Valve pressure testing device and method of use

Abstract

The application relates to the technical field of valve pressure testing, in particular to a valve pressure testing device and a use method thereof, which comprises a detection water tank, a supporting frame is arranged on the detection water tank, a rotating support structure is rotatably arranged on the supporting frame, an intermittent driving mechanism capable of driving the rotating support structure to intermittently rotate among various stations is arranged on the supporting frame, a plurality of clamping structures for positioning and clamping a ball valve body are arranged on the rotating support structure along the circumferential direction of the rotating support structure, and a gas charging and discharging pipeline structure for charging and discharging the ball valve body is arranged between the clamping structures; through the mutual cooperation and mutual cooperation among the detection water tank, the rotating support structure, the intermittent driving mechanism, the clamping structure, the gas charging and discharging pipeline structure, a feeding slide structure and a discharging slide structure, exhaust and gas charging can be simultaneously completed, the gas can be recycled, the exhaust operation and time can be saved, and full-process automatic testing can be realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of valve pressure testing, in particular to a valve pressure testing device and a use method thereof. BACKGROUND

[0002] As a key component of fluid control system, if there is a gas tightness defect, it may cause medium leakage in actual work. Especially when conveying flammable and explosive, toxic and harmful or high pressure fluid, leakage may cause fire, explosion, poisoning and other serious safety accidents. Through gas tightness pressure detection, small gaps, poor sealing and other problems of the valve can be found in time to avoid safety hazards from the source.

[0003] A valve pressure testing device and a testing method thereof are disclosed in CN118706362B, which relates to the field of valve testing. It includes a gas source output device and a testing tool. The gas source output device is connected to the front end of the testing tool through an air inlet pipeline. The rear end of the testing tool is provided with an exhaust pipeline connected to the outside. The air inlet pipeline and the exhaust pipeline are both provided with a thermocouple for temperature measurement and a pressure gauge for pressure measurement.

[0004] A valve gas tightness detection device is disclosed in CN115524080A, which includes a detection pool, a lifting assembly and a detection assembly. The detection pool is provided with detection liquid. The lifting assembly is arranged in the detection pool and includes a lifting plate. The detection assembly is arranged on the lifting plate. The lifting assembly is used to control the up-down displacement of the lifting plate to control the detection assembly to enter and exit the detection liquid.

[0005] Currently, after detection, the gas is directly discharged, and slow discharge is also needed to ensure safety. Neither the gas is recycled, causing waste of gas source, nor the discharge time is long, and the overall degree of automation is low, which cannot realize full-process automatic testing. SUMMARY

[0006] The purpose of the present application is to provide a valve pressure testing device and a use method thereof to solve the above problems.

[0007] To achieve the above purpose, the present application provides the following technical solutions:

[0008] The valve pressure testing device provided by the present application includes a detection water tank, a support frame is arranged on the detection water tank, a rotating support frame structure is rotatably arranged on the support frame, and an intermittent driving mechanism capable of driving the rotating support frame structure to intermittently rotate between each station is arranged on the support frame.

[0009] The rotating support structure is provided with a plurality of clamping structures for positioning and clamping the ball valve body along the circumferential direction thereof, and the clamping structures are provided with a gas charging and discharging pipeline structure for charging and discharging gas into the ball valve body.

[0010] Two adjacent work positions are respectively provided with an upper feeding slide structure and a lower feeding slide structure, and the gas in the ball valve body at the position of the lower feeding slide structure can be charged into the ball valve body at the position of the upper feeding slide structure through the gas charging and discharging pipeline structure, thereby simultaneously realizing the gas discharging and charging operations.

[0011] Further, the rotating support structure comprises two parallel distributed rotating discs, the rotating shafts of the two rotating discs are provided with a central rotating shaft, the central rotating shaft is rotatably arranged on a support frame, a central rotating table is fixed on the central rotating shaft between the two rotating discs, a plurality of rotating rods are uniformly distributed around the central rotating table, each rotating rod is provided with a clamp, the outer shape of the clamp is J-shaped, and a stop edge is arranged on the clamp for limiting the flange end face of the ball valve body.

