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Arc-extinguishing device suitable for switch cabinet

A technology of arc extinguishing device and switchgear, which is applied in the direction of electric switches, electrical components, circuits, etc., and can solve problems such as potential safety hazards, unfavorable arc entry, and large resistance

Inactive Publication Date: 2014-01-08
YIHE ELECTRIC GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The switchgear in the switch cabinet will generate a certain arc when it is switched off. If it cannot be extinguished in a timely and effective manner, it is likely to cause personal injury and pose a safety hazard.
In the prior art, the arc extinguishing chamber structure of the arc extinguishing grid is usually adopted. The arc extinguishing grids of the existing arc extinguishing grid are arranged longitudinally, and the ends of the arc extinguishing grids are neat, which makes the resistance of the arc entering the arc extinguishing device Relatively large, not conducive to arc entry

Method used

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  • Arc-extinguishing device suitable for switch cabinet

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Embodiment Construction

[0013] Below in conjunction with accompanying drawing and embodiment the present invention will be further described:

[0014] An arc extinguishing device suitable for switchgear, comprising: a supporting insulator 1, an arc extinguishing grid 3, an arc extinguishing grid 2, a rotating shaft 5 and a contact piece 4; the arc extinguishing grid 3 is fixed on the supporting insulator 1 by screws Above, the arc extinguishing grid frame 3 is provided with a number of slots, the bottom end of the arc extinguishing grid 2 is inserted into the slot and fixed, and at least one of the ends of the arc extinguishing grid 2 is not neatly arranged , the contact piece 4 is movably connected with the rotating shaft 5 .

[0015] The arc extinguishing grid 2 is made of magnetic A20 steel plate, and the surface is plated with copper.

[0016] The lower end of the contact piece 4 is in the shape of a 1 / 4 rounded corner.

[0017] The arc extinguishing method of the arc in this structure adopts m...

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Abstract

The invention discloses an arc-extinguishing device suitable for a switch cabinet. The arc-extinguishing device suitable for the switch cabinet is characterized by comprising a supporting insulator, an arc-extinguishing grid frame, arc-extinguishing grid sheets, a spindle and a wafer, wherein the arc-extinguishing grid frame is fixedly arranged on the supporting insulator by screws; the arc-extinguishing grid frame is provided with a plurality of clamping troughs; the bottom ends of the arc-extinguishing grid sheets are inserted into the clamping troughs to be fixed; at least one of the ends of the arc-extinguishing grid sheets is not tidily arranged; the wafer and the spindle are movably connected. The arc-extinguishing device suitable for the switch cabinet, which is disclosed by the invention, has the beneficial effects that the arc-extinguishing grid sheets are fixed by the clamping troughs, so distance among the arc-extinguishing grid sheets is reduced, the amount of the arc-extinguishing grid sheets is increased, the arc-extinguishing capability can be enhanced, and installation is firmer; the arc striking capability is increased by untidy arrangement of the ends of the arc-extinguishing grid sheets.

Description

technical field [0001] The invention relates to the field of power distribution switch cabinets, in particular to an arc extinguishing device suitable for switch cabinets. Background technique [0002] Whether at home or abroad, power transmission and distribution equipment of 50kV and below has become a terminal equipment that directly or basically directly faces users. Therefore, the stability and reliability of the normal operation of the switchgear are very high, and the regular maintenance of the switchgear The safety and convenience issues in the process of maintenance and commissioning put forward higher and more reliable requirements. [0003] The switchgear in the switch cabinet will generate a certain arc when it is switched off. If it cannot be extinguished in a timely and effective manner, it may cause personal injury and pose a safety hazard. In the prior art, the arc extinguishing chamber structure of the arc extinguishing grid is usually adopted. The arc exti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H9/34
Inventor 彭凤娟张世晓管竹青官敏朱纪芹刘立东
Owner YIHE ELECTRIC GRP
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