A pressure testing device for ball valve testing

Abstract

This utility model relates to the field of valve pressure testing technology and discloses a pressure testing device for ball valve testing. The device includes a base, a testing component on the top of the base, a ball valve body on the top of the base, and a clamping component on the top of the base. In this device, the outer wall of a conical sleeve is interference-fitted with the ball valve body to achieve installation. The conical sleeve has a self-centering function; its conical outer contour guides the ball valve to automatically center and align, eliminating manual alignment and repeated adjustments, significantly improving clamping efficiency before pressure testing. It automatically adapts to pipes with different inner diameters, allowing the device to accommodate welded or flanged ball valves. The support rod abuts against the bottom of the ball valve body, providing vertical upward support and preventing the ball valve from sliding or dislodging due to water or air pressure impact during pressure testing, thus improving clamping accuracy and structural stability.

Description

Technical Field

[0001] This utility model relates to the field of valve pressure testing technology, specifically a pressure testing device for ball valve testing. Background Technology

[0002] As an important component in fluid control systems, ball valves primarily function to control and regulate fluid media. They can perform functions such as fluid cut-off, diversion, and flow control in pipelines, thereby ensuring the normal operation and safety of the pipeline system. To ensure the reliability and safety of welded ball valves in practical applications, it is often necessary to conduct water pressure tests and air pressure tests on the valves before installation to check for internal leakage.

[0003] According to a public notice (No. CN220690447U) of a pressure testing device for a welded ball valve, the above application includes a valve body and sleeves integrally formed at both ends of the valve body. The pressure testing device includes a frame, two clamping plates for clamping the welded ball valve, an air compressor connected to the frame, and a water compressor connected to the frame. The clamping plates are connected to limit members, and the limit members have annular grooves for embedding the ends of the sleeves. One of the two limit members has a water injection channel.

[0004] However, in actual use, the above-mentioned pressure testing device is only applicable to welded ball valves due to the setting of the annular groove. Flange-connected ball valves, due to their significant differences in end structure, cannot be inserted or fixed in the annular groove, and cannot meet the unified pressure testing requirements for various types of ball valves. Each connection type requires the design of a special device, resulting in a narrow range of applications and poor versatility. In view of this, we propose a pressure testing device for ball valve testing. Utility Model Content

[0005] The purpose of this invention is to provide a pressure testing device for ball valve testing, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a pressure testing device for ball valve testing, comprising a base, a testing component disposed on the top of the base, a ball valve body disposed on the top of the base, and a clamping component disposed on the top of the base, the clamping component comprising:

[0007] A pneumatic compressor, wherein a movable plate is fixedly connected to the output end of the pneumatic compressor, and a conical sleeve is fixedly connected to the end of the movable plate away from the pneumatic compressor;

[0008] A fixed plate is provided, and a mounting plate is fixedly connected to the side wall of the fixed plate. A bidirectional screw is sleeved on the side wall of the mounting plate and threadedly connected to the movable block. A support rod is fixedly connected to the side wall of the movable block.

[0009] Preferably, a vertical plate is fixedly connected to the side wall of the base, and the pneumatic compressor is fixedly connected to the side wall of the vertical plate.

[0010] Preferably, a guide rail is fixedly connected to the side wall of the vertical plate, and the end of the guide rail away from the vertical plate is fixedly connected to the side wall of the fixed plate. The guide rail is slidably connected to the movable plate.

[0011] Preferably, the side walls of the fixed plate, the movable plate, and the vertical plate are provided with slots, and the support rod is slidably connected to the slots. The slots limit the movement direction of the support rod, so that the support rod can only move laterally.

[0012] Preferably, there are two sets of conical sleeves. The outer wall of the conical sleeve is inserted into the ball valve body. One set of the conical sleeves is fixedly connected to the side wall of the movable plate. A pressure gauge is fixedly connected to the top of the other set of conical sleeves. The pressure gauge is used to display the pressure inside the ball valve body, thereby determining the sealing degree of the ball valve body.

[0013] Preferably, the test assembly includes a pipe, the other set of conical sleeves is fixedly connected to the side wall of the fixing plate, the pipe is fixedly connected to the top of the other set of conical sleeves, and a water press and an air compressor are fixedly connected to the end of the pipe away from the conical sleeve. The water press and the air compressor are fixedly connected to the top end face of the base.

[0014] Preferably, a rubber ring is fixedly connected to the side wall of the conical sleeve, and the number of rubber rings is set in several groups, with the several groups of rubber rings evenly spaced on the side wall of the conical sleeve.

[0015] Compared with the prior art, this utility model provides a pressure testing device for ball valve testing, which has the following beneficial effects:

[0016] 1. This ball valve testing pressure testing device, through the set clamping components, achieves the installation of the ball valve body by the outer wall of the conical sleeve being interference-fitted with the ball valve body. The conical sleeve has a self-centering function, and its conical outer contour can guide the ball valve to automatically center and align, automatically adapting to different inner diameter pipe openings. At the same time, it allows the device to adapt to welded ball valves or flanged ball valves. The support rod abuts against the bottom of the ball valve body, providing vertical upward support force to prevent the ball valve from sliding or dislodging due to water pressure or air pressure impact during pressure testing, thereby improving clamping accuracy and structural stability.