[0012] Further, the intermittent driving mechanism comprises a driven groove wheel fixedly arranged on the central rotating shaft, and a driving dial is engagedly connected to one side of the driven groove wheel, the driving dial is rotatably arranged on the support frame, a motor is fixedly arranged on the support frame, and the output shaft end of the motor and the shaft end of the driving dial are connected to each other through a speed reducer.

[0013] Further, the clamping structure comprises a hydraulic cylinder fixedly arranged on the rotating disc, a clamping plate is fixedly connected to the head end of the push rod of the hydraulic cylinder, a sealing gasket for sealingly abutting against the flange end face of the ball valve body is arranged on the clamping plate, and a gas pressure sensor is arranged on the clamping plate.

[0014] Further, the gas charging and discharging pipeline structure comprises a group of gas inlet pipes and gas outlet pipes corresponding to the number of clamping structures respectively, the two groups of gas inlet pipes and gas outlet pipes are connected to each other and connected with a connecting pipe, an air passage is formed in the central rotating shaft, each connecting pipe is in communication with the air passage, and an electromagnetic three-way valve is arranged at the connection between the gas inlet pipe, the gas outlet pipe and the connecting pipe.

[0015] Further, two spring gas guide pipes are connected to the clamping plate, a pipe penetrating hole is formed in the rotating disc for penetrating the spring gas guide pipes, the two spring gas guide pipes are connected to the gas inlet pipe and the gas outlet pipe respectively, a gas filling pipe is connected to the end of the central rotating shaft through a sealing rotary joint, and the gas filling pipe is in rotatable and sealing communication with the air passage through the sealing rotary joint.

[0016] Further, the upper feeding slide structure comprises two parallel distributed first rail rods, first rail grooves are formed in the opposite sides of the two first rail rods, and the lower sides of the first rail rods are fixedly arranged on the detection water tank through brackets.

[0017] Further, the blanking chute structure comprises two second rails distributed in parallel, second rail grooves are formed on opposite sides of the two second rails, a sliding block is fixedly arranged on the lower side of the second rail, an electric telescopic rod is fixedly arranged on the detection water tank, the head end of the push rod of the electric telescopic rod is fixedly connected with the sliding block, two guide rods are symmetrically arranged on the two sides of the electric telescopic rod, one end of the two guide rods is fixedly connected to the detection water tank, and the other end of the two guide rods is slidably connected to the guide sliding hole formed in the corresponding position of the sliding block.

[0018] Further, the detection water tank is provided with a detection camera for photographing and detecting the generated bubbles.

[0019] A valve pressure testing device and a use method thereof are provided.

[0020] S1: The intermittent driving mechanism drives the rotating support structure to rotate, completes the feeding of the ball valve body at the position of the feeding chute structure, and realizes the positioning and clamping of the ball valve body by the clamping structure, wherein the valve stem of the ball valve body is in a closed state, so as to form a detection chamber at the inlet end and the outlet end;

[0021] S2: The intermittent driving mechanism drives the rotating support structure to continue to rotate, completes the inflation of the detection chamber by the inflation pipeline structure, and enters the detection water tank under the continuous driving of the rotating support structure, and whether the ball valve body has a leakage condition is judged by whether bubbles are generated;

[0022] S3: When the intermittent driving mechanism drives the rotating support structure to rotate to the position of the blanking chute structure with the ball valve body, first, the inflation pipeline structure inflates the gas in the ball valve body at the position of the blanking chute structure into the ball valve body at the position of the feeding chute structure, and simultaneously completes the exhaust at the position of the blanking chute structure and the inflation at the position of the feeding chute structure;

[0023] S4: The clamping structure releases the clamping of the ball valve body at the position of the blanking chute structure, and finally completes the exhaust, and then the ball valve body is discharged through the blanking chute structure

[0024] Compared with the prior art, the beneficial effects of the present application are as follows:

[0025] 1. By the mutual cooperation and mutual cooperation between the detection water tank, the rotating support structure, the intermittent driving mechanism, the clamping structure, the inflation pipeline structure, the feeding chute structure and the blanking chute structure, the exhaust and inflation are simultaneously completed, the circulation of the gas is realized, the exhaust operation and time are saved, and the full-flow automatic testing is realized.

