A processing method for bellows of arc extinguishing chamber

Abstract

The invention relates to the technical field of circuit breakers, and provides a processing method for a corrugated pipe in an arc extinguishing chamber, which can solve the problem that the corrugated pipe is prone to fatigue and cracking in the prior art. A method for processing bellows of an arc extinguishing chamber, comprising the following steps: placing a tube blank in a cavity of a hydroforming mold, and obtaining the bellows of an arc extinguishing chamber through a hydroforming process; the tube blank used in hydroforming is integral The tube blank whose wall thickness gradually increases from the static end to the dynamic end, so that the tube wall thickness of the arc extinguishing chamber corrugated pipe obtained by forming the tube blank gradually increases from the static end to the dynamic end; or, the tube blank used in hydroforming The tube blank is a tube blank whose wall thickness of at least one section gradually increases from the static end to the moving end, so that the tube wall thickness of the corresponding section of the corrugated pipe of the arc extinguishing chamber obtained by forming the tube blank gradually increases from the static end to the moving end. Increase.

Description

technical field [0001] The invention relates to the technical field of circuit breakers, in particular to a processing method for an arc extinguishing chamber bellows. Background technique [0002] As the core component of the circuit breaker, the vacuum interrupter's life and reliability are very important to the entire circuit breaker. The patent document with the authorization announcement number of CN206225281U and the authorization announcement date of 2017.06.06 discloses a magnetic interrupter for a high-voltage vacuum circuit breaker, which includes a ceramic shell, and the openings at both ends of the ceramic shell are respectively covered with a movable end cover and a static The end cover, the two end covers are respectively equipped with a moving conductive rod and a static conductive rod. The ends of the dynamic and static conductive rods that are close to each other are provided with a moving contact and a static contact. end components. The movable conductiv...

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Problems solved by technology

[0005] The object of the present invention is to provide a processing method for the corrugated pipe of the arc extinguishing chamber, the corrugated pipe of the arc extinguishing chamber obtained by this method can solve the problem that the corrugated pipe is easy to fatigue and crack in the prior art

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