An automatic testing device and method for overhaul performance of operating mechanisms.

Abstract

An overhauling performance automatic testing device of an operating mechanism and a testing method thereof, comprising a stroke simulation display module, an energy storage motor control module, a stroke node measurement module, an oil pressure measurement module, a pressure relief valve control module, a switching control module and a testing system module, the testing system module is used for controlling the stroke simulation display module, the energy storage motor control module, the stroke node measurement module, the oil pressure measurement module, the pressure relief valve control module and the switching control module to operate coordinately, and displaying the testing result. Through the cooperation of the above modules, the performance test of the overhauled operating mechanism is realized, the measurement time is greatly reduced, the measurement accuracy is greatly improved, the efficiency of the operating mechanism performance test is improved, and it has great significance for guaranteeing the stable operation of the power grid.

Description

Technical Field

[0001] This invention relates to the field of high-voltage circuit breaker operating mechanism maintenance technology, and in particular to an automatic testing device and method for the overhaul performance of the operating mechanism. Background Technology

[0002] During the overhaul and reassembly of the operating mechanism, it is necessary to test the status of its stroke nodes, disc spring energy storage pressure, and secondary signals of the auxiliary module control circuit to ensure that the operating mechanism's performance meets the testing requirements after reassembly. Currently, the stroke test of the operating mechanism after overhaul involves installing mechanical measuring instruments on the stroke rod of the operating mechanism. After the operating mechanism is fully charged, the pressure is gradually released manually, and the opening and closing sounds of the nodes are listened to. Then, the node logic is manually measured and the data of each node is recorded and compared with the standard reference values. The method of adjusting the stroke board nodes is then used for measurement based on maintenance experience. Measuring the secondary signals of the auxiliary module and the opening and closing functions of the operating mechanism is mainly accomplished by switching the opening and closing actions slowly during manual energy storage. Currently, this manual measurement method requires many personnel, has low operational accuracy, slow manual operation speed, and low testing efficiency. Summary of the Invention

[0003] The main objective of this invention is to provide an automatic testing device and method for the overhaul performance of operating mechanisms. By replacing manual measurement operations with mechanical automation, the device collects equipment information through sensors and other means, processes and converts the information, and transmits the data to the testing system module for storage and display. This reduces measurement time, improves testing accuracy, and increases the efficiency of performance testing after overhaul of operating mechanisms.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: an automatic testing device for the overhaul performance of an operating mechanism, comprising:

[0005] The stroke simulation display module is electrically connected to the limit switch device on the operating mechanism via a first cable. The stroke simulation display module is used to display the opening and closing status of each limit switch node on the limit switch device when the disc spring stroke changes during the energy storage process.

[0006] An energy storage motor control module is electrically connected to the energy storage motor on the operating mechanism via a second cable. The energy storage motor control module is used to control the start and stop of the energy storage motor.

[0007] The stroke node measurement module is electrically connected to a displacement sensor via a third cable. The displacement sensor is mounted on the operating mechanism via a bracket, and the measuring rod of the displacement sensor abuts against the stroke rod of the operating mechanism. The stroke node measurement module is used to measure the displacement of the stroke rod.

[0008] The hydraulic pressure measurement module is used to measure the elastic potential energy of the disc spring in the operating mechanism. The elastic potential energy stored in the disc spring during compression is reflected by measuring the hydraulic pressure of the high-pressure cylinder inside the operating mechanism.

[0009] A pressure relief valve control module is used to control the opening and closing of the pressure relief valve on the operating mechanism;

[0010] The opening and closing control module is electrically connected to the coil of the solenoid valve of the operating mechanism via a fourth cable. The opening and closing control module is used to control the flow path of the solenoid valve of the operating mechanism.

[0011] The test system module is used to control the coordinated operation of the stroke simulation display module, energy storage motor control module, stroke node measurement module, oil pressure measurement module, pressure relief valve control module, and opening / closing control module, and to display the test results.

[0012] The travel simulation display module uses a display screen or indicator lights to display the opening and closing status of each travel switch node on the travel switch device during the process of the operating mechanism from starting pressure to completing energy storage, as well as the termination status.

[0013] The energy storage motor control module also includes a time display module, which is used to display the time from the start-up to the stop of the energy storage motor pressurization.

