A diagnostic tool for a drawer switch

Abstract

The application belongs to the technical field of diagnostic tools, and discloses a diagnostic tool for a drawer switch, which comprises an operation panel, a mounting shell fixed on the operation panel, an adjusting knob arranged on the operation panel, a control detection unit arranged in the mounting shell and used for carrying out insulation and direct resistance detection diagnosis on the drawer switch, a button arranged on the operation panel, a display screen arranged on the operation panel, the adjusting knob, the button and the display screen being electrically connected with the control detection unit, the control detection unit realizing automatic collection and analysis of insulation and direct resistance parameters through an internal circuit module, the mounting shell being provided with a connecting mechanism used for connecting the device with the drawer switch in an electrical signal mode, and the connecting mechanism being signal-connected with the control detection unit. Through the adjusting knob, the control detection unit and the connecting mechanism, automatic control of drawer switch testing is realized, the safety and accuracy of operation are ensured, the testing efficiency is improved, and the maintenance period is greatly shortened.

Description

Technical Field

[0001] This utility model relates to the field of diagnostic tools, and in particular to a diagnostic tool for a drawer switch. Background Technology

[0002] Drawer-type switchgear involves the operation of electrical equipment and requires regular inspection of factors such as the condition of insulation materials, the tightness of connections, and environmental humidity to avoid safety hazards such as leakage and short circuits caused by aging or moisture.

[0003] Existing testing tools require manual connection of the multiple terminals of the test terminal and the drawer switch, lacking a fixed connection structure, which easily leads to testing errors due to incorrect wiring; in addition, there is no insulation protection structure after connection, and the exposed conductive parts pose a risk of electric shock; at the same time, there is a lack of automated control module, requiring manual recording and analysis of data, which is inefficient. Utility Model Content

[0004] To address the aforementioned problems, this invention provides a diagnostic tool for drawer switches.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a diagnostic tool for a drawer switch, comprising an operation panel, a mounting shell fixed on the operation panel, an adjustment knob on the operation panel, a control detection unit for performing insulation and DC resistance detection and diagnosis on the drawer switch inside the mounting shell, buttons on the operation panel, and a display screen on the operation panel. The adjustment knob, buttons, and display screen are all electrically connected to the control detection unit. The control detection unit automatically collects and analyzes insulation and DC resistance parameters through an internal circuit module. A connection mechanism for electrically connecting the device to the drawer switch is provided on the mounting shell. The connection mechanism is signal-connected to the control detection unit. The connection mechanism achieves quick electrical connection with the drawer switch through a plug-in structure.

[0006] By adopting the above technical solution, the connecting mechanism is first electrically connected to the drawer switch. Then, a one-button test is performed to initiate a preset automatic test process. Next, through the coordination of the control detection unit and the connecting mechanism, the current status information of the drawer switch (such as whether it is in an isolated state, current valve position feedback, etc.) is acquired in real time. Simultaneously, key parameters such as the insulation resistance and DC resistance of the drawer's main circuit are acquired and transmitted synchronously to the internal processing unit for real-time observation by the operator. At the same time, the control detection unit analyzes the collected parameters according to preset test standards (such as insulation resistance threshold, safe operating conditions, etc.), such as determining whether the drawer is currently in an isolated state. Once in a testable state and testing conditions are met, the control system issues a series of action commands to the drawer switch: It provides 220VAC power to the drawer control circuit via the power system to ensure the drawer has the necessary power to operate; it sends "open" or "close" action commands to the drawer to simulate switch operation; if remote operation simulation is required, it also simulates remote control signals via the PROFIBUS remote start / stop system to verify the drawer's remote response capability. During command execution, the control system receives real-time feedback signals from the drawer (such as switch status changes, valve position feedback, etc.) through secondary connectors and transmits this information to the display screen to show the test progress and results in real time. If any abnormality occurs (such as action timeout or parameter exceeding limits), the control program immediately issues a "stop" command and displays the fault on the display screen. Finally, after the test is completed, the control system stores all parameters of this test (such as action time, insulation resistance value, switch status change curve, etc.) in the internal database, realizing historical data recording and providing a basis for subsequent analysis. Through this process, automated control of the drawer switch test is achieved, ensuring both operational safety and accuracy while improving testing efficiency. Furthermore, during the testing process, rotating the adjustment knob can be used to manually set or simulate valve states during the commissioning phase, helping technicians verify whether the control system responds correctly to different states. For example, in the absence of a real valve, adjusting the knob can simulate the "open" or "closed" state to test whether the control loop is working properly, solving the problem that existing tools cannot cope with the state limitations of downstream equipment (such as electric valves).

