A test device for compressor packing seal performance test

Abstract

The application discloses a kind of test devices for compressor packing seal performance test, it is related to compressor packing test technical field, including driving equipment, the top left side of the driving equipment is provided with reciprocating piston assembly, the driving equipment is co-provided with test assembly on reciprocating piston assembly, the right side of the top of the driving equipment is provided with moving assembly, the moving assembly is provided with packing bearing assembly, the driving equipment includes workbench and the two guide plates of fixedly arranged in workbench bottom, the side of two the guide plates close each other is all provided with guide slot, the moving assembly includes counterweight seat, the inboard of the counterweight seat is rotatably provided with rotating shaft by ball bearing.The application can be more convenient to carry out the sealing performance test of packing seal after packing seal installation is completed, in addition, after testing is completed, the active output of packing seal can also be realized, while simplifying test process, effectively improve test efficiency.

Description

Technical Field

[0001] This invention relates to the field of compressor packing testing technology, and in particular to a test apparatus for testing the sealing performance of compressor packing. Background Technology

[0002] Compressor packing is a sealing component between the cylinder and piston rod of a reciprocating compressor. It can prevent high-pressure gas from leaking out of the cylinder, reduce media loss, avoid safety hazards and environmental pollution, and prevent crankcase lubricating oil from entering the cylinder, thus preventing the gas from being contaminated by oil. As a core sealing component, compressor packing directly determines the reliability of the unit's operation. When the packing seal fails, it will cause problems such as air leakage, insufficient pressure, a surge in oil consumption, and accelerated wear of components.

[0003] In existing technologies, when conducting actual tests on compressor packings, it is necessary to first install and fix multiple compressor packings to be tested inside the stuffing box, then pass the piston rod through the stuffing box, and finally fix the stuffing box. The preparation process before testing is relatively complicated, which has a significant impact on the testing efficiency of compressor packings.

[0004] Therefore, it is necessary to invent a test device for testing the sealing performance of compressor packings to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a testing device for testing the sealing performance of compressor packing. After the packing seal is installed, the sealing performance of the packing seal can be tested more conveniently. In addition, after the test is completed, the packing seal can be actively output, simplifying the testing process and effectively improving the testing efficiency. This solves the problem mentioned in the background art that the testing process requires installing and fixing multiple compressor packings to be tested inside the stuffing box, then passing the piston rod through the stuffing box, and finally fixing the stuffing box. The preparation process before the test is relatively complicated, which has a significant impact on the testing efficiency of compressor packing.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a test device for testing the sealing performance of compressor packing, comprising a drive device, a reciprocating piston assembly disposed on the top left side of the drive device, a test assembly disposed on both the drive device and the reciprocating piston assembly, a moving assembly disposed on the top right side of the drive device, a packing bearing assembly disposed on the moving assembly, the drive device comprising a worktable and two guide plates fixedly disposed at the bottom of the worktable, each of the two guide plates having a guide groove on the side closest to each other, the moving assembly comprising a counterweight seat, a rotating shaft rotatably disposed on the inner side of the counterweight seat via a ball bearing, gears fixedly sleeved at both ends of the outer side of the rotating shaft, two sliding shafts slidably passing through the bottom right side of the counterweight seat via a linear bearing, a pull plate and a push plate fixedly sleeved sequentially from left to right on the outer side of any one of the counterweight seats, the counterweight seat being located between the pull plate and the push plate and fitting against the right side of the pull plate, an end plate fixedly connected to the right end of both push plates, two connecting beams fixedly disposed on the top left side of the end plate, and racks meshing with adjacent gears fixedly disposed on the bottom left end of both connecting beams.

[0007] Preferably, the driving device further includes a support base fixedly installed at the bottom of the workbench, an clearance groove is provided on the top right side of the workbench, and guide rails fixedly installed on the top of the workbench are provided on the front and rear sides of the clearance groove, and the counterweight is slidably installed on the top of the two guide rails.