[0017] 2. The ball valve testing pressure device uses a rubber ring to tightly seal the gap between the inner wall of the ball valve and the outer wall of the conical sleeve, achieving a highly reliable seal and preventing leakage during air or water pressure testing, while protecting the inner wall of the ball valve body from damage. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the main structure of the present utility model;

[0019] Figure 2 This is a schematic diagram of the clamping component structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the cross-sectional structure of the conical sleeve of this utility model;

[0021] Figure 4 This utility model Figure 3 Schematic diagram of the structure of region A in the middle.

[0022] In the diagram: 1. Base; 2. Clamping assembly; 201. Fixing plate; 202. Air compressor; 203. Movable plate; 204. Conical sleeve; 205. Mounting plate; 206. Bidirectional screw; 207. Movable block; 208. Support rod; 3. Guide rail; 4. Pressure gauge; 5. Rubber ring; 6. Ball valve body; 7. Pipeline; 8. Hydraulic press; 9. Air compressor; 10. Vertical plate. Detailed Implementation

[0023] like Figures 1-4 As shown, this utility model provides a technical solution: a pressure testing device for ball valve testing, including a base 1, a testing component on the top of the base 1, a ball valve body 6 on the top of the base 1, and a clamping component 2 on the top of the base 1. The clamping component 2 includes a fixed plate 201, a pneumatic compressor 202, a movable plate 203, a conical sleeve 204, a mounting plate 205, a bidirectional screw 206, a movable block 207, and a support rod 208.

[0024] In one embodiment of this utility model, a vertical plate 10 is fixedly connected to the side wall of the base 1, a pneumatic compressor 202 is fixedly connected to the side wall of the vertical plate 10, a movable plate 203 is fixedly connected to the output end of the pneumatic compressor 202, a conical sleeve 204 is fixedly connected to the end of the movable plate 203 away from the pneumatic compressor 202, a guide rail 3 is fixedly connected to the side wall of the vertical plate 10, the end of the guide rail 3 away from the vertical plate 10 is fixedly connected to the side wall of the fixed plate 201, and the guide rail 3 is slidably connected to the movable plate 203.

[0025] A mounting plate 205 is fixedly connected to the side wall of the fixed plate 201. A double-ended screw 206 is sleeved on the side wall of the mounting plate 205. The double-ended screw 206 is threadedly connected to the movable block 207. A support rod 208 is fixedly connected to the side wall of the movable block 207. The side walls of the fixed plate 201, the movable plate 203, and the vertical plate 10 are provided with slots. The support rod 208 is slidably connected to the slots. The slots limit the movement direction of the support rod 208, so that the support rod 208 can only move laterally.

[0026] Two sets of conical sleeves 204 are provided. The outer wall of the conical sleeve 204 is inserted into the ball valve body 6. One set of conical sleeves 204 is fixedly connected to the side wall of the movable plate 203. A pressure gauge 4 is fixedly connected to the top of the set of conical sleeves 204. The pressure gauge 4 is used to display the pressure inside the ball valve body 6, thereby judging the sealing degree of the ball valve body 6. The test assembly includes a pipe 7. Another set of conical sleeves 204 is fixedly connected to the side wall of the fixed plate 201. The pipe 7 is fixedly connected to the top of the other set of conical sleeves 204. A water press 8 and an air compressor 9 are fixedly connected to the end of the pipe 7 away from the conical sleeves 204. The water press 8 and the air compressor 9 are fixedly connected to the top end face of the base 1.

[0027] Align the two ends of the ball valve body 6 with the conical sleeve 204, and then the pneumatic compressor 202 pushes the movable plate 203, so that the conical sleeve 204 is inserted into the two ends of the ball valve body 6, making the outer wall of the conical sleeve 204 interference fit with the ball valve body 6, thereby realizing the installation of the ball valve body 6. The conical sleeve 204 has a self-centering function, and its conical outer contour can guide the ball valve to automatically center and align. When the movable plate 203 pushes the conical sleeve 204 to insert, it can complete the synchronous centering and positioning of the two ends of the ball valve in a short time, eliminating manual alignment and repeated adjustments, greatly improving the clamping efficiency before pressure testing, and is especially suitable for batch operation. The conical outer wall forms an interference fit with the inner cavity of the ball valve, and it is not easy to loosen or leak even when subjected to water pressure or air pressure impact. It can ensure sealing and structural stability during high-pressure testing, prevent medium leakage or ball valve slippage, automatically adapt to different inner diameter pipes, and at the same time make the device adaptable to welded ball valves or flanged ball valves.

