Grounding switch double-confirmation structure
By coordinating the signals of the proximity switch and the grounding switch, and using a metal trigger element to form an independent signal with the proximity switch, the reliability problem of the dual confirmation signal in the operation of the grounding switch is solved, and a highly efficient and stable dual confirmation effect is achieved.
Patent Information
- Application Number
- CN202520006643.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-02
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2035-01-02
AI Technical Summary
Existing grounding switch operations cannot meet the independence and reliability requirements of the "one-button sequential control" system for dual confirmation signals. Microswitch solutions are easily affected by environmental factors, and video linkage systems are complex and costly.
The proximity switch and the grounding switch generate their own signals, and the closing and opening triggers form independent double confirmation signals with the proximity switch. Non-contact triggering is achieved by using metal bolts or pins, and the signal is led out by intermediate relays or contactors.
It achieves efficient, stable, and economical fulfillment of the dual confirmation signal requirements of the "one-click sequential control" system, avoiding mechanical wear and environmental impact.
Smart Images
Figure CN223842815U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of switchgear, and in particular to a double-confirmation structure for a grounding switch. Background Technology
[0002] In switchgear, grounding switches are critical components, and the safety and accuracy of their operation directly affect the stable operation of the entire system. To ensure the reliability of grounding switches during operation, the State Grid Corporation of China has proposed a requirement for dual confirmation signals for "one-button sequential control." This requirement aims to confirm that the equipment has been correctly operated by synchronous changes in at least two non-coordinated indicators, thereby avoiding misjudgments caused by a single signal source failure.
[0003] Currently, grounding switch operating mechanisms are generally equipped with a set of limit switches to provide a set of status signals that reflect the actual position of the switch. However, relying solely on this set of signals is insufficient to meet the dual confirmation signal requirements of a "one-button sequential control" system. Therefore, it is necessary to explore new signal implementation methods to ensure the independence and reliability of the dual confirmation signals.
[0004] In existing technologies, there are two main solutions for implementing dual confirmation signals: one is to add a microswitch to the grounding switch body, forming two independent signal sources through the cooperation of the microswitch and limit switch; the other is to introduce a video linkage system, using a high-definition camera to monitor the operation of the grounding switch in real time, and extracting the switch position information through image recognition technology as the second signal source. The microswitch solution has the advantages of simple structure and low cost, but it relies on the reliability of mechanical components and is easily affected by environmental factors. The video linkage system solution, on the other hand, has the advantages of being intuitive, accurate, and not limited by the environment, but the system complexity is higher, and the requirements for hardware and software are also higher.
[0005] In summary, to further improve the safety and reliability of the "one-click sequential control" system, especially in the critical link of the grounding switch, a more efficient, stable, and economical method for implementing dual confirmation signals is needed. Utility Model Content
[0006] The purpose of this utility model is to solve the above-mentioned technical problems and provide a double confirmation structure for a grounding switch. This application aims to provide a new double confirmation structure for a grounding switch.
[0007] A dual-confirmation structure for a grounding switch includes a grounding switch, a proximity switch, and a mounting cabinet. The grounding switch and the proximity switch are installed in the mounting cabinet. The grounding switch includes a main shaft, and rotation of the main shaft causes the grounding switch to close or open. The proximity switch is located on the side of the main shaft. The main shaft is equipped with a closing trigger and a closing trigger. The proximity switch includes a closing proximity switch and a closing proximity switch. When the main shaft rotates to the closing position, the closing trigger engages with the closing proximity switch. When the main shaft rotates to the opening position, the opening trigger engages with the opening proximity switch.
[0008] The grounding switch dual confirmation structure of this application uses the proximity switch and the signal generated by the grounding switch itself to form an independent dual confirmation signal. When the main shaft rotates to the closed position, the closing trigger and the closing proximity switch are activated, and the closing proximity switch generates a closing confirmation signal. When the main shaft rotates to the open position, the opening trigger and the opening proximity switch are activated, and the opening proximity switch generates an opening confirmation signal, which perfectly meets the dual confirmation signal requirements of "one-button sequential control".
[0009] Furthermore, the closing trigger or opening trigger is a metal bolt or a metal pin. The metal bolt or metal pin can be easily fixed to the main shaft.
[0010] Furthermore, the mounting cabinet includes a mounting plate, on which the closing proximity switch and the opening proximity switch are mounted side by side.
[0011] Furthermore, the mounting plate extends upwards towards the main shaft, positioning the closing proximity switch and the opening proximity switch above the main shaft.
[0012] Furthermore, the grounding switch also includes an operating shaft, a connecting rod, and a switch body. The main shaft is rotatably mounted on the switch body, and the operating shaft is connected to the main shaft via the connecting rod.
[0013] Furthermore, the lower part of the mounting cabinet is provided with a cable compartment, and the grounding switch is installed in the cable compartment. Attached Figure Description
[0014] Figure 1 This is a cross-sectional view of the dual-confirmation structure of the grounding switch of this utility model.
[0015] Figure 2 This is a partially enlarged view of the double-confirmation structure of the grounding switch of this utility model.
[0016] Figure 3 This is the electrical schematic diagram of the double-confirmation structure of the grounding switch of this utility model. Detailed Implementation
[0017] The following description, in conjunction with the accompanying drawings, illustrates a dual-confirmation structure for a grounding switch according to this utility model.