[0014] The oil pressure measurement module uses a pressure sensor, which is installed on the pressure measurement interface on the operating mechanism and is electrically connected to the test system module. Alternatively, the oil pressure measurement module uses an electric contact pressure gauge, which is connected to the pressure measurement interface pipeline and is electrically connected to the test system module.

[0015] The pressure relief valve control module includes an actuator, which includes a motor. The output shaft of the motor is connected to one end of a rotating sleeve. A telescopic rod is installed at the other end of the rotating sleeve via a spline joint. A mating joint is installed at the end of the telescopic rod located outside the rotating sleeve. The mating joint is adapted to the pressure relief valve. A spring is installed between the rotating sleeve and the telescopic rod. The motor is electrically connected to the test system module via a fifth cable.

[0016] The motor is mounted on a support plate, which is fixed to a clamp. The clamp is used to connect and fix the motor to the operating mechanism.

[0017] The test system module includes a controller and a display screen. The controller is used to coordinate the operation of the stroke simulation display module, the energy storage motor control module, the stroke node measurement module, the oil pressure measurement module, the pressure relief valve control module, and the opening and closing control module. The display screen is used to display the test results.

[0018] It also includes an auxiliary node secondary signal testing module, which is electrically connected to the auxiliary node on the operating mechanism via a sixth cable. The auxiliary node secondary signal testing module is used to detect whether the secondary signals of the auxiliary node on the operating mechanism are correct; the auxiliary node secondary signal testing module is controlled by the test system module.

[0019] A method for testing the overhaul performance of an operating mechanism, used for performance testing of the operating mechanism, employs an automatic testing device for the overhaul performance of the operating mechanism, and the testing method includes the following steps:

[0020] S1. Energy Storage Time Measurement: The pressure relief valve is closed by the pressure relief valve control module, and the energy storage motor is started by the energy storage motor control module. When the energy storage motor reaches the pressure stop node, it stops. The energy storage motor control module records the energy storage running time of the energy storage motor and transmits the data synchronously to the test system module for recording. After that, the energy storage motor continues to run. When the energy storage reaches the overpressure node, the disc spring energy storage reaches the maximum value, and the energy storage motor stops running.

[0021] S2. Disc Spring Travel Node Measurement: When the energy storage motor stops running, the travel simulation display module determines whether the logic of the eight sets of travel switch nodes of the travel switch device is correct. Then, the pressure relief valve is released through the pressure relief valve control module. When the travel of the travel rod passes through the travel nodes in sequence from overpressure, stop pressure, start pressure, open / close alarm, open / close lockout, close / open alarm, close / open lockout, open alarm, and open lockout, the travel simulation display module performs signal logic conversion on the position of the eight sets of travel switch nodes in sequence during the pressure relief process. At the same time, the travel node measurement module reads the travel data of each node status and synchronously transmits the measured travel data of each node to the test system module for recording.

[0022] S3, Disc Spring Hydraulic Pressure Measurement: The energy storage motor is started again through the energy storage motor control module to pressurize the operating mechanism to the fully charged state. Then, the pressure relief valve is released through the pressure relief valve control module. When the travel of the travel lever passes through the five travel nodes in sequence, namely overpressure, stop pressurization, open / close interlock, close / open interlock, and open interlock, the disc spring hydraulic pressure is read through the hydraulic pressure measurement module. The hydraulic pressure data of each node is simultaneously transmitted to the test system module for recording.

[0023] S4. Auxiliary Node Secondary Signal Test: When the operating mechanism is in the closed energy storage state, the pressure relief valve is opened through the pressure relief valve control module to completely depressurize the operating mechanism. Then, the pressure relief valve is closed. The energy storage motor control module controls the energy storage motor to run. When the disc spring compresses a short distance, the energy storage motor stops. The opening and closing control module controls one of the two opening coils of the solenoid valve on the operating mechanism, causing the opening solenoid valve to actuate and switching the oil circuit of the operating mechanism to the opening state. Afterward, the energy storage motor starts, and the operating mechanism begins energy storage. After energy storage is completed, the energy storage motor stops, and the operating mechanism is in the open energy storage state. When the operating mechanism is in the open energy storage state, the pressure relief valve control module opens the pressure relief valve... The pressure relief valve is used to completely depressurize the operating mechanism. Then, the pressure relief valve is closed by the pressure relief valve control module. The energy storage motor control module starts the energy storage motor. When the disc spring begins to compress, the energy storage motor stops after the disc spring has compressed a short distance. The closing and opening control module controls the closing coil of the solenoid valve on the operating mechanism, causing the closing solenoid valve to actuate and switch the operating mechanism to the closing state. The energy storage motor starts, and the operating mechanism begins to store energy. After the energy storage is completed, the energy storage motor shuts off. At this time, the operating mechanism is in the closing energy storage state. The above operation is repeated. The auxiliary node control module controls one closing solenoid valve and two opening solenoid valves respectively to detect the operating performance of the operating mechanism in the slow opening and slow closing state.

