Sealing test device based on pressure vessel service life evaluation

Abstract

The utility model belongs to the technical field of pressure vessel detection, and particularly relates to a sealing performance test device based on pressure vessel service life evaluation, which comprises an equipment body, an L-shaped mounting plate is fixedly mounted on the rear side of the top of the equipment body, and a round pipe is slidably arranged in the middle of the top side of the L-shaped mounting plate in a penetrating manner. The sealing gasket is used as a primary sealing layer to directly contact with the opening of the pressure container, and the air bag is inflated and expanded through the vent groove in the connecting sleeve and is in gapless fit with the inner wall of the container, so that the problem of leakage caused by deformation or uneven contact of a single sealing layer is solved, and the sealing tightness is remarkably improved; the water pump conveys high-pressure water into the pressure container through the first electromagnetic valve and injects the high-pressure water into the pressure container through the round pipe and the connecting sleeve to achieve water tightness detection, or the air pump inflates the interior of the container through the air inlet pipe and the fourth electromagnetic valve, the cylinder is connected with the water conveying pipe through the second electromagnetic valve, water seal is formed towards the exterior of the container, and air tightness detection is achieved.

Description

Technical Field

[0001] This utility model relates to the field of pressure vessel testing technology, specifically a sealing test device based on pressure vessel life assessment. Background Technology

[0002] Pressure vessels are sealed devices that hold gases or liquids and bear a certain pressure. Pressure vessels play a significant role in modern industry and have high safety requirements. After the production and processing of pressure vessels, it is necessary to test their sealing performance under specific pressure and environmental conditions to evaluate whether the sealing performance of the pressure vessel meets the design requirements and to predict the trend of its sealing performance changes during long-term operation, thus providing an important basis for the life assessment of pressure vessels.

[0003] Existing testing equipment cannot guarantee that the opening of the pressure vessel is sealed at the same time while meeting the requirements of rapid testing. Inaccurate test results are easily caused by poor sealing, which greatly affects the accurate assessment of the pressure vessel's life. To address this, we propose a sealing test device based on pressure vessel life assessment. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a sealing test device based on pressure vessel life assessment. The device uses a sealing gasket as a preliminary sealing layer that directly contacts the pressure vessel opening. The air bladder inflates through the venting groove inside the connecting sleeve, forming a gapless fit with the inner wall of the vessel. This avoids the problem of leakage caused by deformation or uneven contact of a single sealing layer, significantly improving the sealing tightness and solving the problems mentioned above.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a sealing test device based on pressure vessel life assessment, comprising a device body, an L-shaped mounting plate fixedly installed on the top rear side of the device body, a circular tube slidably passing through the middle of the top side of the L-shaped mounting plate, a lifting plate fixedly connected to the top of the circular tube, a lifting assembly for driving the lifting plate to rise and fall installed on the top of the L-shaped mounting plate, a water channel opened inside the lifting plate, the top input end of the circular tube communicating with the water channel, a fixed cylinder fixedly connected to the middle of the top side of the device body, a pressure vessel disposed inside the fixed cylinder, a fixed assembly installed between the circular cylinder and the pressure vessel, and a sealing assembly installed at the bottom of the circular tube; the sealing assembly includes a connecting sleeve, the connecting sleeve fixedly sleeved on the bottom outer surface of the circular tube, a connecting plate fixedly sleeved on the outer surface of the connecting sleeve, a sealing gasket fixedly connected to the bottom of the connecting plate, a venting groove opened inside the connecting sleeve, an air bladder fixedly connected to the bottom of the connecting sleeve, and the air bladder communicating with the venting groove.

[0006] Preferably, the lifting assembly includes a mounting frame, which is fixedly connected to the top rear side of the L-shaped mounting plate. A screw is rotatably threaded between the upper and lower sides of the mounting frame. A drive motor is fixedly mounted on the top of the mounting frame. The output shaft end of the drive motor is fixedly connected to the top end of the screw. The rear part of the lifting plate is threaded onto the screw. Limiting rods are fixedly connected to the left and right sides of the top of the connecting plate. The limiting rods slide through the L-shaped mounting plate.

