Electromagnetic pilot operated valve detection device

Abstract

The utility model provides an electromagnetic pilot operated valve detection device which comprises a control touch screen, an automatic detection device pump switch-on is installed on a control panel at the bottom end of the control touch screen through a circuit, and an automatic detection device pump switch-off is arranged on the right side of the automatic detection device pump switch-on. And a device reversing switch is arranged on the inner side of the circuit groove on the right side of the automatic detection device pump. Existing detection means can only be used for visual inspection, electrical test, functional test, data analysis and the like manually in a classified mode, the consumed time is long, and needed equipment is complex. According to the detection equipment, closed-loop control is realized under the action of related connecting wires such as a detector host, a Taida frequency converter, a hydraulic pump station, a cylindrical filter, an electromagnetic pilot valve connecting wire and a power line, electrical and functional detection is automatically carried out, detection data is analyzed, a detection result is directly output to a display screen, and safe, automatic and efficient detection is realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to the electromagnetic pilot valve detection field, specifically, an electromagnetic pilot valve detection device. BACKGROUND

[0002] The electromagnetic pilot valve in the electro-hydraulic control system of hydraulic support is difficult to directly observe and detect because of compact internal structure, multiple precise parts, high sealing performance requirement, bad working environment, internal part loosening and damage caused by vibration and impact during work, and the damage being difficult to find, and complex drive circuit, abnormal work caused by circuit failure or improper parameter setting, and the problems being detected by professional electrical equipment. The existing detection means can only manually and separately perform visual inspection, electrical test, function test, data analysis and the like, and the time is long, and the required equipment is complicated. Therefore, the electromagnetic pilot valve detection device is provided. UTILITY MODEL CONTENTS

[0003] The utility model discloses a kind of electromagnetic pilot valve detection devices, including control touch screen, the control touch screen bottom control panel circuit is equipped with automatic detection device pump open, the right side of the automatic detection device pump open is provided with automatic detection device pump off, the right side circuit slot of the automatic detection device pump off is provided with device reversing switch.

[0004] As preferred technical scheme of the utility model, the control touch screen screen surface is covered with a layer of protective film, which enhances the service life of the control touch screen.

[0005] As preferred technical scheme of the utility model, the automatic detection device pump open and the automatic detection device pump off, and the device reversing switch are respectively sequentially corresponding to opening button, closing button, emergency stop button below.

[0006] As preferred technical scheme of the utility model, the opening button and the closing button, and the emergency stop button are still circuit-mounted on control panel.

[0007] As preferred technical scheme of the utility model, the control touch screen is fixed with test-bed main body below, the test-bed main body middle segment upper side is pressure area, and working pressure gauge and pump station pressure gauge are arranged in pressure area.

[0008] As preferred technical scheme of the utility model, the test-bed main body pressure area is provided with measured pilot valve, and test tool is mounted below the measured pilot valve.

[0009] As the preferred technical scheme of the utility model, the test tool is installed above the test bench main body, and a manual pressure stabilizing valve is arranged on the outer plate of the test tool.

[0010] As the preferred technical scheme of the utility model, the test bench main body pressure area is slidably installed with a protective door, a glass is embedded in the door frame of the protective door, and a door handle is bolted to the door frame of the protective door.

[0011] As the preferred technical scheme of the utility model, a door sliding rail is embedded on the outer edge of the top of the test bench main body, and the bottom of the protective door is embedded in the door sliding rail.

[0012] Compared with the prior art, the utility model has the beneficial effects that: in the scheme of the utility model, the existing detection means can only manually and separately perform visual inspection, electrical test, function test, data analysis and the like, and the time consumption is long, and the required equipment is complicated. However, the detection equipment realizes closed-loop control under the action of the detection instrument host, delta frequency converter, hydraulic pump station, cylindrical filter, electromagnetic pilot valve connecting line, power line and the like, and automatically performs electrical and function detection and analyzes the detection data, directly outputs the detection result to the display screen, and realizes safe, automatic and efficient detection. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 The utility model provides structure schematic diagram;

[0014] Figure 2 The utility model provides front view structure schematic diagram;

[0015] Figure 3 The utility model provides internal structure schematic diagram;

[0016] Figure 4 The utility model provides partial structure schematic diagram;

[0017] Figure 5 The utility model provides electromagnetic pilot valve test bench hydraulic principle diagram;

[0018] Figure 6 The utility model provides electromagnetic pilot valve test bench detection principle diagram.