[0024] S5. Pressure Holding State Measurement: Under the slow opening and slow closing operation conditions of the operating mechanism in the auxiliary node secondary signal test, the operating mechanism is first adjusted to the closing energy storage state. After standing for 24 hours, the eight sets of travel nodes in the travel switch device are checked through the travel simulation display module to check whether the starting pressure node is conductive. Then, the displacement change of the travel rod before and after pressure holding is measured through the travel node measurement module. When the starting pressure node is not conductive, that is, the data on the travel meter drops by less than 2mm after 24 hours, the pressure holding test of the operating mechanism in the closing energy storage state is qualified. Then, the operating mechanism is switched to the opening energy storage state for pressure holding test. When both the closing energy storage state and the opening energy storage state are qualified, the operating mechanism is qualified for pressure holding.

[0025] The present invention has the following beneficial effects:

[0026] 1. This invention achieves automated performance testing of operating mechanisms after overhaul by coordinating the operation of a test system module that controls the stroke simulation display module, energy storage motor control module, stroke node measurement module, oil pressure measurement module, pressure relief valve control module, circuit breaker opening and closing control module, auxiliary node secondary signal testing module, and circuit breaker opening and closing control module, and analyzing and displaying the test results. The measurement time is reduced to 20% of the original time compared to purely manual measurement, improving the efficiency of operating mechanism performance testing and significantly increasing measurement accuracy. This invention has important reference value for the overhaul performance testing of operating mechanisms and is of great significance for ensuring the stable operation of the power grid.

[0027] 2. This device replaces manual measurement operations with mechanical automation. It collects equipment information through sensors and other means, processes and converts the information, and transmits the data to the testing system module for storage and display, thereby reducing measurement time and improving testing accuracy.

[0028] 3. This invention has an automatic mode and a manual mode. In automatic mode, it can automatically complete the testing of various performance data after the overhaul of the operating mechanism and output the test report with one click. The operation method is simple and quick. In manual mode, semi-automatic measurement and reading can be performed through the button switches under each module. Attached Figure Description

[0029] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0030] Figure 1 This is a control diagram for the present invention.

[0031] Figure 2 This is a schematic diagram of the first viewpoint structure of the testing device of the present invention.

[0032] Figure 3 This is a schematic diagram of the second viewpoint structure of the testing device of the present invention.

[0033] Figure 4 This is a schematic diagram of the third perspective structure of the testing device of the present invention.

[0034] Figure 5 This is a schematic diagram of the actuator structure of the pressure relief valve control module of the present invention.

[0035] In the diagram: travel simulation display module 10, first cable 11;

[0036] Energy storage motor control module 20, second cable 21;

[0037] Travel node measurement module 30, third cable 31, bracket 32, displacement sensor 33;

[0038] Hydraulic pressure measurement module 40;

[0039] Pressure relief valve control module 50, fifth cable 51, actuator 52, clamp 521, support plate 522, motor 523, mating joint 524, rotating sleeve 525, telescopic rod 526, spring 527;

[0040] 60, circuit breaker control module 60, fourth cable 61;

[0041] Test system module 70;

[0042] Operating mechanism 80, limit switch device 81, pressure measuring interface 82, coil 83, pressure relief valve 84, energy storage motor 85, and travel rod 86;

[0043] Auxiliary node secondary signal test module 90, sixth cable 91. Detailed Implementation

[0044] Example 1:

[0045] See Figure 1-5 As shown, an automatic testing device for the overhaul performance of an operating mechanism includes:

[0046] The stroke simulation display module 10 is electrically connected to the limit switch device 81 on the operating mechanism 80 via the first cable 11. The stroke simulation display module 10 is used to display the opening and closing status of each limit switch node on the limit switch device 81 when the disc spring stroke changes during the energy storage process.

[0047] The energy storage motor control module 20 is electrically connected to the energy storage motor 85 on the operating mechanism 80 via the second cable 21. The energy storage motor control module 20 is used to control the start and stop of the energy storage motor 85.

