A sealing detection device for pressure vessel

Abstract

The present invention relates to the technical field of sealing detection devices, and in particular to a sealing detection device for pressure vessels. A sealing detection device for pressure vessels comprises a bracket, the bracket is fixedly connected to a mounting frame, the mounting frame is fixedly connected to mounting rings evenly distributed along a straight line, the mounting ring is connected to connecting members evenly distributed circumferentially, the side of the connecting member away from the adjacent mounting ring is fixedly connected to a windshield, the bracket is provided with an air pump, the air outlet of the air pump is connected to a hose, the side of the hose away from the air pump is connected to a connecting shell, and the side of the connecting shell away from the hose is connected to a connector. The present invention makes the detection of the sealing of the pressure vessel more convenient by injecting gas into the pressure vessel and blowing the adjacent windshield to rotate at the leaking part of the pressure vessel, and can quickly determine the leaking position of the pressure vessel, which is convenient for further inspection and maintenance of the pressure vessel.

Description

Technical Field

[0001] The invention relates to the technical field of sealing detection devices, and in particular to a sealing detection device for a pressure container. Background Art

[0002] The purpose of pressure vessel sealing test is to ensure that the pressure vessel can maintain good sealing performance under normal working conditions to avoid safety accidents such as leakage or explosion. Some common sealing test methods for small pressure vessels (such as gas tanks, etc.) include water pressure test and gas leak detection method. When testing the pressure vessel with gas leak detection method, gas is injected into the pressure vessel and the gas injection port is sealed, and then the pressure indication number connected to the pressure vessel is observed. After a period of time, the pressure indication number is observed again, and the changes in the two indications are compared to determine whether the pressure vessel is sealed. In the above-mentioned test method, only whether the pressure vessel is sealed can be detected, and the location of the pressure vessel leakage cannot be determined. In addition, waiting is required, resulting in a long time and low efficiency for the test. The water pressure test requires water to be injected into the pressure vessel. Although this method can find out where the pressure vessel is leaking, the water in the pressure vessel needs to be discharged and the pressure vessel needs to be dried after the test is completed, otherwise it will cause the metal pressure vessel to rust. This test method has cumbersome steps and may cause the metal pressure vessel to rust. Summary of the invention

[0003] In order to overcome the shortcomings mentioned in the above background technology, the present invention provides a sealing detection device for a pressure vessel.

[0004] The technical solution of the present invention is: a sealing detection device for a pressure vessel, comprising a bracket, the bracket is fixedly connected to a mounting frame, the mounting frame is fixedly connected to mounting rings evenly distributed along a straight line, the mounting ring is connected to connecting parts evenly distributed circumferentially, the connecting parts are fixedly connected to a windshield plate on a side away from the adjacent mounting ring, the bracket is provided with an air pump, the air outlet of the air pump is connected to a hose, the side of the hose away from the air pump is connected to a connecting shell, and the side of the connecting shell away from the hose is connected to a connecting head.

[0005] More preferably, a groove is provided on the inner side of the wind shield for gathering airflow.

[0006] More preferably, except for the upper side of the remaining mounting rings close to the bracket, there are fixed frames evenly distributed circumferentially, the fixing frames are slidably connected to sliding rods, the sliding rods penetrate the adjacent fixing frames, and the connecting member is fixed with a convex column on one side close to the adjacent sliding rod, and the convex column cooperates with the adjacent sliding rod.

[0007] More preferably, the mounting frame is slidably connected with a transmission rod, the transmission rod passes through the mounting frame and the bracket, the transmission rod is fixedly connected with a limit frame evenly distributed along a straight line, the connecting piece is fixedly connected with a limit block, and the limit blocks evenly distributed circumferentially cooperate with adjacent limit frames.

[0008] More preferably, symmetrically distributed limiting plates are fixedly connected to the outer side of the wind shield plate, and circumferentially uniformly distributed limiting rods are fixedly connected to the limiting frame, and the symmetrically distributed limiting plates are matched with adjacent limiting rods.

