Water supply and water return circulation system of valve sealing pressure test device

Abstract

The utility model provides a water supply and return water circulation system for a valve sealing and pressing test device. The water supply and return water circulation system for the valve sealing and pressing test device comprises a mounting frame, a fixed disc, an extrusion disc, a water containing tank and a pressurizing water tank. According to the water supply and return water circulation system of the valve sealing pressure test device provided by the utility model, through the arrangement of the pressurization water tank and the water containing tank, in the test process, the two ends of the valve are respectively extruded between the fixed disc and the extrusion disc, and the water injection hole is positioned at the opening part at one end of the valve. Then a water outlet pipe on the water containing tank is opened, liquid in the water containing tank can automatically flow into the valve through a water injection hole under the action of gravity, after the valve is filled with water, the water outlet pipe is closed, the pressure testing pump is adopted to pressurize the interior of the valve, and in the operation process, the earlier-stage pressurizing water injection operation can be reduced; and experimental water is recycled in an equipment system, so that water resources are saved, manpower is saved, and the test efficiency is effectively improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of valve detection equipment, and particularly relates to a water supply and return circulation system of a valve sealing pressure test device. Background Art

[0002] The valve sealing pressure test involves tightening the valve between two sealing discs, injecting water into the valve and applying pressure, and observing the changes in internal pressure to test the valve's sealing. When conducting sealing tests on-site, the liquid inside the valve is often directly discharged after the test is completed, resulting in a waste of on-site water resources. Furthermore, during current sealing tests, water is often added and pressure tested manually. When conducting airtightness tests on valves with larger cavities, a manual pressure test pump must be manually pressed to inject water into the valve. The operator must repeatedly press the pressure lever, making the operation labor-intensive and reducing testing efficiency. Utility Model Content

[0003] The embodiment of the utility model provides a water supply and return circulation system for a valve sealing pressure test device, aiming to solve the problems of high labor intensity, low detection efficiency and serious waste of water resources in the valve air tightness pressure test device in the prior art during operation.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is to provide a water supply and return circulation system for a valve sealing pressure test device, comprising:

[0005] A mounting frame, wherein a water receiving tray is mounted on the mounting frame;

[0006] A fixed plate, fixedly mounted on the mounting frame and located above the water receiving plate, wherein an end surface of the fixed plate is provided with a water injection hole for injecting water into the valve;

[0007] An extrusion plate, movably mounted on the mounting frame, for squeezing the valve onto the fixed plate;

[0008] A water storage tank is mounted on the top of the mounting frame, a water outlet pipe connected to the water injection hole is provided at the bottom of the water storage tank, and the height of the water storage tank is higher than the height of the water injection hole;

[0009] A pressurized water tank is installed on the mounting frame. A pressure test pump is provided inside the pressurized water tank, and a water outlet end of the pressure test pump is connected to the water injection hole.

[0010] In a possible implementation, a water injection pipe connected to the water injection hole is installed at one end of the fixed plate, and a pressure gauge for detecting the water pressure inside the water injection pipe and a first control valve for controlling the flow state of the water injection pipe are installed on the water injection pipe.

[0011] In one possible implementation, the water outlet pipe on the water tank and the water outlet end on the pressure test pump are both connected to the first control valve, and a second control valve for controlling the flow state of the water outlet pipe is installed on the water outlet pipe, and the water outlet end of the pressure test pump is connected to a third control valve for controlling the water outlet state of the pressure test pump.

[0012] In one possible implementation, a drain pipe is also installed on the fixed plate, and an exhaust pipe is also installed on the fixed plate. The exhaust pipe is connected to an exhaust hole, and the exhaust hole is located on the end face of the fixed plate, and the height of the exhaust hole is higher than the water injection hole. A fourth control valve for controlling the flow state of the exhaust pipe is installed on the exhaust pipe.

[0013] In a possible implementation, the height of the pressurized water tank is lower than that of the water receiving tray, and a water pipe is provided at the bottom of the water receiving tray, and the water pipe is connected to the pressurized water tank.

[0014] In a possible implementation, a return pipe is provided between the pressurized water tank and the water holding tank, and a delivery pump for delivering the liquid in the pressurized water tank to the water holding tank is installed on the return pipe.

[0015] In a possible implementation, a one-way valve is further installed on the return pipe to prevent liquid from flowing back into the pressurized water tank.

[0016] In a possible implementation, an open structure is provided on the top of the pressurized water tank, a cover plate for covering the open structure is detachably mounted on the pressurized water tank, and the pressure test pump is mounted on the cover plate.

