Wave rotor turbine coupling structure and engine

Abstract

The invention provides a wave rotor turbine coupling structure and an engine, and belongs to the technical field of engines, the wave rotor turbine coupling structure comprises a hub cylinder and a coupling piece, the hub cylinder is used for being fixedly connected with a casing of the engine, and a plurality of rotor channels are formed in the outer circumference of the hub cylinder; the coupling piece is rotatably arranged on the hub cylinder, the coupling piece rotates highly, so that an airflow inlet and an airflow outlet in the coupling piece are periodically communicated with each rotor channel of the hub cylinder, combustible gas is pre-compressed in the rotor channels, and high-pressure gas discharged from the airflow outlet impacts the turbine blades to do work; a rotating part and a turbine in the wave rotor part are integrated into one part, only a coupling part needs to be lubricated and sealed, redundant systems such as a motor and lubrication are omitted, and the wave rotor part has the advantages that the system complexity is reduced, the power-to-weight ratio is increased and the like. According to the wave rotor turbine coupling structure, the problem that the number of parts of an existing wave rotor turbine engine is large, and the power-to-weight ratio of the engine cannot be increased easily is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of engines, and particularly relates to a wave rotor turbine coupling structure and an engine. Background Art

[0002] For a wave rotor turbine engine, under the condition of keeping the same engine inlet parameters, a wave rotor component based on constant volume combustion is used to replace the conventional combustion chamber component based on constant pressure combustion. In theory, it can significantly improve the cycle thermal efficiency of the engine, reduce the fuel consumption rate. At the same time, due to the self-boosting characteristic of the wave rotor, the number of compressor stages can be reduced, and the power-to-weight ratio can be improved.

[0003] In the prior art, a conventional turbine engine is composed of structures such as an air intake duct, a compressor, a combustion chamber, a gas turbine, a power turbine, an exhaust device, an accessory device, and a power output shaft. When applying the wave rotor technology to a conventional turbine engine, a wave rotor turbine engine is formed. Its essence is to replace the conventional combustion chamber component with a wave rotor component. The wave rotor component is a rotating part, and a corresponding wave rotor drive motor system needs to be added. The other structures are basically the same as those of a conventional turbine engine.

[0004] However, the wave rotor drive motor system is different from the motor system that drives the compressor to rotate during the engine starting stage. It is an additional device. At the same time, the wave rotor component and the stator part need to be connected by bearings, and the bearings require corresponding lubrication and sealing systems, which increases the system complexity, resulting in an increase in the number of engine components and being not conducive to improving the power-to-weight ratio of the engine. Summary of the Invention

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the problem that the existing wave rotor turbine engine has a large number of components and is not conducive to improving the power-to-weight ratio of the engine, so as to provide a wave rotor turbine coupling structure and an engine.

[0006] To solve the above technical problem, the present invention provides a wave rotor turbine coupling structure, including: a hub barrel and a coupling member. The hub barrel is used for fixedly connecting with the engine casing, and a plurality of rotor channels are arranged on the outer circumference of the hub barrel; the coupling member is rotatably arranged on the hub barrel, and an air flow inlet, an air flow outlet and turbine blades are arranged on the coupling member. The air flow outlet is periodically communicated with the first end of each rotor channel, and the air flow outlet is periodically communicated with the second end of each rotor channel. A plurality of the turbine blades are arranged at intervals on the coupling member, and the high-pressure gas discharged from the air flow outlet impacts the turbine blades to do work.

[0007] During use, a series of rotor channels with a fixed area are provided on the hub cylinder serving as the stator component, and the coupling component serving as the rotating component rotates highly, such that the air flow inlet and the air flow outlet on the coupling component are periodically communicated with each rotor channel of the hub cylinder. Combustible gas enters the rotor channel through the air flow inlet, and compression waves and expansion waves are generated in the rotor channel. The compression waves and the expansion waves are reflected in the rotor channel, thereby realizing the pre-compression process. The pressurized gas is combusted to form high-temperature and high-pressure combustion gas. At the same time, a pre-expansion process is carried out in the wave rotor, and the high-temperature and high-pressure combustion gas is discharged from the air flow outlet and impacts the turbine blade to do work. Integrating the rotating component in the wave rotor component with the turbine into one component can simplify the double-rotor structure into a single-rotor structure, eliminating redundant systems such as motors and lubrication, having many advantages such as reducing system complexity and increasing the power-to-weight ratio. At the same time, the wave rotor can serve as part of the turbine guide vane, having good potential for shortening the axial length of the engine. The wave rotor turbine coupling structure provided by the present invention solves the problem that the existing wave rotor turbine engine has a large number of components, which is not conducive to increasing the power-to-weight ratio of the engine.

