Valve pressure testing device

Abstract

The utility model relates to the field of pressure test, specifically disclose valve pressure testing device, including pressure tester main part, drain valve, pressurized inlet pipe and a plurality of pressure test pipes, pressurized inlet pipe and a plurality of pressure test pipes all communicate with pressure tester main part, drain valve is installed on pressure tester main part or pressurized inlet pipe, still include movable support, movable support fixed mounting is in the downside of pressure tester main part, a plurality of pressure test pipes are detachably connected with valve. The movable support of scheme supports or moves pressure tester main part, makes valve pressure testing device whole body can move to the place of drainage of test environment, when disassembling valve, the water that remains between valve and pressure test pipe can also be discharged fast and accurately, avoids the unorganized flooding of water in test environment.

Description

Technical Field

[0001] This utility model relates to the field of pressure testing technology, and in particular to a valve pressure testing device. Background Technology

[0002] Valve pressure testing is a mandatory test that uses specialized equipment and procedures to apply a specified pressure to the valve cavity to verify whether the valve's strength and sealing performance meet design standards or usage requirements. It can prevent valve shell rupture or seal leakage when subjected to high pressure, high temperature, toxic, harmful, flammable and explosive media, thereby avoiding production accidents, environmental pollution and personal injury, ensuring that the valve can work reliably within its specified service life, and reducing system downtime and economic losses caused by valve failure.

[0003] Currently, valve pressure testing devices are commonly used to conduct pressure sealing performance and strength tests on valves. Hydraulic pump stations are a frequently used power system, providing high-pressure liquid (usually water or oil) for the pressure test. When connecting a conventional valve pressure testing device to the valve under test, the test tube is typically welded to the valve end. Unstable or inaccurate welds can easily lead to water leakage. Furthermore, the main body of the valve pressure testing device generally lacks a pressure relief safety valve, which can easily cause pressure to exceed the specified value during testing, posing a safety risk. The overall mass of the valve pressure testing device is relatively large, making it difficult to move as a whole. Therefore, it is also difficult to move the entire valve pressure testing device during pressure release, which can easily lead to uncontrolled water overflow during pressure release, affecting site usability. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a valve pressure testing device to solve the problem that it is difficult to move the entire valve pressure testing device during pressure testing and water release, which can easily lead to unorganized water overflow and affect the use of the site.

[0005] To achieve the above objectives, the basic solution of this utility model is as follows: a valve pressure testing device, comprising a pressure testing unit body, a drain valve, a pressurized water inlet pipe, and several pressure testing pipes, wherein the pressurized water inlet pipe and the several pressure testing pipes are all connected to the pressure testing unit body, the drain valve is installed on the pressure testing unit body or the pressurized water inlet pipe, and further comprising:

[0006] The movable frame is fixedly installed on the lower side of the pressure tester body;

[0007] Several test tubes and valves are detachably connected.

[0008] The technical principle of this utility model is as follows: After testing the valve using the valve pressure testing device, if the drain valve is far from the drainage point in the environment, the entire valve pressure testing device can be moved. At this time, the moving frame supports or moves the main body of the pressure testing device, allowing the entire valve pressure testing device to be moved to the drainage point in the test environment. Then, the drain valve can be opened to allow water to drain quickly. When disassembling the valve, the water remaining between the valve and the pressure testing pipe can also be drained quickly and accurately, preventing water from spreading uncontrollably in the test environment. At the same time, when testing the valve, the entire valve pressure testing device can also be moved quickly and conveniently, improving the adaptability and mobility of the valve pressure testing device during use.

[0009] Furthermore, several test tubes include:

[0010] Several flange valves with different diameter specifications have reserved test pressure pipes, and the reserved test pressure pipes of the flange valves are detachably connected to the valves;

[0011] Several threaded valves of different diameters have pre-installed pressure test tubes, which are detachably connected to the valves.

[0012] With the above setup, the threaded valve end is screwed onto the end of the threaded valve pre-reserved pressure test tube, and the flanged valve end is bolted onto the end of the flanged valve pre-reserved pressure test tube. Threaded and flanged connections replace welding, which can simulate the real connection structure, making subsequent test results more reliable and improving the stability of the connection between the valve and the pressure test tube.

[0013] Furthermore, it also includes a safety valve, which is connected and installed on the upper side of the pressure tester body.

