A main start valve test platform

Abstract

The present invention provides a main start valve test platform, which includes an experimental bench, a support frame is provided corresponding to the experimental bench, a downward pressure cylinder is provided on the support frame, the downward pressure cylinder is connected to a downward pressure block, a clamping cylinder is provided on the experimental bench corresponding to the support frame, the clamping cylinder is connected to a front pressure block and a first sealing block, a main start valve positioning device is provided on the experimental bench corresponding to the downward pressure cylinder, a second sealing block is provided on the experimental bench corresponding to the main start valve positioning device, the main start valve positioning device, the downward pressure cylinder and the clamping cylinder are respectively connected to a main air circuit, the downward pressure block is connected to a control air circuit, a laser photoelectric displacement sensor is provided on the experimental bench corresponding to the lower end of the main start valve positioning device, and the downward pressure cylinder, the clamping cylinder and the laser photoelectric displacement sensor are connected to a control system. The present invention can well improve labor efficiency, reduce detection noise, and effectively protect personal safety.

Description

Technical Field

[0001] The invention relates to the technical field of pneumatic control element detection, and in particular to a main start valve test platform. Background Art

[0002] The main start valve is mainly used to control the operation of the engine gas starter motor. It is an important component of the engine gas starter system. Its quality status is directly related to the performance and reliability of the gas starter system. In the research and development and production process of the main start valve, the performance test of the main start valve is indispensable and is an important evaluation basis for ensuring its reliability.

[0003] At present, the performance test of the main start valve is generally to clamp the main start valve on the bench vise first, then connect the main air inlet and the control air line interface to the air source with the air pipe joint and the hose respectively, open the main air line air source pipeline valve, check whether the main start valve has air leakage, and then press the button on the control air line air source pipeline several times to make the main start valve work and check its action sensitivity. Then, according to the test specification requirements, lower the air source pressure to 4bar (the designed minimum opening pressure of the main start valve), repeat the above work, and test the action sensitivity of the main start valve under the minimum pressure.

[0004] This detection method has the following disadvantages:

[0005] 1. The operating efficiency is too low. When batch testing, each time a main start valve is replaced, it is necessary to re-clamp and re-connect the pipeline, and the gas circuit ball valve must be repeatedly switched on and off and the pressure of the pressure reducing valve must be adjusted;

[0006] 2. The cost is high, because the testing process is cumbersome and requires at least two people to cooperate in the operation. The testing time is long, the manual workload is large, and the manpower and time costs are high;

[0007] 3. The noise is high. During the test, the exhaust is directly discharged into the test environment, which generates high noise;

[0008] 4. It is not conducive to production safety. The reaction force of the exhaust directly acts on the main start valve. If the main start valve is detached from the bench vise and flies out, there is a risk of personal injury. Repeated disassembly and assembly of the test pipeline is also dangerous. Summary of the invention

[0009] In view of the above technical problems, the present invention provides a main start valve test platform, which can improve labor efficiency, reduce detection noise, and effectively protect personal safety.

[0010] The technical solution is as follows: a main start valve test platform, characterized in that: it includes a test bench, a support frame is arranged corresponding to the test bench, a downward pressure cylinder is arranged on the support frame, the downward pressure cylinder is connected to the downward pressure block, a clamping cylinder is arranged on the test bench corresponding to the support frame, the clamping cylinder is connected to the front pressure block and the first sealing block, a main start valve positioning device is arranged on the test bench corresponding to the downward pressure cylinder, a second sealing block is arranged on the test bench corresponding to the main start valve positioning device, the main start valve positioning device, the downward pressure cylinder and the clamping cylinder are respectively connected to the main air circuit, the downward pressure block is connected to the control air circuit, a laser photoelectric displacement sensor is arranged on the test bench corresponding to the lower end of the main start valve positioning device, and the downward pressure cylinder, the clamping cylinder and the laser photoelectric displacement sensor are connected to a control system.

