Portable valve train seal detection device

Abstract

The present disclosure belongs to the technical field of nuclear power and particularly relates to a portable valve group sealing detection device. In the portable valve group sealing detection device, the first gas valve is connected between the pressure reducing valve and the first joint, and the second gas valve is connected between the pressure reducing valve and the second joint, so that when the instrument valve group to be detected reaches the expected pressure, the first gas valve and the second gas valve are both closed, and then the instrument valve group to be detected can be accurately tested for sealing, the problem that the instrument valve group to be detected cannot be accurately tested for internal and external leakage sealing in the prior art is overcome, the valve group sealing detection function is automatically realized through a program, and manual operation of personnel is reduced.

Description

Technical Field

[0001] This invention belongs to the field of nuclear power technology, specifically relating to a portable valve group sealing test device. Background Technology

[0002] In related technologies, the valve assembly under test is typically connected to a tee fitting via a compression fitting. One end of the tee fitting is connected to a hand pump for pressurization and pressure holding, while the other end is connected to a pressure measurement module. The pressure measurement module transmits the detected pressure signal to a calibration instrument, displaying the current pressure. The pressure holding process is manually timed, and the pressure leakage value is calculated to determine if it meets requirements. However, this method of valve assembly sealing performance testing has the following technical drawbacks: all pipelines are custom-made connections, resulting in numerous joints and uncontrollable leakage rates, potentially leading to pressure holding failure; the pressure measurement and holding process relies entirely on manual operation and calculation, making the process cumbersome and inconvenient; the pressure holding time is long, and the pressure value is greatly affected by ambient temperature, leading to distorted measurement results; pressure changes during the pressure holding process are not easily recorded continuously, hindering process analysis. Therefore, further efforts are needed to address these issues and improve the efficiency and accuracy of valve assembly sealing performance testing. Summary of the Invention

[0003] To overcome the problems existing in related technologies, a portable valve assembly sealing performance testing device is provided.

[0004] According to one aspect of the present disclosure, a portable valve assembly sealing performance testing device is provided, the device comprising: a water tank, a drive pump, a pressure reducing valve, a first air valve, a second air valve, a first connector, and a second connector;

[0005] The water tank is used to supply liquid to the drive pump. The drive pump is connected to an air source port. The drive pump delivers high-pressure water and high-pressure air to the pressure reducing valve. The pressure reducing valve is connected to the first connector. The first connector is connected to one interface of the valve group of the instrument under test for liquid input. The second connector is connected to the other interface of the valve group of the instrument under test for liquid output. The pressure reducing valve is connected to the first air valve and the second air valve and delivers gas to the first air valve and the second air valve to control the closing of the second air valve and / or the first air valve. The first air valve is connected between the pressure reducing valve and the first connector. The second air valve is connected between the pressure reducing valve and the second connector.

[0006] In one possible implementation, the instrument valve group testing device further includes a third air valve, the interface of which is connected between the first connector and the first air valve, and the pressure reducing valve is connected to the third air valve to open the third air valve.

[0007] In one possible implementation, the instrument valve group testing device further includes a manual valve, which is connected in parallel with the third air valve.

[0008] In one possible implementation, the instrument valve assembly testing device further includes a first pressure sensor, which is located between the first air valve and the first connector.

[0009] In one possible implementation, the instrument valve assembly testing device further includes a second pressure sensor located between the pressure reducing valve and the first air valve.

[0010] In one possible implementation, the instrument valve assembly testing device further includes a third pressure sensor located between the drive pump and the pressure reducing valve.

[0011] In one possible implementation, the instrument valve assembly testing device further includes a fourth pressure sensor located between the second air valve and the second connector.

[0012] In one possible implementation, the instrument valve assembly testing device further includes a pressure gauge located between the third air valve and the first connector.

[0013] In one possible implementation, the instrument valve assembly test device further includes a filter connected between the water tank and the drive pump.

[0014] In one possible implementation, the instrument valve group testing device further includes a throttle valve located between the drive pump and the air source port.

[0015] The beneficial effects of this disclosure are as follows: In the portable valve group sealing test device of this disclosure, since the first air valve is connected between the pressure reducing valve and the first connector, and the second air valve is connected between the pressure reducing valve and the second connector, when the valve group under test reaches the expected pressure, both the first and second air valves close, thereby enabling accurate sealing tests on the valve group under test. This overcomes the limitations of existing technologies where the valve group under test cannot accurately test internal and external leakage sealing. The valve group sealing test function is automated through programming, reducing tedious manual operation. The test device is designed to be portable, facilitating testing anytime and anywhere when equipment malfunctions. The integration of various test components and pipelines reduces the probability of pressure leakage and test failure that may occur with each connection. Through the controller, the test process is monitored, trend graphs are generated, data is analyzed, reports are printed, and temperature compensation is achieved, making the entire test process more intelligent. Attached Figure Description

[0016] Fig. 1 This is a schematic diagram of the instrument valve group testing device according to an embodiment of this disclosure;

[0017] Fig. 2 This is a schematic diagram of the instrument valve group testing device according to an embodiment of the present disclosure;

[0018] Fig. 3 This is a schematic diagram of the instrument valve group testing device without its outer casing, as described in an embodiment of this disclosure.