[0028] After the conical sleeve 204 clamps the valve, the bidirectional screw 206 is rotated. Since the movable block 207 abuts against the side wall of the fixed plate 201, the bidirectional screw 206 rotates, causing the movable block 207 and the support rod 208 to move towards each other. This causes the support rod 208 to abut against the bottom of the ball valve body 6, providing vertical upward support force. This prevents the ball valve from sliding or dislodging due to water pressure or air pressure impact during pressure testing, thus improving clamping accuracy and structural stability.

[0029] Then, by using air compressor 9 and water compressor 8, air is pressurized and liquid is injected into the ball valve body 6 in sequence. The air tightness and liquid tightness of the ball valve are determined by observing the reading of pressure gauge 4.

[0030] In addition, a rubber ring 5 is fixedly connected to the side wall of the conical sleeve 204. Several sets of rubber rings 5 ​​are arranged at equal intervals on the side wall of the conical sleeve 204. The cross-section of the rubber ring 5 is trapezoidal. When the conical sleeve 204 is inserted into the ball valve body 6, the rubber ring 5 will be radially compressed, tightly fitting the gap between the inner wall of the ball valve and the outer wall of the conical sleeve 204, achieving a highly reliable seal, preventing leakage during air pressure or water pressure testing, and protecting the inner wall of the ball valve body 6 from damage, preventing the risk of friction scratches or jamming that may occur if the conical sleeve 204 and the inner wall of the ball valve body 6 are in direct contact.

[0031] In this invention, during use, the two ends of the ball valve body 6 are aligned with the conical sleeve 204. Then, the pneumatic compressor 202 pushes the movable plate 203, causing the conical sleeve 204 to be inserted into both ends of the ball valve body 6, so that the outer wall of the conical sleeve 204 is press-fitted with the ball valve body 6, thereby realizing the installation of the ball valve body 6. The conical sleeve 204 has a self-centering function, and its conical outer contour can guide the ball valve to automatically center and align. Rotating the bidirectional screw 206, due to the movable block 207 and the fixed plate 203, The side wall of 01 abuts, causing the bidirectional screw 206 to rotate and drive the movable block 207 and the support rod 208 to move towards each other, so that the support rod 208 abuts against the bottom of the ball valve body 6, providing vertical upward support force to prevent the ball valve from sliding or dislodging due to water pressure or air pressure impact during pressure testing. Then, the air compressor 9 and the water compressor 8 are used to pressurize the air and inject liquid to pressurize the ball valve body 6 in sequence. By observing the reading of the pressure gauge 4, the air tightness and liquid tightness of the test ball valve are determined.

[0032] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A pressure testing device for ball valve testing, comprising a base (1), wherein a testing component is disposed on the top of the base (1), and a ball valve body (6) is disposed on the top of the base (1), characterized in that: The base (1) is provided with a clamping assembly (2) on its top, the clamping assembly (2) comprising: A pneumatic compressor (202) has a movable plate (203) fixedly connected to its output end, and a conical sleeve (204) fixedly connected to the end of the movable plate (203) away from the pneumatic compressor (202). A fixed plate (201) is fixedly connected to a mounting plate (205) on its side wall. A double-ended screw (206) is sleeved on the side wall of the mounting plate (205). The double-ended screw (206) is threadedly connected to a movable block (207). A support rod (208) is fixedly connected to the side wall of the movable block (207).

2. The pressure testing device for ball valve testing according to claim 1, characterized in that: A vertical plate (10) is fixedly connected to the side wall of the base (1), and the pneumatic compressor (202) is fixedly connected to the side wall of the vertical plate (10).

3. The pressure testing device for ball valve testing according to claim 2, characterized in that: The side wall of the vertical plate (10) is fixedly connected to a guide rail (3). The end of the guide rail (3) away from the vertical plate (10) is fixedly connected to the side wall of the fixed plate (201). The guide rail (3) is slidably connected to the movable plate (203).

4. The pressure testing device for ball valve testing according to claim 1, characterized in that: The side walls of the fixed plate (201), the movable plate (203) and the vertical plate (10) are provided with slots, and the supporting rod (208) is slidably connected to the slots.

5. The pressure testing device for ball valve testing according to claim 1, characterized in that: The number of the conical sleeves (204) is set in two sets. The outer wall of the conical sleeves (204) is inserted into the ball valve body (6). One set of the conical sleeves (204) is fixedly connected to the side wall of the movable plate (203). A pressure gauge (4) is fixedly connected to the top of the set of conical sleeves (204).

6. The pressure testing device for ball valve testing according to claim 5, characterized in that: The test assembly includes a pipe (7), another set of conical sleeves (204) is fixedly connected to the side wall of the fixing plate (201), the pipe (7) is fixedly connected to the top of the other set of conical sleeves (204), and a water press (8) and an air compressor (9) are fixedly connected to the end of the pipe (7) away from the conical sleeves (204). The water press (8) and the air compressor (9) are fixedly connected to the top end face of the base (1).

7. The pressure testing device for ball valve testing according to claim 1, characterized in that: The side wall of the conical sleeve (204) is fixedly connected with a rubber ring (5), and the number of rubber rings (5) is set in several groups, with the several groups of rubber rings (5) evenly spaced on the side wall of the conical sleeve (204).

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