[0019] Indicated in the drawing:

[0020] 1, control touch screen;2, automatic detection device pump open;3, automatic detection device pump off;4, device reversing switch;5, start button;6, close button;7, emergency stop button;8, test bench main body;9, working pressure gauge;10, pump station pressure gauge;11, measured pilot valve;12, test tool;13, manual pressure stabilizing valve;14, protective door;15, door handle;16, door sliding rail. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be described clearly and completely below with reference to the drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments.

[0022] Therefore, the following detailed description of the embodiments of the present application is not intended to limit the scope of the claimed present application, but only represents some embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application. It should be noted that the embodiments in the present application and the features and technical schemes in the embodiments can be combined with each other without conflict, and attention should be paid to the fact that similar reference numerals and letters represent similar items in the following drawings, so that once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0023] Embodiment 1: Please refer to Figure 1 Figure 6 An electromagnetic pilot valve detection device, including a control touch screen 1, the circuit installed with an automatic detection device pump open 2 on the control panel at the bottom end of the control touch screen 1, the automatic detection device pump open 2 is provided with an automatic detection device pump off 3 on the right side, and the device reversing switch 4 is arranged in the circuit slot on the right side of the automatic detection device pump off 3.

[0024] The screen surface of the control touch screen 1 is covered with a protective film, which enhances the service life of the control touch screen 1.

[0025] The automatic detection device pump open 2 and the automatic detection device pump off 3, and the device reversing switch 4 are respectively and sequentially corresponding to the opening button 5, the closing button 6 and the emergency stop button 7 below.

[0026] The opening button 5 and the closing button 6, and the emergency stop button 7 are still circuit-mounted on the control panel.

[0027] A test bench main body 8 is fixed below the control touch screen 1, and a pressure area is above the middle section of the test bench main body 8, and a working pressure gauge 9 and a pump station pressure gauge 10 are arranged inside the pressure area.

[0028] A measured pilot valve 11 is arranged in the pressure area of the test bench main body 8, and a test tool 12 is mounted below the measured pilot valve 11.

[0029] The test tool 12 is mounted above the test bench main body 8, and a manual pressure stabilizing valve 13 is arranged on the outer plate of the test tool 12.

[0030] ​The test bench body 8 is slidably installed with a protective door 14 in the pressure area. The door frame of the protective door 14 is embedded with glass, and the door frame of the protective door 14 is bolted with a door handle 15 outside

[0031] The test bench body 8 is slidably installed with a protective door 14 in the pressure area. The door frame of the protective door 14 is embedded with glass, and the door frame of the protective door 14 is bolted with a door handle 15 outside

[0032] First, in the preparation stage, it is necessary to check whether the pressure pump crankcase lubricating oil tank liquid level is above the red line, and the manual pressure stabilizing valve should not be fully closed to prevent the hydraulic system from being too high when the pump starts, which affects the service life of the pump body, and at the same time check whether the hydraulic pipeline is intact and each U-shaped card installation is reliable and safe.

[0033] Then, the electromagnetic pilot valve is fixed on the test tool with bolts, and the related parts are connected, such as the installation of pressure gauges at the working port, the connection of pilot valve cables, etc.

[0034] Working principle of electromagnetic pilot valve detection device:

[0035] 1. Control part: The control touch screen 1 serves as the main operation interface. Users can perform various operations and settings through the touch screen. The protective film covering the surface of the touch screen can enhance its service life, reduce wear and tear, and damage.

[0036] The control panel is installed with an automatic detection device pump on 2, an automatic detection device pump off 3, and a device reversing switch 4. By operating these components, the running state of the detection device can be controlled.

[0037] The automatic detection device pump on 2 is used to start the pump of the detection device, so that it starts to work. The automatic detection device pump off 3 is used to turn off the pump and stop working. The device reversing switch 4 is used to change the working direction or mode of the detection device.

[0038] 2. Button part: Below the automatic detection device pump on 2, the automatic detection device pump off 3, and the device reversing switch 4, there are corresponding on button 5, off button 6, and emergency stop button 7. The on button 5 is used to start the corresponding function, the off button 6 is used to stop the corresponding function, and the emergency stop button 7 is used to quickly stop the operation of the entire detection device in emergency situations to ensure safety.