[0026] 2. The rotating support structure is driven by the intermittent driving mechanism to rotate intermittently among multiple stations, cooperates with the feeding slide structure and the discharging slide structure, realizes the automatic feeding, detection and discharging of the ball valve body, and improves the detection efficiency.

[0027] 3. The rotating support structure has multiple functions under the driving of the intermittent driving mechanism, the first function is to complete the feeding operation cooperated with the feeding slide structure, the second function is to complete the position conversion of the ball valve body among the stations, the third function is to complete the discharging operation of the ball valve body on the discharging slide structure, and the fourth function is to rotate the clamped ball valve body to the detection water tank to complete the air tightness experiment. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort based on these drawings.

[0029] Figure 1 is the front view structure schematic diagram of the present application;

[0030] Figure 2 is the first direction three-dimensional structure schematic diagram of the present application; Figure 1

[0031] Figure 3 is the B place local enlarged structure schematic diagram of the present application; Figure 2

[0032] Figure 4 is the A-A cross section structure schematic diagram of the present application; Figure 1

[0033] Figure 5 is the second direction three-dimensional structure schematic diagram of the present application; Figure 1

[0034] Figure 6 is the C place local enlarged structure schematic diagram of the present application; Figure 5

[0035] Figure 7 is the first rail cross section structure schematic diagram of the present application.

[0036] ​​​​​The reference signs are explained as follows: 1, detection water tank; 101, support frame; 2, rotating support structure; 201, center rotating table; 202, rotating rod; 203, rotating disc; 204, clamp; 205, blocking edge; 206, pipe penetrating hole; 207, center rotating shaft; 3, intermittent driving mechanism; 301, driving dial; 302, driven groove wheel; 303, motor; 304, speed reducer; 4, clamping structure; 401, hydraulic cylinder; 402, clamping plate; 403, sealing gasket; 404, air pressure sensor; 405, spring air guide pipe; 5, gas charging and discharging pipeline structure; 501, gas charging pipe; 502, air passage; 503, sealing rotary joint; 504, gas inlet pipe; 505, gas outlet pipe; 506, electromagnetic three-way valve; 507, connecting pipe; 6, feeding slide structure; 601, first rail; 602, bracket; 603, first rail groove; 7, discharging slide structure; 701, second rail; 702, sliding block; 703, electric telescopic rod; 704, guide rod; 705, supporting roller; 706, second rail groove; 8, digital control panel; 9, ball valve body; 10, detection camera. DETAILED DESCRIPTION

[0037] In order to make the objects, technical solutions and advantages of the present application clearer, the technical solutions of the present application will be described in detail below. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work belong to the scope of protection of the present application.

[0038] Reference Figures 1-7 As shown in the drawings, the present application provides a valve pressure test device, which comprises a detection water tank 1 and a digital control panel 8. The detection water tank 1 is provided with a detection camera 10 for taking pictures to detect the generated bubbles. The digital control panel 8 and the detection camera 10 are electrically connected with each other. The detection water tank 1 is provided with a support frame 101. The support frame 101 is rotatably provided with a rotating support structure 2. The support frame 101 is provided with an intermittent driving mechanism 3 capable of driving the rotating support structure 2 to rotate intermittently between four or more stations. The rotating support structure 2 is provided with four or more clamping structures 4 along the circumferential direction thereof for positioning and clamping a ball valve body 9. The number of the clamping structures 4 corresponds to the number of the stations one by one. The clamping structures 4 are provided with a gas charging and discharging pipeline structure 5 for charging and discharging gas to the ball valve body 9. Two adjacent station positions are respectively provided with a feeding slide structure 6 and a discharging slide structure 7. The gas in the ball valve body 9 at the position of the discharging slide structure 7 can be charged into the ball valve body 9 at the position of the feeding slide structure 6 through the gas charging and discharging pipeline structure 5, so as to simultaneously realize the gas discharging and charging operations.

