body 201, and ribs 210 are provided on both sides of the mounting slot seat 202. A slide groove is provided in the mounting groove to slide with the rib 210, and the rib 210 slides with the slide groove, as shown in the attached figure. Figure 6 Different radial sealing sheets 206 can be pre-installed on different mounting groove seats 202. When replacement is required, the radial sealing sheets 206 and the mounting groove seats 202 can be replaced integrally, thereby making it easier to perform disassembly and installation operations.

[0031] The mounting groove is used to install the radial sealing sheet 206 and the spring 207; a cavity is opened in the seat body 201, and the mounting groove and the cavity are separated by a barrier wall 203. A first through hole is opened on the barrier wall 203 to connect the mounting groove and the cavity. A push rod 212 is slidably connected in the first through hole, and an annular groove 214 is opened on the push rod 212. Figure 7As shown, the annular groove 214 is used to install an O-ring to prevent combustion chamber gas from leaking from the sealing plate test module 2. It also includes a bracket 209, which is detachably mounted on the side of the base body 201 away from the mounting groove via bolts. An adjustment bolt 213 is provided on the side of the bracket 209 close to the base body 201. The adjustment bolt 213 is threadedly connected to the bracket 209. A displacement sensor 205 is provided on the side of the bracket 209 away from the adjustment bolt 213. The working end of the displacement sensor 205 abuts against the adjustment bolt 213. When the rotary engine is not running, adjusting bolt 213 is rotated (adjusting bolt 213 and displacement sensor 205 are in compression contact, and the sensor extension is the displacement of adjusting bolt 213). Adjusting bolt 213 presses against pressure sensor 204, which transmits force to spring 207 via push rod 212, compressing spring 207. At this time, the force of pressure sensor 204 is the pressure applied to spring 207 (the elastic force of spring 207 can also be calculated based on the displacement obtained by displacement sensor 205 and the parameters of spring 207). This allows the elastic force of spring 207 to be changed before the rotary engine is running. When the rotary engine is running, adjusting bolt 213 can also be rotated to cause pressure sensor 204 to displace, thereby changing the elastic deformation of spring 207 and thus the elastic force of spring 207, thus changing the elastic force of spring 207 while the rotary engine is running.

[0032] The device also includes a mounting seat 202 that matches the mounting slot. The mounting seat 202 has a sealing slot for mounting a mirrored sealing sheet. A second through-hole 211 is defined at the bottom of the sealing slot, communicating with the first through-hole. A force-bearing sheet 208 is also positioned within the sealing slot. A radial sealing sheet 206 is mounted on the mounting seat 202, which is then installed within the mounting slot. Compared to directly installing the radial sealing sheet 206 within the mounting slot, modularly mounting the radial sealing sheet 206 via the mounting seat 202 facilitates replacement of radial sealing sheet 206 seats of varying thicknesses. In particular, multiple mounting seats 202 with varying slot widths can also accommodate replacement of radial sealing sheets 206 of varying widths. A spring 207 is positioned on one side of the force-bearing sheet 208. The other side of the force-bearing sheet 208 is terminated by a push rod 212, which is then connected to a pressure sensor 204. The pressure sensor 204 is then connected to an adjustment bolt 213, which is then connected to a displacement sensor 205. The structure is more reliable and it is also easier to adjust the elastic force of the spring 207.

[0033] The driving module is used to drive the engine body 1 to operate. In this embodiment, the driving module includes a driving motor 3, a reduction mechanism 301 and a belt transmission mechanism. The driving motor 3 is connected to the reduction mechanism 301, which is a reduction gear box. The belt transmission mechanism is connected to the input end of the engine body 1, and a torque sensor 302 is provided on the reduction mechanism 301. When the engine body 1 is running, there will be friction due to the internal contact seal, so the torque sensor 302 can measure the friction force. At the same time, the torque can also be monitored in real time. The torque measurement can be matched with the cylinder pressure to obtain the minimum initial torque under the maximum cylinder pressure. Moreover, it is used in combination with the radial sealing sheet 206 that is easy to replace and the sealing sheet test module 2 that adjusts the elastic force, and different radial sealing sheets 206 and springs 207 are used to ensure that the boundary conditions of each combustion chamber are the same, so as to achieve the effect of measuring the cylinder pressure to infer whether a single combustion chamber is leaking.

