A centrifugal cycle gas compressor leak collection assembly

Abstract

The application provides a centrifugal circulating gas compressor leakage collection assembly, and relates to the field of compressor sealing auxiliary equipment, which comprises a mounting frame, the rear side of the mounting frame is provided with an upper sealing cover and a lower sealing cover, two guide grooves are formed in the rear surface of the mounting frame, and a bidirectional threaded rod is rotationally connected to the inside of each of the two guide grooves. Through the cooperation between the motor, the synchronous wheel, the synchronous belt, the bidirectional threaded rod, the guide block, the upper sealing cover, the lower sealing cover, the first sealing plate, the second sealing plate, the trapezoidal block, the roller, the reset spring, the electric push rod, the pull plate and the L-shaped connecting plate, the application realizes the construction of an automatically openable and closable closed collection cavity on the periphery of the non-driving end of the compressor. After the driving mechanism drives the two sealing covers to close, the connecting mechanism immediately drives the second sealing plate to move towards the middle, and the transmission mechanism synchronously pushes the first sealing plate against the rear surface.

Description

Technical Field

[0001] This utility model relates to the field of compressor sealing auxiliary equipment, and more specifically, to a leakage collection component for a centrifugal circulating gas compressor. Background Technology

[0002] The circulating gas compressor is a key piece of equipment in the petrochemical industry used for pressurizing and circulating process gases. It uses a high-speed rotating impeller to perform work on the gas, maintaining the system's circulating operation. The non-drive end of the compressor is equipped with a shaft end seal structure where a copper body mates with the core, which is used to prevent the internal high-pressure gas from leaking outward along the axial direction. This is an important part to ensure the safe and stable operation of the compressor.

[0003] However, in existing technologies, the sealing scheme for the non-drive end of the circulating gas compressor mainly relies on the mechanical seal structure at the interface between the copper body and the core. Under long-term continuous operation, this sealing method is affected by multiple factors such as high-frequency rotational vibration of the compressor, periodic temperature changes, and media erosion. As a result, irreversible wear and increased clearance will gradually occur on the sealing end face and the bushing fit clearance. Moreover, the sealing gasket of the copper body flange connection surface is also prone to aging and failure under long-term pressure and thermal cycling. When any sealing part fails, the high-pressure process gas will escape outward along the above-mentioned multiple leakage channels. The leaked gas is directly discharged into the atmosphere in an unorganized manner. These process waste gases usually contain flammable, explosive, and toxic components such as hydrogen, carbon monoxide, and hydrocarbons. Direct discharge not only wastes process gas and causes system pressure fluctuations, but more seriously, it will form a flammable gas accumulation area around the equipment. Once it encounters an ignition source, it may cause a fire or explosion. At the same time, the escape of toxic gases also seriously threatens the health of on-site operators and causes environmental pollution. In view of this, we propose a centrifugal circulating gas compressor leakage collection component to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to solve the problem of insufficient sealing in some centrifugal circulating gas compressors.

[0005] To achieve the aforementioned objectives and address the aforementioned problems, this utility model provides a centrifugal circulating gas compressor leakage collection assembly, comprising a mounting frame. An upper sealing cover and a lower sealing cover are provided on the rear side of the mounting frame. Two guide grooves are formed on the rear surface of the mounting frame, and a bidirectional threaded rod is rotatably connected inside each of the two guide grooves. Guide blocks are threaded onto the two opposite threads of the bidirectional threaded rod. Mounting plates are fixedly connected to the surfaces of both the upper and lower sealing covers, and the mounting plates and guide blocks are assembled by bolts. A first sealing plate is provided on the rear side of the upper sealing cover, and second sealing plates are provided on both sides of both the upper and lower sealing covers. A transmission mechanism is provided outside the second sealing plates. A connecting mechanism is provided on the rear surface of the mounting frame, and a driving mechanism is provided on the upper end face of the mounting frame.

