A detection device for a disconnector mechanism box

Abstract

The application discloses a kind of detection devices of isolating switch mechanism box.The isolating switch mechanism box includes secondary circuit to be detected;The detection device includes: power supply port, AC output end, test connecting line and control circuit board;The secondary circuit to be detected and the AC output end are electrically connected by the test connecting line;The power supply port is used to provide input power for the detection device;The control circuit board is used to detect the function of the isolating switch mechanism box, wherein the function detection at least includes: loop detection.The detection device provided by the application can replace manual function detection, avoid personal safety risks and improve the efficiency of detection work.

Description

Technical Field

[0001] This invention relates to the field of disconnector switch technology, and more particularly to a testing device for a disconnector switch mechanism box. Background Technology

[0002] Disconnect switches are used extensively in power systems and are crucial equipment. As a vital component of the disconnect switch, the disconnect switch mechanism box is susceptible to malfunctions or inadequate acceptance testing. Faults within the mechanism box can directly lead to the disconnect switch failing to operate after installation, significantly impacting installation efficiency and operational reliability.

[0003] However, during factory acceptance and handover testing, the circuits inside the disconnector switch mechanism box often cannot be powered on and functionally tested. Moreover, disconnector switch mechanism boxes are not immediately put into production after leaving the factory; most are stored in warehouses as spare parts. Therefore, it is necessary to inspect them before putting them into production to prevent malfunctions caused by prolonged storage.

[0004] The current acceptance status of disconnector switch mechanism boxes: A large number of disconnector switch mechanism boxes are manually inspected using multimeters. This method is extremely inefficient and poses a risk of electric shock. Alternatively, the mechanism box is directly powered on to check if it functions properly. However, this method cannot determine whether there are short circuits or open circuits in the mechanism box circuit before powering it on. Summary of the Invention

[0005] To address the problems in the prior art, this invention provides a testing device for disconnector switch mechanism boxes, which can replace manual functional testing, avoid personal safety risks, and improve the efficiency of testing work.

[0006] This invention provides a testing device for a disconnector switch mechanism box, the disconnector switch mechanism box including a secondary circuit to be tested;

[0007] The detection device includes: a power port, an AC output terminal, a test connection cable, and a control circuit board;

[0008] The secondary circuit to be tested and the AC output terminal are electrically connected through the test connection line;

[0009] The power port is used to provide input power to the detection device;

[0010] The control circuit board is used to perform functional testing on the disconnector switch mechanism box, wherein the functional testing includes at least: loop detection.

[0011] Optionally, the disconnector mechanism box may further include the transmission mechanism;

[0012] The detection device also includes: a photoelectric encoder and a retractable stall clamp;

[0013] The control circuit board is used to perform functional testing on the disconnector switch mechanism box, wherein the functional testing further includes: overcurrent and phase loss protection testing, mechanism jamming testing, and mechanism rotation angle testing;

[0014] The photoelectric encoder is used to detect the rotation angle and speed of the transmission mechanism;

[0015] The retractable stall clamp is used to clamp the transmission mechanism of the frame box, and works with the control circuit board to realize overcurrent protection detection of the isolating switch mechanism box.

[0016] Optionally, the detection device further includes: a control button;

[0017] The control buttons include a start button, a pause button, and a stop button, used to control the start and stop of the detection device.

[0018] Optionally, the control circuit board includes: a loop detection module and its switch, an overcurrent and phase loss protection detection module and its switch, a mechanism jamming detection module and its switch, a mechanism rotation angle detection module and its switch, and a switch logic control module;

[0019] The control circuit board is electrically connected to the power port and the AC output terminal.

[0020] The switch logic control module is used to control the on / off state of each detection module switch.

[0021] Optionally, when the detection device performs functional testing, the switch logic control module can only close one detection module switch at a time to perform testing on one detection module.

[0022] Optionally, the loop detection module starts working when the switch logic control module closes the switch of the loop detection module;

[0023] The circuit detection module is used to detect whether there is a short circuit or an open circuit in the secondary circuit to be detected.

[0024] Optionally, when the switch logic control module closes the switch of the overcurrent and phase loss protection detection module, the overcurrent and phase loss protection detection module starts to work;

[0025] The overcurrent and phase loss protection detection module is used to detect whether the overcurrent protection and phase loss protection of the disconnect switch mechanism box are normal.

