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Arc-extinguishing commutation switch and manufacture method thereof

A technology for commutation switches and manufacturing methods, which is applied to high-voltage/high-current switches, electric switches, high-voltage air circuit breakers, etc., and can solve the problems of failing to meet the needs of production, burning out arc switches, and failing to ensure short-circuit connection between columns and short-circuit blocks and other problems, to achieve the effect of reliable contact, large contact area and small arc

Active Publication Date: 2009-12-23
GUIYANG AL-MG DESIGN & RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to safely realize the stop and slotting without power failure or current reduction, an arc extinguishing switch can be installed between the column and the short circuit block, but the current allowed by the general arc extinguishing switch is far from being suitable for the tens of thousands in the production of electrolytic aluminum. The requirement of ampere DC current will cause the arc-extinguishing switch to burn out, or there is still a high potential between the column and the short-circuit block after a short circuit, which cannot guarantee the safe short-circuit connection of the column and the short-circuit block
Therefore, the existing arc-extinguishing commutator switch still cannot meet the needs of production.

Method used

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  • Arc-extinguishing commutation switch and manufacture method thereof
  • Arc-extinguishing commutation switch and manufacture method thereof

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Embodiment Construction

[0014] Embodiments of the present invention: the manufacturing method of the arc-extinguishing commutation switch of the present invention is as follows figure 1 shown. The method is to use a piece of high-conductivity cubic material as the static contact base 1, and weld a static main contact 2 and a static arc contact 3 on the same surface of the static contact base 1; the model is 3240 Or N350 epoxy phenolic pressed glass cloth board to make an arc extinguishing cover 4, cover the arc extinguishing cover 4 outside the static main contact 2 and the static arc contact 3, the edge of the arc extinguishing cover 4 and the static contact base For fixed connection, make a crimping surface 5 on the other side of the static contact base 1. The crimping surface 5 is used for crimping with the column 15 of the aluminum electrolytic cell. The crimping surface 5 should be higher than the arc extinguishing cover 4. The bottom plane is exposed outside the arc chute 4; in order to ensure...

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Abstract

The invention discloses an arc-extinguishing commutation switch and a manufacture method thereof. The method comprises the following steps: making a static contact base by a cubic material with high conductivity; respectively welding a static main contact and a static arc contact on the static contact base; covering an arc-extinguishing cover outside the static main contact and the static arc contact and exposing the pressing surface of the static contact base outside the arc-extinguishing cover; mounting a magnetic pushing mechanism on an arc-extinguishing cover plane corresponding to the static contact base; and hinging a movable main contact and a movable arc contact on a pushing rod of the magnetic pushing mechanism. The arc-extinguishing commutation switch made by the method bears a great current and has a small electric arc in closing and switching off the switch; low electric potential at both ends of the switch after being switched off can satisfy the need for safely connecting the upright column and the short-circuited block when an electrolytic tank is stopped or opened.

Description

technical field [0001] The invention relates to an arc-extinguishing commutation switch and a manufacturing method thereof, and belongs to the technical field of DC large current switches. Background technique [0002] In the production of electrolytic aluminum, multiple electrolytic cells are used as electrical loads and connected in series to a low-voltage and high-current DC power supply. As we all know, in a series circuit, when one of the loads is disconnected, the other loads will not work properly due to power failure. Due to the special requirements of electrolyzers, one or more electrolyzers need to be stopped for overhaul on a regular basis. In order not to affect the normal operation of other electrolyzers when a certain electrolyzer is stopped, design There is a short-circuit bus in parallel with the electrolyzer. The short-circuit bus realizes current switching by closing and disconnecting the column and the short-circuit block. Since the power supply of the ...

Claims

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Application Information

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IPC IPC(8): H01H11/00H01H33/04H01H33/12
Inventor 曹斌杨涛
Owner GUIYANG AL-MG DESIGN & RES INST
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