A valve testing tool

Abstract

The utility model provides a valve test frock, and the purpose is to solve the technical problem that frock of testing valve in prior art has complex structure, poor commonality and complicated operation. The test frock includes: two end covers, respectively detachably arranged on two ports of valve, the middle part of end cover has the connecting hole, the conduit is connected to one of the end cover's connecting hole, the conduit is L-shaped, the container is filled with liquid in the inside, the pressure pipe is connected to the other end cover's connecting hole, and is used for pressurizing in the valve body, wherein, the valve is in the closed state, the conduit far from the end cover is immersed in the liquid in the container. The valve is installed on the frock through two end covers, the valve is pressurized through the pressure pipe, whether the valve is qualified can be judged through observing whether the end of the conduit immersed in the liquid bubbles. It has the advantages of simple structure, simple operation and strong commonality.

Description

Technical Field

[0001] This utility model relates to the field of valve inspection technology, and specifically to a valve testing fixture. Background Technology

[0002] Valves, as key control components in fluid transport systems, are used in almost all industrial sectors, including petrochemicals, power generation, water conservancy, municipal engineering, and pharmaceuticals. The core function of a valve is to open, close, regulate, and guide the flow of media within pipelines, and its sealing performance directly determines the safety, efficiency, and environmental impact of the entire system. Once a valve leaks, it not only wastes energy and materials but can also lead to safety accidents, environmental pollution, and even production interruptions, with potentially disastrous consequences. Therefore, ensuring that valves possess excellent and reliable sealing performance is the primary goal in valve design, manufacturing, and inspection.

[0003] Currently, the industry primarily relies on traditional testing fixtures for the sealing performance testing of finished valves or valves after repair. However, these traditional fixtures generally suffer from problems such as complex structure, poor versatility, and cumbersome operation. They typically require the design of specialized clamps and sealing components for valves of different diameters and pressure ratings, and the installation process often involves tightening and aligning multiple sets of bolts, which is time-consuming and labor-intensive. Furthermore, there is a lack of convenient and efficient methods for controlling the clamping force of the seals and for injecting and discharging the test medium during the testing process, resulting in low efficiency, high labor intensity, and the accuracy and repeatability of test results easily affected by human factors. Utility Model Content

[0004] To address the technical problems of complex structure, poor versatility, and cumbersome operation in existing valve testing fixtures, this invention provides a valve testing fixture. The valve to be tested is mounted on this fixture using two end caps. Pressure is applied to the valve through a pressure pipe, and the valve's quality is determined by observing whether bubbles emerge from the end of the pipe submerged in liquid. This fixture offers advantages such as simple structure, easy operation, and high versatility.

[0005] The technical solution of this utility model is:

[0006] A valve testing fixture, comprising:

[0007] Two end caps are detachably mounted on the two ports of the valve, and each end cap has a connecting hole in the middle.

[0008] A conduit, one end of which is connected to a connection hole in one of the end caps, is L-shaped;

[0009] A container with an open slot, filled with liquid;

[0010] A pressure tube, one end of which is connected to the connection hole of the other end cap, is used to pressurize the valve body;

[0011] The valve is in the closed state, and the end of the conduit away from the end cap is submerged in the liquid inside the container.

[0012] Optionally, it also includes:

[0013] A measuring cup, also containing liquid, is placed inside the container, with the measuring cup inverted inside the container;

[0014] The end of the catheter away from the end cap is submerged in the liquid inside the measuring cup.

[0015] Optionally, the measuring cup is completely submerged in the liquid inside the container.

[0016] Optionally, the bottom of the container is provided with an installation hole for the conduit to pass through, and the outer wall of the conduit is sealed to the container.

[0017] Optionally, the conduit has a side hole on the side away from the end cap.

[0018] Optionally, it also includes:

[0019] A cup lid is detachably provided at the mouth of the measuring cup. The cup lid has a through hole in the middle for the conduit to pass through, and the cup lid is also provided with a vent hole.

[0020] The through hole on the cup lid and the conduit are fitted with a clearance.

[0021] Optionally, the cup lid is located inside the container, and the end of the conduit away from the end cap extends vertically upward and is placed inside the measuring cup.

[0022] Optionally, it also includes:

[0023] A cup lid is detachably provided at the mouth of the container, the cup lid has a through hole in the middle for the conduit to pass through, and the cup lid is also provided with an exhaust hole;

[0024] The cup lid is welded to the conduit.