[0039] See the description Figure 2 and Figure 3As shown, the rotating support structure 2 comprises two parallel distributed rotating discs 203, the rotating shafts of the two rotating discs 203 are provided with a central rotating shaft 207, the central rotating shaft 207 is rotationally arranged on the support frame 101, the central rotating shaft 207 between the two rotating discs 203 is fixed with a central rotating table 201, the outer side of the central rotating table 201 is fixed with more than four rotating rods 202 which are uniformly distributed with the rotating shafts as the center, each rotating rod 202 is provided with a clamp 204, the clamp 204 has a J-shaped contour, and the clamp 204 is provided with a stop edge 205 for limiting the flange end face of the ball valve body 9. Through the above specific structural design, the rotating support structure 2 driven by the intermittent driving mechanism 3 has multiple functions, the first function is to complete the feeding operation in cooperation with the feeding slide structure 6, the second function is to complete the position conversion of the ball valve body 9 between various stations, the third function is to complete the unloading operation of the ball valve body 9 on the unloading slide structure 7, and the fourth function is to rotate the clamped ball valve body 9 to complete the air tightness test in the detection water tank 1.

[0040] As shown in the accompanying drawings Figure 1 、 Figure 4 and Figure 5 As shown, the intermittent driving mechanism 3 comprises a driven groove wheel 302 fixedly arranged on the central rotating shaft 207, one side of the driven groove wheel 302 is engagedly connected with a driving dial 301, the driving dial 301 is rotationally arranged on the support frame 101, the support frame 101 is fixedly provided with a motor 303, the output shaft end of the motor 303 is connected with the shaft end of the driving dial 301 through a speed reducer 304, and the output end of the digital display control panel 8 is electrically connected to the input end of the motor 303. After the motor 303 is started, the power of the output shaft is transmitted to the driving dial 301 through the speed reducer 304, driving the driving dial 301 to rotate on the support frame 101, the driving dial 301 is engagedly connected with the slot of the driven groove wheel 302 through the engaging pin thereon, and the intermittent engagement transmission of the two drives the central rotating shaft 207 and the rotating support structure 2 connected therewith to realize intermittent rotation, so that the ball valve body 9 on the rotating support structure 2 is sequentially switched between various stations, meeting the intermittent operation requirements of different processes such as feeding, detection and unloading.

[0041] As shown in the accompanying drawings Figure 2 、 Figure 3 、 Figure 4 and Figure 5As shown, the clamping structure 4 comprises a hydraulic cylinder 401 fixedly arranged on the rotary disc 203, the output end of the digital display control panel 8 is electrically connected to the input end of the hydraulic cylinder 401, the push rod head end of the hydraulic cylinder 401 is fixedly connected with a clamping plate 402, the clamping plate 402 is provided with a sealing gasket 403 for sealing abutting with the flange end face of the ball valve body 9, the clamping plate 402 is provided with an air pressure sensor 404, and the output end of the air pressure sensor 404 is electrically connected to the input end of the digital display control panel 8. In actual application, when the ball valve body 9 is transported to the work station at the feeding position, the hydraulic cylinder 401 fixed on the rotary disc 203 is started, the push rod is elongated and drives the clamping plate 402 to approach the flange end face of the ball valve body 9, until the sealing gasket 403 on the clamping plate 402 is sealed and abutted with the flange end face, so that the ball valve body 9 is clamped and sealed, and at the same time, the air pressure sensor 404 on the clamping plate 402 can monitor the air pressure change in the ball valve body 9 in real time, so as to judge whether the air tightness is qualified, after the detection is completed, at the discharging work station position, the push rod of the hydraulic cylinder 401 is retracted, the clamping plate 402 is reset, the ball valve body 9 is loosened, and subsequent transportation or discharging operation is carried out.

