Pressure testing device for high-pressure gas cylinder

Abstract

The utility model discloses a pressure testing device for a high-pressure gas cylinder, which comprises a high-pressure tank, a detection pressure relief mechanism, a stable mounting mechanism and a clamping auxiliary mechanism, and is characterized in that the detection pressure relief mechanism comprises a pressure relief adjusting pipe, a rotating button, a supporting bearing, a threaded plate, a pressure spring, a piston, a plugging plate and a lead screw; the stable mounting mechanism comprises a clamping pipe, a clamping rod, an extending groove, a rotating groove, a rotating block, a transverse moving rod, a locking groove and a tension spring, the clamping auxiliary mechanism comprises a connecting plate, a fixed bearing ring, a movable rod, a top block, a supporting spring, a top groove, a rotating sleeve and a slope plate, and through cooperation of a rotating button, a threaded plate and a lead screw, the pressure relief speed and degree can be accurately controlled; the pressure stability and accuracy in the testing process are ensured, the design of the clamping pipe and the clamping rod provides stable support for the high-pressure tank, it is ensured that the device does not shake in the testing process, and the testing accuracy is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure testing, and more particularly to a pressure testing device for a high-pressure gas cylinder. Background Art

[0002] The high-pressure gas cylinder pressure testing device is an important equipment specially used to detect and verify the safety performance of high-pressure gas cylinders. The high-pressure gas cylinder pressure testing device can effectively ensure the quality and safety of high-pressure gas cylinders through rigorous pressure testing. It is not only a key equipment in the production and maintenance process of gas cylinders, but also an important guarantee to ensure the safe use of gas cylinders.

[0003] In the existing technology, firstly, some devices do not have a pressure relief mechanism, which may lead to the inability to effectively release pressure during the test, increasing the risk of gas cylinder explosion or damage, and the inability to accurately control the pressure relief rate, affecting the accuracy of the test results. It can lead to complicated operations when maintaining or adjusting the pressure, increasing maintenance costs and time. Secondly, some devices may cause the device to shake during the test, affecting the accuracy of the test results, and may cause the test device to be damaged in a high-pressure environment, which may lead to complicated operations during installation or disassembly, reducing work efficiency. Finally, some devices may cause the connection between the clamping rod and the high-pressure tank to be loose, affecting the stability and safety of the test, and may lead to complicated operations when the clamping position needs to be adjusted, reducing work efficiency. Utility Model Content

[0004] In response to the problems existing in the prior art, the utility model provides a high-pressure gas cylinder pressure testing device to solve the technical problems mentioned in the background technology, such as the lack of a pressure relief mechanism, which may result in the inability to effectively release pressure during the test and may cause the device to shake during the test.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high-pressure gas cylinder pressure testing device, comprising a high-pressure tank, a pressure relief detection mechanism, a stable mounting mechanism and a clamping auxiliary mechanism, wherein the pressure relief detection mechanism comprises a pressure relief adjusting tube, a rotating knob, a support bearing, a threaded plate, a pressure spring, a piston, a sealing plate and a lead screw, one end of the lead screw extends into the interior of the pressure relief adjusting tube, the threaded plate is directional slidingly arranged in the interior of the pressure relief adjusting tube, the threaded plate is arranged on the lead screw, the support bearing is arranged at one end of the pressure relief adjusting tube, the outer wall of the lead screw is cooperated with the support bearing, the piston and the sealing plate are directional slidingly arranged at one end of the lead screw, and the pressure spring is arranged between the threaded plate and the piston, and the stable mounting mechanism comprises a clamping tube, a clamping rod, an insertion groove, a rotating groove, a rotating block, a transverse rod, a locking groove and a tension spring, the insertion groove and the rotating groove are arranged on the inner wall of the clamping tube, the rotating block is arranged on the side wall of the clamping rod, the rotating block first slides longitudinally in the insertion groove, and then the rotating block rotates and slides in the rotating groove.

[0006] The present invention is further configured as follows: the clamping auxiliary mechanism includes a connecting plate, a fixed bearing ring, a movable rod, a top block, a support spring, a top groove, a rotating sleeve and a ramp plate; the locking groove is arranged on the side of the clamping rod; the transverse rod is arranged for transverse movement on the outer wall of the clamping tube; the tension spring is arranged on the outer wall of the clamping tube and one end of the transverse rod; the fixed bearing ring is arranged on the outer wall of the clamping tube; multiple groups of movable rods are longitudinally movable and extend into the fixed bearing ring; the support spring is arranged between the top block and the fixed bearing ring; the rotating sleeve is directional and rotatable on the outer wall of the clamping tube; multiple groups of top grooves are arranged at the bottom of the rotating sleeve; and the support spring pushes the top block to extend into the top groove step by step, cooperating with the rotating sleeve to support the rotation setting, and the ramp plate is installed on the top end face of the rotating sleeve.

