Arc-extinguishing load switch and switch equipment

A load switch and arc extinguishing technology, applied in electric switches, high-voltage/high-current switches, high-voltage air circuit breakers, etc., can solve problems such as limited arc extinguishing capacity, arc extinguishing failure, complex structure, etc., to reduce consumption and improve extinguishing Arc ability, size reduction effect

Active Publication Date: 2012-08-08
XIAMEN HUADIAN SWITCHGEAR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the three phases share the blade and one cavity, there are the following disadvantages: 1. The structure is complex and the cost is high; 2. The arc extinguishing ability is limited, which often leads to arc extinguishing failure.

Method used

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  • Arc-extinguishing load switch and switch equipment
  • Arc-extinguishing load switch and switch equipment
  • Arc-extinguishing load switch and switch equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0033] Please check Figure 1 to Figure 12 , arc extinguishing load switchgear, which includes a metal enclosed frame 60, an arc extinguishing load switch and a main bus 62; said metal enclosed frame 60 is filled with arc extinguishing gas, such as SF 6 ; The arc extinguishing load switch is installed in the metal enclosed frame 60 . The arc extinguishing load switch includes a base 10 fixed in a metal closed frame 60 and a three-phase switch assembly.

[0034] The base 10 includes a lower base 40 , an upper base 42 and two side frames 44 fixedly connected to the upper base 42 and the lower base 40 .

[0035] The three-phase switch assemblies are mounted on the base 10 and arranged side by side along the direction X. Each phase switch assembly includes an upper static contact assembly 14 , a lower static contact assembly 16 , a moving contact 18 and a grounding assembly 20 . The upper static contact assembly 14 includes an upper static contact 50 and an upper static contact ...

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PUM

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Abstract

The invention discloses an arc-extinguishing load switch which comprises a substrate and a three-phase switch assembly, wherein each-phase switch assembly is provided with an air cylinder and comprises an upper static contact assembly, a lower static contact assembly, a moving contact and a grounding assembly, wherein the lower part of the moving contact can be in conductive contact with the lower static contact assembly and is pivoted with the air cylinder to rotate among a closing position, an opening position and a grounding position. A part of the air cylinder corresponding to a part between the closing position and the grounding position is a sealed part; the moving contact is fixedly provided with a rotating piston; the rotating piston is provided with a through blowing nozzle; the sealed part is matched with the rotating piston to divide the air cylinder into a closed compression cavity and a release cavity; and when the moving contact rotates from the closing position to the opening position, gas in the compression cavity is compressed by the rotating piston firstly, and then is blown to an upper static contact for arc extinguishing. The arc-extinguishing load switch has the advantages of high arc-extinguishing capacity.

Description

technical field [0001] The invention relates to an arc extinguishing load switch and switchgear. Background technique [0002] The arc extinguishing load switch generally includes an insulating shell and a three-phase switch assembly enclosed in the insulating shell. Each phase switch assembly includes an upper static contact assembly, a lower static contact assembly, a moving contact and a grounding assembly. The upper static contact assembly is attached to the upper part of the insulating shell, and the lower static contact assembly is attached to In the lower part of the insulating shell, the grounding assembly is attached to the side of the insulating shell, and the lower part of the moving contact can electrically contact the lower static contact assembly and pivotally connect the insulating shell so as to be able to switch between the closing position, the opening position and the grounding position. Turning, the opening position is located between the closing positio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H33/91
Inventor 郑闽生吴良云张兴朗黄扬科
Owner XIAMEN HUADIAN SWITCHGEAR
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