[0019] In the picture:

[0020] 100. Instrument valve assembly testing device; 110. Water tank; 120. Drive pump; 130. Pressure reducing valve;

[0021] 140. First air valve; 150. Second air valve; 160. First connector; 170. Second connector;

[0022] 180. Third air valve; 190. Manual valve; 200. First pressure sensor;

[0023] 210. Second pressure sensor; 220. Third pressure sensor; 230. Fourth pressure sensor;

[0024] 240. Pressure gauge; 250. Filter; 260. Throttling valve. Detailed Implementation

[0025] To facilitate understanding of this disclosure, a more complete description will now be given with reference to the accompanying drawings, in which preferred embodiments of the present disclosure are shown. However, this disclosure can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure.

[0026] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this disclosure. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0028] See Figs. 1 to 3The portable valve assembly sealing test device disclosed herein includes: a water tank 110, a drive pump 120, a pressure reducing valve 130, a first air valve 140, a second air valve 150, a first connector 160, and a second connector 170.

[0029] Water tank 110 is used to supply liquid to drive pump 120. Drive pump 120 is connected to an air source port. Drive pump 120 delivers high-pressure water to pressure reducing valve 130. Pressure reducing valve 130 is connected to first connector 160. First connector 160 is connected to one interface of the valve group of the instrument under test to input liquid. Second connector 170 is connected to the other interface of the valve group of the instrument under test to output liquid. Pressure reducing valve 130 is connected to first air valve 140 and second air valve 150 respectively, and delivers gas to first air valve 140 and second air valve 150 to control the closing of second air valve 150 and / or first air valve 140. First air valve 140 is connected between pressure reducing valve 130 and first connector 160. Second air valve 150 is connected between pressure reducing valve 130 and second connector 170. In specific applications, a level detector is installed inside the water tank 110 to detect the liquid level height inside the water tank 110, ensuring a constant water volume. The drive pump 120 is a high-pressure pump, used to drive liquid and gas to the pressure reducing valve 130. One end of the pressure reducing valve 130 is connected to the first connector 160. After being adjusted to a specific pressure by the pressure reducing valve 130, the first connector 160 is connected to one interface of the valve group under test for liquid input, and the second connector 170 is connected to the other interface of the valve group under test for liquid output. The pressure reducing valve 130 is connected to the first gas valve 140 and the second gas valve 150, and supplies gas to both valves. When the second gas valve 150 and... When both first air valves 140 are closed, since the first air valve 140 is connected between the pressure reducing valve 130 and the first connector 160, and the second air valve 150 is connected between the pressure reducing valve 130 and the second connector 170, the first connector 160 is blocked from supplying liquid to the valve group under test, and the liquid from the valve group under test is blocked from flowing out of the second connector 170. This allows for a closed-loop tightness test of the valve group under test, enabling more precise detection of the internal and external tightness of the valve group. In addition, when the second air valve 150 is closed and the first air valve 140 is open, an open-close tightness test can be performed on the valve group under test, which can be used as a routine tightness test, thus increasing the versatility of the instrument valve group testing.

[0030] In one possible implementation, the instrument valve group testing device 100 further includes a third air valve 180. The interface of the third air valve 180 is connected between the first connector 160 and the first air valve 140. A pressure reducing valve 130 is connected to the third air valve 180 to open the third air valve 180. In specific applications, the third air valve 180 is a pressure relief valve. The pressure reducing valve 130 controls the opening of the third air valve 180 so that the liquid in the pressure reducing valve 130 is discharged from the third air valve 180, thereby achieving the purpose of pressure relief.

[0031] In one possible implementation, the instrument valve group testing device 100 further includes a manual valve 190, which is connected in parallel with the third air valve 180. In specific applications, in order to manually adjust the pressure of the instrument valve group under test, the manual valve 190 and the third air valve 180 are connected in parallel, thereby allowing manual adjustment of the pressure of the pressure reducing valve 130.

[0032] In one possible implementation, the instrument valve assembly testing device 100 further includes a first pressure sensor 200, which is disposed between the first air valve 140 and the first connector 160. In a specific application, the first pressure sensor 200 is disposed between the first air valve 140 and the first connector 160. The first pressure sensor 200 is used to sense the pressure in the instrument valve assembly under test, so as to perform a water pressure test between the first air valve 140 and the first connector 160, thereby predicting the pressure between the first connector 160 and the instrument valve assembly under test.

[0033] In one possible implementation, the instrument valve group testing device 100 further includes a second pressure sensor 210, which is located between the pressure reducing valve 130 and the first air valve 140. In specific applications, the second pressure sensor 210, located between the pressure reducing valve 130 and the first air valve 140, is used to sense the pressure of the water exiting the pressure reducing valve 130. The pressure difference between the second pressure sensor 210 and the first pressure sensor 200 mainly originates from the opening degree of the first air valve 140. When the opening degree of the first air valve 140 is larger, the pressure difference between the second pressure sensor 210 and the first pressure sensor 200 is smaller; when the opening degree of the second air valve 140 is smaller, the pressure difference between the second pressure sensor 210 and the first pressure sensor 200 is larger, thereby indirectly achieving pressure adjustment of the instrument valve group under test.

