Axial swirler and engine

Abstract

The invention relates to the technical field of aviation, in particular to an axial swirler and an engine, and aims to solve the problems that the size of a channel of an axial swirler in the prior art is effectively adjusted, and it is guaranteed that blades are completely attached to the wall face of the channel. The axial cyclone comprises a fixed cyclone assembly, an adjustable cyclone assembly and a cyclone sleeve, the cyclone sleeve is arranged on the outer side wall of the fixed cyclone assembly, and the adjustable cyclone assembly is rotationally connected with the cyclone sleeve; the adjustable rotational flow assembly comprises a blade adjusting mechanism and a connecting block adjusting mechanism, the blade adjusting mechanism is used for adjusting the gap between the blade and the wall face of the rotational flow channel, and the connecting block adjusting mechanism is used for adjusting the size of the rotational flow channel. The axial swirler and the engine provided by the invention are used for designing the axial swirler.

Description

Technical Field

[0001] The present disclosure relates to the field of aviation technology, and in particular to an axial swirler and an engine. Background Art

[0002] As a core component in the combustion chamber system of an aircraft engine, the swirler plays an important role in constructing swirl and recirculation airflow. The variable geometry swirler can cooperate with flexible control strategies to meet the needs of different combustion conditions. With the development of artificial intelligence, it is expected to achieve intelligent adjustment with the help of data monitoring, and has great development potential.

[0003] Axial swirlers are widely used in high thrust-to-weight ratio turbofan engines. They have the advantages of low pressure loss, compact structure and good flow uniformity. However, the tangential velocity generated by the axial blades is limited, and the swirl intensity is weaker than that of the radial swirler, which affects the combustion efficiency and stability. On the other hand, it is difficult to achieve geometric adjustability. In terms of adjusting the size of the flow channel, the swirlers made of traditional rigid alloy materials have a fixed radius of curvature of the inner and outer cylindrical walls, making it difficult to change the size of the channel. However, due to the shape of the traditional annular channel and the swing of the blades, the blades cannot fit completely with the inner and outer walls of the channel, and the airflow will flow through the gap, weakening the swirl intensity and reducing the combustion performance.

[0004] Therefore, how to solve the problem of effectively adjusting the size of the axial swirler channel in the prior art and ensuring that the blades are completely fitted with the channel wall is one of the important issues to be solved in this field. Summary of the invention

[0005] In view of this, the embodiments of the present disclosure provide an axial swirler and an engine to solve the problem in the prior art of effectively adjusting the size of the axial swirler channel and ensuring that the blades are completely fitted with the channel wall.

[0006] According to one aspect of the present disclosure, an axial swirler is provided, which includes: a fixed swirler assembly, an adjustable swirler assembly and a swirler sleeve, the swirler sleeve is arranged on the outer side wall of the fixed swirler assembly, and the adjustable swirler assembly is rotatably connected to the swirler sleeve; the adjustable swirler assembly includes: a blade adjustment mechanism and a connecting block adjustment mechanism, the blade adjustment mechanism is used to adjust the gap between the blade and the wall of the swirler channel, and the connecting block adjustment mechanism is used to adjust the size of the swirler channel.

[0007] In addition, according to an aspect of the axial swirler of the present disclosure, the axial swirler also includes: a first driving unit, a support member and a first rotating member, the support member is fixedly connected to the swirler sleeve, the first driving unit is fixedly connected to the support member, the first rotating member is sleeved on the swirler sleeve, and the first driving unit is used to drive the first rotating member to rotate.

[0008] According to an aspect of the present disclosure, the axial swirler further includes: a plurality of second rotating members and a plurality of positioning members for fixing the plurality of second rotating members. A plurality of receiving grooves are formed on the outer side wall of the swirler sleeve, and each second rotating member is arranged in the receiving groove through each positioning member; When the first driving unit drives the first rotating member to rotate, the rotation of the first rotating member drives each second rotating member to rotate.

[0009] According to an aspect of the present disclosure, the vane adjustment mechanism includes a first vane segment, a second vane segment, a third vane segment, and a fourth vane segment. One end of the fourth vane segment is fixedly connected to the second rotating member, and the other end of the fourth vane segment is connected to the third vane segment through a buckle; the first vane segment is connected to the second vane segment through a buckle; the second vane segment and the third vane segment are detachably connected.

