Arc extinguishing apparatus

A technology of arc extinguishing device and limit device, which is applied in the direction of electrical components, electric switches, circuits, etc., can solve the problems of weakened arc extinguishing ability, large volume of arc extinguishing device, high grid temperature, etc., and achieves enhanced arc extinguishing ability and improved The effect of frequent arc extinguishing ability and small size

Active Publication Date: 2018-08-17
XIAN KAITIAN RAILWAY ELECTRICAL
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

Due to the resistance, hysteresis and eddy current of the grid, the temperature of the grid is often high, and its arc extinguishing ability will be weakened when it is frequently operated; due to the limited voltage drop between the cathode and the anode, when the arc voltage is high When the number of metal grids required is large, the volume of the arc extinguishing device is often large

Method used

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Embodiment Construction

[0032] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0033] Such as figure 1 , Figure 2a with Figure 2b As shown, the arc extinguishing device provided by the present invention includes a side plate 1, a grid piece 2 made of an insulating material, a grid piece 2 3 made of a metal material, a protective plate 4 and an arc strike plate assembly 5; the side plate 1 can be For such figure 1 As shown in the shape of a cuboid with an opening on one side, the grid sheet 1 is connected to the inner wall of the side plate 1. The grid sheet 1 includes at least partitions 22 arranged at intervals, and a cavity is formed between two adjacent partitions 22. The grid sheet 2 3 Located in the space formed by the two grid pieces 1, the limit device 32 of the head of the grid piece 2 3 is located in the slot 23 of the grid piece 1 2, the protective plate 4 is located inside the side plate 1, the grid piec...

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Abstract

The invention discloses an arc extinguishing apparatus. The arc extinguishing apparatus includes a slide plate, wherein one side of the side plate is equipped with an opening, and an accommodation space is formed in the side plate; a grid piece 1 made of insulating material is arranged in the side plate; the grid piece 1 at least includes a plurality of separator plates side by side; a cavity is formed between every two adjacent separator plates; a grid piece 2 made of metal material is arranged in each cavity; and two sides of the grid piece 1 are each provided with one end tab assembly. Compared with a traditional arc extinguishing apparatus which fully employs ceramic grid pieces, the arc extinguishing apparatus has the advantages of reducing the quality of the arc extinguishing apparatus, reducing the overvoltage, reducing the cost, and reducing the failure rate. Compared with a traditional arc extinguishing apparatus which fully employs metal grid pieces, the arc extinguishing apparatus has the advantages of reducing the volume of the arc extinguishing apparatus, improving the frequent arc extinguishing capability, having both the advantages of the two traditional arc extinguishing apparatus, overcoming the defects of the two traditional arc extinguishing apparatus, being small in volume, being light in weight, and greatly improving the arc extinguishing capability throughcombination of the two arc extinguishing modes.

Description

technical field [0001] The invention belongs to the technical field of switching appliances, and in particular relates to an arc extinguishing device. Background technique [0002] At present, when the commonly used contact switch electrical appliances break the circuit, an arc will be generated between the two contacts. If the arc is not extinguished in time, it will cause delayed disconnection of the circuit, contact burnout, overvoltage breakdown and other failures. Therefore, Most switching appliances have arc extinguishing devices. [0003] Existing arc extinguishing devices are roughly divided into long arc arc extinguishing devices and short arc arc extinguishing devices according to arc extinguishing principles. The long-arc arc extinguishing device mainly uses the close contact between the arc and the insulating material, and uses the cooling effect and the surface composite effect to extinguish the arc. The long-arc arc extinguishing device is usually made of cer...

Claims

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Application Information

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IPC IPC(8): H01H9/34
CPCH01H9/34
Inventor 赵攀田启江曹俊飞
Owner XIAN KAITIAN RAILWAY ELECTRICAL
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