[0007] The utility model is further configured such that a longitudinal movement sleeve is longitudinally movable on the side wall of the clamping tube, and a top plate is installed at the bottom of the longitudinal movement sleeve, and the ramp plate can push the top plate to make the longitudinal movement sleeve move longitudinally. Through the configuration of the longitudinal movement sleeve and the top plate, the longitudinal movement and positioning of the clamping rod are realized, thereby improving the accuracy and stability of the clamping process.

[0008] The utility model is further configured such that an inner push groove is provided on the inner wall of the longitudinal movement sleeve, and the inner push groove can push one end of the transverse movement rod so that the other end of the transverse movement rod extends into the locking groove to prevent the connecting rod from rotating. The design of the inner push groove enables the transverse movement rod to move smoothly and cooperate with the locking groove to prevent accidental rotation of the connecting rod.

[0009] The utility model is further configured such that an insertion tube is installed at the bottom of the pressure relief adjustment tube, and a detection assembly is installed on the side of the insertion tube. The configuration of the insertion tube and the detection assembly enables the test device to directly detect the pressure in the high-pressure gas cylinder, thereby improving the accuracy and reliability of the test.

[0010] The utility model is further configured such that one end of the insertion tube is inserted into the high-pressure tank, and an air outlet pipe is installed on the side of the insertion tube. The air outlet pipe and the insertion tube are connected, and the sealing plate can block the insertion tube. The setting of the air outlet pipe enables the gas in the high-pressure gas cylinder to be discharged smoothly during the test, thereby avoiding excessive pressure accumulation.

[0011] The utility model is further configured as follows: a mounting plate is installed on the side wall of the insertion tube, the connecting plate is fixedly mounted on the mounting plate, one end of the clamping rod cooperates with the top end of the high-pressure tank for positioning and rotation connection, the other end of the clamping rod extends through the mounting plate and cooperates with the clamping tube for quick clamping connection, the setting of the mounting plate and the connecting plate fixes the connection between the clamping rod and the high-pressure tank, and enhances the stability of the overall structure.

[0012] The utility model is further configured such that a fixing plate is fixedly provided on the side wall of the clamping tube, and a reset spring is installed on the bottom of the fixing plate, and the other end of the reset spring is cooperatively connected with the top of the longitudinal displacement sleeve. The setting of the fixing plate and the reset spring ensures the reset function of the clamping auxiliary mechanism during operation, and ensures the accuracy and repeatability of the clamping action.

[0013] Beneficial effects:

[0014] Compared with the prior art, the present invention provides a high-pressure gas cylinder pressure testing device with the following beneficial effects:

[0015] The utility model is provided with a detection pressure relief mechanism. By rotating the knob, the threaded plate and the lead screw, the rate and degree of pressure relief can be accurately controlled to ensure the stability and accuracy of the pressure during the test. The piston and the sealing plate can be opened quickly when needed to safely release the high-pressure gas and prevent the safety risks caused by overpressure.

[0016] The utility model is provided with a stable installation mechanism. The design of the clamping tube and the clamping rod provides stable support for the high-pressure tank, ensuring that the device will not shake during the test, thereby improving the accuracy of the test. The sliding and rotation of the rotating block in the insertion groove and the rotation groove allows the position of the clamping rod to be flexibly adjusted. The setting of the transverse rod and the locking groove can prevent the clamping rod from accidentally rotating under high-pressure conditions, thereby improving the safety of operation.

[0017] The utility model is provided with a clamping auxiliary mechanism. The arrangement of the connecting plate and the fixed bearing ring ensures a firm connection between the clamping rod and the high-pressure tank, thereby enhancing the stability of the overall structure. The cooperation of the movable rod, the top block and the rotating sleeve enables the position of the clamping rod to be precisely adjusted, thereby improving the accuracy and repeatability of the clamping process. The design of the reset spring ensures the automatic reset function of the clamping auxiliary mechanism during operation, thereby ensuring the accuracy and repeatability of the clamping action. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of the device in the present invention when not in use;

[0019] Figure 2 It is a structural diagram of the detection and pressure relief mechanism in the utility model;

[0020] Figure 3 This is a schematic diagram of the internal structure of the pressure relief mechanism in the present invention;

[0021] Figure 4 It is a structural diagram of the stable installation mechanism and the clamping auxiliary mechanism in the present utility model;

[0022] Figure 5This is a schematic diagram of the internal structure of the stable installation mechanism and the clamping auxiliary mechanism in the present invention;

[0023] Figure 6 It is a structural diagram of the stable installation mechanism after operation in the utility model.

