Testing device for electrical actuators

Abstract

This application provides a testing device for electrical actuators, belonging to the field of electrical testing technology. The testing device includes a testing platform and a circuit control assembly. The testing platform has an air supply port. The circuit control assembly includes a closing operation component, a opening operation component, a closing display component, an opening display component, and an electrical control component mounted on the testing platform. The closing operation component, the opening operation component, and the electrical actuator are all electrically connected to the electrical control component. The electrical control component is configured such that when the closing operation component is triggered, it controls the electrical actuator to connect to the air supply port, so that the gas from the air source drives the electrical actuator to close the closing auxiliary contact of the device under test; when the opening operation component is triggered, it controls the electrical actuator to disconnect from the air supply port, so that the electrical actuator closes the opening auxiliary contact of the device under test. The closing display component displays the closing status, and the opening display component displays the opening status. The testing device for electrical actuators of this application facilitates testing and improves testing efficiency and accuracy.

Description

Technical Field

[0001] This application relates to the field of electrical detection technology, and particularly to a detection device for an electrical actuator. Background Art

[0002] The high-voltage cabinet on a moving train is an electrical device installed on the EMU train and is used to manage and control the high-voltage power system. Components such as a vacuum main circuit breaker and a high-voltage disconnector are provided inside the high-voltage cabinet. To ensure the performance of the components, it is necessary to detect whether the action logic of the electrical actuator in the components is correct.

[0003] Taking the electrical actuator on the vacuum main circuit breaker as an example, it mainly includes a solenoid valve, a switching valve, a cylinder, an actuator slidably disposed at one end inside the cylinder, and a spring for driving the actuator to return to its original position. When detecting the electrical actuator of the vacuum main circuit breaker, under a closing instruction, by controlling the power-on of the solenoid valve, the gas in the air source flows into the cylinder and drives the actuator to move to the closing position. At this time, if the two main contacts in the vacuum main circuit breaker are electrically connected, it indicates that the closing action logic is qualified. Under a tripping instruction, by controlling the power-off of the solenoid valve to stop supplying gas to the cylinder, the spring drives the actuator to return to the tripping position and disconnects the two main contacts, indicating that the tripping action logic is qualified.

[0004] Currently, the detection of electrical actuators is mainly carried out by manual wiring, which has problems of low detection efficiency and low detection accuracy. Utility Model Content

[0005] This application provides a detection mechanism for an electrical actuator to solve the problems of low detection efficiency and low accuracy in manual detection.

[0006] This application provides a detection device for an electrical actuator, including:

[0007] A detection table, on which a gas supply port is provided. The gas supply port is used to connect the air source and the electrical actuator of the待测件 to supply gas from the air source to the electrical actuator;

[0008] A circuit control component, which includes a closing operation part, a tripping operation part, a closing display part, a tripping display part, and an electrical control part provided on the detection table. The closing operation part, the tripping operation part, and the electrical actuator are all electrically connected to the electrical control part;

[0009] The electrical control is configured to, when the closing operation is triggered, control the electrical actuator to connect with the gas supply port, so that the gas from the gas source drives the electrical actuator to close the closing auxiliary contact of the device under test; and when the opening operation is triggered, control the electrical actuator to disconnect from the gas supply port, so that the electrical actuator closes the opening auxiliary contact of the device under test.

[0010] The closing display component is electrically connected to the closing auxiliary contact and is used to display the closing status of the closing auxiliary contact; the opening display component is electrically connected to the opening auxiliary contact and is used to display the opening status of the opening auxiliary contact.

[0011] As an optional implementation, the electrical control system includes a closing relay and a opening relay;

[0012] The closing relay is used to electrically connect with the solenoid valve of the electrical actuator and the closing operation element respectively. The closing relay is configured to control the solenoid valve to connect with the air supply port when the closing operation element is triggered. The actuator in the electrical actuator is electrically connected with two main contacts in the device under test so as to close the closing auxiliary contact electrically connected to the main contacts.

[0013] The trip relay is used to electrically connect to the trip operation element and the solenoid valve respectively. The trip relay is configured to control the solenoid valve to disconnect from the air supply port when the trip operation element is triggered, and the actuator to disconnect the two main contacts so that the trip auxiliary contacts electrically connected to the main contacts are closed.

[0014] As an optional implementation, a voltage regulating component is also included, the voltage regulating component comprising:

[0015] A pressure detection element is connected to the air supply port and is used to detect the air pressure at the air supply port.

[0016] A booster pump is used to connect to the gas source, and the booster pump is configured to boost the gas flowing out of the gas source when the gas pressure at the gas supply port is less than the detection pressure of the test piece;

[0017] A buffer cylinder is connected between the booster pump and the air supply port, and the buffer cylinder is used to buffer the gas pressurized by the booster pump.

[0018] As an optional implementation, the voltage regulating component further includes:

[0019] A pressure regulating component is connected between the booster pump and the buffer cylinder, and the pressure regulating component is used to adjust the air pressure flowing to the buffer cylinder after boosting;

[0020] A pressure regulating actuator is disposed on the detection platform and electrically connected to the pressure regulating component. The pressure regulating actuator is configured to be triggered when the pressure at the gas supply port is less than or greater than the detection pressure, and to control the pressure regulating component to adjust the pressure of the gas flowing to the gas supply port to the detection pressure.

[0021] As an optional implementation, the pressure regulating component includes an electronic proportional valve.

[0022] As an optional implementation, an airtightness detection component is also included, the airtightness detection component comprising:

[0023] A control valve is provided between the buffer cylinder and the air supply port to enable the connection or disconnection between the two.

[0024] A timer is mounted on the detection platform;

[0025] A pressure-holding actuator is disposed on the detection platform and electrically connected to the control valve and the timer. The pressure-holding actuator is configured to be triggered during air tightness detection to close the control valve and start the timer, and to obtain the pressure change during the timing process through the pressure detection device to detect the air tightness between the air supply port and the electrical actuator.

