Replacing and washing valve testing device

Abstract

The invention relates to the technical field of valve testing, and discloses a changing and washing valve testing device which comprises a testing table, a partition plate is fixedly connected to the bottom of the testing table, a conveying pump is fixedly connected to the right side of the partition plate, a sliding rail is fixedly connected to the top of the testing table, and two fixing clamps are slidably connected to the surface of the sliding rail. The two fixing clamps are both used for fixing a replacement and washing valve, sliding blocks are arranged on the opposite sides of the two fixing clamps, a conveying pipe is fixedly arranged at the output end of the conveying pump, a liquid storage tank is fixedly connected to the left side of the partition plate, and a backflow pipe is fixedly connected to the left side of the liquid storage tank. The two pressure regulating valves can be independently regulated, various actual working conditions and generated different pressure conditions can be simulated, the test requirements of various types of changing and washing valves can be met, the performance of the changing and washing valves under different conditions can be accurately evaluated, and the test environment is closer to the actual working scene, so that potential problems and defects can be found in time, the system fault risk is reduced, and the test efficiency is improved. And the product quality and reliability are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of valve testing, and particularly to a testing device for a replacement valve. Background Art

[0002] In a hydraulic closed system, the closed circulation of hydraulic oil is crucial for maintaining the normal operation of the system. Due to factors such as friction and energy conversion during system operation, heat will inevitably be generated. If the oil temperature is too high and not effectively controlled in a timely manner, it will seriously affect the performance and lifespan of the system. To prevent this situation, some hot hydraulic oil needs to be discharged through a replacement valve for cooling and filtration. During this process, the normal operation of the replacement valve is crucial. If the replacement valve becomes blocked, it will not only affect the oil temperature control effect but may also lead to abnormal system pressure, unstable operation, and even equipment damage. Therefore, a testing device is needed to test the replacement valve.

[0003] Currently, existing testing devices for replacement valves can only measure the performance under specific pressure values, temperature values, or flow rate values during testing, and cannot comprehensively evaluate the comprehensive performance of the replacement valve under complex pressure changes, resulting in the inability to discover potential problems and defects, and the quality of the product cannot be guaranteed. Summary of the Invention

[0004] Aiming at the deficiencies of the prior art, the present invention provides a testing device for a replacement valve, which solves the problem that only the performance under specific pressure values, temperature values, or flow rate values can be measured, resulting in the inability to discover potential quality problems and defects.

[0005] To achieve the above objectives, the present invention is realized through the following technical solutions: A testing device for a replacement valve includes a test bench. A partition is fixedly connected to the bottom of the test bench. A delivery pump is fixedly connected to the right side of the partition. A slide rail is fixedly connected to the top of the test bench. Two fixing clips are slidably connected to the surface of the slide rail. Both of the two fixing clips are used to fix the replacement valve. Slide blocks are arranged on the opposite sides of the two fixing clips. A delivery pipe is fixedly arranged at the output end of the delivery pump. A liquid storage tank is fixedly connected to the left side of the partition. A return pipe is fixedly connected to the left side of the liquid storage tank. Connecting pieces are fixedly connected to the tops of the delivery pipe and the return pipe. A simulation structure is arranged at the bottom left of the partition. The simulation structure is used to simulate the changes in hydraulic oil during use. A connecting pipe is fixedly arranged at the input end of the delivery pump. The left end of the connecting pipe is fixedly connected to the liquid storage tank. Pressure regulating valves are fixedly connected to the adjacent sides of the two connecting pieces. Pressure sensors are installed on the surfaces of both of the two pressure regulating valves.

[0006] Preferably, the simulation structure includes two hydraulic cylinders, both of the two hydraulic cylinders are fixedly connected to the partition board, sliding sleeves are arranged on the surfaces of the output ends of the two hydraulic cylinders, a processing barrel is fixedly connected between the two sliding sleeves, and an infusion pipe is installed on the surface of the processing barrel.

[0007] Preferably, the slide rail sequentially penetrates through the two sliding blocks, and both of the two sliding blocks are slidably connected to the slide rail.

[0008] Preferably, both of the two connecting pieces are fixed to the pressure regulating valve by bolts, and the bottom sides of the surfaces of the two pressure regulating valves are fixedly connected to the sliding blocks.