[0048] The stroke node measurement module 30 is electrically connected to the displacement sensor 33 via a third cable 31. The displacement sensor 33 is mounted on the operating mechanism 80 via a bracket 32, and the measuring rod of the displacement sensor 33 abuts against the stroke rod 86 of the operating mechanism 80. The stroke node measurement module 30 is used to measure the displacement of the stroke rod 86. The displacement sensor 33 is preferably a DC output spring-loaded LVDT displacement sensor.

[0049] The hydraulic pressure measurement module 40 is used to measure the elastic potential energy of the disc spring of the operating mechanism 80, wherein the elastic potential energy stored in the disc spring by compression is reflected by measuring the hydraulic pressure of the high-pressure cylinder inside the operating mechanism 80.

[0050] Pressure relief valve control module 50, which is used to control the opening and closing of pressure relief valve 84 on operating mechanism 80;

[0051] The opening and closing control module 60 is electrically connected to the coil 83 of the solenoid valve of the operating mechanism 80 via a fourth cable 61. The opening and closing control module 60 is used to control the flow passage of the solenoid valve of the operating mechanism 80. The solenoid valve of the operating mechanism 80 includes one closing solenoid valve and two opening solenoid valves. By controlling the coil of the solenoid valve, the hydraulic flow passage is controlled.

[0052] The test system module 70 is used to control the coordinated operation of the stroke simulation display module 10, the energy storage motor control module 20, the stroke node measurement module 30, the oil pressure measurement module 40, the pressure relief valve control module 50, and the opening and closing control module 60, and to display the test results.

[0053] Through the coordinated operation of the aforementioned modules, automated performance testing of the overhauled operating mechanism 80 is achieved. By replacing manual measurement with mechanical automation, and by collecting and processing equipment information through sensors, the data is transmitted to the testing system module for storage and display. This reduces measurement time and improves test accuracy. Measurement time is reduced to 20% of the previous time, and measurement accuracy is significantly improved, thus increasing the efficiency of operating mechanism performance testing. This is of great significance for ensuring the stable operation of the power grid.

[0054] The operating mechanism 80 is equipped with a limit switch device 81, which has eight limit switches. Each limit switch has two switch terminals, as shown in the table below. When the operating mechanism 80 is in operation, it is necessary to ensure that the positions and on / off logic of the eight limit switches are correct in order to ensure the normal operation of the operating mechanism 80.

[0055]

[0056] The travel simulation display module 10 uses a display screen or indicator lights to show the opening and closing status of each travel switch node on the travel switch device 81, facilitating the judgment of the node logic of the operating mechanism. Specifically, when the operating mechanism stores energy, travel switch nodes 01-02, 21-22, 13-14, 03-04, 23-24, 43-44, 41-42, and 71-72 gradually begin to move with the compression of the disc spring, sequentially passing through travel nodes such as tripping interlock, tripping alarm, closing interlock, closing alarm, tripping-closing interlock, tripping-closing alarm, starting pressure, and stopping pressure, and sequentially displaying the opening and closing status of each corresponding node. When the node status logic of the eight groups of nodes is abnormal, or the travel node logic is incorrect, the travel simulation display module 10 will display the incorrect travel node, and the entire test data will be synchronously transmitted to the test system module 70 and converted into a table for easy recording.

[0057] The energy storage motor control module 20 also includes a time display module, which uses a display screen. The time display module is used to display the start time of the energy storage motor 85, that is, to display the time from the start of the energy storage motor to the stop pressurization; it also includes motor start and motor stop buttons in manual mode.

[0058] In one of the designs, the oil pressure measurement module 40 uses a pressure sensor, which is mounted on the pressure measurement interface 82 on the operating mechanism 80 and is electrically connected to the test system module 70.

[0059] In another embodiment, the oil pressure measurement module 40 uses an electric contact pressure gauge, which is connected to the pressure measurement interface 82 via a pipeline and is electrically connected to the test system module 70.