[0024] In the figure: 1, high-pressure tank; 2, pressure relief adjustment tube; 3, rotary knob; 4, support bearing; 5, threaded plate; 6, pressure spring; 7, piston; 8, blocking plate; 9, lead screw; 10, clamping tube; 11, clamping rod; 12, inserting groove; 13,

[0025] Rotating slot; 14, rotating block; 15, traverse rod; 16, locking slot; 17, tension spring; 18, connecting plate; 19, fixed bearing ring; 20, movable rod; 21, top block; 22, support spring; 23, top slot; 24, rotating sleeve; 25, ramp plate;

[0026] 26. Longitudinal movement sleeve; 27. Top plate; 28. Inner push groove; 29. Insertion pipe; 30. Detection assembly; 31. Exhaust pipe;

[0027] 32. Mounting plate; 33. Fixing plate; 34. Return spring. DETAILED DESCRIPTION

[0028] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0029] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0030] In the present invention, unless otherwise specified, directions such as "up" and "down" are usually relative to the directions shown in the drawings, or relative to the vertical, perpendicular or gravity direction; similarly, for ease of understanding and description, "left" and "right" are usually relative to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned direction words are not used to limit the present invention.

[0031] See also Figure 1-6, a high-pressure gas cylinder pressure testing device includes a high-pressure tank 1, a pressure relief detection mechanism, a stable installation mechanism and a clamping auxiliary mechanism. The pressure relief detection mechanism includes a pressure relief adjustment tube 2, a rotating knob 3, a support bearing 4, a threaded plate 5, a pressure spring 6, a piston 7, a sealing plate 8 and a screw 9. One end of the screw 9 extends into the interior of the pressure relief adjustment tube 2, the threaded plate 5 is directional and slidingly arranged in the interior of the pressure relief adjustment tube 2, the threaded plate 5 is arranged on the screw 9, the support bearing 4 is arranged at one end of the pressure relief adjustment tube 2, and the outer wall of the screw 9 is matched with the support bearing 4 to form a pressure relief adjustment tube 2. The piston 7 and the sealing plate 8 are directional slidingly arranged at one end of the screw 9, the pressure spring 6 is arranged between the threaded plate 5 and the piston 7, and the stable installation mechanism includes a clamping tube 10, a clamping rod 11, an insertion groove 12, a rotation groove 13, a rotating block 14, a transverse rod 15, a locking groove 16 and a tension spring 17. The insertion groove 12 and the rotation groove 13 are arranged on the inner wall of the clamping tube 10, and the rotating block 14 is arranged on the side wall of the clamping rod 11. The rotating block 14 first slides longitudinally in the insertion groove 12, and then the rotating block 14 rotates and slides in the rotation groove 13.

[0032] In this embodiment, the detection component 30 inserted into the tank detects that the pressure is too high. At this time, the position of the screw 9 is adjusted by rotating the knob 3. The screw 9 cooperates with the threaded plate 5, and the threaded plate 5 slides in the pressure relief adjustment tube 2, thereby adjusting the preload force of the pressure spring 6. The piston 7 and the sealing plate 8 slide at one end of the screw 9. The pressure spring 6 is located between the threaded plate 5 and the piston 7. The compression degree of the pressure spring 6 can be adjusted to control the rate and degree of pressure relief. When pressure relief is required, the pressure spring 6 is relaxed by rotating the screw 9, and the high-pressure gas can be released. The sealing plate 8 is pushed open, thereby allowing the gas to escape from the high-pressure tank 1 through the insertion tube 29 and the outlet pipe 31, thereby realizing the rapid installation and disassembly of the detection pressure relief mechanism and the high-pressure tank 1. The rotating block 14 slides longitudinally in the insertion groove 12, and then rotates and slides in the rotating groove 13, fixing the clamping rod 11 relatively in the clamping tube 10. The transverse rod 15 is laterally movably arranged on the outer wall of the clamping tube 10. The tension spring 17 is arranged on the outer wall of the clamping tube 10 and one end of the transverse rod 15. The tension spring 17 pulls the transverse rod 15 away from the locking groove 16.