[0009] Preferably, a controller is fixedly connected to the front side of the test bench. The controller is used to control the entire test device and also used to display test data.

[0010] Preferably, the processing barrel communicates with the two sliding sleeves, and the inner diameters of the two sliding sleeves are slidably connected to the surfaces of the output ends of the two hydraulic cylinders.

[0011] Preferably, support legs are fixedly connected to the four corner positions at the bottom of the test bench.

[0012] Preferably, the infusion pipe is fixedly connected to the processing barrel, the top end of the infusion pipe is fixedly connected to the liquid storage tank, and the liquid storage tank, the processing barrel and the infusion pipe communicate with each other.

[0013] Preferably, flow sensors are installed on the surfaces of the delivery pipe and the return pipe. The flow sensors are used to measure the liquid flow rate passing through the replacement valve.

[0014] Preferably, the pressure sensor is used to detect the pressure change at the inlet and outlet of the replacement valve, and temperature sensors are installed on the opposite sides of the two connecting pieces. The temperature sensors are used to monitor the temperature of the liquid.

[0015] Working principle: First, fix the replacement valve to be tested between the two fixed clamps on the slide rail at the top of the test bench, and then start the delivery pump to extract liquid from the liquid storage tank. The liquid passes through the connecting pipe and the delivery pump and enters the delivery pipe. The liquid in the delivery pipe flows to the replacement valve at the connecting piece. During the process of the liquid flowing through the replacement valve, the pressure regulating valve adjusts the pressure of the liquid according to the test requirements. The pressure sensor detects the pressure change at the inlet and outlet of the replacement valve in real time. The flow sensor measures the liquid flow rate passing through the replacement valve. The temperature sensor monitors the temperature of the liquid. Meanwhile, the simulation structure at the bottom left of the partition works. The output ends of two hydraulic cylinders perform piston movements within the sliding sleeves, causing the hydraulic oil to be pushed and rubbed back and forth within the treatment barrel, simulating the actual situation of the hydraulic oil during use. Subsequently, the liquid is reinjected into the liquid storage tank through the infusion pipe and pumped by the transfer pump. The liquid that has passed the test of the replacement valve returns to the liquid storage tank through the return pipe, realizing the recycling of the liquid. During the entire test process, the controller serves as the control core, achieving the start, stop, and parameter setting of components such as the transfer pump, pressure regulating valve, and hydraulic cylinder. The data generated by the detection components of the pressure sensor, flow sensor, and temperature sensor are displayed in real time on the controller, and the change curves and values of the pressure, flow, and temperature parameters during the test process are intuitively presented through the liquid crystal display screen or touch screen. Moreover, the sliding block can slide flexibly along the slide rail to adjust the position of the fixed clamp to adapt to replacement valves of different specifications. The graphite powder between the sliding block and the slide rail reduces the friction coefficient and extends the service life.

[0016] The present invention provides a replacement valve testing device, which has the following beneficial effects: 1. In the present invention, two pressure regulating valves can be independently adjusted, capable of simulating various actual working conditions and generating different pressure conditions, meeting the testing requirements of various types of replacement valves, accurately evaluating their performance under different conditions, making the test environment closer to the actual working scenario, thereby promptly discovering potential problems and defects, reducing the risk of system failures, and improving the product quality and reliability.

[0017] 2. By adopting the simulation structure, the present invention can simulate the state change of the hydraulic oil during use, more realistically restore the working conditions of the replacement valve in actual operation, make the hydraulic oil environment during the test closer to the actual use scenario, improve the reliability and practicality of the test results of the replacement valve, and enhance the comprehensiveness and reliability of the test.

[0018] 3. The pressure sensor, flow sensor, and temperature sensor provided in the present invention can detect the pressure, flow, and temperature parameters of the replacement valve under different working conditions, providing accurate and multi-dimensional data for evaluating the performance of the replacement valve, thereby more accurately judging its quality and reliability. The settings of the slide rail and the fixed clamp ensure the stable installation of the replacement valve during the test process, reducing the test errors caused by unstable installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a perspective view of a replacement valve testing device of the present invention; Figure 2 is a front view schematic diagram of a replacement valve testing device of the present invention; Figure 3 is a right view schematic diagram of a replacement valve testing device of the present invention; Figure 4 The bottom view schematic diagram of a test device for a replacement valve of the present invention; Figure 5 The simulated structural schematic diagram of a test device for a replacement valve of the present invention; Figure 6 The top view schematic diagram of a test device for a replacement valve of the present invention.