[0026] Before the overcurrent and phase loss protection detection module detects whether the overcurrent protection of the disconnector mechanism box is normal, the retractable stall clamp first clamps the transmission mechanism of the disconnector mechanism box.

[0027] Optionally, when the switch logic control module closes the switch of the mechanism jamming detection module, the mechanism jamming detection module starts to work;

[0028] The mechanism jamming detection module is used to determine whether the disconnector switch mechanism box is jammed based on the rotation speed and angle of the transmission mechanism and the current in the secondary circuit to be tested.

[0029] Optionally, when the switch logic control module closes the switch of the mechanism rotation angle detection module, the mechanism rotation angle detection module starts to work;

[0030] The mechanism rotation angle detection module is used to determine whether the disconnector switch mechanism box meets the rotation degree requirement based on the rotation angle of the transmission mechanism.

[0031] Optionally, after all testing modules have completed their tests, the switch logic control module disconnects all testing module switches and outputs a final test report, which includes the test results of each module and a final acceptance conclusion.

[0032] The technical solution of this invention realizes automatic detection of the function of the disconnector switch mechanism box through the control circuit board in the detection device. It solves the problems of low efficiency and risk of electric shock in the existing manual detection of disconnector switch mechanism boxes using multimeters. It has the beneficial effects of avoiding personal safety risks and improving the efficiency of detection work.

[0033] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0035] Figure 1 This is a schematic diagram of the structure of a detection device for a disconnector mechanism box provided in an embodiment of the present invention;

[0036] Figure 2This is a front view of a disconnector mechanism box provided in an embodiment of the present invention;

[0037] Figure 3 This is a rear view of a disconnector mechanism box provided in an embodiment of the present invention;

[0038] Figure 4 This is a side view of a disconnector mechanism box provided in an embodiment of the present invention;

[0039] Figure 5 A circuit diagram of a secondary circuit to be tested provided in an embodiment of the present invention;

[0040] Figure 6 This is a schematic diagram of the control circuit board provided in an embodiment of the present invention;

[0041] Figure 7 A circuit diagram of the control circuit of the detection device provided in an embodiment of the present invention;

[0042] Figure 8 A circuit diagram of the AC power output circuit of the detection device provided in an embodiment of the present invention;

[0043] Figure 9 A circuit diagram of the auxiliary power supply circuit for the detection device provided in the embodiments of the present invention;

[0044] Figure 10 A circuit diagram of the status indication circuit of the detection device provided in the embodiment of the present invention;

[0045] Figure 11 A circuit diagram of a 220V AC heating power supply current detection circuit for an AC power output circuit provided in an embodiment of the present invention;

[0046] Figure 12 A circuit diagram of a 220V AC control power supply current detection circuit for an AC power output circuit provided in an embodiment of the present invention;

[0047] Figure 13 A circuit diagram of a 380V AC power supply current detection circuit for an AC power output circuit provided in an embodiment of the present invention;

[0048] Figure 14 A circuit diagram of a 380V AC power supply voltage detection circuit for an AC power output circuit provided in an embodiment of the present invention;

[0049] Figure 15 A circuit diagram of a 380V AC power supply control relay for an AC power output circuit provided in an embodiment of the present invention;

[0050] Figure 16A circuit diagram of a leakage current detection circuit for an AC power output circuit provided in an embodiment of the present invention;

[0051] Figure 17 The circuit diagram of the 220V AC power supply control relay for the AC power output circuit provided in the embodiment of the present invention. Detailed Implementation

[0052] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0053] It should be noted that the terms "comprising" and "having" and any variations thereof in the specification, claims and accompanying drawings of this invention are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device 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 processes, methods, products or devices.

[0054] Example 1

[0055] Figure 1 This is a schematic diagram of a detection device for a disconnector mechanism box provided in an embodiment of the present invention. (Reference) Figure 1 This invention provides a testing device for a disconnector switch mechanism box 1, which includes a secondary circuit to be tested. Figure 1 (Not shown in the image) The detection device 2 includes: a power port 21, an AC output terminal 22, a test connection cable 23, and a control circuit board 24.

[0056] Specifically, the secondary circuit to be tested and the AC output terminal 22 are electrically connected through the test connection line 23. The power port 21 is used to provide input power to the testing device 2. The control circuit board 24 is used to perform functional testing on the disconnector mechanism box 1, wherein the functional testing includes at least: circuit testing.