[0033] The clamping auxiliary mechanism includes a connecting plate 18, a fixed bearing ring 19, a movable rod 20, a top block 21, a support spring 22, a top groove 23, a rotating sleeve 24 and a ramp plate 25. The locking groove 16 is arranged on the side of the clamping rod 11, the transverse rod 15 is arranged on the outer wall of the clamping tube 10 for transverse movement, the tension spring 17 is arranged on the outer wall of the clamping tube 10 and one end of the transverse rod 15, the fixed bearing ring 19 is arranged on the outer wall of the clamping tube 10, multiple groups of movable rods 20 are longitudinally movable and extend into the fixed bearing ring 19, the support spring 22 is arranged between the top block 21 and the fixed bearing ring 19, the rotating sleeve 24 is directional and rotatable on the outer wall of the clamping tube 10, multiple groups of top grooves 23 are arranged at the bottom of the rotating sleeve 24, and the support spring 22 pushes the top block 21 to extend into the top groove 23 step by step, cooperates with the rotating sleeve 24 to support the rotation setting, and the ramp plate 25 is installed on the top end face of the rotating sleeve 24.

[0034] In this embodiment, the movable rod 20 is longitudinally movable and extends into the fixed bearing ring 19. The support spring 22 is arranged between the top block 21 and the fixed bearing ring 19. The rotating sleeve 24 is directional and rotatable on the outer wall of the clamping tube 10. The support spring 22 pushes the top block 21 to extend into the top groove 23 step by step, and cooperates with the rotating sleeve 24 to support the rotation setting. The ramp plate 25 is installed on the top end surface of the rotating sleeve 24. At this time, the rotating sleeve 24 is rotated so that the ramp plate 25 can push the top plate 27 to move the longitudinal sleeve 26 longitudinally. The inner push groove 28 pushes one end of the transverse rod 15 to make the other end of the transverse rod 15 extend into the locking groove 16 to prevent the clamping rod 11 from rotating and increase the stability of the clamping.

[0035] See also Figure 1-6 As a supplementary implementation method of the high-pressure gas cylinder pressure testing device for detecting the pressure relief mechanism, the stable installation mechanism and the clamping auxiliary mechanism: a longitudinal movement sleeve 26 is longitudinally movably provided on the side wall of the clamping tube 10, and a top plate 27 is installed at the bottom of the longitudinal movement sleeve 26, and the ramp plate 25 can push the top plate 27 to make the longitudinal movement sleeve 26 move longitudinally, an inner push groove 28 is opened on the inner wall of the longitudinal movement sleeve 26, and the inner push groove 28 can push one end of the transverse rod 15 to make the other end of the transverse rod 15 extend into the locking groove 16 to prevent the clamping rod 11 from rotating, an insertion tube 29 is installed at the bottom of the pressure relief adjustment tube 2, and a detection component 30 is installed on the side of the insertion tube 29, and the insertion tube 29 is provided with a detection component 30. One end of the insertion tube 29 extends into the high-pressure tank 1, and an air outlet pipe 31 is installed on the side of the insertion tube 29. The air outlet pipe 31 and the insertion tube 29 are connected, and the sealing plate 8 can block the insertion tube 29. A mounting plate 32 is installed on the side wall of the insertion tube 29, and the connecting plate 18 is fixedly installed on the mounting plate 32. One end of the clamping rod 11 is positioned and rotated with the top end of the high-pressure tank 1. The other end of the clamping rod 11 extends through the mounting plate 32 and is quickly clamped with the clamping tube 10. A fixing plate 33 is fixed on the side wall of the clamping tube 10, and a return spring 34 is installed at the bottom of the fixing plate 33, and the other end of the return spring 34 is connected with the top of the longitudinal sleeve 26.

[0036] More specifically, the detection pressure relief mechanism is installed on the high-pressure tank 1, the insertion tube 29 is inserted into the high-pressure tank 1, and is connected to the high-pressure tank 1 through the air outlet pipe 31. The detection pressure relief mechanism and the high-pressure tank 1 are quickly installed and disassembled through the stable installation mechanism, the clamping rod 11 is connected to the clamping tube 10, and locked by the rotating block 14, and the clamping auxiliary mechanism is used to fix the clamping rod 11 in the clamping tube 10 through the support of the rotating sleeve 24 and the top block 21, and the cooperation of the longitudinal sleeve 26 and the transverse rod 15 to prevent it from rotating. When the pressure of the high-pressure gas cylinder needs to be tested, the pressure test is performed through the detection pressure relief mechanism, and the gas is released through the insertion tube 29 and the air outlet pipe 31. When the detection pressure relief mechanism needs to be maintained, the mechanism can be quickly disassembled and reinstalled by operating the stable installation mechanism and the clamping auxiliary mechanism.

