Valve leakage synchronous test tool

Abstract

The utility model relates to the technical field of valve body leakage detection, in particular to a valve leakage synchronous test tool which comprises a test valve block, a valve block support and an energy accumulator. One end face, in the length direction, of the testing valve block is fixedly arranged on the top of the valve block support, the energy accumulator is arranged on the other end face, away from the valve block support, of the testing valve block, and an oil way channel communicated with the energy accumulator is formed in the testing valve block. Pressure measuring joints are arranged on two opposite side surfaces of the testing valve block in pairs, mounting ports are formed in the other two side surfaces of the testing valve block, and the pressure measuring joints and the mounting ports are arranged in a one-to-one correspondence manner and are communicated with the oil path channel; a pressure relief opening, a pressure gauge, a one-way valve and a high-pressure oil injection opening are arranged at the end of the testing valve block, the pressure relief opening and the pressure gauge are located on the two side faces where the pressure testing connector is located, and the high-pressure oil injection opening is formed in the side where the installation opening is located and connected with the testing valve block through the one-way valve. And the high efficiency and accuracy of the leakage test are ensured.

Description

Technical Field

[0001] This utility model relates to the field of valve body leakage detection technology, and in particular to a valve leakage synchronous testing fixture. Background Technology

[0002] As the core control element of industrial pipeline systems, valves are widely used in petrochemical, energy and power, aerospace and other fields. Their main functions include media cutoff and conduction, flow regulation, pressure control and system safety protection. They generally include check valves, relief valves, ball valves and butterfly valves. With the development of intelligent manufacturing, the requirements for the sealing performance of valves are gradually increasing.

[0003] In related technologies, valve leakage detection devices typically involve placing the valve in water and using an air pump to inflate the valve body. The presence of air bubbles in the water is then observed to determine if a leak has occurred. This method requires manual, sequential operation, which is cumbersome and inefficient. Furthermore, when testing valves with extremely small leaks, online testing on a test bench requires a long testing time to detect even minute leaks, consuming significant time with the leak detector and resulting in low economic efficiency. Moreover, ultra-high precision leak detectors are extremely expensive, leading to high hardware costs.

[0004] The information disclosed in this background section is intended only to enhance the understanding of the overall background technology of this utility model, and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a valve leakage synchronous testing fixture to realize the synchronous detection of oil leakage in multiple valves, simplify the operation process, and ensure the efficiency and accuracy of leakage testing.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is: a valve leakage synchronous testing fixture, comprising: a test valve block, a valve block support, and an accumulator; the test valve block is configured as a tetrahedral strip, and one end face along the length direction is fixedly disposed on the top of the valve block support; the accumulator is disposed on the other end face of the test valve block opposite to the valve block support; the test valve block has an oil passage communicating with the accumulator inside;

[0007] The test valve block has pressure testing connectors arranged in pairs on both sides opposite to each other, and mounting ports arranged in pairs on the other two sides. The pressure testing connectors and the mounting ports are arranged one-to-one along the length of the test valve block and are connected to the oil passage.

[0008] The test valve block is provided with a pressure relief port, a pressure gauge, a check valve and a high-pressure oil injection port at the end facing the valve block support. The pressure relief port and the pressure gauge are located on the two sides of the pressure testing connector, and the high-pressure oil injection port is located on the side of the installation port and is connected to the test valve block through the check valve.

[0009] Furthermore, the valve block support includes a first support section, a second support section, a fixing section, and an assembly section. The first support section and the second support section are disposed on both sides of the fixing section and are located on the same plane. The test valve block is fixedly connected to the top surface of the fixing section. The assembly section is located on the side of the second support section opposite to the fixing section and is fixedly connected perpendicularly to the second support section.

[0010] Furthermore, the fixing segment is inverted U-shaped, with both sides of the fixing segment bent toward the first support segment and the second support segment, and vertically fixedly connected to the first support segment and the second support segment.

[0011] Furthermore, the length of the first support segment along the axis of the pressure testing connector is less than the length of the second support segment along the axis of the pressure testing connector.

[0012] Furthermore, the assembly section has a hollow center forming a notch, and the second support section, the assembly section, and one side of the fixing section form an assembly space. The pressure gauge is installed in the assembly space from the notch and is connected to the test valve block.

[0013] Furthermore, four eye bolts are provided on one end of the test valve block facing the accumulator, and the eye bolts are symmetrically distributed on the two opposite sides of the test valve block.

[0014] Furthermore, the mounting ports are symmetrically distributed on the two opposite sides of the test valve block, and each mounting port is located on the same height plane as the two pressure testing connectors on the two sides.

[0015] Furthermore, the mounting ports are provided in 8 pairs.

[0016] Furthermore, a pressure plate flange is fixedly installed on each of the aforementioned mounting ports, and the valve to be tested is inserted into the pressure plate flange.