[0008] Optionally, the coupling component includes: a rotating shaft, an intake end cover, an exhaust end cover, and turbine blades. The rotating shaft is rotatably disposed in the hub cylinder; the intake end cover is disposed at the first end of the rotating shaft, and at least one of the air flow inlets is disposed on the intake end cover; the exhaust end cover is disposed at the second end of the rotating shaft, and at least one of the air flow outlets is disposed on the exhaust end cover; the turbine blades are disposed on the rotating shaft, and the turbine blades are located on a side of the exhaust end cover away from the intake end cover. Through the above arrangement, the intake end plate, the exhaust end plate, and the turbine blades are coupled through the rotating shaft, and the rotating shaft drives the intake end plate, the exhaust end plate, and the turbine blades to rotate together, which can simplify the double-rotor structure into a single-rotor structure, eliminating redundant systems such as motors and lubrication, having many advantages such as reducing system complexity and increasing the power-to-weight ratio.

[0009] Optionally, two of the air flow inlets are disposed on the intake end cover, and two of the air flow outlets are disposed on the exhaust end cover. Through the above arrangement, two complete cycles can be formed to meet the requirements of the engine operation.

[0010] Optionally, the hub cylinder includes: a cylinder body and guide plates. The cylinder body is used for fixedly connecting with the engine casing; a plurality of guide plates are spaced apart on the cylinder body, and the adjacent two guide plates and the cylinder body enclose to form the rotor channel. Through the above arrangement, the hub cylinder is fixedly connected with the casing through the cylinder body, and a plurality of spaced guide plates form a plurality of rotor channels on the cylinder body. The guide plates can guide the flow direction of the air flow in the rotor channel.

[0011] Optionally, an igniter is provided in each of the rotor channels. Through the above arrangement, the igniter placed in the rotor channel ignites the premixed gas to form high-temperature and high-pressure combustion gas. The combustion in the rotor channel is based on isochoric combustion and has self-pressurization characteristics, which can reduce the number of compressor stages, improve cycle thermal efficiency, reduce fuel consumption, and significantly improve engine performance.

[0012] The engine provided by the present invention comprises a casing and a wave rotor turbine coupling structure described in any one of the above schemes, wherein the hub of the wave rotor turbine coupling structure is fixedly connected to the casing, an air intake assembly is arranged on the casing, and the air intake assembly is arranged upstream of the wave rotor turbine coupling structure, and the air intake assembly has an inlet and an outlet, wherein the inlet is used to collect outside air, and a transition section is arranged at the outlet, and the transition section is connected to the air flow inlet of the wave rotor turbine coupling structure. Through the above arrangement, the inlet of the air intake assembly collects outside air, and the air discharged from the outlet is atomized and mixed with the fuel sprayed from the nozzle in the transition section to form a combustible premixed gas, and the combustible premixed gas enters the interior of the wave rotor turbine coupling structure through the air flow inlet. After the pre-compression process, the igniter placed in the rotor channel ignites the premixed gas to form high-temperature and high-pressure combustion gas, and at the same time, a pre-expansion process is carried out in the wave rotor, and then the high-temperature and high-pressure combustion gas is discharged from the wave rotor and impacts the turbine blades to perform work. Due to the use of the above wave rotor turbine coupling structure, any of the above advantages is obtained.

[0013] Optionally, the air intake assembly includes: an air intake duct and a compressor, the first end of the air intake duct forms the inlet, the second end of the air intake duct is connected to the first end of the compressor, the second end of the compressor forms the outlet, and the compressor and the coupling member of the wave rotor turbine coupling structure are connected through a rotating shaft to form a single rotor structure. Through the above arrangement, the compressor compresses the external air to increase the air flow temperature and pressure.

[0014] Optionally, the engine is a turboshaft or turboprop engine.

[0015] Optionally, an accessory device is further included, and the accessory device is drivingly connected to the turbine blades of the wave rotor turbine coupling structure through a power output shaft. Through the above arrangement, the turbine blades drive the accessory device to operate through the power output shaft.