[0007] Preferably, the fixing assembly includes a fixing plate, which is fixedly connected to the inner wall of the fixing cylinder. The fixing plate has four sets of sliding grooves extending through it. A rotating plate is provided on the bottom side of the fixing plate, and a rotating rod is fixedly connected to the bottom side of the rotating plate. The rotating rod rotatably passes through the top of the equipment body. A driving mechanism for driving the rotating rod to rotate is installed inside the equipment body. Several arc-shaped grooves are extended through the rotating plate, and a sliding rod is movably passed through each of the four sets of arc-shaped grooves. A slider is fixedly connected to the top of the slider, and the slider is slidably connected to the sliding groove. A fixing block is fixedly connected to the top of the slider, and the side of the four sets of fixing blocks closest to the pressure vessel abuts against the outer surface of the pressure vessel.

[0008] Preferably, the drive mechanism includes a second drive motor, which is fixedly installed on the inner top side of the equipment body. A worm gear is also rotatably installed on the inner top side of the equipment body. The output shaft end of the second drive motor is fixedly connected to the right end of the worm gear. A worm wheel is fixedly sleeved on the bottom end of the rotating rod, and the worm gear meshes with the worm wheel.

[0009] Preferably, a water pump is fixedly installed on the bottom right side of the device body, the output end of the water pump is fixedly connected to a water supply pipe, the output end of the water supply pipe is fixedly connected to a solenoid valve, and the output end of the solenoid valve is fixedly connected to the other end of the water channel.

[0010] Preferably, an air pump is also fixedly installed on the bottom right side of the device body. The output end of the air pump is fixedly connected to an air supply pipe. The output end of the air supply pipe is fixedly connected to a solenoid valve five. The output end of the solenoid valve five is fixedly connected to an air vent through a pipe. An air inlet pipe is also fixedly connected to the outer surface of the circular pipe. The input end of the air inlet pipe is fixedly connected to a solenoid valve four. The input end of the solenoid valve four is fixedly connected to the air supply pipe through a pipe.

[0011] Preferably, a cylinder is fixedly connected to the top of the device body. The cylinder is sleeved on the outside of the pressure vessel. A water inlet pipe is fixedly connected to the top right side of the cylinder. A solenoid valve two is fixedly connected to the input end of the water inlet pipe. The input end of the solenoid valve two is fixedly connected to the water supply pipe through a pipeline.

[0012] Preferably, a drain outlet is provided through the top of the device body, and a solenoid valve three is fixedly connected to the bottom end of the drain outlet. The output end of the solenoid valve three is fixedly connected to a drain pipe.

[0013] Preferably, a controller is installed on the left side of the device body.

[0014] Preferably, the device body is equipped with casters at the four corners of its bottom.

[0015] This invention provides a sealing performance testing device based on pressure vessel life assessment. Compared with the prior art, it has the following advantages:

[0016] 1. This sealing test device based on pressure vessel life assessment uses a sealing gasket as a preliminary sealing layer to directly contact the pressure vessel opening, and the airbag is inflated through the venting groove inside the connecting sleeve to form a gapless fit with the inner wall of the container, avoiding the problem of leakage caused by deformation or uneven contact of a single sealing layer, and significantly improving the sealing tightness.

[0017] 2. A sealing test device based on pressure vessel life assessment, wherein a water pump delivers high-pressure water to a water tank through a solenoid valve, and injects it into the pressure vessel through a circular pipe and connecting sleeve to achieve water tightness testing; or an air pump inflates the vessel through an air inlet pipe and a solenoid valve, and a cylinder is connected to a water supply pipe through a solenoid valve to form a water seal to the outside of the vessel to achieve air tightness testing.

