Axially adjustable gas compressor

Abstract

The invention relates to the technical field of gas compressors, and discloses an axially-adjustable gas compressor which comprises an outer shell, a center shaft is arranged in the outer shell, an inner shell is fixedly connected to one end of the center shaft, a plurality of rotating rings are rotationally connected to the outer portion of the inner shell, and a plurality of rotor blades are arranged on the outer portion of the inner shell. The multiple sets of rotor blades are fixedly connected to the outer portions of the multiple rotating rings, and an adjusting assembly is arranged in the shell. The adjusting assembly comprises multiple sets of connecting holes, and the multiple sets of connecting holes are formed in the shell. According to the axial flow compressor, the angle of the stator blade in the axial flow compressor can be flexibly adjusted, so that the flow direction and speed of airflow are changed, the airflow conveniently enters the rotor blade at the optimal angle, lubricating oil is conveniently sprayed to gear rings and gears, friction resistance generated when the gears make contact with the gear rings is reduced, and the transmission efficiency is improved; and meanwhile, the silencing effect in the axial flow compressor is enhanced, and the phenomenon that the connecting position collides with the shell due to vibration of the center shaft, and noise is generated is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of air compressors, and in particular to an axially adjustable air compressor. Background Art

[0002] The compressor, whose full name is air compressor, is a component in a gas turbine engine that uses high-speed rotating blades to do work for the air to increase the air pressure. According to the flow direction of the airflow in the compressor, the compressor can be divided into axial flow compressor, centrifugal compressor and hybrid or combined compressor. The axial flow compressor is a type of compressor in which the airflow mainly flows axially. Axial flow compressors are widely used in various gas turbines, especially in aviation gas turbines, electric gas turbines and industrial gas turbines. In the aviation field, axial flow compressors, as one of the core components of jet engines, are responsible for compressing large amounts of air and transmitting it to the combustion chamber for combustion; in the electric power field, axial flow compressors are used to increase the intake pressure of gas turbines, thereby improving power generation efficiency.

[0003] After searching, a Chinese patent with announcement number CN109209995B discloses an axial flow compressor, which brings a cavity structure for the sealing method. Due to the pressure difference before and after the cavity, a cavity leakage vortex will be generated inside. The edge plate with unreasonable structural design will also cause the mainstream to impact into the cavity, causing greater losses. Therefore, the losses caused by the impact of the mainstream on the cavity are avoided, and the comb tooth leakage losses caused by the pressure difference before and after are reduced.

[0004] The above-mentioned compressor is convenient for reducing the loss caused by the impact of the mainstream on the cavity. However, in the prior art, when the axial flow compressor is in use, it usually has multiple rows of stator blades inside. The stator blades are fixed inside the axial flow compressor, which makes it difficult to adjust the angle of the stator blades. The rotation angle of the stator blades directly affects the angle of attack of the airflow before entering the next-stage rotor blades. If the angle of the stator blades is not appropriate, it is easy to be impacted by the airflow and attacked by vortexes, causing the compressor to become unstable and reducing working efficiency. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art and to propose an axially adjustable compressor.

[0006] In order to achieve the above-mentioned object, the present invention adopts the following technical scheme: an axially adjustable compressor, comprising an outer shell, a central shaft is arranged inside the outer shell, one end of the central shaft is fixedly connected to an inner shell, the outer shell is rotatably connected to a plurality of rotating rings, a plurality of groups of moving blades are arranged outside the inner shell, the plurality of groups of moving blades are fixedly connected to the outside of a plurality of rotating rings, and an adjusting component is arranged inside the outer shell; The adjustment assembly comprises a plurality of connection holes, wherein the plurality of connection holes are arranged inside the housing, a rotating shaft is rotatably connected inside the connection holes, and a stator blade is fixedly connected to one end of the rotating shaft.

[0007] As a further description of the above technical solution: The other end of the rotating shaft is fixedly connected to a driven gear, and the inner wall of the inner shell is rotatably connected to a plurality of first gear rings, the plurality of first gear rings are meshingly connected to a plurality of groups of driven gears, and the inner walls of the plurality of first gear rings are fixedly connected to two connecting rods.

[0008] As a further description of the above technical solution: A plurality of fixed blocks are fixedly connected to one side of one of the first gear rings, a second gear ring is fixedly connected to one side of the plurality of fixed blocks, and a rotating rod is rotatably connected to the upper surface of the shell.