[0060] See Figure 5 The pressure relief valve control module 50 includes an actuator 52, which includes a motor 523. The output shaft of the motor 523 is connected to one end of a rotating sleeve 525. A telescopic rod 526 is mounted on the other end of the rotating sleeve 525 via a spline joint. A mating joint 524 is mounted on the end of the telescopic rod 526 outside the rotating sleeve 525. The mating joint 524 is adapted to the pressure relief valve 84. A spring 527 is installed between the rotating sleeve 525 and the telescopic rod 526. The motor 523 is electrically connected to the test system module 70 via a fifth cable 51. In use, the mating joint 524 is fitted onto the pressure relief valve 84. Rotation of the motor 523 drives the pressure relief valve 84 to rotate. Since the pressure relief valve is bolted, there is axial displacement when the valve rotates. Therefore, the rotating sleeve 525 and the telescopic rod 526 are connected via a spline joint, and a spring is also installed between them to accommodate the rotation of the pressure relief valve. In this embodiment, a spline sleeve is provided inside the rotating sleeve 525, and the circumferential wall of the telescopic rod 526 adopts a spline structure. The spline and the spline sleeve are connected in a mating manner, and the spring 527 is placed inside the spline sleeve. Preferably, the motor 523 is a stepper motor or a servo motor.

[0061] Furthermore, the motor 523 is mounted on the support plate 522, which is fixed to the clamp 521. The clamp 521 is used to connect and fix the motor 523 to the operating mechanism 80. This structure facilitates the installation and fixation of the motor 523.

[0062] It also includes an auxiliary node secondary signal test module 90, which is electrically connected to the 24-pin male auxiliary node on the operating mechanism 80 via the 24-pin female connector of the sixth cable 91. The auxiliary node secondary signal test module 90 is used to detect whether the secondary signals of the auxiliary nodes on the operating mechanism 80 are correct. The auxiliary node secondary signal test module 90 is controlled by the test system module 70. Through coordinated use with the pressure relief valve control module 50, the opening and closing control module 60, and the energy storage motor control module 20, detailed test data and results of the auxiliary node secondary signals are displayed separately under the test system module 70. The secondary signals include signals for monitoring, adjusting, controlling, and protecting the stroke nodes, oil pressure, motor energy storage, and opening and closing actions of the primary circuit of the operating mechanism.

[0063] The test system module 70 includes a controller and a display screen. The controller is used to coordinate the operation of the stroke simulation display module 10, the energy storage motor control module 20, the stroke node measurement module 30, the oil pressure measurement module 40, the pressure relief valve control module 50, and the opening and closing control module 60. The display screen is used to display the test results of the measured values.

[0064] Example 2:

[0065] A test method for the overhaul performance of an operating mechanism is provided for the performance testing of an operating mechanism 80. The method employs an automatic overhaul performance testing device for the operating mechanism and includes the following steps.

[0066] S1. Energy storage time measurement: The pressure relief valve 84 is closed by the pressure relief valve control module 50, and the energy storage motor 85 is started by the energy storage motor control module 20. When the energy storage motor 85 reaches the pressure stop node, it stops. The energy storage motor control module 20 records the energy storage running time of the energy storage motor 85 and transmits the data synchronously to the test system module 70 for recording. After that, the energy storage motor 85 continues to run. When the energy storage reaches the overpressure node, the disc spring energy storage reaches the maximum value, and the energy storage motor 85 stops running.

[0067] S2. Disc Spring Travel Node Measurement: When the energy storage motor 85 stops running, the travel simulation display module 10 determines whether the logic of the eight sets of travel switch nodes of the travel switch device 81 is correct. Then, the pressure relief valve is released by the pressure relief valve control module 50. When the travel of the travel rod 86 passes through the travel nodes of overpressure, stop pressure, start pressure, open / close alarm, open / close lockout, close / open alarm, close / open lockout, open alarm, and open lockout in sequence, the travel simulation display module 10 performs signal logic conversion on the position of the eight sets of travel switch nodes in sequence during the pressure relief process. At the same time, the travel node measurement module 30 reads the travel data of each node status and synchronously transmits the measured travel data of each node to the test system module 70 for recording.

[0068] S3, Disc Spring Hydraulic Pressure Measurement: The energy storage motor 85 is started again through the energy storage motor control module 20 to pressurize the operating mechanism to the fully charged state. Then, the pressure relief valve 84 is released through the pressure relief valve control module 50. When the stroke of the travel lever 86 passes through the five stroke nodes in sequence, namely overpressure, stop pressurization, open / close interlock, close / open interlock, and open interlock, the disc spring hydraulic pressure is read through the hydraulic pressure measurement module 40 and the measured hydraulic pressure data of each node is transmitted to the test system module 70 for recording.

