A rapid nondestructive testing device for pressure vessels

Abstract

The present invention discloses a rapid nondestructive testing device for pressure vessels, including a base, and a cylindrical table rotatably connected to the base for carrying the pressure vessel, a radiation detector is arranged above the base, and a driving component for driving the radiation detector to move back and forth in a vertical direction and driving the cylindrical table to rotate intermittently is arranged above the base. The present invention, by setting a driving component, is convenient for driving the radiation detector to move back and forth in a vertical direction, and at the same time drives the cylindrical table and the pressure vessel to be detected on the cylindrical table to rotate intermittently, so that the pressure vessel can rotate once every time the radiation detector moves up and down, and the pressure vessel can be fully tested; by setting an inflation component, the pressure vessel to be tested can be inflated to facilitate subsequent testing; by setting a positioning component, the leak position on the pressure vessel can be quickly determined.

Description

Technical Field

[0001] The invention relates to the technical field of pressure vessel detection, in particular to a rapid non-destructive detection device for pressure vessels. Background Art

[0002] A pressure vessel is a closed device that contains gas or liquid and bears a certain pressure.

[0003] In actual use, traditional non-destructive testing equipment for pressure vessels often uses X-ray detectors to detect internal damage in pressure vessels. If workers use handheld X-ray detectors to inspect pressure vessels, some parts of the pressure vessels may be missed.

[0004] Therefore, we proposed a rapid nondestructive testing equipment for pressure vessels to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide a rapid non-destructive testing device for pressure vessels, which is equipped with a driving component to drive a radiation detector to move back and forth in a vertical direction, and at the same time drive a cylindrical table and a pressure vessel to be tested on the cylindrical table to rotate intermittently, so that the pressure vessel can rotate once every time the radiation detector moves up and down, which has the advantage of performing all-round testing on the pressure vessel and solves the problem that some parts of the pressure vessel may be missed when the pressure vessel is tested by a staff holding a radiation detector.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a rapid non-destructive testing device for pressure vessels, comprising a base, and a cylindrical table rotatably connected to the base for supporting the pressure vessel, a radiation detector is arranged above the base, and a driving component is arranged above the base for driving the radiation detector to reciprocate in a vertical direction and simultaneously driving the cylindrical table to rotate intermittently.

[0007] Preferably, the driving assembly comprises a column vertically fixed to the upper surface of the base, a rectangular plate is slidingly limited up and down on the surface of the column, the rectangular plate is driven by an external driving device, and the radiation detector is fixedly mounted on the upper surface of the rectangular plate.

[0008] Preferably, an oblique groove is provided on the surface of the rectangular plate away from the column, a support rod is vertically fixed to the upper surface of the base, a U-shaped frame is vertically fixed to the upper end of the support rod, a rectangular slider is slidably connected in the U-shaped frame, a clamping rod is rotatably connected to the inner wall of the rectangular slider, a spring is fixedly connected between the clamping rod and the rectangular slider, a circular slider is fixedly connected to the side of the rectangular slider away from the clamping rod, the circular slider is slidably connected to the oblique groove, and one end of the clamping rod is arc-shaped.

[0009] Preferably, a ratchet wheel coaxially fixed with the cylindrical table is provided above the base, one end of the clamping rod is adapted to the tooth groove of the ratchet wheel, a rod one is vertically fixed to the upper surface of the base, a rod two is telescopically inserted into the upper end of the rod one, the upper end of the rod two is fixedly connected to a limiting block, the surface of the limiting block is provided with an inclined surface matching with the teeth on the ratchet wheel, a spring two is sleeved on the surface of the rod two, one end of the spring two is fixed to the limiting block, and the other end is fixed to the rod one.

[0010] Preferably, a glass cover for covering the pressure vessel to be tested is placed on the ratchet, and an inflation component for inflating the pressure vessel to be tested is arranged above the base.

[0011] Preferably, the inflation component includes a pipe fixedly connected to one end of the U-shaped frame, the rectangular slider is fixedly connected to a piston rod on a side close to the pipe, the piston rod passes through the surface of the U-shaped frame and extends into the pipe, and the extended end of the piston rod is fixedly connected to a circular piston plate which slides axially on the inner wall of the pipe, a vertical pipe is connected to the top of the glass cover, the lower end of the vertical pipe is communicated with the air inlet of the pressure vessel to be tested, a limiting tube is telescopically connected to the upper end of the vertical tube, a one-way air inlet valve and a one-way air outlet valve are installed in the pipe, and a hose is connected between the limiting tube and the pipe.