[0010] According to an aspect of the present disclosure, the vane adjustment mechanism further includes a baffle, a first elastic member, and a second elastic member. A baffle is provided at one end close to the third vane segment along the axial direction of the second vane segment, and the baffle is connected to the end of the second vane segment; A first through hole for placing the first elastic member is formed on the second vane segment. One end of the first elastic member is connected to the baffle, and the other end of the first elastic member is connected to the first vane segment; a second through hole for placing the second elastic member is formed on the third vane segment. One end of the second elastic member is connected to the baffle, and the other end of the second elastic member is connected to the fourth vane segment.

[0011] According to an aspect of the present disclosure, the second vane segment, the third vane segment, and the fourth vane segment are all provided with vent holes for discharging the gas inside the vane adjustment mechanism.

[0012] According to an aspect of the present disclosure, the connecting block adjustment structure includes: a fixing plate, a driving disk, a plurality of connecting rods, a plurality of fixing wheels, a second driving unit, and a plurality of connecting blocks. The second driving unit is fixedly connected to the fixing plate, the driving disk is rotatably connected to the fixing plate, one end of each connecting rod is connected to each fixing wheel, and the other end of each connecting rod is connected to each connecting block.

[0013] According to an aspect of the present disclosure, a sliding groove for the connecting rod to slide is further formed on the driving disk.

[0014] According to an aspect of the present disclosure, a sliding block and a positioning pin are provided on the side surface of each connecting block. The sliding block is fixed on the side surface of each connecting block, the positioning pin is slidably arranged in the sliding block, and the other end of the connecting rod is connected to the positioning pin.

[0015] According to another aspect of the present disclosure, the present disclosure further provides an aeroengine, and the combustion chamber of the aeroengine includes the above-mentioned axial swirler.

[0016] The above at least one technical solution adopted in the embodiments of the present disclosure can achieve the following beneficial effects: In the above axial cyclone, by adjusting the gap between the blades and the wall surface of the swirl passage through the blade adjusting mechanism, the air flow state entering the cyclone can be accurately controlled. A proper gap allows air to enter at a specific angle and speed, better mixing with the fuel to improve combustion efficiency and performance. The connecting block adjusting mechanism can adjust the size of the swirl passage, enabling the axial cyclone to be flexibly adjusted according to different working conditions. Under high-load working conditions, increasing the swirl passage can increase the air flow rate to meet the demand for more fuel combustion. Under low-load working conditions, reducing the swirl passage can ensure sufficient swirl intensity to maintain a stable combustion process. In addition, the reasonable adjustment of the gap between the blades and the wall surface of the swirl passage helps to reduce the friction and collision between the blades and the wall surface, reduce the degree of wear, and extend the service life of the blades. At the same time, the stable air flow can reduce the vibration caused by unstable air flow, improve the stability and reliability of the entire cyclone and the equipment connected thereto, and effectively solve the problem in the prior art of effectively adjusting the size of the axial cyclone passage and ensuring that the blades are completely fitted to the passage wall surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of the present disclosure. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0018] Figure 1 Schematic diagram of the overall structure of an axial cyclone according to an embodiment of the present disclosure; Figure 2 Schematic diagram of the structure of the first rotating member according to an embodiment of the present disclosure; Figure 3 Schematic diagram of the cyclone sleeve structure according to an embodiment of the present disclosure; Figure 4 Schematic diagram of the receiving groove structure according to an embodiment of the present disclosure; Figure 5 Schematic diagram of the positioning member structure according to an embodiment of the present disclosure; Figure 6 Schematic diagram of the structure of the second rotating member according to an embodiment of the present disclosure; Figure 7 Exploded view of the blade adjusting mechanism according to an embodiment of the present disclosure; Figure 8 Schematic diagram of the cooperation structure of the first rotating member and the second rotating member according to an embodiment of the present disclosure; Figure 9 It is a schematic diagram of the blade structure of the blade adjusting mechanism according to an embodiment of the present disclosure; Figure 10 It is a schematic diagram of the connection block structure according to an embodiment of the present disclosure; Figure 11 It is a schematic diagram of the connection block adjusting mechanism according to an embodiment of the present disclosure; Figure 12A It is a schematic diagram of the adjustment of the connection block adjusting mechanism according to an embodiment of the present disclosure; Figure 12B It is a schematic diagram of the adjustment in the channel of the connection block adjusting mechanism according to an embodiment of the present disclosure; Figure 12C It is a schematic diagram of the minimum adjustment of the channel of the connection block adjusting mechanism according to an embodiment of the present disclosure; Figure 13 It is a schematic diagram of the adjustment of the blade adjusting mechanism according to an embodiment of the present disclosure.

