External valve test tool

Abstract

The utility model relates to the field of valve testing, in particular to an external valve testing tool, and adopts the technical scheme that the external valve testing tool comprises a testing table, a positioning piece which is arranged on the testing table and is used for positioning a valve body to be tested, and a testing piece which is arranged on the testing table, the test bench is provided with an inlet channel communicated with the cavity, an outlet of the inlet channel is located at an inlet of the valve body to be tested, the test bench is provided with an outlet channel communicated with the cavity, an inlet of the outlet channel is located at an outlet of the valve body to be tested, and a test end of the test piece is located at the inlet channel and / or the outlet channel. The method has the advantages that the valve body mounting steps are simplified, the valve body does not need to be repeatedly mounted and dismounted, and the valve body testing efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of valve testing, and in particular to an external valve testing fixture. Background Technology

[0002] The CDC (Continuous Damping Control Valve) is an external valve installed outside the shock absorber and fixed to the shock absorber housing. It controls the flow rate of the oil inside the shock absorber by adjusting the input current, thereby regulating the damping force to meet the damping requirements of the shock absorber under various operating conditions. It features continuous stepless adjustment, rapid response, and high internal oil pressure. Due to its extremely high control precision requirements, high requirements are also placed on its performance and the accuracy of performance measurements. Therefore, operators need to conduct performance tests to ensure the integrity of the CDC solenoid valve's performance.

[0003] Currently, staff perform performance tests on CDC solenoid valves, including flow resistance and temperature, placing them on different testing equipment according to varying testing requirements. However, this testing method requires mounting the solenoid valve on the test bench of the equipment, necessitating repeated installation and disassembly operations. This results in low overall testing efficiency and cumbersome operation procedures for CDC solenoid valves. Utility Model Content

[0004] To facilitate valve body testing, improve testing efficiency, and reduce repetitive operations, this application provides an external valve testing fixture.

[0005] This application provides an external valve testing fixture, which adopts the following technical solution:

[0006] An external valve testing fixture includes a test bench, a positioning element disposed on the test bench for positioning a valve body to be tested, and a test piece disposed on the test bench. The test bench has a chamber for inserting the test end of the valve body to be tested. The test bench has an inlet channel communicating with the chamber, the outlet of the inlet channel being located at the inlet of the valve body to be tested. The test bench has an outlet channel communicating with the chamber, the inlet of the outlet channel being located at the outlet of the valve body to be tested. The test end of the test piece is located in the inlet channel and / or the outlet channel.

[0007] By adopting the above technical solution, the test bench is used to install positioning components and test components. The positioning components position and fix the valve body to be tested, and the test components perform performance testing on the valve body to be tested. Fluid enters the inlet of the valve body to be tested from the inlet channel, and then flows into the outlet channel from the outlet of the valve body to be tested. The test end of the test component detects the fluid resistance, temperature, flow rate and other performance of the inlet channel and / or outlet channel. The positioning components install the valve body to be tested on the test bench, effectively reducing installation steps and improving testing efficiency.

[0008] Preferably, the positioning element includes a positioning seat disposed in the test bench and a pressing block disposed on the positioning seat. The top surface of the positioning seat has a positioning groove for the valve body to be tested to enter. The inner wall of the positioning seat has an internal thread, and the outer wall of the pressing block has an external thread adapted to the internal thread.

[0009] By adopting the above technical solution, the positioning seat positions the valve body to be tested, the pressing block improves the stability of the valve body to be tested in the positioning seat, the positioning groove is used to position the valve body to be tested, and facilitates the communication between the inlet and outlet of the valve body to be tested and the chamber. The positioning seat and the pressing block are connected by threads, which facilitates the installation or disassembly by the test personnel.

[0010] Preferably, the outer wall of the positioning seat is provided with a plurality of rotating pressure blocks, and the test platform is provided with a rotating blocking block, wherein the rotating blocking block is provided with an embedding groove adapted to the rotating pressure block.

[0011] By adopting the above technical solution, the rotating pressure block and the rotating blocking block cooperate to position the positioning seat, thereby improving the stability of the positioning seat on the test bench, simplifying the installation steps of the positioning seat, and improving the installation or disassembly efficiency of the positioning seat.