[0037] In summary, when the overall equipment is in use or running: when it is necessary to detect the operation of the pressure relief mechanism, the detection component 30 inserted into the tank detects that the pressure is too high. At this time, the position of the screw 9 is adjusted by turning the knob 3. The screw 9 cooperates with the threaded plate 5, and the threaded plate 5 slides in the pressure relief adjustment tube 2, thereby adjusting the preload force of the pressure spring 6. The piston 7 and the sealing plate 8 slide at one end of the screw 9. The pressure spring 6 is located between the threaded plate 5 and the piston 7. Adjusting the compression degree of the pressure spring 6 can control the rate and degree of pressure relief. When pressure relief is required, the pressure spring 6 is relaxed by turning the screw 9, and the high-pressure gas can push open the sealing plate 8, thereby allowing the gas to escape from the high-pressure tank 1 through the insertion tube 29 and the outlet pipe 31.

[0038] When the operation of the installation mechanism needs to be stabilized, the detection pressure relief mechanism and the high-pressure tank 1 can be quickly installed and disassembled. The rotating block 14 slides longitudinally in the insertion groove 12, and then rotates and slides in the rotating groove 13 to relatively fix the clamping rod 11 in the clamping tube 10. The transverse rod 15 is laterally movably arranged on the outer wall of the clamping tube 10. The tension spring 17 is arranged on the outer wall of the clamping tube 10 and one end of the transverse rod 15. The tension spring 17 pulls the transverse rod 15 away from the locking groove 16.

[0039] When the operation of the clamping auxiliary mechanism is required, the movable rod 20 moves longitudinally and extends into the fixed bearing ring 19, the support spring 22 is set between the top block 21 and the fixed bearing ring 19, and the rotating sleeve 24 is directional and rotated on the outer wall of the clamping tube 10. The support spring 22 pushes the top block 21 to extend into the top groove 23 step by step, and cooperates with the rotating sleeve 24 to support the rotation setting. The ramp plate 25 is installed on the top end face of the rotating sleeve 24. At this time, the rotating sleeve 24 is rotated so that the ramp plate 25 can push the top plate 27 to move the longitudinal sleeve 26 longitudinally, and the inner push groove 28 pushes one end of the transverse rod 15 to make the other end of the transverse rod 15 extend into the locking groove 16 to prevent the clamping rod 11 from rotating and increase the stability of the clamping.

[0040] The detection pressure relief mechanism is installed on the high-pressure tank 1, and the insertion tube 29 is inserted into the high-pressure tank 1 and connected to the high-pressure tank 1 through the air outlet pipe 31. The detection pressure relief mechanism and the high-pressure tank 1 are quickly installed and disassembled through the stable installation mechanism. The clamping rod 11 is connected to the clamping tube 10 and locked by the rotating block 14. The clamping auxiliary mechanism is used to fix the clamping rod 11 in the clamping tube 10 through the support of the rotating sleeve 24 and the top block 21, and the cooperation of the longitudinal sleeve 26 and the transverse rod 15 to prevent it from rotating. When the pressure of the high-pressure gas cylinder needs to be tested, the pressure test is performed through the detection pressure relief mechanism, and the gas is discharged through the insertion tube 29 and the air outlet pipe 31. When the detection pressure relief mechanism needs to be maintained, the mechanism can be quickly disassembled and reinstalled by operating the stable installation mechanism and the clamping auxiliary mechanism.