[0006] As a preferred technical solution of this application, the drive mechanism includes a motor, which is fixedly mounted on the upper end face of the mounting bracket. The mounting bracket has a cavity, and the upper ends of the two bidirectional threaded rods are rotatably inserted into the cavity. The output shaft of the motor is rotatably inserted into the cavity and fixedly connected to the left bidirectional threaded rod. A synchronous pulley is fixedly sleeved on one end surface of the two bidirectional threaded rods located inside the cavity, and a synchronous belt is sleeved on the outside of the two synchronous pulleys.

[0007] As a preferred technical solution of this application, a plurality of limiting rods are fixedly connected to the rear surface of the upper sealing cover, the first sealing plate is slidably sleeved on the outside of the plurality of limiting rods, and a return spring is fixedly connected between the end of the limiting rod and the rear surface of the first sealing plate, and the return spring is movably sleeved on the outside of the limiting rod.

[0008] As a preferred technical solution of this application, the transmission mechanism includes a trapezoidal block, which is fixedly connected to the rear end face of the second sealing plate, and rollers are embedded and installed on both the left and right sides of the first sealing plate.

[0009] As a preferred technical solution of this application, two first fixing plates are fixedly connected to the rear surface of the mounting bracket. The two first fixing plates are respectively located outside the two second sealing plates. A guide rod is slidably sleeved inside the first fixing plate, and the guide rod is fixedly connected to the second sealing plate.

[0010] As a preferred technical solution of this application, the connecting mechanism includes a second fixing plate, which is fixedly connected to the rear surface of the mounting bracket and located above the upper sealing cover. An electric push rod is fixedly connected to the upper surface of the second fixing plate, and a lifting plate is fixedly connected to the output end of the electric push rod.

[0011] As a preferred technical solution of this application, the connecting mechanism further includes an L-shaped connecting plate, which is fixedly connected to the second sealing plate. A pull plate is hinged to the upper end of the L-shaped connecting plate, and the upper end of the pull plate is hinged to the lifting plate.

[0012] As a preferred technical solution of this application, the rear side of the upper sealing cover is fixedly connected to a connecting pipe that communicates with its interior.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: In the scheme of this application: 1. By coordinating the components such as the motor, synchronous pulley, synchronous belt, bidirectional threaded rod, guide block, upper sealing cover, lower sealing cover, first sealing plate, second sealing plate, trapezoidal block, roller, return spring, electric push rod, pull plate, and L-shaped connecting plate, an automatically opening and closing sealed collection cavity is constructed around the non-drive end of the compressor. After the drive mechanism drives the two sealing covers to close, the connecting mechanism then drives the second sealing plate to move towards the middle, and the transmission mechanism simultaneously pushes the first sealing plate to press against the rear surface, effectively solving the problems of cumbersome and inefficient traditional manual installation of sealing covers. 2. Through the coordination of the connecting pipe, upper sealing cover, lower sealing cover, first sealing plate, second sealing plate, trapezoidal block, roller, guide rod, first fixing plate, etc., a multi-directional full-enclosure of the compressor's non-drive shaft end sealing structure is achieved. Leaked gas is completely confined inside the sealed cavity and guided to the external waste gas treatment system through the connecting pipe. This prevents process gases containing toxic and harmful components such as hydrogen, carbon monoxide, and hydrocarbons from escaping into the on-site atmosphere in an unorganized manner, eliminating the risk of fire and explosion caused by the accumulation of combustible gases and the threat of toxic gases to the health of operators. At the same time, it avoids the waste of process media and system pressure fluctuations. Attached Figure Description

[0014] Figure 1 A schematic diagram of the centrifugal circulating gas compressor leakage collection assembly provided in this application; Figure 2 A schematic diagram of the upper sealing cover in the centrifugal circulating gas compressor leakage collection assembly provided in this application; Figure 3 A cross-sectional schematic diagram of the cavity in the centrifugal circulating gas compressor leakage collection assembly provided in this application; Figure 4 A schematic diagram of the structure of the second sealing plate in the centrifugal circulating gas compressor leakage collection assembly provided in this application.