[0026] As an optional implementation, the testing platform is provided with a power output port, which is used to electrically connect the power supply and the electrical actuator, so that the power supply supplies power to the electrical actuator;

[0027] It also includes a voltage regulation component, the voltage regulation component comprising:

[0028] A voltage detection device, which is electrically connected to the power output port, is used to detect the voltage at the power output port;

[0029] A voltage regulator is provided for electrical connection with the power supply. The voltage regulator is configured to adjust the voltage input to the power supply output port to the detection voltage when the voltage at the power supply output port is less than the detection voltage of the device under test.

[0030] As an optional implementation, the voltage regulation assembly further includes a voltage operating element;

[0031] The voltage operating element is disposed on the detection stage and electrically connected to the voltage regulating element. The voltage operating element is configured to be triggered when the voltage at the power output port is less than or greater than the detection voltage, and to regulate the voltage at the power output port through the voltage regulating element.

[0032] As an optional implementation, the testing stage is provided with a first resistance detection element and / or a second resistance detection element;

[0033] The first resistance detection element is electrically connected to the device under test and is used to detect the insulation resistance of the device under test;

[0034] The second resistance detection element is electrically connected to the two main contacts of the device under test, and the two main contacts are respectively electrically connected to the closing auxiliary contact and the opening auxiliary contact. The second resistance detection element is used to detect the contact resistance between the two main contacts.

[0035] As an optional implementation, the testing platform is provided with a lifting part; and / or, the bottom of the testing platform is provided with casters.

[0036] The electrical actuator provided in this application, by setting an air supply port on the testing platform, facilitates the supply of air to the actuator. When the closing and opening operating components are triggered, the electrical control unit can control the connection and disconnection between the actuator and the air supply port. This ensures that after the closing auxiliary contact closes, the closing status is displayed on the closing indicator; and after the opening auxiliary contact closes, the opening status is displayed on the opening indicator. Therefore, when testing the electrical actuator, only the corresponding operating component needs to be triggered, replacing the manual wiring step, simplifying the operation process, and thus improving testing efficiency. Furthermore, by setting up closing and opening indicators, testing personnel can intuitively observe the test results without needing to interpret complex test data, reducing the skill requirements for testing personnel and further improving testing accuracy and convenience.

[0037] Furthermore, isolating the testing personnel from the test piece through the testing station and circuit control components helps reduce the risk of electric shock to the testing personnel, thereby improving the safety of the testing device. Attached Figure Description

[0038] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0039] Figure 1 This is a schematic diagram of the structure of the detection device for the electrical actuator provided in the embodiments of this application;

[0040] Figure 2 for Figure 1 Schematic diagram of the voltage regulation component;

[0041] Figure 3 This is a partial structural diagram of a vacuum main circuit breaker;

[0042] Figure 4 for Figure 1 A schematic diagram showing the connection relationship between the circuit control component and the device under test;

[0043] Figure 5 for Figure 1 Schematic diagram showing the connection relationship between the medium pressure regulating component and the gas source and gas supply port;

[0044] Figure 6 for Figure 1 A schematic diagram showing the connection relationship between the medium voltage regulation component and the power supply, power input port, and power output port.

[0045] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments.

[0046] Explanation of reference numerals in the attached figures

[0047] 100. Testing platform; 101. Air supply port; 102. Power input port; 103. Power output port; 104. Operating surface; 105. Boss; 106. Connecting port; 107. First resistance detection element; 108. Second resistance detection element; 109. Input voltage display; 110. Pressure display; 111. Voltage display; 112. Lifting unit; 113. Casters; 114. Air source control element; 115. Air supply control element; 116. Circuit breaker tripping button; 117. Circuit breaker tripping indicator light;

[0048] 200. Component under test; 201. Electrical actuator; 2011. Solenoid valve; 2012. Switching valve; 2013. Pressure regulating valve; 2014. Cylinder; 2015. Actuator; 2016. Spring; 2017. Main contact; 2018. Closing auxiliary contact; 2019. Opening auxiliary contact; 2020. Air storage cylinder;

[0049] 300. Circuit control components; 301. Closing operation component; 302. Opening operation component; 303. Closing display component; 304. Opening display component; 305. Electrical control components; 3051. Closing relay; 3052. Opening relay;

[0050] 400. Pressure regulating assembly; 401. Pressure detection element; 402. Booster pump; 403. Buffer cylinder; 404. Pressure regulating component; 405. Pressure regulating operating element; 406. Second control valve; 407. Third control valve;

[0051] 500. Air tightness detection component; 501. First control valve; 502. Timer; 503. Pressure holding operation component;

[0052] 600. Voltage regulating assembly; 601. Voltage regulating component; 602. Voltage operating component; 603. Voltage detection component.

[0053] 700. Gas source;

[0054] 800, power supply. Detailed Implementation

[0055] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments of this application will be described in more detail below with reference to the accompanying drawings. In the drawings, the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The described embodiments are some, but not all, embodiments of this application. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application. The embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0056] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, an indirect connection through an intermediate medium, or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0057] In the description of this application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0058] The terms "first," "second," "third," "fourth," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented, for example, in a sequence other than those illustrated or described herein.

[0059] Furthermore, the terms “comprising” and “having”, and any variations thereof, are intended to cover non-exclusive inclusion, such that a process, method, system, product, or apparatus that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or apparatus.

[0060] When performing functional tests on components in the high-voltage switchgear of a high-speed train, such as vacuum main circuit breakers and high-voltage disconnect switches, it is necessary to check whether the operating logic of the electrical actuators is correct. Specifically, under a closing command, if the actuator in the electrical actuator is driven by the incoming gas to the closed position, it indicates that the closing operating logic of the electrical actuator is correct. Under a opening command, if the gas supply to the electrical actuator stops, and the actuator is driven by the elastic element to return to the opening position, it indicates that the opening operating logic of the electrical actuator is correct.

