Title:
SPRAY GAS TYPE MIDDLE-AND HIGH-VOLTAGE BREAKER
Document Type and Number:
Japanese Patent JP2562098
Kind Code:
B2
Abstract:
PURPOSE: To simplify the manufacture of a breaker, and also lighten the movable device of the breaker, by providing a function for preventing possible excess pressure in a volume part included between two pistons when the breaker is circuit-closed.
CONSTITUTION: A ring 40 is provided for avoiding excess pressure in a volume part V2 included between a first piston composed of a ring 13A provided with a valve 13B and a piston 14 when a breaker is circuit-closed. The ring 40 has sufficient width for closing an orifice 10A when the breaker is at a closed circuit position, also a diameter near to the inner diameter of a cylinder 8B, and carries spherical projection parts 40A and 40B so as to be frictional light to the inside of the cylinder 8B and slidable. Excess pressure in the volume part V2 can be avoided because the ring 40 is driven by the piston 14 to be elevated at the time of the closed circuit of the breaker, and the orifice 10A remains in open until the finish of its operation. Thus can simplify the structure of the breaker, and also lighten the movable device of the breaker.
Inventors:
MISHERU PERE
Application Number:
JP19847592A
Publication Date:
December 11, 1996
Filing Date:
July 24, 1992
Export Citation:
Assignee:
ALSTHOM GEC
International Classes:
H01H33/91; H01H33/90; H01H33/915; (IPC1-7): H01H33/91
Domestic Patent References:
| JP55114942U |
Other References:
【文献】 仏国特許公開2641409(FR,A)
Attorney, Agent or Firm:
Yoshio Kawaguchi (3 outside)