[0008] Preferably, a back plate is fixedly installed on the rear side of the top of the workbench, an electric push rod is fixedly installed on the bottom left side of the back plate, the output shaft of the electric push rod extends to the right side of the back plate, and a guide shaft is slidably installed through the top left side of the back plate via a linear bearing. The output shaft of the electric push rod and the right end of the guide shaft are both fixedly connected to the end plate.

[0009] Preferably, the reciprocating piston assembly includes a fixed plate A fixedly disposed on the left side of the top of the worktable, a motor fixedly disposed on the back of the fixed plate A, a rotating disk fixedly sleeved on the front end of the outer side of the output shaft of the motor, and an extension shaft fixedly disposed on the left side of the front of the rotating disk.

[0010] Preferably, a connecting rod is rotatably sleeved on the outer side of the extension shaft via a ball bearing, a connecting seat is fixedly connected to the right end of the connecting rod, and a piston rod is rotatably mounted on the inner side of the connecting seat via a pin.

[0011] Preferably, a fixing plate B, which is fixedly mounted on the top of the worktable, is slidably sleeved on the outer side of the piston rod via a linear bearing, and a sealing pressure plate, which is sleeved on the outer side of the piston rod, is fixedly mounted on the right side of the fixing plate B.

[0012] Preferably, the packing support assembly includes a packing gland fixedly sleeved on the outside of the rotating shaft with its opening facing upward. A hydrogen input pipe connected to a hydrogen tank is fixedly installed through the bottom right side of the packing gland. A pressure gauge and a pressure regulating valve are installed on the hydrogen input pipe.

[0013] Preferably, a top plate is slidably disposed on the inner side of the stuffing box in the vertical direction, and a gas opening is provided on the bottom right side of the top plate for transmitting hydrogen into the hydrogen input pipe. A top rod is fixedly connected to the bottom of the top plate, which slides vertically through the bottom of the stuffing box via a linear bearing and is adapted to the guide groove.

[0014] Preferably, the test assembly includes a solution box fixedly mounted on the top of the support base and a sealing cover fixedly mounted on the left side of the fixing plate B and sleeved on the outside of the piston rod. A transmission tube extending into the solution box is fixedly mounted through the front of the sealing cover, and a one-way valve is provided on the transmission tube.

[0015] Preferably, the solution box contains a 0.01% methylene blue aqueous solution, and a palladium catalyst is added to the methylene blue aqueous solution.

[0016] The technical effects and advantages of this invention are as follows:

[0017] This invention incorporates a movable component. After the packing seal is installed through the top opening of the stuffing gland, the movable component drives the packing support assembly to move to the left. During this process, the movable component first rotates the stuffing gland, facilitating the subsequent insertion of the piston rod and the sealing of the sealing plate. When the test is completed, the movable component drives the packing support assembly to reset, and the piston rod helps to reset the stuffing gland. This allows the stuffing gland to be guided by the drive device during its subsequent rightward movement, thus enabling the output of the packing seal after testing. Compared to existing technologies, this invention allows for more convenient testing of the packing seal's sealing performance after installation. Furthermore, it enables the active output of the packing seal after testing, simplifying the testing process and effectively improving testing efficiency.

[0018] This invention uses a methylene blue aqueous solution for testing. After the test, the methylene blue aqueous solution can be left to stand for a short time and then turn blue again in the presence of oxygen in the air. This eliminates the need for manual intervention and processing, making it convenient for direct use next time and further reducing the difficulty of testing. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a three-dimensional structural diagram of the drive device of the present invention; Figure 3This is a three-dimensional structural diagram of the reciprocating piston assembly of the present invention; Figure 4 This is a three-dimensional structural diagram of the mobile component of the present invention; Figure 5 This is a three-dimensional structural diagram of the filler bearing assembly of the present invention; Figure 6 This is a three-dimensional structural diagram of the test component of the present invention.