[0061] In the existing technology, electrical actuators are usually tested by manual wiring, which has the problem of low testing efficiency. Moreover, manual wiring is prone to low testing accuracy due to different operation of the testers.

[0062] Based on the above description, one or more embodiments of this application provide a detection device for an electrical actuator to improve the detection efficiency and accuracy of the electrical actuator 201. The following description is in conjunction with the accompanying drawings.

[0063] like Figure 1 and Figure 2 As shown in the illustration, the electrical actuator testing device provided in this embodiment includes a testing platform 100 and a circuit control assembly 300. The testing platform 100 has an air supply port 101, which connects an air source 700 to the electrical actuator 201 of the device under test 200, allowing the air source 700 to supply air to the electrical actuator 201. The circuit control assembly 300 includes a closing operation component 301, a opening operation component 302, a closing display component 303, an opening display component 304, and an electrical control component 305, all mounted on the testing platform 100. The closing operation component 301, the opening operation component 302, and the electrical actuator 201 are all electrically connected to the electrical control component 305.

[0064] The electrical control unit 305 is configured to, when the closing operation unit 301 is triggered, control the electrical actuator 201 to connect with the air supply port 101 so that the gas from the air source 700 drives the electrical actuator 201 to close the closing auxiliary contact 2018 of the device under test 200; and to, when the opening operation unit 302 is triggered, control the electrical actuator 201 to disconnect from the air supply port 101 so that the electrical actuator 201 closes the opening auxiliary contact 2019 of the device under test 200.

[0065] The closing display component 303 is electrically connected to the closing auxiliary contact 2018 and is used to display the closing status of the closing auxiliary contact 2018; the opening display component 304 is electrically connected to the opening auxiliary contact 2019 and is used to display the opening status of the opening auxiliary contact 2019.

[0066] The electrical actuator detection device in this embodiment of the application provides an air supply port 101 on the detection platform 100, facilitating the supply of air from the air source 700 to the electrical actuator 201. When the closing operation component 301 and the opening operation component 302 are triggered, the control component 305 can control the connection and disconnection between the electrical actuator 201 and the air supply port 101. This ensures that after the closing auxiliary contact 2018 closes, the closing status is displayed on the closing display component 303, and after the opening auxiliary contact 2019 closes, the opening status is displayed on the opening display component 304. This allows for testing of the electrical actuator 201 by simply triggering the corresponding operation component, replacing the manual wiring step, simplifying the operation process, and thus improving testing efficiency.

[0067] Furthermore, by setting up the closing display component 303 and the opening display component 304, the testing personnel can intuitively observe the test results without having to interpret complex test data. This reduces the skill requirements for testing personnel and further improves testing accuracy and convenience. In addition, by isolating the testing personnel from the device under test 200 through the testing platform 100 and the circuit control component 300, the risk of electric shock to the testing personnel is reduced, thereby improving the safety of the testing device.

[0068] In this embodiment, the test piece 200 has two spaced main contacts. When performing the closing action logic test, if the actuator 2015 in the electrical actuator 201 is driven by the gas to move to the closing position when air is supplied to the electrical actuator 201, and electrically connects the two main contacts 2017 in the test piece 200 together, then the closing action logic is qualified. At the same time, the electrical connection of the two main contacts 2017 makes the circuit containing the closing auxiliary contact 2018 and the closing display piece 303 conductive, so that the closing status can be displayed through the closing display piece 303.

[0069] During the tripping operation logic test, the air source 700 stops supplying air to the electrical actuator 201. If the actuator 2015 in the electrical actuator 201 can be driven back to the tripping position by the spring 2016 and other return structures, causing the two main contacts 2017 to open, it indicates that the tripping operation logic is qualified. Simultaneously, the opening of the two main contacts 2017 makes the circuit between the tripping auxiliary contact 2019 and the tripping display 304 conductive, thus allowing the tripping status to be displayed on the tripping display 304. Clearly, when one of the closing auxiliary contact 2018 or the tripping auxiliary contact 2019 is conductive with the circuit of its corresponding display, the other of the two is disconnected from the circuit of its corresponding display.

[0070] It should be noted that, in the embodiments of this application, the test component 200 can be, for example, a vacuum main circuit breaker and a high-voltage disconnecting switch. The vacuum main circuit breaker is an important electrical component within the high-voltage cabinet. It is the main switch for electrical connection and disconnection between the entire vehicle and the overhead contact line, and a critical protection device on the locomotive. When various faults occur in the locomotive, it can quickly, reliably, and safely cut off the main power supply 800 of the locomotive, thereby protecting the locomotive equipment.

[0071] High-voltage disconnect switches are protective devices. When a locomotive is in operation or in multiple-unit formation, all high-voltage disconnect switches on the locomotive are closed, connecting the high-voltage line on the locomotive roof. This allows the pantograph and main circuit breaker at one end of the locomotive to control the current supply to the locomotive or the multiple-unit locomotive. If a fault occurs in the high-voltage section on the roof of a locomotive at one end, the faulty locomotive can be disconnected by opening the high-voltage disconnect switch on the faulty side, thus maintaining operation of the faulty locomotive.

[0072] In the following embodiments, the structure of the testing device is described using a vacuum main circuit breaker as an example of the device under test 200. Of course, the device under test 200 in this embodiment can also be other components in the high-voltage switchgear, or other components that require testing. For example, the device under test 200 can also be an electrical contactor or a relay, as long as the electrical actuator 201 of the device under test 200 requires the solenoid valve 2011 to control the gas supply, and the actuator 2015 can move between the closed and open positions.

[0073] Some exemplary structures of vacuum main circuit breakers are as follows: Figure 3 As shown, the electrical actuator 201 includes a solenoid valve 2011, a switching valve 2012, a cylinder 2014, an actuator 2015 with one end slidably disposed in the cylinder 2014, and a spring 2016 for driving the actuator 2015 back to its original position, all connected in sequence. The vacuum main circuit breaker includes a pressure regulating valve 2013 connected to the air supply port 101, and an air storage cylinder 2020 located between the pressure regulating valve 2013 and the solenoid valve 2011. The outlet of the solenoid valve 2011 is connected to the inlet of the switching valve 2012, and the outlet of the switching valve 2012 is connected to the cylinder 2014.