[0012] Preferably, the inner wall of the positioning seat is provided with a limiting ring around the body of the valve body to be tested, and the limiting ring is provided with a positioning ring along the circumferential direction on the side facing the valve body to be tested.

[0013] By adopting the above technical solution, the limiting ring is used to position the valve body under test and guide the valve body under test to move to the test position. The positioning ring and the limiting ring are used to position the valve body under test.

[0014] Preferably, the inner diameter of the limiting ring is larger than the maximum outer diameter of the valve body to be tested, and the inner diameter of the positioning ring is smaller than the maximum outer diameter of the valve body to be tested.

[0015] By adopting the above technical solution, the inner diameter of the limiting ring is larger than the maximum outer diameter of the valve body under test, and the inner diameter of the positioning ring is smaller than the maximum outer diameter of the valve body under test. When it is necessary to disassemble the valve body under test, the positioning seat is pulled out, and the valve body under test moves out with the positioning seat and separates from the test bench, which effectively simplifies the disassembly steps of the valve body under test.

[0016] Preferably, the pressing block has a groove on the side facing the valve body to be tested, a pad block 1 is provided in the groove, and a pad block 2 for positioning the valve body to be tested is provided below the pad block 1.

[0017] By adopting the above technical solution, the groove is used to install pad one, and pad two is used to expand the contact area between the top of the valve body to be tested and pad one, thereby improving the positioning effect of pad one on the valve body to be tested.

[0018] Preferably, the pad includes a positioning part and an abutment part disposed on the end of the positioning part facing the valve body to be tested. The pressing block is provided with a gasket on the side facing the valve body to be tested. The inner diameter of the gasket is smaller than the outer diameter of the positioning part, and the outer diameter of the abutment part is smaller than the outer diameter of the positioning part.

[0019] By adopting the above technical solution, the gasket is used to guide the contact part to contact the valve body to be tested, thereby improving the positioning effect of the contact part on the valve body to be tested. The inner diameter of the gasket is smaller than the outer diameter of the positioning part, thereby improving the stability of the gasket on the pressing block.

[0020] Preferably, a third pad is provided on the bottom surface of the chamber, the valve body to be tested is located between the third pad and the second pad, the third pad has a through hole communicating with the inlet of the valve body to be tested, and a sealing ring is provided between the third pad and the test platform.

[0021] By adopting the above technical solution, the third pad improves the sealing performance and stability between the chamber and the valve body under test, the through hole is used for fluid to enter the inlet of the valve body under test, and the sealing ring improves the sealing performance between the third pad and the test bench.

[0022] Preferably, the test bench includes a mounting plate, a test base disposed on the mounting plate, and a test valve seat disposed on the test base, wherein the positioning element is located on the test valve seat.

[0023] By adopting the above technical solution, the mounting plate is used to fix the test bench, and the test base is used to install the test valve seat. The test valve seat can be replaced according to the model of the valve body to be tested, thereby improving the adaptability of the test bench.

[0024] Preferably, the test piece includes a pressure sensor and a temperature sensor mounted on the test bench.

[0025] In summary, this application utilizes positioning components to quickly install the valve body under test onto the test bench, effectively reducing installation steps. The positioning ring facilitates the movement of the valve body under test by the positioning seat, enabling rapid disassembly of the valve body. The pad block, by screwing the threaded pressing block into place, gradually presses down to position the valve body under test, improving its stability on the test bench. The mounting plate facilitates the installation of test fixtures in different testing environments, allowing testers to adjust the position according to testing needs. The test valve seat can be replaced in real time according to the valve body specifications, reducing testing costs. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of an external valve testing fixture according to this application;

[0027] Figure 2 This is a schematic diagram of the structure of an external valve testing fixture according to this application;

[0028] Figure 3This is a cross-sectional view of an external valve testing fixture according to this application;

[0029] Figure 4 This is a schematic diagram of the structure of an external valve testing fixture according to this application.

[0030] Explanation of reference numerals in the attached drawings: 1. Test bench; 111. Mounting plate; 112. Test base; 113. Test valve seat; 2. Positioning component; 21. Positioning seat; 22. Pressing block; 3. Test component; 31. Pressure sensor; 32. Temperature sensor; 4. Chamber; 5. Inlet channel; 6. Outlet channel; 7. Positioning groove; 8. Rotating pressing block; 9. Rotating blocking block; 10. Embedded groove; 11. Limiting ring; 12. Positioning ring; 13. Groove; 14. Pad one; 141. Positioning part; 142. Abutment part; 15. Pad two; 16. Gasket ring; 17. Pad three; 171. Through hole; 18. Sealing ring; 19. Valve body to be tested. Detailed Implementation

[0031] The following is in conjunction with the appendix Figures 1-4 The present invention will be further described below. The following embodiments are only used to more clearly illustrate the technical solution of this application, and should not be used to limit the protection scope of the present invention.

[0032] In the description of this application, it should be noted that the orientations or positional relationships indicated by terms such as "center", "up", "down", "left", "right", "vertical", "horizontal", "inner", and "outer" are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0033] This application discloses an external valve testing fixture. (Refer to...) Figure 1 and Figure 2 The test system includes a test bench 1, a positioning element 2 mounted on the test bench 1, and a test piece 3 mounted on the test bench 1. The test bench 1 has a groove that fits against the outer wall of the positioning element 2. The test bench 1 also has a chamber 4 for inserting the test end of the valve body 19 to be tested. An inlet channel 5 communicating with the chamber 4 is provided on the test bench 1. The outlet of the inlet channel 5 is located at the inlet of the valve body 19 to be tested. Fluid enters through the inlet channel 5 and reaches the inlet of the valve body 19 to be tested. An outlet channel 6 communicating with the chamber 4 is provided on the test bench 1. The inlet of the outlet channel 6 is connected to the outlet of the valve body 19 to be tested. Fluid enters the outlet channel 6 from the outlet of the valve body 19 to be tested. The test piece 3 is used to detect the performance of the valve body 19 to be tested. The test end of the test piece 3 is located in the inlet channel 5 and / or the outlet channel 6.

[0034] Reference Figure 1 and Figure 2 Test component 3 includes a pressure sensor 31 and a temperature sensor 32 mounted on the test bench 1. In this embodiment, two sets of pressure sensors 31 and temperature sensors 32 are respectively provided: one set of pressure sensors 31 and temperature sensors 32 is provided in the inlet channel 5, and another set of pressure sensors 31 and temperature sensors 32 is provided in the outlet channel 6, to detect the fluid flow rate, flow resistance, and temperature at the inlet and outlet ends. In specific implementation, test components 3 can be added as needed to test performance.

[0035] Reference Figure 2 and Figure 3 The positioning component 2 positions the valve body 19 to be tested. The positioning component 2 includes a positioning seat 21 installed in the test bench 1 and a pressing block 22 installed on the positioning seat 21. The top surface of the positioning seat 21 has a positioning groove 7, which positions the valve body 19 to be tested. The bottom of the positioning groove 7 communicates with the chamber 4, allowing the end of the valve body 19 to be tested to enter the chamber 4. The inner wall of the positioning seat 21 has an internal thread, and the outer wall of the pressing block 22 has an external thread that matches the internal thread. The pressing block 22 is screwed into the positioning seat 21, and the threaded connection facilitates the installation or removal of the pressing block 22.

[0036] Reference Figure 3 and Figure 4 To further improve the pressing and positioning effect of the pressing block 22 on the valve body 19 to be tested, a groove 13 is provided on the side of the pressing block 22 facing the valve body 19 to be tested. A first pad 14 is provided in the groove 13, and a second pad 15 is provided between the first pad 14 and the valve body 19 to be tested. A gasket 16 is provided on the side of the pressing block 22 facing the valve body 19 to be tested. The first pad 14 includes a positioning part 141 located in the groove 13 and an abutting part 142 provided at the end of the positioning part 141 facing the valve body 19 to be tested. The outer diameter of the abutting part 142 is smaller than the outer diameter of the positioning part 141. The inner diameter of the gasket 16 is smaller than the positioning part 141. The outer diameter of the abutting part 142 is smaller than the positioning ring 12. The abutting part 142 passes through the gasket 16 and abuts against the second pad 15. The gasket 16 positions the positioning part 141, improves the stability of the positioning part 141 in the groove 13, and guides the abutting part 142 to abut against the second pad 15 in the center. A third gasket 17 is provided on the bottom surface of the chamber 4. The valve body 19 to be tested is located between the third gasket 17 and the second gasket 15. The third gasket 17 has a through hole 171 communicating with the inlet of the valve body 19 to facilitate fluid entry into the valve body 19. In order to improve the sealing between the third gasket 17 and the test platform 1, a sealing ring 18 is provided between the third gasket 17 and the test platform 1. The side of the third gasket 17 facing the valve body 19 to be tested is also provided with a sealing element, preferably an O-ring.

[0037] Reference Figure 2 and Figure 4After the pressing block 22 is screwed into the positioning seat 21, the first pad 14 moves down with the pressing block 22 and abuts against the second pad 15. The second pad 15 contacts and presses down on the valve body 19 to be tested, abutting against the third pad 17. This improves the stability of the valve body 19 within the positioning seat 21, enhances the stability of the valve body 19 during testing, reduces the possibility of valve body shaking during testing, and improves test accuracy. After the valve body 19 is installed, to improve the stability of the positioning seat 21 on the test bench 1, several rotating pressing blocks 8 are fixed to the outer wall of the positioning seat 21. A rotating blocking block 9 is fixedly installed on the test bench 1. The rotating blocking block 9 has an embedding groove 10 that matches the rotating pressing block 8. The positioning seat 21 rotates to embed the rotating pressing block 8 into the embedding groove 10, achieving positioning. The rotating block 9 is fixed to the test bench 1 by bolts. In this embodiment, two sets of rotating blocks 9 are symmetrically arranged with the central axis of the positioning seat 21, and the embedding grooves 10 are opened opposite each other. Two sets of rotating pressure blocks 8 are arranged so that when one set of rotating pressure blocks 8 rotates into one rotating block 9, the other set of rotating pressure blocks 8 enters into another rotating block 9.

[0038] Reference Figure 4 To facilitate the quick removal of the valve body from the test bench 1 by the positioning seat 21, a limiting ring 11 is provided on the inner wall of the positioning seat 21 around the valve body. A positioning ring 12 is provided around the side of the limiting ring 11 facing the valve body in the circumferential direction. The inner diameter of the limiting ring 11 is larger than the maximum outer diameter of the valve body 19 to facilitate the installation and positioning of the valve body. The inner diameter of the positioning ring 12 is smaller than the maximum outer diameter of the valve body 19 to facilitate the positioning ring 12 to engage with the valve body when the positioning seat 21 is pulled out, thereby moving the valve body out of the test bench 1.

[0039] Reference Figure 1 and Figure 2 The test bench 1 includes a mounting plate 111, a test base 112 mounted on the mounting plate 111, and a test valve seat 113 mounted on the test base 112. A positioning component 2 is mounted on the test valve seat 113, and a test component 3 is mounted on the test base 112. The test valve seat 113 is bolted to the test base 112, and the test base 112 is bolted to the mounting plate 111. The mounting plate 111 is bolted to the test bench surface, allowing testers to easily install the test fixture in different environments according to experimental needs. When testing valve bodies of different specifications, only the test valve seat 113 needs to be replaced accordingly, eliminating the need for complete re-customization and effectively reducing testing costs.

[0040] The implementation principle of an external valve testing fixture according to an embodiment of this application is as follows: The valve body 19 to be tested is placed inside the positioning seat 21. The limiting ring 11 guides the valve body 19 to move downwards, and the positioning ring 12 positions the valve body 19 to improve its stability within the positioning seat 21. After the valve body is positioned, the second pad 15 is placed on top of the valve body 19, and then the pressing block 22 is screwed in. When the pressing block 22 rotates downwards, it causes the first pad 14 to move downwards. The pad ring 16 guides the first pad 14 to abut against the second pad 15 in the center, ensuring the overall stability of the valve body.

[0041] After the valve body is installed, the positioning seat 21 is placed into the test valve seat 113, and the rotating pressure block 8 is rotated to embed into the rotating plug 9 to achieve positioning. Then, the fluid flows from the inlet channel 5 to the valve body inlet, and then from the valve body outlet into the outlet channel 6. The test piece 3 detects the fluid data of the inlet channel 5 and the outlet channel 6, which facilitates the experimenter to test the performance of the valve body.

[0042] After the valve body test is completed, disassembly of the valve body can begin. Simply rotate the rotating pressure block 8 out of the rotating block 9, then pull out the positioning seat 21 and unscrew the pressing block 22 to complete disassembly. The testing fixture of this application has simple installation steps, is easy to operate, and can perform a variety of tests, effectively improving the efficiency of valve body testing.

[0043] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An external valve testing fixture, characterized by: The utility model provides a valve body testing device, which comprises a testing table (1), a positioning member (2) arranged on the testing table (1) and used for positioning a valve body (19) to be tested, and a testing member (3) arranged on the testing table (1), wherein a cavity (4) for inserting a testing end of the valve body (19) to be tested is formed in the testing table (1), an access channel (5) is formed in the testing table (1) and communicates with the cavity (4), an outlet of the access channel (5) is located at an inlet of the valve body (19) to be tested, an outflow channel (6) is formed in the testing table (1) and communicates with the cavity (4), an inlet of the outflow channel (6) is located at an outlet of the valve body (19) to be tested, and a testing end of the testing member (3) is located in the access channel (5) and / or the outflow channel (6).

2. An external valve testing tool as defined in claim 1, wherein: The positioning member (2) comprises a positioning seat (21) arranged in the testing table (1) and a pressing block (22) arranged on the positioning seat (21), wherein a positioning groove (7) for the valve body (19) to be tested to enter is formed in a top surface of the positioning seat (21), an inner wall of the positioning seat (21) is provided with an internal thread, and an outer side wall of the pressing block (22) is provided with an external thread matched with the internal thread.

3. An external valve testing tool as defined in claim 2, wherein: A plurality of rotating pressing blocks (8) are arranged on an outer side wall of the positioning seat (21), and a rotating blocking block (9) is arranged on the testing table (1), wherein an embedding groove (10) matched with the rotating pressing blocks (8) is formed in the rotating blocking block (9).

4. An external valve testing tool as defined in claim 2, wherein: A limiting ring (11) is arranged on an inner wall of the positioning seat (21) along an outer periphery of the valve body (19) to be tested, and a positioning ring (12) is arranged on a side of the limiting ring (11) facing the valve body (19) to be tested in a circumferential direction.

5. An external valve testing tool as defined in claim 4, wherein: An inner diameter of the limiting ring (11) is larger than a maximum outer diameter of the valve body (19) to be tested, and an inner diameter of the positioning ring (12) is smaller than the maximum outer diameter of the valve body (19) to be tested.

6. An external valve testing tool as defined in claim 2, wherein: A recess (13) is formed in a side of the pressing block (22) facing the valve body (19) to be tested, a first pad (14) is arranged in the recess (13), and a second pad (15) for positioning the valve body (19) to be tested is arranged below the first pad (14).

7. An external valve testing tool as defined in claim 6, wherein: The first pad (14) comprises a positioning portion (141) and an abutting portion (142) arranged at one end of the positioning portion (141) facing the valve body (19) to be tested, a pad ring (16) is arranged on a side of the pressing block (22) facing the valve body (19) to be tested, an inner diameter of the pad ring (16) is smaller than an outer diameter of the positioning portion (141), and an outer diameter of the abutting portion (142) is smaller than the outer diameter of the positioning portion (141).

8. An external valve testing tool as defined in claim 6, wherein: A third pad (17) is arranged on an inner bottom surface of the cavity (4), the valve body (19) to be tested is located between the third pad (17) and the second pad (15), a through hole (171) communicating with the inlet of the valve body (19) to be tested is formed in the third pad (17), and a sealing ring (18) is arranged between the third pad (17) and the testing table (1).

9. An external valve testing tool as defined in claim 1, wherein: The test bench (1) comprises a mounting plate (111), a test base (112) arranged on the mounting plate (111), and a test valve seat (113) arranged on the test base (112), and the positioning member (2) is located on the test valve seat (113).

10. An external valve testing tool as defined in claim 1, wherein: The test member (3) comprises a pressure sensor (31) and a temperature sensor (32) arranged on the test bench (1).

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