[0018] 2. This is a sealing test device based on pressure vessel life assessment. The four sets of sliding grooves on the fixed plate cooperate with the arc grooves of the rotating plate. The sliding rod drives the slider to move along the sliding grooves, which in turn drives the four sets of fixed blocks to be distributed arc-shaped along the outer wall of the container. When the drive motor 2 meshes with the worm gear and worm wheel, it precisely controls the rotation angle of the rotating rod, thereby adjusting the position of the rotating plate and the fixed blocks to adapt to pressure vessels of different diameters or shapes. Attached Figure Description

[0019] Figure 1 This is a front view structural diagram of the main body of this utility model;

[0020] Figure 2 This is a schematic diagram of the right-side structure of the main body of this utility model;

[0021] Figure 3 This is a schematic diagram of the internal structure of the device body of this utility model;

[0022] Figure 4 This is a schematic diagram of the top structure of the fixed cylinder of this utility model;

[0023] Figure 5 This is a schematic diagram of the fixing component of this utility model;

[0024] Figure 6 This utility model Figure 3 Enlarged schematic diagram of the structure at point B;

[0025] Figure 7 This utility model Figure 2 Enlarged schematic diagram of the structure at point A in the middle.

[0026] In the diagram: 1. Equipment body; 2. L-shaped mounting plate; 3. Mounting frame; 4. Drive motor one; 5. Screw; 6. Lifting plate; 7. Circular pipe; 8. Controller; 9. Casters; 10. Limiting rod; 11. Cylinder; 12. Pressure vessel; 13. Water inlet pipe; 14. Fixed cylinder; 15. Air pump; 16. Water pump; 17. Water supply pipe; 18. Air supply pipe; 19. Solenoid valve one; 20. Solenoid valve two; 1. Sealing gasket; 22. Airbag; 23. Solenoid valve three; 24. Drain pipe; 25. Fixing plate; 26. Slide groove; 27. Fixing block; 28. Rotating plate; 29. ​​Arc groove; 30. Rotating rod; 31. Slider; 32. Slide rod; 33. Drive motor two; 34. Worm gear; 35. Worm wheel; 36. Connecting sleeve; 37. Air inlet pipe; 38. Solenoid valve four; 39. Solenoid valve five; 40. Connecting plate. Detailed Implementation

[0027] The technical solutions of the present utility model 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 utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figure 1-7 This utility model provides a technical solution: a sealing test device based on pressure vessel life assessment, including a device body 1, an L-shaped mounting plate 2 fixedly installed on the top rear side of the device body 1, a circular tube 7 slidably passing through the middle of the top side of the L-shaped mounting plate 2, a lifting plate 6 fixedly connected to the top of the circular tube 7, a lifting assembly for driving the lifting plate 6 to rise and fall installed on the top of the L-shaped mounting plate 2, a water passage groove opened inside the lifting plate 6, the top input end of the circular tube 7 communicating with the water passage groove, a fixed cylinder 14 fixedly connected to the middle of the top side of the device body 1, a pressure vessel 12 disposed inside the fixed cylinder 14, a fixing assembly installed between the circular cylinder 11 and the pressure vessel 12, and a sealing assembly installed at the bottom of the circular tube 7;

[0029] When the sealing test device based on pressure vessel life assessment is in operation, an L-shaped mounting plate 2 is fixedly installed on the top rear side of the device body 1. A circular tube 7 is slidably inserted through the middle of the top side of the L-shaped mounting plate 2. A lifting plate 6 is fixedly connected to the top of the circular tube 7. The lifting component at the top of the L-shaped mounting plate 2 drives the lifting plate 6 to rise and fall. A water channel opened inside the lifting plate 6 is connected to the top input end of the circular tube 7 for water transportation. A fixed cylinder 14 fixedly connected to the middle of the top side of the device body 1 is used to place the pressure vessel 12. The fixing component between the cylinder 11 and the pressure vessel 12 achieves adaptive clamping and fixing of the pressure vessel 12 by dynamically adjusting its position. The sealing component installed at the bottom of the circular tube 7 moves down with the lifting plate 6 and contacts the opening of the pressure vessel 12. Water transported through the water channel is injected into the pressure vessel 12 through the circular tube 7 and the sealing component, and the sealing test is achieved simultaneously.

[0030] The sealing assembly includes a connecting sleeve 36, which is fixedly sleeved on the bottom outer surface of the round tube 7. A connecting plate 40 is fixedly sleeved on the outer surface of the connecting sleeve 36. A sealing gasket 21 is fixedly connected to the bottom of the connecting plate 40. A venting groove is provided inside the connecting sleeve 36. An air bag 22 is fixedly connected to the bottom of the connecting sleeve 36 and communicates with the venting groove.