[0057] For example, Figure 5 A circuit diagram of a secondary circuit to be tested is provided in an embodiment of the present invention, with reference to... Figure 1 and Figure 5The AC output terminal 22 includes a single-phase AC output terminal 221 and a three-phase AC output terminal 222. The single-phase AC output terminal 221 and the three-phase AC output terminal 222 are electrically connected to the power input port in the secondary circuit under test via a test connection line 23. (Refer to...) Figure 5 The power inputs in the secondary circuit to be tested are heating power AC 220V (L, N), control power AC 220V (L, N) and motor power AC 380V (L1, L2, L3).

[0058] Figure 2 This is a front view of a disconnector mechanism box provided in an embodiment of the present invention. Figure 3 This is a rear view of a disconnector mechanism box provided in an embodiment of the present invention. Figure 4 This is a side view of a disconnector mechanism box provided in an embodiment of the present invention, with reference to... Figures 2-4 The disconnector switch mechanism box 1 also includes a transmission mechanism 11. (Continue to refer to...) Figure 1 The detection device 2 also includes: photoelectric encoder 25 and retractable stall clamp 26.

[0059] Specifically, the control circuit board 24 is used to perform functional tests on the disconnector mechanism box 1, including overcurrent and phase loss protection detection, mechanism jamming detection, and mechanism rotation angle detection. The photoelectric encoder 25 is used to detect the rotation angle and speed of the transmission mechanism 11. The retractable stall clamp 26 is used to clamp the transmission mechanism 11 of the frame box, working in conjunction with the control circuit board 24 to achieve overcurrent protection detection of the disconnector mechanism box 1.

[0060] In addition, continue to refer to Figure 1 The detection device 2 also includes: a control button 27, wherein the control button 27 includes a start button, a pause button, and a stop button. Figure 1 (Not shown in the image), used to control the start and stop of the detection device 2.

[0061] Figure 6 This is a schematic diagram of the control circuit board provided in an embodiment of the present invention, with reference to... Figure 6 The control circuit board 24 includes: a loop detection module 241 and its switch K1, an overcurrent and phase loss protection detection module 242 and its switch K2, a mechanism jamming detection module 243 and its switch K3, a mechanism rotation angle detection module 244 and its switch K4, and a switch logic control module 245.

[0062] Further reference Figure 6 The control circuit board 24 is electrically connected to the power port 21 and the AC output terminal 22. The AC output terminal 22 includes a single-phase AC output terminal 221 and a three-phase AC output terminal 222.

[0063] The switch logic control module 245 in the control circuit board 24 is used to control the on / off state of each detection module switch.

[0064] Specifically, when the testing device 2 performs functional testing, the switch logic control module 245 can only close one testing module switch at a time to perform testing on one testing module.

[0065] For example, when the switch logic control module 245 closes the circuit detection module switch K1, the circuit detection module 241 starts to work. The circuit detection module 241 is used to detect whether there is a short circuit or open circuit in the secondary circuit to be tested in the isolating switch mechanism box 1.

[0066] Specifically, when the loop detection module 241 performs loop detection, it first outputs voltage to the secondary circuit to be tested in the disconnector mechanism box 1, and then detects the voltage and current of the secondary circuit to be tested through the voltage detection circuit and current detection circuit in the control circuit board 24. Finally, it determines whether there is a short circuit or open circuit in the secondary circuit to be tested based on the detected voltage and current of the secondary circuit to be tested, and outputs the detection result.

[0067] For example, when the switch logic control module 245 controls the closing of the overcurrent and phase loss protection detection module switch K2, the overcurrent and phase loss protection detection module 242 starts working. The overcurrent and phase loss protection detection module 242 is used to detect whether the overcurrent protection and phase loss protection of the disconnector switch mechanism box 1 are normal. Before the overcurrent and phase loss protection detection module detects whether the overcurrent protection of the disconnector switch mechanism box 1 is normal, the retractable stall clamp 26 first clamps the transmission mechanism 11 of the disconnector switch mechanism box 1.