[0020] Wherein, 1. Test bench; 2. Delivery pipe; 3. Pressure regulating valve; 4. Return pipe; 5. Controller; 6. Liquid storage tank; 7. Partition board; 8. Support leg; 9. Connecting pipe; 10. Processing barrel; 11. Sliding sleeve; 12. Infusion pipe; 13. Hydraulic cylinder; 14. Delivery pump; 15. Flow sensor; 16. Temperature sensor; 17. Sliding block; 18. Pressure sensor; 19. Connecting piece; 20. Slide rail; 21. Fixed clamp. Specific embodiments

[0021] Next, the technical solutions of the present invention will be clearly and completely described in conjunction with the drawings of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0022] Please refer to the attached Figure 1 - attached Figure 3 and attached Figure 6 , the embodiment of the present invention provides a test device for a replacement valve, including a test bench 1. A partition board 7 is fixedly connected to the bottom of the test bench 1. A delivery pump 14 is fixedly connected to the right side of the partition board 7. A slide rail 20 is fixedly connected to the top of the test bench 1. Two fixed clamps 21 are slidably connected to the surface of the slide rail 20. Both of the two fixed clamps 21 are used for fixing the replacement valve. Sliding blocks 17 are arranged on the opposite sides of the two fixed clamps 21. A delivery pipe 2 is fixedly arranged at the output end of the delivery pump 14. A liquid storage tank 6 is fixedly connected to the left side of the partition board 7. A return pipe 4 is fixedly connected to the left side of the liquid storage tank 6. Connecting pieces 19 are fixedly connected to the tops of both the delivery pipe 2 and the return pipe 4. A simulated structure is arranged at the bottom left of the partition board 7. The simulated structure is used to simulate the change of hydraulic oil during use. A connecting pipe 9 is fixedly arranged at the input end of the delivery pump 14. The left end of the connecting pipe 9 is fixedly connected to the liquid storage tank 6. Pressure regulating valves 3 are fixedly connected to the adjacent sides of the two connecting pieces 19. Pressure sensors 18 are installed on the surfaces of both of the two pressure regulating valves 3.

[0023] The test bench 1 serves as the basic support structure of the entire device. The partition plate 7 plays a role in separating and supporting, reasonably dividing the space below the test bench 1, which facilitates the installation of different components. The transfer pump 14 serves as the power source for liquid transfer, capable of providing stable and controllable liquid pressure and flow rate. The slide rail 20 is a linear guide rail that can ensure smooth movement of the components slidingly connected thereto. The slider 17 fits tightly with the slide rail 20 and can slide flexibly on the slide rail 20, thereby realizing the position adjustment of the fixed clamp 21 to adapt to different specifications of the replacement valve. The transfer pipe 2 is a flexible composite high-pressure transfer pipe, which can ensure that the liquid will not leak or be damaged during the transfer process; The liquid storage tank 6 has a relatively large volume and can store a sufficient amount of test liquid. A liquid level sensor is provided inside it to monitor the liquid level and replenish the liquid in a timely manner. The function of the return pipe 4 is to return the liquid after being tested by the replacement valve to the liquid storage tank 6, realizing the recycling of the liquid and reducing the test cost. The simulation structure is used to simulate the changes of hydraulic oil during use, and can more realistically reflect the working conditions of the replacement valve in actual operation.

[0024] Please refer to the attached Figure 2 and attached Figure 5 . The simulation structure includes two hydraulic cylinders 13. Both of the two hydraulic cylinders 13 are fixedly connected to the partition plate 7. Sliding sleeves 11 are arranged on the surfaces of the output ends of the two hydraulic cylinders 13. A processing barrel 10 is fixedly connected between the two sliding sleeves 11. An infusion pipe 12 is installed on the surface of the processing barrel 10.