[0019] Reference numerals: 1 - Fixed swirl assembly, 2 - Adjustable swirl assembly, 3 - Swirler sleeve, 4 - First rotating member, 5 - First driving unit, 6 - Accommodating groove, 7 - Positioning member, 8 - Second rotating member, 9 - Blade, 91 - First blade segment, 92 - Second blade segment, 93 - Third blade segment, 94 - Fourth blade segment, 10 - Connection block, 101 - Slide block, 102 - Positioning pin, 11 - Fixed wheel, 12 - Link rod, 13 - Fixed plate, 14 - Driving disk. Detailed implementation manners

[0020] The embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although some embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. On the contrary, these embodiments are provided to more thoroughly and completely understand the present disclosure. It should be understood that the drawings and embodiments of the present disclosure are only for exemplary purposes and are not used to limit the protection scope of the present disclosure.

[0021] It should be understood that the various steps recited in the method embodiments of the present disclosure can be executed in a different order and / or in parallel. In addition, the method embodiments may include additional steps and / or omit the steps shown. The scope of the present disclosure is not limited in this regard.

[0022] As used herein, the term "including" and its variations are open-ended, i.e., "including but not limited to". The term "based on" means "at least partially based on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments". The relevant definitions of other terms will be given in the following description. It should be noted that the concepts such as "first", "second", etc. mentioned in this disclosure are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0023] It should be noted that the modifications of "one" and "a plurality of" mentioned in this disclosure are illustrative rather than restrictive. Those skilled in the art should understand that unless otherwise clearly specified in the context, it should be understood as "one or more".

[0024] The names of the messages or information exchanged between multiple devices in the embodiments of this disclosure are only for illustrative purposes and do not limit the scope of these messages or information.

[0025] As a core component within the aero-engine combustion chamber system, the swirler plays an important role in constructing swirling and recirculating airflows. The geometrically variable swirler can cooperate with flexible control strategies to meet the requirements of different combustion conditions. Along with the development of artificial intelligence, it is expected to achieve intelligent adjustment by means of data monitoring and has great development potential.

[0026] Axial swirlers are widely used in high-thrust-to-weight-ratio turbofan engines. They have the advantages of low pressure loss, compact structure, and good flow uniformity. However, the tangential velocity generated by the axial vanes is limited, and the swirl intensity is weaker than that of radial swirlers, which affects combustion efficiency and stability. On the other hand, it is extremely difficult to achieve geometric adjustability. In terms of adjusting the size of the flow channel, for the swirler made of traditional rigid alloy materials, the curvature radii of its cylindrical inner and outer ring walls are fixed, making it difficult to change the channel size. However, due to the limitations of the traditional annular channel shape and vane swing, the vanes cannot fully fit the inner and outer ring walls of the channel, and the air flow will flow through the gaps, weakening the swirl intensity and reducing the combustion performance.

[0027] To address the above problems, the exemplary embodiments of this disclosure provide an axial swirler and an engine to solve the problem of effectively adjusting the size of the axial swirler channel in the prior art and ensuring that the vanes fully fit the channel wall surface.

[0028] Figure 1 The schematic diagram of the overall structure of the axial swirler according to the embodiments of this disclosure is shown in Figure 1As shown in the figure, the axial cyclone includes: a fixed cyclone component 1, an adjustable cyclone component 2, and a cyclone sleeve 3. The cyclone sleeve 3 is provided on the outer wall of the fixed cyclone component 1, and the adjustable cyclone component 2 is rotatably connected to the cyclone sleeve 3. The adjustable cyclone component 2 includes: a vane adjustment mechanism and a connecting block 10 adjustment mechanism. The vane adjustment mechanism is used to adjust the gap between the vane and the wall surface of the cyclone passage, and the connecting block 10 adjustment mechanism is used to adjust the size of the cyclone passage.