[0068] Specifically, when the overcurrent and phase loss protection detection module 242 performs overcurrent protection detection, it first clamps the transmission mechanism 11 of the disconnector mechanism box 1 through the retractable stall clamp 26, and then outputs voltage to the secondary circuit under test in the disconnector mechanism box 1 through the overcurrent and phase loss protection detection module 242. At this time, the motor M of the secondary circuit under test in the disconnector mechanism box 1 stalls, and the current in the secondary circuit under test rises. When the overcurrent protection value of the disconnector mechanism box is reached, if the overcurrent protection of the disconnector mechanism box 1 does not operate, the overcurrent and phase loss protection detection module switch K2 is tripped after a first preset time delay, and the detection result of overcurrent protection not operating is output.

[0069] Optionally, the detection device 2 is also equipped with overcurrent protection, and its overcurrent protection value is adjustable. This avoids the situation where the overcurrent protection of the disconnector switch mechanism box 1 cannot be detected when it is not functioning properly. If the overcurrent protection of the disconnector switch mechanism box 1 is not functioning properly, the overcurrent protection of the detection device 2 can ensure that the disconnector switch mechanism box 1 will not be damaged by overcurrent during the detection process. That is, after a first preset delay, the overcurrent and phase loss protection detection module switch K2 will trip. The adjustable overcurrent protection value allows the detection device 2 to be set with appropriate overcurrent protection values ​​according to different disconnector switch mechanism boxes 1, thereby improving the applicability of the detection device 2.

[0070] It should be noted that the embodiments of the present invention do not limit the size of the first preset time. For example, the first preset time can be set to 0.5s or 1s. Those skilled in the art can set it according to their needs.

[0071] Specifically, when the overcurrent and phase loss protection detection module 242 performs phase loss protection detection, it first outputs the phase loss voltage to the secondary circuit to be tested in the disconnector mechanism box 1. If the phase loss protection of the disconnector mechanism box 1 does not operate, the overcurrent and phase loss protection detection module switch K2 is tripped after a second preset time delay, and the detection result of phase loss protection not operating is output.

[0072] It should be noted that the embodiments of the present invention do not limit the size of the second preset time. For example, the second preset time can be set to 0.5s or 1s. Those skilled in the art can set it according to their needs.

[0073] For example, when the switch logic control module 245 closes the switch K3 of the mechanism jamming detection module, the mechanism jamming detection module 243 starts to work. The mechanism jamming detection module 243 is used to determine whether there is jamming in the isolating switch mechanism box 1 based on the rotation speed and angle of the transmission mechanism 11 and the current in the secondary circuit to be detected.

[0074] Specifically, when the mechanism jamming detection module 243 performs mechanism jamming detection, it first outputs voltage to the secondary circuit to be tested in the disconnector mechanism box 1, causing the motor M in the secondary circuit to start rotating. Then, the photoelectric encoder 25 detects the rotation speed and angle of the transmission mechanism 11, and the current in the secondary circuit to be tested is detected through the current detection circuit. Finally, based on the detected rotation speed and angle of the transmission mechanism 11 and the current in the secondary circuit to be tested, it is determined whether there is jamming in the disconnector mechanism box 1.

[0075] The photoelectric encoder 25 is mounted on the transmission mechanism 11 of the disconnector switch mechanism box 1, and rotates with the rotation of the transmission mechanism 11. See details... Figure 1 The mechanism jamming detection module 243 obtains the rotational speed and angle of the transmission mechanism 11 based on the pulse signal from the photoelectric encoder 25.

[0076] It should be noted that the transmission mechanism 11 of the disconnector switch mechanism box 1 is connected to the motor M in the secondary circuit to be tested through a connection structure. If the motor M starts to rotate, the transmission mechanism 11 connected to it will also start to rotate. Similarly, if the transmission mechanism 11 stops rotating due to jamming or the application of external force, the motor M will also stop rotating, resulting in a stall situation, which in turn affects the current in the secondary circuit to be tested.

[0077] For example, when the switch logic control module 245 closes the switch K4 of the mechanism rotation angle detection module, the mechanism rotation angle detection module 244 starts to work. The mechanism rotation angle detection module 244 is used to determine whether the isolation switch mechanism box 1 meets the rotation degree requirement based on the rotation angle of the transmission mechanism 11.

[0078] Specifically, when the mechanism rotation angle detection module 244 detects the mechanism rotation angle, it first outputs voltage to the secondary circuit to be tested in the disconnector mechanism box 1, causing the motor M in the secondary circuit to start rotating. Then, the photoelectric encoder 25 detects the rotation angle of the transmission mechanism 11. Finally, after the limit switch of the disconnector mechanism box 1 is in position, it determines whether the disconnector mechanism box 1 meets the rotation degree requirement based on the detected rotation angle of the transmission mechanism 11.