[0031] When the sealing assembly is in use, it is fixedly sleeved on the bottom outer surface of the round tube 7 by the connecting sleeve 36. The bottom of the connecting plate 40 on the outer surface of the connecting sleeve 36 is fixed with the sealing gasket 21. The sealing gasket 21 contacts the opening of the pressure vessel 12 to form a preliminary seal. The venting groove inside the connecting sleeve 36 is connected to the bottom airbag 22. The venting groove delivers gas, causing the airbag 22 to expand and fit tightly against the inner wall of the pressure vessel 12 to form a secondary seal. During the sealing process, the inflation pressure of the airbag 22 is dynamically adjusted through the venting groove to ensure the tightness of the seal.

[0032] The lifting assembly includes a mounting frame 3, which is fixedly connected to the top rear side of the L-shaped mounting plate 2. A screw 5 is rotatably inserted between the upper and lower sides of the mounting frame 3. A drive motor 4 is fixedly installed on the top of the mounting frame 3. The output shaft end of the drive motor 4 is fixedly connected to the top end of the screw 5. The rear part of the lifting plate 6 is threaded onto the screw 5. Limiting rods 10 are fixedly connected to the top left and right sides of the connecting plate 40. The limiting rods 10 slide through the L-shaped mounting plate 2.

[0033] When the lifting assembly is in use, it is fixed to the top rear side of the L-shaped mounting plate 2 by the mounting frame 3. The drive motor 4 drives the screw 5 to rotate. The screw 5 is threadedly connected to the rear of the lifting plate 6, so that the lifting plate 6 rises and falls along the screw 5. The lifting plate 6 drives the round tube 7 to move synchronously. The limiting rod 10 at the top of the connecting plate 40 slides through the L-shaped mounting plate 2 to ensure vertical stability during the lifting process.

[0034] The fixing assembly includes a fixing plate 25, which is fixedly connected to the inner wall of the fixing cylinder 14. Four sets of sliding grooves 26 are opened through the fixing plate 25. A rotating plate 28 is provided on the bottom side of the fixing plate 25. A rotating rod 30 is fixedly connected to the bottom side of the rotating plate 28. The rotating rod 30 is rotatably inserted through the top of the equipment body 1. A drive mechanism for driving the rotating rod 30 to rotate is installed inside the equipment body 1. Several arc-shaped grooves 29 are opened through the rotating plate 28. A sliding rod 32 is movably inserted through each of the four sets of arc-shaped grooves 29. A slider 31 is fixedly connected to the top of the slider 32. The slider 31 is slidably connected to the sliding groove 26. A fixing block 27 is fixedly connected to the top of the slider 31. The side of the four sets of fixing blocks 27 closest to the pressure vessel 12 abuts against the outer surface of the pressure vessel 12.

[0035] The drive mechanism includes a second drive motor 33, which is fixedly installed on the top inside of the equipment body 1. A worm gear 34 is also rotatably installed on the top inside of the equipment body 1. The output shaft end of the second drive motor 33 is fixedly connected to the right end of the worm gear 34. A worm wheel 35 is fixedly sleeved on the bottom end of the rotating rod 30, and the worm gear 34 meshes with the worm wheel 35.

[0036] When the fixing assembly is in use, the fixing plate 25 is fixed to the inner wall of the fixing cylinder 14, and the four sets of sliding grooves 26 through it provide a guide path for the slider 31. The rotating plate 28 on the bottom side of the fixing plate 25 is rotatably connected to the top of the equipment body 1 through the rotating rod 30 fixed at the bottom. The output shaft of the drive motor 2 33 drives the worm 34 to rotate. The worm 34 meshes with the worm wheel 35 fixedly sleeved at the bottom of the rotating rod 30, driving the rotating rod 30 and the rotating plate 28 to rotate synchronously. When the rotating plate 28 rotates, the arc trajectory of the arc groove 29 forces the slider 32 to slide radially along the sliding groove 26 of the fixing plate 25. The slider 31 fixed at the top of the slider 32 moves accordingly, driving the four sets of fixing blocks 27 at the top to be arc-shaped distributed along the outer wall of the pressure vessel 12. The fixing blocks 27 achieve adaptive clamping and fixing of the container by abutting against the outer surface of the pressure vessel 12.