[0012] Preferably, a telescopic rod is vertically fixed to the upper surface of the base, and two symmetrically distributed connecting rods are slidably connected to the top of the telescopic rod. One end of the two connecting rods is fixedly connected to an arc-shaped clamping plate, and the two arc-shaped clamping plates are both attached to the surface of the limiting tube, and a spring three is fixedly connected between the ends of the two arc-shaped clamping plates.

[0013] Preferably, a positioning component for detecting the leakage position of the pressure vessel is arranged in the glass cover, and a sealed annular space is formed between the glass cover and the pressure vessel. The positioning component includes an annular space, and an annular piston plate is arranged in the annular space. Two linkage rods are vertically fixed to the upper and lower surfaces of the annular piston plate, and an annular frame 1 is commonly fixed between two of the linkage rods, and an annular frame 2 is commonly fixed between the other two linkage rods. The inner walls of the annular frame 2 and the annular frame 1 are fixedly connected with an annular rubber ring, and the annular rubber ring is sleeved on the outer wall of the container to be detected.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The present invention sets a driving assembly to drive the radiation detector to move back and forth in the vertical direction, and at the same time drives the cylindrical table and the pressure vessel to be inspected on the cylindrical table to rotate intermittently, so that the pressure vessel can rotate once every time the radiation detector moves up and down, thereby performing a full-scale inspection on the pressure vessel.

[0016] 2. The present invention is capable of inflating the pressure vessel to be inspected by providing an inflation component, so as to facilitate subsequent inspection work.

[0017] 3. If the pressure vessel on the cylindrical platform leaks, the leak position on the pressure vessel can be quickly determined by setting a positioning component. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of a rapid nondestructive testing device for a pressure vessel of the present invention;

[0019] Figure 2 is a schematic cross-sectional structural diagram of the glass cover in the present invention;

[0020] Figure 3 The structure of the driving component in the present invention is shown in FIG. Figure 1 ;

[0021] Figure 4 The structure of the driving component in the present invention is shown in FIG. Figure 2 ;

[0022] Figure 5 For the present invention Figure 4 A schematic diagram of the enlarged structure at A in the middle;

[0023] Figure 6 It is a schematic diagram of the structure of the inflatable component in the present invention;

[0024] Figure 7 For the present invention Figure 1 Schematic diagram of the enlarged structure at point B in the middle.

[0025] In the figure: 1, base; 2, cylindrical table; 3, ray detector; 4, driving assembly; 41, column; 42, rectangular plate; 43, inclined groove; 44, Chinese-shaped frame; 45, rectangular slider; 46, clamping rod; 47, spring one; 48, circular slider; 491, ratchet; 492, rod one; 493, rod two; 494, limit block; 495, spring two; 5, inflation assembly; 51, pipeline; 52, piston rod; 53, circular piston plate; 54, vertical pipe; 55, limit pipe; 56, telescopic rod; 57, connecting rod; 58, arc clamping plate; 59, spring three; 6, glass cover; 7, positioning assembly; 71, annular space; 72, annular piston plate; 73, linkage rod; 74, annular frame one; 75, annular frame two; 76, annular rubber ring. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] Embodiment 1

[0028] See also Figure 1-Figure 5 The present invention provides a technical solution: a rapid nondestructive testing device for a pressure vessel, comprising a base 1, and a cylindrical table 2 rotatably connected to the base 1 for carrying the pressure vessel, a radiation detector 3 is arranged above the base 1, and a driving component 4 is arranged above the base 1 for driving the radiation detector 3 to reciprocate in a vertical direction and simultaneously driving the cylindrical table 2 to rotate intermittently.

[0029] During use, the pressure vessel to be inspected is placed on the cylindrical table 2, and a driving assembly 4 is provided to drive the radiation detector 3 to move back and forth in the vertical direction. At the same time, the cylindrical table 2 and the pressure vessel to be inspected on the cylindrical table 2 are driven to rotate intermittently, so that the pressure vessel can rotate once every time the radiation detector 3 moves up and down, thereby performing a full-scale inspection on the pressure vessel.