[0029] In practical applications, by adjusting the gap between the vane and the wall surface of the cyclone passage through the vane adjustment mechanism, the air flow state entering the cyclone can be accurately controlled. A suitable gap allows air to enter at a specific angle and speed, better mixing with the fuel to improve combustion efficiency and performance. The connecting block 10 adjustment mechanism can adjust the size of the cyclone passage, enabling the axial cyclone to be flexibly adjusted according to different working conditions. Under high-load conditions, increasing the cyclone passage can increase the air flow rate to meet the demand for more fuel combustion. Under low-load conditions, reducing the cyclone passage can ensure sufficient swirl intensity to maintain a stable combustion process. In addition, reasonable adjustment of the gap between the vane and the wall surface of the cyclone passage helps reduce friction and collision between the vane and the wall surface, reduce the degree of wear, and extend the service life of the vane. At the same time, stable air flow can reduce vibrations caused by unstable air flow, improve the stability and reliability of the entire cyclone and the equipment connected thereto, and effectively solve the problem of effectively adjusting the size of the axial cyclone passage in the prior art and ensuring complete fitting of the vane and the passage wall surface.

[0030] Figure 2 is a schematic structural view of a first rotating member 4 according to an embodiment of the present disclosure, Figure 3 is a schematic structural view of the cyclone sleeve 3 according to an embodiment of the present disclosure, Figure 4 is a schematic structural view of the receiving groove 6 according to an embodiment of the present disclosure, Figure 5 is a schematic structural view of the positioning member 7 according to an embodiment of the present disclosure, Figure 6 is a schematic structural view of a second rotating member 8 according to an embodiment of the present disclosure. As Figures 2 - 6 shown, the axial cyclone further includes: a first driving unit 5, a support member, and a first rotating member 4. The support member is fixedly connected to the cyclone sleeve 3, the first driving unit 5 is fixedly connected to the support member, and the first rotating member 4 is sleeved on the cyclone sleeve 3. It should be understood that the above-mentioned first rotating member 4 can be other transmission members such as gears, which will not be specifically described here. Taking a gear as an example, as Figure 2 shown, the first rotating member 4 has a double-gear structure, and the L-shaped bracket design between the double gears makes the outer gears of the double gears stagger axially from the driving disk 14 to avoid mutual influence of their rotational movements. The first driving unit 5 is used to drive the first rotating member 4 to rotate.

[0031] In practical applications, the support is fixed on the cyclone sleeve 3, providing a solid support foundation for the first drive unit 5. This structural design ensures that the first drive unit 5 is in a stable position during operation, reducing displacement or shaking caused by vibration or external force. The support evenly transfers the weight of the first drive unit 5 and the force generated during operation to the cyclone sleeve 3, making the force of the entire structure more reasonable. This can avoid local stress concentration, extend the service life of various components of the cyclone, and improve the reliability and durability of the equipment.

[0032] like Figure 3 As shown, the cyclone sleeve 3 is divided into a cylindrical surface section and a regular polygon section. The number of sides of the regular polygon is the same as the number of blades in the blade adjustment mechanism. The regular polygon section design ensures that during the blade angle rotation adjustment process, the blade root is completely fitted with the inner wall of the regular polygon, avoiding the gap between the blade root and the inner wall surface that affects the swirl intensity. The cylindrical section surface is used to install the first rotating member 4, thereby ensuring that the first rotating member 4 can rotate freely with the cyclone sleeve 3 as the axis to achieve the blade angle adjustment function.

[0033] For example, Figures 4 - 6 As shown, the axial cyclone further comprises: a plurality of second rotating members 8 and a plurality of positioning members 7 for fixing the plurality of second rotating members 8. A plurality of receiving grooves 6 are provided on the outer side wall of the cyclone sleeve 3. Figure 4 As shown, the above-mentioned receiving groove 6 has a cross-sectional structure of being narrow at the top and wide at the bottom, wherein the width of the bottom is the same as the diameter of the root of the blade, and the head is designed in a semicircular shape to achieve the purpose of positioning the blade toothed disc. Each second rotating member 8 is arranged in the receiving groove 6 through each positioning member 7. When the first driving unit 5 drives the first rotating member 4 to rotate, the first rotating member 4 rotates and drives each second rotating member 8 to rotate.

