A power GIS pole switch control device

Abstract

The utility model discloses a kind of power GIS knife switch control devices in the technical field of knife switch control, including the body contact of GIS knife switch contact, the body contact includes four flanges integrally made for connection, the body contact side is equipped with the auxiliary part for controlling the opening and closing angle of the action of body contact knife switch mechanism, the body contact is connected with the control part for controlling body knife switch contact, knife switch mechanism is existing more mature control technology, this paper does not carry on decomposition, four flanges can be conveniently connected and installed fixed by four directions for body contact, auxiliary part can drive knife switch structure to occur the opening and closing of different angles, again by using control part, auxiliary part can be accurately controlled, improve the accuracy and practicality of the action control of body contact.

Description

Technical Field

[0001] This utility model relates to the field of disconnector control, specifically a power GIS disconnector control device. Background Technology

[0002] Power GIS disconnector control equipment is the "operational core" of gas-insulated metal-enclosed switchgear (GIS). Its main function is to drive the disconnectors inside the GIS to complete the actions of opening (cutting off the power circuit) and closing (connecting the circuit), and to provide feedback on the position status of the disconnectors. It is a key component to ensure reliable power transmission in substations, power plants and other scenarios. The current mainstream equipment adopts the traditional architecture of ordinary asynchronous motor, mechanical limit switch and auxiliary switch. Ordinary asynchronous motor provides rotational power and is connected to the disconnector shaft through a reduction mechanism. Limit switches are installed at the opening and closing limit positions of the disconnector. The motor is forced to stop by mechanical contact to limit the travel. The auxiliary switch rotates synchronously with the disconnector and transmits the opening and closing position signals to the protection device and monitoring background through the contact opening and closing, forming the basic control logic of drive, limit and feedback. From an operational safety perspective, the problem of low control precision is more likely to be exposed under extreme operating conditions. The lack of external protection mechanisms, such as in low-temperature winter environments, increases in the speed fluctuation of ordinary motors. If the limit switch fails to trigger in time due to low temperature, it can cause the disconnector to overtravel, resulting in contact deformation. Long-term operation may lead to increased contact resistance, local overheating during peak summer loads, and even induce internal insulation breakdown of GIS. The hidden danger of unreliable position feedback is more prominent in thunderstorms. Auxiliary switch contacts are prone to poor contact due to moisture and dust accumulation, causing the monitoring backend to show that the disconnector is open but not actually disconnected. If a sudden line fault occurs at this time, the protection device may misjudge the operating condition and fail to cut off the fault circuit in time, expanding the power outage area. From an operational efficiency perspective, the cumbersome secondary wiring is even more pronounced in substation expansion scenarios. It is also prone to equipment commissioning failures due to wiring errors (such as reversed signal lines or short circuits in power lines), delaying the substation's commissioning schedule. Ordinary asynchronous motors lack data acquisition capabilities and cannot provide real-time feedback on parameters such as rotational torque and speed. When the disconnector becomes stuck due to component wear, the equipment cannot provide early warnings and can only passively repair itself after a fault shutdown. At the same time, the cumbersome secondary wiring lacks standardized interfaces, making it difficult to connect to the substation's digital monitoring system and hindering remote monitoring and precise control of the disconnector's status. Therefore, it is necessary to design a power GIS disconnector control device to solve the above problems. Utility Model Content

[0003] The purpose of this utility model is to provide a power GIS disconnector control device to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a power GIS disconnector control device, comprising a main body contact of a GIS disconnector, the main body contact comprising four integrally formed flanges for connection, an auxiliary component for controlling the opening and closing angle of the disconnector mechanism for controlling the action of the main body contact is installed on one side of the main body contact, and a control component for controlling the main body contact is externally connected to the main body contact.

[0005] Preferably, the auxiliary component includes a mounting bracket installed on one side of the main body contact, a servo motor is mounted on one side of the mounting bracket, and the servo motor is mounted on a rotating shaft via a coupling.

[0006] Preferably, a first gear is fitted on the outer side of the rotating shaft, and a second gear is mounted on the other side of the mounting bracket via a fixed shaft, wherein the first gear meshes with the second gear.