[0011] Its further characteristics are that the main start valve positioning device is a guide slide groove, and the guide slide groove is arranged on the experimental bench; a support block is arranged corresponding to the main start valve positioning device, and the support frame is arranged on the experimental bench, and the second sealing block and the support block are arranged on the support frame; a travel switch is arranged on the experimental bench corresponding to the clamping cylinder; a clamping cylinder mounting seat is arranged on the experimental bench, and the clamping cylinder is connected to the experimental bench via a clamping cylinder supporting seat; the clamping cylinder is connected to a movable support frame, and the front pressure block and the first sealing block are arranged on the movable support frame. The movable support frame is provided with a switch block cooperating with the travel switch; the movable support frame is connected to the experimental bench through a guide rail; the control system is provided with a main air circuit pressure gauge, and the main air circuit pressure gauge is connected to the main air circuit through a main air circuit control button; the control air circuit includes a high-pressure control air circuit and a low-pressure control air circuit, and the control system is respectively provided with a high-pressure control air circuit pressure gauge connected to the high-pressure control air circuit and a low-pressure control air circuit pressure gauge connected to the low-pressure control air circuit; the high-pressure control air circuit is connected to the high-pressure control air circuit button, and the low-pressure control air circuit is connected to the low-pressure control air circuit button.

[0012] The present invention adopts the above structure, a downward pressure cylinder is arranged on the support frame of the experimental bench, the downward pressure cylinder is connected to the downward pressure block, a clamping cylinder is arranged on the experimental bench corresponding to the support frame, the clamping cylinder is connected to the front pressure block and the first sealing block, a main starting valve positioning device is arranged on the experimental bench corresponding to the downward pressure cylinder, a second sealing block is arranged on the experimental bench corresponding to the main starting valve positioning device, the main starting valve positioning device, the downward pressure cylinder and the clamping cylinder are respectively connected to the main air circuit, the downward pressure block is connected to the control air circuit, and a main starting valve positioning device corresponding to the main starting valve positioning device is arranged under the experimental bench. A laser photoelectric displacement sensor is installed. The pressing cylinder, the clamping cylinder and the laser photoelectric displacement sensor are connected to the control system. The main start valve is placed on the main start valve positioning device. The main air circuit ventilates the pressing cylinder, the clamping cylinder and the main start valve, compresses the main start valve and seals the air inlet and outlet of the main start valve at the same time. High-pressure control air and low-pressure control air are introduced into the control air circuit. The test results of the main start valve are detected by the laser photoelectric displacement sensor, which can better improve labor efficiency, reduce detection noise, and effectively protect personal safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the main start valve test platform of the present invention.

[0014] 1. Experimental bench, 2. Support frame, 3. Pressing cylinder, 4. Pressing block, 5. Clamping cylinder, 6. Front pressing block, 7. First sealing block, 8. Positioning device of main start valve, 9. Second sealing block, 10. Support block, 11. Main gas circuit, 12. Control gas circuit, 13. Laser photoelectric displacement sensor, 14. Control box, 15. Travel switch, 16. Mobile support frame, 17. Switch block, 18. Guide rail, 19. Gas circuit pressure gauge, 20. Main gas circuit control button, 21. High-pressure control gas circuit pressure gauge, 22. Low-pressure control gas circuit pressure gauge, 23. Connect high-pressure control gas circuit button, 24. Low-pressure control gas circuit button, 25. Main start valve, 26. Travel indicator light, 27. Clamping cylinder mounting seat, 28. Control system, 29. Guide slide. DETAILED DESCRIPTION

[0015] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0016] See Figure 1A main start valve test platform, which includes a test bench 1, a support frame 2 is provided corresponding to the test bench 1, a downward pressure cylinder 3 is provided on the support frame 2, the downward pressure cylinder 3 is connected to the downward pressure block 4, a clamping cylinder 5 is provided on the test bench 1 corresponding to the support frame 2, a clamping cylinder mounting seat 27 is provided on the test bench 1, the clamping cylinder 5 is installed on the test bench 1 through the clamping cylinder mounting seat 27, the clamping cylinder 5 is connected to the front pressure block 6 and the first sealing block 7, a main start valve positioning device 8 is provided on the test bench 1 corresponding to the downward pressure cylinder 3, a second sealing block 9 and a support block 10 are provided on the test bench 1 corresponding to the main start valve positioning device 8, the main start valve positioning device 8, the downward pressure cylinder 3 and the clamping cylinder 5 are separately The pressure block 4 is connected to the main air circuit 11, the pressure block 4 is connected to the control air circuit 12, and a laser photoelectric displacement sensor 13 is provided under the experimental bench 1 corresponding to the main start valve positioning device 8. The pressure cylinder 3, the clamping cylinder 5 and the laser photoelectric displacement sensor 13 are connected to the control system 14. The main start valve is placed on the main start valve positioning device. The main air circuit ventilates the pressure cylinder, the clamping cylinder and the main start valve, compresses the main start valve and seals the inlet and outlet of the main start valve at the same time, and high-pressure control air and low-pressure control air are introduced into the control air circuit. The detection test result of the main start valve is detected by the laser photoelectric displacement sensor, which can better improve labor efficiency, reduce detection noise, and effectively protect personal safety.