[0034] In practical applications, multiple positioning members 7 fix the second rotating member 8 in the receiving groove 6 of the cyclone sleeve 3. This multi-point positioning method provides a stable installation foundation for the second rotating member 8. When the axial cyclone is running at high speed or subjected to complex working conditions, the cooperation between the positioning member 7 and the receiving groove 6 can effectively limit the displacement and shaking of the second rotating member 8, and prevent structural failure caused by loose components. At the same time, the dispersed fixed points can evenly distribute the load during the working process, avoid local stress concentration, extend the service life of the entire cyclone, and ensure stable operation of the equipment. In addition, the first rotating member 4 drives the multiple second rotating members 8 to rotate synchronously, ensuring the consistency of the movements of the various parts of the adjustable cyclone assembly 2. This synchronous transmission mechanism can also reduce the additional wear and vibration caused by transmission differences, and improve the stability and reliability of equipment operation. Secondly, the setting of multiple second rotating members 8 increases the degree of freedom of the adjustable cyclone assembly 2, so that the axial cyclone can achieve more precise adjustment. According to different working conditions, the first driving unit 5 drives the first rotating member 4, so as to flexibly control the rotation angles and amplitudes of the plurality of second rotating members 8, thereby making diversified adjustments to the blade gaps of the swirl channel.

[0035] Figure 7 is an exploded view illustrating a blade adjustment mechanism according to an embodiment of the present disclosure, Figure 8 is a schematic diagram showing the cooperation structure of the first rotating member 4 and the second rotating member 8 according to an embodiment of the present disclosure, Figure 9 Schematic diagram of the blade structure of the blade adjustment mechanism according to the embodiment of the present disclosure. Figures 7 - 9 As shown, the blade adjustment mechanism includes a first blade segment 91, a second blade segment 92, a third blade segment 93 and a fourth blade segment 94. One end of the fourth blade segment 94 is fixedly connected to the second rotating member 8, and the other end of the fourth blade segment 94 is connected to the third blade segment 93 through a lock; the first blade segment 91 and the second blade segment 92 are connected through a lock; the second blade segment 92 and the third blade segment 93 are detachably connected. The blade adjustment mechanism also includes a baffle, a first elastic member and a second elastic member. It should be understood that the first elastic member and the second elastic member can be elastic bodies such as springs, which will not be described in detail here. A baffle is provided along the axial direction of the second blade segment 92 and close to one end of the third blade segment 93, and the baffle is connected to the end of the second blade segment 92; a first through hole for placing a first elastic member is opened on the second blade segment 92, one end of the first elastic member is connected to the baffle, and the other end of the first elastic member is connected to the first blade segment 91; a second through hole for placing a second elastic member is opened on the third blade segment 93, one end of the second elastic member is connected to the baffle, and the other end of the second elastic member is connected to the fourth blade segment 94.

[0036] In practical applications, such as Figures 7 - 9As shown, before the axial cyclone starts, the vane adjusting mechanism is in its initial state. Each vane segment is fixed by a latch connection. The first elastic member and the second elastic member are in their natural states, and there is a certain initial gap between the vanes and the wall surface of the swirl channel. When the first driving unit 5 drives the first rotating member 4 to rotate, the first rotating member 4 drives the second rotating member 8 to rotate, and the fourth vane segment 94 fixedly connected to the second rotating member 8 rotates accordingly. The rotation of the fourth vane segment 94 causes the second elastic member to expand and contract. Since one end of the second elastic member is connected to the baffle and the other end is connected to the fourth vane segment 94, the expansion and contraction of the second elastic member drives the third vane segment 93 to move. At the same time, the first elastic member also expands and contracts due to the movement of the second vane segment 92, thereby driving the first vane segment 91 to move. Through the relative movement of the first vane segment 91, the second vane segment 92, the third vane segment 93, and the fourth vane segment 94, the adjustment of the gap between the vanes and the wall surface of the swirl channel is achieved.