[0042] See the accompanying drawings Figure 1 、 Figure 4 、 Figure 5 and Figure 6As shown, the gas charging and discharging pipeline structure 5 includes a set of gas inlet pipes 504 and gas outlet pipes 505 corresponding to the number of the clamping structures 4 respectively, the gas inlet pipes 504 and the gas outlet pipes 505 adjacent to each other are connected and connected with the connecting pipes 507, the central rotating shaft 207 is internally formed with the air passage 502, each connecting pipe 507 is respectively communicated with the air passage 502, and the connecting portions between the gas inlet pipes 504, the gas outlet pipes 505 and the connecting pipes 507 are provided with the electromagnetic three-way valve 506. The clamping plate 402 is connected with two spring gas guide pipes 405, the rotating disc 203 is provided with the pipe penetrating hole 206 for penetrating the spring gas guide pipes 405, the two spring gas guide pipes 405 are respectively connected with the gas inlet pipes 504 and the gas outlet pipes 505, the end of the central rotating shaft 207 is connected with the gas charging pipe 501 through the sealing rotary joint 503, and the gas charging pipe 501 is rotatably and sealingly communicated with the air passage 502 through the sealing rotary joint 503. Through the above specific structural design, the electromagnetic three-way valve 506 is used to control the switching of the passages between the gas inlet pipes 504, the gas outlet pipes 505 and the connecting pipes 507, so that the ball valve body 9 is inflated, and when the gas in the ball valve is discharged at the unloading station, the adjacent gas inlet pipe and the gas outlet pipe are communicated through the electromagnetic three-way valve switching, so that the gas flows from the ball valve body 9 to be unloaded to the gas inlet pipe, then the external gas source is communicated with the air passage 502 in the central rotating shaft 207 through the gas charging pipe 501 and the sealing rotary joint 503, and the air passage 502 is connected to the gas inlet pipes 504 of the stations before detection through the connecting pipes 507. The output end of the digital display control panel 8 is electrically connected to the input end of the electromagnetic three-way valve 506.

[0043] See the description Figure 1 , Figure 2 , Figure 5 and Figure 7 As shown, the feeding slide structure 6 includes two first rails 601 distributed in parallel, the two first rails 601 are provided with first rail grooves 603 on the opposite sides, and the lower side of the first rail 601 is fixedly arranged on the detection water tank 1 through the bracket 602. In actual application, the clamp 204 can play a role in orienting the movement of the ball valve body 9, so as to facilitate the clamping and fixing of the ball valve body 9 by the clamping structure 4. In addition, the first rail 601 can be designed to be inclined from high to low to realize automatic feeding.

[0044] The blanking slide structure 7 comprises two second rail rods 701 distributed in parallel, second rail grooves 706 are formed on opposite sides of the two second rail rods 701, a sliding block 702 is fixedly arranged on the lower side of the second rail rod 701, a motor-driven telescopic rod 703 is fixedly arranged on the detection water tank 1, the output end of the digital display control panel 8 is electrically connected to the input end of the motor-driven telescopic rod 703, the head end of the push rod of the motor-driven telescopic rod 703 is fixedly connected to the sliding block 702, two guide rods 704 are symmetrically arranged on the two sides of the motor-driven telescopic rod 703, one end of each of the two guide rods 704 is fixedly connected to the detection water tank 1, the other end of each of the two guide rods 704 is slidably connected to a guide sliding hole formed in the corresponding position of the sliding block 702, and a supporting roller 705 is arranged on the detection water tank 1 and used for supporting the second rail rod 701. Through the above specific structural design, when the ball valve body 9 is transported to the blanking station and released by the clamping structure 4, the motor-driven telescopic rod 703 is started, the push rod drives the sliding block 702 to slide along the guide rod 704, and then drives the second rail rod 701 to move to the position corresponding to the ball valve body 9, the supporting roller 705 supports the second rail rod 701 to ensure the stability of the second rail rod 701, the ball valve body 9 falls into the second rail groove 706 on the opposite side of the two second rail rods 701, and then slides out of the second rail groove 706 to complete blanking, then the motor-driven telescopic rod 703 drives the sliding block 702 and the second rail rod 701 to reset, and waits for the next blanking operation. In actual application, the rotation of the rotating support structure 2 can play a role in pushing the ball valve body 9 on the second rail rod 701, and the blanking of the ball valve body 9 on the second rail rod 701 is facilitated.

