Arc extinguishing device of circuit breaker

A technology of arc extinguishing device and circuit breaker, which is applied to circuit breaker parts and other directions, can solve the problems of poor arc extinguishing effect and long arc movement time, and achieve the effect of being beneficial to arc extinguishing, improving arc extinguishing effect and good economy.
CN103500692AInactive Publication Date: 2014-01-08CNC ELECTRIC GRP
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
CNC ELECTRIC GRP
Publication Date
2014-01-08
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention discloses an arc extinguishing device of a circuit breaker, and relates to the technical field of the circuit breaker. The arc extinguishing device is arranged in a circuit breaker casing, and comprises an arc extinguishing cover. The device is characterized in that the arc extinguishing cover is made of a three-surface enclosure vulcanized paper sheet with enlarged integral size, the interior of the arc extinguishing cover is provided with 14 arc striking plates which are used for separating electric arcs from cooling the electric arcs, the wire inlet end of the arc extinguishing device also comprises a connecting plate, the connecting plate is a triangular loop meeting a right hand rule, and each arc striking plate is provided with a Y-shaped opening with enlarged size to facilitate the electric arcs to enter. The arc extinguishing device has the advantages that the capability of separating the electric arcs from cooling the electric arcs is improved, the connecting plate at the wire inlet end adopts the triangular loop design meeting the right hand rule, a strong arc blowing magnetic field is always formed for alternating current, the electric arcs are forced to quickly enter an arc extinguishing chamber, the movement time of the electric arcs is shortened, and the arc extinguishing effect is greatly improved; the structure is simple, the economy is good, and the opening capability of the circuit breaker is obviously improved.
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Description

technical field

[0001] The invention relates to the technical field of circuit breakers, in particular to an arc extinguishing device of a circuit breaker. Background technique

[0002] The arc of the existing arc extinguishing device of the circuit breaker cannot quickly enter the arc extinguishing chamber, the arc movement time is long, and the arc extinguishing effect is poor. Contents of the invention

[0003] The object of the present invention is to provide an arc extinguishing device for a circuit breaker to solve the above-mentioned technical problems of long arc movement time and poor arc extinguishing effect.

[0004] In order to solve the above-mentioned technical problems, the technical solution adopted by the present invention is: an arc extinguishing device for a circuit breaker, which is installed in the circuit breaker housing and includes an arc extinguishing cover, and the arc extinguishing cover is enlarged in overall volume Surrounded by steel cardboar...

Claims

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