[0009] More preferably, the lower side of the limiting rod is lower than the upper side of the adjacent symmetrically distributed limiting plates.

[0010] More preferably, a trigger block is slidably connected to the middle of the bracket, a spring is provided between the trigger block and the bracket, the bracket is rotatably connected to a rotating rod via a hinge seat, and the transmission rod and the trigger block both cooperate with the rotating rod.

[0011] More preferably, a guide ring is fixedly connected to the inner side of the remaining mounting rings except the one far away from the bracket, and an upward inclined surface is arranged on the inner side of the guide ring.

[0012] More preferably, it also includes a fixed shell, which is connected to the connecting head, a first sliding plate is slidably connected in the fixed shell, a connecting rod is fixedly connected to the side of the first sliding plate close to the connecting head, and the connecting rod penetrates the connecting head, a blocking block is slidably connected in the connecting shell, the blocking block is fixed to the connecting rod, a second sliding plate is slidably connected in the fixed shell, and a spring is provided between the second sliding plate and the first sliding plate.

[0013] More preferably, the fixed shell is threadedly connected with a threaded rod, and the threaded rod is rotatably connected to the second sliding plate.

[0014] Beneficial effects of the present invention: The present invention injects gas into the pressure vessel and causes the leaking part of the pressure vessel to blow the adjacent windshield to rotate, thereby making the inspection of the sealing of the pressure vessel more convenient and quickly determining the leaking position of the pressure vessel, which is convenient for subsequent further inspection and maintenance of the pressure vessel.

[0015] By making the sliding rod clamp the adjacent convex columns, the corresponding wind shield plate can still keep the inclined state after the air pump stops injecting air into the pressure container, so it is convenient to mark the air leakage position of the pressure container.

[0016] The limiting frame is made to squeeze the adjacent limiting blocks, so that the adjacent connecting pieces and the parts thereon are restored to a vertical state. At the same time, the limiting rod is used to squeeze the adjacent limiting plates, so that the adjacent windshield plates are rotated and restored to their original positions, so that the device is restored to an initial state.

[0017] By squeezing the pressure vessel to squeeze the trigger block downward, the trigger block drives the limit frame and the limit rod to release the limit on the adjacent limit block and the limit plate respectively. After the pressure vessel is removed, the trigger block is reset under the action of the adjacent spring. At the same time, the trigger block drives the limit frame and the limit rod to move, so that the limit frame and the limit rod reset the adjacent connecting parts and the parts thereon, thereby making the device more convenient for detecting the pressure vessel.

[0018] By utilizing air pressure to adjust the positions of the first sliding plate and the sealing block, it is possible to avoid damage to the pressure vessel due to excessive air pressure in the pressure vessel caused by too fast gas injection speed when the air pressure in the pressure vessel is about to reach the rated air pressure. At the same time, in the event of air leakage in the pressure vessel, the flow rate of the gas entering the pressure vessel through the connecting shell is equal to the flow rate of air leakage in the pressure vessel, thereby maintaining the stability of the air pressure in the pressure vessel and ensuring the accuracy of the detection.

[0019] By adjusting the position of the second sliding plate by using the threaded rod, the initial compression amount of the spring between the second sliding plate and the first sliding plate is adjusted, thereby adjusting the gas pressure when the pressure container is tested. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0021] Figure 2 It is a partial schematic diagram of the three-dimensional structure of the mounting frame and the parts thereon of the present invention;

[0022] Figure 3 It is a partial cross-sectional view of the three-dimensional structure of the mounting ring and the parts thereon of the present invention;

[0023] Figure 4 It is a partial cross-sectional view of the three-dimensional structure of the hose and the parts thereon of the present invention;

[0024] Figure 5 A three-dimensional structural cross-sectional view of the guide ring of the present invention;

[0025] Figure 6 It is a three-dimensional structural schematic diagram of the transmission rod, the trigger block and the rotating rod of the present invention.