[0014] The above settings prevent excessive water pressure in the test chamber and valves, maintaining the test water pressure at the standard level and reducing safety risks. When it is necessary to adjust the water pressure during valve testing, the safety valve can be opened to release pressure in the test chamber, allowing for rapid and efficient adjustment of the water volume and pressure in the test chamber. This facilitates the determination of the valve's pressure sealing performance and strength performance under different water pressure parameters.

[0015] Furthermore, it also includes an exhaust valve, which is connected to the upper side of the pressure tester body and is located on the side away from the pressurized water inlet pipe.

[0016] With the above settings, when water is introduced into the pressure tester body, the air vent valve is opened, and air is discharged from the air vent valve, thus preventing air from affecting the pressure sealing performance test and strength test of the valve.

[0017] Furthermore, it also includes several conversion joints, which can be detachably installed between the valve and the flange valve's reserved pressure test pipe.

[0018] With the above settings, the adapter can be adapted to valves of different specifications and structures, making valve testing more interchangeable.

[0019] Furthermore, it also includes a connecting pipe, one end of which is connected to the main body of the pressure tester, and the other end of which is connected to the end of the valve away from the main body of the pressure tester.

[0020] With the above setup, the connecting pipe can ensure consistent pressure at both ends of the valve, improving the accuracy and reliability of pressure sealing performance tests and strength tests.

[0021] Furthermore, it also includes a support frame that can abut against the outer wall of the valve.

[0022] The above settings facilitate stable support for the valve end, reducing the impact of end gravity on the valve end near the test tube, and improving the accuracy and reliability of pressure sealing performance and strength tests.

[0023] Furthermore, it also includes a shut-off valve, which is installed on the pressurized inlet pipe and located between the pressure tester body and the drain valve.

[0024] With the above settings, the shut-off valve can control the timing of adding water to the main body of the pressure tester from the pressurized water inlet pipe, and also facilitates maintaining the corresponding pressure inside the main body of the pressure tester after the shut-off valve is closed, which is convenient for conducting static pressure tests on the valve. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the valve pressure testing device in the axial direction in an embodiment of this utility model.

[0026] In the above attached figures: pressure tester body 10, connecting pipe 101, support frame 102, drain valve 20, pressurized water inlet pipe 30, flange valve reserved pressure test pipe 401, threaded valve reserved pressure test pipe 402, conversion joint 403, movable frame 50, roller 501, safety valve 60, air release valve 70, water shut-off valve 80, valve 90. Detailed Implementation

[0027] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0028] This embodiment is basically as follows: Figure 1 As shown, this utility model embodiment proposes a valve pressure testing device, including a pressure testing body 10, a drain valve 20, a pressurized water inlet pipe 30, several pressure testing pipes, a movable frame 50, a safety valve 60, an air release valve 70, several conversion joints 403, a connecting pipe 101, a support frame 102, a shut-off valve 80, and conversion joints 403; Figure 1The pressure inlet pipe 30 is installed on the right end as shown; the drain valve 20 is located in the middle of the pressure inlet pipe 30 and to the left of the shut-off valve 80.

[0029] like Figure 1 As shown, safety valve 60 is connected and installed on the upper left side of the pressure tester body 10, and exhaust valve 70 is connected and installed on the upper right side of the pressure tester body 10.

[0030] like Figure 1 As shown, the movable frame 50 is fixedly installed on the lower side of the pressure tester body 10, and four rollers 501 are rotatably installed on the lower end of the movable frame 50.

[0031] At the same time, such as Figure 1 As shown, the test tubes include several flange valve pre-test tubes 401 with different diameter specifications and several threaded valve pre-test tubes 402 with different diameter specifications. The flange valve pre-test tubes 401 and valve 90 are detachably connected by bolts; the threaded valve pre-test tubes 402 and valve 90 are detachably connected.

[0032] like Figure 1 As shown, the adapter 403 can be detachably installed between the valve 90 and the flange valve reserved pressure test pipe 401. The adapter 403 can adapt to pressure changes and valves 90 with different diameter specifications. The adapter 403 can adapt to pressure changes from 2.5MPa to 1.6MPa.

[0033] like Figure 1 As shown, the rear end of the connecting pipe 101 is connected to the tester body 10, and the front end of the connecting pipe 101 is connected to the end of the valve 90 away from the tester body 10; the support frame 102 can abut against the outer wall of the front end of the valve 90.