[0030] The driving assembly 4 includes a column 41 vertically fixed to the upper surface of the base 1, and a rectangular plate 42 is slidably connected to the surface of the column 41. A convex sliding groove is provided on the side of the column 41 close to the rectangular plate 42, and a convex sliding block adapted to the convex sliding groove is integrally fixed on the side of the rectangular plate 42 close to the column 41. The rectangular plate 42 is driven by an external driving device, and the radiation detector 3 is fixedly installed on the upper surface of the rectangular plate 42.

[0031] The external driving device is a cylinder.

[0032] During use, the pressure vessel to be inspected is placed on the cylindrical table 2, and the radiation detector 3 is facing the pressure vessel to be inspected. The cylinder of the external driving device is started to drive the column 41 and the radiation detector 3 installed on the upper surface of the column 41 to move back and forth up and down, so that the radiation detector 3 can inspect the pressure vessel.

[0033] An oblique groove 43 is provided on the surface of the rectangular plate 42 away from the column 41, a support rod is vertically fixed to the upper surface of the base 1, a U-shaped frame 44 is vertically fixed to the upper end of the support rod, a rectangular slider 45 is slidably connected in the U-shaped frame 44, a clamping rod 46 is rotatably connected to the inner wall of the rectangular slider 45, a spring 47 is fixedly connected between the clamping rod 46 and the rectangular slider 45, a circular slider 48 is fixedly connected to the side of the rectangular slider 45 away from the clamping rod 46, the circular slider 48 is slidably connected in the oblique groove 43, and one end of the clamping rod 46 is arc-shaped.

[0034] A ratchet 491 is arranged above the base 1 and is coaxially fixed with the cylindrical table 2. One end of the clamping rod 46 is adapted to the tooth groove of the ratchet 491. A rod 1 492 is vertically fixed to the upper surface of the base 1. A rod 2 493 is telescopically inserted into the upper end of the rod 1 492. The upper end of the rod 2 493 is fixedly connected to a limiting block 494. The surface of the limiting block 494 is provided with an inclined surface that cooperates with the teeth on the ratchet 491. A spring 2 495 is sleeved on the surface of the rod 2 493. One end of the spring 2 495 is fixed to the limiting block 494, and the other end is fixed to the rod 1 492.

[0035] In use, since the circular slider 48 is fixed on the rectangular slider 45, and the moving path of the rectangular slider 45 is limited by the U-shaped frame 44, when the rectangular plate 42 is reciprocating up and down, the rectangular plate 42 can drive the circular slider 48 slidably connected in the inclined groove 43 to reciprocate in the horizontal direction, and the circular slider 48 drives the rectangular slider 45 fixed at one end thereof to reciprocate in the horizontal direction, and the rectangular slider 45 can drive the clamping rod 46 to reciprocate in the horizontal direction;

[0036] When the clamping rod 46 moves toward the side close to the pipe 51, one end of the clamping rod 46 is stuck in the tooth groove of the ratchet 491, which can drive the ratchet 491 to rotate along the A direction to a preset angle. At the same time, when the ratchet 491 rotates, the side wall of the tooth groove of the ratchet 491 can push the inclined surface of the limit block 494, so that the limit block 494 can move downward and thus disengage from the tooth groove of the ratchet 491. At the same time, the limit block 494 will squeeze the second spring 495. When the ratchet 491 stops rotating, the second spring 495 will drive the limit block 494 to return to its original position through the rebound force, so that the limit block 494 continues to be stuck in one of the tooth grooves of the ratchet 491.

[0037] When the lever 46 moves back, the limit block 494 is stuck in the tooth groove of the ratchet 491, so that the ratchet 491 cannot rotate in the direction B;

[0038] Therefore, each time the clamping rod 46 reciprocates, the ratchet 491 rotates, and the ratchet 491 can drive the cylindrical table 2 coaxially fixed therewith to rotate, and the cylindrical table 2 can drive the pressure container to be inspected located on its upper surface to rotate.

[0039] Embodiment 2

[0040] See also Figure 1-Figure 7 This embodiment further explains the first embodiment. A glass cover 6 for covering the pressure vessel to be tested is placed on the ratchet 491, and an inflation component 5 for inflating the pressure vessel to be tested is arranged above the base 1.

[0041] During use, by providing the inflation component 5, the pressure vessel to be inspected can be inflated to facilitate subsequent inspection work.