[0069] S4. Auxiliary Node Secondary Signal Test: When the operating mechanism is in the closed energy storage state, the pressure relief valve 84 is opened through the pressure relief valve control module 50 to completely depressurize the operating mechanism, and then the pressure relief valve 84 is closed. The energy storage motor control module 20 controls the energy storage motor 85 to run. When the disc spring is compressed by about 1.2-3.5mm, the energy storage motor 85 stops. The opening and closing control module 60 controls one of the two opening coils 83 of the solenoid valve on the operating mechanism to actuate the opening solenoid valve, switching the oil circuit of the operating mechanism to the opening state. Then the energy storage motor 85 starts, and the operating mechanism begins to store energy. After the energy storage is completed, the energy storage motor 85 stops, and the operating mechanism is in the opening energy storage state. When the operating mechanism is in the opening energy storage state, the pressure relief valve control module 50 opens... Pressure relief valve 84 completely depressurizes the operating mechanism. Pressure relief valve control module 50 then closes pressure relief valve 84. Energy storage motor control module 20 starts energy storage motor 85. When the disc spring begins to compress, and after approximately 1.2-3.5mm of compression, energy storage motor 85 stops. The closing coil 83 of the solenoid valve on the operating mechanism is controlled by the opening / closing control module 60, causing the closing solenoid valve to actuate and switching the operating mechanism to the closing state. Energy storage motor 85 starts, and the operating mechanism begins energy storage. After energy storage is complete, energy storage motor 85 shuts off, and the operating mechanism is now in the closing energy storage state. This process is repeated. The auxiliary node control module controls one closing solenoid valve and two opening solenoid valves respectively to detect the operating mechanism's performance in slow opening / closing states. Throughout this dynamic process, the logic changes of the auxiliary node secondary signals are recorded, including changes in energy storage motor current and solenoid valve opening / closing status signals. This low-speed opening / closing dynamic process enables the testing and recording of the logic of the entire secondary signals.

[0070] S5. Pressure Holding Status Measurement: Under the slow opening and slow closing operation conditions of the operating mechanism in the auxiliary node secondary signal test, the operating mechanism is first adjusted to the closing energy storage state. After standing for 24 hours, the eight sets of travel nodes in the travel switch device 81 are checked through the travel simulation display module 10 to check whether the starting pressure node is conductive. Then, the displacement change of the travel rod 86 before and after pressure holding is measured through the travel node measurement module 30. When the starting pressure node is not conductive, that is, the data on the travel meter drops by less than 2mm after 24 hours, the pressure holding test of the operating mechanism in the closing energy storage state is qualified. Then, the operating mechanism is switched to the opening energy storage state for pressure holding test. When both the closing energy storage state and the opening energy storage state are qualified, the operating mechanism is qualified for pressure holding.

[0071] In application, the above steps S1-S5 can be performed fully automatically or manually in steps.

[0072] The test results displayed by module 70 of the test system are shown in the table below:

[0073]

[0074] The pressurization time of the energy storage motor in the table is completed in S1.

[0075] The stroke nodes for overpressure valve, stop pressurization, start pressurization, open / close alarm, open / close interlock, close / open alarm, close / open interlock, open alarm, open alarm, open 1 interlock, and open 2 interlock in the table are completed in S2.

[0076] The stroke nodes for overpressure valve, stop pressurization, open / close interlock, close / open interlock, open 1 interlock, and open 2 interlock in the table are completed in S3.

[0077] The slow separation and slow combination action test / auxiliary module secondary signal test in the table are completed in S4.

[0078] The 24-hour pressure test for the closed position and the 24-hour pressure test for the open position in the table are completed in S5.

[0079] During the reassembly process of the operating mechanism 80, all measured data are first standardized. The testing system module 70 then records and compares the actual measured data, indicating the qualified and unqualified items. Electronic data recording improves the accuracy of the test and avoids human measurement errors, which is conducive to the intelligent management of the operating mechanism test data.