[0026] Explanation of the reference numerals: 101-bracket, 102-mounting frame, 103-mounting ring, 104-connecting piece, 105-wind shield, 106-air pump, 107-hose, 108-connecting shell, 109-connecting head, 201-fixed frame, 202-sliding rod, 203-boss, 301-transmission rod, 302-limiting frame, 303-limiting block, 401-limiting plate, 402-limiting rod, 501-trigger block, 502-rotating rod, 6-guide ring, 701-fixed shell, 702-first sliding plate, 703-connecting rod, 704-blocking block, 705-second sliding plate, 8-threaded rod. DETAILED DESCRIPTION

[0027] The embodiments of the present application will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and are not to be construed as limitations on the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application.

[0028] Example 1: A sealing detection device for a pressure vessel, please refer to Figure 1-Figure 5 As shown, a tripod bracket 101 is included. A mounting frame 102 is fixedly connected to the left side of the bracket 101. The mounting frame 102 is fixedly connected to five mounting rings 103 evenly distributed along a straight line. The five mounting rings 103 are all located above the bracket 101. The mounting rings 103 are spherically connected to a plurality of connecting members 104 evenly distributed in the circumferential direction. The connecting member 104 is composed of a sphere and a round rod. The spherical part of the connecting member 104 penetrates the adjacent mounting rings 103. The lower side of the connecting member 104 is fixedly connected to an arc-shaped windshield 105. The windshield 105 is used to mark the leakage position of the pressure vessel. When there is leakage on the side wall of the pressure vessel, the gas leaks out and blows the adjacent The windshield 105 has a groove on the inner side thereof for gathering the airflow, thereby improving the detection range of the device and enabling the windshield 105 to detect a smaller airflow, and preventing the airflow from flowing along the windshield 105 when the airflow blows to the adjacent windshield 105, resulting in the airflow being unable to rotate the windshield 105. An air pump 106 is provided on the right front side of the bracket 101, and the air outlet of the air pump 106 is connected to a hose 107, and the side of the hose 107 away from the air pump 106 is connected to a connecting shell 108, and the lower side of the connecting shell 108 is connected to a connector 109, and the connector 109 is used to connect to the pressure vessel to be detected.

[0029] Please refer to Figure 2 and Figure 3As shown, the upper side of the mounting ring 103 (excluding the mounting ring 103 at the lowermost side) is fixedly connected with a plurality of L-shaped fixing frames 201 uniformly distributed in the circumferential direction, and the horizontal portion of the fixing frame 201 is slidably connected with a sliding rod 202, and the sliding rod 202 is composed of a round rod with a large diameter on the upper side, a frustum in the middle, and a round rod with a small diameter on the lower side. The round rod on the upper side of the sliding rod 202 is used to provide a larger weight, and the round rod on the lower side of the sliding rod 202 is used to make it easier for adjacent bosses 203 to be limited by the sliding rod 202. The sliding rod 202 penetrates the horizontal portion of the adjacent fixing frame 201, and a boss 203 is fixedly connected to the upper side of the connecting member 104, and the boss 203 is limitedly matched with the adjacent sliding rod 202. When the boss 203 rotates with the adjacent connecting member 104 to separate from the adjacent sliding rod 202, the sliding rod 202 clamps the adjacent boss 203, so that the adjacent connecting member 104 and the parts thereon remain in an inclined state.

[0030] Please refer to Figure 2 and Figure 3 As shown, the right side of the mounting frame 102 is slidably connected with a transmission rod 301, and the transmission rod 301 penetrates the mounting frame 102 and the bracket 101. The right side of the transmission rod 301 is fixed with four limit frames 302 evenly distributed along a straight line, and the limit frames 302 are composed of a plurality of circular rings and connecting rods. The four limit frames 302 are all located above the bracket 101. The circular rod portion of the connecting member 104 is fixed with a truncated cone-shaped limit block 303. The diameter of the upper side of the limit block 303 is small, and the diameter of the lower side is large. The limit block 303 is limited and cooperates with the adjacent circular rings on the adjacent limit frames 302. When the limit frame 302 moves downward, the limit block 303 on the connecting member 104 in the inclined state is squeezed to restore the connecting member 104 to the vertical state.