[0034] In one possible implementation, the instrument valve group testing device 100 further includes a third pressure sensor 220, which is located between the drive pump 120 and the pressure reducing valve 130. In specific applications, the third pressure sensor 220 is located between the drive pump 120 and the pressure reducing valve 130, and is used to detect whether the water pressure output by the drive pump 120 is normal, preventing the drive pump 120 from operating abnormally.

[0035] In one possible implementation, the instrument valve group testing device 100 further includes a fourth pressure sensor 230, which is located between the second air valve 150 and the second connector 170. In specific applications, the fourth pressure sensor 230, located between the second air valve 150 and the second connector 170, is mainly used to detect the outlet water pressure of the instrument valve group under test. Specifically, when the first air valve 140, the second air valve 150, and the third air valve 180 are closed, if the first pressure sensor detects an increasing pressure drop at the first connector 160 while the fourth sensor detects no change in the pressure drop at the second connector 170, it can be determined that the instrument valve group under test has an external leak. Conversely, when the first air valve 140, the second air valve 150, and the third air valve 180 are closed, if the first pressure sensor 200 detects an increasing pressure drop at the first connector 160 while the fourth sensor detects an increasing pressure drop at the second connector 170, it can be determined that the instrument valve group under test has an internal leak.

[0036] In one possible implementation, the instrument valve group testing device 100 further includes a pressure gauge 240, which is located between the third air valve 180 and the first connector 160. In specific applications, to facilitate user monitoring of the water pressure on the instrument valve group under test, the pressure gauge 240 is located between the third air valve 180 and the first connector 160, and the dial of the pressure gauge 240 is located on the surface of the instrument valve group testing device 100, making it convenient for the user to monitor the pressure value of the instrument valve group under test.

[0037] In one possible implementation, the instrument valve assembly test device 100 further includes a filter 250 connected between the water tank 110 and the drive pump 120. In specific applications, to improve the service life of the drive pump 120, a filter 250 is also provided between the water tank 110 and the drive pump 120. This filter 250 is used to filter the water quality in the water tank 110, thereby improving the service life of the drive pump 120.

[0038] In one possible implementation, the instrument valve group test device 100 further includes a throttle valve 260, which is located between the drive pump 120 and the gas source port. In specific applications, in order to limit the pressure of gas entering the drive pump 120 from the gas source port, a throttle valve 260 can be provided between the drive pump 120 and the gas source port.

[0039] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the scope of protection of the present invention. Therefore, the scope of protection of this patent should be determined by the appended claims.

[0040] The various embodiments of this disclosure have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A portable valve assembly sealing performance testing device, characterized in that, The device includes: a water tank, a drive pump, a pressure reducing valve, a first air valve, a second air valve, a first connector, and a second connector; The water tank is used to supply liquid to the drive pump. The drive pump is connected to an air source port. The drive pump delivers high-pressure water and high-pressure air to the pressure reducing valve. The pressure reducing valve is connected to the first connector. The first connector is connected to one interface of the valve group of the instrument under test for liquid input. The second connector is connected to the other interface of the valve group of the instrument under test for liquid output. The pressure reducing valve is connected to the first air valve and the second air valve and delivers gas to the first air valve and the second air valve to control the closing of the second air valve and / or the first air valve. The first air valve is connected between the pressure reducing valve and the first connector. The second air valve is connected between the pressure reducing valve and the second connector.

2. The apparatus according to claim 1, characterized in that, The instrument valve group testing device also includes a third air valve, the interface of which is connected between the first connector and the first air valve, and the pressure reducing valve is connected to the third air valve to open the third air valve.

3. The apparatus according to claim 2, characterized in that, The instrument valve group testing device also includes a manual valve, which is connected in parallel with the third air valve.

4. The apparatus according to claim 1, characterized in that, The instrument valve group testing device also includes a first pressure sensor, which is located between the first air valve and the first connector.

5. The apparatus according to claim 1, characterized in that, The instrument valve group testing device also includes a second pressure sensor, which is located between the pressure reducing valve and the first air valve.

6. The apparatus according to claim 1, characterized in that, The instrument valve group testing device also includes a third pressure sensor, which is located between the drive pump and the pressure reducing valve.

7. The apparatus according to claim 1, characterized in that, The instrument valve group testing device also includes a fourth pressure sensor, which is located between the second air valve and the second connector.

8. The apparatus according to claim 2, characterized in that, The instrument valve group testing device also includes a pressure gauge, which is located between the third air valve and the first connector.

9. The apparatus according to claim 1, characterized in that, The instrument valve group testing device also includes a filter, which is connected between the water tank and the drive pump.

10. The apparatus according to claim 1, characterized in that, The instrument valve group testing device also includes a throttle valve, which is located between the drive pump and the air source port.

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