[0045] Working principle of the present application:

[0046] In use, the intermittent driving mechanism 3 drives the rotating support structure 2 to rotate, and the ball valve body 9 is loaded at the position of the loading slide structure 6, and the clamping structure 4 is used for positioning and clamping the ball valve body 9, the valve rod of the ball valve body 9 is in a closed state, thereby forming a detection chamber at the inlet end and the outlet end; the intermittent driving mechanism 3 drives the rotating support structure 2 to continue to rotate, the detection chamber is inflated by the inflation and deflation pipeline structure 5, and then enters the detection water tank 1 under the continuous rotation of the rotating support structure 2, and whether the ball valve body 9 has a leakage condition is determined by whether bubbles are generated; when the rotating support structure 2 with the ball valve body 9 is rotated to the position of the blanking slide structure 7 by the intermittent driving mechanism 3, the gas in the ball valve body 9 at the position of the blanking slide structure 7 is first inflated into the ball valve body 9 at the position of the loading slide structure 6 by the inflation and deflation pipeline structure 5, and at the same time, the gas at the position of the blanking slide structure 7 is exhausted and the gas at the position of the loading slide structure 6 is inflated; the clamping structure 4 releases the clamping of the ball valve body 9 at the position of the blanking slide structure 7, and finally exhausts, and then the ball valve body 9 is unloaded by the blanking slide structure 7.

[0047] The above merely illustrates the specific embodiments of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can easily think of the changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A valve pressure testing device, characterized in that: The invention comprises a detection water tank (1), wherein a support frame (101) is provided on the detection water tank (1), a rotating support structure (2) is rotatably provided on the support frame (101), and an intermittent driving mechanism (3) capable of driving the rotating support structure (2) to intermittently rotate at various workstations is provided on the support frame (101); The rotating support structure (2) is provided with a plurality of clamping structures (4) along its circumferential direction for positioning and clamping the ball valve body (9), and a gas charging and discharging pipe structure (5) for charging and discharging the ball valve body (9) is provided between the clamping structures (4); Two adjacent workstations are provided with a loading slide structure (6) and a unloading slide structure (7), respectively. The gas in the ball valve body (9) at the unloading slide structure (7) can be filled into the ball valve body (9) at the loading slide structure (6) through the charging and discharging pipe structure (5), thereby achieving deflation and inflation operations at the same time. The rotating support structure (2) includes two parallel rotating disks (203), the rotating axes of the two rotating disks (203) are provided with a central rotating shaft (207), the central rotating shaft (207) is rotatably arranged on the support frame (101), a central turntable (201) is fixed on the central rotating shaft (207) between the two rotating disks (203), a plurality of rotating rods (202) uniformly distributed around the rotating axis of the central turntable (201) are fixed on the outer side of the central turntable (201), each rotating rod (202) is provided with a clamp (204), the outer profile of the clamp (204) is J-shaped, and the clamp (204) is provided with a retaining edge (205) for limiting the end face of the flange on the ball valve body (9); The inflation and deflation air pipe structure (5) comprises a group of air inlet pipes (504) and air outlet pipes (505) corresponding in number to the clamping structures (4), the air inlet pipes (504) and air outlet pipes (505) of two adjacent groups are connected to each other and are connected to a connecting pipe (507), a ventilation channel (502) is formed inside the central rotating shaft (207), and each connecting pipe (507) is connected to the ventilation channel (502), and an electromagnetic three-way valve (506) is provided at the connection between the air inlet pipe (504), the air outlet pipe (505) and the connecting pipe (507).

