Pressure resistance testing device for pipeline and ball valve

Abstract

The utility model discloses a pipeline and ball valve compression resistance testing device, which relates to the technical field of valve testing and comprises a ball valve, flange plates are arranged on two sides of the ball valve, and pipelines are arranged on the flange plates on two sides. A pressure gauge is arranged on the pipeline on one side, a fixing pipe is arranged on the pipeline on the other side, first sealing assemblies are arranged on the pipelines on the two sides, the pressure gauge and the fixing pipe are located between the first sealing assemblies on the two sides, a second sealing assembly is arranged in the fixing pipe, a connecting pipe fitting is arranged on the fixing pipe, and the pipelines on the two sides are sealed through the first sealing assemblies. Then the connecting pipe fitting and the fixing pipe are installed together, ventilation is stopped after enough gas is introduced into the pipeline and the ball valve through the gas pump, and the pressure value change of the pressure gauge is observed, so that the air tightness condition of the ball valve and the pipeline is judged, and the compression resistance test of the pipeline and the ball valve is completed. Therefore, the sealing performance of the sealing rings between the flange plates on the two sides and the pipelines on the two sides can be obtained, and the test is more comprehensive.

Description

Technical Field

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

[0002] Ball valves are used to control the flow of media within pipelines. Ball valves must pass a testing process before they can be used. One of these tests is to check the pressure the ball valve can withstand. The requirements for ball valve pressure testing are to ensure that the inlet and outlet of the ball valve are closed, and then inject a certain amount of gas or liquid into the ball valve to test the pressure it can withstand.

[0003] CN221260293U discloses a ball valve airtightness testing device, which includes a workbench, a control component installed on the top side of the workbench, the control component including a connecting pipe, a solenoid valve installed on the arc surface of the connecting pipe, a delivery pipe connected to one side of the connecting pipe, a pump installed on the outer wall of the delivery pipe, an inflation box installed on the top side of the workbench, and the input end of the pump connected to the inflation box; CN219641183U discloses a liquid pressure resistance testing device, which includes a body; a fixed sealing plug and a lifting sealing plug, a fixed compression sealing seat fixedly connected to the top of the body, and a lifting compression sealing seat provided on the upper side of the fixed compression sealing seat.

[0004] Existing ball valves have sealing rings between the ball and the valve body, and also between the flanges on both sides of the valve body and the connecting pipes. After long-term use, these sealing rings are prone to leakage due to aging of the sealing materials, vibration wear, or media corrosion. Therefore, ball valves must be subjected to pressure tests regularly after use. However, the existing technologies mentioned above all involve disassembling the ball valve for separate testing, and cannot perform pressure tests on both sides of the pipes and the ball valve. As a result, it is impossible to know the sealing performance of the sealing rings between the flanges on both sides of the valve body and the pipes on both sides. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a pressure testing device for pipelines and ball valves, solving the problems existing in the prior art.

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution: a pressure testing device for pipes and ball valves, including a ball valve, wherein flanges are provided on both sides of the ball valve, and pipes are provided on both flanges;

[0007] A pressure gauge is installed on one side of the pipeline, and a fixed pipe is installed on the other side of the pipeline. A sealing component 1 is installed on both sides of the pipeline, and the pressure gauge and the fixed pipe are located between the two sealing components 1. A sealing component 2 is installed inside the fixed pipe, and a connecting pipe is installed on the fixed pipe. The connecting pipe is connected to the air pump.

[0008] Preferably, the sealing assembly includes a fixing box disposed on the pipe, a screw extending vertically through the fixing box, a knob disposed at the top of the screw, a sealing plate rotatably connected to the bottom of the screw and slidably connected inside the fixing box, and a through groove that fits against the sealing plate being opened at the top of the pipe.

[0009] Preferably, the second sealing assembly includes an installation rod disposed inside a fixed tube, a guide rod disposed at the top of the installation rod, a sealing block slidably sleeved on the guide rod, a rubber sleeve disposed on the outside of the sealing block, and an opening disposed at the top of the fixed tube, the diameter of the opening being smaller than the diameter of the fixed tube.

[0010] Preferably, the bottom of the pipe opening is provided with an extension portion, and the diameter of the extension portion is larger than the diameter of the pipe opening.

