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Gas generation and arc-extinguishing room of the breaker

A circuit breaker and arc extinguishing chamber technology, which is applied in the field of gas-generating arc extinguishing chambers for circuit breakers, can solve the problems of poor arc extinguishing effect and affect the reliability of equipment, and achieve the effect of improving the arc extinguishing effect.

Inactive Publication Date: 2007-08-01
DAQO GROUP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This structure only relies on the physical partition function of the arc extinguishing grid to cool down and extinguish the arc, and its arc extinguishing effect is poor, which affects the reliability of equipment operation

Method used

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  • Gas generation and arc-extinguishing room of the breaker
  • Gas generation and arc-extinguishing room of the breaker

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0008] As shown in the figure, the housing 1 of the gas-generating arc extinguishing chamber of the circuit breaker includes a bottom plate 11 and two side plates 12, an arc strike plate 2 is provided from the top of the housing to the front upper part, and there are multi-layer extinguishing plates in the inner cavity of the housing. Arc grid 3. At the entrance 13 close to the front end of the housing, a gas generating sheet 4 with a width of 30% to 40% of the longitudinal depth of the housing is arranged between the front section of the arc extinguishing grid and the front sections of the two side plates. In the above structure, the housing is made of plastic insulating material, the arc strike plate and the arc extinguishing grid are made of metal materials, and the gas generating sheet can be made of nylon 6 / 6, POM or melamine and other gas generating materials.

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PUM

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Abstract

The invention belongs to low voltage electric equipment, it relates to arc-chute structure of low voltage breaker, specially a breaker arc-chute. It includes shell, run-on plate and arc blow-out gate, the shell includes bottom plate and side plate, the run-on plate extends to the upper of the shell from top of the shell, several layers of arc blow-out gate are arranged in cavity formed by shell and the run-on plate, arc entrance is in front end of the shell, sheet-like gas producing beds produced by gas production material are set between the arc blow-out gate and two side plate which is near the arc entrance. The invention is simple, and the effect of arc blow-out is well.

Description

technical field [0001] The invention belongs to low-voltage electrical equipment, and relates to an arc-extinguishing chamber structure of a low-voltage circuit breaker, in particular to a gas-generating arc-extinguishing chamber for a circuit breaker. Background technique [0002] In ordinary low-voltage circuit breakers, the arc extinguishing chamber is generally composed of a shell, an arc extinguishing grid and an arc strike plate. The shell generally includes a bottom plate and side plates on both sides. Extending to the front upper part of the casing, multi-layer arc extinguishing grids are arranged from top to bottom in the cavity surrounded by the casing and the arc strike plate. During the working process, the arc generated by the contacts of the circuit breaker enters the inner cavity of the housing from the entrance at the front end of the housing, and passes through the multi-layer partition of the arc extinguishing grid to attenuate its energy and achieve the pu...

Claims

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Application Information

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IPC IPC(8): H01H73/18H01H33/70
Inventor 王靖王立强胡义琴刘建军
Owner DAQO GROUP CO LTD
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