[0034] In this embodiment, when the valve pressure testing device is in use, several valves 90 to be tested are sequentially installed on the valve pressure testing device. The ends of the threaded valves 90 are screwed onto the ends of the threaded valve reserved pressure testing tube 402; the ends of the flanged valves 90 are bolted onto the ends of the flanged valve reserved pressure testing tube 401. The threaded connection and flange connection replace welding, which can simulate the real connection structure, making the subsequent test results more reliable, and improving the stability of the connection between the valves 90 and the pressure testing tube.

[0035] During the pressure sealing performance test and strength test of valve 90, the pressurized water inlet pipe 30 is started, the shut-off valve 80 and the air vent valve 70 are opened, and water enters the tester body 10. At the same time, air is discharged from the air vent valve 70. Water enters the flange valve reserved test pipe 401 and the threaded valve reserved test pipe 402. Water enters several valves 90 to be tested simultaneously. At this time, the connecting pipe 101 can ensure that the pressure at the front and rear ends of valve 90 is consistent.

[0036] When the water pressure inside the pressure testing unit 10 reaches the required test pressure, close the pressurized water inlet pipe 30 and the drain valve 20, or simultaneously open the safety valve 60 to prevent the water pressure inside the pressure testing unit 10 and each valve 90 from being too high, maintaining it under the standard test water pressure condition and reducing safety risks; when the required standard water pressure is reached, close the safety valve 60 and conduct pressure sealing performance tests and strength tests on several valves 90; maintain static pressure on the valves 90, observing the state and condition of the valves 90 during this process, and if there is no leakage, it indicates that the pressure sealing performance and strength performance of the valves 90 are up to standard.

[0037] When it is necessary to adjust the water pressure of valve 90 during the pressure sealing performance test and strength test, the safety valve 60 can be opened, or the pressurized water inlet pipe 30 and the drain valve 20 can be opened, which can quickly and efficiently adjust the water volume and water pressure of the tester body 10, making it convenient to measure the pressure sealing performance and strength performance of valve 90 under different water pressure parameters, and improving the adjustability and versatility of the test.

[0038] After valve 90 is tested, if the drain valve 20 is far from the drainage point in the environment, the entire valve testing device can be moved. At this time, the moving frame 50 supports the main body 10 of the tester, and the rollers 501 make the entire valve testing device easy to move, allowing it to be moved to the drainage point in the test environment. Then, the drain valve 20 can be opened to allow water to drain quickly. When disassembling valve 90, the water remaining between valve 90 and the flange valve reserved test pipe 401 or the threaded valve reserved test pipe 402 can also be drained quickly and accurately, preventing water from spreading unorganized in the test environment. At the same time, when testing valve 90, the entire valve testing device can be moved quickly and conveniently, improving the adaptability and mobility of the valve testing device during use.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A valve pressure testing device, comprising a pressure testing unit body, a drain valve, a pressurized inlet pipe, and several pressure testing pipes, wherein the pressurized inlet pipe and the several pressure testing pipes are all connected to the pressure testing unit body, characterized in that, The drain valve is installed on the pressure tester body or the pressurized water inlet pipe, and also includes: A movable frame, which is fixedly installed on the lower side of the pressure tester body; Several test tubes and valves are detachably connected.

2. The valve pressure testing device as described in claim 1, characterized in that, Several of the aforementioned test tubes include: Several flange valves with different diameter specifications have reserved pressure test pipes, and the reserved pressure test pipes of the flange valves are detachably connected to the valves; Several threaded valves with different diameters have pre-installed pressure test tubes, which are detachably connected to the valves.

3. The valve pressure testing device as described in claim 1, characterized in that, It also includes a safety valve, which is connected and installed on the upper side of the pressure tester body.

4. The valve pressure testing device as described in claim 1, characterized in that, It also includes an exhaust valve, which is connected and installed on the upper side of the pressure tester body, and the exhaust valve is located on the side away from the pressurized water inlet pipe.

5. The valve pressure testing device as described in claim 2, characterized in that, It also includes several conversion joints, which can be detachably installed between the valve and the flange valve's reserved pressure test pipe.

6. The valve pressure testing device as described in claim 1, characterized in that, It also includes a connecting pipe, one end of which is connected to the main body of the pressure tester, and the other end of which is connected to the end of the valve away from the main body of the pressure tester.

7. The valve pressure testing device as described in claim 1, characterized in that, It also includes a support frame that abuts against the outer wall of the valve.

8. The valve pressure testing device as described in claim 1, characterized in that, It also includes a shut-off valve, which is installed on the pressurized water inlet pipe and located between the pressure tester body and the drain valve.

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