[0037] During the operation of the axial cyclone, the air pressure and velocity in the swirl channel change. When the air pressure increases, the elastic members are compressed, driving the vane segments to move towards the wall surface, reducing the gap between the vanes and the wall surface to adapt to the air flow changes. When the air pressure decreases, the elastic members expand, driving the vane segments away from the wall surface, increasing the gap, and ensuring the stability of the swirl. In addition, the vane adjusting mechanism is composed of multiple vane segments, and the vane segments are connected by latches or detachable connections, which enables the length and shape of the vanes to be flexibly adjusted according to actual needs. When it is necessary to change the gap between the vanes and the wall surface of the swirl channel, the connection method or position of each vane segment can be adjusted to achieve precise fine-tuning of the gap, thereby optimizing the swirl effect and improving the combustion efficiency. Secondly, the setting of the first elastic member and the second elastic member enables the vane adjusting mechanism to adaptively adjust according to the pressure and air flow changes in the swirl channel. When the air pressure changes, the elastic members expand and contract accordingly, driving the vane segments to move, and automatically adjusting the gap between the vanes and the wall surface to ensure the stability and uniformity of the swirl.

[0038] On this basis, the first elastic member and the second elastic member play a buffering role during the vane adjustment process, capable of absorbing and dispersing the impact force and vibration received by the vanes, reducing the damage and fatigue of the vanes, and extending the service life of the vanes. The setting of the baffle provides support and limit for the elastic members, ensuring the normal operation of the elastic members. At the same time, it also prevents the vane segments from moving excessively during the adjustment process, enhancing the structural stability and reliability of the vane adjusting mechanism.

[0039] Exemplarily, such as Figure 9As shown, the second vane segment 92, the third vane segment 93, and the fourth vane segment 94 are all provided with ventilation holes for discharging the gas inside the vane adjusting mechanism. During the operation of the axial cyclone, local high or low pressure areas are likely to be formed inside the vane adjusting mechanism due to gas accumulation, resulting in airflow disorder. The ventilation holes can discharge the accumulated gas in a timely manner, avoid pressure fluctuations, ensure the stability and uniformity of the airflow in the swirl channel, and keep the cyclone in an efficient working state all the time.

[0040] Figure 10 is a schematic structural diagram of the connecting block 10 according to an embodiment of the present disclosure, Figure 11 is a schematic diagram of the adjusting mechanism of the connecting block 10 according to an embodiment of the present disclosure. As Figures 10 - 11 shown, the adjusting structure of the connecting block 10 includes: a fixing plate 13, a driving disk 14, a plurality of connecting rods 12, a plurality of fixing wheels 11, a second driving unit, and a plurality of connecting blocks 10. It should be understood that the above-mentioned connecting block 10 is specifically an isosceles triangular block, the height of the isosceles triangle is designed according to the size of the driving disk 14, the thickness of the connecting block 10 is designed according to the length of the cyclone channel, the second driving unit is fixedly connected to the fixing plate 13, the driving disk 14 is rotatably connected to the fixing plate 13, one end of each connecting rod 12 is connected to each fixing wheel 11, and the other end of each connecting rod 12 is connected to each connecting block 10. The driving disk 14 is also provided with a sliding groove for the connecting rod 12 to slide. A sliding block 101 and a positioning pin 102 are provided on the side surface of each connecting block 10. The sliding block 101 is fixed on the side surface of each connecting block 10, and the positioning pin 102 is slidably arranged in the sliding block 101, and the other end of the connecting rod 12 is connected to the positioning pin 102.

[0041] In practical applications, as Figures 10 - 11 shown, when the second driving unit starts to work, since the second driving unit is fixedly connected to the fixing plate 13, the power output of the second driving unit will drive the connected driving disk 14 to rotate. The driving disk 14 makes a circular motion on the fixing plate 13, providing the initial power for subsequent adjustment actions. The driving disk 14 is provided with a sliding groove for the connecting rod 12 to slide. When the driving disk 14 rotates, the sliding groove will guide the connected connecting rod 12 to move. One end of each connecting rod 12 is connected to the fixing wheel 11, and the fixing wheel 11 plays a role in supporting and positioning the connecting rod 12 to ensure the stability of the movement of the connecting rod 12. The other end of the connecting rod 12 is connected to the sliding block 101 on the side surface of the connecting block 10 through the positioning pin 102. As the connecting rod 12 moves driven by the sliding groove of the driving disk 14, the positioning pin 102 slides in the sliding block 101, thereby pushing the connecting block 10 to move. Since there are a plurality of connecting rods 12 and connecting blocks 10, they will cooperate to accurately adjust the position of the connecting block 10 according to the rotation direction and angle of the driving disk 14, and then adjust the size of the swirl channel.