[0020] In the diagram: 1. Drive unit; 11. Workbench; 12. Support base; 13. Clearance groove; 14. Guide rail; 15. Back plate; 16. Electric push rod; 17. Guide shaft; 18. Guide plate; 19. Guide groove; 2. Reciprocating piston assembly; 21. Fixed plate A; 22. Motor; 23. Rotary disk; 24. Extension shaft; 25. Connecting rod; 26. Connecting seat; 27. Piston rod; 28. Fixed plate B; 29. ​​Sealing pressure plate; 3. Moving assembly; 31. Counterweight seat; 32. Rotating shaft; 33. Gear; 34. Sliding shaft; 35. Pull plate; 36. Push plate; 37. End plate; 38. Connecting beam; 39. Rack; 4. Packing load-bearing assembly; 41. Packing gland; 42. Hydrogen input pipe; 43. Ejector plate; 44. Ejector rod; 5. Test assembly; 51. Solution box; 52. Sealing cover; 53. Transfer pipe. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. 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 are within the scope of protection of the present invention.

[0022] This invention provides, for example Figures 1-6 The test device shown is used for testing the sealing performance of compressor packing. It includes a drive device 1, a reciprocating piston assembly 2 is arranged on the top left side of the drive device 1, a test assembly 5 is arranged on the drive device 1 and the reciprocating piston assembly 2, a moving assembly 3 is arranged on the top right side of the drive device 1, and a packing support assembly 4 is arranged on the moving assembly 3.

[0023] like Figure 2As shown, the drive device 1 includes a worktable 11 made of 45# steel, which is high in strength, rigidity, and not easily deformed. A support base 12, welded from Q235B carbon steel, is fixedly installed at the bottom of the worktable 11, providing strong load-bearing capacity and good shock absorption to ensure stable operation of the entire machine. A clearance groove 13 is provided on the top right side of the worktable 11 to allow the rotating ejector rod 44 to pass. Guide rails 14, fixed to the top of the worktable 11, are provided on both the front and rear sides of the clearance groove 13. A back plate 15 is fixedly installed on the rear side of the top of the worktable 11. An electric push rod 16 is fixedly installed on the bottom left side of the back plate 15. The output shaft of the electric push rod 16 extends to the right side of the back plate 15. A guide shaft 17 is slidably installed through the top left side of the back plate 15 via a linear bearing. Two guide plates 18 are fixedly installed at the bottom of the worktable 11. Each of the two guide plates 18 has a guide groove 19 that matches the ejector rod 44 on the side closest to each other. The guide groove 19 is used to drive the ejector rod 44 to rise and fall.

[0024] By setting up the above structure, the electric push rod 16 can drive the end plate 37, which is guided by the guide shaft 17, to move to the left or to the right.

[0025] like Figure 3 As shown, the reciprocating piston assembly 2 includes a fixed plate A21 fixedly mounted on the top left side of the worktable 11. A motor 22 is fixedly mounted on the back of the fixed plate A21. A rotating disk 23 is fixedly sleeved on the outer front end of the output shaft of the motor 22. An extension shaft 24 is fixedly mounted on the front left side of the rotating disk 23. A connecting rod 25 is rotatably sleeved on the outer side of the extension shaft 24 via a ball bearing. A connecting seat 26 is fixedly connected to the right end of the connecting rod 25. A piston rod 27 is rotatably mounted on the inner side of the connecting seat 26 via a pin. A fixed plate B28 fixedly mounted on the top of the worktable 11 is slidably sleeved on the outer side of the piston rod 27 via a linear bearing. A sealing pressure plate 29, made of polytetrafluoroethylene, is fixedly mounted on the right side of the fixed plate B28 and sleeved on the outer side of the piston rod 27 to avoid damaging the piston rod 27.

[0026] By setting up the above structure, the motor 22 drives the rotating disk 23 to rotate. When the rotating disk 23 rotates, it drives the extension shaft 24 to rotate. The extension shaft 24 then drives the piston rod 27 to slide back and forth inside the multiple packing seals and stuffing box 41 through the connecting rod 25 and the connecting seat 26, thereby starting the test.