[0031] Please refer to Figure 2 and Figure 3 As shown, two symmetrically distributed limit plates 401 are fixed to the upper part of the outer side of the wind shield 105, and the limit plates 401 are composed of an inclined portion on the upper side and a vertical portion on the lower side. The limit frame 302 is fixed with a plurality of limit rods 402 evenly distributed circumferentially. The two symmetrically distributed limit plates 401 are both limited and cooperated with the adjacent limit rods 402. When the limit frame 302 drives the limit rods 402 thereon to move, the limit rods 402 squeeze the limit plates 401 on the wind shield 105 that are not in the initial state, so that the adjacent wind shield 105 returns to the initial state, and the lower side of the limit rods 402 is lower than the upper side of the adjacent symmetrically distributed limit plates 401, thereby preventing the wind shield 105 from rotating too much so that the adjacent limit rods 402 cannot be between the corresponding two limit plates 401.

[0032] Please refer to Figure 1 and Figure 6As shown, a trigger block 501 is slidably connected to the middle of the bracket 101. The trigger block 501 consists of a disc on the upper side and a round rod on the lower side. A spring is arranged between the lower side of the disc portion of the trigger block 501 and the upper side of the bracket 101. The spring is used to reset the trigger block 501. A rotating rod 502 is rotatably connected to the left side of the bracket 101 through a hinge seat. The transmission rod 301 and the trigger block 501 are both pressed and matched with the rotating rod 502. When the trigger block 501 moves downward, the trigger block 501 squeezes the rotating rod 502 to rotate clockwise, and the rotating rod 502 rotates clockwise to push the transmission rod 301 to move upward.

[0033] Please refer to Figure 5 As shown, a guide ring 6 is fixedly connected to the inner side of the mounting ring 103 (excluding the uppermost mounting ring 103), and an upward inclined surface is arranged on the inner side of the guide ring 6. When the pressure vessel leaks gas at a position between two adjacent upper and lower wind shields 105, the gas is blown toward the adjacent upper wind shield 105 through the guide of the guide ring 6.

[0034] When the device is used to detect the sealing of the side wall of the pressure vessel, the pressure vessel is first placed in the device. During the process of placing the pressure vessel, the pressure vessel moves downward to squeeze the trigger block 501. The trigger block 501 moves downward and compresses the adjacent spring. The trigger block 501 squeezes the right side of the rotating rod 502 to make it rotate clockwise. When the rotating rod 502 rotates clockwise, its left side pushes the transmission rod 301 upward. The transmission rod 301 drives the four limit frames 302 to move upward. The limit frames 302 are initially squeezed and matched with the adjacent limit blocks 303, thereby limiting the adjacent connecting parts 104. The limit rod 402 cooperates with the two adjacent limit plates 401 to limit the adjacent wind shield 105. At this time, the limit frame 302 is separated from the adjacent limit blocks 303, and the limit rod 402 is separated from the two adjacent limit plates 401, thereby releasing the limit on the adjacent connecting parts 104 and the wind shield 105.

