Electrical apparatus, filing apparatus and storage apparatus

Patent metadata

Field	Value
Publication number	US-12537151-B2
Application number	US-202318333912-A
Country	US
Kind code	B2
Filing date	Jun 13, 2023
Priority date	Dec 16, 2020
Publication date	Jan 27, 2026
Grant date	Jan 27, 2026

Abstract

An electrical apparatus have a grounded tank with a conductor at an inside thereof, in which:
the inside of the grounded tank is filled with insulating arc-extinguishing gas; the insulating arc-extinguishing gas is confined in the grounded tank by a sealing member; the insulating arc-extinguishing gas includes at least one selected from the group consisting of a hydrofluoroolefin having 3 or 4 carbon atoms and a hydrochlorofluoroolefin having 3 or 4 carbon atoms; and the sealing member includes at least one selected from the group consisting of an ethylene propylene rubber, an isobutylene-isoprene rubber, a chloroprene rubber, a natural rubber, a nitrile rubber, a hydrogenated nitrile rubber, an urethane rubber, a chlorosulfonated polyethylene rubber, a vinylidene fluoride based fluororubber, a tetrafluoroethylene-perfluorovinylether based rubber and a polytetrafluoroethylene.

First claim

The invention claimed is:

1 . An electrical apparatus comprising a grounded tank having a conductor at an inside thereof, wherein:
the grounded tank is filled inside with an insulating arc-extinguishing gas; an atmosphere around the conductor in the grounded tank is filled with the insulating arc-extinguishing gas; the insulating arc-extinguishing gas is confined in the grounded tank by a first grounded tank sealing member; the insulating arc-extinguishing gas comprises 1-chloro-2,3,3,3-tetrafluoropropene; and the grounded tank sealing member comprises at least one of an ethylene propylene rubber, an isobutylene-isoprene rubber, a chloroprene rubber, a natural rubber, a nitrile rubber, a hydrogenated nitrile rubber, an urethane rubber, a chlorosulfonated polyethylene rubber, a vinylidene fluoride based fluororubber, a tetrafluoroethylene-perfluorovinylether based rubber and a polytetrafluoroethylene.

2 . The electrical apparatus according to claim 1 , wherein the insulating arc-extinguishing gas further comprises at least one diluent gas selected from He, Ar, CO 2 , N 2 , O 2 , N 2 O, CH 4 and air.

3 . The electrical apparatus according to claim 1 , wherein the grounded tank sealing member comprises at least one of the hydrogenated nitrile rubber, the vinylidene fluoride based fluororubber, the tetrafluoroethylene-perfluorovinylether based rubber and the polytetrafluoroethylene.

4 . A filling apparatus for filling an insulating arc-extinguishing gas into the grounded tank of the electrical apparatus according to claim 1 , wherein:
the insulating arc-extinguishing gas is confined in the filling apparatus by a filling apparatus sealing member; the insulating arc-extinguishing gas comprises 1-chloro-2,3,3,3-tetrafluoropropene; and the filling apparatus sealing member comprises at least one of an ethylene propylene rubber, an isobutylene-isoprene rubber, a chloroprene rubber, a natural rubber, a nitrile rubber, a hydrogenated nitrile rubber, an urethane rubber, a chlorosulfonated polyethylene rubber, a vinylidene fluoride based fluororubber, a tetrafluoroethylene-perfluorovinylether based rubber and a polytetrafluoroethylene.

5 . The filling apparatus according to claim 4 , wherein the insulating arc-extinguishing gas further comprises at least one diluent gas selected from He, Ar, CO 2 , N 2 , O 2 , N 2 O, CH 4 and air.

6 . The filling apparatus according to claim 4 , wherein the filling apparatus sealing member comprises at least one of the hydrogenated nitrile rubber, the vinylidene fluoride based fluororubber, the tetrafluoroethylene-perfluorovinylether based rubber and the polytetrafluoroethylene.

7 . A storage apparatus for storing an insulating arc-extinguishing gas to be filled in the grounded tank of the electrical apparatus according to claim 1 , wherein:
the insulating arc-extinguishing gas is confined in the storage apparatus by a storage apparatus sealing member; the insulating arc-extinguishing gas comprises 1-chloro-2,3,3,3-tetrafluoropropene; and the storage apparatus sealing member comprises at least one of an ethylene propylene rubber, an isobutylene-isoprene rubber, a chloroprene rubber, a natural rubber, a nitrile rubber, a hydrogenated nitrile rubber, an urethane rubber, a chlorosulfonated polyethylene rubber, a vinylidene fluoride based fluororubber, a tetrafluoroethylene-perfluorovinylether based rubber and a polytetrafluoroethylene.

8 . The storage apparatus according to claim 7 , wherein the insulating arc-extinguishing gas further comprises at least one diluent gas selected from He, Ar, CO 2 , N 2 , O 2 , N 2 O, CH 4 and air.

9 . The storage apparatus according to claim 7 , wherein the storage apparatus sealing member comprises at least one of the hydrogenated nitrile rubber, the vinylidene fluoride based fluororubber, the tetrafluoroethylene-perfluorovinylether based rubber and the polytetrafluoroethylene.

Assignees

• Agc Inc

Inventors

• Hayamizu Hiroki
• Chinsoga Tamaki
• Fukushima Masato

Classifications

• H01H2223/002

  sealed · CPC title

• H01H2033/566

  Avoiding the use of SF6 · CPC title

• H01H33/22

  Selection of fluids for arc-extinguishing · CPC title

• H01H11/00

  Apparatus or processes specially adapted for the manufacture of electric switches (processes specially adapted for manufacture of rectilinearly movable switches having a plurality of operating members associated with different sets of contacts, e.g. keyboards, H01H13/88) · CPC title

• H01H33/56 Primary

  Gas reservoirs · CPC title