[0011] Preferably, the connecting pipe includes a connecting pipe screwed to the top of the outer side of the fixed pipe, a support rod is provided inside the connecting pipe, a ball bearing is provided at the bottom of the support rod to contact the top of the sealing block, a bearing is provided at the top of the connecting pipe and connected to the top pipe, a telescopic pipe is connected between the top pipe and the air pump, a nut is provided on the outer wall of the connecting pipe, and a retaining ring is provided on the outside of the fixed pipe to contact both the nut and the connecting pipe.

[0012] Preferably, the air pump is mounted on the frame.

[0013] This invention provides a pressure testing device for pipelines and ball valves. Compared with the prior art, it has the following advantages:

[0014] 1. The pressure testing device for this pipeline and ball valve seals the pipelines on both sides using a sealing component. Then, the connecting fittings and fixed pipes are assembled together. Sufficient gas is introduced into the pipeline and ball valve using an air pump, and then the gas supply is stopped. The pressure change of the pressure gauge is observed to determine the airtightness of the ball valve and pipeline, thus completing the pressure test of the pipeline and ball valve together. This allows for a more comprehensive assessment of the sealing performance of the sealing rings between the flanges on both sides and the pipelines on both sides.

[0015] 2. The pressure testing device for the pipeline and ball valve can automatically squeeze the sealing component two to allow air to pass through when the connecting pipe fittings are installed together with the fixed pipe. After the connecting pipe fittings are removed, the sealing component two can automatically seal the pipe opening to prevent fluid from spilling out. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a cross-sectional schematic diagram of the sealing component and the pipe of this utility model;

[0018] Figure 3 This is a schematic diagram of the sealing component 2 and the connecting pipe of this utility model;

[0019] Figure 4 This is a schematic diagram of the fixed tube, the tube opening, and the extension part of this utility model.

[0020] In the diagram: 1. Ball valve; 2. Flange; 3. Pipeline; 4. Pressure gauge; 5. Fixed pipe; 6. Air pump; 7. Fixing box; 8. Screw; 9. Knob; 10. Sealing plate; 11. Through groove; 12. Mounting rod; 13. Guide rod; 14. Spring; 15. Sealing block; 16. Rubber sleeve; 17. Pipe port; 18. Extension section; 19. Connecting pipe; 20. Nut; 21. Retaining ring; 22. Support rod; 23. Ball bearing; 24. Bearing; 25. Jacking pipe; 26. Telescopic pipe; 27. Frame. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] See Figures 1-4 This utility model provides the following two technical solutions:

[0023] First embodiment: A pressure testing device for pipes and ball valves, including a ball valve 1, with flanges 2 on both sides of the ball valve 1, and pipes 3 on both flanges 2.

[0024] A pressure gauge 4 is installed on one side of the pipe 3, and a fixed pipe 5 is installed on the other side of the pipe 3. A sealing component 1 is installed on both sides of the pipe 3, and the pressure gauge 4 and the fixed pipe 5 are located between the two sealing components 1. A sealing component 2 is installed inside the fixed pipe 5, and a connecting pipe is installed on the fixed pipe 5. The connecting pipe is connected to the air pump 6.

[0025] The sealing assembly includes a fixed box 7 installed on the pipe 3. A screw 8 runs vertically through the fixed box 7. A knob 9 is installed at the top of the screw 8. A sealing plate 10 is rotatably connected to the bottom of the screw 8 and slidably connected inside the fixed box 7. A through groove 11 is opened at the top of the pipe 3 to fit with the sealing plate 10. Rotating the knob 9 causes the screw 8 to rotate on the sealing plate 10, thereby pushing the sealing plate 10 down through the guide of the fixed box 7, so that it passes through the through groove 11 and seals the pipe 3.

[0026] The second sealing assembly includes an installation rod 12 disposed inside the fixed tube 5. A guide rod 13 is provided at the top of the installation rod 12. A sealing block 15 is slidably sleeved on the guide rod 13. A rubber sleeve 16 is provided on the outside of the sealing block 15. A pipe opening 17 is provided at the top of the fixed tube 5. The diameter of the pipe opening 17 is smaller than the diameter of the fixed tube 5 so that the sealing block 15 will not seal the fixed tube 5 after it moves down. An extension 18 is provided at the bottom of the pipe opening 17, and the diameter of the extension 18 is larger than the diameter of the pipe opening 17 so that the rubber sleeve 16 can easily enter the pipe opening 17 through the extension 18 after the sealing block 15 moves up.