[0035] When the pressure vessel is placed, the connector 109 is connected to the air inlet of the pressure vessel, and then the air pump 106 is started. The air pump 106 starts to pump gas into the hose 107, and then the gas enters the connector 109 through the connecting shell 108 and finally enters the pressure vessel. When the side wall of the pressure vessel leaks, the gas blown out of the leaking part of the pressure vessel blows to the adjacent windshield 105. At this time, the windshield 105 is blown by the airflow, and the windshield 105 drives the connecting piece 104 to rotate around the ball joint with the adjacent mounting ring 103. When the connecting piece 104 rotates, the adjacent boss 203 is driven to rotate. The boss 203 rotates to the upper side and separates from the adjacent sliding rod 202. At this time, the sliding rod 202 loses its support and falls under the action of gravity. After the sliding rod 202 falls, it jams the adjacent boss 203, making it impossible for the adjacent connecting piece 104 and the parts thereon to be reset, thereby preventing the wind shield 105 from returning to its original position and failing to be discovered during observation. Then, the leaking part of the pressure vessel is marked as needed to facilitate subsequent re-inspection and repair of the pressure vessel.

[0036] When the pressure vessel is leaking between two adjacent wind shields 105, the gas leaks out and blows toward the guide ring 6 between the two wind shields 105, then flows upward along the guide ring 6, and blows toward the upper wind shield 105. When the gas blows toward the upper wind shield 105, the position of the upper wind shield 105 is blown downward, and when the gas blows toward the lower side of the upper wind shield 105, the gas has a longer lever arm when blowing the upper wind shield 105 and rotates it, and when the gas blows toward the lower wind shield 105, the position of the lower wind shield 105 is blown upward, and the gas has a shorter lever arm when blowing the lower wind shield 105 and rotates it, thereby making it easier for the upper wind shield 105 to rotate and more accurate detection of gas leakage.

[0037] When the detection is completed, the air pump 106 is turned off, and then the connector 109 is separated from the pressure vessel, and then the pressure vessel is taken out of the device. After the pressure vessel is taken out, the trigger block 501 moves upward under the action of the adjacent spring, and the trigger block 501 drives the rotating rod 502 to rotate counterclockwise when it moves upward. When the rotating rod 502 rotates counterclockwise, its left side drives the transmission rod 301 to move downward, and the transmission rod 301 drives the four limit frames 302 to move downward, and the limit frames 302 drive the limit rods 402 thereon to move downward. When the limit frames 302 move downward, they gradually contact with the occurrence The limit block 303 on the deflected connecting member 104 contacts and squeezes the limit block 303, so that the limit block 303 drives the adjacent connecting member 104 and the parts thereon to gradually become a vertical state. At the same time, the limit rod 402 moves downward to squeeze the adjacent limit plate 401, so that the limit plate 401 drives the adjacent connecting member 104 and the parts thereon to rotate around the axis in the vertical direction. When the limit frame 302 moves downward until the upper ring thereof completely contacts the adjacent limit block 303, the limit rod 402 contacts the vertical parts of the two adjacent limit plates 401, and at this time the wind shield 105 returns to its initial state.

[0038] Example 2: Based on Example 1, please refer to Figure 1 and Figure 4 As shown, it also includes a fixed shell 701, which is connected to the left side of the connecting head 109. A first sliding plate 702 is slidably connected in the fixed shell 701. A C-shaped connecting rod 703 is fixedly connected to the right side of the first sliding plate 702. The connecting rod 703 penetrates the right side of the connecting head 109. A blocking block 704 is slidably connected in the connecting shell 108. The blocking block 704 is used to change the cross-section of air circulation in the connecting shell 108, thereby adjusting the speed of injecting gas into the pressure vessel. The blocking block 704 is fixedly connected to the connecting rod 703. A second sliding plate 705 is slidably connected in the fixed shell 701. The second sliding plate 705 is located on the left side of the first sliding plate 702. A spring is arranged between the second sliding plate 705 and the first sliding plate 702, and the spring is used to reset the first sliding plate 702 and the parts thereon.

[0039] Please refer to Figure 1 and Figure 4 As shown, the left side of the fixed shell 701 is threadedly connected with a threaded rod 8, and the threaded rod 8 penetrates the left side of the fixed shell 701. The threaded rod 8 is rotatably connected to the second sliding plate 705. The threaded rod 8 is rotated to adjust the position of the second sliding plate 705, thereby adjusting the initial compression amount of the spring adjacent to the second sliding plate 705, and then adjusting the gas pressure when the pressure vessel is tested.