[0074] like Figure 4 As shown in the embodiment of this application, the electrical control 305 includes a closing relay 3051 and a opening relay 3052. The closing relay 3051 is electrically connected to the solenoid valve 2011 and the closing operation element 301 of the electrical actuator 201. The closing relay 3051 is configured to, when the closing operation element 301 is triggered, control the solenoid valve 2011 to connect with the air supply port 101, and electrically connect the actuator 2015 in the electrical actuator 201 to the two main contacts 2017 in the device under test 200, so that the closing auxiliary contact 2018 electrically connected to the main contacts 2017 closes.

[0075] The trip relay 3052 is electrically connected to the tripping operation element 302 and the solenoid valve 2011 respectively. The trip relay 3052 is configured to, when the tripping operation element 302 is triggered, control the solenoid valve 2011 to disconnect from the air supply port 101, and the actuator 2015 to disconnect the two main contacts 2017 so that the tripping auxiliary contact 2019 electrically connected to the main contacts 2017 is closed.

[0076] The separate installation of closing relay 3051 and opening relay 3052 facilitates the separate detection of the closing and opening operation logic of the electrical actuator 201. The closing relay 3051 and opening relay 3052 also enable rapid response to commands from the corresponding operating components. Compared to manually operating the solenoid valve 2011, this not only shortens the detection time and improves detection efficiency but also enhances detection safety.

[0077] When the detection device performs a closing test on the vacuum main circuit breaker, after triggering the closing operation component 301, the closing relay 3051 controls the solenoid valve 2011 to be energized, so that the air supply port 101 is connected to the air inlet of the solenoid valve 2011. The gas in the air source 700 flows sequentially through the pressure regulating valve 2013 and the air storage cylinder 2020 before flowing into the solenoid valve 2011, and then through the solenoid valve 2011 and the switching valve 2012 into the air cylinder 2014, which drives the actuator 2015 to move outward to the closing position, so that the two main contacts 2017 are electrically connected. At this time, the closing auxiliary contact 2018 closes, and the closing display component 303 displays the closing status.

[0078] When the detection device performs a tripping test on the vacuum main circuit breaker, after triggering the tripping operation component 302, the tripping relay 3052 de-energizes the solenoid valve 2011, thereby disconnecting the air supply port 101 from the air inlet of the solenoid valve 2011. The spring 2016 drives the actuator 2015 to move into the cylinder 2014 to the tripping position, causing the two main contacts 2017 to open. At this time, the tripping auxiliary contact 2019 closes, and the tripping display component 304 displays the tripping status.

[0079] In specific implementations, the closing operation component 301 and the opening operation component 302 in this embodiment can both adopt easily triggered structures such as buttons or knobs mounted on the detection platform 100. Buttons and knobs have the advantages of simple structure, easy layout and implementation, and convenient operation. The closing display component 303 and the opening display component 304 in this embodiment can both adopt products with display effects such as indicator lights or displays that display text information.

[0080] In a preferred embodiment, the closing actuator 301 and the closing display 303 are marked with the same color, as are the opening actuator 302 and the opening display 304. For example, the closing actuator 301 is marked with red, and the closing display 303 displays red. The opening actuator 302 is marked with green, and the opening display 304 displays green. When an actuator of a certain color is operated, the corresponding display illuminates, indicating that the corresponding action logic is successful. Of course, the corresponding actuators and displays can also have different color markings, as long as they meet the requirements for easy differentiation and use.

[0081] As a preferred implementation method, such as Figure 2 and Figure 5 As shown in the illustration, the detection device in this embodiment further includes a pressure regulating component 400, which includes a pressure detection element 401, a booster pump 402, and a buffer cylinder 403. The pressure detection element 401 is connected to the air supply port 101 and is used to detect the air pressure at the air supply port 101. The booster pump 402 is connected to the air source 700 and is configured to boost the gas flowing from the air source 700 when the air pressure at the air supply port 101 is lower than the detection pressure of the device under test 200. The buffer cylinder 403 is connected between the booster pump 402 and the air supply port 101 and is used to buffer the gas boosted by the booster pump 402.

[0082] Thus, by detecting the air pressure at the air supply port 101 through the pressure detection element 401, and boosting the gas in the air source 700 by the booster pump 402 when the air pressure at the air supply port 101 is lower than the detection pressure, it helps to ensure that the air pressure at the air supply port 101 meets the usage requirements of the device under test 200, thereby improving the detection accuracy. Furthermore, the buffer cylinder 403 buffers the boosted gas, which helps to improve the stability of the gas flowing out of the air supply port 101 and further improves the air supply effect to the electrical actuator 201.

[0083] In specific implementation, the pressure detection element 401 can be a pressure sensor, which can be set at the air supply port 101 or between the air supply port 101 and the buffer cylinder 403. Considering that the pressure in the buffer cylinder 403 is the same as the air pressure at the air supply port 101, the pressure detection element 401 can also be set in the buffer cylinder 403.

[0084] To facilitate the testing and use of pressure information acquired by pressure detection element 401, such as Figure 1 As shown, a pressure display 110 is also provided on the testing platform 100. The pressure display 110 is electrically connected to the pressure detection element 401 to display the pressure detected by the pressure detection element 401 in real time, thereby facilitating the testing personnel to obtain the actual pressure after pressurization. The buffer cylinder 403 has a buffer chamber, which reduces the flow rate of gas in the buffer chamber by increasing the cross-sectional area, thereby achieving a buffering effect. This makes the gas pressure more stable before flowing into the gas supply port 101, thereby improving the stability of the gas flowing to the solenoid valve 2011 and thus improving the testing accuracy.