[0042] The inflation component 5 includes a pipe 51 fixedly connected to one end of the U-shaped frame 44, and a piston rod 52 is fixedly connected to the side of the rectangular slider 45 close to the pipe 51. The piston rod 52 passes through the surface of the U-shaped frame 44 and extends into the pipe 51, and the extended end of the piston rod 52 is fixedly connected to a circular piston plate 53 that slides axially on the inner wall of the pipe 51, and the circular piston plate 53 is adapted to the pipe 51. A vertical pipe 54 is inserted into the top of the glass cover 6, and the lower end of the vertical pipe 54 is communicated with the air inlet of the pressure vessel to be tested. A limiting tube 55 is telescopically inserted into the upper end of the vertical pipe 54. A one-way air inlet valve and a one-way air outlet valve are installed in the pipe 51, and a hose (not shown in the figure) is connected between the limiting tube 55 and the pipe 51.

[0043] During use, when the rectangular slider 45 reciprocates in the horizontal direction, it can drive the piston rod 52 fixed on its surface and the circular piston plate 53 fixed at one end of the piston rod 52 to reciprocate in the horizontal direction, so that the pipeline 51 can inhale external air through the one-way air inlet valve, and then transport the gas to the pressure vessel to be tested through the one-way air outlet valve, the hose, the limit tube 55, and the vertical pipe 54.

[0044] A telescopic rod 56 is vertically fixed to the upper surface of the base 1, and two symmetrically distributed connecting rods 57 are slidably connected to the top of the telescopic rod 56. One end of the two connecting rods 57 is fixedly connected to an arc-shaped clamping plate 58. The two arc-shaped clamping plates 58 are both attached to the surface of the limiting tube 55, and a spring three 59 is fixedly connected between the ends of the two arc-shaped clamping plates 58.

[0045] During use, when the ratchet 491 drives the cylindrical table 2, the glass cover 6 and the pressure vessel to be inspected on the cylindrical table 2 to rotate, the limiting tube 55 will not rotate because it is clamped and fixed by two arc-shaped clamping plates 58, thereby preventing the hose between the limiting tube 55 and the pipeline 51 from getting tangled.

[0046] The inclined groove 43 is inclined from top to bottom from a side close to the pipeline 51 to a side far away from the pipeline 51 .

[0047] Embodiment 3

[0048] See also Figure 1-Figure 2 This embodiment further illustrates the first embodiment, wherein a positioning assembly 7 for detecting the leakage position of the pressure vessel is disposed in the glass cover 6 .

[0049] During use, if the pressure container on the cylindrical platform 2 leaks, the location of the leak on the pressure container can be quickly determined by providing the positioning assembly 7 .

[0050] The pressure vessel to be tested is cylindrical, and the diameter of the cylindrical platform 2 is the same as the diameter of the pressure vessel to be tested.

[0051] A sealed annular space 71 is formed between the glass cover 6 and the pressure container. The positioning assembly 7 includes the annular space 71. An annular piston plate 72 is arranged in the annular space 71. Two linkage rods 73 are vertically fixed to the upper and lower surfaces of the annular piston plate 72, and an annular frame 1 74 is commonly fixed between the two linkage rods 73. An annular frame 2 75 is commonly fixed between the other two linkage rods 73. The inner walls of the annular frame 2 75 and the annular frame 1 74 are fixedly connected with an annular rubber ring 76, and the annular rubber ring 76 is sleeved on the outer wall of the container to be detected.

[0052] In use, in the initial state, the two annular rubber rings 76 are respectively sleeved on the upper and lower ends of the pressure vessel, and the annular piston plate 72 is located in the middle part of the pressure vessel. If the upper part of the pressure vessel leaks, the annular piston plate 72 will be pushed to move downward, and the annular piston plate 72 can drive the annular frame 74 to move downward through the linkage rod 73, and the annular frame 74 can drive the annular rubber ring 76 fixed on its inner wall to move downward. When the annular rubber ring 76 moves to the leaking position, it will block the leaking hole, so that the pressure vessel will no longer leak, and the annular space 71 will also stop moving, thereby determining that the leaking part of the pressure vessel is at the position wrapped by the annular rubber ring 76;

[0053] If leakage occurs in the lower half of the pressure vessel, the annular piston plate 72 will be pushed to move upward, and the annular piston plate 72 can drive the annular frame 75 to move upward through the linkage rod 73. The annular frame 75 can drive the annular rubber ring 76 fixed on its inner wall to move upward. When the annular rubber ring 76 moves to the leakage position, it will block the leakage hole, so that the pressure vessel will no longer leak. At the same time, the annular space 71 will also stop moving, thereby determining that the leakage part of the pressure vessel is at the position wrapped by the annular rubber ring 76.