[0017] Compared with the prior art, the solution shown in the embodiment of the present application is provided with a mounting frame, a water receiving tray is installed on the mounting frame, a fixed plate and an extrusion plate are provided above the water receiving tray, and the position of the extrusion plate on the mounting frame has the freedom to move in the direction close to or away from the fixed plate. The present application provides a water storage tank, the height of which is higher than the height of the water injection hole on the fixed plate and is connected to the water injection hole. A pressurized water tank is installed on one side of the mounting frame, and a pressure test pump is installed on the pressurized water tank. The pressure test pump is used to pressurize the liquid inside the pressurized water tank into the water injection hole. During the test, the two ends of the valve are squeezed between the fixed plate and the extrusion plate respectively, and the water injection hole is located at the mouth of one end of the valve. Then open the outlet pipe on the water tank. Under the action of gravity, the liquid inside the water tank can automatically flow into the valve through the water injection hole. After the valve is filled with water, close the outlet pipe and use a pressure test pump to pressurize the inside of the valve. During the operation, the preliminary pressure injection operation can be reduced. The experimental water is recycled in the equipment system, saving on-site water resources. It can also save manpower during the experiment and effectively improve the test efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic structural diagram of a water supply and return circulation system of a valve sealing pressure test device provided in an embodiment of the present invention;

[0019] Figure 2 A schematic diagram of the installation structure of the water injection pipe provided in an embodiment of the utility model;

[0020] Figure 3 This is a schematic diagram of the installation structure of the pressurized water tank provided in an embodiment of the utility model.

[0021] Description of reference numerals:

[0022] 1. Mounting frame; 11. Water collection tray; 2. Squeeze tray; 3. Fixed tray; 31. Water filling pipe; 311. Pressure gauge; 312. First control valve; 32. Exhaust pipe; 321. Fourth control valve; 4. Water storage tank; 41. Second control valve; 5. Pressurized water tank; 51. Cover plate; 6. Pressure test pump; 61. Third control valve; 7. Water guide pipe; 71. Delivery pump; 8. One-way valve. DETAILED DESCRIPTION

[0023] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0024] Please also refer to Figures 1 to 3, the water supply and return circulation system of the valve sealing pressure test device provided by the present invention is now described. The water supply and return circulation system of the valve sealing pressure test device includes a mounting frame 1, a fixed plate 3, an extrusion plate 2, a water tank 4 and a pressurized water tank 5. A water receiving tray 11 is installed on the mounting frame 1; the fixed plate 3 is fixedly mounted on the mounting frame 1 and is located above the water receiving tray 11, and the end face of the fixed plate 3 is provided with a water injection hole for injecting water into the valve; the extrusion plate 2 is movably mounted on the mounting frame 1 and is used to squeeze the valve onto the fixed plate 3; the water tank 4 is mounted on the top of the mounting frame 1, and a water outlet pipe connected to the water injection hole is provided at the bottom of the water tank 4, and the height of the water tank 4 is higher than the height of the water injection hole; the pressurized water tank 5 is mounted on the mounting frame 1, and a pressure test pump 6 is provided inside the pressurized water tank 5, and the water outlet end of the pressure test pump 6 is connected to the water injection hole.

[0025] The valve sealing pressure test device provided in this embodiment has a water supply and return circulation system. Compared with the prior art, it is provided with a mounting frame 1, a water receiving tray 11 is installed on the mounting frame 1, and a fixed plate 3 and an extrusion plate 2 are provided above the water receiving tray 11. The position of the extrusion plate 2 on the mounting frame 1 has the freedom to move in the direction close to or away from the fixed plate 3. In this application, a water tank 4 is provided, the height of the water tank 4 is higher than the height of the water injection hole on the fixed plate 3 and is connected to the water injection hole. A pressurized water tank 5 is installed on one side of the mounting frame 1, and a pressure test pump 6 is installed on the pressurized water tank 5. The pressure test pump 6 is used to pressurize the liquid inside the pressurized water tank 5 into the water injection hole. During the test, the two ends of the valve are squeezed between the fixed plate 3 and the extrusion plate 2 respectively, and the water injection hole is located at the mouth of one end of the valve. Then open the water outlet pipe on the water tank 4. Under the action of gravity, the liquid inside the water tank 4 can automatically flow into the valve through the water injection hole. After the valve is filled with water, close the water outlet pipe and use the pressure test pump 6 to pressurize the inside of the valve. During the operation, the early pressure injection operation can be reduced, saving manpower and effectively improving the test efficiency.

[0026] Specifically, in this embodiment, the pressure test pump 6 is a manual pressure test pump 6 , and the specific structure is prior art and will not be elaborated here.

[0027] Preferably, in this embodiment, the water receiving tray 11 is connected to the water storage tank 4 and the pressurized water tank 5 through water pipes, and has its own pressurized pump, which can realize the internal circulation of the experimental liquid, and the entire experimental process does not require water replenishment.