Claims

1. A method for testing the performance of an actuator during major repair, for testing the performance of an actuator (80), characterized in that The test method comprises the following steps: S1, energy storage time measurement: the pressure relief valve control module (50) controls the pressure relief valve (84) to close, the energy storage motor control module (20) controls the energy storage motor (85) to start, and stops when the energy storage motor (85) reaches the pressure stopping node, the energy storage motor control module (20) records the energy storage running time of the energy storage motor (85), and synchronously transmits the data to the test system module (70) for recording; then, the energy storage motor (85) continues to run, and when the energy storage reaches the overpressure node, the disc spring energy storage reaches the maximum value, and the energy storage motor (85) stops running; S2, disc spring stroke node measurement: when the energy storage motor (85) stops running, whether the eight groups of stroke switch nodes of the stroke switch device (81) are logically correct is judged through the stroke simulation display module (10), then the pressure relief valve control module (50) loosens the pressure relief valve, when the stroke of the stroke pull rod (86) passes through the overpressure, stopping pressure, starting pressure, split and split brake alarm, split and split brake locking, combined and split brake alarm, combined and split brake locking, split brake alarm, and split brake locking stroke nodes in turn, the stroke simulation display module (10) carries out signal logic conversion on the positions of the eight groups of stroke switch nodes in the pressure relief process, and simultaneously, the stroke node measurement module (30) reads the stroke data of each node state, and synchronously transmits the measured node stroke data to the test system module (70) for recording; S3, disc spring oil pressure measurement: the energy storage motor control module (20) is started again to start the energy storage motor (85), and the operating mechanism is pressed to the energy storage state, then the pressure relief valve control module (50) loosens the pressure relief valve (84), when the stroke of the stroke pull rod (86) passes through the overpressure, stopping pressure, split and split brake locking, combined and split brake locking, and split brake locking five stroke nodes in turn, the oil pressure measurement module (40) reads the disc spring oil pressure, and synchronously transmits the measured node oil pressure data to the test system module (70) for recording; S4, secondary signal test of auxiliary node: when the operating mechanism is in the closing energy storage state, the pressure relief valve (84) is opened through the pressure relief valve control module (50) to completely depressurize the operating mechanism, and then the pressure relief valve (84) is closed, the energy storage motor (85) is controlled to operate by the energy storage motor control module (20), when the disc spring is compressed by a small distance, the energy storage motor (85) stops, one of the two opening coils (83) of the electromagnetic valve of the operating mechanism is controlled by the opening and closing control module (60), so that the opening electromagnetic valve acts, and the oil circuit of the operating mechanism is switched to the opening state, then the energy storage motor (85) is started, the operating mechanism starts to store energy, and after the energy storage is completed, the energy storage motor (85) stops, at this time the operating mechanism is in the opening energy storage state; when the operating mechanism is in the opening energy storage state, the pressure relief valve (84) is opened through the pressure relief valve control module (50) to completely depressurize the operating mechanism, and then the pressure relief valve (84) is closed through the pressure relief valve control module (50), the energy storage motor (85) is controlled to start by the energy storage motor control module (20), when the disc spring starts to compress, when the disc spring is compressed by a small distance, the energy storage motor (85) stops, the closing coil (83) of the electromagnetic valve of the operating mechanism is controlled by the opening and closing control module (60), so that the closing electromagnetic valve acts, and the operating mechanism is switched to the closing state, the energy storage motor (85) is started, the operating mechanism starts to store energy, and after the energy storage is completed, the energy storage motor (85) is closed, at this time the operating mechanism is in the closing energy storage state, repeat the above operation, control one closing electromagnetic valve and two opening electromagnetic valves through the auxiliary node control module to detect the operating performance of the operating mechanism in the slow opening and slow closing state; S5, pressure maintaining state measurement: through the slow opening and slow closing operation conditions of the operating mechanism in the secondary signal test of the auxiliary node, the operating mechanism is first adjusted to the closing energy storage state, and after standing for 24h, the eight groups of travel nodes in the travel switch device (81) are checked through the travel simulation display module (10), whether the starting pressure node is turned on is detected, and then the displacement change of the travel pull rod (86) before and after pressure maintaining is measured through the travel node measurement module (30), when the starting pressure node is not turned on, that is, the amount of decrease of the data on the travel table after 24h is less than 2mm, the operating mechanism is qualified in the closing energy storage state pressure maintaining test; then the operating mechanism is switched to the opening energy storage state for pressure maintaining test, and when the closing energy storage state and the opening energy storage state are both qualified, the operating mechanism is qualified in pressure maintaining.