[0040] When testing the tightness of a pressure vessel, since the rated pressure of the pressure vessel is different when storing gas or liquid, the pressure of the gas injected into the pressure vessel is different during testing, thereby ensuring the accuracy of the test, and some smaller cracks will not leak when the pressure in the pressure vessel is low. Therefore, it is necessary to change the internal pressure of the pressure vessel during testing according to the rated pressure of the pressure vessel. When using the present device to test the pressure vessel, the position of the second sliding plate 705 is adjusted by rotating the threaded rod 8, and the distance between the second sliding plate 705 and the first sliding plate 702 is changed, thereby changing the initial compression of the spring between the two, so that the air pressure pushes the first sliding plate 702 to move the required pressure change, thereby changing the air pressure in the pressure vessel during testing.

[0041] When the air pump 106 is started and gas is injected into the pressure vessel, the air pressure in the hose 107, the connecting shell 108, the connecting head 109 and the pressure vessel gradually increases, and the air pressure in the fixed shell 701 also increases. When the thrust of the air pressure in the fixed shell 701 on the first sliding plate 702 is greater than the elastic force of the adjacent spring, the gas pushes the first sliding plate 702 to drive the connecting rod 703 and the blocking block 704 to move to the left and compress the adjacent spring, so that the connection area between the connecting shell 108 and the connecting head 109 is reduced, thereby reducing the flow rate of gas entering the pressure vessel, avoiding excessive pressure in the pressure vessel caused by excessive gas injection speed. When the pressure vessel is not leaking, the air pressure in the fixed shell 701 increases, and the gas pushes the first sliding plate 702 and the parts thereon to move to the left to the blocking block 704 to close the connecting shell 108 (at this time, the pressure vessel is still in a high-pressure environment, and then the staff turns off the air pump 106). When the pressure vessel leaks, the air pressure in the pressure vessel decreases after the gas leaks, and the pressure of the gas in the pressure vessel on the first sliding plate 702 decreases. Under the action of the spring adjacent to the first sliding plate 702, the first sliding plate 702 and the parts thereon move to the right, making it impossible for the blocking block 704 to completely block the connecting shell 108. Therefore, the blocking block 704 will move to the left until the gas flow through the connecting shell 108 is equal to the flow of gas leakage in the pressure vessel, thereby keeping the air pressure in the pressure vessel constant and improving the detection accuracy. If there is a leak at the top or bottom of the pressure vessel, after turning off the air pump 106, the gas in the pressure vessel gradually leaks, the pressure in the pressure vessel decreases, and the first sliding plate 702 moves to the right under the action of the adjacent spring. The first sliding plate 702 drives the connecting rod 703 to move. By observing the movement of the connecting rod 703 after turning off the air pump 106, it can be judged whether there is a leak at the top or bottom of the pressure vessel.