[0025] The hydraulic cylinder 13 is a prior art and is an actuator that can convert hydraulic energy into mechanical energy, generating a linear thrust or pull through the movement of the internal piston. Through the friction between the sliding sleeve 11 and the output end of the hydraulic cylinder 13, the hydraulic oil is pushed and rubbed back and forth in the processing barrel 10 to simulate the real situation of the hydraulic oil during use. Then, liquid is injected into the processing barrel 10 through the infusion pipe 12.

[0026] Please refer to the attached Figure 2 and attached Figure 6 . The slide rail 20 sequentially penetrates through the two sliders 17, and both of the two sliders 17 are slidably connected to the slide rail 20.

[0027] The slider 17 can perform precise linear motion along the direction of the slide rail 20. The sliding connection method reduces the movement resistance, improves the flexibility and convenience of operation. Graphite powder is also provided between the slider 17 and the slide rail 20, further reducing the friction coefficient and extending the service life.

[0028] Please refer to the attached Figure 6 . Both of the two connectors 19 are fixed to the pressure regulating valve 3 by bolts, and the bottom sides of the surfaces of both of the two pressure regulating valves 3 are fixedly connected to the slider 17.

[0029] The bolt connection has the advantages of firm connection, detachable, convenient for maintenance and replacement. The pressure regulating valve 3 is a prior art, which can adjust the pressure of the liquid according to the test requirements. By changing the position of the valve core, the size of the throttle orifice is adjusted, thereby changing the flow resistance of the liquid and realizing the adjustment of the pressure. The sliding block 17 on the pressure regulating valve 3 enables the pressure regulating valve 3 to move left and right, ensuring its stability and position accuracy during the working process.

[0030] Please refer to the appendix Figure 1 , on the front side of the test bench 1, there is a fixedly connected controller 5, which is used to control the entire test device and also used to display the test data.

[0031] The controller 5 is the control core of the entire test device, capable of starting, stopping and setting parameters for the delivery pump 14, the pressure regulating valve 3, and the hydraulic cylinder 13. The controller 5 also has the ability of data acquisition and processing, capable of real-time collecting the data of the pressure sensor 18, the flow sensor 15 and the temperature sensor 16 detection elements, and analyzing and processing them. The controller 5 is also used to display the test data. By using a liquid crystal display screen or a touch screen, it intuitively shows the change curves and values of the pressure, flow and temperature parameters during the test process.

[0032] Please refer to the appendix Figure 4 , there is a mutual connection and penetration between the treatment barrel 10 and the two sliding sleeves 11, and the inner diameters of the two sliding sleeves 11 are slidably connected to the surfaces of the output ends of the two hydraulic cylinders 13.

[0033] The liquid can flow freely between the treatment barrel 10 and the sliding sleeve 11. The sliding of the sliding sleeve 11 with the output end of the hydraulic cylinder 13 ensures the flexible movement of the output end of the hydraulic cylinder 13.

[0034] Please refer to the appendix Figure 3 , at the four corner positions of the bottom of the test bench 1, there are fixedly connected support legs 8.

[0035] The support legs 8 provide stable support for the test bench 1, so that the entire device will not shake or tilt during the working process.

[0036] Please refer to the appendix Figure 4 , there is a fixed connection between the infusion pipe 12 and the treatment barrel 10, and a fixed connection between the top of the infusion pipe 12 and the liquid storage tank 6. The liquid storage tank 6, the treatment barrel 10 and the infusion pipe 12 are mutually connected and penetrated.

[0037] The infusion pipe 12 is connected to the treatment barrel 10 by welding, ensuring the firmness and tightness of the connection, preventing liquid leakage. And the infusion pipe 12 is connected to the liquid storage tank 6, forming a complete liquid transmission channel, enabling the liquid in the liquid storage tank 6 to smoothly enter the treatment barrel 10 for treatment and simulation. The connection of the liquid storage tank 6, the treatment barrel 10 and the infusion pipe 12 ensures the circulation and flow of the liquid, realizing the continuous operation of the testing device.

[0038] Please refer to the appendix Figure 2 , flow sensors 15 are installed on the surfaces of both the delivery pipe 2 and the return pipe 4. The flow sensors 15 are used to measure the liquid flow rate through the replacement valve.

[0039] The flow sensors 15 can accurately measure the liquid flow rate through the replacement valve, providing data for evaluating the flow performance of the replacement valve.

