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Gas-insulated switchgear and gas tank thereof

A technology of inflatable cabinets and air boxes, applied in electrical components, air switch parts, switchgear and other directions, can solve problems such as affecting the insulation of switch cabinets, and achieve the effect of being conducive to insulation, reducing electrical contact, and ensuring insulation requirements.

Pending Publication Date: 2022-04-15
PINGGAO GRP
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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 an air box for an inflatable cabinet to solve the technical problem that if there is a deviation in the opening position of the three-position switch in the prior art, the insulation of the switch cabinet will be affected

Method used

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  • Gas-insulated switchgear and gas tank thereof
  • Gas-insulated switchgear and gas tank thereof
  • Gas-insulated switchgear and gas tank thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] Such as figure 1 As shown, the inflatable cabinet includes a cabinet body, and the cabinet body has a pressure relief channel 11, a cable room 12, a busbar room 13, an instrument room 14, a mechanism room 15, and a gas box 16; the pressure relief channel 11 is mainly used for internal arcing and pressure relief. Incoming and outgoing cables and accessories are installed in the cable room 12, the main busbar is installed in the busbar room 13, the secondary control protection device is installed in the instrument room 14, and the operating mechanism is installed in the mechanism room 15.

[0054] Such as figure 2 with image 3 As shown, the gas box 16 includes a box body, and the top plate in the box is fixed with solid-sealed poles 24. There are three solid-sealed poles 24 arranged at intervals along the front and rear directions (ie, the depth direction of the cabinet), and the three solid-sealed poles 24 are all arranged vertically, the solid-sealed pole 24 has an ...

Embodiment 2

[0065] The difference between this embodiment and embodiment 1 is that in embodiment 1, the lower isolating static contact and the grounding static contact are integrally processed and formed, and are molded together in the insulator. In this embodiment, the lower isolating static contact and the grounding static contact are separately processed and formed, and the two are respectively cast and formed in two independent insulators, wherein the lower isolating static contact and the grounding static contact conduct electricity through the conductive row Connection, the bus bar can be connected to the lower isolation static contact or the grounding static contact. In other embodiments, based on the case where the lower isolating static contact and the grounding static contact are separately processed and formed, the two can be molded in the same insulator.

Embodiment 3

[0067] The difference between this embodiment and Embodiment 1 is that in Embodiment 1, the static grounding contact has a grounding socket opening facing the horizontal direction, and the moving grounding contact is a direct-acting moving contact that reciprocates along the horizontal direction. In this embodiment, the grounding static contact has a U-shaped slot, and the grounding static contact is a swing type moving contact.

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Abstract

The invention relates to a gas-insulated switchgear and a gas tank thereof, and the gas tank of the gas-insulated switchgear comprises a tank body, a solid-sealed polar pole is arranged in the tank body, the solid-sealed polar pole is vertically arranged, and the solid-sealed polar pole is provided with an upper wire outlet seat and a lower wire outlet seat; a lower isolation moving contact is assembled in the lower wire outlet seat along the vertical direction in a conductive sliding manner, a lower isolation static contact and a grounding static contact are arranged below the lower wire outlet seat in the box body, a lower isolation fracture is formed between the lower isolation moving contact and the lower isolation static contact, and the grounding static contact is in conductive connection with the lower isolation static contact; the bottom of the box body is provided with an incoming and outgoing line sleeve, the incoming and outgoing line sleeve is connected with a bus, and one of the grounding static contact and the lower isolation static contact is conductively and fixedly connected with the bus; a contact frame is further arranged in the box body, a grounding moving contact is assembled on the contact frame in a reciprocating motion mode, and a grounding fracture is formed between the grounding moving contact and the grounding static contact. Therefore, even if the transmission precision is low, the simultaneous insulation of the isolation fracture and the grounding fracture can be ensured, and the insulation requirement of the gas-insulated switchgear is further ensured.

Description

technical field [0001] The invention relates to an inflatable cabinet and an air box thereof, belonging to the field of power distribution switchgear. Background technique [0002] At present, the inflatable cabinets at home and abroad seal the main conductive circuits such as solid-sealed poles and three-position switches in a gas chamber filled with insulating gas. For example, the Chinese utility model patent with the authorized announcement number CN205452934U discloses an inflatable switchgear, including a gas box, which is equipped with a solid-sealed pole and a direct-acting three-position switch, and the solid-sealed pole has a moving outlet seat. And the static outlet seat, the three-position switch includes an isolated moving contact, an isolated static contact, and a grounding static contact; the static outlet seat is located on the upper part of the solid-sealed pole, and the static outlet seat is electrically connected to the isolated moving contact; Located in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02B13/035H02B13/00H01H31/02
Inventor 娄源通朱志豪冯祥伟朱彦卿王海燕卢健费翔孙河南翟停停李军辉
Owner PINGGAO GRP
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