[0034] In other embodiments, the drive module includes a high-pressure air pump and several high-pressure gas solenoid valves 11. The high-pressure gas solenoid valves 11 are supplied with air by the high-pressure air pump. Each high-pressure gas solenoid valve 11 supplies air to each combustion chamber of the engine body 1. The signal for opening and closing the high-pressure gas solenoid valves 11 is controlled by the crankshaft angle signal. When the crankshaft angle signal reaches top dead center of the compression stroke, the high-pressure gas solenoid valves 11 open, filling the cylinder with high-pressure gas, simulating the pressure generated by engine combustion and emulating real-world engine combustion pressure. More specifically, when the crankshaft angle signal reaches top dead center of the compression stroke (i.e., the moment an actual engine is about to ignite), the high-pressure gas solenoid valves 11 open, filling the cylinder with 3 MPa of air (the highest pressure during engine combustion), simulating the pressure generated by engine combustion. This pressurized simulation of real-world engine combustion pressure is intended to test various dynamic characteristics of the radial seal 206 at specific pressures and conduct sealing research, more accurately reflecting the dynamic performance of the radial seal 206 under actual operating conditions.

[0035] Because end cap 101 is made of a transparent material, the internal operation of the rotary engine can be clearly observed, such as whether components such as the end face sealing ring 9 and the radial sealing sheet 206 are functioning properly, which facilitates the design of the internal structure. When charging the high-pressure gas, adding a colored gas also facilitates the diffusion path of the gas and the observation of the sealing performance of each combustion chamber.

[0036] The cylinder body is provided with a plurality of temperature sensors 10. The temperature of the cylinder wall, the combustion chamber, and the end face can be monitored. More importantly, the temperature of the radial seal 206 is monitored to monitor the heat generated during the friction process, thereby facilitating the observation of the sealing condition of the radial seal 206.

[0037] The engine body 1 has an air charging port corresponding to each combustion chamber, and a one-way valve 6 is installed in the air charging port; the air charging system is also included, such as the attached Figure 4As shown, the charging system includes a gas cylinder 7 and a gas heating device 8. The heating device uses an electrothermal ceramic structure to heat the gas. The outlet of the gas cylinder 7 is connected to the gas inlet 801 of the gas heating device 8 after passing through a gas flowmeter 803. The gas outlet 802 of the gas heating device 8 is connected to a check valve 6. A thermal imager 5 is also included, facing the engine body 1. After heating to a set temperature, the gas is passed through the gas flowmeter 803 and into the check valve 6. The amount of gas filled into the cylinder during this process is known from the flowmeter. The filling of gas causes the cylinder pressure to rise. After the pressure reaches a stable level, the filling is stopped and the drop in the cylinder pressure is observed to determine the leakage amount. The thermal imager 5 is then used to observe the overall leakage path. This process is connected to the outside world due to the presence of the exhaust port and the air inlet 801. This requires the rotor to rotate. When the rotor rotates to the compression stroke, with both the air inlet and the air outlet sealed, the cylinder is filled with gas during the compression stroke to observe the leakage process and path. This cylinder-by-cylinder experiment provides guidance for the mechanical design and processing of rotary engines.

[0038] In this embodiment, threaded holes are provided at positions corresponding to the radial sealing pieces 206 on the front and rear end covers 101, and acoustic emission sensors 4 are threadedly installed in the threaded holes. In this embodiment, the acoustic emission sensors 4 can be directly attached to the end surfaces of the radial sealing pieces 206, as shown in the attached diagram. Figure 3 . On the one hand, the sound emitter is used to collect and locate the position of its sound source. If the object moves normally, the waveform is stable. If the object being measured breaks or cracks during this process, the generated wave will change, and the changed waveform will be collected, that is, if the radial sealing piece 206 breaks or cracks, it can be discovered and recorded in time. Moreover, different material properties will have different waveforms, that is, there may be many waves when collecting waveforms, but the waveforms can be determined by different material properties, and the target waves can be obtained by filtering for monitoring. This is conducive to the detection of radial sealing pieces 206 made of different materials. On the other hand, the height of the end face sealing ring 9 can be compensated with the help of the acoustic emission sensor 4 probe, and this compensation area can cover the entire radial sealing piece 206 area to achieve sealing of this area between the two internal combustion chambers.