[0017] Furthermore, the test valve block is arranged through both sides along the axial direction of the pressure measuring structure to form multiple waist-shaped holes, and each waist-shaped hole is connected to the corresponding mounting port.

[0018] The beneficial effects of this utility model are as follows: By arranging pressure testing connectors and installation ports sequentially on the test valve block, this utility model can simultaneously detect the oil leakage of multiple valves, significantly improving testing efficiency; oil is injected into the test valve block through the high-pressure oil injection port and reaches each valve under test through the internal oil passage; after the accumulator holds the pressure for a set time, the test results are comprehensively judged by the pressure gauge and the oil leakage at the connection seal between the valve under test and the test valve block, improving the accuracy of the test; and the overall tooling design is compact, easy to operate, and highly practical. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the valve leakage synchronous testing fixture in Embodiment 1 of this utility model;

[0021] Figure 2 This is a schematic diagram of the valve block support in Embodiment 1 of this utility model;

[0022] Figure 3 This is a schematic diagram of the test valve block in Embodiment 1 of this utility model;

[0023] Figure 4 This is a schematic diagram of the valve leakage synchronous testing fixture in Embodiment 2 of this utility model;

[0024] Figure 5 This is a schematic diagram of the test valve block in Embodiment 2 of this utility model.

[0025] Reference numerals: 01, Valve under test; 1, Test valve block; 1a, Oil passage; 1b, Mounting port; 1c, Waist-shaped hole; 2, Valve block bracket; 21, First support section; 22, Second support section; 23, Fixing section; 24, Assembly section; 24a, Notch; 24b, Assembly space; 3, Accumulator; 4, Pressure test connector; 5, Pressure relief port; 6, Pressure gauge; 7, Check valve; 8, High-pressure oil inlet; 9, Lifting eye screw; 10, Pressure plate flange. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0027] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0028] 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 invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0029] Example 1

[0030] like Figures 1 to 3 The valve leakage synchronous test fixture shown includes: a test valve block 1, a valve block support 2, and an accumulator 3; the test valve block 1 is configured as a tetrahedral strip, and one end face along the length direction is fixedly set on the top of the valve block support 2; the accumulator 3 is set on the other end face of the test valve block 1 away from the valve block support 2; the test valve block 1 has an oil passage 1a that communicates with the accumulator 3 inside.

[0031] The test valve block 1 has a pair of pressure test connectors 4 on both sides of its opposite sides, and a pair of mounting ports 1b on both sides. The pressure test connectors 4 and mounting ports 1b are arranged one-to-one along the length of the test valve block 1 and are connected to the oil passage 1a.

[0032] The end of the test valve block 1 facing the valve block bracket 2 is provided with a pressure relief port 5, a pressure gauge 6, a check valve 7 and a high-pressure oil injection port 8. The pressure relief port 5 and the pressure gauge 6 are located on the two sides of the pressure test connector 4, respectively. The high-pressure oil injection port 8 is located on the side of the installation port 1b and is connected to the test valve block 1 through the check valve 7.

[0033] This invention, by arranging pressure testing connectors 4 and mounting ports 1b sequentially on the test valve block 1, can simultaneously detect oil leakage from multiple valves, significantly improving testing efficiency. Oil is injected into the test valve block 1 through the high-pressure oil injection port 8 and reaches each tested valve 01 through the internal oil passage 1a. After the accumulator 3 holds the pressure for a set time, the test results are comprehensively judged by the pressure gauge 6 and the oil leakage at the connection seal between the tested valve 01 and the test valve block 1, improving the accuracy of the test. Furthermore, the overall tooling design is compact, easy to operate, and highly practical.

[0034] Specifically, the test valve block 1 is designed as a tetrahedral strip, capable of oil distribution and pressure transmission, and provides an installation port 1b and a pressure testing connector 4, thereby accommodating more valves 01 under test simultaneously for testing; the valve block bracket 2 provides mechanical support for fixing the test valve block, ensuring the installation accuracy and stability of the test valve block 1; the accumulator 3 can store and release pressure, ensuring stable oil pressure during the test and guaranteeing the reliability of the test results; the installation port 1b is used to assemble the valve under test 01, ensuring a sealed connection between the valve under test 01 and the oil passage 1a; the pressure relief port 5 is used to release the pressure inside the pressure testing valve block after the test is completed, facilitating the disassembly of the valve under test 01; the pressure gauge 6 displays the pressure value in the oil passage 1a in real time, facilitating pressure monitoring; the high-pressure oil injection port 8 is used to inject high-pressure oil into the oil passage 1a, and the one-way valve 7 is installed between the high-pressure oil injection port 8 and the test valve block 1 to ensure unidirectional oil flow, prevent oil backflow, and improve the stability and reliability of the test.