[0042] Therefore, the rotation of the drive disk 14 can be achieved by precisely controlling the second drive unit, which enables the movement distance and position of the connecting block 10 to be accurately controlled. Secondly, the coordinated operation of multiple linkages 12 and the connecting block 10 ensures the adjustment consistency of each part of the swirl channel, avoiding uneven local adjustment and further improving the adjustment accuracy. In addition, the fixed plate 13 provides a stable support foundation for the entire adjustment structure. The support and positioning effects of the fixed wheel 11 on the linkage 12, as well as the constraints of the slider 101 and the positioning pin 102 on the movement of the connecting block 10, enhance the structural stability. In the case of the high-speed operation of the axial cyclone or external vibration, this structure can maintain a stable working state to ensure the normal realization of the adjustment function. The guiding effect of the chute on the linkage 12 prevents the linkage 12 from wobbling or shifting during movement, further improving the structural stability and reliability. On this basis, the rotation of the drive disk 14 can achieve continuous adjustment, and can adjust the size of the swirl channel in real time and flexibly according to different working conditions. It can quickly respond and make corresponding adjustments under different working conditions. The independent and coordinated movement modes of multiple connecting blocks 10 enable the adjustment of the swirl channel to achieve diverse changes, adapting to different air flow distributions and swirl requirements.

[0043] Figure 12A is a schematic diagram showing the maximum adjustment of the channel of the connecting block adjustment mechanism according to an embodiment of the present disclosure, Figure 12B is a schematic diagram showing the medium adjustment of the channel of the connecting block adjustment mechanism according to an embodiment of the present disclosure, Figure 12C is a schematic diagram showing the minimum adjustment of the channel of the connecting block adjustment mechanism according to an embodiment of the present disclosure. As Figures 12A - 12C shown, when the drive disk 14 rotates counterclockwise, the connecting block 10 moves towards the center along the slide groove, causing the connecting block 10 to gradually tend to close, reducing the area of the swirl channel. At the same time, it drives the cyclone sleeve 3 and the first drive unit 5 to also have a small counterclockwise rotational movement. At this time, if the first drive unit 5 stops working, when the first rotating member 4 does not rotate and the motor gear is fixed and does not rotate, at this time, the transmission gear in the first drive unit 5 is externally meshed with the gear in the first rotating member 4, thereby driving the first rotating member to rotate, so that there is no relative movement between the cyclone sleeve 3, the first drive unit 5, the first rotating member 4 and the second rotating member 8, and they all rotate synchronously with the cyclone sleeve 3 by a small amount, so as to ensure that when the first drive unit 5 does not rotate, during the change of the swirl channel, the blade angle remains unchanged. However, if the first drive unit 5 starts to work at this time, it will drive the first rotating member 4 and the second rotating member 8 to generate a superimposed relative rotation along with the rotating cyclone sleeve 3, thereby driving the second rotating member 8 to rotate, and realizing the synchronous adjustment of the blade angle during the change of the swirl channel.

[0044] Figure 13It is a schematic diagram showing the adjustment of the blade adjustment mechanism according to an embodiment of the present disclosure. As Figure 13 shown, the first driving unit 5 drives the first rotating member 4 to rotate, and at the same time drives the second rotating member 8 to rotate, so as to realize the 360° full-angle adjustment of the blade angle. Moreover, the adjustment control strategy of the rotation angle of the first driving unit 5 has nothing to do with whether the size of the swirl passage changes, which is more convenient and flexible to control.

[0045] An exemplary embodiment of the present disclosure provides an aeroengine. The combustion chamber of the aeroengine includes the axial swirler of the exemplary embodiment of the present disclosure.

[0046] Compared with the prior art, the beneficial effects of the aeroengine provided by the embodiment of the present disclosure refer to the beneficial effects of the axial swirler, which will not be elaborated here.

