JPH03116638U

JPH03116638U -

Info

Publication number: JPH03116638U
Application number: JP2510390U
Authority: JP
Priority date: 1990-03-14
Filing date: 1990-03-14
Publication date: 1991-12-03

Description

[Brief explanation of drawings]

第１図は本考案のガス開閉器の閉路状態を示す
断面図、第２図は第１図の開極動作途中を示す断
面図、第３図は従来のガス開閉器の開極動作途中
を示す断面図である。図において、１……固定接触子、３……可動接
触子、４……アーク、７……パツフア室、９……
シールド、１０……固定接触部、１１……ガス流
、である。 Fig. 1 is a sectional view showing the gas switch of the present invention in a closed state, Fig. 2 is a sectional view showing the opening operation in Fig. 1, and Fig. 3 is a sectional view showing the conventional gas switch in the middle of the opening operation. FIG. In the figure, 1... Fixed contact, 3... Movable contact, 4... Arc, 7... Patshua chamber, 9...
Shield, 10... Fixed contact part, 11... Gas flow.

Claims

[Scope of utility model registration request]

a fixed contact portion consisting of a fixed contact and a shield disposed surrounding the fixed contact; a hollow movable contact that moves linearly in the axial direction of the fixed contact and moves toward and away from the fixed contact; , comprising a puffer chamber communicating with the hollow part of the movable contact, and creating a gas flow flowing from the outside into the hollow part of the movable contact by making the inside of the puffer chamber negative pressure during the opening operation; In a gas switch that uses the gas flow to extinguish an arc generated between the fixed contact and the movable contact, the shield is formed so that the movable contact can slide in an almost airtight manner,
The interior of the fixed contact part, the hollow part of the movable contact communicating therewith, and the inside of the puffer chamber are kept almost airtight until the movable contact part almost comes out of the inside of the fixed contact part. A gas switch featuring: