Valve simulation test device and test method
By simulating harsh working conditions in the valve simulation test device and using valve simulation test methods, the problem that the existing technology cannot verify the performance of the valve under severe working conditions in advance is solved, and the accurate detection and verification of valve performance is achieved to ensure the safety and quality of the product.
Patent Information
- Application Number
- CN202411689244.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-25
- Publication Date
- 2025-03-28
AI Technical Summary
The prior art cannot verify the performance of the valve under severe working conditions in advance before leaving the factory, resulting in the possibility that the valve structure does not meet the strict working conditions after the user is installed, which will affect the use.
Provide a valve simulation test device and test method, which conducts testing and testing before leaving the factory by simulating harsh working conditions. The device includes a test rack, an inlet tee pipe, an outlet tee pipe and a recycling box. Through the pipeline pressure and medium flow, the valve opening and closing position and time are recorded, and the leakage level is detected.
It can accurately simulate and measure the performance of the valve under severe working conditions, ensure the accuracy of measurement data, avoid media contamination, verify product performance in advance, and provide users with accurate, safe and qualified products.
Smart Images
Figure CN119714732A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of valve performance detection, and in particular to a valve simulation test device and a test method. Background Art
[0002] Valves are pipeline accessories used to open and close pipelines, control flow direction, and adjust and control the parameters (temperature, pressure, and flow) of the conveying medium. Before leaving the factory, valves are usually tested as follows: when the valve is open, the valve body should withstand an internal pressure test that is twice the valve working pressure value; when the valve is closed, both sides should withstand 1.1 times the valve working pressure value, without leakage.
[0003] Existing valves used in harsh working conditions such as silicon powder, slurry, high-temperature slag, black water, and coal powder are often only subjected to the above-mentioned basic tests before leaving the factory. Since the media in harsh working conditions may affect the opening and closing of the valve, when the user installs the valve to the pipeline, the valve structure may not meet the harsh working conditions, affecting its use. Summary of the invention
[0004] In view of the problem that the performance of valves used in harsh working conditions such as silicon powder, ore slurry, high-temperature slag, black water, and coal powder cannot be verified in advance before leaving the factory, the present invention provides a valve simulation test device and test method that can simulate harsh working conditions and perform advance detection and testing before the product leaves the factory.
[0005] The present invention provides a valve simulation test device, comprising: A test stand, the test stand comprising a front flange, a rear flange and a movable stand connected to the valve to be tested; An inlet three-way pipe, the inlet three-way pipe comprising a channel A, a channel B, and a channel C, the channel A is connected to a medium discharge valve, the channel B is connected to an air intake valve, and the channel C is connected to a front end flange; An outlet three-way pipe, the outlet three-way pipe includes channel D, channel E, and channel F, the channel D is connected to the rear end flange, the channel E is connected to the first recovery box, the channel F is connected to the second recovery box, a third recovery box is arranged on the side of the second recovery box, a first through hole connected to the first recovery box and a second through hole connected to the third recovery box are arranged on the side wall of the second recovery box, a first filter is arranged at the first through hole, a second filter is arranged at the second through hole, the third recovery box is provided with a pressure gauge, and an exhaust valve is connected to the outlet of the third recovery box.
[0006] A third filter is provided between the second recovery box and the channel F, and a fourth filter is provided at the outlet of the third recovery box.
[0007] The connection between the first recovery box and the channel E is arranged at the upper end of the first recovery box, the connection between the second recovery box and the channel F is arranged at the upper end of the second recovery box, and the outlet of the third recovery box is arranged at the upper end of the third recovery box.
[0008] The height of the first through hole is lower than that of the second through hole.
[0009] The rear end flange is connected with a purge valve.
[0010] The movable tripod includes a bracket and a universal wheel. The upper end of the bracket is provided with a connecting hole connected to the flange of the valve to be tested. The universal wheel is detachably connected to the bracket. A buffer spring is provided between the bracket and the universal wheel. A plane sliding bearing is provided at the matching position of the universal wheel and the bracket.
[0011] The bracket comprises a left bracket and a right bracket, and a step surface is provided at a matching position between the left bracket and the right bracket.