[0007] Preferably, the control unit includes a servo driver electrically connected to a power supply terminal on one side of the servo motor, and the servo driver is electrically connected to the controller.

[0008] Preferably, a gasket is laid on one side of the flange.

[0009] Preferably, a support shaft is mounted on the other side of the mounting bracket, and a third gear for limiting is fitted on the outer side of the support shaft, with the second gear meshing with the third gear.

[0010] Preferably, a protective cover for protection is bolted to the outside of the mounting bracket.

[0011] Compared with the prior art, the beneficial effects of this utility model are: 1. The knife switch mechanism is a relatively mature control technology and will not be described in detail in this article. The four flanges facilitate the connection and installation of the main body contacts in four directions. The auxiliary components can drive the knife switch structure to open and close at different angles. Furthermore, the auxiliary components can be precisely controlled by the control components, thereby improving the accuracy and practicality of the main body contact action.

[0012] 2. The mounting bracket and the main body contact are installed with bolts. The servo motor can drive the rotating shaft to rotate through the coupling. When the rotating shaft rotates, it drives the second gear to rotate through the first gear. The diameter of the first gear is smaller than that of the second gear. The first gear rotates with a larger amplitude than the second gear. When the second gear rotates, it drives the knife switch mechanism to rotate inside the main body contact, thereby realizing different angles of opening and closing to accurately control the action of the main body contact, improving the accuracy and practicality of the action control of the main body contact. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a left view of the overall structure of this utility model; Figure 3 The overall structure of this utility model Figure 2 Enlarged view of point A in the middle; Figure 4 This is a schematic diagram of the electrical connection principle of the control component of the overall structure of this utility model.

[0014] In the diagram: 1. Body contact; 2. Flange; 3. Mounting bracket; 4. Servo motor; 5. Coupling; 6. Rotating shaft; 7. First gear; 8. Fixed shaft; 9. Second gear; 10. Servo driver; 11. Controller; 12. Washer; 13. Support shaft; 14. Third gear; 15. Protective cover; 101. Knife switch mechanism. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Example 1 Please refer to Figure 1-4 As shown, this utility model provides a power GIS disconnector control device, including a GIS disconnector contact body 1. The contact body 1 includes four integrally formed flanges 2 for connection. An auxiliary component for controlling the opening and closing angle of the disconnector mechanism 101 for controlling the action of the contact body 1 is installed on one side of the contact body 1. A control component for controlling the contact body 1 is connected to the outside of the contact body 1. A gasket 12 is laid on one side of the flange 2.

[0017] It should be added that the knife switch mechanism 101 is a relatively mature existing control technology and has not been broken down and described in detail in this article. The four flanges 2 can facilitate the connection and installation of the body contact 1 in four directions. The gasket 12 is placed on one side of the flange 2 for anti-collision, anti-wear and sealing protection. The auxiliary components can drive the knife switch structure to open and close at different angles. By using the control components, the auxiliary components can be precisely controlled to improve the accuracy and practicality of the body contact 1.

[0018] Specifically, the auxiliary components include a mounting bracket 3 installed on one side of the main body contact 1. A servo motor 4 is mounted on one side of the mounting bracket 3. A rotating shaft 6 is mounted on the servo motor 4 via a coupling 5. A first gear 7 is fitted on the outside of the rotating shaft 6. A second gear 9 is mounted on the other side of the mounting bracket 3 via a fixed shaft 8. The first gear 7 meshes with the second gear 9. A support shaft 13 is mounted on the other side of the mounting bracket 3. A third gear 14 for limiting is fitted on the outside of the support shaft 13. The second gear 9 meshes with the third gear 14. A protective cover 15 for protection is bolted to the outside of the mounting bracket 3.