[0009] As a further description of the above technical solution: One end of the rotating rod is fixedly connected to a driving gear, and the driving gear is meshed with the second gear ring. A stepper motor is fixedly mounted on the upper surface of the housing, and the other end of the rotating rod is fixedly connected to the output end of the stepper motor.

[0010] As a further description of the above technical solution: A lubrication assembly is disposed on the lower surface of the shell, and the lubrication assembly includes a liquid storage tank, which is fixedly connected to the lower surface of the shell, a liquid inlet pipe is connected through one side of the liquid storage tank, and a liquid blocking cover is threadedly connected to one end of the liquid inlet pipe.

[0011] As a further description of the above technical solution: A circulation pipe is connected to one side of the liquid storage tank, a booster pump is installed in the middle of the circulation pipe, and the booster pump is fixedly installed on the lower surface of the outer shell. One end of the circulation pipe is connected to a spray pipe, and one end of the spray pipe is fixedly connected to the inner wall of the inner shell. A plurality of spray heads are connected to the lower surface of the spray pipe, and a through hole is opened on the lower surface of the outer shell.

[0012] As a further description of the above technical solution: One end of the central axis is fixedly connected to two connecting plates, and silencer components are respectively arranged on both sides of the inner wall of the shell. The silencer components include mounting grooves, and the two mounting grooves are respectively opened on both sides of the inner wall of the shell, and the inner walls of the mounting grooves are fixedly connected to the limiting frame.

[0013] As a further description of the above technical solution: A limiting plate is fixedly connected to one side of the connecting plate, and the limiting plate is slidably connected to the inside of the mounting groove, and two fixing tubes and two springs are fixedly connected to the inside of the mounting groove.

[0014] As a further description of the above technical solution: The spring is arranged inside the fixed tube, one side of the limit plate is fixedly connected to two sliding tubes, the outer wall of the sliding tube and the inner wall of the fixed tube are respectively fixedly connected to limit rings, and the limit rings are made of rubber.

[0015] The present invention has the following beneficial effects: 1. The present invention adds a function of facilitating the adjustment of the angle of the stator blades inside the axial flow compressor to the axial flow compressor by setting an adjustment component, and changes the flow direction and speed of the airflow through the angle of the stator blades, so that the airflow enters the rotor blades at a more appropriate angle, thereby reducing the impact of the airflow and the eddy current loss, and improving the efficiency of the compressor. At the same time, the optimized airflow path also helps to reduce the vibration and noise of the compressor, optimize the flow and pressure distribution of the compressor, help to enhance the stability of the compressor, reduce the occurrence of unstable phenomena such as surge, and improve the reliability and durability of the engine.

[0016] 2. The present invention increases the lubrication of the adjustment component for adjusting the stator blades in the axial compressor by setting a lubricating component, which helps to spray lubricating oil on the ring gear and the gear, thereby reducing the dullness when the gear contacts the ring gear, facilitating the smooth meshing of the gear and the ring gear, improving the transmission efficiency, reducing the wear of the gear and the ring gear due to excessive friction, and enhancing the smoothness of the use of the adjustment component.

[0017] 3. The present invention enhances the silencing effect of the interior of the axial compressor to a certain extent by setting the silencing component, which helps to reduce the vibration force generated by the rotation of the rotor blades, and the vibration force acts on the central axis to make the central axis vibrate, and the connection collides with the outer shell to generate noise, so it is convenient to silence the connection of the central axis, thereby reducing the noise impact on the surrounding environment.