[0054] The model of the ray detector 3 is BW04-TBM-3SRD.

[0055] Working principle: This is a rapid non-destructive testing device for pressure vessels. When in use, the cylinder of the external driving device is started to drive the column 41 and the radiation detector 3 installed on the upper surface of the column 41 to move up and down, so that the radiation detector 3 can detect the pressure vessel;

[0056] Since the circular slider 48 is fixed on the rectangular slider 45, and the moving path of the rectangular slider 45 is limited by the U-shaped frame 44, when the rectangular plate 42 moves up and down, the rectangular plate 42 can drive the circular slider 48 slidably connected in the inclined groove 43 to move back and forth in the horizontal direction, and the circular slider 48 drives the rectangular slider 45 fixed at one end thereof to move back and forth in the horizontal direction, and the rectangular slider 45 can drive the clamping rod 46 to move back and forth in the horizontal direction;

[0057] When the clamping rod 46 moves toward the side close to the pipe 51, one end of the clamping rod 46 is stuck in the tooth groove of the ratchet 491, which can drive the ratchet 491 to rotate along the A direction to a preset angle. At the same time, when the ratchet 491 rotates, the side wall of the tooth groove of the ratchet 491 can push the inclined surface of the limit block 494, so that the limit block 494 can move downward and thus disengage from the tooth groove of the ratchet 491. At the same time, the limit block 494 will squeeze the second spring 495. When the ratchet 491 stops rotating, the second spring 495 will drive the limit block 494 to return to its original position through the rebound force, so that the limit block 494 continues to be stuck in one of the tooth grooves of the ratchet 491.

[0058] When the lever 46 moves back, the limit block 494 is stuck in the tooth groove of the ratchet 491, so that the ratchet 491 cannot rotate in the direction B;

[0059] Therefore, each time the clamping rod 46 reciprocates, the ratchet wheel 491 rotates, and the ratchet wheel 491 can drive the cylindrical platform 2 coaxially fixed therewith to rotate, and the cylindrical platform 2 can drive the pressure vessel to be inspected located on its upper surface to rotate;

[0060] When the rectangular slider 45 reciprocates in the horizontal direction, it can drive the piston rod 52 fixed on its surface and the circular piston plate 53 fixed on one end of the piston rod 52 to reciprocate in the horizontal direction, so that the pipeline 51 can inhale external air through the one-way valve, and then transport the gas to the pressure vessel to be tested through the hose, the limit tube 55 and the vertical pipe 54;

[0061] When the ratchet 491 drives the cylindrical platform 2, the glass cover 6 and the pressure vessel to be tested on the cylindrical platform 2 to rotate, the limiting tube 55 will not rotate because it is clamped and fixed by the two arc-shaped clamping plates 58, thereby preventing the hose between the limiting tube 55 and the pipeline 51 from getting tangled;

[0062] In the initial state, the two annular rubber rings 76 are respectively sleeved on the upper and lower ends of the pressure vessel, and the annular piston plate 72 is located in the middle of the pressure vessel. If the upper half of the pressure vessel leaks, the annular piston plate 72 will be pushed to move downward, and the annular piston plate 72 can drive the annular frame 1 74 to move downward through the linkage rod 73, and the annular frame 1 74 can drive the annular rubber ring 76 fixed on its inner wall to move downward. When the annular rubber ring 76 moves to the leaking position, it will block the leaking hole, so that the pressure vessel will no longer leak, and the annular space 71 will also stop moving, thereby determining that the leaking part of the pressure vessel is at the position wrapped by the annular rubber ring 76;

[0063] If the lower half of the pressure vessel leaks, the annular piston plate 72 will be pushed to move upward, and the annular piston plate 72 can drive the annular frame 75 to move upward through the linkage rod 73. The annular frame 75 can drive the annular rubber ring 76 fixed on its inner wall to move upward. When the annular rubber ring 76 moves to the leaking position, it will block the leaking hole, so that the pressure vessel will no longer leak. At the same time, the annular space 71 will also stop moving, thereby determining that the leaking part of the pressure vessel is at the position wrapped by the annular rubber ring 76.