[0007] Furthermore, the control and testing unit includes a control test circuit fixed inside the mounting housing, a DC resistance test module fixed on the control test circuit, an insulation test module fixed on the control test circuit, and a control test module fixed on the control test circuit. The DC resistance test module, the insulation test module, and the control test module are all electrically connected to the control test circuit, and the control test circuit is electrically connected to the connection mechanism.

[0008] By adopting the above technical solution, and through the cooperation of the control test circuit, DC resistance test module, insulation test module, control test module and connection mechanism, the purpose of testing drawer switches can be achieved.

[0009] Furthermore, the connection mechanism includes a connection component, which includes a connection wire fixed to and electrically connected to the control test circuit, a plug fixed to and electrically connected to the connection wire, a socket sleeved on the plug, and a conductive rod fixed to the socket. The plug has a conductive slot that engages with the conductive rod. The conductive slot is electrically connected to the connection wire. The conductive rod is connected to the terminal of the drawer switch. The socket is disposed through and fixed to the drawer switch.

[0010] By adopting the above technical solution, the socket is pre-fixed on the drawer switch, and the conductive plug is connected to the circuit on the drawer switch. Then, the plug is inserted into the socket, and the drawer switch can be tested through the conductive plug, connecting wire, and control test circuit. After the test, the plug can be separated from the socket. Since the socket is permanently fixed on the drawer switch, it is convenient for the next use of the device, and there is no need to manually connect wires for each test. Combined with the centralized power supply design, it eliminates the risk of contact with exposed live parts, reduces the probability of electric shock and wiring errors, and improves safety.

[0011] Furthermore, the connecting mechanism also includes a lifting assembly, which includes a connecting plate fixed to the plug, a lifting plate fixed to the connecting plate, a sliding block disposed on the lifting plate, an insulating baffle that is slidably disposed on the socket, and an insulating shell fixed to the sliding block. The insulating shell has a through hole that slidably engages with the lifting plate. The sliding block is located inside the insulating shell. The distance between the bottom of the sliding block and the top of the socket gradually decreases from the plug to the socket. The angle between the bottom of the sliding block and the top of the socket is between 5° and 15° from the plug. The connecting mechanism also includes a reset assembly for the sliding block to descend.

[0012] By adopting the above technical solution, during the process of separating the plug from the socket, the connecting plate connected to the plug and the lifting plate connected to the connecting plate both move away from the insulating shell. During this process, the connecting wire first separates from the plug. At this time, the lifting plate and the sliding block are still in contact. Then, the plug is pulled until the lifting plate and the sliding block separate. At this time, the reset component causes the sliding block to descend until the insulating baffle contacts the inner bottom wall of the socket. The through hole reduces the probability of dust entering the socket and prevents workers from accidentally touching the conductive parts inside the socket, thus improving safety.

[0013] Furthermore, the reset assembly includes a connecting block fixed to the sliding block and a spring fixed between the connecting block and the inner bottom wall of the insulating shell and in a stretched state.

[0014] By adopting the above technical solution, during the process of the lifting plate moving away from the sliding block, the plug first separates from the socket, the spring is stressed and gradually contracts, causing the connecting block connected to the spring, the sliding block connected to the connecting block, and the insulating baffle connected to the sliding block to all descend until the insulating baffle is in contact with the inner bottom wall of the socket, ensuring the normal protective function of the insulating baffle.

[0015] Furthermore, the reset assembly also includes a slide rod fixed inside the insulating shell, the slide rod passing through the connecting block and slidingly engaged.

[0016] By adopting the above technical solution and setting the slide bar, the stability during the lifting and lowering of the connecting blocks is improved.

[0017] Furthermore, the distance between the end of the lifting plate away from the connecting plate and the socket gradually increases from the socket to the connecting line.

[0018] By adopting the above technical solution, the resistance between the lifting plate and the sliding block is reduced during the process of inserting the lifting plate into the through hole.

[0019] Furthermore, a handle is fixed to the mounting shell, and a wavy groove is formed on the inner wall of the handle.

[0020] By adopting the above technical solution, the wavy groove design reduces the probability of slippage when workers hold the handle.

