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Grounding switch for GIS

A grounding switch and grounding bar technology, which is applied in the direction of electric switches, air switch components, electrical components, etc., can solve the problems of complex structure of moving contacts and high installation cost of static contacts, and achieve simple structure, low cost, and reduced volume effect

Pending Publication Date: 2022-04-08
HENAN PINGGAO ELECTRIC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a grounding switch for GIS to solve the technical problems of the prior art that the moving contact structure is relatively complex and the installation cost of the static contact is high in the grounding switch

Method used

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  • Grounding switch for GIS
  • Grounding switch for GIS

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The grounding switch for GIS of the present invention is suitable for GIS equipment in ultra-high voltage power stations. In this example, if figure 1 As shown, the grounding switch for GIS includes a housing 11 with a mounting hole 23, a static end structure fixed at the mounting hole 23 and a moving contact (not shown in the figure) located in the housing 11. The housing 11 has a set There is a protruding ring 22 at the mounting hole 23 and coaxial with the mounting hole 23. In this embodiment, the movable contact is a conductive rod.

[0037] In this example, if figure 1 As shown, the static end structure includes a cover plate and a grounding bar 13. The cover plate is integrally formed by casting. The cover plate includes a plate body 12 outside the housing 11 and a conductive sleeve 21 on the side of the plate body 12 facing the mounting hole 23. Conductive The sleeve 21 extends along the axial direction of the installation hole 23 and is fitted in the installat...

Embodiment 2

[0044] The difference between this embodiment and Embodiment 1 is that in this embodiment, no grounding bump is provided on the board body, and the grounding bar is fixed on the side of the board body away from the mounting hole, and the board body is provided with a Counterbore for the bolt head of the connecting bolt to the boss.

Embodiment 3

[0046] The difference between this embodiment and Embodiment 1 is that in this embodiment, the distance between the bolt and the center of the cover plate is smaller than the distance between the grounding bump and the center of the cover plate. In other embodiments, the distance between the bolt and the center of the cover plate is equal to the distance between the grounding protrusion and the center of the cover plate, and the grounding protrusion and the bolt are distributed at different circumferential positions.

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Abstract

The invention relates to a grounding switch for a GIS. The grounding switch for the GIS comprises a shell with a mounting hole and further comprises a static end structure and a moving contact, the static end structure comprises a cover plate and a grounding bar, the cover plate comprises a plate body located outside the shell and a conductive sleeve which is located on the side, facing the mounting hole, of the plate body and extends into the shell, the cover plate and the conductive sleeve are of an integrated structure, the outer edge of the plate body is detachably fixed to the shell, and the moving contact is fixed to the outer edge of the plate body. An insulating plate is arranged between the outer edge of the plate body and the shell, the conductive sleeve extends into the mounting hole, an inner hole of the conductive sleeve forms a jack for inserting the moving contact, a contact finger for conducting the cover plate and the moving contact is mounted on the inner wall of the jack, and two ends of the grounding bar are respectively and conductively connected with the cover plate and the shell. The insulating plate is arranged between the plate body and the shell, and the insulating plate is simple in structure and convenient to process, so that the mounting cost of the static contact is reduced; the contact finger is installed in the jack of the conductive sleeve, the cover plate is in electric conduction with the moving contact through the contact finger, the moving contact does not need to be provided with the contact finger and a contact finger seat, and the structure of the moving contact is simplified.

Description

technical field [0001] The invention belongs to power system equipment, in particular to a grounding switch for GIS. Background technique [0002] The grounding switch is a mechanical switch device used to ground the circuit. Under abnormal conditions (such as short circuit), it can carry the specified abnormal current within the specified time. The grounding switch is an important module on the GIS equipment. [0003] The existing grounding switch includes a shell, a static end structure and a moving end structure. The moving end structure includes a moving contact, and the moving contact is equipped with a contact finger seat, and a spring contact finger is installed at the inner hole of the contact finger seat. The electrical connection is realized through the spring contact fingers and the static contacts. Since the moving contacts need to be equipped with contact finger holders, the overall structure of the moving contacts is relatively complicated. The static end stru...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H31/02H01H9/02
Inventor 张皓祺刘超峰占小猛薛红涛朱传运董斌卢杰王小东张黛鸣李伟强黄鑫秦泳赵文文张振飞李瑞耸
Owner HENAN PINGGAO ELECTRIC