[0017] The main start valve positioning device 8 is a guide slide groove, which is arranged on the experimental bench 1 to ensure the stability of the position of the main start valve when it is placed, to ensure the sealing effect of the subsequent main start valve inlet and outlet seals, and at the same time to ensure the stability of the lateral movement of the main start valve through the slide groove.

[0018] The support frame 2 is arranged on the experimental bench frame 1, and the second sealing block 9 and the third sealing block support block 10 are arranged on the support frame 2, so that the structure of the main start valve test platform is simpler.

[0019] A travel switch 15 is provided on the test bench 1 corresponding to the clamping cylinder 5, the clamping cylinder 5 is connected to the movable support frame 16, the front pressure block 6 and the first sealing block 7 are arranged on the movable support frame 16, and the movable support frame 16 is provided with a switch block 17 cooperating with the travel switch 15, and the front pressure block and the first sealing block are arranged on the movable support frame, which ensures the stability of the support of the front pressure block and the first sealing block, thereby ensuring the sealing effect of the subsequent main starting valve inlet and outlet seals.

[0020] The movable support 16 is connected to the experimental bench frame 1 through the guide rail 18 to ensure the stability of the movement of the front pressing block and the first sealing block when they move simultaneously with the movable support.

[0021] The control system 28 is arranged in the control box 14, and a main air circuit pressure gauge 19 is arranged on the control box 14. The main air circuit pressure gauge 19 is connected to the main air circuit 11 through a main air circuit control button 20. The control air circuit 12 includes a high-pressure control air circuit (not shown in the figure) and a low-pressure control air circuit (not shown in the figure). The control system 13 is respectively provided with a high-pressure control air circuit pressure gauge 21 connected to the high-pressure control air circuit and a low-pressure control air circuit pressure gauge 22 connected to the low-pressure control air circuit. The high-pressure control air circuit 21 is connected to a high-pressure control air circuit button 23, and the low-pressure control air circuit 22 is connected to a low-pressure control air circuit button 24. This structure is the specific control structure of the main start valve test platform, which realizes simple and convenient control. In fact, the present invention can also adopt a separate control method to control the clamping cylinder, the pressing cylinder, the main start valve and the pressing block separately.

[0022] The following briefly describes the action process of the present invention in conjunction with the accompanying drawings:

[0023] 1. Turn on the air source and power supply of the control system 28 in the control box 14, and then adjust the pressure regulating valve in the control box to set the main air pressure as required, and confirm it through the display of the main air pressure gauge 19. Check whether the clamping cylinder 5 and the pressing cylinder 3 are reset.

[0024] 2. Set the high and low pressure control gas line pressures as required by adjusting the two-way pressure regulating valves of the control system 28 in the control box 14. Observe and confirm the displayed values ​​of the high pressure control gas line pressure gauge 21 and the low pressure control gas line pressure gauge 22.

[0025] 3. Place the main start valve along the guide groove into the main start valve positioning device 8 in the specified direction.

[0026] 4. Open the main air circuit control button 20, tighten the cylinder 5 and the pressing cylinder 3 and clamp the main starting valve 25. The triggering gas signal of the travel switch 15 conducts the main air circuit 11 of the starting valve to intake air and allows the control air circuit 12 to receive air.

[0027] 5. Press the low-pressure control air circuit button 24 in a jog motion to control the air pressure to push the valve core through the pressing block 4 and open the main start valve. The laser photoelectric displacement sensor 13 detects the movement displacement of the valve core through the pressure relief hole at the bottom of the main start valve 25, and displays the result through the travel indicator light 26. Repeat the operation as required to verify the test results.

[0028] 6. Repeatedly press the high pressure control gas circuit button 21 to obtain the same test process.

[0029] 7. Close the main gas circuit control knob 20, the main gas circuit is cut off, the tightening cylinder 5 and the pressing cylinder 3 are reset, the main starting valve is removed, and the test is completed.

[0030] Beneficial effects of the main start valve test platform of the present invention:

[0031] 1. The operation is simpler. This method does not require repeated disassembly and assembly of the pipeline. The clamping work is efficient and reliable, which greatly improves the efficiency of the test work;

[0032] 2. Greatly reduced testing costs, one person can complete all operations, and the testing cycle is shortened.

[0033] 3. It only has the function of pressure relief but does not exhaust a large amount of air, which reduces energy consumption and saves costs. It also eliminates noise.