[0037] A water pump 16 is fixedly installed on the bottom right side of the equipment body 1. The output end of the water pump 16 is fixedly connected to a water supply pipe 17. The output end of the water supply pipe 17 is fixedly connected to a solenoid valve 19. The output end of the solenoid valve 19 is fixedly connected to the other end of the water passage tank. When the water tightness test is started, the water pump 16 pumps water through the water supply pipe 17. After the solenoid valve 19 is opened, the water flows through the water passage tank into the lifting plate 6, and then through the round pipe 7 into the pressure vessel 12 to form internal water pressure.

[0038] An air pump 15 is fixedly installed on the bottom right side of the main body 1. The output end of the air pump 15 is fixedly connected to an air supply pipe 18. The output end of the air supply pipe 18 is fixedly connected to a solenoid valve 39. The output end of the solenoid valve 39 is fixedly connected to a ventilation slot through a pipe. An air inlet pipe 37 is also fixedly connected to the outer surface of the circular pipe 7. The input end of the air inlet pipe 37 is fixedly connected to a solenoid valve 38. The input end of the solenoid valve 38 is fixedly connected to the air supply pipe 18 through a pipe. The gas output by the air pump 15 reaches the solenoid valve 39 through the air supply pipe 18. When the solenoid valve 39 is opened, the gas enters the ventilation slot inside the connecting sleeve 36, driving the airbag 22 to expand and achieve sealing. In the airtightness test, the air supply pipe 18 is connected to the air inlet pipe 37 on the outside of the circular pipe 7 through the solenoid valve 38. When the solenoid valve 38 is opened, the gas is directly injected into the pressure vessel 12.

[0039] A cylinder 11 is fixedly connected to the top of the equipment body 1. The cylinder 11 is sleeved on the outside of the pressure vessel 12. A water inlet pipe 13 is fixedly connected to the top right side of the cylinder 11. A solenoid valve 20 is fixedly connected to the input end of the water inlet pipe 13. The input end of the solenoid valve 20 is fixedly connected to the water supply pipe 17 through a pipe. During the airtightness test, the solenoid valve 20 is activated, and a branch of the water supply pipe 17 injects water into the cylinder 11 through the solenoid valve 20, forming an external water-sealed environment.

[0040] The top of the device body 1 has a through-hole for drainage. The bottom of the drainage hole is fixedly connected to a solenoid valve 23. The output end of the solenoid valve 23 is fixedly connected to a drain pipe 24. When the test is over, the solenoid valve 23 opens and drains the water in the cylinder 11 through the drain pipe 24.

[0041] A controller 8 is installed on the left side of the equipment body 1 to control and adjust the various components of the equipment.

[0042] The bottom four corners of the equipment body 1 are equipped with casters 9 to facilitate the movement of the equipment.

[0043] Working principle: When this sealing test device based on pressure vessel life assessment is working, an L-shaped mounting plate 2 is fixedly installed on the top rear side of the equipment body 1. A circular tube 7 slides through the middle of the top side of the L-shaped mounting plate 2. A lifting plate 6 is fixedly connected to the top of the circular tube 7. Since the mounting frame 3 is fixed to the top rear side of the L-shaped mounting plate 2, the drive motor 4 drives the screw 5 to rotate. The screw 5 is threadedly connected to the rear of the lifting plate 6, so that the lifting plate 6 moves up and down along the screw 5. The lifting plate 6 drives the circular tube 7 to move synchronously. The limiting rod 10 at the top of the connecting plate 40 slides through the L-shaped mounting plate 2 to ensure vertical stability during the lifting process. The fixed cylinder is fixedly connected to the middle of the top side of the equipment body 1. Pressure vessel 12 is placed on 14. When the lifting plate 6 descends, it drives the round pipe 7 to descend. Since the connecting sleeve 36 is fixedly sleeved on the bottom outer surface of the round pipe 7, and the bottom of the connecting plate 40 on the outer surface of the connecting sleeve 36 is fixed with the sealing gasket 21, when the connecting plate 40 contacts the top of the pressure vessel 12, the sealing gasket 21 contacts the opening of the pressure vessel 12 to form a preliminary seal. The ventilation groove inside the connecting sleeve 36 is connected to the bottom air bag 22. The gas output by the air pump 15 reaches the solenoid valve 39 through the air supply pipe 18. When the solenoid valve 39 is opened, the gas enters the ventilation groove inside the connecting sleeve 36, causing the air bag 22 to expand and fit tightly against the inner wall of the pressure vessel 12 to form a secondary seal.