[0012] The present invention provides a valve simulation test method, comprising the following steps: The first step is to fix the flange of the valve to be tested to the front flange, the rear flange and the movable footrest, and fix the valve to be tested on the test stand; The second step is to open the medium discharge valve to discharge the medium to be tested into the inlet three-way pipe and then close the medium discharge valve; The third step is to open the air inlet valve to pressurize the pipeline to the pressure to be tested, read the pressure gauge value, and determine the leakage level of the valve to be tested in the closed state according to the pressure gauge value. If the leakage level meets the requirements, proceed to the next step, otherwise the valve to be tested is judged to be unqualified; The fourth step is to open the exhaust valve and open and close the valve to allow the medium to be tested to flow through the pressure valve cavity to simulate the working conditions and record the opening and closing position and opening and closing time of the valve to be tested. If the opening and closing position and opening and closing time of the valve meet the requirements, proceed to the next step, otherwise the valve to be tested is judged to be unqualified; The fifth step is to close the air inlet valve, open the air source of the purge valve and close it after working for 5 seconds. Finally, close the valve and remove it to complete the test.
[0013] Beneficial effects of the present invention: the present invention can be used to carry out inspection and testing of valves for severe working conditions before they leave the factory. Three recovery boxes are provided. The first box recovers the particle-containing medium at the outlet, and after filtering through the precipitated particles, the gas is discharged into the second box with the help of pipeline pressure. The second box can simultaneously recover the gas in the first box and the gas at the outlet with the help of pipeline gas. The third box recovers all the gas and then filters and discharges it. The measured pipeline pressure data can eliminate the interference of the medium and ensure accuracy. The present invention can simulate the working conditions of severe media, measure accurately and avoid the medium from contaminating the gas source or atmosphere on the outlet side, verify the performance of the product under severe working conditions in advance, and bring accurate, safe and qualified products to users. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a structural schematic diagram of an embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of a movable tripod according to an embodiment of the present invention; Figure 3 The figure is a flow chart of a valve testing method according to an embodiment of the present invention.
[0015] Among them, 1-medium discharge port, 2-medium discharge valve, 3-inlet three-way pipe, 4-inlet valve, 5-valve to be tested, 6-movable tripod, 7-first recycling box, 8-first filter, 9-third filter, 10-second recycling box, 11-second filter, 12-fourth filter, 13-third recycling box, 14-exhaust valve, 21-left bracket, 22-right bracket, 23-plane sliding bearing, 24-universal wheel, 25-step surface, 26-connecting hole. DETAILED DESCRIPTION
[0016] The embodiments of the present invention will be further described below in conjunction with the accompanying drawings.
[0017] Take silicon powder medium working condition as an example. Figure 1 As shown, a valve simulation test device includes a test frame, an inlet tee pipe 3, and an outlet tee pipe 16.
[0018] The test stand includes a front flange 31, a rear flange 32, and a movable stand 6 connected to the valve 5 to be tested. The flange connection can simulate the working process of the actual pipeline to the greatest extent; The inlet three-way pipe 3 includes a channel A, a channel B, and a channel C. Channel A is connected to a medium discharge valve 2. A medium discharge port 1 is provided at the inlet end of the medium discharge valve 2. The medium discharge valve 2 is used to discharge silicon powder medium into the pipeline. Channel B is connected to an air intake valve 4. The air intake valve 4 provides pressure for the pipeline so that the medium can flow in the pipeline to simulate the actual working conditions. Channel C is connected to the front flange 31. The outlet three-way pipe 16 includes a channel D, a channel E, and a channel F. Channel D is connected to the rear end flange 32. Channel E is connected to a first recovery box 7. Channel F is connected to a second recovery box 10. A third recovery box 13 is arranged on the side of the second recovery box 10. A first through hole connected to the first recovery box 7 and a second through hole connected to the third recovery box 13 are arranged on the side wall of the second recovery box 10. A first filter screen 8 is arranged at the first through hole, and a second filter screen 12 is arranged at the second through hole. The first recovery box 7 is used to receive the silicon powder medium that follows the gas out of the pipeline. When the silicon powder falls into the first recovery box 7, the mixture of silicon powder and gas passes through the first filter screen 8 after precipitation. The second recovery box 10 is used to divert the medium at the outlet end of the valve, reduce the bearing pressure of the first recovery box 7, and filter a small amount of silicon powder filtered and precipitated by the first recovery box and the silicon powder flowing in from the channel F. The third recovery box 13 is used to receive the gas filtered by the first and second recovery boxes to ensure that there is no impurity before it is discharged from the pipeline. The third recovery box 13 is provided with a pressure gauge 15, which is used to measure the air pressure in the third recovery box 13. Since the gas in the third recovery box 13 has been recovered and filtered by the first recovery box 7 and the second recovery box 10, it is free of impurities and can effectively eliminate the interference of the medium. The measured pressure value is the same as the pipeline pressure value. The outlet of the third recovery box 13 is connected to an exhaust valve 14, which is used to cooperate with the intake valve 4 to form a simulated pipeline circulation, and is also used to exhaust the gas in the pipeline after testing, so as to facilitate the removal of the valve 5 to be tested.