[0021] In summary, this utility model has the following beneficial effects: In this application, by setting an adjustment knob, a control detection unit and a connecting mechanism, the automated control of the drawer switch test is realized, which not only ensures the safety and accuracy of the operation, but also improves the testing efficiency and significantly shortens the maintenance period. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model; Figure 2 This is a schematic diagram illustrating the internal structure of this utility model embodiment; Figure 3 This is a cross-sectional schematic diagram of an embodiment of the present invention to highlight the internal structure of the insulating shell; Figure 4 This is a cross-sectional schematic diagram of an embodiment of the present invention to highlight the connection structure between the sliding block and the lifting plate.

[0023] In the diagram: 1. Operation panel; 2. Mounting housing; 3. Adjustment knob; 4. Control and detection unit; 41. Control test circuit; 42. DC resistance test module; 43. Insulation test module; 44. Control test module; 5. Button; 6. Display screen; 7. Connection mechanism; 71. Connection component; 711. Connection wire; 712. Plug; 713. Socket; 714. Conductive insertion rod; 715. Conductive slot; 72. Lifting component; 721. Connecting plate; 722. Lifting plate; 723. Sliding block; 724. Insulating baffle; 725. Insulating housing; 726. Through hole; 73. Reset component; 731. Connecting block; 732. Spring; 733. Slide rod; 8. Handle. Detailed Implementation

[0024] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. 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.

[0025] like Figure 1-4As shown in the figure, this application discloses a diagnostic tool for a drawer switch, including an operation panel 1, a control detection unit 4, and a connecting mechanism 7. A mounting shell 2 is fixed on the operation panel 1, and an adjustment knob 3 is provided on the operation panel 1. Buttons 5 and a display screen 6 are provided on the operation panel 1. The adjustment knob 3, buttons 5, and display screen 6 are all electrically connected to the control detection unit 4. First, connect the connecting mechanism 7 to the drawer switch electrical signal. Then, perform a one-click test using operation button 5 to initiate the preset automatic test process. (The first step identifies the critical path, i.e., the key process sequence that determines the total project duration, optimizes the priority of tasks on the critical path, and compresses the time of tasks with less impact on quality and safety and sufficient resource support. The second step arranges parallel operations on non-critical paths, or reasonably inserts parallel subtasks on the critical path to improve overall efficiency. The third step optimizes the utilization efficiency of manpower, equipment, and other resources and reduces idle time through a dynamic resource allocation model, such as linear programming or heuristic algorithms. The fourth step uses historical project data and a real-time progress monitoring system to identify potential risks through test analysis, such as Monte Carlo simulation, and dynamically adjusts the plan to optimize and shorten the entire test period.) Then, by controlling the cooperation between the detection unit 4 and the connecting mechanism 7, the current status information of the drawer switch (such as whether it is in an isolated state, current valve position feedback, etc.) is obtained in real time. Simultaneously, the system acquires key parameters such as insulation resistance and DC resistance of the drawer's main circuit and transmits this data synchronously to the internal processing unit for real-time observation by the operator. Meanwhile, the control and detection unit 4 analyzes the collected parameters according to preset test standards (such as insulation resistance thresholds and safe operating conditions). For example, it determines whether the drawer is currently in a testable state. If the test conditions are met, the control system issues a series of action commands to the drawer switch: providing 220VAC power to the drawer control circuit through the power system to ensure the drawer has the necessary power; sending "open" or "close" action commands to the drawer to simulate switch operation; and if remote operation simulation is required, simulating remote control signals through the PROFIBUS remote start / stop system to verify the drawer's remote response capability. Subsequently, during command execution, the control system receives real-time action feedback signals from the drawer (such as switch status changes and valve position feedback) through secondary connectors and transmits this information to the display screen 6 to display the test progress and results in real time. If any abnormality occurs (such as action timeout or parameter exceeding the standard), the control program will immediately issue a "stop" command and display the fault on the display screen 6. After the test is completed, the control system will store all parameters of this test (such as action time, insulation resistance value, switch state change curve, etc.) in the internal database to realize the historical recording of data and provide a basis for subsequent analysis. Through this process, the automated control of drawer switch testing is realized, which not only ensures the safety and accuracy of operation, but also improves the testing efficiency.In addition, during the testing process, the rotary adjustment knob 3 can be used to manually set or simulate valve states during the commissioning phase, helping technicians verify whether the control system responds correctly to different states. For example, in the absence of a real valve, adjusting the knob 3 can simulate the "open" or "closed" state to test whether the control loop is working properly, solving the problem that existing tools cannot cope with the state limitations of downstream equipment (such as electric valves).