[0042] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A sealing detection device for a pressure vessel, characterized in that: The invention comprises a bracket (101), wherein the bracket (101) is fixedly connected to a mounting frame (102), wherein the mounting frame (102) is fixedly connected to mounting rings (103) evenly distributed along a straight line, wherein the mounting rings (103) are ball-connected to connecting pieces (104) evenly distributed in the circumferential direction, wherein a side of the connecting piece (104) away from the adjacent mounting ring (103) is fixedly connected to a windshield (105), wherein the bracket (101) is provided with an air pump (106), wherein an air outlet of the air pump (106) is connected to a hose (107), wherein a side of the hose (107) away from the air pump (106) is connected to a connecting shell (108), and a side of the connecting shell (108) away from the hose (107) is connected to a connecting head (109); The upper sides of the remaining mounting rings (103) except those close to the bracket (101) are fixedly connected with circumferentially evenly distributed fixing frames (201), the fixing frames (201) are slidably connected with sliding rods (202), the sliding rods (202) penetrate the adjacent fixing frames (201), and the connecting member (104) is fixedly connected with a convex column (203) on one side close to the adjacent sliding rod (202), and the convex column (203) cooperates with the adjacent sliding rod (202); The mounting frame (102) is slidably connected to a transmission rod (301), the transmission rod (301) penetrates the mounting frame (102) and the bracket (101), the transmission rod (301) is fixedly connected to a limit frame (302) evenly distributed along a straight line, the connecting member (104) is fixedly connected to a limit block (303), the limit blocks (303) evenly distributed in the circumferential direction are all matched with adjacent limit frames (302), and the limit frames (302) squeeze adjacent limit blocks (303), so that the adjacent connecting members (104) and parts thereon are restored to a vertical state; When the pressure vessel is placed, the connector (109) is connected to the air inlet of the pressure vessel, and then the air pump (106) is started. The air pump (106) starts to pump gas into the hose (107). Then, the gas enters the connector (109) through the connecting shell (108) and finally enters the pressure vessel. When a leak occurs on the side wall of the pressure vessel, the gas blown out from the leaking part of the pressure vessel is blown toward the adjacent windshield (105). At this time, the windshield (105) is blown by the airflow. 105) drives the connecting member (104) to rotate around the ball joint between the connecting member (104) and the adjacent mounting ring (103). When the connecting member (104) rotates, the adjacent boss (203) is driven to rotate. The boss (203) rotates to the upper side and separates from the adjacent sliding rod (202). At this time, the sliding rod (202) loses support and falls under the action of gravity. After the sliding rod (202) falls, it blocks the adjacent boss (203), making it impossible for the adjacent connecting member (104) and the parts thereon to be reset.

2. A sealing detection device for a pressure vessel according to claim 1, characterized in that: A groove is provided on the inner side of the wind shield (105) for gathering airflow.

3. A sealing detection device for a pressure vessel according to claim 1, characterized in that: The outer side of the wind deflector (105) is fixedly connected with symmetrically distributed limiting plates (401), the limiting frame (302) is fixedly connected with circumferentially evenly distributed limiting rods (402), and the symmetrically distributed limiting plates (401) are matched with adjacent limiting rods (402).

4. A sealing detection device for a pressure vessel according to claim 3, characterized in that: The lower side of the limiting rod (402) is lower than the upper side of the adjacent symmetrically distributed limiting plates (401).

5. A sealing detection device for a pressure vessel according to claim 1, characterized in that: A trigger block (501) is slidably connected to the middle of the bracket (101), a spring is provided between the trigger block (501) and the bracket (101), the bracket (101) is rotatably connected to a rotating rod (502) via a hinge seat, and the transmission rod (301) and the trigger block (501) both cooperate with the rotating rod (502).

6. A sealing detection device for a pressure vessel according to claim 1, characterized in that: A guide ring (6) is fixedly connected to the inner side of the remaining mounting rings (103) except the part away from the bracket (101), and an upward inclined surface is provided on the inner side of the guide ring (6).

7. A sealing detection device for a pressure vessel according to claim 1, characterized in that: The invention also includes a fixed shell (701), wherein the fixed shell (701) is connected to the connecting head (109), a first sliding plate (702) is slidably connected inside the fixed shell (701), a connecting rod (703) is fixedly connected to a side of the first sliding plate (702) close to the connecting head (109), and the connecting rod (703) passes through the connecting head (109), a blocking block (704) is slidably connected inside the connecting shell (108), and the blocking block (704) is fixedly connected to the connecting rod (703), and a second sliding plate (705) is slidably connected inside the fixed shell (701), and a spring is provided between the second sliding plate (705) and the first sliding plate (702).

8. A sealing detection device for a pressure vessel as claimed in claim 7, characterized in that: The fixed shell (701) is threadedly connected to a threaded rod (8), and the threaded rod (8) is rotatably connected to the second sliding plate (705).

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