[0019] The mounting bracket 3 is bolted to the main body contact 1. The servo motor 4 drives the rotating shaft 6 to rotate through the coupling 5. While the rotating shaft 6 is rotating, it drives the second gear 9 to rotate through the first gear 7. The diameter of the first gear 7 is smaller than that of the second gear 9. The first gear 7 rotates with a larger amplitude than the second gear 9. When the second gear 9 rotates, it drives the knife switch mechanism 101 to rotate inside the main body contact 1, thereby realizing different angle opening and closing to accurately control the action of the main body contact 1, improving the accuracy and practicality of the action control of the main body contact 1.

[0020] The support shaft 13 can mount the third gear 14, which can rotate outside the second gear 9. When the second gear 9 rotates, it drives the third gear 14 to rotate, so that the third gear 14 can limit the second gear 9 to prevent swaying. The protective cover 15, which is bolted to the outside of the mounting frame 3, is filled with sound insulation cotton. The protective cover 15 can protect the first gear 7, the second gear 9 and the third gear 14 on one side of the mounting frame 3 from dirt, dust and water, and extend their service life.

[0021] More specifically, the control unit includes a servo driver 10 electrically connected to the power supply terminal on one side of the servo motor 4, and the servo driver 10 is electrically connected to the controller 11.

[0022] Furthermore, the controller 11 is a PLC control device. It uses the servo motor 4 and the PLC control system to replace the ordinary motor of the original GIS knife switch mechanism 101, and precisely controls the rotation angle and stroke of the knife switch. The servo driver 10 collects the angle and number of steps of the servo motor 4 and feeds them back to the PLC, outputting the open and closed position of the knife switch. The open and closed position is realized by the rotation of the first gear 7 and the second gear 9.

[0023] Furthermore, the secondary wiring is cumbersome and prone to errors. After the improvement, only the power supply of the servo motor 4 and the communication line between the PLC controller 11 and the servo driver 10 need to be arranged, which simplifies the structure and wiring.

[0024] Working principle: First, the controller 11 controls the servo driver 10 to start, which in turn controls the motor 4 to start. The servo motor 4 can drive the rotating shaft 6 to rotate through the coupling 5. While the rotating shaft 6 is rotating, it drives the second gear 9 to rotate through the first gear 7. The diameter of the first gear 7 is smaller than that of the second gear 9. The first gear 7 rotates with a larger amplitude than the second gear 9. When the second gear 9 rotates, it drives the knife switch mechanism 101 to rotate within the body contact 1. This allows the knife switch mechanism 101 installed in the body contact 1 to open and close at different angles, thereby precisely controlling the action of the body contact 1.

[0025] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0026] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A power GIS disconnector control device, comprising the body contact (1) of the GIS disconnector contactor, characterized in that: The main body contact (1) includes four integrally formed flanges (2) for connection. An auxiliary component for controlling the opening and closing angle of the knife switch mechanism (101) for controlling the action of the main body contact (1) is installed on one side of the main body contact (1). A control component for controlling the action of the main body contact (1) is externally connected to the main body contact (1).

2. The power GIS disconnector control device according to claim 1, characterized in that: The auxiliary component includes a mounting bracket (3) installed on one side of the main body contact (1), a servo motor (4) is installed on one side of the mounting bracket (3), and the servo motor (4) is mounted with a rotating shaft (6) via a coupling (5).

3. The power GIS disconnector control device according to claim 2, characterized in that: The first gear (7) is fitted on the outside of the rotating shaft (6), and the second gear (9) is installed on the other side of the mounting bracket (3) through the fixed shaft (8). The first gear (7) meshes with the second gear (9).

4. The power GIS disconnector control device according to claim 3, characterized in that: The control unit includes a servo driver (10) electrically connected to the power supply terminal on one side of the servo motor (4), and the servo driver (10) is electrically connected to the controller (11).

5. A power GIS disconnector control device according to claim 2, characterized in that: A gasket (12) is laid on one side of the flange (2).

6. The power GIS disconnector control device according to claim 4, characterized in that: A support shaft (13) is installed on the other side of the mounting bracket (3). A third gear (14) for limiting is fitted on the outside of the support shaft (13). The second gear (9) meshes with the third gear (14).

7. A power GIS disconnector control device according to claim 6, characterized in that: The mounting bracket (3) is fitted with a protective cover (15) by bolts on the outside.

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