Hydrostatic test device capable of conveniently detecting sealing performance of flange type valve

Abstract

The utility model discloses a water pressure test device capable of conveniently detecting the sealing performance of a flange type valve, and solves the problems of much material waste, high labor intensity and long consumed time in the prior art. A portal frame (3) is fixedly arranged on a square detection platform plate (2), a central through hole (10) is formed in the center of the square detection platform plate (2) right below a top end cross beam (4) of the portal frame (3), a flange type valve (6) is arranged on the square detection platform plate (2) in a mode that a lower port is buckled on the central through hole (10), a pressing plate (8) is arranged on an upper port of the flange type valve (6), and the flange type valve (6) is arranged on the square detection platform plate (2). A jack (9) is arranged between the pressing plate and the top end cross beam (4); the lower port of the central through hole (10) is connected with a pressurizing water supply pipe (11), and the other end of the pressurizing water supply pipe is connected with a pressurizing water pump (15); the device is suitable for flange valves with different diameters and specifications, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of valve sealing performance detection, in particular to a water pressure test device for detecting the sealing performance of flange valves. Background Art

[0002] Valves are control mechanisms on fluid pipelines, and their basic function is to connect or cut off the flow of pipeline media. They are widely used in professional fields such as electricity, petroleum, and chemical industry. Due to quality problems of valves, phenomena such as "escape, bubbling, dripping, and leakage" often occur. Before installing the valve, a water pressure test must be carried out to detect its sealing and ensure that there is no leakage. When performing a water pressure test on flange valves at the construction site, two counter-flanges that match the valves are generally used. Two pipes are installed on the counter-flanges, the end of one pipe is sealed with a steel plate, and an exhaust valve is installed on the pipe; a tee is installed on the other pipe, one port of the tee is connected to a pressure pump, and the other port is connected to a pressure gauge. ; Install these two components on the flanges at both ends of the valve with bolts, use a pressure pump to apply water pressure, and use the exhaust valve to drain the pipe at the other end, observe the pressure indication of the pressure gauge, stop pressurizing after the pressure reaches the specified value of the pressure test, and observe whether there is a pressure drop on the pressure gauge; This water pressure test method requires matching corresponding counter-flanges for valves of different diameters, and making pressure test components, and the flange bolts must be installed and disassembled for each water pressure test, which has the disadvantages of high material waste, high labor intensity, and long time consumption; How to develop a convenient flange valve water pressure test device to facilitate on-site operation is a problem that needs to be solved on-site. Summary of the Invention

[0003] The utility model provides a water pressure test device which can conveniently detect the sealing performance of flange valves, and solves the technical problems of the prior art such as large waste of materials, high labor intensity and long time consumption.

[0004] The utility model solves the above technical problems through the following technical solutions:

[0005] A water pressure test device for conveniently detecting the sealing performance of flange valves comprises a square detection platform plate, a jack, a flange valve and a pressure water pump. A gantry is fixedly arranged on the square detection platform plate, a center through hole is arranged at the center of the square detection platform plate just below the top crossbeam of the gantry, the flange valve is arranged on the square detection platform plate in a manner that the lower end is buckled onto the center through hole, a pressure plate is arranged on the upper end of the flange valve, and a jack is arranged between the pressure plate and the top crossbeam; a pressure water supply pipe is connected to the lower end of the center through hole, and a pressure water pump is connected to the other end of the pressure water supply pipe.

[0006] A three-way pipe fitting and a relief valve are respectively provided on the pressure water supply pipe, and a water pressure gauge is connected to the third port of the three-way pipe fitting; a first rubber sealing gasket is provided between the square detection platform plate and the lower port of the flange valve, and a second rubber sealing gasket is provided between the upper port of the flange valve and the pressure plate; platform legs are provided on the lower bottom surface of the square detection platform plate.