[0027] like Figure 4As shown, the moving component 3 includes a counterweight 31 slidably mounted on the top of two guide rails 14. The counterweight 31 is made of cast iron and has a stable weight, preventing leftward movement when not pushed by the push plate 36. A rotating shaft 32 is rotatably mounted on the inner side of the counterweight 31 via a ball bearing. Gears 33 are fixedly sleeved at both ends of the outer side of the rotating shaft 32. Two sliding shafts 34 are slidably mounted through the bottom right side of the counterweight 31 via a linear bearing. A pull plate 35 and a push plate 36 are fixedly sleeved on the outer side of any one of the counterweight 31 from left to right. The counterweight 31 is located between the pull plate 35 and the push plate 36 and is in contact with the right side of the pull plate 35. The right ends of the two push plates 36 are fixedly connected to an end plate 37 that is fixedly connected to the output shaft of the electric push rod 16 and the guide shaft 17. Two connecting beams 38 are fixedly mounted on the top left side of the end plate 37. A rack 39 that meshes with the adjacent gear 33 is fixedly mounted on the bottom left end of each of the two connecting beams 38.

[0028] By setting up the above structure, when the end plate 37 moves to the left, the end plate 37 drives the sliding shaft 34 and the connecting beam 38 to move to the left synchronously. When the sliding shaft 34 moves to the left, it drives the push plate 36 to move closer to the counterweight seat 31. When the connecting beam 38 moves to the left, it drives the rack 39 to move to the left. When the rack 39 moves to the left, it drives the rotating shaft 32 to rotate through the gear 33. The rotating shaft 32 then drives the stuffing box 41 to rotate counterclockwise until the stuffing box 41 rotates to a horizontal state with the opening facing left. At this time, as the end plate 37 continues to move to the left, the end plate 37 pushes the counterweight seat 31 through the sliding shaft 34 and the push plate 36, thereby causing the counterweight seat 31 to move to the left synchronously along the guide rail 14. When the test is performed... After completion, when the end plate 37 moves to the right, it drives the sliding shaft 34 and the connecting beam 38 to move to the right synchronously. When the connecting beam 38 moves to the right, it drives the rack 39 to move to the right synchronously. At this time, due to the obstruction of the stuffing box 41 by the tested packing seal, the stuffing box 41 cannot rotate under the drive of the rotating shaft 32, and the gear 33 cannot be driven to rotate by the rack 39. Therefore, as the end plate 37 moves to the right continuously, the end plate 37 drives the counterweight 31 to move to the right through the connecting beam 38, the rack 39, the gear 33 and the rotating shaft 32. The counterweight 31 then drives the stuffing box 41 to move to the right synchronously, thereby causing the stuffing box 41 to gradually disengage the packing seal inside from the outside of the piston rod 27.

[0029] like Figure 5 As shown, the packing support assembly 4 includes a packing gland 41 fixedly sleeved on the outside of the rotating shaft 32 with its opening facing upward. A hydrogen input pipe 42, which is connected to a hydrogen tank, is fixedly installed through the bottom right side of the packing gland 41. A pressure gauge and a pressure regulating valve are installed on the hydrogen input pipe 42. An ejector plate 43 is slidably installed on the inner side of the packing gland 41 in the vertical direction. A gas opening for transmitting hydrogen into the hydrogen input pipe 42 is opened on the bottom right side of the ejector plate 43. An ejector rod 44, which slides through the bottom of the packing gland 41 in the vertical direction via a linear bearing, is fixedly connected to the bottom of the ejector plate 43.

[0030] By setting up the above structure, multiple packing seals to be tested can be placed into the inside of the packing gland 41 through the top opening at the start of the test. Then, the packing gland 41 can be moved to the left by the moving component 3 for testing. After the test is completed, the moving component 3 moves the packing gland 41 away from the outside of the piston rod 27 and then rotates the packing gland 41 clockwise to reset it. When the packing gland 41 is rotated to reset, the ejector rod 44 is reset simultaneously. After the packing gland 41 and the ejector rod 44 are reset, the lower part of the ejector rod 44 is located on the left side of the two guide grooves 19. When the counterweight 31 moves the lower part of the hydrogen input pipe 42 into the inside of the two guide grooves 19 through the packing gland 41 and continues to move to the right, the ejector rod 44 moves upward inside the packing gland 41 under the guidance of the guide grooves 19, thereby pushing out the tested packing seal inside the packing gland 41. As the ejector rod 44 moves downward inside the packing gland 41, it is reset.