[0079] After all testing modules have completed their tests, the switch logic control module 245 disconnects all testing module switches and outputs a final test report, which includes the test results of each module and a conclusion on whether the final acceptance test has passed.

[0080] Optionally, the detection device 2 in this embodiment of the invention further includes a display panel ( Figure 1 (Not shown in the image) This display panel can display the test results of each test module and the final acceptance conclusion. The display panel can also set the overcurrent protection value, the first preset time, and the second preset time of the test device 2.

[0081] In addition, after all testing modules have been tested, the test connection lines must be disconnected and the fixed mechanism box components removed in order to proceed with the testing of the next disconnector mechanism box.

[0082] Existing testing methods for disconnector switch mechanism boxes have limitations, including the inability to determine if the mechanical parts of the disconnector switch mechanism box are jammed or abnormal, whether the rotation angle of the disconnector switch mechanism box meets the requirements, and the inability to check the overcurrent protection and phase loss protection functions within the disconnector switch mechanism box. This invention addresses these issues by using a control circuit comprising a circuit detection module 241, an overcurrent and phase loss protection detection module 242, a mechanism jamming detection module 243, and a mechanism rotation angle detection module 244 to perform circuit detection, overcurrent and phase loss protection detection, mechanism jamming detection, and mechanism rotation angle detection on the disconnector switch mechanism box 1. This solves the aforementioned problems, ensures the completeness of the disconnector switch mechanism box testing, and improves the accuracy of the testing. Furthermore, this invention uses a testing device to replace manual labor, achieving automatic testing. It can also automatically output test results and data, and automatically determine whether the disconnector switch mechanism is qualified, greatly reducing the labor intensity and personal risk for workers and improving testing efficiency.

[0083] The technical solution of this invention realizes automatic detection of the function of the disconnector switch mechanism box through the control circuit board in the detection device. It solves the problems of low efficiency and risk of electric shock in the existing manual detection of disconnector switch mechanism boxes using multimeters. It has the beneficial effects of avoiding personal safety risks and improving the efficiency of detection work.

[0084] Example 2

[0085] Based on the above embodiments, this embodiment describes the structure of the detection device 2 and how to detect the disconnector switch mechanism box 1. (Continue to refer to...) Figure 1 The testing device 2 also includes: a fixed mechanism box component 28 and a lockable pulley 29. The fixed mechanism box component 28 is used to fix the disconnector mechanism box 1. The lockable pulley 29 is used to lock the pulley during the test to keep the automatic detection and verification device for the disconnector mechanism box function stable.

[0086] Before testing the fixed disconnector mechanism box 1, the fixed disconnector mechanism box 1 is fixed to the testing device 2 using the fixed mechanism box component 28. The testing device 2 is fixed in a position close to the external power source using the lockable pulley 29, so that the power port 21 of the testing device 2 can be electrically connected to the external power source. The single-phase AC output terminal 221 and the three-phase AC output terminal 222 of the testing device 2 are electrically connected to the power input port of the secondary circuit to be tested in the disconnector mechanism box 1 using the test connection cable 23.

[0087] In addition, before testing, the power port 21 must be electrically connected to an external power source, and the start button must be pressed. Then, the testing device 2 will start working. After the testing device 2 is powered on and starts working, in order to ensure the accuracy of subsequent testing, the response function of the disconnector mechanism box 1 also needs to be tested. First, different voltages and currents are output to the secondary circuit under test in the disconnector mechanism box 1 through the test connection line 23. Then, the voltage and current of the secondary circuit under test are detected by the voltage detection circuit and current detection circuit in the control circuit board 24. Finally, the response function of the disconnector mechanism box 1 is judged to be normal based on the detected voltage and current of the secondary circuit under test.

[0088] It should be noted that by testing the response function, the voltage range that ensures the normal operation of the disconnector switch mechanism box 1 can be determined, thus avoiding inaccurate test results due to excessively low input voltage to the disconnector switch mechanism box 1.

[0089] If the response function of the disconnector mechanism box 1 is normal, the function test of the disconnector mechanism box 1 will begin through the control circuit board 24 in the detection device 2.