[0015] The image shows: 1. Mounting bracket; 2. Upper sealing cover; 3. Lower sealing cover; 4. Guide groove; 5. Bidirectional threaded rod; 6. Guide block; 7. Mounting plate; 8. Pull plate; 9. First sealing plate; 10. Second sealing plate; 11. Motor; 12. Cavity; 13. Synchronous pulley; 14. Synchronous belt; 15. Trapezoidal block; 16. Roller; 17. Limiting rod; 18. Return spring; 19. Connecting pipe; 20. First fixing plate; 21. Guide rod; 22. L-shaped connecting plate; 23. Second fixing plate; 24. Electric push rod; 25. Lifting plate. Detailed Implementation

[0016] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0017] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0018] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0019] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0020] Please refer to Figures 1-4 A centrifugal circulating gas compressor leakage collection assembly includes a mounting frame 1. An upper sealing cover 2 and a lower sealing cover 3 are provided on the rear side of the mounting frame 1. Two guide grooves 4 are formed on the rear surface of the mounting frame 1. A bidirectional threaded rod 5 is rotatably connected inside each of the two guide grooves 4. Guide blocks 6 are threaded onto the two opposite threads of the bidirectional threaded rod 5. Mounting plates 7 are fixedly connected to the surfaces of the upper sealing cover 2 and the lower sealing cover 3. The mounting plates 7 and guide blocks 6 are assembled by bolts. A first sealing plate 9 is provided on the rear side of the upper sealing cover 2. Second sealing plates 10 are provided on both sides of the upper sealing cover 2 and the lower sealing cover 3. A transmission mechanism is provided on the outside of the second sealing plates 10. A connecting mechanism is provided on the rear surface of the mounting frame 1, and a driving mechanism is provided on the upper end face of the mounting frame 1.

[0021] Furthermore, such as Figures 1-4 As shown, the drive mechanism includes a motor 11, which is fixedly mounted on the upper end face of the mounting bracket 1. A cavity 12 is provided inside the mounting bracket 1. The upper ends of the two bidirectional threaded rods 5 are rotatably inserted into the cavity 12. The output shaft of the motor 11 is rotatably inserted into the cavity 12 and fixedly connected to the left bidirectional threaded rod 5. A synchronous pulley 13 is fixedly sleeved on the end surface of the two bidirectional threaded rods 5 located inside the cavity 12. A synchronous belt 14 is sleeved on the outside of the two synchronous pulleys 13.

[0022] With this setup, starting the motor 11 via the external controller will drive the rotation of the left bidirectional threaded rod 5. Subsequently, the cooperation between the synchronous pulley 13 and the synchronous belt 14 will enable the two bidirectional threaded rods 5 to rotate synchronously. At the same time, the rotation of the two bidirectional threaded rods 5 will drive the guide block 6 and the two sealing covers to move until the upper sealing cover 2 and the lower sealing cover 3 are closed, thus achieving the sealing of the non-driving end of the compressor.

[0023] Furthermore, such as Figures 1-4 As shown, a number of limiting rods 17 are fixedly connected to the rear surface of the upper sealing cover 2. The first sealing plate 9 is slidably sleeved on the outside of the number of limiting rods 17. A return spring 18 is fixedly connected between the end of the limiting rod 17 and the rear surface of the first sealing plate 9, and the return spring 18 is movably sleeved on the outside of the limiting rod 17.

[0024] With this configuration, when the first sealing plate 9 moves forward, that is, moves closer to the upper sealing cover 2, it will force the return spring 18 to deform, so as to facilitate the subsequent reset of the first sealing plate 9.

[0025] Furthermore, such as Figures 1-4 As shown, the transmission mechanism includes a trapezoidal block 15, which is fixedly connected to the rear end face of the second sealing plate 10. Rollers 16 are embedded on both the left and right sides of the first sealing plate 9.

[0026] With this setup, by utilizing the cooperation between the roller 16 and the inclined surface of the trapezoidal block 15, when the two second sealing plates 10 on both sides approach each other, the inclined surface of the trapezoidal block 15 will contact the first sealing plate 9 through the roller 16. Subsequently, the continuous movement of the second sealing plate 10 will force the first sealing plate 9 to move until the first sealing plate 9 is pressed against the rear surface of the upper sealing cover 2 and the lower sealing cover 3, and the two second sealing plates 10 are in contact with the sides of the upper sealing cover 2 and the lower sealing cover 3, thus finally achieving the sealing of the gap between the upper sealing cover 2 and the lower sealing cover 3.