[0035] When using the valve leakage synchronous test fixture in this embodiment, the following steps are included: the valve under test 01 is placed on the installation port 1b, and high-pressure oil (e.g., 200 bar) is injected into the oil passage 1a inside the test valve block 1 through the high-pressure oil injection port 8 and the one-way valve 7. The external high-pressure oil is removed and pressure is maintained through the accumulator 3. The valve is left to stand for a period of time according to the leakage requirement cycle, such as 8 days. During this process, for different types of valves under test 01, it is observed whether there is oil leakage at different positions of the test valve block 1, so as to determine whether the valve under test 01 meets the leakage test requirements. After the test is completed, the external pressure relief pipeline is connected to the pressure relief port 5 to release the pressure in the oil passage 1a. The tested valve 01 is then removed, and the next set of tested valves 01 is tested.

[0036] Based on the above embodiments, the valve block bracket 2 includes a first support section 21, a second support section 22, a fixing section 23, and an assembly section 24. The first support section 21 and the second support section 22 are disposed on both sides of the fixing section 23 and are located on the same plane. The test valve block 1 is fixedly connected to the top surface of the fixing section 23. The assembly section 24 is located on the side of the second support section 22 away from the fixing section 23 and is fixedly connected to the second support section 22 perpendicularly. The first support section 21 and the second support section 22 provide stable support to ensure that the test valve block 1 remains horizontal and stable during the test and avoids instability caused by tilting. The fixing section 23 provides a fixed installation position for the test valve block 1. The assembly section 24 is located on the side where the pressure gauge 6 is located, which protects the pressure gauge 6 and prevents it from being bumped.

[0037] Based on the above embodiment, the fixed section 23 is inverted U-shaped, with both sides of the fixed section 23 bent toward the first support section 21 and the second support section 22, and vertically fixedly connected to the first support section 21 and the second support section 22; the inverted U-shaped structure provides a wider support surface, enhances the stability and support rigidity of the entire valve block bracket 2, and ensures that the test valve block 1 will not shake due to external force during the test.

[0038] Based on the above embodiments, the length of the first support section 21 along the axis of the pressure testing connector 4 is less than the length of the second support section 22 along the axis of the pressure testing connector 4; the first support section 21 and the second support section 22 together provide stable support for the test valve block 1, ensuring that it remains horizontal during the test, and the second support section 22 is set to be longer, providing reserved space for the assembly of the pressure gauge 6 and ensuring the compactness of the overall structure.

[0039] Based on the above embodiment, the assembly section 24 is hollow in the middle to form a notch 24a. The second support section 22, the assembly section 24, and one side of the fixing section 23 form an assembly space 24b. The pressure gauge 6 is set in the assembly space 24b from the notch 24a and connected to the test valve block 1. The notch 24a facilitates the connection of the pressure gauge 6 to the test valve block 1 from the outside of the assembly section 24. After assembly, the pressure gauge 6 is located in the assembly space 24b, thereby avoiding external impacts or interference to the pressure gauge 6 and ensuring the stability of the test.

[0040] Based on the above embodiment, four lifting eye screws 9 are provided on one end of the test valve block 1 facing the accumulator 3. The lifting eye screws 9 are symmetrically distributed on the two opposite sides of the test valve block 1. The design of the lifting eye screws 9 allows the test valve block 1 to be carried and transferred by hand or lifting tool. The operation is simple and convenient. The symmetrical distribution can ensure the force balance of the test valve block 1 during the transfer process and avoid unstable gripping caused by uneven force.

[0041] Based on the above embodiment, the mounting ports 1b are symmetrically distributed on the two opposite sides of the test valve block 1, and each mounting port 1b is located on the same height plane as the two corresponding pressure testing connectors 4 on both sides. The symmetrically distributed mounting ports 1b and pressure testing connectors 4 ensure the consistency of each valve and pressure testing point during the test, improve the accuracy and reliability of the test, and facilitate the processing of the internal oil passage 1a of the test valve, simplifying the operation. The mounting ports 1b and pressure testing connectors 4 are located on the same height plane, ensuring the uniformity of pressure transmission during the test, avoiding pressure deviation caused by height difference, and further improving the accuracy of the test.

[0042] Based on the above embodiment, the mounting port 1b is provided with 8 pairs, which can simultaneously test 16 valves 01 under test, greatly improving the testing efficiency.

[0043] Based on the above embodiments, a pressure plate flange is fixedly provided on each mounting port 1b, and the valve under test 01 is inserted into the pressure plate flange. The pressure plate flange is fixed to the mounting port 1b by bolts, which can ensure the sealing between the valve under test 01 and the test valve block 1, prevent leakage of the test valve block 1 itself, and facilitate the quick insertion, removal and disassembly of the valve under test 01 through the pressure plate flange, thereby improving assembly efficiency.