[0039] In this embodiment, the engine body 1 includes an exhaust port equipped with a particle collection device. This system involves research on tribology and dynamics, and the wear debris and particulate matter generated during the friction process are valuable for subsequent research. Therefore, this design incorporates a particle collection device connected to the exhaust port to collect particulate matter generated within the system and discharged through the exhaust port.

[0040] Example 2 This embodiment is basically as shown in the attached Figure 8 , Attachment Figure 9As shown (the seat body 2 is thinned in the figure): the only difference from the first embodiment is that the cavity remains open on both sides facing the rotor engine end cover. This embodiment also includes an end-to-end sealing compensation mechanism, which includes a force-enhancing sleeve 13 and a shaped sealing sheet 16. The shaped sealing sheet 16 is provided on both sides of the cavity opening. The force-enhancing sleeve 13 is open at one end and closed at the other. The opening of the force-enhancing sleeve 13 is larger than the size of the pressure sensor 204, allowing the pressure sensor 204 to be accommodated and pressed within the sleeve 13. The end-to-end sealing compensation mechanism does not affect the elastic force of the simulated radial sealing sheet 206 adjusted by the adjustment bolt 213 during the force-enhancing end-face sealing.

[0041] The closed end of the booster sleeve 13 has a threaded hole for threading onto the adjusting bolt 213. The outer surface of the booster sleeve 13 is frusto-conical, with the end surface facing the radial seal 206 having a smaller area than the end surface facing away from the radial seal 206. A hexagonal boss 15 is integrally formed on the sealed end of the booster sleeve 13 to facilitate turning the booster sleeve 13 from the cavity opening with a wrench. The adjusting bolt 213 also has a compression nut 14. Pressing the boss 15 with the compression nut 14 before sealing is corrected couples the adjustment of the radial seal 206's elastic force with the correct sealing. Specifically, as the adjusting bolt 213 rotates, the greater the elastic force of the radial seal 206, the greater the supporting pressure of the booster sleeve 13. Furthermore, as the elastic force of the radial seal 206 increases, the internal pressure of the rotary engine increases, which in turn increases the sealing requirements of the end surface. This simplifies operation after coupling. After compensating the sealing, the boss 15 is compressed with the compression nut 14, so that the elastic force of the radial sealing sheet 206 is decoupled from the compensating sealing, making the adjustment more flexible.

[0042] The middle of the special-shaped sealing piece 16 is provided with a V-shaped groove 162 that matches the outer tube of the booster sleeve, so that when the booster sleeve is inserted into the V-shaped groove 162, the special-shaped sealing piece can expand outward along both ends and the radial direction of the booster sleeve. The special-shaped sealing piece 16 is separated from the middle of the V-shaped groove 162 into a left sealing piece 163 and a right sealing piece 164. The separation between the left sealing piece 163 and the right sealing piece 164 is serrated. The special-shaped sealing piece 16 is also provided with wings 161 (attached) on both sides. Figure 5 and attached Figure 6 For clarity, the wings are thickened.)

[0043] The above are only embodiments of the present invention. The invention is not limited to the fields involved in this implementation case. Common knowledge such as the known specific structures and characteristics in the scheme is not described in detail here. Ordinary technicians in the relevant field are aware of all common technical knowledge in the technical field to which the invention belongs before the application date or priority date, can obtain all existing technologies in the field, and have the ability to apply conventional experimental means before that date. Ordinary technicians in the relevant field can improve and implement this scheme in combination with their own abilities under the inspiration given by this application. Some typical known structures or known methods should not become obstacles for ordinary technicians in the relevant field to implement this application. It should be pointed out that for those skilled in the art, without departing from the structure of the present invention, several variations and improvements can be made, which should also be regarded as the scope of protection of the present invention. These will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. Rotary engine seal test detection system, characterized by: Includes engine body, sealing piece test module and drive module; The engine body includes a cylinder block, a rotor and an end cover. The cylinder block contains a combustion chamber and has a mounting opening for detachably mounting a sealing plate test module. A driving module, used to drive the engine to operate; Sealing piece test module, including mounting slot and pressure sensor: The mounting groove seat comprises a seat body, a mounting groove is formed on a side surface of one side of the seat body, and the mounting groove is used to install a radial sealing plate and / or a spring; a cavity is formed in the seat body, and the mounting groove and the cavity are separated by a barrier wall, and a first through hole is formed on the barrier wall to connect the mounting groove and the cavity, and a push rod is slidably connected in the first through hole; The pressure sensor is installed in the cavity, and the push rod is against the pressure sensor.