[0007] The utility model is suitable for flange valves of different diameters and specifications, shortens the valve water pressure test time, and improves work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a structural diagram of the utility model;

[0009] Figure 2 It is a structural schematic diagram of the square detection platform plate 2 of the present invention. DETAILED DESCRIPTION

[0010] The utility model is described in detail below with reference to the accompanying drawings:

[0011] A water pressure test device for conveniently detecting the sealing performance of flange valves comprises a square detection platform plate 2, a jack 9, a flange valve 6 and a pressure water pump 15. A gantry 3 is fixedly arranged on the square detection platform plate 2, a center through hole 10 is arranged at the center of the square detection platform plate 2 just below the top crossbeam 4 of the gantry 3, the flange valve 6 is arranged on the square detection platform plate 2 in a manner that the lower end is buckled onto the center through hole 10, a pressure plate 8 is arranged on the upper end of the flange valve 6, and a jack 9 is arranged between the pressure plate 8 and the top crossbeam 4; a pressure water supply pipe 11 is connected to the lower end of the center through hole 10, and a pressure water pump 15 is connected to the other end of the pressure water supply pipe 11; the inner cavity of the flange valve 6 forms a pressure-sealed space through the center through hole 10, the pressure water supply pipe 11 and the pressure water pump 15.

[0012] A three-way pipe fitting 12 and a relief valve 14 are respectively provided on the pressurized water supply pipe 11, and a water pressure gauge 13 is connected to the third port of the three-way pipe fitting 12; a first rubber sealing gasket 5 is provided between the square detection platform plate 2 and the lower port of the flange valve 6, and a second rubber sealing gasket 7 is provided between the upper port of the flange valve 6 and the pressure plate 8; a platform support leg 1 is provided on the lower bottom surface of the square detection platform plate 2.

[0013] The implementation steps of this utility model are as follows:

[0014] The first step is to place the first rubber sealing gasket 5 on the square testing platform plate 2, align the center hole of the first rubber sealing gasket 5 with the center through hole 10, and vertically place the flange valve 6 to be pressurized on the first rubber sealing gasket 5 so that the center axis of the flange valve 6 coincides with the center axis of the first rubber sealing gasket 5;

[0015] Step 2: Place the second rubber sealing gasket 7 and the pressure plate 8 on the upper port of the flange valve 6;

[0016] The third step is to add water to the pressure pump 15, open the pressure relief valve 14, and start the pressure pump 15. After water flows out of the sealing portion between the flange valve 6 and the first rubber sealing gasket 7 and the air is exhausted, stop the pressure pump 15.

[0017] Step 4: A jack 9 is installed between the pressure plate 8 and the top crossbeam 4, so that the central axis of the jack 9 coincides with the central axis of the flange valve 6. Then, the jack 9 is started to press and fix the flange valve 6 between the square detection platform plate 2 and the top crossbeam 4;

[0018] Step 5. Close the pressure relief valve 14, restart the pressure pump 15, observe the pressure of the water pressure gauge 13, gradually increase the pressure to the specified value of the pressure test, stop pressurizing, maintain a certain time according to the requirements of the water pressure test, observe whether there is a pressure drop in the water pressure gauge 13, and whether the valve has leakage and deformation;

[0019] Step 6: After the test is completed, open the pressure relief valve 14 to relieve pressure, loosen the jack 9, and finally take out the flange valve 6 to carry out the water pressure test of the next valve.

Claims

1. A water pressure test device for conveniently detecting the sealing performance of flange valves, comprising a square detection platform plate (2), a jack (9), a flange valve (6) and a pressure water pump (15), wherein a gantry (3) is fixedly arranged on the square detection platform plate (2), and characterized in that: A central through hole (10) is provided at the center of the square detection platform plate (2) directly below the top crossbeam (4) of the gantry (3); a flange valve (6) is provided on the square detection platform plate (2) in a manner such that the lower end thereof is buckled on the central through hole (10); a pressure plate (8) is provided on the upper end of the flange valve (6); a jack (9) is provided between the pressure plate (8) and the top crossbeam (4); a pressure water supply pipe (11) is connected to the lower end of the central through hole (10), and a pressure water pump (15) is connected to the other end of the pressure water supply pipe (11).

2. A hydraulic pressure test device for conveniently detecting the sealing performance of flange valves according to claim 1, characterized in that: A three-way pipe fitting (12) and a discharge valve (14) are respectively provided on the pressure water supply pipe (11), and a water pressure gauge (13) is connected to the third port of the three-way pipe fitting (12); a first rubber sealing gasket (5) is provided between the square detection platform plate (2) and the lower port of the flange valve (6), and a second rubber sealing gasket (7) is provided between the upper port of the flange valve (6) and the pressure plate (8); and a platform support leg (1) is provided on the lower bottom surface of the square detection platform plate (2).

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