[0085] In a preferred embodiment, the pressure regulating assembly 400 further includes a pressure regulating element 404 and a pressure regulating operating element 405. The pressure regulating element 404 is connected between the booster pump 402 and the buffer cylinder 403, and is used to regulate the pressure of the gas flowing to the buffer cylinder 403 after boosting. The pressure regulating operating element 405 is disposed on the detection stage 100 and electrically connected to the pressure regulating element 404. The pressure regulating operating element 405 is configured to be triggered when the pressure at the air supply port 101 is less than or greater than the detection pressure, and to control the pressure regulating element 404 to regulate the pressure of the gas flowing to the air supply port 101 to the detection pressure.

[0086] This configuration allows the gas pressure flowing to the air supply port 101 to be increased by the booster pump 402, and then further adjusted by the pressure regulator 404. This enables the gas pressure at the air supply port 101 to be adjusted to different detection pressures when testing different test pieces 200, thus providing good versatility and flexibility, and also improving detection accuracy. The initial pressure adjustment by the booster pump 402 combined with the fine-tuning by the pressure regulator 404 further improves the efficiency of pressure regulation at the air supply port 101.

[0087] In practical implementation, the pressure regulating component 404 includes an electronic proportional valve, which has advantages such as high adjustment accuracy, high pressure stability, and strong anti-interference capability. The pressure regulating operating component 405 may include a pressure regulating knob set on the test bench 100, which can increase or decrease the pressure of the air supply port 101 by changing the direction of rotation. For ease of operation, the test bench 100 can also be provided with indicators for increasing and decreasing the pressure. Testing shows that the pressure regulating component 400 can adjust the test pressure of the air supply port 101 to 0-900 kPa during use, thus meeting the testing requirements of various test items 200. Of course, the adjusted air pressure range can also be increased or decreased as needed.

[0088] To further improve the performance of the testing device, the device also includes an airtightness testing component 500, which includes a control valve, a timer 502, and a pressure holding operation component 503. The control valve is located between the buffer cylinder 403 and the air supply port 101 to control the connection between them; the timer 502 is located on the testing platform 100.

[0089] The pressure holding operation 503 is located on the test bench 100 and is electrically connected to the control valve and the timer 502. The pressure holding operation 503 is set to be triggered during air tightness testing to close the control valve and start the timer 502. The pressure change during the timing process is obtained through the pressure detection element 401, thereby detecting the air tightness between the air supply port 101 and the electrical actuator 201.

[0090] This configuration, through the coordinated operation of the control valve, timer 502, and pressure detection element 401, facilitates automated airtightness testing of the pneumatic system of the electrical actuator 201, thus solving the problems of low efficiency, poor accuracy, and easy omissions in traditional manual testing. For ease of distinction from the control valve described below, the control valve located between the buffer cylinder 403 and the air supply port 101 will be referred to as the first control valve 501.

[0091] Specifically, the timer 502 can be a product from the existing technology, and the pressure-holding operation component 503 includes a button or knob. During airtightness testing, triggering the pressure-holding operation component 503 closes the first control valve 501, at which point the timer 502 starts timing, and the tester can read the initial pressure value on the pressure display 110. After the timing ends, the tester can read the final pressure value on the pressure display 110. Finally, the pressure change value within the timing period is obtained by subtracting the initial pressure value from the final pressure value, thus assessing whether the airtightness is acceptable. The timing time can be set according to the usage requirements of different test components 200.

[0092] As one feasible implementation method, the air source 700 can be an external air source 700 or an internal air source 700 installed on the testing platform 100. When the air source 700 is an external air source 700, the testing platform 100 is provided with a connection port 106 that communicates with the external air source 700, and the booster pump 402 is specifically connected to the air source 700 through the connection port 106.

[0093] A second control valve 406 is provided between the connection port 106 and the booster pump 402 to control the on / off connection between the two. A third control valve 407 is provided between the pressure regulating component 404 and the buffer cylinder 403 to control the on / off connection between the two. A gas source operating component 114 and a gas supply operating component 115 are provided on the testing platform 100. The gas source operating component 114 is electrically connected to the second control valve 406, the third control valve 407, and the booster pump 402 to control the flow of gas from the gas source 700 into the pressure regulating component 400. The gas supply operating component 115 is electrically connected to the first control valve 501 to control the flow of pressure-regulated gas into the gas supply port 101. Alternatively, a pressure holding operating component 503 can be electrically connected to the second control valve 406, and when the pressure holding operating component 503 is operated, the second control valve 406 is also closed.

[0094] When using the pressure regulating component 400 for pressure regulation, the gas source operating component 114 is first triggered, controlling the second control valve 406, the booster pump 402, and the third control valve 407 to open. At this time, the pressure displayed on the pressure display 110 is compared with the detection pressure, and the pressure adjustment operating component 405 is operated, causing the pressure regulating component 404 to adjust the pressure in the buffer cylinder 403 to the detection pressure. Next, the gas supply operating component 115 is triggered, at which point the first control valve 501 opens, and the gas in the buffer cylinder 403 that has reached the detection pressure flows through the gas supply port 101 to the solenoid valve 2011 of the device under test 200, thereby causing the electrical actuator 201 to perform detection at the corresponding detection pressure.

[0095] As an optional implementation method, such as Figure 1 , Figure 2 and Figure 6 As shown, the testing station 100 is provided with a power output port 103, which is used to electrically connect the power supply 800 and the electrical actuator 201, so that the power supply 800 supplies power to the electrical actuator 201. It also includes a voltage regulation assembly 600, which includes a voltage detection element 603 and a voltage regulator 601. The voltage detection element 603 is electrically connected to the power output port 103 and is used to detect the voltage at the power output port 103; the voltage regulator 601 is electrically connected to the power supply 800 and is configured to adjust the voltage input to the power output port 103 to the detection voltage when the voltage at the power output port 103 is less than or greater than the detection voltage of the device under test 200.