[0090] Specifically, the switch logic control module 245 will sequentially connect the switches of each detection module, and then perform functional testing on the isolating switch mechanism box 1 through each detection module.

[0091] For example, the switch logic control module 245 first closes the switch K1 of the loop detection module 241, while the switches of other detection modules besides the loop detection module 241 are in the open state. The loop detection module 241 starts to perform loop detection. The loop detection module 241 first outputs voltage to the secondary circuit to be tested in the isolating switch mechanism box 1 through the test connection line 23, and then detects the voltage and current of the secondary circuit to be tested through the voltage detection circuit and current detection circuit in the control circuit board 24. Finally, based on the detected voltage and current of the secondary circuit to be tested, it determines whether there is a short circuit or open circuit in the secondary circuit to be tested, and outputs the detection result to the display panel for display.

[0092] After the loop detection module 241 completes the loop detection, the switch logic control module 245 disconnects the loop detection module switch K1 and closes the overcurrent and phase loss protection detection module 242 switch K2. The overcurrent and phase loss protection detection module 242 begins to perform overcurrent protection detection. The overcurrent and phase loss protection detection module 242 first clamps the transmission mechanism 11 of the disconnector switch mechanism box 1 through the retractable stall clamp 26, and then outputs voltage to the secondary circuit under test in the disconnector switch mechanism box 1 through the test connection line 23. At this time, the motor M in the secondary circuit under test in the disconnector switch mechanism box 1 stalls, and the current in the secondary circuit under test rises. When the current in the secondary circuit under test reaches the overcurrent protection value of the disconnector switch mechanism box, if the overcurrent protection of the disconnector switch mechanism box 1 does not operate, the current in the secondary circuit under test is still rising. The switch logic control module 245 then disconnects the overcurrent and phase loss protection detection module switch K2 after a first preset time delay and outputs the detection result of the overcurrent protection not operating to the display panel and displays it.

[0093] It should be noted that the embodiments of the present invention do not limit the size of the first preset time. For example, the first preset time can be set to 0.5s or 1s. Those skilled in the art can set it according to their needs. For example, those skilled in the art can set it through the display panel.

[0094] After completing the overcurrent protection detection, the overcurrent and phase loss protection detection module 242 starts the phase loss protection detection. The overcurrent and phase loss protection detection module 242 first outputs the phase loss voltage to the secondary circuit to be tested in the disconnector mechanism box 1 through the test connection line 23. If the phase loss protection of the disconnector mechanism box 1 does not activate, the switch logic control module 245 disconnects the overcurrent and phase loss protection detection module switch K2 after a second preset time delay, and outputs the detection result of the phase loss protection not activating to the display panel and displays it.

[0095] It should be noted that the embodiments of the present invention do not limit the size of the second preset time. For example, the second preset time can be set to 0.5s or 1s. Those skilled in the art can set it according to their needs. For example, those skilled in the art can set it through the display panel.

[0096] After the overcurrent and phase loss protection detection module 242 completes the overcurrent and phase loss protection detection, the switch logic control module 245 disconnects the overcurrent and phase loss protection detection module switch K2 and closes the mechanism jamming detection module 243 switch K3. The mechanism jamming detection module 243 then begins to perform mechanism jamming detection. The mechanism jamming detection module 243 first outputs voltage to the secondary circuit under test in the disconnecting switch mechanism box 1 through the test connection line 23, causing the motor M in the secondary circuit under test to start rotating. Then, the photoelectric encoder 25 detects the rotation speed and angle of the transmission mechanism 11, and the current in the secondary circuit under test is detected through the current detection circuit. Finally, based on the detected rotation speed and angle of the transmission mechanism 11 and the current in the secondary circuit under test, it is determined whether there is jamming in the disconnecting switch mechanism box 1.

[0097] The photoelectric encoder 25 is mounted on the transmission mechanism 11 of the disconnector switch mechanism box 1, and rotates with the rotation of the transmission mechanism 11. See details... Figure 1 The mechanism jamming detection module 243 obtains the rotational speed and angle of the transmission mechanism 11 based on the pulse signal from the photoelectric encoder 25.

[0098] It should be noted that the transmission mechanism 11 of the disconnector switch mechanism box 1 is connected to the motor M in the secondary circuit to be tested through a connection structure. If the motor M starts to rotate, the transmission mechanism 11 connected to it will also start to rotate. Similarly, if the transmission mechanism 11 stops rotating due to jamming or the application of external force, the motor M will also stop rotating, resulting in a stall situation, which in turn affects the current in the secondary circuit to be tested.