[0044] When the pressure vessel 12 is fixed, it is first placed on the fixed plate 25 fixedly connected to the inner wall of the fixed cylinder 14. The four sets of sliding grooves 26 through the plate provide a guide path for the slider 31. The rotating plate 28 on the bottom side of the fixed plate 25 is rotatably connected to the top of the equipment body 1 through the rotating rod 30 fixed at the bottom. The output shaft of the drive motor 2 33 drives the worm 34 to rotate. The worm 34 meshes with the worm wheel 35 fixedly sleeved at the bottom of the rotating rod 30, driving the rotating rod 30 and the rotating plate 28 to rotate synchronously. When the rotating plate 28 rotates, the arc trajectory of the arc groove 29 forces the slider 32 to slide radially along the sliding groove 26 of the fixed plate 25. The slider 31 fixed at the top of the slider 32 moves accordingly, driving the four sets of fixed blocks 27 at the top to be distributed arcally along the outer wall of the pressure vessel 12. The fixed blocks 27 achieve adaptive clamping and fixing of the container by abutting against the outer surface of the pressure vessel 12.

[0045] When the water tightness test is started, the water pump 16 pumps water through the water supply pipe 17. After the solenoid valve 19 is opened, the water flows through the water channel into the lifting plate 6, and then through the round pipe 7 into the pressure vessel 12 to form internal water pressure. When the air tightness test is started, the solenoid valve 20 is activated, and the branch of the water supply pipe 17 injects water into the cylinder 11 through the solenoid valve 20 to form an external water-tight environment. Then the gas output by the air pump 15 is connected to the air inlet pipe 37 on the outside of the round pipe 7 through the solenoid valve 4 38 on the air supply pipe 18. When the solenoid valve 4 38 is opened, the gas is directly injected into the pressure vessel 12.

[0046] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0047] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sealing test device based on pressure vessel life assessment, comprising a device body (1), characterized in that: An L-shaped mounting plate (2) is fixedly installed on the top rear side of the equipment body (1). A round tube (7) is slidably passed through the middle of the top side of the L-shaped mounting plate (2). A lifting plate (6) is fixedly connected to the top of the round tube (7). A lifting assembly for driving the lifting plate (6) to rise and fall is installed on the top of the L-shaped mounting plate (2). A water channel is opened inside the lifting plate (6). The top input end of the round tube (7) is connected to the water channel. A fixed cylinder (14) is fixedly connected to the middle of the top side of the equipment body (1). A pressure vessel (12) is set inside the fixed cylinder (14). A fixing assembly is installed between the round cylinder (11) and the pressure vessel (12). A sealing assembly is installed at the bottom of the round tube (7). The sealing assembly includes a connecting sleeve (36), which is fixedly sleeved on the bottom outer surface of the round tube (7). A connecting plate (40) is fixedly sleeved on the outer surface of the connecting sleeve (36). A sealing gasket (21) is fixedly connected to the bottom of the connecting plate (40). A ventilation groove is provided inside the connecting sleeve (36). An air bag (22) is fixedly connected to the bottom of the connecting sleeve (36). The air bag (22) communicates with the ventilation groove.

