800 kv GIS high parameter fast grounding switch

Abstract

The utility model relates to a kind of 800 kV GIS high parameter quick grounding switch, its structure is: pot-type insulator is respectively equipped in the both sides of tank body, the pot-type insulator of one side is connected contact, the pot-type insulator of the other side is connected conductor, it is connected between contact and conductor by coupling piece, coupling piece is equipped with quick grounding switch static contact;Electric spring operating mechanism matched with quick grounding switch is installed in the upper of tank body by support platform;The output shaft of electric spring operating mechanism is connected external connecting rod mechanism, the output end of external connecting rod mechanism is connected with the internal transmission mechanism of grounding switch, the output end of internal transmission mechanism drives quick grounding switch moving contact up and down action;When moving contact moves to closing position, insert static contact.The quick grounding switch is linked by external connecting rod mechanism and internal transmission mechanism, realizes quick grounding switch moving contact fast up and down action, to improve the safety and reliability of grounding switch.

Description

Technical Field

[0001] This utility model relates to an 800 kV GIS high-parameter fast grounding switch, belonging to the technical field of high voltage, ultra-high voltage and extra-high voltage switchgear. Background Technology

[0002] With the expansion of power grids and the increase in voltage levels, the amount of GIS equipment in operation is increasing, and the requirements for the equipment are also constantly rising. As an important power safety device, the main function of a fast grounding switch is to quickly ground the circuit when needed. When a power system fault occurs or maintenance is required, operating the fast grounding switch can quickly connect the circuit to the earth, allowing the charge in the circuit to be released rapidly, thereby preventing electric shock accidents.

[0003] Therefore, improving the parameters of 800 kV GIS fast grounding switches can enhance the safety and reliability of the power grid, ensure the safety of maintenance personnel, enhance the performance and lifespan of equipment, and meet the stringent requirements of the power grid for "high parameters, long lifespan, and high intelligence" of equipment. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to provide an 800 kV GIS high-parameter fast grounding switch. This fast grounding switch achieves rapid up and down movement of the moving contact through the linkage between the external linkage mechanism and the internal transmission mechanism, thereby improving the safety and reliability of the grounding switch.

[0005] To solve the above problems, the specific technical solution of this utility model is as follows: An 800 kV GIS high-parameter fast grounding switch, characterized in that: basin-type insulators are respectively provided on both sides of the tank body, one basin-type insulator is connected to a contact, and the other basin-type insulator is connected to a conductor. The contact and the conductor are connected by a connecting member, and the connecting member is provided with a stationary contact of the fast grounding switch; the fast grounding switch is connected to the tank body flange through the insulator, and the moving contact of the fast grounding switch is short-circuited to the outer shell of the tank body through a grounding plate; the electric spring operating mechanism used with the fast grounding switch is installed above the tank body through a support platform; the output shaft of the electric spring operating mechanism is connected to an external linkage mechanism, and the output end of the external linkage mechanism is connected to the internal transmission mechanism of the grounding switch. The output end of the internal transmission mechanism drives the moving contact of the fast grounding switch to move up and down; when the moving contact moves to the closed position, it inserts into the stationary contact.

[0006] The external linkage mechanism consists of two clamping forks and a connecting rod that are hinged end to end in sequence. The first clamping fork is connected to the output shaft of the electric spring operating mechanism, and the last clamping fork is connected to the input end of the internal transmission mechanism of the grounding switch.

[0007] The internal transmission mechanism includes an operating crank arm and a reverse crank arm. One end of the operating crank arm is hinged to the output shaft of the external linkage mechanism, and the other end is inclined and hinged to the middle of the reverse crank arm. One end of the reverse crank arm is hinged to the top of the moving contact of the quick grounding switch, and the other end is provided with a slide rod. The grounding switch is provided with a horizontal guide slide, and the slide rod slides in cooperation with the horizontal slide.

[0008] The stationary and moving contacts of the fast grounding switch are made of a new alloy material, which enables the grounding switch to meet the following requirements: rated electromagnetic induction current of 1000 A, rated electromagnetic induction voltage of 70 kV, rated electrostatic induction current of 50 A, and rated electrostatic induction voltage of 130 kV.

[0009] The 800 kV GIS high-parameter fast grounding switch of this application adopts the above structure and has the following advantages: 1. An electric spring operating mechanism is used as the power mechanism, and the internal transmission mechanism of the grounding switch is controlled by an external transmission mechanism, so that the fast grounding switch of this application has the mechanical characteristics of long life and high performance. 2. The transmission system is composed of an external transmission mechanism and an internal transmission mechanism. The external transmission mechanism consists of a clamping fork and a connecting rod, while the internal transmission mechanism consists of a reverse crank arm, an operating crank arm, and a sliding rod. This enables the moving contact of the fast grounding switch of this application to be stably and reliably inserted into the stationary contact to a sufficient depth, ensuring reliable contact between the moving and stationary contacts and preventing adverse effects from electric force. 3. The fast grounding switch of this application can improve the safety and reliability of the power grid, ensure the safety of maintenance personnel, and enhance the performance and lifespan of equipment; 4. The moving and stationary contacts are made of a new alloy material, which gives the fast grounding switch of this application high electrical performance parameters and a stronger ability to cut off electromagnetic induction current and electrostatic induction current of the line. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the main view structure of this application.

[0011] Figure 2 This is a top view of the upper control section of this application.

[0012] Figure 3 for Figure 2 AA cross-sectional view (open state).