2. A valve pressure testing device according to claim 1, characterized in that: The intermittent drive mechanism (3) comprises a driven sheave (302) fixedly mounted on a central rotating shaft (207); one side of the driven sheave (302) is meshedly connected to a driving dial (301); the driving dial (301) is rotatably mounted on a support frame (101); a motor (303) is fixedly mounted on the support frame (101); an output shaft end of the motor (303) is connected to a shaft end of the driving dial (301) via a reducer (304).

3. A valve pressure testing device according to claim 1, characterized in that: The clamping structure (4) comprises a hydraulic cylinder (401) fixedly arranged on a rotating disk (203), a push rod head end of the hydraulic cylinder (401) being fixedly connected to a clamping plate (402), a sealing gasket (403) for sealingly abutting against an end face of a flange of a ball valve body (9) being provided on the clamping plate (402), and an air pressure sensor (404) being provided on the clamping plate (402).

4. A valve pressure testing device according to claim 3, characterized in that: Two spring air guide tubes (405) are connected to the clamping plate (402), and a through-hole (206) for passing the spring air guide tubes (405) is provided on the rotating disk (203). The two spring air guide tubes (405) are respectively connected to the air inlet pipe (504) and the air outlet pipe (505). The end of the central rotating shaft (207) is connected to the air supply pipe (501) via a sealing rotary joint (503). The air supply pipe (501) is connected to the ventilation channel (502) in a rotating and sealed manner via the sealing rotary joint (503).

5. The valve pressure testing device according to claim 1, characterized in that: The loading slide structure (6) comprises two parallel distributed first rails (601), a first rail groove (603) being provided on one side of the two first rails (601) facing each other, and the lower side of the first rails (601) is fixedly arranged on the detection water tank (1) via a bracket (602).

6. The valve pressure testing device according to claim 1, characterized in that: The unloading slide structure (7) includes two parallel second rails (701), and the two second rails (701) are provided with a second rail groove (706) on one side opposite to each other. A slider (702) is fixedly provided on the lower side of the second rail (701). An electric telescopic rod (703) is fixedly provided on the detection water tank (1). The push rod head end of the electric telescopic rod (703) and the slider (702) are fixedly connected to each other. Two guide rods (704) are symmetrically distributed around the electric telescopic rod (703) on both sides. One end of the two guide rods (704) is fixedly connected to the detection water tank (1), and the other end of the two guide rods (704) is slidably connected to the guide sliding hole provided at the corresponding position of the slider (702). The detection water tank (1) is provided with a support roller (705) for supporting the second rail (701).

7. The valve pressure testing device according to claim 1, characterized in that: The detection water tank (1) is provided with a detection camera (10) for performing video detection of generated bubbles.

8. A method for using a valve pressure testing device, using the valve pressure testing device according to any one of claims 1 to 7, characterized in that: The following steps are involved: S1: The intermittent driving mechanism (3) drives the rotating support structure (2) to rotate, and completes the loading of the ball valve body (9) at the position of the loading slide structure (6), and the clamping structure (4) realizes the positioning and clamping of the ball valve body (9), and the valve stem of the ball valve body (9) is in a closed state, thereby forming a detection chamber at the inlet end and the outlet end; S2: The intermittent driving mechanism (3) drives the rotating support structure (2) to continue rotating, and the air filling and discharging pipe structure (5) completes the inflation of the detection chamber, and the air enters the detection water tank (1) while continuing to drive the rotating support structure (2) to rotate, and judges whether the ball valve body (9) is leaking by whether bubbles are generated; S3: When the intermittent driving mechanism (3) drives the rotating bracket structure (2) to rotate the ball valve body (9) to the position of the unloading slide structure (7), the gas in the ball valve body (9) at the position of the unloading slide structure (7) is firstly filled into the ball valve body (9) at the position of the loading slide structure (6) by the gas filling and discharging pipe structure (5), and the gas at the position of the unloading slide structure (7) and the gas filling at the position of the loading slide structure (6) are completed at the same time; S4: The clamping structure (4) releases the clamping of the ball valve body (9) at the position of the unloading slide structure (7) and completes the final exhaust. Finally, the unloading of the ball valve body (9) is completed through the unloading slide structure (7).

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