[0016] Optionally, an exhaust device is further included, the exhaust device being communicated with the exhaust outlet of the wave rotor turbine coupling structure. Through the above arrangement, the high-temperature and high-pressure combustion gas generated by the wave rotor turbine coupling structure is discharged through the exhaust device. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0018] Figure 1 Schematic diagram of an embodiment of the wave rotor turbine coupling structure provided in the embodiment of the present invention;

[0019] Figure 2 is Figure 1 Explosion diagram of the wave rotor turbine coupling structure in

[0020] Figure 3 is Figure 1 Two-dimensional structure diagram of the wave rotor turbine coupling structure in

[0021] Figure 4 Schematic diagram of the engine structure provided in the embodiment of the present invention.

[0022] Explanation of reference numerals:

[0023] 1, hub cylinder; 11, rotor channel; 2, coupling member; 21, rotating shaft; 22, intake end cover; 23, air flow inlet; 24, exhaust end cover; 25, air flow outlet; 26, turbine blade; 3, intake assembly; 31, intake duct; 32, compressor; 33, inlet; 34, outlet; 4, accessory device; 5, power output shaft; 6, exhaust device. Specific embodiments

[0024] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the drawings. Obviously, the described embodiments are some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0025] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0026] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0028] This embodiment provides a wave rotor turbine coupling structure capable of improving the engine weight ratio to enhance the engine performance.

[0029] As Figures 1-3 shown, a specific embodiment of a wave rotor turbine coupling structure provided by this embodiment includes: a hub barrel 1 and a coupling member 2. The hub barrel 1 is used for fixedly connecting with the engine casing. A plurality of rotor channels 11 are arranged on the outer circumference of the hub barrel 1. The coupling member 2 is rotatably arranged on the hub barrel 1. An air inlet 23, an air outlet 25, and turbine blades 26 are arranged on the coupling member 2. The air outlet 25 is periodically communicated with the first end of each rotor channel 11, and the air outlet 25 is periodically communicated with the second end of each rotor channel 11. A plurality of the turbine blades 26 are arranged at intervals on the coupling member 2. The high-pressure gas discharged from the air outlet 25 impacts the turbine blades 26 to do work.

[0030] During use, a series of rotor channels 11 with fixed areas are provided on the hub cylinder 1 serving as the stator component. The coupling component 2 serving as the rotating component rotates highly, such that the air flow inlet 23 and the air flow outlet 25 on the coupling component 2 are periodically communicated with each rotor channel 11 of the hub cylinder 1. Combustible gas enters the rotor channel 11 through the air flow inlet 23. Compression waves and expansion waves are generated in the rotor channel 11, and the compression waves and expansion waves are reflected in the rotor channel 11, thereby realizing the pre-compression process. The pressurized gas forms high-temperature and high-pressure combustion gas through combustion, and at the same time, a pre-expansion process is carried out. The high-temperature and high-pressure combustion gas is discharged from the air flow outlet 25 and impacts the turbine blade 26 to do work. The rotating component in the wave rotor component and the turbine are integrated into one component, and only the coupling component 2 needs to be lubricated and sealed, without the need to be separated. Moreover, the dual-rotor structure can be simplified to a single-rotor structure, eliminating redundant systems such as motors and lubrication, having many advantages such as reducing system complexity and increasing the power-to-weight ratio. At the same time, the wave rotor can serve as a part of the turbine guide vane, having good potential for shortening the axial length of the engine. The wave rotor turbine coupling structure provided by this embodiment solves the problem that the existing wave rotor turbine engine has a large number of components, which is not conducive to increasing the power-to-weight ratio of the engine.

[0031] It should be added that the wave rotor adopted in this embodiment can be an internal combustion wave rotor or an external combustion wave rotor; when the internal combustion wave rotor is adopted, the wave rotor completely replaces the combustion chamber of the engine, and the combustible gas performs constant-volume combustion in the rotor channel 11; when the external combustion wave rotor is adopted, the pressurization effect of pre-compressing the combustible gas in the rotor channel 11 needs to work in combination with an isobaric combustion chamber.

