A self-operating vacuum interrupter and its self-operating method

Abstract

The invention discloses an automatic operating vacuum arc extinguish chamber and an automatic operating method thereof. The vacuum arc extinguish chamber comprises a static conductive rod, a movable conductive rod, a static contact, a movable contact, an arc extinguish chamber housing, a shielding cover, a flexible conductor, a main circuit terminal, a gate-opening driving coil, a magnetic repulsion disk, a gate-closing driving coil and a bistable retention structure. The invention discloses an automatic operating method of the automatic operating vacuum arc extinguish chamber. A conventional arc extinguish chamber and an operation mechanism are integrated to greatly reduce the part number and size of the operation mechanism and operation power of the mechanism. A bellows structure of a conventional arc extinguish chamber is eliminated, and the automatic operating vacuum arc extinguish chamber has the advantages of simple structure, compactness, long service lifetime and low cost.

Description

technical field [0001] The invention relates to a vacuum interrupter, in particular to a self-operating vacuum interrupter and a self-operating method thereof. Background technique [0002] Vacuum interrupter, also known as vacuum switching tube, is a key component of medium and high voltage power switches. Its main function is to quickly extinguish the arc and suppress the current after the medium and high voltage circuits are cut off through the excellent insulation of the vacuum inside the tube, so as to avoid accidents and Accidents happen. Vacuum interrupters are mainly used in power transmission and distribution control systems, which have the advantages of fire prevention, explosion protection, small size, long life, low maintenance costs, reliable operation and no pollution. [0003] At present, vacuum circuit breakers mainly use operating mechanisms such as spring mechanisms, permanent magnet mechanisms, and electromagnetic repulsion mechanisms. These mechanisms a...

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Problems solved by technology

[0005] The main purpose of the present invention is to overcome the shortcomings of the operating mechanism being easily damaged, inconvenient to install, and inconvenient to debug, and propose a self-operating vacuum interrupter and its self-operating method. The vacuum interrupter replaces the traditional The arc chamber and the operating mechanism are integrated, which greatly reduces the number and volume of parts of the operating mechanism, reduces the operating work of the mechanism, and also saves the bellows structure of the traditional arc extinguishing chamber. The invention has a structural Simple, compact, long life, low cost and other advantages

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