[0027] The connecting pipe includes a connecting pipe 19 screwed to the top of the outside of the fixed pipe 5. A support rod 22 is provided inside the connecting pipe 19. A ball bearing 23 is provided at the bottom of the support rod 22, which contacts the top of the sealing block 15. A bearing 24 is provided at the top of the connecting pipe 19, and the bearing 24 is connected to the top pipe 25. A telescopic pipe 26 connects the top pipe 25 and the air pump 6. When the connecting pipe 19 is taken out and rotated to be fixed on the fixed pipe 5, the ball bearing 23 squeezes the sealing block 15, which can drive the spring 14 to compress and push the sealing block 15 away from the pipe opening 17. When the connecting pipe 19 is rotated, the bearing 24 does not need to drive the top pipe 25 to rotate. In order to facilitate the rotation of the connecting pipe 19, a nut 20 is provided on the outer wall of the connecting pipe 19. In order to support the connecting pipe 19 and the nut 20, a retaining ring 21 is provided on the outside of the fixed pipe 5, which contacts both the nut 20 and the connecting pipe 19.

[0028] The second embodiment differs from the first embodiment in that the air pump 6 is mounted on the frame 27, which makes it easier to fix the air pump 6 in place.

[0029] Furthermore, all content not described in detail in this specification is existing technology known to those skilled in the art, and the model parameters of each electrical appliance are not specifically limited; conventional equipment can be used.

[0030] In use, the sealing plates 10 on both sides are lowered to seal the pipe 3, and then the connecting pipe fittings are installed on the fixed pipe 5. This will prevent the sealing block 15 from sealing the pipe opening 17. In this way, the air pump 6 can pressurize the pipe 3 and the ball valve 1. After sufficient gas is introduced, the gas supply is stopped, and the pressure value change of the pressure gauge 4 is observed to determine the airtightness of the ball valve 1 and the pipe 3. This completes the pressure test of the pipe 3 and the ball valve 1 together, thereby revealing the sealing performance of the sealing rings between the flanges 2 on both sides and the pipes 3 on both sides. The test is more comprehensive.

[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pressure testing device for pipes and ball valves, characterized in that: Including ball valve (1), both sides of the ball valve (1) are provided with flange plate (2), both sides flange plate (2) are provided with pipeline (3); One side pipeline (3) is provided with pressure gauge (4), the other side pipeline (3) is provided with fixed pipe (5), both sides pipeline (3) are provided with sealing assembly one, and pressure gauge (4) and fixed pipe (5) are located between both sides sealing assembly one, the fixed pipe (5) is provided with sealing assembly two in, and the fixed pipe (5) is provided with connecting pipe fitting, the connecting pipe fitting is communicated with air pump (6).

2. A compression testing device for a pipe and ball valve according to claim 1, wherein: The sealing assembly one includes the fixed box (7) arranged on the pipeline (3), the fixed box (7) is vertically penetrated with the screw rod (8), the screw rod (8) top is provided with knob (9), the bottom of the screw rod (8) is rotatably connected with the sealing plate (10) slidably connected in the fixed box (7), the top of the pipeline (3) is provided with the through slot (11) abutting with the sealing plate (10).

3. A compression testing device for a pipe and ball valve according to claim 1, wherein: The sealing assembly two includes the installation rod (12) arranged in the fixed pipe (5), the top of the installation rod (12) is provided with the guide rod (13), the guide rod (13) is slidably sleeved with the sealing block (15), the outer side of the sealing block (15) is provided with the rubber sleeve (16), the top of the fixed pipe (5) is provided with the pipe mouth (17), the diameter of the pipe mouth (17) is less than the pipe diameter of the fixed pipe (5).

4. A compression testing device for a pipe and ball valve according to claim 3, wherein: The bottom of the pipe mouth (17) is provided with the expansion part (18), and the diameter of the expansion part (18) is greater than the diameter of the pipe mouth (17).

5. A compression testing device for a pipe and ball valve according to claim 3, wherein: The connecting pipe fitting includes the connecting pipe (19) screwed on the top of the outer side of the fixed pipe (5), the inside of the connecting pipe (19) is provided with the support rod (22), the bottom of the support rod (22) is provided with the ball (23) in contact with the top of the sealing block (15), the top of the connecting pipe (19) is provided with the bearing (24), and the bearing (24) is connected with the top pipe (25), the top pipe (25) is communicated with the air pump (6) between the telescopic pipe (26), the outer wall of the connecting pipe (19) is provided with the nut (20), the outside of the fixed pipe (5) is provided with the blocking ring (21) in contact with the nut (20) and the connecting pipe (19).

6. A compression testing device for a pipe and ball valve according to claim 1, wherein: The air pump (6) is arranged on the rack (27).

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