2. The rotary engine sealing test detection system according to claim 1, characterized in that: It also includes a mounting groove seat that matches the mounting groove, a sealing plate groove for installing a mirror sealing plate is opened on the mounting groove seat, a second through hole connected to the first through hole is opened at the bottom of the sealing plate groove; a force-bearing plate is also provided in the sealing plate groove.

3. The rotary engine sealing test detection system according to claim 1, characterized in that: The push rod includes a large diameter end and a small diameter end. The radial dimension of the large diameter end is larger than that of the small diameter end, and the large diameter end faces the pressure sensor. A sealing ring is installed on the push rod.

4. The rotary engine sealing test detection system according to claim 2, characterized in that: Retaining edges are provided on both sides of the installation slot seat, and a sliding groove that is slidably matched with the retaining edges is provided in the installation slot, and the retaining edges and the sliding groove are slidably matched.

5. The rotary engine sealing test detection system according to claim 1, characterized in that: A cylinder pressure sensor is provided on the engine body at the position corresponding to each combustion chamber; the drive module includes a drive motor, a reduction mechanism and a belt transmission mechanism, the drive motor is connected to the reduction mechanism, the belt transmission mechanism is connected to the input end of the engine body, and a torque sensor is provided on the reduction mechanism; the end cover is made of transparent material; and several temperature sensors are installed on the cylinder body.

6. The rotary engine sealing test detection system according to claim 1, characterized in that: The drive module includes a high-pressure air pump and several high-pressure gas solenoid valves. The high-pressure gas solenoid valves are supplied with air by the high-pressure air pump. Each high-pressure gas solenoid valve supplies air to each combustion chamber of the engine body. The signal for switching the high-pressure gas solenoid valves is controlled by the crankshaft angle signal.

7. The rotary engine sealing test detection system according to claim 1, characterized in that: An inflation port is opened on the engine body corresponding to each combustion chamber, and a one-way valve is installed in the inflation port; it also includes an inflation system, which includes a gas cylinder and a gas heating device. The gas cylinder outlet is connected to the air inlet of the gas heating device after passing through a gas flow meter, and the air outlet of the gas heating device is connected to the one-way valve.

8. The rotary engine sealing test detection system according to claim 7, characterized in that: It also includes a thermal imager, which is facing the engine body; the engine body includes an exhaust port, which is provided with a particle collection device; a threaded hole is opened on the end cover at a position corresponding to the radial sealing plate, and an acoustic emission sensor is installed in the threaded hole.

9. The rotary engine sealing test detection system according to claim 1, characterized in that: The cavity remains open on both sides of the rotor engine end cover; it also includes an end-to-end sealing compensation mechanism, which includes a boosting sleeve and a special-shaped sealing piece. The boosting sleeve is open at one end and closed at the other end. The opening size of the boosting sleeve is larger than the size of the pressure sensor. A threaded hole is provided on the closed end of the boosting sleeve so that the boosting sleeve is threadedly connected to the adjusting bolt, and the outer surface of the boosting sleeve is frustum-shaped; a V-shaped groove is provided in the middle of the special-shaped sealing piece to match the outer tube of the boosting sleeve, so that when the boosting sleeve is inserted into the V-shaped groove, the special-shaped sealing piece can expand outward along the two ends of the sealing piece and the radial direction of the boosting sleeve.

10. The rotary engine sealing test detection system according to claim 9, characterized in that: The adjusting bolt is also provided with several tightening nuts; special-shaped sealing plates are provided on both sides of the cavity opening; the special-shaped sealing plates are separated from the middle of the V-shaped groove into left sealing plates and right sealing plates, and the separation point between the left sealing plates and the right sealing plates is serrated; wings are also provided on both sides of the special-shaped sealing plates.

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