[0099] After the mechanism jamming detection module 243 completes the mechanism jamming detection, the switch logic control module 245 disconnects the mechanism jamming detection module switch K3 and closes the mechanism rotation angle detection module 244 switch K4. The mechanism rotation angle detection module 244 then begins to detect the mechanism rotation angle. The mechanism rotation angle detection module 244 first outputs voltage to the secondary circuit to be tested in the disconnecting switch mechanism box 1 through the test connection line 23, causing the motor M in the secondary circuit to start rotating. Then, the rotation angle of the transmission mechanism 11 is detected by the photoelectric encoder 25. After the limit switch of the disconnecting switch mechanism box 1 is in position, the transmission mechanism 11 of the disconnecting switch mechanism box 1 is judged according to the detected rotation angle to determine whether the transmission mechanism 11 of the disconnecting switch mechanism box 1 meets the rotation degree requirement.

[0100] After all testing modules have completed their tests, the switch logic control module 245 disconnects all testing module switches and outputs the final test report to the display panel, which includes the test results of each module and the conclusion of whether the final acceptance has passed.

[0101] In addition, after all testing modules have been tested, the test connection wires must be disconnected and the fixing mechanism box components removed in order to proceed with the testing of the next disconnector mechanism box.

[0102] It should be noted that the embodiments of the present invention do not limit the detection order of each detection module, and those skilled in the art can choose a suitable detection order according to their needs.

[0103] The technical solution of this invention realizes automatic detection of the function of the disconnector switch mechanism box through the control circuit board in the detection device. It solves the problems of low efficiency and risk of electric shock in the existing manual detection of disconnector switch mechanism boxes using multimeters. It has the beneficial effects of avoiding personal safety risks and improving the efficiency of detection work.

[0104] Example 3

[0105] Based on the above embodiments, this embodiment describes the specific circuit of the detection device 2. Figure 7 This is a circuit diagram of the control circuit of the detection device provided in an embodiment of the present invention. Figure 8 The circuit diagram of the AC power output circuit of the detection device provided in the embodiment of the present invention is as follows. Figure 9 A circuit diagram of the auxiliary power supply circuit for the detection device provided in this embodiment of the invention. Figure 10 This is a circuit diagram of the status indication circuit of the detection device provided in an embodiment of the present invention. Figure 11 The circuit diagram shows the 220V AC heating power supply current detection circuit of the AC power output circuit provided in the embodiment of the present invention. Figure 12 The circuit diagram shows the 220V AC control power supply current detection circuit for the AC power output circuit provided in an embodiment of the present invention. Figure 13 The circuit diagram shows the 380V AC power supply current detection circuit of the AC power output circuit provided in the embodiment of the present invention. Figure 14 The circuit diagram shows the 380V AC power supply voltage detection circuit of the AC power output circuit provided in the embodiment of the present invention. Figure 15 The circuit diagram for the 380V AC power supply control relay of the AC power output circuit provided in the embodiment of the present invention is as follows. Figure 16 The circuit diagram shows the leakage current detection circuit for the AC power output circuit provided in this embodiment of the invention. Figure 17 A circuit diagram of a 220V AC power supply control relay for an AC power output circuit provided in an embodiment of the present invention. (Reference) Figures 7-17The circuit of the detection device 2 includes: a control circuit 31, an AC power output circuit 32, an auxiliary power supply circuit 33, and a status indication circuit 34. The AC power output circuit 32 includes: a 220V AC heating power supply current detection circuit 321, a 220V AC control power supply current detection circuit 322, a 380V AC power supply current detection circuit 323, a 380V AC power supply voltage detection circuit 324, a 380V AC power supply control relay 325, a leakage protection current detection circuit 326, and a 220V AC power supply control relay 327.

[0106] refer to Figure 5 , Figures 7-15 The output terminal of the 220V AC heating power supply is electrically connected to the heating power supply AC 220V (L, N) at the power input of the secondary circuit to be tested. The output terminal of the 220V AC control power supply is electrically connected to the control power supply AC 220V (L, N) at the power input of the secondary circuit to be tested. The output terminal of the 380V AC power supply is electrically connected to the motor power supply AC 380V (L1, L2, L3) at the power input of the secondary circuit to be tested.