[0096] As set up above, the output voltage of the power output port 103 can be adjusted to the detection voltage through the cooperation of the voltage detection component 603 and the voltage regulator 601, which helps to improve the voltage regulation accuracy and efficiency, thereby improving the detection accuracy of the device under test 200.

[0097] In practice, the voltage detection element 603 can be a product with voltage detection function, such as a voltage sensor, which is already in the technology. To facilitate the acquisition of voltage values ​​by the testing personnel, a voltage display 111 can also be set on the testing table 100 to display the voltage value detected by the voltage detection element 603 in real time, and to serve as a reference for the testing personnel to adjust the voltage.

[0098] The testing station 100 is equipped with a power input port 102 connected to the power supply 800, such as... Figure 1 and Figure 6 As shown, a voltage regulator 601 is disposed between the power input port 102 and the power output port 103, and is electrically connected to both the power input port 102 and the power output port 103. The voltage regulator 601 can be a product with voltage regulation found in the prior art; for example, the voltage regulator 601 can be a 0-150V adjustable DC regulated power supply 800, thus meeting the testing needs of the device under test 200 under different detection voltages. Furthermore, the voltage regulator 601 can also convert the 220V AC power input from the power supply 800 into DC power. Additionally, an input voltage display 109 electrically connected to the power input port 102 is provided on the testing station 100 to facilitate the testing personnel in obtaining the voltage value of the input power supply 800.

[0099] In a preferred embodiment, the voltage regulation assembly 600 further includes a voltage operating element 602. The voltage operating element 602 is disposed on the testing stage 100 and electrically connected to the voltage regulation assembly 601. The voltage operating element 602 is configured to be triggered when the voltage at the power output port 103 is less than or greater than the detection voltage, and to adjust the voltage at the power output port 103 via the voltage regulation assembly 601. This configuration facilitates the testing personnel in controlling the voltage regulation assembly 601 to adjust the voltage at the power output port 103 to the detection voltage.

[0100] In practice, the voltage operating component 602 can be an adjustment knob located on the testing platform 100, which adjusts the voltage by changing the direction of rotation. For example, rotating the voltage operating component 602 clockwise increases the voltage, while rotating it counterclockwise decreases the voltage. Alternatively, the testing platform 100 can be equipped with indicators for increasing and decreasing the voltage.

[0101] like Figure 1 and Figure 2As shown in the embodiment of this application, the testing station 100 is provided with a first resistance detection element 107 and a second resistance detection element 108. The first resistance detection element 107 is electrically connected to the device under test 200 and is used to detect the insulation resistance of the device under test 200. The second resistance detection element 108 is electrically connected to the two main contacts 2017 of the device under test 200, and the two main contacts 2017 are respectively electrically connected to the closing auxiliary contact 2018 and the opening auxiliary contact 2019. The second resistance detection element 108 is used to detect the contact resistance between the two main contacts 2017.

[0102] By setting up a first resistance detection element 107 and a second resistance detection element 108, it is beneficial to detect the insulation resistance of the component under test 200 and the contact resistance between the main contact 2017, and to detect in advance whether there is a risk of leakage current or contact defects in the component under test 200, thereby improving the detection accuracy. It should be noted that in specific implementation, it is also feasible to set only one of the first resistance detection element 107 and the second resistance detection element 108.

[0103] like Figure 1 and Figure 2 As shown, the testing platform 100 serves as the mounting base for the entire testing device. It is cabinet-shaped, and to facilitate operation by testing personnel, an inclined operating surface 104 is provided on the top of the testing platform 100. All the aforementioned operating components and displays are mounted on the operating surface 104. Additionally, a protruding boss 105 protruding to one side can be provided on the testing platform 100. The upper surface of the boss 105 is horizontally positioned to facilitate the placement of items by testing personnel.

[0104] As an optional implementation, the testing table 100 is provided with a lifting section 112 to facilitate the lifting of the testing table 100 by lifting equipment and thus moving the testing device. Figure 1 As shown, the lifting unit 112 may include a lifting ring located on top of the testing platform 100. Its structure is simple and easy to arrange. Of course, the number and position of the lifting rings can be adjusted according to usage requirements, and are not limited to the two shown in the figure.

[0105] In addition, the bottom of the testing platform 100 is equipped with casters 113 to facilitate the movement of the testing device, thereby improving ease of use. In practice, the number and position of the casters 113 can be adjusted according to requirements. It is understandable that it is also feasible to have only one of the hoisting unit 112 and the casters 113.

[0106] As an optional implementation method, such as Figure 1 and Figure 2As shown, the testing device also includes a grounding switch testing component, which includes a tripping operation button 116 mounted on the testing platform 100 and a tripping indicator light 117 electrically connected to the tripping operation button 116. By setting up the grounding switch testing component, it is convenient to test the grounding switches in the high-voltage switchgear, thereby improving the performance of the testing device.

[0107] Rotating the handle of the grounding switch will activate the transmission mechanism within the grounding switch, which consists of a turntable, connecting rod, rotating sleeve, and rotating shaft. This will cause the rotating arm to rotate, ultimately connecting and disconnecting the grounding clamp from the grounding contact of the vacuum circuit breaker.

[0108] The trip indicator light 117 is electrically connected to the trip auxiliary contact of the grounding switch. When it is necessary to test the tripping operation logic of the grounding switch in the high-voltage cabinet, press the tripping operation button 116 and manually switch the grounding switch to the tripping state. If the trip indicator light 117 lights up at this time, it indicates that the tripping operation logic of the grounding switch is qualified.

[0109] Understandably, in practical implementation, the grounding switch detection assembly can use not only the tripping operation button 116 as the operating element, but also a knob or other easily operable structure. Furthermore, the display element for showing the test results can use not only the tripping indicator light 117, but also other products with display functions such as a display screen or monitor.