[0018] In summary, the present invention comprehensively optimizes the axial flow compressor by integrating the adjustment component, the lubrication component and the silencer component, so that the angle of the stator blades inside the axial flow compressor can be flexibly adjusted, thereby changing the flow direction and speed of the airflow, and facilitating the airflow to enter the rotor blades at the optimal angle. At the same time, the optimized airflow path reduces the vibration and noise level of the compressor, enhances the stability of the compressor, and facilitates the spraying of lubricating oil on the ring gear and the gear, reduces the friction resistance when the gear contacts the ring gear, improves the transmission efficiency, and extends the service life of the adjustment component. At the same time, the silencer effect inside the axial flow compressor is enhanced, and the phenomenon of noise generated by the collision between the connection and the outer casing due to the vibration of the central shaft is reduced, thereby reducing the noise impact of the axial flow compressor on the surrounding environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure proposed by the present invention; Figure 2 This is a schematic diagram of the liquid inlet pipe structure proposed by the present invention; Figure 3 This is a schematic diagram of the inner shell structure proposed by the present invention; Figure 4 This is a schematic diagram of the cross-sectional structure of the shell proposed by the present invention; Figure 5 This is a schematic diagram of the structure of the second gear ring proposed by the present invention; Figure 6 This is a schematic diagram of the structure of the first gear ring proposed by the present invention; Figure 7 This is a schematic diagram of the structure of the liquid discharge pipe proposed by the present invention; Figure 8 This is a schematic diagram of the connecting plate structure proposed by the present invention; Fig. 9 for Figure 8 Enlarged view of point A in the middle.

[0020] Legend: 1. Outer shell; 2. Central axis; 3. Inner shell; 4. Rotating ring; 5. Moving blades; 6. Connecting hole; 7. Rotating shaft; 8. Stator blades; 9. Driven gear; 10. First gear ring; 11. Connecting rod; 12. Fixed block; 13. Second gear ring; 14. Rotating rod; 15. Driving gear; 16. Stepper motor; 17. Liquid storage tank; 18. Liquid inlet pipe; 19. Liquid blocking cover; 20. Circulation pipe; 21. Booster pump; 22. Liquid spray pipe; 23. Liquid spray head; 24. Through hole; 25. Connecting plate; 26. Mounting groove; 27. Limit frame; 28. Limit plate; 29. ​​Fixed pipe; 30. Spring; 31. Sliding pipe; 32. Limit ring. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] As attached Figure 1-9 As shown, an embodiment of the present invention is: an axially adjustable compressor, comprising an outer shell 1, a central shaft 2 is arranged inside the outer shell 1, one end of the central shaft 2 is fixedly connected to an inner shell 3, a plurality of rotating rings 4 are rotatably connected to the outside of the inner shell 3, a plurality of groups of moving blades 5 are arranged outside the inner shell 3, the plurality of groups of moving blades 5 are fixedly connected to the outside of the plurality of rotating rings 4, an adjusting component is arranged inside the outer shell 1, the plurality of rotating rings 4 are arranged in descending order outside the inner shell 3, and the plurality of groups of moving blades 5 are arranged in descending order outside the inner shell 3; The adjustment component includes multiple groups of connecting holes 6, which are opened inside the outer shell 1. The inside of the connecting holes 6 is rotatably connected to a rotating shaft 7, and one end of the rotating shaft 7 is fixedly connected to a stator blade 8. The multiple groups of connecting holes 6 are distributed in a ring shape inside the outer shell 1, and the multiple stator blades 8 are distributed in a ring shape outside the inner shell 3, and are arranged in sequence from large to small.

[0023] As attached Figure 6 As shown, the other end of the rotating shaft 7 is fixedly connected to a driven gear 9, and the inner wall of the inner shell 3 is rotatably connected to a plurality of first gear rings 10, and the plurality of first gear rings 10 are meshingly connected to the plurality of groups of driven gears 9, and the inner walls of the plurality of first gear rings 10 are fixedly connected to two connecting rods 11, wherein one side of one first gear ring 10 is fixedly connected to a plurality of fixed blocks 12, and one side of the plurality of fixed blocks 12 is fixedly connected to a second gear ring 13, so that the driven gear 9 can rotate under the connection with the first gear ring 10, and the plurality of first gear rings 10 are arranged in sequence from large to small, and the second gear ring 13 is used to be connected to the driving gear 15.

[0024] As attached Figure 4 As shown, a rotating rod 14 is rotatably connected to the upper surface of the housing 1, one end of the rotating rod 14 is fixedly connected to a driving gear 15, the driving gear 15 and the second gear ring 13 are meshingly connected, a stepping motor 16 is fixedly installed on the upper surface of the housing 1, the other end of the rotating rod 14 is fixedly connected to the output end of the stepping motor 16, and the driving gear 15 is convenient for driving the second gear ring 13 to rotate.