[0019] In this embodiment, a third filter screen 9 is provided between the second recovery box 10 and the channel F, and a fourth filter screen 12 is provided at the outlet of the third recovery box 13. The third filter screen 9 can filter the silicon powder medium entering the second recovery box 10 from the channel F, thereby reducing the filtering pressure of the second filter screen 11. The fourth filter screen 12 ensures that the gas discharged from the third recovery box 13 is free of impurities, thereby preventing impurities from contaminating the gas source or the atmosphere at the outlet.
[0020] In this embodiment, the connection between the first recovery box 7 and the channel E is arranged at the upper end of the first recovery box 7, the connection between the second recovery box 10 and the channel F is arranged at the upper end of the second recovery box 10, and the outlet of the third recovery box 13 is arranged at the upper end of the third recovery box 13. It is arranged as a top-in and top-out structure so that the silicon powder medium can be fully precipitated for easy filtration. The height of the first through hole is lower than the height of the second through hole, so that the gas circulates from low to high, avoiding the precipitated silicon powder medium from flowing out of the recovery box following the pressure of the pipeline.
[0021] In this embodiment, a purge valve 17 is connected to the rear end flange 32. During the opening and closing process of the valve 5 to be tested, part of the medium will be adsorbed on the valve sealing surface. After the valve to be tested is tested, this part of the medium remains on the sealing surface for a long time, which may cause corrosion of the sealing surface and affect the service life of the valve. The purge valve 17 can purge the valve sealing surface to keep the sealing surface clean.
[0022] like Figure 2 As shown, the movable tripod includes a bracket and a universal wheel 24. The bracket includes a left bracket 21 and a right bracket 22. A step surface 25 is provided at the matching position of the left bracket 21 and the right bracket 22. A connecting hole 26 connected to the flange of the valve 5 to be tested is provided at the upper end of the bracket. The universal wheel 24 is detachably connected to the bracket. A buffer spring 27 is provided between the bracket and the universal wheel 24. A plane sliding bearing 23 is provided at the matching position of the universal wheel 24 and the bracket. The left bracket 21 and the right bracket 22 can be pulled apart laterally along the step surface and can be adapted to valves of different sizes. The buffer spring 27 provides a buffer for the bracket so that the bracket can be adapted to valves of larger caliber and heavier weight. The universal wheel 24 facilitates the movement of the valve body. The movable tripod is easy to install, which can effectively improve the test efficiency.
[0023] See also Figure 3 This embodiment also provides a valve simulation test method, comprising the following steps: The first step is to fix the flange of the valve to be tested to the front flange, the rear flange and the movable footrest, and fix the valve to be tested on the test stand; The second step is to open the medium discharge valve to discharge the medium to be tested into the inlet three-way pipe and then close the medium discharge valve; The third step is to open the air inlet valve to pressurize the pipeline to the pressure to be tested, read the value of the pressure gauge, and determine the leakage level of the valve under test in the closed state according to the value of the pressure gauge. If the leakage level meets the requirements, proceed to the next step, otherwise the valve under test is judged to be unqualified. The parameters tested in this step are that the valve is closed under silicon powder working conditions, and both sides are subjected to preset pressure values without leakage. The preset pressure value is generally 1.1 times the working pressure value of the valve, and can also be set according to the actual needs of the customer; The fourth step is to open the exhaust valve and open and close the valve to allow the medium to be tested to flow through the pressure valve cavity to simulate the working conditions and record the opening and closing position and opening and closing time of the valve to be tested. If the opening and closing position and opening and closing time of the valve meet the requirements, proceed to the next step, otherwise the valve to be tested is judged to be unqualified; The fifth step is to close the air inlet valve, open the air source of the purge valve and close it after working for 5 seconds, purge the sealing surface of the valve to be tested to keep the sealing surface clean, and finally close the valve and remove it to complete the test.