[0110] To facilitate the identification of the tripping operation button 116 and the tripping indicator light 117 used for testing the grounding switch, the word "Grounding Off" can be set on one side of the tripping operation button 116 and the word "Grounding Off" can be set on one side of the tripping indicator light 117.

[0111] To further improve the effectiveness of the testing device, the testing device includes multiple circuit control components 300, enabling the separate testing of the electrical actuators 201 of multiple test objects 200. For example... Figure 1 and Figure 2 As shown, there are three circuit control components 300 to facilitate the separate testing of the electrical actuators 201 of one vacuum main circuit breaker and two high-voltage disconnect switches in the high-voltage cabinet.

[0112] To facilitate differentiation between the various display and operating components, distinguishing labels can be installed on the testing platform 100. For example, the closing operating component 301 and the closing display component 303 for testing the vacuum main circuit breaker are respectively labeled with the text "Main Circuit Breaker Closed", and the opening operating component 302 and the opening display component 304 are respectively labeled with the text "Main Circuit Breaker Opened".

[0113] The closing operation unit 301 and closing display unit 303 used for testing one high-voltage disconnect switch are respectively marked with the text "High-voltage disconnect 1 closed", and the opening operation unit 302 and opening display unit 304 are respectively marked with the text "High-voltage disconnect 1 open". The closing operation unit 301 and closing display unit 303 used for testing another high-voltage disconnect switch are respectively marked with the text "High-voltage disconnect 2 closed", and the opening operation unit 302 and opening display unit 304 are respectively marked with the text "High-voltage disconnect 2 open".

[0114] An exemplary assembly and usage process of the electrical actuator detection device in this application embodiment when detecting the vacuum main circuit breaker in the high-voltage switchgear is as follows:

[0115] First, connect the connection port 106 to the air source 700, and connect the air supply port 101 to the air supply pipe inside the high-voltage cabinet. The air supply pipe can be connected to the solenoid valves 2011 of the three test pieces 200 through three branch pipes respectively. Then, connect the power input port 102 to the external power supply 800, and connect the power output port 103 to the corresponding test piece 200. The power supply 800 input to the test bench 100 supplies power to the electrical components on the test bench 100.

[0116] Then, the gas source operating component 114 is activated, controlling the second control valve 406, the booster pump 402, and the third control valve 407 to open. The gas supply operating component is activated, opening the first control valve 501. Gas from the gas source 700 flows into the booster pump 402 and is pressurized. The pressure display 110 shows the gas pressure at the gas supply port 101 in real time. The testing personnel compare the pressure displayed on the pressure display 110 with the test pressure. When the actual test pressure is less than or greater than the test pressure, they operate the pressure regulating component and adjust the pressure at the gas supply port 101 to the required test pressure using the pressure regulating component 404.

[0117] Next, the testing personnel compare the voltage displayed on the voltage display 111 with the detection voltage. When the actual detected voltage is less than or greater than the detection voltage, the voltage regulator 601 is operated to adjust the voltage of the power output port 103 to the required detection voltage.

[0118] When testing the closing action of the electrical actuator 201 in the vacuum main circuit breaker, such as Figure 1 and Figure 3As shown, when the closing operation unit 301 corresponding to the vacuum main circuit breaker is operated, the closing relay 3051 controls the solenoid valve 2011 to be energized. The air inlet of the solenoid valve 2011 opens, and the gas flowing out of the air supply port 101 flows into the cylinder 2014 through the pressure regulating valve 2013, the air storage cylinder 2020, the solenoid valve 2011, and the switching valve 2012. This drives the actuator 2015 to move out of the cylinder 2014 to the closing position, and causes the two main contacts 2017 in the vacuum main circuit breaker to be electrically connected through the actuator 2015. The closing auxiliary contact 2018 closes, and the circuit containing the closing auxiliary contact 2018 and the closing display unit 303 is connected. The closing display unit 303 displays the closing status. For example, when the closing display unit 303 is an indicator light, if the indicator light is on, the closing operation logic is qualified; if the indicator light is off, it means that the closing operation logic is unqualified.

[0119] When testing the tripping action of the electrical actuator 201 in the vacuum main circuit breaker, such as Figure 1 and Figure 3 As shown, the tripping operation unit 302 corresponding to the vacuum main circuit breaker is operated. At this time, the tripping relay 3052 de-energizes the solenoid valve 2011, the air inlet of the solenoid valve 2011 closes, and the gas stops flowing into the solenoid valve 2011. The spring 2016 drives the actuator 2015 to move into the cylinder 2014 to the tripping position, and causes the gas in the cylinder 2014 to flow into the switching valve 2012, and then flow to the outside through the switching valve 2012. The two main contacts 2017 in the vacuum main circuit breaker open, and the tripping auxiliary contact 2019 closes. The circuit containing the tripping auxiliary contact 2019 and the tripping display unit 304 is connected, and the tripping display unit 304 displays the tripping status. For example, when the tripping display unit 304 is an indicator light, if the indicator light is on, the tripping operation logic is qualified; if the indicator light is off, it means that the tripping operation logic is unqualified.

[0120] When performing an airtightness test on the electrical actuator 201 of the vacuum main circuit breaker, the pressure-holding operating component 503 is operated, and the first control valve 501 and the second control valve 406 are closed. At this time, by recording the pressure value displayed on the pressure display 110 during the timing process, the pressure change during the timing process can be obtained, thereby determining the leakage amount of the electrical actuator 201. The detected leakage amount is compared with the standard leakage amount; if it does not exceed the standard leakage amount, it indicates that the airtightness of the electrical actuator 201 is qualified.

[0121] The testing process for the other two high-voltage disconnect switches is roughly the same as that for the vacuum main circuit breaker, and will not be described in detail here.

[0122] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this application are indicated by the following claims.