[0026] The control and testing unit 4 is housed within the mounting housing 2. It is used for insulation and DC resistance testing and diagnostics of the drawer switch. The control and testing unit 4 includes a control test circuit 41, a DC resistance test module 42, an insulation test module 43, and a control test module 44. The control test circuit 41 is fixed within the mounting housing 2. The control test circuit 41 is electrically connected to the connecting mechanism 7. The DC resistance test module 42 and the insulation test module 43 are fixed to the control test circuit 41. The control test module 44 is also fixed to the control test circuit 41. The DC resistance test module 42, the insulation test module 43, and the control test module 44 are all electrically connected to the control test circuit 41. Through the cooperation of the control test circuit 41, the DC resistance test module 42, the insulation test module 43, the control test module 44, and the connecting mechanism 7, the purpose of testing the drawer switch is achieved.

[0027] A connecting mechanism 7 is mounted on the mounting housing 2 and is used to electrically connect the device to the drawer switch. The connecting mechanism 7 includes a connecting component 71, a lifting component 72, and a resetting component 73. The connecting component 71 includes a connecting wire 711, a plug 712, a socket 713, and a conductive rod 714. The connecting wire 711 is fixed to and electrically connected to the control test circuit 41, and the plug 712 is fixed to and electrically connected to the connecting wire 711. The socket 713 is fitted onto the plug 712 and passes through and is fixed to the drawer switch. The conductive rod 714 is connected to the terminal of the drawer switch and is fixed to the socket 713. The plug 712 has a conductive slot 715 that engages with the conductive rod 714, and the conductive slot 715 is electrically connected to the connecting wire 711. The socket 713 is pre-fixed on the drawer switch, and the conductive plug 714 is connected to the circuit on the drawer switch. Then, the plug 712 is inserted into the socket 713. The drawer switch can be tested through the conductive plug 714, the connecting wire 711, and the control test circuit 41. After the test, the plug 712 can be separated from the socket 713. Since the socket 713 is permanently fixed on the drawer switch, it is convenient for the next use of the device. On the other hand, it eliminates the need for manual wiring every time the device is tested. Combined with the centralized power supply design, it eliminates the risk of contact with exposed live parts, reduces the probability of electric shock and wiring errors, and improves safety.

[0028] The lifting assembly 72 includes a connecting plate 721, a lifting plate 722, a sliding block 723, an insulating baffle 724, and an insulating shell 725. The connecting plate 721 is fixed to the plug 712. The lifting plate 722 is fixed to the connecting plate 721, and the sliding block 723 is disposed on the lifting plate 722. The distance between the bottom of the sliding block 723 and the top of the socket 713 gradually decreases from the plug 712 to the socket 713. The sliding block 723 is located inside the insulating shell 725. The insulating baffle 724 is disposed through the socket 713 and slides in engagement with it. The insulating shell 725 is fixed to the sliding block 723, and a through hole 726 is disposed through the insulating shell 725 to slide in engagement with the lifting plate 722. During the separation of plug 712 from socket 713, the connecting plate 721 connected to plug 712 and the lifting plate 722 connected to connecting plate 721 both move away from the insulating shell 725. During this process, the connecting wire 711 first separates from plug 712. At this time, the lifting plate 722 is still in contact with the sliding block 723. Then, the plug 712 is pulled until the lifting plate 722 separates from the sliding block 723. At this time, the reset component 73 causes the sliding block 723 to descend until the insulating baffle 724 contacts the inner bottom wall of socket 713. The through hole 726 reduces the probability of dust entering socket 713 and prevents workers from accidentally touching the conductive parts inside socket 713, thus improving safety.

[0029] The reset assembly 73 is used for the descent of the sliding block 723. The reset assembly 73 includes a connecting block 731 and a spring 732. The connecting block 731 is fixed to the sliding block 723, and the spring 732 is fixed between the connecting block 731 and the inner bottom wall of the insulating shell 725 and is in an elongated state. As the lifting plate 722 moves away from the sliding block 723, the plug 712 first separates from the socket 713. The spring 732 is stressed and gradually contracts, causing the connecting block 731 connected to the spring 732, the sliding block 723 connected to the connecting block 731, and the insulating baffle 724 connected to the sliding block 723 to all descend until the insulating baffle 724 is in contact with the inner bottom wall of the socket 713, ensuring the normal protective function of the insulating baffle 724.

[0030] The reset assembly 73 also includes a slide rod 733, which is fixed inside the insulating shell 725 and passes through the connecting block 731 and slides in engagement with it. The slide rod 733 improves the stability of the connecting block 731 when it is raised or lowered.