2. The sealing test device based on pressure vessel life assessment according to claim 1, characterized in that: The lifting assembly includes a mounting frame (3), which is fixedly connected to the top rear side of the L-shaped mounting plate (2). A screw (5) is rotatably passed between the upper and lower sides of the mounting frame (3). A drive motor (4) is fixedly installed on the top of the mounting frame (3). The output shaft end of the drive motor (4) is fixedly connected to the top end of the screw (5). The rear part of the lifting plate (6) is threaded onto the screw (5). Limiting rods (10) are fixedly connected to the left and right sides of the top of the connecting plate (40). The limiting rods (10) slide on the L-shaped mounting plate (2).

3. The sealing test device based on pressure vessel life assessment according to claim 1, characterized in that: The fixing assembly includes a fixing plate (25), which is fixedly connected to the inner wall of the fixing cylinder (14). Four sets of sliding grooves (26) are provided through the fixing plate (25). A rotating plate (28) is provided on the bottom side of the fixing plate (25), and a rotating rod (30) is fixedly connected to the bottom side of the rotating plate (28). The rotating rod (30) rotatably passes through the top of the equipment body (1). A device for driving the rotating rod (30) to rotate is installed inside the equipment body (1). The driving mechanism has several arc-shaped grooves (29) through the rotating plate (28). Each of the four sets of arc-shaped grooves (29) has a sliding rod (32) movably passing through it. The top of the sliding rod (32) is fixedly connected to a slider (31). The slider (31) is slidably connected to the slide groove (26). The top of the slider (31) is fixedly connected to a fixing block (27). The side of the four sets of fixing blocks (27) close to the pressure vessel (12) abuts against the outer surface of the pressure vessel (12).

4. The sealing test device based on pressure vessel life assessment according to claim 3, characterized in that: The drive mechanism includes a second drive motor (33), which is fixedly installed on the top side inside the equipment body (1). A worm (34) is also rotatably installed on the top side inside the equipment body (1). The output shaft end of the second drive motor (33) is fixedly connected to the right end of the worm (34). A worm wheel (35) is fixedly sleeved on the bottom end of the rotating rod (30). The worm (34) meshes with the worm wheel (35).

5. The sealing test device based on pressure vessel life assessment according to claim 1, characterized in that: A water pump (16) is fixedly installed on the bottom right side of the equipment body (1). The output end of the water pump (16) is fixedly connected to a water supply pipe (17). The output end of the water supply pipe (17) is fixedly connected to a solenoid valve (19). The output end of the solenoid valve (19) is fixedly connected to the other end of the water tank.

6. The sealing test device based on pressure vessel life assessment according to claim 1, characterized in that: An air pump (15) is fixedly installed on the bottom right side of the device body (1). The output end of the air pump (15) is fixedly connected to an air supply pipe (18). The output end of the air supply pipe (18) is fixedly connected to a solenoid valve five (39). The output end of the solenoid valve five (39) is fixedly connected to the air passage through a pipe. An air inlet pipe (37) is also fixedly connected to the outer surface of the round pipe (7). The input end of the air inlet pipe (37) is fixedly connected to a solenoid valve four (38). The input end of the solenoid valve four (38) is fixedly connected to the air supply pipe (18) through a pipe.

7. A sealing test device based on pressure vessel life assessment according to claim 5, characterized in that: The top of the equipment body (1) is also fixedly connected to a cylinder (11), which is sleeved on the outside of the pressure vessel (12). The top right side of the cylinder (11) is fixedly connected to a water inlet pipe (13), and the input end of the water inlet pipe (13) is fixedly connected to a solenoid valve (20). The input end of the solenoid valve (20) is fixedly connected to the water supply pipe (17) through a pipe.

8. The sealing test device based on pressure vessel life assessment according to claim 1, characterized in that: The top of the device body (1) is provided with a drain outlet, and the bottom end of the drain outlet is fixedly connected to a solenoid valve three (23). The output end of the solenoid valve three (23) is fixedly connected to a drain pipe (24).

9. A sealing test device based on pressure vessel life assessment according to claim 1, characterized in that: A controller (8) is installed on the left side of the device body (1).

10. A sealing test device based on pressure vessel life assessment according to claim 1, characterized in that: The device body (1) is equipped with four wheels (9) at the bottom corners.

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