[0064] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A rapid nondestructive testing device for pressure vessels, characterized in that: It comprises a base (1), and a cylindrical table (2) rotatably connected to the base (1) for carrying a pressure vessel, a radiation detector (3) being arranged above the base (1), and a driving component (4) being arranged above the base (1) for driving the radiation detector (3) to move back and forth in a vertical direction and simultaneously driving the cylindrical table (2) to rotate intermittently; The driving assembly (4) comprises a column (41) vertically fixed to the upper surface of the base (1); a rectangular plate (42) is provided on the surface of the column (41) for sliding upward and downward limiting movement; the rectangular plate (42) is driven by an external driving device; and the radiation detector (3) is fixedly mounted on the upper surface of the rectangular plate (42); An oblique groove (43) is provided on the surface of the rectangular plate (42) away from the column (41); a support rod is vertically fixed on the upper surface of the base (1); a U-shaped frame (44) is vertically fixed on the upper end of the support rod; a rectangular slider (45) is slidably connected in the U-shaped frame (44); a clamping rod (46) is rotatably connected to the inner wall of the rectangular slider (45); a spring (47) is fixedly connected between the clamping rod (46) and the rectangular slider (45); a circular slider (48) is fixedly connected to the side of the rectangular slider (45) away from the clamping rod (46); the circular slider (48) is slidably connected in the oblique groove (43); and one end of the clamping rod (46) is arc-shaped; A ratchet (491) is arranged above the base (1) and is coaxially fixed with the cylindrical table (2); one end of the clamping rod (46) is adapted to the tooth groove of the ratchet (491); a rod 1 (492) is vertically fixed to the upper surface of the base (1); a rod 2 (493) is telescopically inserted at the upper end of the rod 1 (492); the upper end of the rod 2 (493) is fixedly connected to a limit block (494); a surface of the limit block (494) is provided with an inclined surface that matches the teeth on the ratchet (491); a spring 2 (495) is sleeved on the surface of the rod 2 (493); one end of the spring 2 (495) is fixed to the limit block (494), and the other end is fixed to the rod 1 (492).

2. A rapid nondestructive testing device for pressure vessels according to claim 1, characterized in that: A glass cover (6) for covering the pressure vessel to be tested is placed on the ratchet wheel (491), and an inflation component (5) for inflating the pressure vessel to be tested is arranged above the base (1).

3. A rapid nondestructive testing device for pressure vessels according to claim 2, characterized in that: The inflation assembly (5) comprises a pipe (51) fixedly connected to one end of a U-shaped frame (44); a piston rod (52) is fixedly connected to a side of the rectangular slider (45) close to the pipe (51); the piston rod (52) passes through the surface of the U-shaped frame (44) and extends into the pipe (51); and the extended end of the piston rod (52) is fixedly connected to a circular piston plate (53) that slides axially on the inner wall of the pipe (51); a vertical pipe (54) is plugged into the top of the glass cover (6); the lower end of the vertical pipe (54) is communicated with the air inlet of the pressure vessel to be tested; the upper end of the vertical pipe (54) is telescopically plugged with a limit tube (55); a one-way air inlet valve and a one-way air outlet valve are installed in the pipe (51); and a hose is connected between the limit tube (55) and the pipe (51).

4. A rapid nondestructive testing device for pressure vessels according to claim 3, characterized in that: A telescopic rod (56) is vertically fixed to the upper surface of the base (1); the top of the telescopic rod (56) is slidably connected to two symmetrically distributed connecting rods (57); one end of each of the two connecting rods (57) is fixedly connected to an arc-shaped clamping plate (58); the two arc-shaped clamping plates (58) are both fitted to the surface of the limiting tube (55); and a spring three (59) is fixedly connected between the ends of the two arc-shaped clamping plates (58).

5. A rapid nondestructive testing device for pressure vessels according to claim 4, characterized in that: A positioning assembly (7) for detecting the leaking position of the pressure vessel is arranged in the glass cover (6), a sealed annular space (71) is formed between the glass cover (6) and the pressure vessel, the positioning assembly (7) comprises an annular space (71), an annular piston plate (72) is arranged in the annular space (71), two linkage rods (73) are vertically fixed to the upper surface and the lower surface of the annular piston plate (72), and a first annular frame (74) is fixed between the two linkage rods (73), and a second annular frame (75) is fixed between the other two linkage rods (73), and the inner walls of the second annular frame (75) and the first annular frame (74) are fixedly connected to an annular rubber ring (76), and the annular rubber ring (76) is sleeved on the outer wall of the container to be detected.

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