[0040] Please refer to the appendix Figure 2 , the pressure sensor 18 is used to detect the pressure changes at the inlet and outlet of the replacement valve. Temperature sensors 16 are installed on opposite sides of the two connectors 19. The temperature sensors 16 are used to monitor the temperature of the liquid.

[0041] It can promptly capture minute pressure fluctuations, providing data support for analyzing the pressure characteristics of the replacement valve. The temperature sensors 16 can monitor the temperature of the liquid in real time, helping to study the influence of temperature on the performance of the replacement valve, thereby comprehensively evaluating the working performance of the replacement valve under different temperature conditions.

[0042] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A replacement valve testing device, comprising a test bench (1), characterized in that, The bottom of the test bench (1) is fixedly connected with a partition board (7). The right side of the partition board (7) is fixedly connected with a delivery pump (14). The top of the test bench (1) is fixedly connected with a slide rail (20). The surface of the slide rail (20) is slidably connected with two fixing clamps (21). Both of the two fixing clamps (21) are used for fixing the replacement valve. A sliding block (17) is arranged on the opposite side of each of the two fixing clamps (21). The output end of the delivery pump (14) is fixedly provided with a delivery pipe (2). The left side of the partition board (7) is fixedly connected with a liquid storage tank (6). The left side of the liquid storage tank (6) is fixedly connected with a return pipe (4). The tops of the delivery pipe (2) and the return pipe (4) are both fixedly connected with a connecting piece (19). A simulation structure is arranged at the bottom left of the partition board (7). The simulation structure is used for simulating the change of hydraulic oil during the use of hydraulic oil. The input end of the delivery pump (14) is fixedly provided with a connecting pipe (9). The left end of the connecting pipe (9) is fixedly connected with the liquid storage tank (6). Pressure regulating valves (3) are fixedly connected to the adjacent sides of the two connecting pieces (19). Pressure sensors (18) are installed on the surfaces of the two pressure regulating valves (3).

2. The washing and changing valve testing device according to claim 1, characterized in that The simulation structure includes two hydraulic cylinders (13). Both of the two hydraulic cylinders (13) are fixedly connected with the partition board (7). Slide sleeves (11) are arranged on the surfaces of the output ends of the two hydraulic cylinders (13). A processing barrel (10) is fixedly connected between the two slide sleeves (11). An infusion pipe (12) is installed on the surface of the processing barrel (10).

3. The washing and changing valve testing device according to claim 1, characterized in that, The slide rail (20) sequentially penetrates through the two sliding blocks (17). Both of the two sliding blocks (17) are slidably connected with the slide rail (20).

4. A replacement valve testing device according to claim 1, characterized in that, Both of the two connecting pieces (19) are fixed to the pressure regulating valves (3) by bolts. The bottom sides of the surfaces of the two pressure regulating valves (3) are fixedly connected with the sliding blocks (17).

5. The washing and replacement valve testing device according to claim 1, characterized in that, A controller (5) is fixedly connected to the front side of the test bench (1). The controller (5) is used for controlling the whole test device and is also used for displaying test data.

6. The washing and replacement valve testing device according to claim 2, wherein The processing barrel (10) communicates with the two slide sleeves (11). The inner diameters of the two slide sleeves (11) are slidably connected with the surfaces of the output ends of the two hydraulic cylinders (13).

7. A replacement valve testing device according to claim 1, characterized in that, Support legs (8) are fixedly connected to the four corner positions at the bottom of the test bench (1).

8. The washing and replacement valve testing device according to claim 2, characterized in that, The infusion pipe (12) is fixedly connected with the processing barrel (10). The top of the infusion pipe (12) is fixedly connected with the liquid storage tank (6). The liquid storage tank (6), the processing barrel (10) and the infusion pipe (12) communicate with each other.

9. A test device for a changeable washing valve according to claim 1, characterized in that, Flow sensors (15) are installed on the surfaces of the delivery pipe (2) and the return pipe (4). The flow sensors (15) are used for measuring the liquid flow rate passing through the replacement valve.

10. A change valve testing device according to claim 1, characterized in that, The pressure sensors (18) are used for detecting the pressure change at the inlet and outlet of the replacement valve. Temperature sensors (16) are installed on the opposite sides of the two connecting pieces (19). The temperature sensors (16) are used for monitoring the temperature of the liquid.

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