[0028] In some embodiments, the fixed plate 3 may be formed as follows: Figure 2 The structure shown. Figure 2A water injection pipe 31 connected to the water injection hole is installed at one end of the fixed disk 3. A pressure gauge 311 for detecting the water pressure inside the water injection pipe 31 and a first control valve 312 for controlling the flow state of the water injection pipe 31 are installed on the water injection pipe 31. The water injection pipe 31 is fixedly installed at the end of the fixed disk 3 away from the extrusion disk 2. The water outlet end of the water tank 4 and the pressure test pump 6 are both connected to the water injection pipe 31, and a first control valve 312 and a pressure gauge 311 are installed on the water injection pipe 31. The pressure gauge 311 is located at the output end of the first control valve 312. After the pressure test pump 6 completes the pressurization, close the first control valve 312 and record the value on the pressure gauge 311, which is the initial value of the test. It has a simple structure and is easy to operate.

[0029] In some embodiments, the water tank 4 may be Figure 1 、 Figure 2 and Figure 3 See also Figure 1 、 Figure 2 and Figure 3 The water outlet pipe on the water holding tank 4 and the water outlet end on the pressure test pump 6 are both connected to the first control valve 312, and a second control valve 41 for controlling the flow state of the water outlet pipe is installed on the water outlet pipe. The water outlet end of the pressure test pump 6 is connected to a third control valve 61 for controlling the water outlet state of the pressure test pump 6. The first control valve 312 is used to cut off the connection between the water outlet pipe and the pressure test pump 6 and the water injection hole. The setting of the second control valve 41 can close the second control valve 41 when the pressure test pump 6 pressurizes the interior of the valve to prevent liquid from flowing into the water holding tank 4. The setting of the third control valve 61 can prevent liquid from flowing into the pressurized water tank 5 when the water holding tank 4 injects water into the interior of the valve. It can ensure effective and stable water injection and pressurization into the valve body.

[0030] In some embodiments, the fixed plate 3 may be formed as follows: Figure 2 The structure shown. Figure 2 An exhaust pipe 32 is also installed on the fixed disk 3. The exhaust pipe 32 is connected to an exhaust hole. The exhaust hole is located on the end surface of the fixed disk 3, and the height of the exhaust hole is higher than the water injection hole. A fourth control valve 321 is installed on the exhaust pipe 32 for controlling the flow state of the exhaust pipe 32. The exhaust hole is located on the fixed disk 3, and the exhaust hole is set through the fixed disk 3, and the exhaust hole and the exhaust pipe 32 are connected to each other. When the water tank 4 fills water into the interior of the valve, the gas inside the valve can be discharged through the exhaust pipe 32 by opening the fourth control valve 321, which facilitates the flow of liquid into the interior of the valve. At the same time, when the liquid is discharged from the exhaust pipe 32, it can be determined that the internal liquid filling is complete. After closing the fourth control valve 321, the pressure test pump 6 is used to inject liquid into the interior and pressurize it. It has a simple structure and is easy to operate.

[0031] In some embodiments, the pressurized water tank 5 may be Figure 3 The structure shown. Figure 3 The height of the pressurized water tank 5 is lower than that of the water receiving tray 11, and a water conduit 7 is also provided at the bottom of the water receiving tray 11, which is in communication with the pressurized water tank 5. The pressurized water tank 5 is fixedly mounted on one side of the mounting frame 1, and the bottom of the water receiving tray 11 is higher than the bottom of the pressurized water tank 5. The water inlet end of the water conduit 7 is mounted on the side wall of the water receiving tray 11 and is located at the bottom of the water receiving tray 11. The water outlet pipe of the water conduit 7 is in communication with the pressurized water tank 5. After the pressure test is completed, the pressure can be released by opening the fourth control valve 321 on the exhaust pipe 32, and then removing the valve. The liquid inside the valve will flow into the water receiving tray 11 and flow through the water conduit 7 to the pressurized water tank 5 for recycling and reuse.

[0032] In some embodiments, the pressurized water tank 5 and the water storage tank 4 can be Figure 3 The structure shown. Figure 3 A return pipe is also provided between the pressurized water tank 5 and the holding water tank 4. A delivery pump 71 is installed on the return pipe to transport the liquid inside the pressurized water tank 5 to the holding water tank 4. The two ends of the return pipe are connected to the bottom of the pressurized water tank 5 and the bottom of the holding water tank 4, respectively. The delivery pump 71 is installed on the return pipe. When the liquid inside the water receiving tray 11 flows into the pressurized water tank 5, causing the liquid volume inside the pressurized water tank 5 to increase, the delivery pump 71 can pressurize the liquid inside the pressurized water tank 5 and transport it to the holding water tank 4. This prevents the liquid inside the pressurized water tank 5 from overflowing, while ensuring that enough liquid remains in the holding water tank 4 for the next valve test.