[0041] In all the schemes mentioned above, the connection between the two components can be selected according to actual conditions by welding, bolt and nut connection, bolt or screw connection or other well-known connection methods, which will not be listed here one by one. In the above, all fixed connections are preferably welded. Although the embodiments of the present invention have been shown and described, it can be understood by ordinary technicians in this field that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A high-pressure gas cylinder pressure testing device, comprising a high-pressure tank (1), a pressure relief detection mechanism, a stabilizing mounting mechanism, and a clamping auxiliary mechanism, wherein: The pressure relief detection mechanism comprises a pressure relief adjustment tube (2), a rotating knob (3), a support bearing (4), a threaded plate (5), a pressure spring (6), a piston (7), a blocking plate (8) and a lead screw (9). One end of the lead screw (9) extends into the interior of the pressure relief adjustment tube (2). The threaded plate (5) is directional and slidingly arranged in the interior of the pressure relief adjustment tube (2). The threaded plate (5) is arranged on the lead screw (9). The support bearing (4) is arranged at one end of the pressure relief adjustment tube (2). The outer wall of the lead screw (9) is matched with the support bearing (4). The piston (7) and the blocking plate (8) are directional and slidingly arranged at one end of the lead screw (9). The invention relates to a swivel mounting mechanism, wherein the pressure spring (6) is arranged between the threaded plate (5) and the piston (7); the swivel mounting mechanism comprises a clamping tube (10), a clamping rod (11), an insertion groove (12), a rotation groove (13), a rotation block (14), a transverse rod (15), a locking groove (16) and a tension spring (17); the insertion groove (12) and the rotation groove (13) are arranged on the inner wall of the clamping tube (10); the rotation block (14) is arranged on the side wall of the clamping rod (11); the rotation block (14) first slides longitudinally in the insertion groove (12), and then rotates and slides in the rotation groove (13).

2. The high-pressure gas cylinder pressure testing device according to claim 1, characterized in that: The clamping auxiliary mechanism comprises a connecting plate (18), a fixed bearing ring (19), a movable rod (20), a top block (21), a support spring (22), a top groove (23), a rotating sleeve (24) and a ramp plate (25); the locking groove (16) is arranged on the side of the clamping rod (11); the transverse rod (15) is arranged on the outer wall of the clamping tube (10) for transverse movement; the tension spring (17) is arranged on the outer wall of the clamping tube (10) and one end of the transverse rod (15); the fixed bearing ring (19) is arranged on the outer wall of the clamping tube (10); On the outer wall, multiple groups of movable rods (20) are longitudinally movable and extend into the fixed bearing ring (19), a support spring (22) is arranged between the top block (21) and the fixed bearing ring (19), a rotating sleeve (24) is directional and rotatable and arranged on the outer wall of the clamping tube (10), multiple groups of top grooves (23) are arranged at the bottom of the rotating sleeve (24), and the support spring (22) pushes the top block (21) to extend into the top groove (23) step by step, cooperates with the rotating sleeve (24) to support the rotation setting, and the ramp plate (25) is installed on the top end surface of the rotating sleeve (24).

3. The high-pressure gas cylinder pressure testing device according to claim 1, characterized in that: A longitudinal moving sleeve (26) is longitudinally movable on the side wall of the clamping tube (10), and a top plate (27) is installed on the bottom of the longitudinal moving sleeve (26). The ramp plate (25) can push the top plate (27) to make the longitudinal moving sleeve (26) move longitudinally.

4. The high-pressure gas cylinder pressure testing device according to claim 3, characterized in that: An inner push groove (28) is provided on the inner wall of the longitudinal shift sleeve (26), and the inner push groove (28) can push one end of the transverse shift rod (15), so that the other end of the transverse shift rod (15) extends into the locking groove (16) to prevent the clamping rod (11) from rotating.

5. The high-pressure gas cylinder pressure testing device according to claim 1, characterized in that: An insertion pipe (29) is installed at the bottom of the pressure relief adjustment pipe (2), and a detection component (30) is installed on the side of the insertion pipe (29).

6. The high-pressure gas cylinder pressure testing device according to claim 5, characterized in that: One end of the insertion pipe (29) is inserted into the high-pressure tank (1), and an air outlet pipe (31) is installed on the side of the insertion pipe (29). The air outlet pipe (31) and the insertion pipe (29) are connected, and the blocking plate (8) can block the insertion pipe (29).

7. The high-pressure gas cylinder pressure testing device according to claim 5, characterized in that: A mounting plate (32) is installed on the side wall of the insertion tube (29), and the connecting plate (18) is fixedly installed on the mounting plate (32). One end of the clamping rod (11) is positioned and rotatably connected with the top end of the high-pressure tank (1), and the other end of the clamping rod (11) extends through the mounting plate (32) and is quickly clamped with the clamping tube (10).

8. The high-pressure gas cylinder pressure testing device according to claim 1, characterized in that: A fixing plate (33) is fixed on the side wall of the clamping tube (10), and a reset spring (34) is installed on the bottom of the fixing plate (33), and the other end of the reset spring (34) is matched and connected with the top of the longitudinal sleeve (26).

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