[0024] The embodiments should not be regarded as limiting the present invention, and any non-inventive improvements made based on the spirit of the present invention should be regarded as falling within the protection scope of the present invention.
Claims
1. A valve simulation test device, characterized in that: include: A test stand, the test stand comprising a front flange, a rear flange and a movable stand connected to the valve to be tested; An inlet three-way pipe, the inlet three-way pipe comprising a channel A, a channel B, and a channel C, the channel A is connected to a medium discharge valve, the channel B is connected to an air intake valve, and the channel C is connected to a front end flange; An outlet three-way pipe, the outlet three-way pipe includes channel D, channel E, and channel F, the channel D is connected to the rear end flange, the channel E is connected to the first recovery box, the channel F is connected to the second recovery box, a third recovery box is arranged on the side of the second recovery box, a first through hole connected to the first recovery box and a second through hole connected to the third recovery box are arranged on the side wall of the second recovery box, a first filter is arranged at the first through hole, a second filter is arranged at the second through hole, the third recovery box is provided with a pressure gauge, and an exhaust valve is connected to the outlet of the third recovery box.
2. A valve simulation test device according to claim 1, characterized in that: A third filter is provided between the second recovery box and the channel F, and a fourth filter is provided at the outlet of the third recovery box.
3. A valve simulation test device according to claim 1, characterized in that: The connection between the first recovery box and the channel E is arranged at the upper end of the first recovery box, the connection between the second recovery box and the channel F is arranged at the upper end of the second recovery box, and the outlet of the third recovery box is arranged at the upper end of the third recovery box.
4. A valve simulation test device according to claim 1, characterized in that: The height of the first through hole is lower than that of the second through hole.
5. A valve simulation test device according to claim 1, characterized in that: The rear end flange is connected with a purge valve.
6. A valve simulation test device according to claim 1, characterized in that: The movable tripod includes a bracket and a universal wheel. The upper end of the bracket is provided with a connecting hole connected to the flange of the valve to be tested. The universal wheel is detachably connected to the bracket. A buffer spring is provided between the bracket and the universal wheel. A plane sliding bearing is provided at the matching position of the universal wheel and the bracket.
7. A valve simulation test device according to claim 6, characterized in that: The bracket comprises a left bracket and a right bracket, and a step surface is provided at a matching position between the left bracket and the right bracket.
8. A test method using the valve simulation test device according to any one of claims 1 to 7, characterized in that: The following steps are involved: The first step is to fix the flange of the valve to be tested to the front flange, the rear flange and the movable footrest, and fix the valve to be tested on the test stand; The second step is to open the medium discharge valve to discharge the medium to be tested into the inlet three-way pipe and then close the medium discharge valve; The third step is to open the air inlet valve to pressurize the pipeline to the pressure to be tested, read the pressure gauge value, and determine the leakage level of the valve to be tested in the closed state according to the pressure gauge value. If the leakage level meets the requirements, proceed to the next step, otherwise the valve to be tested is judged to be unqualified; The fourth step is to open the exhaust valve and open and close the valve to allow the medium to be tested to flow through the pressure valve cavity to simulate the working conditions and record the opening and closing position and opening and closing time of the valve to be tested. If the opening and closing position and opening and closing time of the valve meet the requirements, proceed to the next step, otherwise the valve to be tested is judged to be unqualified; The fifth step is to close the air inlet valve, open the air source of the purge valve and close it after working for 5 seconds. Finally, close the valve and remove it to complete the test.