Title:
GAS CIRCUIT BREAKER
Document Type and Number:
WIPO Patent Application WO/2019/106841
Kind Code:
A1
Abstract:
Provided is a gas circuit breaker capable of suppressing mechanical vibrations at the time of movement of a moving electrode, reducing occurrence of triple junction and appearance of metallic foreign matter during operation of the gas circuit breaker, and more reliably maintaining electric insulation performance. The gas circuit breaker comprises: a first arc contactor 21; a cylindrical second arc contactor 41; a rod-shaped trigger electrode 31 that is disposed to be movable between the first arc contactor 21 and the second arc contactor 41, and moves inside the cylindrical second arc contactor 41 to ignite an arc at the second arc contactor 41 in the latter half of the current break interval; and a guide portion 41b that has an inner diameter larger than the outer diameter of the trigger electrode 31, has an inner diameter smaller than the inner diameter of a portion of the second arc contactor 41 which is close to the trigger electrode 31, and is disposed in the cylinder of the second arc contactor 41 so as to go around the trigger electrode 31 when the trigger electrode 31 is in a closed state with the first arc contactor 21.
Inventors:
UCHII TOSHIYUKI (JP)
YOSHINO TOMOYUKI (JP)
ISHII TAKATO (JP)
SHIMAMURA AKIRA (JP)
TANAKA TSUTOMU (JP)
YOSHINO TOMOYUKI (JP)
ISHII TAKATO (JP)
SHIMAMURA AKIRA (JP)
TANAKA TSUTOMU (JP)
Application Number:
PCT/JP2017/043343
Publication Date:
June 06, 2019
Filing Date:
December 01, 2017
Export Citation:
Assignee:
TOSHIBA KK (JP)
TOSHIBA ENERGY SYSTEMS & SOLUTIONS CORP (JP)
TOSHIBA ENERGY SYSTEMS & SOLUTIONS CORP (JP)
International Classes:
H01H33/915
Foreign References:
| JP2015079635A | 2015-04-23 | |||
| JP2003187681A | 2003-07-04 | |||
| JPH1031945A | 1998-02-03 |
Attorney, Agent or Firm:
KIUCHI, Mitsuharu (JP)
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