[0047] The above description is only some embodiments of the present disclosure and an explanation of the applied technical principles. Those skilled in the art should understand that the scope of disclosure involved in the present disclosure is not limited to the technical solutions formed by the specific combination of the above technical features, and should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the above disclosure concept. For example, the technical solutions formed by mutually replacing the above features with the technical features (but not limited to) having similar functions disclosed in the present disclosure.

[0048] Although some specific embodiments of the present disclosure have been described in detail by way of examples, those skilled in the art should understand that the above examples are only for the purpose of illustration and not for the purpose of limiting the scope of the present disclosure. Those skilled in the art should understand that the above embodiments can be modified without departing from the scope and spirit of the present disclosure. The scope of the present disclosure is defined by the appended claims.

Claims

1. An axial cyclone, characterized in that: The axial swirler comprises: a fixed swirler assembly, an adjustable swirler assembly and a swirler sleeve, wherein the swirler sleeve is arranged on the outer side wall of the fixed swirler assembly, and the adjustable swirler assembly is rotatably connected to the swirler sleeve; The adjustable swirl assembly comprises: a blade adjustment mechanism and a connection block adjustment mechanism, wherein the blade adjustment mechanism is used to adjust the gap between the blade and the wall surface of the swirl channel, and the connection block adjustment mechanism is used to adjust the size of the swirl channel.

2. The axial swirler according to claim 1, characterized in that: The axial swirler also includes: a first driving unit, a support member and a first rotating member, the support member is fixedly connected to the swirler sleeve, the first driving unit is fixedly connected to the support member, the first rotating member is sleeved on the swirler sleeve, and the first driving unit is used to drive the first rotating member to rotate.

3. The axial swirler according to claim 2, characterized in that: The axial swirler further comprises: a plurality of second rotating members and a plurality of positioning members for fixing the plurality of second rotating members, a plurality of receiving grooves are provided on the outer side wall of the swirler sleeve, and each of the second rotating members is arranged in the receiving groove through each of the positioning members; When the first driving unit drives the first rotating member to rotate, the rotation of the first rotating member drives each of the second rotating members to rotate.

4. The axial swirler according to claim 3, characterized in that: The blade adjustment mechanism includes a first blade segment, a second blade segment, a third blade segment and a fourth blade segment, one end of the fourth blade segment is fixedly connected to the second rotating member, and the other end of the fourth blade segment is connected to the third blade segment via a lock; the first blade segment and the second blade segment are connected via a lock; the second blade segment and the third blade segment are detachably connected.

5. The axial swirler according to claim 4, characterized in that: The blade adjustment mechanism further includes a baffle, a first elastic member and a second elastic member, wherein the baffle is provided along the axial direction of the second blade segment close to one end of the third blade segment, and the baffle is connected to the end of the second blade segment; The second blade segment is provided with a first through hole for placing the first elastic member, one end of the first elastic member is connected to the baffle, and the other end of the first elastic member is connected to the first blade segment; the third blade segment is provided with a second through hole for placing the second elastic member, one end of the second elastic member is connected to the baffle, and the other end of the second elastic member is connected to the fourth blade segment.

6. The axial swirler according to claim 4, characterized in that: The second blade segment, the third blade segment and the fourth blade segment are all provided with vent holes for discharging the gas inside the blade adjustment mechanism.

7. The axial swirler according to claim 1, characterized in that: The connecting block adjustment structure includes: a fixed plate, a driving disk, a plurality of connecting rods, a plurality of fixed wheels, a second driving unit and a plurality of connecting blocks, the second driving unit is fixedly connected to the fixed plate, the driving disk is rotatably connected to the fixed plate, one end of each of the connecting rods is connected to each of the fixed wheels, and the other end of each of the connecting rods is connected to each of the connecting blocks.

8. The axial swirler according to claim 7, characterized in that: The driving disc is also provided with a sliding groove for the connecting rod to slide.

9. The axial swirler according to claim 7, characterized in that: A slider and a positioning pin are provided on the side of each connecting block. The slider is fixed on the side of each connecting block. The positioning pin is slidably arranged in the slider. The other end of the connecting rod is connected to the positioning pin.

10. An aircraft engine, characterized in that: The combustion chamber of the aircraft engine comprises the axial swirler according to any one of claims 1 to 9.

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