[0025] Optionally, the end of the conduit away from the end cap extends vertically downward and is placed inside the container.

[0026] Optionally, the end of the conduit is provided with a connector, which is detachably disposed in the connection hole, and the connector is provided with a sealing gasket.

[0027] Compared with the prior art, the beneficial effects of this utility model are:

[0028] The test valve is mounted on the fixture using two end caps. Pressure is applied to the valve through a pressure pipe, and the valve's quality is determined by observing whether bubbles emerge from the end of the pipe submerged in liquid. This method offers advantages such as simple structure, easy operation, and high versatility. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the structure of Embodiment 1;

[0031] Figure 2 This is a schematic diagram of the structure of Example 2. Detailed Implementation

[0032] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the drawings and description are considered exemplary in nature and not restrictive.

[0033] The following disclosure provides many different embodiments or examples for implementing various structures of this invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0034] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0035] Example 1:

[0036] See Figure 1 This embodiment discloses a valve testing fixture, including an end cap 10, a conduit 20, a container 30, and a pressure pipe (not shown in the figure). Both end caps 10 are flange structures and can be installed on the two ports of the valve 40 to be tested by bolts or other connecting parts. Furthermore, the end caps 10 and the head of the end cap 10 have a connection hole.

[0037] The conduit 20 has an L-shaped structure. One end of the conduit 20 is detachably mounted on the connection hole of one of the end caps 10. The end of the conduit 20 away from the end cap 10 extends vertically downward and is placed inside the container 30. The container 30 has an opening slot and is filled with liquid, usually water, with the end of the conduit 20 submerged in the liquid.

[0038] One end of the pressure tube is connected to the connection hole on the other end cap 10, and the other end of the pressure tube is generally connected to the booster pump, so that pressure is applied to the valve 40 to be tested through the booster pump and the pressure tube.

[0039] This embodiment is applicable to detecting whether there is a leak in the ambient temperature valve 40.

[0040] Before testing, valve 40 is in the closed state. During testing, the pressure inside one end of valve 40 increases. If valve 40 has a leakage problem, the pressure inside the other end of valve 40 will also increase. At this time, the gas inside valve 40 will enter container 30 through conduit 20. Since the end of conduit 20 is submerged in liquid, air bubbles will be generated in the liquid at the end of conduit 20. By observing whether air bubbles are generated in the liquid in container 30, it can be determined whether valve 40 has a leakage problem. This technical solution has the advantages of simple structure, simple operation, and strong versatility.

[0041] In one specific embodiment:

[0042] The test fixture also includes a cup lid 50, which is detachably mounted at the opening of the container 30. Generally, the detachable connection between the cup lid 50 and the container 30 is achieved by threaded engagement. The cup lid 50 has a through hole in the middle for the conduit 20 to pass through, and the cup lid 50 is welded to the conduit 20. The cup lid 50 is also provided with an exhaust hole.

[0043] In this embodiment, by fixing the positional relationship between the cup lid 50 and the conduit 20, the position of the end of the conduit 20 in the liquid is controlled, thereby simplifying the installation process during testing.

[0044] Preferably, the end of the conduit 20 is provided with a connector, which is detachably disposed in the connection hole and is provided with a sealing gasket. This design simplifies the connection between the conduit 20 and the end cap 10.

[0045] Example 2:

[0046] See Figure 2 This embodiment discloses a valve 40 testing fixture, including an end cap 10, a conduit 20, a container 30, and a pressure pipe. Both end caps 10 are flange structures and can be installed on the two ports of the valve 40 to be tested by bolts or other connecting parts. Furthermore, the end caps 10 and the head of the end cap 10 have a connection hole.

[0047] The conduit 20 has an L-shaped structure. One end of the conduit 20 is detachably mounted on the connection hole of one of the end caps 10. The end of the conduit 20 away from the end cap 10 extends vertically downward and is placed inside the container 30. The container 30 has an opening slot and is filled with liquid, usually water, with the end of the conduit 20 submerged in the liquid.

[0048] One end of the pressure tube is connected to the connection hole on the other end cap 10, and the other end of the pressure tube is generally connected to the booster pump, so that pressure is applied to the valve 40 to be tested through the booster pump and the pressure tube.

[0049] Before testing, valve 40 is in the closed state. During testing, the pressure inside one end of valve 40 increases. If valve 40 has a leakage problem, the pressure inside the other end of valve 40 will also increase. At this time, the gas inside valve 40 will enter container 30 through conduit 20. Since the end of conduit 20 is submerged in liquid, air bubbles will be generated in the liquid at the end of conduit 20. By observing whether air bubbles are generated in the liquid in container 30, it can be determined whether valve 40 has a leakage problem. This technical solution has the advantages of simple structure, simple operation, and strong versatility.