[0031] like Figure 6 As shown, the test assembly 5 includes a solution box 51 fixedly mounted on the top of the support base 12 and a sealing cover 52 fixedly mounted on the left side of the fixing plate B28 and sleeved on the outside of the piston rod 27. The solution box 51 is made of transparent acrylic material to facilitate observation of the color change. A transmission tube 53 extending into the interior of the solution box 51 is fixedly mounted through the front of the sealing cover 52. A one-way valve is installed on the transmission tube 53. The solution box 51 contains a 0.01% methylene blue aqueous solution with a palladium catalyst added.

[0032] By setting up the above structure, hydrogen gas can enter the sealing cover 52 through the piston rod 27 and the packing seal, and then be input into the solution box 51 through the transmission pipe 53. At this time, the methylene blue aqueous solution inside the solution box 51 turns colorless after contacting the hydrogen gas. The tester can judge whether the sealing performance of the packing seal is qualified by whether the solution box 51 changes color. When the test is completed and no more hydrogen gas is input, the methylene blue aqueous solution inside the solution box 51 turns blue again under the action of oxygen in the air, which is convenient for direct use next time.

[0033] The specific working process of this invention is as follows: In actual use, multiple packing seals to be tested are first placed into the inside of the stuffing box 41 through the top opening of the stuffing box 41. Then, the electric push rod 16 drives the end plate 37, which is guided by the guide shaft 17, to move to the left. At this time, the end plate 37 drives the sliding shaft 34 and the connecting beam 38 to move to the left in sync. When the sliding shaft 34 moves to the left, it drives the push plate 36 to move closer to the counterweight seat 31. When the connecting beam 38 moves to the left, it drives the rack 39 to move to the left. When the rack 39 moves to the left, it drives the rotating shaft 32 to rotate through the gear 33. The rotating shaft 32 then drives the stuffing box 41 to rotate counterclockwise. During the rotation of the stuffing box 41, the ejector rod 44 is driven to rotate synchronously. The lower part of the ejector rod 44, located below the worktable 11, rotates to the top of the worktable 11 through the clearance groove 13. After the stuffing box 41 is rotated 90 degrees counterclockwise to a horizontal position with the opening facing left, the left side of the push plate 36 is in contact with the right side of the counterweight seat 31. At this time, as the end plate 37 continues to move to the left, the end plate 37 pushes the counterweight seat 31 through the sliding shaft 34 and the push plate 36, thereby causing the counterweight seat 31 to move to the left synchronously along the guide rail 14. When the counterweight seat 31 moves to the left, the rotating shaft 32 drives the rotated stuffing box 41 to move to the left synchronously. As the stuffing box 41 moves to the left, the piston rod 27 is inserted into the inside of multiple packing seals through the opening of the stuffing box 41, and then extends out from the right side of the stuffing box 41, causing the electric push rod 16 to stop driving the end plate 37 to move to the left. At this time, the left end of the stuffing box 41 is pressed against the right side of the fixed plate B28, and the sealing pressure plate 29 seals the opening of the stuffing box 41 and presses the multiple packing seals inside the stuffing box 41. The motor 22 drives the rotating disk 23 to rotate. When the rotating disk 23 rotates, it drives the extension shaft 24 to rotate. The extension shaft 24 then drives the piston rod 27 to slide back and forth inside the multiple packing seals and stuffing box 41 through the connecting rod 25 and the connecting seat 26. When the pressure regulating valve is opened, the hydrogen in the hydrogen tank enters the stuffing box 41 through the hydrogen inlet pipe 42. If the packing seal has a poor sealing performance, the hydrogen enters the sealing cover 52 between the piston rod 27 and the packing seal, and then enters the solution box 51 through the transmission pipe 53. The methylene blue aqueous solution inside solution box 51 turns colorless upon contact with hydrogen gas. Testers can determine whether the sealing performance of the packing seal is qualified by checking whether solution box 51 changes color. When hydrogen gas is no longer introduced after the test, the methylene blue aqueous solution inside solution