[0027] Furthermore, such as Figures 1-4As shown, two first fixing plates 20 are fixedly connected to the rear surface of the mounting bracket 1. The two first fixing plates 20 are located on the outer side of the two second sealing plates 10 respectively. A guide rod 21 is slidably sleeved inside the first fixing plate 20. The guide rod 21 is fixedly connected to the second sealing plate 10.

[0028] With this configuration, the cooperation between the first fixing plate 20 and the guide rod 21 can further ensure the stability of the lateral movement of the second sealing plate 10 and avoid deviation.

[0029] Furthermore, such as Figures 1-4 As shown, the connecting mechanism includes a second fixing plate 23, which is fixedly connected to the rear surface of the mounting bracket 1 and located on the upper side of the upper sealing cover 2. An electric push rod 24 is fixedly connected to the upper surface of the second fixing plate 23, and a lifting plate 25 is fixedly connected to the output end of the electric push rod 24.

[0030] With this setup, the lifting plate 25 can be moved up and down by starting the electric push rod 24 via an external controller.

[0031] Furthermore, such as Figures 1-4 As shown, the connecting mechanism also includes an L-shaped connecting plate 22, which is fixedly connected to the second sealing plate 10. A pull plate 8 is hinged to the upper end of the L-shaped connecting plate 22, and the upper end of the pull plate 8 is hinged to the lifting plate 25.

[0032] With this setup, since the length of the pull plate 8 is fixed, when the lifting plate 25 rises, it will pull the L-shaped connecting plate 22 closer to the center, thereby causing the second sealing plate 10 to move closer to the center; when the lifting plate 25 falls, the pull plate 8 will push the L-shaped connecting plate 22 outward, thereby causing the second sealing plate 10 to detach from the two sealing covers.

[0033] Furthermore, such as Figures 1-4 As shown, a connecting pipe 19 that communicates with the interior is fixedly connected to the rear side of the upper sealing cover 2.

[0034] With this configuration, by connecting the connecting pipe 19 to the waste gas recovery and treatment system, it is convenient to collect and treat the waste gas.

[0035] In addition, auxiliary sealing structures such as sealing strips, sealant, fluororubber gaskets or nitrile rubber gaskets can be provided on the splicing surfaces of the upper sealing cover 2, the lower sealing cover 3, the first sealing plate 9, and the second sealing plate 10. The specific materials are selected according to the temperature, pressure and corrosiveness of the medium, which is a conventional method in this field, so it will not be described in detail here.

[0036] The collection component of this application is an external end collection structure. The mounting bracket 1 is fixed to the non-drive end base of the compressor as an independent support. The upper sealing cover 2 and the lower sealing cover 3 are supported by the mounting bracket 1 and suspended outside the non-drive end structure of the compressor. The closed collection cavity completely covers the non-drive end part. The compressor main shaft does not need to pass through the wall of the collection cavity. Therefore, there is no dynamic mating hole for the main shaft to pass through on the wall of the collection cavity.

[0037] For ease of understanding, this application uses the mounting bracket 1 as the orientation reference. The side of the mounting bracket 1 facing the non-drive end base of the compressor is the front side, and the side away from the non-drive end of the compressor is the rear side. The upper sealing cover 2 and the lower sealing cover 3 are located on the rear side of the mounting bracket 1. The first sealing plate 9 is located on the rear side of the upper sealing cover 2, and the second sealing plate 10 is located on the left and right sides of the upper sealing cover 2 and the lower sealing cover 3.

[0038] The usage process of the centrifugal circulating gas compressor leakage collection component provided by this utility model is as follows: In the initial state, the upper sealing cover 2 and the lower sealing cover 3 are open. The first sealing plate 9 maintains a certain distance from the rear surface of the upper sealing cover 2 under the action of the return spring 18. The two second sealing plates 10 are located on the outer sides of the upper sealing cover 2 and the lower sealing cover 3 respectively. During installation, the mounting bracket 1 is fastened to the non-drive end base of the compressor with bolts, so that the upper sealing cover 2 and the lower sealing cover 3 are facing the sealing position of the non-drive end of the compressor, thus completing the fixed installation of the whole device.