[0044] Specifically, when the valve under test 01 is a one-way valve, the oil enters the valve under test 01 through the oil passage 1a. The pressure gauge 6 is used to observe whether the internal pressure is stable, and whether there is oil leakage from the exposed part of the connection and seal between the valve under test 01, the pressure test connector 4, and the test valve block 1. This determines whether the valve under test 01 meets the leakage test requirements.

[0045] Example 2

[0046] As another implementation, this embodiment only improves the structure of the test valve block 1, while the rest of the structure is the same as in Embodiment 1, and will not be described in detail here.

[0047] like Figure 4 and Figure 5 As shown, the test valve block 1 is arranged through both sides along the axis of the pressure measuring structure, forming multiple oblong holes 1c. Each oblong hole 1c is connected to the corresponding mounting port 1b. The design of the oblong holes 1c allows the operator to more intuitively observe the oil penetration of the valve under test 01 when it is not obvious. Specifically, when the valve under test 01 is an overflow valve, the amount of oil penetration is too small to be directly obtained by manual observation. The oil that seeps out of the oblong holes 1c can be absorbed by the oil-absorbing material, and the weight of the seeping oil can be measured by weighing. Based on the density of the oil, the volume of the seeping oil can be obtained, and it can be used to determine whether the valve under test 01 meets the leakage test requirements.

[0048] Furthermore, it should be noted that the mounting ports 1b on both sides can be configured with different structural forms. For example, in this embodiment, the valve to be tested that is assembled on the mounting port 1b connected to the waist-shaped hole 1c is an overflow valve, and the connection form is a screw connection. The valve to be tested that is assembled on the other side is a check valve, so that different types of valve bodies can be tested.

[0049] Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A valve leak synchronization test fixture, characterized by, The utility model relates to a test valve block, valve block support and energy accumulator, the test valve block is set to tetrahedron long strip, and one end along the length direction is fixedly arranged on the top of valve block support, the energy accumulator is arranged on the other end of the test valve block away from the valve block support, and the test valve block has oil passage channel communication with the energy accumulator inside, The test valve block is provided with pressure measuring connector on the two opposite sides, and is provided with mounting port on the other two sides, the pressure measuring connector and the mounting port are arranged one by one along the length direction of the test valve block, and are communicated with the oil passage channel, The end of the test valve block towards the valve block support is provided with pressure relief port, pressure gauge, check valve and high-pressure oil injection port, the pressure relief port and the pressure gauge are located on the two sides of the pressure measuring connector respectively, and the high-pressure oil injection port is arranged on the side of the mounting port and connected with the test valve block through the check valve. The valve block support includes first support section, second support section, fixed section and assembly section, the first support section and the second support section are arranged on the two sides of the fixed section and located on the same plane, the test valve block is fixedly connected with the top surface of the fixed section, and the assembly section is located on the side of the second support section away from the fixed section and is fixedly connected with the second support section perpendicularly.

2. The valve leak synchronization test fixture of claim 1, wherein, The fixed section is inverted U-shaped, and the two sides of the fixed section are bent towards the first support section and the second support section and are fixedly connected with the first support section and the second support section perpendicularly.

3. The valve leak synchronization test fixture of claim 2, wherein, The length of the first support section along the axis direction of the pressure measuring connector is less than the length of the second support section along the axis direction of the pressure measuring connector.

4. The valve leak synchronization test fixture of claim 3, wherein, The middle part of the assembly section is hollow to form a recess, the second support section, the assembly section and one side of the fixed section form an assembly space, the pressure gauge is arranged in the assembly space from the recess and connected with the test valve block.

5. The valve leak synchronization test fixture of claim 4, wherein, One end of the test valve block towards the energy accumulator is provided with four lifting eye screws, and the lifting eye screws are symmetrically distributed on the two opposite sides of the test valve block.

6. The valve leak synchronization test fixture of claim 1, wherein, The mounting ports are symmetrically distributed on the two opposite sides of the test valve block, and each mounting port is located on the same height plane with two corresponding pressure measuring connectors on the two sides.

7. The valve leak synchronization test fixture of claim 1, wherein, Each mounting port is provided with 8 pairs of pressure plate flanges.

8. The valve leak synchronization test fixture of claim 7, wherein, Each mounting port is fixedly provided with a pressure plate flange, and the valve to be measured is inserted on the pressure plate flange.

9. The valve leak synchronization test fixture of claim 7, wherein, The test valve block is through arranged on both sides along the axis direction of the pressure measuring structure to form a plurality of waist-shaped holes, and each waist-shaped hole is communicated with the corresponding mounting port.

10. The valve leak synchronization test fixture of claim 7, wherein, ​

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