box 51 turns blue again under the action of oxygen in the air, making it convenient for direct use next time. After the test is completed, the motor 22 is stopped, and then the electric push rod 16 drives the end plate 37 to move to the right and reset. When the end plate 37 moves to the right, it drives the sliding shaft 34 and the connecting beam 38 to move to the right synchronously. When the connecting beam 38 moves to the right, it drives the rack 39 to move to the right synchronously. At this time, since the tested packing seal is still sleeved on the outside of the piston rod 27, the stuffing box 41 cannot rotate under the drive of the rotating shaft 32, and the gear 33 cannot be driven to rotate by the rack 39. Therefore, as the end plate 37 moves to the right continuously, the end plate 37 drives the counterweight 31 to move to the right through the connecting beam 38, the rack 39, the gear 33 and the rotating shaft 32. The counterweight 31 then drives the stuffing box 41 to move to the right synchronously, thereby causing the stuffing box 41 to gradually disengage the packing seal inside from the outside of the piston rod 27. After the packing seal is disengaged from the outside of the piston rod 27, as the end plate 37 continues to move to the right, the connecting beam 38 drives the gear 33 to rotate through the rack 39. The gear 33 then drives the stuffing box 41 to rotate clockwise and reset through the rotating shaft 32. When the stuffing box 41 rotates and resets, it drives the ejector rod 44 to reset synchronously. During this process, the end plate 37 drives the pull plate 35 and the push plate 36 to move to the right synchronously through the sliding shaft 34. When the stuffing box 41 rotates to the state where the opening faces upward again, the right side of the pull plate 35 is once again in contact with the left side of the counterweight seat 31, and at the same time, the lower part of the ejector rod 44 is located on the left side of the two guide grooves 19. At this time, as the end plate 37 continues to move to the right, the end plate 37 drives the counterweight 31 to move to the right through the sliding shaft 34 and the pull plate 35. The counterweight 31 then drives the lower part of the hydrogen input pipe 42 to enter the inner side of the two guide grooves 19 through the stuffing box 41. During the subsequent rightward movement of the counterweight 31 and the stuffing box 41, the ejector rod 44 moves upward continuously inside the stuffing box 41 under the guidance of the guide groove 19, thereby pushing out the packing seal after testing inside the stuffing box 41. As the ejector rod 44 moves downward inside the stuffing box 41, it is until it is reset. Once the end plate 37 moves to the right and reaches its initial position, the electric push rod 16 stops moving the end plate 37 to the right.

[0034] Finally, it should be noted that the above description 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 foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A test apparatus for testing the sealing performance of compressor packing, characterized in that: The device includes a drive unit (1), a reciprocating piston assembly (2) on the top left side of the drive unit (1), a test assembly (5) on both the drive unit (1) and the reciprocating piston assembly (2), a moving assembly (3) on the top right side of the drive unit (1), a packing support assembly (4) on the moving assembly (3), a workbench (11) and two guide plates (18) fixedly disposed at the bottom of the workbench (11), guide grooves (19) being provided on the side of the two guide plates (18) closest to each other, and a counterweight (31) on the moving assembly (3), with a rotating shaft (32) rotatably disposed on the inner side of the counterweight (31) via a ball bearing. Gears (33) are fixedly sleeved at both ends of the outer side of the rotating shaft (32). Two sliding shafts (34) are slidably connected through the bottom right side of the counterweight seat (31) via linear bearings. A pull plate (35) and a push plate (36) are fixedly sleeved on the outer side of any one of the counterweight seats (31) from left to right. The counterweight seat (31) is located between the pull plate (35) and the push plate (36) and is in contact with the right side of the pull plate (35). An end plate (37) is fixedly connected to the right end of the two push plates (36). Two connecting beams (38) are fixedly installed on the top left side of the end plate (37). A rack (39) that meshes with the adjacent gear (33) is fixedly installed at the bottom left end of the two connecting beams (38).