[0033] In some embodiments, the return pipe can be Figure 3 The structure shown. Figure 3 The return pipe is also equipped with a one-way valve 8 to prevent liquid from flowing back into the pressurized water tank 5. The height of the holding tank 4 is higher than that of the pressurized water tank 5. The one-way valve 8 prevents liquid from freely falling back into the pressurized water tank 5. When the delivery pump 71 is operating, it can transfer liquid from the pressurized water tank 5 to the holding tank 4. When the delivery pump 71 is stopped, liquid can be prevented from flowing back into the pressurized water tank 5, reducing operator effort.

[0034] In some embodiments, the pressurized water tank 5 may be Figure 3 The structure shown. Figure 3The top of the pressurized water tank 5 is provided with an open structure. A cover plate 51 for covering the open structure is detachably mounted on the pressurized water tank 5. The pressure test pump 6 is mounted on the cover plate 51. There is only one opening at the top of the pressurized water tank 5. The cover plate 51 overlaps the opening and is fixed to the pressurized water tank 5 by bolts. The pressure test pump 6 is mounted on the cover plate 51. Removing the cover plate 51 facilitates the disassembly and assembly of the pressure test pump 6. This also makes it easy to add liquid to the pressurized water tank 5 and to clean the interior of the pressurized water tank 5. The structure is simple and easy to operate.

[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A water supply and return circulation system for a valve sealing pressure test device, characterized in that: include: A mounting frame (1), wherein a water receiving tray (11) is mounted on the mounting frame (1); A fixed plate (3) is fixedly mounted on the mounting frame (1) and is located above the water receiving plate (11); an end surface of the fixed plate (3) is provided with a water injection hole for injecting water into the interior of the valve; A squeeze disc (2) movably mounted on the mounting frame (1) and used for squeezing the valve onto the fixed disc (3); A water storage tank (4) is installed on the top of the mounting frame (1), a water outlet pipe communicating with the water injection hole is provided at the bottom of the water storage tank (4), and the height of the water storage tank (4) is higher than the height of the water injection hole; A pressurized water tank (5) is installed on the mounting frame (1). A pressure test pump (6) is provided inside the pressurized water tank (5). The water outlet end of the pressure test pump (6) is provided in communication with the water injection hole.

2. The water supply and return circulation system of the valve sealing pressure test device according to claim 1, characterized in that: A water injection pipe (31) communicating with the water injection hole is installed at one end of the fixed plate (3); a pressure gauge (311) for detecting the internal water pressure of the water injection pipe (31) and a first control valve (312) for controlling the flow state of the water injection pipe (31) are installed on the water injection pipe (31).

3. The water supply and return circulation system of the valve sealing pressure test device according to claim 2, characterized in that: The water outlet pipe on the water storage tank (4) and the water outlet end of the pressure test pump (6) are both connected to the first control valve (312), and a second control valve (41) for controlling the flow state of the water outlet pipe is installed on the water outlet pipe, and the water outlet end of the pressure test pump (6) is connected to a third control valve (61) for controlling the water outlet state of the pressure test pump (6).

4. The water supply and return circulation system of the valve sealing pressure test device according to claim 1, characterized in that: An exhaust pipe (32) is also installed on the fixed disk (3), and an exhaust hole is provided in communication with the exhaust pipe (32). The exhaust hole is located on the end surface of the fixed disk (3), and the height of the exhaust hole is higher than the water injection hole. A fourth control valve (321) for controlling the flow state of the exhaust pipe (32) is installed on the exhaust pipe (32).

5. The water supply and return circulation system of the valve sealing pressure test device according to claim 1, characterized in that: The height of the pressurized water tank (5) is lower than that of the water receiving tray (11), and a water pipe (7) is provided at the bottom of the water receiving tray (11), and the water pipe (7) is provided in communication with the pressurized water tank (5).

6. The water supply and return circulation system of the valve sealing pressure test device according to claim 5, characterized in that: A return pipe is also provided between the pressurized water tank (5) and the water storage tank (4), and a delivery pump (71) is installed on the return pipe for delivering the liquid inside the pressurized water tank (5) to the inside of the water storage tank (4).

7. The water supply and return circulation system of the valve sealing pressure test device according to claim 6, characterized in that: The return pipe is also provided with a one-way valve (8) for preventing liquid from flowing back into the pressurized water tank (5).

8. The water supply and return circulation system of the valve sealing pressure test device according to claim 1, characterized in that: The top of the pressurized water tank (5) is provided with an open structure, and a cover plate (51) for covering the open structure is detachably mounted on the pressurized water tank (5), and the pressure test pump (6) is mounted on the cover plate (51).

Images