[0031] The distance between the end of the lifting plate 722 furthest from the connecting plate 721 and the socket 713 gradually increases from the socket 713 to the connecting wire 711. This reduces the resistance between the lifting plate 722 and the sliding block 723 during the insertion of the lifting plate 722 into the through hole 726.

[0032] A handle 8 is fixed to the mounting housing 2, and a wavy groove is formed on the inner wall of the handle 8. The wavy groove reduces the probability of slippage when the operator holds the handle 8.

[0033] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A diagnostic tool for drawer switches, characterized in that: The device includes an operation panel (1), a mounting shell (2) fixed on the operation panel (1), an adjustment knob (3) on the operation panel (1), a control detection unit (4) for performing insulation and DC resistance detection and diagnosis on the drawer switch inside the mounting shell (2), the control detection unit (4) realizes automatic acquisition and analysis of insulation and DC resistance parameters through internal circuit modules, a button (5) on the operation panel (1), a display screen (6) on the operation panel (1), the adjustment knob (3), the button (5) and the display screen (6) are all connected to the control detection unit (4) by circuit, and a connection mechanism (7) for connecting the device to the drawer switch by electrical signal on the mounting shell (2), the connection mechanism (7) is connected to the control detection unit (4) by electrical signal, and the connection mechanism (7) realizes quick electrical connection with the drawer switch through a plug-in structure.

2. The diagnostic tool for a drawer switch according to claim 1, characterized in that: The control and testing unit (4) includes a control test circuit (41) fixed in the mounting housing (2), a DC resistance test module (42) fixed on the control test circuit (41), an insulation test module (43) fixed on the control test circuit (41), and a control test module (44) fixed on the control test circuit (41). The DC resistance test module (42), the insulation test module (43), and the control test module (44) are all connected to the control test circuit (41) by circuit. The control test circuit (41) is electrically connected to the connection mechanism (7).

3. A diagnostic tool for a drawer switch according to claim 1, characterized in that: The connection mechanism (7) includes a connection component (71), which includes a connection line (711) fixed to the control test circuit (41) and electrically connected, a plug (712) fixed to the connection line (711) and electrically connected, a socket (713) sleeved on the plug (712), and a conductive rod (714) fixed on the socket (713). The plug (712) has a conductive slot (715) that engages with the conductive rod (714). The conductive slot (715) is electrically connected to the connection line (711). The conductive rod (714) is connected to the terminal of the drawer switch. The socket (713) is installed through the drawer switch and fixed.

4. A diagnostic tool for a drawer switch according to claim 3, characterized in that: The connecting mechanism (7) further includes a lifting assembly (72), which includes a connecting plate (721) fixed to the plug (712), a lifting plate (722) fixed to the connecting plate (721), a sliding block (723) disposed on the lifting plate (722), an insulating baffle (724) that is slidably disposed on the socket (713), and an insulating shell (725) fixed to the sliding block (723). The insulating shell (725) is provided with a through-hole that is connected to the lifting plate (722). 2) A sliding fit through hole (726), the sliding block (723) is located inside the insulating shell (725), the distance between the bottom of the sliding block (723) and the top of the socket (713) gradually decreases from the plug (712) to the socket (713), the angle between the bottom of the sliding block (723) and the top of the socket (713) is between 5° and 15° from the plug (712), and the connecting mechanism (7) also includes a reset component (73) for the sliding block (723) to descend.

5. A diagnostic tool for a drawer switch according to claim 4, characterized in that: The reset assembly (73) includes a connecting block (731) fixed to the sliding block (723) and a spring (732) fixed between the connecting block (731) and the inner bottom wall of the insulating shell (725) and in a stretched state.

6. A diagnostic tool for a drawer switch according to claim 5, characterized in that: The reset assembly (73) also includes a slide rod (733) fixed inside the insulating shell (725), the slide rod (733) passing through the connecting block (731) and slidingly engaging.

7. A diagnostic tool for a drawer switch according to claim 4, characterized in that: The distance between the end of the lifting plate (722) away from the connecting plate (721) and the socket (713) gradually increases from the socket (713) to the connecting line (711). The inclined surface of the lifting plate (722) is designed to reduce the resistance when the lifting plate (722) is inserted or removed.

8. A diagnostic tool for a drawer switch according to claim 1, characterized in that: A handle (8) is fixed on the mounting shell (2), and a wavy groove is provided on the inner wall of the handle (8).

Images