JPH048341U

JPH048341U -

Info

Publication number: JPH048341U
Application number: JP4956890U
Authority: JP
Priority date: 1990-05-11
Filing date: 1990-05-11
Publication date: 1992-01-24

Description

[Brief explanation of the drawing]

第１図及び第２図はそれぞれ本考案の実施例の
投入状態及び遮断状態を示す要部断面図、第３図
及び第４図は同実施例の動作過程を示す説明図、
第５図及び第６図はそれぞれ本考案の他の実施例
を示したもので、第５図は可動接触子が固定接触
子から離れた直後の状態を示した要部断面図、第
６図は可動接触子が遮断位置まで変位した状態を
示した要部断面図、第７図及び第８図はそれぞれ
従来のガス遮断器の投入状態及び遮断状態を示し
た要部断面図、第９図及び第１０図はそれぞれ従
来の他のガス遮断器の投入状態及び遮断状態を示
した要部断面図である。１……第１の主回路導体、２……固定接触子、
３……可動接触子、３０１……補助昇圧室、３０
１′……ガス通路、３０２……連通孔、４……筒
体、５……端部壁、６……昇圧室、７……ノズル
、８……第２の主回路導体、９……摺動接触子、
１０……アーク駆動コイル、１１……アークラン
ナ、１２，１３……端子、１５……昇圧室構成部
材、１６……補助昇圧室。 FIGS. 1 and 2 are sectional views of main parts showing the on state and the off state of the embodiment of the present invention, respectively; FIGS. 3 and 4 are explanatory diagrams showing the operation process of the embodiment;
5 and 6 respectively show other embodiments of the present invention, FIG. 5 is a sectional view of the main part showing the state immediately after the movable contact is separated from the fixed contact, and FIG. is a cross-sectional view of the main part showing a state in which the movable contactor has been displaced to the cut-off position, FIGS. 7 and 8 are cross-sectional views of the main part showing the conventional gas circuit breaker in the closing state and the cut-off state, respectively, and FIG. 9 and FIG. 10 are sectional views of main parts of other conventional gas circuit breakers showing the closed state and the closed state, respectively. 1... First main circuit conductor, 2... Fixed contact,
3...Movable contactor, 301...Auxiliary pressurization chamber, 30
1'... Gas passage, 302... Communication hole, 4... Cylindrical body, 5... End wall, 6... Boosting chamber, 7... Nozzle, 8... Second main circuit conductor, 9... sliding contact,
DESCRIPTION OF SYMBOLS 10... Arc drive coil, 11... Arc runner, 12, 13... Terminal, 15... Boosting chamber component, 16... Auxiliary boosting chamber.

Claims

[Claims for Utility Model Registration] (1) A pressurizing chamber, a nozzle provided on one wall of the pressurizing chamber for draining gas in the pressurizing chamber, and a fixed contact disposed within the pressurizing chamber. and,
a movable contact that is displaced between a closing position in which it contacts a fixed contact in the pressurizing chamber through the nozzle and a shut-off position in which it is separated from the fixed contact and detached from the nozzle; When an arc is generated between the movable contact and the arc, the heat of the arc increases the pressure in the pressurizing chamber, and when the movable contact detaches from the nozzle, the gas in the pressurizing chamber flows out from the nozzle. What is claimed is: 1. A gas circuit breaker that extinguishes an arc by: an auxiliary pressure boosting chamber having one end opened at a tip of the movable contact is provided within the movable contact. (2) a pressurizing chamber, a nozzle provided on one wall of the pressurizing chamber for causing gas in the pressurizing chamber to flow out, and a fixed contact disposed within the pressurizing chamber;
a movable contact that is displaced between a closing position in which it contacts the fixed contact through the nozzle and a shut-off position in which it is separated from the fixed contact and detached from the nozzle; When an arc is generated between the movable contact and the movable contact, the pressure in the pressurizing chamber is increased by the heat of the arc, and when the movable contact is detached from the nozzle, the gas in the pressurizing chamber is extinguished by flowing out from the nozzle. In the arcing gas circuit breaker, an auxiliary pressurizing chamber is provided to surround the movable contact, a gas passage is provided inside the movable contact, and one end of the gas passage is opened at the tip of the movable contact; A gas circuit breaker characterized in that a communication hole is provided on the other end side of the gas communication hole to allow the gas passage to communicate with the auxiliary pressure boosting chamber when the gas passage is shut off.