[0039] 3. Test bench body part: The control touch screen 1 is fixed below the test bench body 8. The middle section of the test bench body 8 is the pressure area, which is internally provided with a working pressure gauge 9 and a pump station pressure gauge 10. The working pressure gauge 9 is used to monitor the pressure of the measured pilot valve 11 in the working state, and the pump station pressure gauge 10 is used to monitor the pressure of the pump station.

[0040] The pressure area is provided with a measured pilot valve 11 for detection. The lower part of the measured pilot valve 11 is provided with a test tool 12 for fixing and connecting the measured pilot valve 11, ensuring its stability and accuracy during detection.

[0041] A manual pressure stabilizing valve 13 is arranged on the outer plate of the test tool 12, which can be used to adjust the pressure to meet different detection needs.

[0042] 4. Safety protection part: the pressure area of the test bench main body 8 is slidingly provided with a protective door 14, and the door frame is embedded with glass for convenient observation of the internal situation. The door frame of the protective door 14 is bolted with a door handle 15 for opening and closing the protective door. The setting of the protective door can play a role in safety protection during detection to prevent accidental injury to the operator.

[0043] During the detection of the electromagnetic pilot valve, the operator sets the detection parameters and operation instructions through the control touch screen 1. The start button 5 of the automatic detection device pump open 2 is pressed to start the pump, and the detection device starts to work. According to the needs, the appropriate working mode is selected through the device reversing switch 4. The measured pilot valve 11 is installed on the test tool 12, and the working pressure gauge 9 and the pump station pressure gauge 10 monitor the pressure in real time. The operator can understand the progress of the detection process by observing the values of the pressure gauges and the situation inside the protective door 14. If abnormal conditions occur, the emergency stop button 7 can be pressed to stop the operation of the detection device. After the detection is completed, the close button 6 of the automatic detection device pump off 3 is pressed to turn off the pump and end the detection

[0044] Next, the operating system is opened, the "emergency stop" button is rotated clockwise, and the "start" button is pressed by hand. Then the "pump open" button is pressed by hand, the 32Mpa button is clicked through the control touch screen, and the "reversing switch" is manually switched to supply power to the upper and lower chambers of the pilot valve. In each chamber power-on condition, the pilot valve electromagnet push rod is debugged to ensure that the electromagnet driving force is at the middle position of the upper and lower limits, and the angle difference between the upper and lower limits should be ≥360°. During the debugging process, each chamber should have no leakage under the power-on / power-off condition, and the reversing should be flexible without jamming.

[0045] In the specific detection process, the following process steps are followed:

[0046] 1. Preparation: the pilot valve is fixed on the test mounting plate with bolts, the pressure gauge is installed and the cable is connected.

[0047] 2. Debugging: set the power supply voltage to DC 12V and the rated current to 130mA to ensure that the valve core adjustment margin is within the specified range, and place it in the middle position.

[0048] 3. Positive low pressure sealing: the liquid inlet control port is 6Mpa, which is maintained for 2min, and whether there is leakage is checked.

[0049] 4. Positive rated pressure seal: inlet control port 31.5 MPa, maintain for 2 min, check if there is no leakage.

[0050] 5. No-load low-pressure reversing performance: when the inlet pressure is 10 MPa, check if the reversing valve is accurately reversed, moves flexibly, and has no jamming.

[0051] 6. No-load high-pressure reversing performance: inlet control port pressure 31.5 MPa, each function cavity is powered separately, observe if the reversing is accurate and the movement is flexible without jamming.

[0052] 7. Install plug: install a spherical stop valve at the tool return port and fix it in place with a U-shaped clamp.

[0053] 8. Overall sealing: inlet supply 6 MPa, start the running-in mode, after the working pressure is stable, stop the liquid supply, check if the pressure value of the pressure gauge has no pressure drop, and if the pilot valve is working normally.

[0054] 9. Low-pressure reversing seal: inlet supply 10 MPa, each function cavity is powered separately, maintain for 2 min, check if there is no leakage; rated pressure reversing seal: inlet supply 31.5 MPa, each function cavity is powered separately, maintain for 2 min, check if there is no leakage.

[0055] 10. Positive strength: all reversing valves are closed, the working port is slowly pressurized to 47.25 MPa, maintain for 3 min, check if the product has no leakage, the parts are not deformed and damaged.

[0056] 11. Reversing strength: all reversing valves are opened, the working port is slowly pressurized to 47.25 MPa, maintain for 3 min, check if the product has no leakage, the parts are not deformed and damaged.