[0025] As attached Figure 7As shown, a lubrication assembly is provided on the lower surface of the shell 1, and the lubrication assembly includes a liquid storage tank 17, which is fixedly connected to the lower surface of the shell 1, and a liquid inlet pipe 18 is connected to one side of the liquid storage tank 17, and a liquid blocking cover 19 is threadedly connected to one end of the liquid inlet pipe 18, and a circulation pipe 20 is connected to one side of the liquid storage tank 17, and a booster pump 21 is installed in the middle of the circulation pipe 20, and the booster pump 21 is fixedly installed on the lower surface of the shell 1, and a liquid spray pipe 22 is connected to one end of the circulation pipe 20, and one end of the liquid spray pipe 22 is fixedly connected to the inner wall of the inner shell 3, and a plurality of liquid spray heads 23 are connected to the lower surface of the liquid spray pipe 22, and the liquid storage tank 17 is used to store lubricating liquid, and the liquid inlet pipe 18 is convenient for adding lubricating liquid to the inside of the liquid storage tank 17, and the liquid blocking cover 19 is used to prevent liquid from flowing out, and the liquid spray head 23 is convenient for spraying liquid to the gear ring, so that the lubricating liquid is evenly distributed under the rotation of the gear ring.

[0026] As attached Figure 8 As shown, a through hole 24 is provided on the lower surface of the shell 1, and two connecting plates 25 are fixedly connected to one end of the central axis 2. Silencers are provided on both sides of the inner wall of the shell 1, and the silencers include mounting grooves 26. The two mounting grooves 26 are respectively provided on both sides of the inner wall of the shell 1. The through hole 24 is used for connecting the circulation pipe 20, and the mounting groove 26 facilitates the installation of the spring 30.

[0027] As attached Fig. 9 As shown, the inner wall of the mounting groove 26 is fixedly connected to a limit frame 27, one side of the connecting plate 25 is fixedly connected to a limit plate 28, the limit plate 28 is slidably connected to the inside of the mounting groove 26, the inside of the mounting groove 26 is fixedly connected to two fixed tubes 29 and two springs 30, the spring 30 is arranged inside the fixed tube 29, one side of the limit plate 28 is fixedly connected to two sliding tubes 31, the outer wall of the sliding tube 31 and the inner wall of the fixed tube 29 are respectively fixedly connected to a limit ring 32, the limit ring 32 is made of rubber material, the cooperation between the limit frame 27 and the limit plate 28 helps to limit the movement of the connecting plate 25 inside the mounting groove 26, the spring 30 helps to silence the vibration force through its own elastic force, the sliding tube 31 and the fixed tube 29 facilitate the limiting protection of the spring 30.

[0028] Working principle: when the angle of the internal stator blade 8 needs to be adjusted, the stepper motor 16 is turned on, and its output end drives the rotating rod 14 to rotate, and the rotating rod 14 drives the driving gear 15 to rotate, and the meshing of the driving gear 15 and the second gear ring 13 drives the second gear ring 13 to rotate, and the second gear ring 13 is connected to the fixed block 12 and the connecting rod 11, and drives the plurality of first gear rings 10 to rotate, so that the plurality of first gear rings 10 drive the corresponding plurality of driven gears 9 to rotate, and when the driven gear 9 rotates, it drives the rotating shaft 7 to rotate, so that the rotating shaft 7 drives the corresponding stator blade 8 to rotate, thereby adjusting the angle of the stator blade 8; When the meshing of the gear ring and the gear is dull, first unscrew the liquid blocking cover 19, fill the interior of the liquid storage tank 17 with lubricating liquid through the liquid inlet pipe 18, and then start the booster pump 21. Under the action of pressure, the lubricating liquid is transported to the interior of the liquid spraying pipe 22 through the flow pipe 20, and then sprayed out through the liquid spraying head 23 to lubricate the first gear ring 10 and the second gear ring 13 in rotation, so that the first gear ring 10 and the second gear ring 13 are evenly coated under the action of the flow of the lubricating liquid during the rotation process; When the rotating ring 4 drives the rotor blades 5 to rotate and generate vibration, the vibration force is transmitted to the connecting plate 25 through the connection between the inner shell 3 and the central shaft 2, so that the connecting plate 25 moves inside the mounting groove 26, and at the same time, the connecting plate 25 is squeezed onto the sliding tube 31. When the sliding tube 31 drives the corresponding limit ring 32 to slide inside the fixed tube 29, it squeezes the spring 30. The spring 30 is compressed to generate elastic force to rebound, thereby silencing the connection of the connecting plate 25 and reducing noise pollution to a certain extent.