2. The test apparatus for testing the sealing performance of compressor packings according to claim 1, characterized in that: The drive device (1) also includes a support base (12) fixedly installed at the bottom of the workbench (11). A clearance groove (13) is provided on the right side of the top of the workbench (11). Guide rails (14) fixedly installed on the top of the workbench (11) are provided on the front and rear sides of the clearance groove (13). The counterweight (31) is slidably installed on the top of the two guide rails (14).

3. The test apparatus for testing the sealing performance of compressor packings according to claim 2, characterized in that: A back plate (15) is fixedly installed on the rear side of the top of the workbench (11). An electric push rod (16) is fixedly installed on the bottom left side of the back plate (15). The output shaft of the electric push rod (16) extends to the right side of the back plate (15). A guide shaft (17) is slidably installed through the top left side of the back plate (15) via a linear bearing. The output shaft of the electric push rod (16) and the right end of the guide shaft (17) are both fixedly connected to the end plate (37).

4. The test apparatus for testing the sealing performance of compressor packings according to claim 3, characterized in that: The reciprocating piston assembly (2) includes a fixed plate A (21) fixedly installed on the top left side of the worktable (11). A motor (22) is fixedly installed on the back of the fixed plate A (21). A rotating disk (23) is fixedly sleeved on the front end of the output shaft of the motor (22). An extension shaft (24) is fixedly installed on the left side of the front of the rotating disk (23).

5. The test apparatus for testing the sealing performance of compressor packings according to claim 4, characterized in that: A connecting rod (25) is rotatably sleeved on the outside of the extension shaft (24) via a ball bearing. A connecting seat (26) is fixedly connected to the right end of the connecting rod (25). A piston rod (27) is rotatably mounted on the inside of the connecting seat (26) via a pin.

6. The test apparatus for testing the sealing performance of compressor packings according to claim 5, characterized in that: The piston rod (27) is slidably sleeved on the outside by a linear bearing and fixedly mounted on the top of the workbench (11). A sealing pressure plate (29) is fixedly mounted on the right side of the fixed plate B (28) and sleeved on the outside of the piston rod (27).

7. The test apparatus for testing the sealing performance of compressor packings according to claim 6, characterized in that: The packing support assembly (4) includes a packing gland (41) fixedly sleeved on the outside of the rotating shaft (32) and with its opening facing upward. A hydrogen input pipe (42) connected to a hydrogen tank is fixedly installed through the bottom right side of the packing gland (41). A pressure gauge and a pressure regulating valve are installed on the hydrogen input pipe (42).

8. The test apparatus for testing the sealing performance of compressor packings according to claim 7, characterized in that: The stuffing box (41) is slidably provided with an ejector plate (43) in the vertical direction on the inner side. The bottom right side of the ejector plate (43) is provided with a gas opening for transmitting hydrogen into the hydrogen input pipe (42). The bottom of the ejector plate (43) is fixedly connected with an ejector rod (44) that slides vertically through the bottom of the stuffing box (41) and is adapted to the guide groove (19).

9. The test apparatus for testing the sealing performance of compressor packings according to claim 8, characterized in that: The test assembly (5) includes a solution box (51) fixedly mounted on the top of the support base (12) and a sealing cover (52) fixedly mounted on the left side of the fixing plate B (28) and sleeved on the outside of the piston rod (27). A transmission tube (53) extending into the solution box (51) is fixedly mounted through the front of the sealing cover (52), and a one-way valve is provided on the transmission tube (53).

10. The test apparatus for testing the sealing performance of compressor packings according to claim 9, characterized in that: The solution box (51) contains a 0.01% methylene blue aqueous solution, and a palladium catalyst is added to the methylene blue aqueous solution.

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