[0123] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. An electric actuator detection device, characterized by comprising: include: A testing platform (100) is provided with an air supply port (101), which is used to connect an air source (700) and an electrical actuator (201) of the test piece (200) so that the air source (700) supplies air to the electrical actuator (201); A circuit control assembly (300) includes a closing operation component (301), a opening operation component (302), a closing display component (303), an opening display component (304), and an electrical control component (305) disposed on the detection platform (100). The closing operation component (301), the opening operation component (302), and the electrical actuator (201) are all electrically connected to the electrical control component (305). The electrical control unit (305) is configured to, when the closing operation unit (301) is triggered, control the electrical actuator (201) to connect with the air supply port (101), so that the gas from the air source (700) drives the electrical actuator (201) to close the closing auxiliary contact (2018) of the device under test (200); and when the opening operation unit (302) is triggered, control the electrical actuator (201) to disconnect from the air supply port (101), so that the electrical actuator (201) closes the opening auxiliary contact (2019) of the device under test (200). The closing display (303) is electrically connected to the closing auxiliary contact (2018) and is used to display the closing status of the closing auxiliary contact (2018); the opening display (304) is electrically connected to the opening auxiliary contact (2019) and is used to display the opening status of the opening auxiliary contact (2019).

2. The detection device of an electric actuator according to claim 1, characterized in that The electrical control unit (305) includes a closing relay (3051) and a opening relay (3052); The closing relay (3051) is used to electrically connect with the solenoid valve (2011) of the electrical actuator (201) and the closing operation element (301). The closing relay (3051) is configured to control the solenoid valve (2011) to connect with the air supply port (101) when the closing operation element (301) is triggered. The actuator (2015) in the electrical actuator (201) is electrically connected with the two main contacts (2017) in the test device (200) so that the closing auxiliary contact (2018) electrically connected to the main contacts (2017) is closed. The trip relay (3052) is used to electrically connect with the trip operation element (302) and the solenoid valve (2011) respectively. The trip relay (3052) is configured to control the solenoid valve (2011) to disconnect from the air supply port (101) when the trip operation element (302) is triggered, and the actuator (2015) disconnects the two main contacts (2017) so that the trip auxiliary contact (2019) electrically connected to the main contacts (2017) closes.

3. The detection device of an electric actuator according to claim 1, characterized by It also includes a voltage regulating component (400), the voltage regulating component (400) comprising: A pressure detection element (401) is connected to the air supply port (101) and is used to detect the air pressure at the air supply port (101). A booster pump (402) is used to connect to the gas source (700). The booster pump (402) is configured to boost the gas flowing out of the gas source (700) when the gas pressure at the gas supply port (101) is less than the detection pressure of the test piece (200). A buffer cylinder (403) is connected between the booster pump (402) and the air supply port (101). The buffer cylinder (403) is used to buffer the gas after it is boosted by the booster pump (402).

4. The detection device of an electric actuator according to claim 3, characterized in that The voltage regulating assembly (400) also includes: A pressure regulating component (404) is connected between the booster pump (402) and the buffer cylinder (403). The pressure regulating component (404) is used to regulate the air pressure flowing to the buffer cylinder (403) after boosting. A pressure regulating actuator (405) is disposed on the detection stage (100) and electrically connected to the pressure regulating component (404). The pressure regulating actuator (405) is configured to be triggered when the pressure at the gas supply port (101) is less than or greater than the detection pressure, and to control the pressure regulating component (404) to regulate the pressure of the gas flowing to the gas supply port (101) to the detection pressure.

5. The detection device of an electric actuator according to claim 4, characterized in that The pressure regulating component (404) includes an electronic proportional valve.

6. The detection device of an electric actuator according to claim 3, wherein It also includes an airtightness detection component (500), which includes: A control valve is provided between the buffer cylinder (403) and the air supply port (101) to enable the connection and disconnection between the two. A timer (502) is provided on the detection station (100); A pressure holding operation (503) is provided on the test platform (100) and electrically connected to the control valve and the timer (502). The pressure holding operation (503) is configured to be triggered during air tightness testing to close the control valve and start the timer (502), and to obtain the pressure change during the timing process through the pressure detection device (401) to detect the air tightness between the air supply port (101) and the electrical actuator (201).

7. The detection device of an electric actuator according to any one of claims 1 to 6, characterized in that, The testing station (100) is provided with a power output port (103), which is used to electrically connect the power supply (800) and the electrical actuator (201) so that the power supply (800) supplies power to the electrical actuator (201); It also includes a voltage regulation component (600), the voltage regulation component (600) comprising: A voltage detection element (603) is electrically connected to the power output port (103) and is used to detect the voltage of the power output port (103); A voltage regulator (601) is used to be electrically connected to the power supply (800). The voltage regulator (601) is configured to adjust the voltage input to the power output port (103) to the detection voltage when the voltage at the power output port (103) is less than or greater than the detection voltage of the device under test (200).

8. The detection device for the electrical actuator according to claim 7, characterized in that, The voltage regulation assembly (600) further includes a voltage operating element (602); The voltage operating element (602) is disposed on the detection stage (100) and electrically connected to the voltage regulating element (601). The voltage operating element (602) is configured to be triggered when the voltage at the power output port (103) is less than or greater than the detection voltage, and to regulate the voltage at the power output port (103) through the voltage regulating element (601).

9. The detection device of an electric actuator according to any one of claims 1 to 6, characterized in that, The testing station (100) is provided with a first resistance testing element (107) and / or a second resistance testing element (108); The first resistance detection element (107) is electrically connected to the test piece (200) and is used to detect the insulation resistance of the test piece (200); The second resistance detection element (108) is electrically connected to the two main contacts (2017) of the device under test (200), and the two main contacts (2017) are electrically connected to the closing auxiliary contact (2018) and the opening auxiliary contact (2019) respectively. The second resistance detection element (108) is used to detect the contact resistance between the two main contacts (2017).

10. The detection device of an electric actuator according to any one of claims 1 to 6, characterized in that, The testing platform (100) is provided with a hoisting part (112); and / or, the bottom of the testing platform (100) is provided with casters (113).

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