[0032] Figure 3 is a two-dimensional structure diagram formed by cutting along the circumference of the middle diameter of the coupling component 2 and the hub cylinder 1. Along Figure 1 the dotted line (i.e., the section line) in gradually unfolds, the rotation process of the three-dimensional coupling component 2 and the hub cylinder 1 can be simplified to a uniform translation process of the two-dimensional channel on the plane. Finally, the two-dimensional diagram of the coupling component 2 and the hub cylinder 1 as shown in Figure 3 can be drawn. At this time, the three-dimensional rotor channel 11 in the stationary hub cylinder 1 is a rectangle in the two-dimensional diagram. The top rotor channel 11 and the bottom rotor channel 11 in the two-dimensional diagram are annularly connected in the three-dimensional structure (i.e., Figure 3 the two section lines of the two-dimensional channel in are in the same section and are the same section line). The rotation of the coupling component 2 corresponds to the up and down translation movement of the corresponding channel, and the hub cylinder 1 in the middle of the coupling component 2 is stationary. With the translation movement of the rotor channel 11 in the hub cylinder 1, the inlets and outlets of the two end plates at different moments are respectively communicated with different rotor channels 11 in the hub cylinder 1. Thus, the rotor channel 11 is opened and closed according to a certain rule.

[0033] As Figure 1 , Figure 2 shown, in the wave rotor turbine coupling structure provided by this embodiment, the coupling member 2 includes: a rotating shaft 21, an intake end cover 22, an exhaust end cover 24, and turbine blades 26. The rotating shaft 21 is rotatably disposed within the hub cylinder 1; the intake end cover 22 is disposed at the first end of the rotating shaft 21, and at least one air flow inlet 23 is provided on the intake end cover 22; the exhaust end cover 24 is disposed at the second end of the rotating shaft 21, and at least one air flow outlet 25 is provided on the exhaust end cover 24; the turbine blades 26 are disposed on the rotating shaft 21, and the turbine blades 26 are located on the side of the exhaust end cover 24 away from the intake end cover 22. The intake end plate, the exhaust end plate, and the turbine blades 26 are connected through the rotating shaft 21 to form a coupling, and the rotating shaft 21 drives the intake end plate, the exhaust end plate, and the turbine blades 26 to rotate together, which can simplify the dual-rotor structure into a single-rotor structure, eliminating redundant systems such as motors and lubrication, and having many advantages such as reducing system complexity and improving power-to-weight ratio. Additionally, as an alternative embodiment, the intake end plate and the outlet end plate can also be composed of a fixed plate and a plurality of baffles. The fixed plate is connected to the rotating shaft 21, and the baffles form a blockage at the end of the rotor passage 11, and the air flow inlet 23 or the air flow outlet 25 is formed between adjacent two baffles.

[0034] It should be added that those skilled in the art can flexibly select the number of stages of the turbine blades 26 or change the turbine type according to the air flow requirements of the engine.

[0035] As Figures 1-3 shown, in the wave rotor turbine coupling structure provided by this embodiment, two air flow inlets 23 are provided on the intake end cover 22, and two air flow outlets 25 are provided on the exhaust end cover 24. Through the above settings, two complete cycles can be formed to meet the requirements of air flow. Specifically, the sizes of the air flow inlet 23 and the air flow outlet 25 depend on the size of the air flow. Additionally, as an alternative embodiment, the number of the air flow inlets 23 and the air flow outlets 25 can be set to 1 or three or more according to the air flow requirements of the engine.

[0036] As Figure 2As shown in the figure, in the wave rotor turbine coupling structure provided in this embodiment, the hub barrel 1 includes: a barrel body and guide plates. The barrel body is used for fixedly connecting with the engine casing. A plurality of guide plates are spaced apart on the barrel body, and each adjacent pair of the guide plates and the barrel body enclose to form the rotor channels 11. The hub barrel 1 is fixedly connected with the casing through the barrel body. The plurality of spaced-apart guide plates form a plurality of the rotor channels 11 on the barrel body, and the guide plates can guide the flow direction of the air flow in the rotor channels 11.

[0037] As Figure 2 shown in the figure, in the wave rotor turbine coupling structure provided in this embodiment, an igniter is arranged in each of the rotor channels 11. The igniter arranged in the rotor channel 11 ignites the premixed gas to form high-temperature and high-pressure gas. The combustion in the rotor channel 11 is based on constant volume combustion and has the self-boosting characteristic, which can reduce the number of stages of the compressor 32, improve the cycle thermal efficiency and reduce the fuel consumption rate, and significantly improve the engine performance. Additionally, as an alternative embodiment, the igniter can be arranged at the air flow inlet 23 of the intake end plate.