2. An automatic testing device for testing the overhauling performance of an operating mechanism according to the method of testing the overhauling performance of an operating mechanism according to claim 1, characterized in that, Comprise: a travel simulation display module (10), the travel simulation display module (10) is electrically connected with the travel switch device (81) on the operating mechanism (80) through the first cable (11), and the travel simulation display module (10) is used for displaying the opening and closing state of each travel switch node on the travel switch device (81) when the disc spring travel changes in the energy storage process; an energy storage motor control module (20), the energy storage motor control module (20) is electrically connected with the energy storage motor (85) on the operating mechanism (80) through the second cable (21), and the energy storage motor control module (20) is used for controlling the start and stop of the energy storage motor (85). The stroke node measurement module (30) is electrically connected with the displacement sensor (33) through a third cable (31), the displacement sensor (33) is installed on the operating mechanism (80) through a support (32), and a measuring rod of the displacement sensor (33) abuts against a stroke pull rod (86) of the operating mechanism (80); the stroke node measurement module (30) is used for measuring displacement of the stroke pull rod (86); The oil pressure measurement module (40) is used for measuring the elastic potential energy of the disc spring of the operating mechanism (80), wherein the elastic potential energy stored by compression of the disc spring is reflected by measuring the oil pressure of the high-pressure cylinder inside the operating mechanism (80); The pressure relief valve control module (50) is used for controlling opening and closing of the pressure relief valve (84) on the operating mechanism (80); The opening and closing control module (60) is electrically connected with a coil (83) of the electromagnetic valve of the operating mechanism (80) through a fourth cable (61), and is used for controlling a flow passage of the electromagnetic valve of the operating mechanism (80); The test system module (70) is used for controlling the stroke simulation display module (10), the energy storage motor control module (20), the stroke node measurement module (30), the oil pressure measurement module (40), the pressure relief valve control module (50) and the opening and closing control module (60) to operate coordinately, and displaying a test result.

3. The automatic test device for overhauling the operating mechanism according to claim 2, wherein The stroke simulation display module (10) displays, by using a display screen or an indicator lamp, opening and closing states of each stroke switch node on the stroke switch device (81) in a process and a termination state from starting to complete the energy storage process of the operating mechanism.

4. The automatic test device for overhauling the operating mechanism according to claim 2, wherein The energy storage motor control module (20) further comprises a time display module, which is used for displaying time from starting to stopping pressing of the energy storage motor (85).

5. The automatic test device for overhauling the operating mechanism according to claim 2, wherein The oil pressure measurement module (40) adopts a pressure sensor, the pressure sensor is installed on a pressure measuring interface (82) on the operating mechanism (80), the pressure sensor is electrically connected with the test system module (70), or the oil pressure measurement module (40) adopts an electric contact pressure gauge, the electric contact pressure gauge is connected with the pressure measuring interface (82) in a pipeline mode, and the electric contact pressure gauge is electrically connected with the test system module (70).

6. The automatic test device for overhauling performance of an operating mechanism according to claim 2, wherein The pressure relief valve control module (50) comprises an actuating mechanism (52), the actuating mechanism (52) comprises a motor (523), an output shaft of the motor (523) is connected with one end of a rotating sleeve (525), the other end of the rotating sleeve (525) is provided with an extension rod (526) through a spline pair, one end of the extension rod (526) located outside the rotating sleeve (525) is provided with a matching connector (524), the matching connector (524) is matched with the pressure relief valve (84), a spring (527) is arranged between the rotating sleeve (525) and the extension rod (526), and the motor (523) is electrically connected with the test system module (70) through a fifth cable (51).

7. The automatic test device for overhauling the performance of an operating mechanism according to claim 6, wherein The motor (523) is installed on a support plate (522), the support plate (522) is fixed on a hoop (521), and the hoop (521) is used for being connected and fixed with the operating mechanism (80).

8. The automatic test device for overhauling performance of an operating mechanism according to claim 2, wherein The test system module (70) comprises a controller and a display screen, the controller is used for controlling the coordinated operation of the stroke simulation display module (10), the energy storage motor control module (20), the stroke node measurement module (30), the oil pressure measurement module (40), the pressure relief valve control module (50) and the opening and closing control module (60), and the display screen is used for displaying test results.

9. The automatic test device for overhauling the operating mechanism according to claim 2, characterized in that, The auxiliary node secondary signal test module (90) is electrically connected with the auxiliary node on the operating mechanism (80) through the sixth cable (91), and the auxiliary node secondary signal test module (90) is used for detecting whether the secondary signal of the auxiliary node on the operating mechanism (80) is correct; the auxiliary node secondary signal test module (90) is controlled by the test system module (70).

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