[0034] 3. Effectively obtain the inspection and test results, and can directly and conveniently obtain the operating status of the main start valve.

[0035] 4. To ensure the production safety of the test work, several working cylinders clamp the main start valve in all directions, the gas is not directly discharged into the air, no reaction force is generated during operation, and there is no disadvantage caused by repeated disassembly and assembly of the interface.

[0036] The present invention and its embodiments are described schematically above, which is not restrictive. What is shown in the accompanying drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Ordinary technicians in the field can be inspired by it and, without departing from the purpose of the present invention, creatively design structural methods and embodiments similar to the technical solution, which should all fall within the scope of protection of the present invention.

Claims

1. A main start valve test platform, characterized in that: The invention comprises a test bench (1), a support frame (2) being arranged corresponding to the test bench (1), a downward pressure cylinder (3) being arranged on the support frame (2), the downward pressure cylinder (3) being connected to a downward pressure block (4), a clamping cylinder (5) being arranged on the test bench (1) corresponding to the support frame (2), the clamping cylinder (5) being connected to a front pressure block (6) and a first sealing block (7), a main start valve positioning device (8) being arranged on the test bench (1) corresponding to the downward pressure cylinder (3), and a main start valve positioning device (8) being arranged on the test bench (1) corresponding to the downward pressure cylinder (3). The main start valve positioning device (8) is provided with a second sealing block (9); the main start valve positioning device (8), the pressing cylinder (3) and the clamping cylinder (5) are respectively connected to a main air circuit (11); the pressing block (4) is connected to a control air circuit (12); a laser photoelectric displacement sensor (13) is provided on the experimental bench (1) corresponding to the lower end of the main start valve positioning device (8); the pressing cylinder (3), the clamping cylinder (5) and the laser photoelectric displacement sensor (13) are connected to a control system (28); The main start valve positioning device (8) is a guide slide groove (29), and the guide slide groove (29) is arranged on the experimental bench (1); A support block (10) is provided corresponding to the main start valve positioning device (8), the support frame (2) is provided on the experimental bench (1), and the second sealing block (9) and the support block (10) are provided on the support frame (2); The experimental bench (1) is provided with a travel switch (15) corresponding to the clamping cylinder (5); The experimental bench (1) is provided with a clamping cylinder mounting seat (27), and the clamping cylinder (5) is connected to the experimental bench (1) via the clamping cylinder mounting seat (27); The clamping cylinder (5) is connected to a movable support frame (16), the front pressure block (6) and the first sealing block (7) are arranged on the movable support frame (16), and the movable support frame (16) is provided with a switch stopper (17) that cooperates with the travel switch (15); A main gas circuit pressure gauge (19) is provided on the control system (28), and the main gas circuit pressure gauge (19) is connected to the main gas circuit (11) via a main gas circuit control button (20); The control gas circuit (12) comprises a high-pressure control gas circuit and a low-pressure control gas circuit, and the control system (28) is provided with a high-pressure control gas circuit pressure gauge (21) connected to the high-pressure control gas circuit and a low-pressure control gas circuit pressure gauge (22) connected to the low-pressure control gas circuit, respectively; The high-pressure control gas circuit is connected to a high-pressure control gas circuit button (23), and the low-pressure control gas circuit is connected to a low-pressure control gas circuit button (24); The main air circuit control button (20) is turned on, the clamping cylinder (5) and the pressing cylinder (3) are clamped and the main start valve (25) is clamped, and the trigger air signal of the travel switch (15) is connected to the main air circuit (11) of the start valve to supply air, and the control air circuit (12) is supplied with air; The low-pressure control air circuit button (24) is pressed in a momentary manner, and the control air pressure pushes the valve core through the pressing block (4) to open the main start valve; the laser photoelectric displacement sensor (13) detects the movement displacement of the valve core through the pressure relief hole at the bottom of the main start valve (25), and displays the result through the travel indicator light (26); the operation is repeated several times according to the test requirements to verify the test results; Repeatedly press the high pressure control gas line button (23) to obtain the same test process; Close the main gas line control knob (20), the main gas line is cut off, the tightening cylinder (5) and the pressing cylinder (3) are reset, and the main starting valve is removed. The test is completed.

2. A main start valve test platform according to claim 1, characterized in that: The movable support frame (16) is connected to the experimental bench frame (1) via a guide rail (18).

3. A main start valve test platform according to claim 1, characterized in that: A main gas circuit pressure gauge (19) is provided on the control system (28), and the main gas circuit pressure gauge (19) is connected to the main gas circuit (11) via a main gas circuit control button (20).

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