[0107] In the above embodiments one and two, the voltage detection circuit and current detection circuit that detect the voltage and current of the secondary circuit to be tested during the circuit detection, mechanism jamming detection and disconnection switch mechanism box 1 response function test are the 220V AC heating power supply current detection circuit, 220V AC control power supply current detection circuit, 380V AC power supply current detection circuit and 380V AC power supply voltage detection circuit in the example of this invention.

[0108] It should be noted that TA1, TA2 and TA3 in the 380V AC power supply current detection circuit of the AC power output circuit in the embodiment of the present invention are clamp-on ammeters.

[0109] The technical solution of this invention realizes automatic detection of the function of the disconnector switch mechanism box through the detection device in the above embodiments, which solves the problems of low efficiency and risk of electric shock in the existing manual detection of disconnector switch mechanism boxes using multimeters. It has the beneficial effects of avoiding personal safety risks and improving detection efficiency.

[0110] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A testing device for a disconnector switch mechanism box, characterized in that, The disconnector switch mechanism box includes the secondary circuit to be tested; The detection device includes: a power port, an AC output terminal, a test connection cable, and a control circuit board; The secondary circuit to be tested and the AC output terminal are electrically connected through the test connection line; The power port is used to provide input power to the detection device; The control circuit board is used to perform functional testing on the disconnector mechanism box, wherein the functional testing includes at least: loop detection; The disconnector switch mechanism box also includes a transmission mechanism; The detection device also includes: a photoelectric encoder and a retractable stall clamp; The control circuit board is used to perform functional testing on the disconnector switch mechanism box, wherein the functional testing further includes: overcurrent and phase loss protection testing, mechanism jamming testing, and mechanism rotation angle testing; The photoelectric encoder is used to detect the rotation angle and speed of the transmission mechanism; The retractable stall clamp is used to clamp the transmission mechanism of the frame box, and works with the control circuit board to realize overcurrent protection detection of the isolating switch mechanism box.

2. The detection device according to claim 1, characterized in that, The detection device further includes: a control button; The control buttons include a start button, a pause button, and a stop button, used to control the start and stop of the detection device.

3. The detection device according to claim 1, characterized in that, The control circuit board includes: a loop detection module and its switch, an overcurrent and phase loss protection detection module and its switch, a mechanism jamming detection module and its switch, a mechanism rotation angle detection module and its switch, and a switch logic control module; The control circuit board is electrically connected to the power port and the AC output terminal. The switch logic control module is used to control the on / off state of each detection module switch.

4. The detection device according to claim 3, characterized in that, When the detection device performs functional testing, the switch logic control module can only close one detection module switch at a time to perform testing on one detection module.

5. The detection device according to claim 4, characterized in that, When the switch logic control module closes the switch of the loop detection module, the loop detection module starts to work; The circuit detection module is used to detect whether there is a short circuit or an open circuit in the secondary circuit to be detected.

6. The detection device according to claim 4, characterized in that, When the switch logic control module closes the switch of the overcurrent and phase loss protection detection module, the overcurrent and phase loss protection detection module starts to work; The overcurrent and phase loss protection detection module is used to detect whether the overcurrent protection and phase loss protection of the disconnect switch mechanism box are normal. Before the overcurrent and phase loss protection detection module detects whether the overcurrent protection of the disconnector mechanism box is normal, the retractable stall clamp first clamps the transmission mechanism of the disconnector mechanism box.

7. The detection device according to claim 4, characterized in that, When the switch logic control module closes the switch of the mechanism jamming detection module, the mechanism jamming detection module starts to work; The mechanism jamming detection module is used to determine whether the disconnector switch mechanism box is jammed based on the rotation speed and angle of the transmission mechanism and the current in the secondary circuit to be tested.

8. The detection device according to claim 4, characterized in that, When the switch logic control module closes the switch of the mechanism rotation angle detection module, the mechanism rotation angle detection module starts to work; The mechanism rotation angle detection module is used to determine whether the disconnector switch mechanism box meets the rotation degree requirement based on the rotation angle of the transmission mechanism.

9. The detection device according to claim 4, characterized in that, After all testing modules have completed their tests, the switch logic control module disconnects all testing module switches and outputs a final test report, which includes the test results of each module and a final acceptance conclusion.

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