[0039] After installation, start motor 11. When motor 11 starts, its output shaft drives the left bidirectional threaded rod 5 to rotate. The left synchronous pulley 13 transmits power to the right synchronous pulley 13 through the synchronous belt 14, thereby driving the right bidirectional threaded rod 5 to rotate synchronously. When the bidirectional threaded rod 5 rotates, due to the limiting effect of the guide groove 4, the two guide blocks 6 on the same bidirectional threaded rod 5 cannot rotate with the threaded rod, but move in opposite directions in a straight line along the direction of the guide groove 4. Therefore, the upper sealing cover 2 and the lower sealing cover 3 move synchronously with the guide blocks 6 and gradually move towards the middle. Finally, the mating edges of the upper sealing cover 2 and the lower sealing cover 3 fit together, completing the initial wrapping of the non-drive end of the compressor.

[0040] After the upper sealing cover 2 and the lower sealing cover 3 are closed, the external controller starts the electric push rod 24. The output end of the electric push rod 24 drives the lifting plate 25 to move upward. Since the length of the pull plate 8 is fixed, when the lifting plate 25 rises, it pulls the L-shaped connecting plates 22 on both sides to move towards the middle through the pull plate 8, thereby driving the two second sealing plates 10 fixedly connected to the L-shaped connecting plate 22 to move towards each other in the horizontal direction.

[0041] As the two second sealing plates 10 move closer to the center, the inclined surface of the trapezoidal block 15 gradually approaches and contacts the roller 16. The roller 16 is forced to roll along the inclined surface by the guiding action of the inclined surface, thereby pushing the first sealing plate 9 to move forward along the axis of the limiting rod 17. When the first sealing plate 9 moves forward, the return spring 18 is compressed and deformed. When the two second sealing plates 10 move to fit tightly against the left and right sides of the upper sealing cover 2 and the lower sealing cover 3, the first sealing plate 9 moves to the rear side of the upper sealing cover 2 and the lower sealing cover 3 and fits tightly against them. At this point, the upper sealing cover 2, the lower sealing cover 3, the first sealing plate 9 and the two second sealing plates 10 together form a sealed collection cavity, which completely covers the shaft end sealing structure of the non-drive end of the compressor.

[0042] After the sealed cavity is formed, the connecting pipe 19 fixedly connected to the rear side of the upper sealing cover 2 is connected to its interior. The end of the connecting pipe 19 is connected to the external waste gas recovery and treatment system. The process gas leaking from the non-drive shaft end sealing structure of the compressor first enters the sealed cavity surrounded by each sealing cover and sealing plate. Since the cavity is completely isolated from the external atmospheric environment, the leaked gas cannot escape into the atmosphere at the site, but accumulates in the cavity and is pumped to the waste gas recovery and treatment system for centralized treatment along the connecting pipe 19, thereby achieving zero emission collection of the leaked gas.

[0043] When the compressor needs maintenance, the electric push rod 24 is reversed, and its output end drives the lifting plate 25 to move downward. The lifting plate 25 pushes the L-shaped connecting plate 22 outward through the pull plate 8, causing the two second sealing plates 10 to disengage from the sides of the upper sealing cover 2 and the lower sealing cover 3. When the second sealing plates 10 move outward, the trapezoidal block 15 retracts, the pressure on the roller 16 is released, the return spring 18 releases its elastic potential energy, and pushes the first sealing plate 9 to slide back along the limit rod 17 to return to its initial state of maintaining a distance from the rear surface of the upper sealing cover 2. Then, the motor 11 is controlled to rotate in the opposite direction by the external controller, and the two bidirectional threaded rods 5 rotate in the opposite direction synchronously. The two guide blocks 6 on the same bidirectional threaded rod 5 move in the opposite direction along the guide groove 4, causing the upper sealing cover 2 and the lower sealing cover 3 to separate from each other.