[0038] Usage method:

[0039] As Figure 1 、 Figure 2 shown in the figure, in the wave rotor turbine coupling structure provided in this embodiment, during use, a series of rotor channels 11 with fixed areas are provided on the hub barrel 1 as the stator part, and the coupling part 2 as the rotating part rotates at a high speed, so that the air flow inlet 23 and the air flow outlet 25 on the coupling part 2 are periodically communicated with each of the rotor channels 11 of the hub barrel 1. The combustible gas enters the rotor channel 11 through the air flow inlet 23. Compression waves and expansion waves are generated in the rotor channel 11, and the compression waves and expansion waves are reflected in the rotor channel 11, thereby realizing the pre-compression process. The pressurized gas forms high-temperature and high-pressure gas after combustion, and at the same time, the pre-expansion process is carried out. The high-temperature and high-pressure gas is discharged from the air flow outlet 25 and impacts the turbine blade 26 to do work.

[0040] Additionally, as Figure 4As shown in the figure, this embodiment also provides an engine, which includes a casing and the above-mentioned wave rotor turbine coupling structure. The hub barrel 1 of the wave rotor turbine coupling structure is fixedly connected to the casing. An air intake assembly 3 is arranged on the casing. The air intake assembly 3 is arranged upstream of the wave rotor turbine coupling structure. The air intake assembly 3 has an inlet 33 and an outlet 34. The inlet 33 is used to collect external air. A transition section is arranged at the outlet 34, and the transition section is communicated with the air flow inlet 23 of the wave rotor turbine coupling structure. The inlet 33 of the air intake assembly 3 collects external air. The air discharged from the outlet 34 is atomized and mixed with the fuel sprayed by the nozzle in the transition section to form a combustible premixed gas. The combustible premixed gas enters the interior of the wave rotor turbine coupling structure through the air flow inlet 23. After a pre-compression process, the igniter placed in the rotor passage 11 ignites the premixed gas to form high-temperature and high-pressure gas. At the same time, a pre-expansion process occurs in the wave rotor. Then, the high-temperature and high-pressure gas is discharged from the wave rotor and impacts the turbine blade 26 to do work. By adopting the wave rotor turbine coupling structure described in the above embodiment, the complexity of the engine system is reduced, the power-to-weight ratio and the cycle thermal efficiency are improved. At the same time, the wave rotor can be used as part of the turbine guide vane, so there is good potential to shorten the axial length of the engine.

[0041] As Figure 4 shown in the figure, in the engine provided in this embodiment, the air intake assembly 3 includes: an air intake passage 31 and a compressor 32. The first end of the air intake passage 31 forms the inlet 33. The second end of the air intake passage 31 is communicated with the first end of the compressor 32. The second end of the compressor 32 forms the outlet 34. The compressor 32 and the coupling member 2 of the wave rotor turbine coupling structure are connected by a rotating shaft 21 to form a single-rotor structure. The compressor 32 does work on and compresses the external air, increasing the air flow temperature and pressure. Additionally, as an alternative embodiment, the compressor 32 and the coupling member 2 can also be arranged as a dual-rotor structure or a triple-rotor structure.

[0042] It should be added that those skilled in the art can flexibly select and set a centrifugal, axial, or combined compressor 32 according to the engine's demand for the pressure ratio and set the number of stages of the compressor 32 as needed.

[0043] As Figure 4 shown in the figure, in the engine provided in this embodiment, the engine is a turboshaft or turboprop engine. Additionally, as an alternative embodiment, the engine can also be arranged as a turbojet or turbofan engine.

[0044] As Figure 4As shown, in the engine provided in this embodiment, an accessory device 4 is further included. The accessory device 4 is drivingly connected to the turbine blade 26 of the wave rotor turbine coupling structure through a power output shaft 5. The turbine blade 26 drives the accessory device 4 to operate through the power output shaft 5. Additionally, as an alternative embodiment, when the engine is a turbojet or turbofan engine, the power output shaft 5 can be omitted, and the turbine blade 26 directly outputs power to drive the accessory device 4 to operate.