[0057] 12. Positive / reversing low-pressure back pressure safety: when the inlet pressure is 15 MPa and the return pressure is 6 MPa, maintain for 3 min, check if the inlet pressure has no pressure drop.

[0058] 13. Positive / reversing high-pressure back pressure safety: when the inlet pressure is 31.5 MPa and the return pressure is 6 MPa, maintain for 3 min, check if the inlet pressure has no pressure drop.

[0059] 14. Starting voltage: when the inlet pressure is 31.5 MPa, test the minimum voltage of the pilot valve that can work normally.

[0060] Embodiment 2: An electromagnetic pilot valve detection device, under the action of an electromagnetic pilot valve, a detection instrument main machine (a power module NKY2-120W-24V, a Siemens PLC ST30+AM06, a Kunluntongtai touch screen TPC1071GT, an electrically controlled hydraulic one-way valve, a digital and pointer pressure gauge, etc.), a Delta frequency converter 11KW / 380V, a hydraulic pump station 3DY60, a cylinder filter, electromagnetic pilot valve connecting lines, power lines and other related connecting lines, liquid medium will flow through the electromagnetic pilot valve through the detection device, the detection device controls the electromagnetic pilot valve to act according to the provisions, the detection device compares and analyzes the collected signals through the PLC, and outputs the detection results to the display screen.

[0061] To achieve the above object, the following technical scheme is adopted:

[0062] Firstly, the PLC module is communicated with the touch screen, the related functions of the PLC module are controlled, the Delta frequency converter is controlled by the PLC, the motor speed of the hydraulic pump station is controlled by the Delta frequency converter to adjust the output pressure of the pump station, the motor speed is adjusted by detecting the output pressure of the pump station to achieve closed-loop control of the pressure of the pump station. The high-pressure medium output by the hydraulic pump station is filtered through the cylinder filter, and then input into the electrically controlled hydraulic one-way valve. The electrically controlled hydraulic one-way valve is controlled to open and close by the PLC, and unidirectional hydraulic medium is provided to the electromagnetic pilot valve to be tested. At the same time, the hydraulic medium after unidirectional pressure retention can be unloaded.

[0063] Then, the working voltage, working current and working pressure of the measured electromagnetic pilot valve are detected by using the PLC to control the on / off power and working voltage of the measured electromagnetic pilot valve, and the results are uploaded to the touch screen by analyzing and comparing the detection data.

[0064] The specific process of the electromagnetic pilot valve detection device is as follows: ① Preparation: check whether the crankshaft lubricating oil tank liquid level of the pressure pump is above the red line, the manual pressure stabilizing valve should not be completely closed (to prevent the hydraulic system pressure being too high when the pump starts, affecting the service life of the pump body), check whether the hydraulic pipeline is intact, and each U-shaped clamp is installed reliably without safety hazards.

[0065] ② Installation: the electromagnetic pilot valve is fixed on the test tool by bolts.

[0066] ③ Open the operating system: rotate the "emergency stop" clockwise, and press the "start" button by hand;

[0067] ④ Debugging: press the "pump start" button by hand, click the 32Mpa button on the touch screen, and manually switch the "reversing switch" to supply power to the upper and lower cavities of the pilot valve. Under the condition of power on, the electromagnetic iron push rod of the pilot valve is debugged to ensure that the electromagnetic driving force is at the middle position of the upper and lower limits, and the angle difference between the upper and lower limits should be greater than or equal to 360°. During the debugging process, each cavity should not leak under the condition of power on / off, and the reversing should be flexible without jamming.

[0068] The specific process steps are as follows:

[0069] Step 1, preparation: the pilot valve is fixed on the test installation plate with bolts, the working port is installed with a pressure gauge, and the pilot valve cable is connected;

[0070] Step 2, debugging: the supply voltage is DC 12V, the rated current is 130mA; the adjustment margin of the valve core should be in the range, and it is placed in the middle position;

[0071] Step 3, forward low pressure sealing: the inlet control port is 6Mpa, and it is kept for 2min, which should have no leakage.

[0072] Step 4, forward rated pressure sealing: the inlet control port is 31.5Mpa, and it is kept for 2min, which should have no leakage.