[0013] Figure 4 for Figure 2 AA cross-sectional view (closed state). Detailed Implementation

[0014] like Figures 1 to 4As shown, an 800 kV GIS high-parameter fast grounding switch has basin-type insulators 6 on both sides of the tank body 3. One basin-type insulator 6 is connected to a contact 10, and the other basin-type insulator 6 is connected to a conductor 4. The contact 10 and the conductor 4 are connected by a connecting member 11, and the connecting member 11 is equipped with a stationary contact 12 of the fast grounding switch. The fast grounding switch 1 is connected to the flange of the tank body 3 through an insulator 8, and the moving contact 13 of the fast grounding switch is short-circuited to the outer shell of the tank body 3 through a grounding plate 7. The electric spring operating mechanism 5 used with the fast grounding switch 1 is installed above the tank body 3 through a support platform. The output shaft of the electric spring operating mechanism 5 is connected to an external linkage mechanism 2. The output end of the external linkage mechanism 2 is connected to the internal transmission mechanism of the grounding switch 1. The output end of the internal transmission mechanism drives the moving contact 13 of the fast grounding switch to move up and down. When the moving contact 13 moves to the closed position, it inserts into the stationary contact 12.

[0015] The aforementioned external linkage mechanism 2 is composed of two clamping forks and a connecting rod that are hinged end to end in sequence. The first clamping fork is connected to the output shaft of the electric spring operating mechanism 5, and the last clamping fork is connected to the input end of the internal transmission mechanism of the grounding switch 1.

[0016] The aforementioned internal transmission mechanism includes an operating crank arm 21 and a reverse crank arm 22. One end of the operating crank arm 21 is hinged to the output shaft of the external linkage mechanism 2, and the other end is inclined and hinged to the middle of the reverse crank arm 22. One end of the reverse crank arm 22 is hinged to the top of the moving contact 13, and the other end is provided with a slide rod 23. A horizontal guide slide is provided inside the grounding switch 1, and the slide rod 23 slides in cooperation with the horizontal guide slide.

[0017] The stationary contact 12 and the moving contact 13 of the fast grounding switch are made of a new alloy material, which enables the grounding switch to meet the rated electromagnetic induction current of 1000 A and the rated electromagnetic induction voltage of 70 kV; the rated electrostatic induction current of 50 A and the rated electrostatic induction voltage of 130 kV.

[0018] like Figure 3 and Figure 4 As shown, the working process of the fast grounding switch of this application is as follows: when the stationary contact is in the open position, the connecting rod of the internal transmission mechanism tilts to the left, the operating crank arm 21 is located at an angle above, and the reverse crank arm 22 supports the moving contact in the open position; when the electric spring operating mechanism 5 closes, the internal transmission mechanism rotates clockwise, the operating crank arm 21 rotates clockwise, the slide rod 23 moves to the left along the horizontal guide slide, the reverse crank arm 22 moves counterclockwise, and the moving contact 13 moves vertically downward, so that the moving contact is inserted into the stationary contact 12, the fast grounding switch closes, and the grounding action of the line is completed.

Claims

1. An 800 kV GIS high-parameter fast grounding switch, characterized in that: Basin-type insulators (6) are provided on both sides of the tank body (3). One basin-type insulator (6) is connected to the contact (10), and the other basin-type insulator (6) is connected to the conductor (4). The contact (10) and the conductor (4) are connected by a connector (11). The connector (11) is provided with a stationary contact (12) of a fast grounding switch. The fast grounding switch (1) is connected to the flange of the tank body (3) through an insulator (8). The moving contact (13) of the fast grounding switch is short-circuited to the outer shell of the tank body (3) through a grounding plate (7). The electric spring operating mechanism (5) used with the fast grounding switch (1) is installed above the tank body (3) through a support platform. The output shaft of the electric spring operating mechanism (5) is connected to an external linkage mechanism (2). The output end of the external linkage mechanism (2) is connected to the internal transmission mechanism of the grounding switch (1). The output end of the internal transmission mechanism drives the moving contact (13) of the fast grounding switch to move up and down. When the moving contact (13) moves to the closed position, it inserts into the stationary contact (12).

2. The 800 kV GIS high-parameter fast grounding switch according to claim 1, characterized in that: The external linkage mechanism (2) is formed by two clamping forks and a connecting rod being hinged together end to end. The first clamping fork is connected to the output shaft of the electric spring operating mechanism (5), and the last clamping fork is connected to the input end of the internal transmission mechanism of the grounding switch (1).

3. The 800 kV GIS high-parameter fast grounding switch according to claim 1, characterized in that: The internal transmission mechanism includes an operating crank arm (21) and a reverse crank arm (22). One end of the operating crank arm (21) is hinged to the output shaft of the external linkage mechanism (2), and the other end is inclined and hinged to the middle of the reverse crank arm (22). One end of the reverse crank arm (22) is hinged to the top of the moving contact (13) of the quick grounding switch, and the other end is provided with a slide rod (23). The grounding switch (1) is provided with a horizontal guide slide, and the slide rod (23) slides in cooperation with the horizontal slide.

4. The 800 kV GIS high-parameter fast grounding switch according to claim 1, characterized in that: The stationary contact (12) and moving contact (13) of the fast grounding switch are made of a new alloy material, so that the rated electromagnetic induction current of the grounding switch meets 1000 A, the rated electromagnetic induction voltage meets 70 kV, the rated electrostatic induction current meets 50 A, and the rated electrostatic induction voltage meets 130 kV.

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