[0044] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0045] Obviously, the embodiments described above are only some embodiments of this utility model, not all embodiments. The accompanying drawings show preferred embodiments of this utility model, but do not limit the patent scope of this utility model. This utility model can be implemented in many different forms; rather, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this utility model specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the patent protection scope of this utility model.

Claims

1. A leakage collection assembly for a centrifugal circulating gas compressor, characterized in that, The system includes a mounting bracket (1), with an upper sealing cover (2) and a lower sealing cover (3) on the rear side of the mounting bracket (1). Two guide grooves (4) are opened on the rear surface of the mounting bracket (1). Two bidirectional threaded rods (5) are rotatably connected inside the two guide grooves (4). Guide blocks (6) are threadedly fitted at the two opposite threads of the bidirectional threaded rods (5). Mounting plates (7) are fixedly connected to the surfaces of the upper sealing cover (2) and the lower sealing cover (3). The mounting plates (7) and the guide blocks (6) are assembled by bolts. A first sealing plate (9) is provided on the rear side of the upper sealing cover (2). A second sealing plate (10) is provided on both sides of the upper sealing cover (2) and the lower sealing cover (3). A transmission mechanism is provided on the outside of the second sealing plate (10). A connecting mechanism is provided on the rear surface of the mounting bracket (1). A driving mechanism is provided on the upper end surface of the mounting bracket (1).

2. The centrifugal circulating gas compressor leakage collection assembly according to claim 1, characterized in that, The drive mechanism includes a motor (11), which is fixedly mounted on the upper end of the mounting bracket (1). A cavity (12) is provided inside the mounting bracket (1). The upper ends of the two bidirectional threaded rods (5) are rotatably inserted into the cavity (12). The output shaft of the motor (11) is rotatably inserted into the cavity (12) and fixedly connected to the left bidirectional threaded rod (5). A synchronous pulley (13) is fixedly sleeved on one end surface of the two bidirectional threaded rods (5) located inside the cavity (12). A synchronous belt (14) is sleeved on the outside of the two synchronous pulleys (13).

3. A centrifugal circulating gas compressor leakage collection assembly according to claim 2, characterized in that, A plurality of limiting rods (17) are fixedly connected to the rear surface of the upper sealing cover (2). The first sealing plate (9) is slidably sleeved on the outside of the plurality of limiting rods (17). A return spring (18) is fixedly connected between the end of the limiting rod (17) and the rear surface of the first sealing plate (9), and the return spring (18) is movably sleeved on the outside of the limiting rod (17).

4. A centrifugal circulating gas compressor leakage collection assembly according to claim 3, characterized in that, The transmission mechanism includes a trapezoidal block (15), which is fixedly connected to the rear end face of the second sealing plate (10). Rollers (16) are embedded on both the left and right sides of the first sealing plate (9).

5. A centrifugal circulating gas compressor leakage collection assembly according to claim 4, characterized in that, The rear surface of the mounting bracket (1) is fixedly connected to two first fixing plates (20). The two first fixing plates (20) are located on the outside of the two second sealing plates (10). The first fixing plate (20) is slidably fitted with a guide rod (21), and the guide rod (21) is fixedly connected to the second sealing plate (10).

6. A centrifugal circulating gas compressor leakage collection assembly according to claim 5, characterized in that, The connecting mechanism includes a second fixing plate (23), which is fixedly connected to the rear surface of the mounting bracket (1) and located on the upper side of the upper sealing cover (2). An electric push rod (24) is fixedly connected to the upper surface of the second fixing plate (23), and a lifting plate (25) is fixedly connected to the output end of the electric push rod (24).

7. A centrifugal circulating gas compressor leakage collection assembly according to claim 6, characterized in that, The connecting mechanism also includes an L-shaped connecting plate (22), which is fixedly connected to the second sealing plate (10). The upper end of the L-shaped connecting plate (22) is hinged to a pull plate (8), and the upper end of the pull plate (8) is hinged to the lifting plate (25).

8. A centrifugal circulating gas compressor leakage collection assembly according to claim 7, characterized in that, The upper sealing cover (2) is fixedly connected to the rear side by a connecting pipe (19) that communicates with its interior.

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