[0073] Step 5, no-load low pressure reversing performance: when the inlet pressure is 10MPa, the reversing valve should be accurate, flexible and no jamming;

[0074] Step 6, no-load high pressure reversing performance: the inlet control port pressure is 31.5Mpa, each function cavity is powered separately, and whether the reversing is accurate, flexible and no jamming is observed.

[0075] Step 7, installation of plug: the ball-shaped stop valve is installed in the tool return port, and is fixed in place with a U-shaped clamp

[0076] Step 8, overall sealing: the inlet is supplied with 6Mpa liquid, the break-in mode is started, and after the working pressure is stable, the pressure is kept and the liquid supply is stopped, the pressure value of the pressure gauge has no pressure drop, and the pilot valve is normally powered.

[0077] Step 9, low pressure reversing sealing: the inlet is supplied with 10MPa liquid, each function cavity is powered separately, and kept for 2min, which should have no leakage;

[0078] Rated pressure reversing sealing: the inlet is supplied with 31.5MPa liquid, each function cavity is powered separately, and kept for 2min, which should have no leakage;

[0079] Step 10, forward strength: all reversing valves are closed, the working port is slowly pressurized to 47.25MPa, and kept for 3min, the product should have no leakage, part deformation and damage;

[0080] Step 11, reversing strength: all reversing valves are opened, the working port is slowly pressurized to 47.25MPa, and kept for 3min, the product should have no leakage, part deformation and damage;

[0081] Step 12, forward / reversing low pressure back pressure safety: when the inlet pressure is 15MPa and the return pressure is 6MPa, the pressure is kept for 3min, and the inlet pressure should not have pressure drop;

[0082] Step 13, forward / reversing high pressure back pressure safety: when the inlet pressure is 31.5 MPa, the back pressure is 6 MPa, and the pressure is maintained for 3 min, the inlet pressure should not have a pressure drop;

[0083] Step 14, starting voltage: when the inlet pressure is 31.5 MPa, test how many volts the minimum voltage of the pilot valve can normally work.

[0084] The above examples are only used to illustrate the technical solutions described in the utility model and are not limited to the technical solutions described in the utility model. Although the utility model has been described in detail with reference to the above-described various embodiments, the utility model is not limited to the above-described specific embodiments, so any modification or equivalent replacement of the utility model; all technical solutions and improvements that do not deviate from the spirit and scope of the utility model are included in the scope of the claims of the utility model.

Claims

1. An electromagnetic pilot valve testing device comprising a control touch screen (1), characterized in that, The control touch screen (1) bottom control panel circuit is provided with an automatic detection device pump open (2), the right side of the automatic detection device pump open (2) is provided with an automatic detection device pump off (3), the right side of the automatic detection device pump off (3) is provided with a device reversing switch (4) in the circuit slot.

2. The electromagnetic pilot valve testing device according to claim 1, wherein The control touch screen (1) screen surface is covered with a protective film.

3. The electromagnetic pilot valve testing device according to claim 2, wherein The automatic detection device pump open (2) and the automatic detection device pump off (3), and the device reversing switch (4) are respectively provided with an opening button (5), a closing button (6) and an emergency stop button (7) below.

4. The electromagnetic pilot valve testing device according to claim 3, wherein The opening button (5), the closing button (6) and the emergency stop button (7) are still circuit-mounted on the control panel.

5. The electromagnetic pilot valve testing device according to claim 4, wherein The control touch screen (1) is fixed below a test bench main body (8), the test bench main body (8) is provided with a pressure area above the middle section, and a working pressure gauge (9) and a pump station pressure gauge (10) are arranged inside the pressure area.

6. The electromagnetic pilot valve testing device according to claim 5, wherein The test bench main body (8) is provided with a measured pilot valve (11) in the pressure area, and a test tool (12) is mounted below the measured pilot valve (11).

7. The electromagnetic pilot valve testing device according to claim 6, wherein The test tool (12) is mounted above the test bench main body (8), and a manual pressure stabilizing valve (13) is arranged on the outer plate of the test tool (12).

8. The electromagnetic pilot valve testing device according to claim 7, wherein The test bench main body (8) is provided with a protective door (14) slidingly installed in the pressure area, glass is embedded in the door frame of the protective door (14), and a door handle (15) is connected to the door frame of the protective door (14) by bolts.

9. The electromagnetic pilot valve testing device according to claim 8, wherein The test bench main body (8) is provided with a door sliding rail (16) embedded on the outer edge of the top, and the bottom of the protective door (14) is embedded in the door sliding rail (16).

Images