[0045] It should be added that in the engine provided in this embodiment, the power output shaft 5 and the rotating shaft 21 are the same shaft. Additionally, as an alternative embodiment, the power output shaft 5 and the rotating shaft 21 can also be provided as two shafts in a driving connection.

[0046] As Figure 4 As shown, in the engine provided in this embodiment, an exhaust device 6 is further included. The exhaust device 6 is communicated with the exhaust outlet 34 of the wave rotor turbine coupling structure. The high-temperature and high-pressure gas generated by the wave rotor turbine coupling structure is discharged through the exhaust device 6.

[0047] It should be added that the power output of the engine can be front output or rear output. Generally, an axial exhaust mode is adopted for front output, and a lateral exhaust mode is adopted for rear output.

[0048] Obviously, the above embodiments are merely examples for clear illustration and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or variations can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. And the obvious changes or variations derived therefrom are still within the protection scope of the present invention.

Claims

1. A wave rotor turbine coupling structure, characterized in that, Comprising: A hub barrel (1) for fixedly connecting with the casing of an engine, and a plurality of rotor channels (11) are arranged on the outer circumference of the hub barrel (1); A coupling member (2) rotatably arranged on the hub barrel (1), an air inlet (23), an air outlet (25) and turbine blades (26) are arranged on the coupling member (2), the air outlet (25) is periodically communicated with the first end of each rotor channel (11), the air outlet (25) is periodically communicated with the second end of each rotor channel (11), several turbine blades (26) are arranged at intervals on the coupling member (2), and the high-pressure gas discharged from the air outlet (25) impacts the turbine blades (26) to do work.

2. The wave rotor turbine coupling structure according to claim 1, wherein, The coupling member (2) comprises: A rotating shaft (21) rotatably penetrating through the hub barrel (1); An intake end cover (22) arranged at the first end of the rotating shaft (21), and at least one air inlet (23) is arranged on the intake end cover (22); An exhaust end cover (24) arranged at the second end of the rotating shaft (21), and at least one air outlet (25) is arranged on the exhaust end cover (24); Turbine blades (26) arranged on the rotating shaft (21), and the turbine blades (26) are located on the side of the exhaust end cover (24) away from the intake end cover (22).

3. The wave rotor turbine coupling structure according to claim 2, characterized in that, Two air inlets (23) are arranged on the intake end cover (22), and two air outlets (25) are arranged on the exhaust end cover (24).

4. The wave rotor turbine coupling structure according to any one of claims 1-3, characterized in that The hub barrel (1) comprises: A cylinder body for fixedly connecting with the casing of an engine; Guide plates, several guide plates are arranged at intervals on the cylinder body, and each adjacent pair of guide plates and the cylinder body enclose to form the rotor channel (11).

5. The wave rotor turbine coupling structure according to claim 4, characterized in that, An igniter is arranged in each rotor channel (11).

6. An engine, characterized in that, Comprising a casing and a wave rotor turbine coupling structure according to any one of claims 1-5, the hub barrel (1) of the wave rotor turbine coupling structure is fixedly connected with the casing, an intake assembly (3) is arranged on the casing, the intake assembly (3) is arranged upstream of the wave rotor turbine coupling structure, the intake assembly (3) has an inlet (33) and an outlet (34), the inlet (33) is used for collecting external air, a transition section is arranged at the outlet (34), and the transition section is communicated with the air inlet (23) of the wave rotor turbine coupling structure.

7. The engine according to claim 6, characterized in that, The intake assembly (3) comprises: an intake duct (31) and a compressor (32), the first end of the intake duct (31) forms the inlet (33), the second end of the intake duct (31) is communicated with the first end of the compressor (32), the second end of the compressor (32) forms the outlet (34), and the compressor (32) and the coupling member (2) of the wave rotor turbine coupling structure are connected through a rotating shaft (21) to form a single rotor structure.

8. The engine according to claim 6 or 7, characterized in that, The engine is a turboshaft or turboprop engine.

9. The engine according to claim 8, characterized in that, It further includes an accessory device (4), and the accessory device (4) is in transmission connection with the turbine blade (26) of the wave rotor turbine coupling structure through a power output shaft (5).

10. The engine according to claim 8, characterized in that, It further includes an exhaust device (6), and the exhaust device (6) is communicated with the exhaust outlet (34) of the wave rotor turbine coupling structure.

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