[0018] like Figures 1 to 3 The diagram illustrates a dual-confirmation structure for a grounding switch, comprising a grounding switch 10, a proximity switch, and a mounting cabinet 1. The mounting cabinet 1 is a cabinet for switchgear, such as a circuit breaker cabinet. The grounding switch 10 and the proximity switch are installed in the mounting cabinet 1. The grounding switch 10 includes a main shaft 5, the rotation of which causes the grounding switch to close or open. The grounding switch 10 itself has a limit switch, which generates a set of confirmation signals for closing and opening the grounding switch 10. To meet the requirement of dual confirmation signals for "one-button sequential control," this application also includes a... The main shaft 5 of the ground switch 10 is equipped with another set of confirmation signals. The proximity switch is located on the side of the main shaft 5. The main shaft 5 is equipped with a closing trigger 61 and a opening trigger 62. The proximity switch includes a closing proximity switch 81 and an opening proximity switch 82. When the main shaft 5 rotates to the closing position, the closing trigger 61 and the closing proximity switch 81 are activated, and the closing proximity switch 81 generates a closing confirmation signal. When the main shaft 5 rotates to the opening position, the opening trigger 62 and the opening proximity switch 82 are activated, and the opening proximity switch 82 generates an opening confirmation signal.
[0019] like Figure 2 As shown, the proximity switch and the main shaft 5 are non-contact triggered, preventing mutual wear between them. The closing trigger 61 or opening trigger 62 is a metal bolt or metal pin, which can be easily fixed to the main shaft 5. Figure 2 or Figure 3 As shown, when the grounding switch 10 is closed or opened, the rotation of the main shaft 5 will cause the metal bolt or metal pin to move closer to or away from the sensing surface of the proximity switch, thereby causing the proximity switch to perform an on / off action. Using an intermediate relay or contactor, the signal generated by the grounding switch 10 is led out in the form of a passive auxiliary point as a confirmation signal for another combination of closing or opening in this application.
[0020] like Figure 2 As shown, the mounting cabinet 1 includes a mounting plate 7, and the closing proximity switch 81 and the opening proximity switch 82 are mounted side by side on the mounting plate 7.
[0021] like Figure 2 As shown, the mounting plate 7 includes an extension portion and a fixed portion. The extension portion extends upwards towards the main shaft 5. The mounting cabinet 1 also includes a side wall for the mounting plate 7 to be fixedly installed. The fixed portion is fixed to the side wall, so that the closing proximity switch 81 and the opening proximity switch 82 are positioned above the main shaft 5. When the closing trigger 61 and the opening trigger 62 rotate with the main shaft 5 to the vertical direction, they can trigger the closing trigger 61 and the opening trigger 62 to generate a closing or opening confirmation signal with the closing proximity switch 81 and the opening proximity switch 82.
[0022] The closing trigger 61 and the opening trigger 62 are oriented at an angle, which is the same as the rotation angle of the main shaft 5 from the closing position to the opening position. Preferably, the angle between the orientations of the closing trigger 61 and the opening trigger 62 is 90 degrees.
[0023] like Figure 1 and Figure 2 As shown, the grounding switch 10 also includes an operating shaft 2, a connecting rod 3, and a switch body 4. The main shaft 5 is rotatably mounted on the switch body 4. The operating shaft 2 is connected to the main shaft 5 via the connecting rod 3. When the grounding switch 10 is closed or opened, the operating shaft 2 is rotated clockwise or counterclockwise, and the connecting rod 3 drives the main shaft 5 to rotate clockwise or counterclockwise, causing the closing trigger 61 or opening trigger 62 on the main shaft 5 to move closer to or further away from the proximity switch, thereby triggering the proximity switch to open or close. Through an intermediate relay or contactor, the signal of the proximity switch can be led out in the form of a passive auxiliary point, so that it cooperates with the limit switch in the switch body 4 to form a non-homogeneous signal with "one-button sequential control" double confirmation.
[0024] like Figure 1 As shown, the lower part of the mounting cabinet 1 is provided with a cable compartment 9, and the grounding switch 10 is installed in the cable compartment 9.
[0025] Based on the disclosure and teachings of the above specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments disclosed and described above, and some modifications and changes to this utility model should also fall within the protection scope of the claims of this utility model. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on this utility model.
Claims
1. A dual-confirmation structure for a grounding switch, characterized in that, The device includes a grounding switch, a proximity switch, and a mounting cabinet. The grounding switch and the proximity switch are installed in the mounting cabinet. The grounding switch includes a main shaft, and the rotation of the main shaft causes the grounding switch to close or open. The proximity switch is located on the side of the main shaft. The main shaft is equipped with a closing trigger and a closing trigger. The proximity switch includes a closing proximity switch and a closing proximity switch. When the main shaft rotates to the closing position, the closing trigger engages with the closing proximity switch. When the main shaft rotates to the opening position, the opening trigger engages with the opening proximity switch.
2. The grounding switch double confirmation structure according to claim 1, characterized in that, The closing trigger or opening trigger is a metal bolt or a metal pin.
3. The grounding switch double-confirmation structure according to claim 1 or 2, characterized in that, The mounting cabinet includes a mounting plate, on which the closing proximity switch and the opening proximity switch are mounted side by side.
4. The grounding switch dual-confirmation structure according to claim 3, characterized in that, The mounting plate extends upwards towards the main shaft, positioning the closing proximity switch and the opening proximity switch above the main shaft.
5. The grounding switch double confirmation structure according to claim 1, characterized in that, The grounding switch also includes an operating shaft, a connecting rod, and a switch body. The main shaft is rotatably mounted on the switch body, and the operating shaft is connected to the main shaft via the connecting rod.
6. The grounding switch double confirmation structure according to claim 1, characterized in that, The lower part of the mounting cabinet is provided with a cable compartment, and the grounding switch is installed in the cable compartment.