[0029] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An axially adjustable compressor, comprising a casing (1), characterized in that: A central shaft (2) is arranged inside the outer shell (1), one end of the central shaft (2) is fixedly connected to an inner shell (3), the outer portion of the inner shell (3) is rotatably connected to a plurality of rotating rings (4), a plurality of groups of moving blades (5) are arranged outside the inner shell (3), the plurality of groups of moving blades (5) are fixedly connected to the outside of the plurality of rotating rings (4), and an adjustment component is arranged inside the outer shell (1); The adjustment assembly comprises a plurality of groups of connection holes (6), wherein the plurality of groups of connection holes (6) are arranged inside the housing (1), a rotating shaft (7) is rotatably connected inside the connection holes (6), and a stator blade (8) is fixedly connected to one end of the rotating shaft (7).

2. The axially adjustable compressor according to claim 1, characterized in that: The other end of the rotating shaft (7) is fixedly connected to a driven gear (9), and the inner wall of the inner shell (3) is rotatably connected to a plurality of first gear rings (10), the plurality of first gear rings (10) and the plurality of groups of driven gears (9) are meshingly connected, and the inner walls of the plurality of first gear rings (10) are fixedly connected to two connecting rods (11).

3. The axially adjustable compressor according to claim 2, characterized in that: One side of one of the first gear rings (10) is fixedly connected to a plurality of fixed blocks (12), one side of the plurality of fixed blocks (12) is fixedly connected to a second gear ring (13), and the upper surface of the housing (1) is rotatably connected to a rotating rod (14).

4. The axially adjustable compressor according to claim 3, characterized in that: One end of the rotating rod (14) is fixedly connected to a driving gear (15), and the driving gear (15) is meshingly connected to the second gear ring (13). A stepping motor (16) is fixedly mounted on the upper surface of the housing (1), and the other end of the rotating rod (14) is fixedly connected to the output end of the stepping motor (16).

5. The axially adjustable compressor according to claim 1, characterized in that: A lubrication assembly is provided on the lower surface of the housing (1), the lubrication assembly comprising a liquid storage tank (17), the liquid storage tank (17) being fixedly connected to the lower surface of the housing (1), a liquid inlet pipe (18) being connected through one side of the liquid storage tank (17), and a liquid blocking cover (19) being threadedly connected to one end of the liquid inlet pipe (18).

6. The axially adjustable compressor according to claim 5, characterized in that: A circulation pipe (20) is connected through one side of the liquid storage tank (17), a booster pump (21) is installed through the middle of the circulation pipe (20), and the booster pump (21) is fixedly installed on the lower surface of the outer shell (1). A liquid spray pipe (22) is connected through one end of the circulation pipe (20), and one end of the liquid spray pipe (22) is fixedly connected to the inner wall of the inner shell (3). A plurality of liquid spray heads (23) are connected through the lower surface of the liquid spray pipe (22), and a through hole (24) is opened on the lower surface of the outer shell (1).

7. The axially adjustable compressor according to claim 1, characterized in that: One end of the central axis (2) is fixedly connected to two connecting plates (25), and silencer components are respectively arranged on both sides of the inner wall of the outer shell (1), and the silencer components include mounting grooves (26), and the two mounting grooves (26) are respectively opened on both sides of the inner wall of the outer shell (1), and the inner walls of the mounting grooves (26) are fixedly connected to the limit frames (27).

8. The axially adjustable compressor according to claim 7, characterized in that: One side of the connection plate (25) is fixedly connected to a limit plate (28), the limit plate (28) is slidably connected to the inside of the installation groove (26), and the inside of the installation groove (26) is fixedly connected to two fixing tubes (29) and two springs (30).

9. The axially adjustable compressor according to claim 8, characterized in that: The spring (30) is arranged inside the fixed tube (29); one side of the limit plate (28) is fixedly connected to two sliding tubes (31); the outer wall of the sliding tube (31) and the inner wall of the fixed tube (29) are respectively fixedly connected to limit rings (32); the limit rings (32) are made of rubber.

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