[0050] In this embodiment, the testing fixture also includes a measuring cup 60, which is filled with liquid and placed inside the container 30. The measuring cup 60 is inverted in the container 30 and is completely submerged in the liquid inside the container 30.

[0051] The end of the catheter 20 away from the end cap 10 is submerged in the liquid inside the measuring cup 60.

[0052] This embodiment is mainly used to test whether the cryogenic valve 40 is leaking. If the valve 40 is leaking during operation, the amount of leakage of the cryogenic valve 40 can be measured by the amount of liquid discharged by the gas in the measuring cup 60.

[0053] Preferably, the bottom of the container 30 is provided with an installation hole for the conduit 20 to pass through, and the outer wall of the conduit 20 is sealed to the container 30, which is generally welded.

[0054] In addition, since the measuring cup 60 is attached to the end of the tube 20, the bottom of the measuring cup 60 is prone to clogging the end of the tube 20. Therefore, a side hole is provided on the side of the tube 20 away from the end cap 10 to avoid clogging.

[0055] In one specific embodiment:

[0056] The testing fixture also includes a cup lid 50, which is detachably mounted on the mouth of the measuring cup 60. Generally, the detachable connection between the cup lid 50 and the measuring cup 60 is achieved through a threaded fit. The cup lid 50 has a through hole in the middle for the guide tube 20 to pass through, and the through hole of the cup lid 50 and the guide tube 20 are clearance fit. The cup lid 50 is also provided with a vent hole for discharging the liquid in the measuring cup 60.

[0057] In this embodiment, since the container 30 and the conduit 20 are fixedly connected, a through hole larger than the conduit 20 is provided on the cup lid 50, which makes it easy to attach the measuring cup 60 to the end of the conduit 20, thus simplifying the installation process during testing.

[0058] Preferably, the end of the conduit 20 is provided with a connector, which is detachably disposed in the connection hole and is provided with a sealing gasket. This design simplifies the connection between the conduit 20 and the end cap 10.

[0059] The embodiments described above merely illustrate specific implementations of this utility model, and while the descriptions are detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A valve testing fixture, characterized in that, include: Two end caps are detachably mounted on the two ports of the valve, and each end cap has a connecting hole in the middle. A conduit, one end of which is connected to a connection hole in one of the end caps, is L-shaped; A container with an open slot, filled with liquid; The pressure tube is connected at one end to the connection hole of the other end cap and is used to pressurize the valve body. The valve is in the closed state, and the end of the conduit away from the end cap is submerged in the liquid inside the container.

2. The valve testing fixture according to claim 1, characterized in that, Also includes: A measuring cup, also containing liquid, is placed inside the container, and the measuring cup is inverted inside the container; The end of the catheter away from the end cap is submerged in the liquid inside the measuring cup.

3. The valve testing fixture according to claim 2, characterized in that, The measuring cup is completely submerged in the liquid inside the container.

4. The valve testing fixture according to claim 2, characterized in that, The container has an installation hole at the bottom for the conduit to pass through, and the outer wall of the conduit is sealed to the container.

5. The valve testing fixture according to claim 2, characterized in that, The conduit has a side hole on the side away from the end cap.

6. The valve testing fixture according to claim 2, characterized in that, Also includes: A cup lid is detachably provided at the mouth of the measuring cup. The cup lid has a through hole in the middle for the conduit to pass through, and the cup lid is also provided with a vent hole. The through hole on the cup lid and the conduit are fitted with a clearance.

7. The valve testing fixture according to claim 6, characterized in that, The cup lid is located inside the container, and the end of the conduit away from the end cap extends vertically upward and is placed inside the measuring cup.

8. The valve testing fixture according to claim 1, characterized in that, Also includes: A cup lid is detachably provided at the mouth of the container, the cup lid has a through hole in the middle for the conduit to pass through, and the cup lid is also provided with an exhaust hole; The cup lid is welded to the conduit.

9. The valve testing fixture according to claim 8, characterized in that, The end of the conduit away from the end cap extends vertically downward and is placed inside the container.

10. The valve testing fixture according to any one of claims 1-9, characterized in that, The end of the conduit is provided with a connector, which is detachably disposed in the connection hole and is provided with a sealing gasket.

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