Dynamic sealing device for middle/high voltage power switchgear

A power switch and dynamic sealing technology, applied in high voltage/high current switch, electric switch, engine sealing, etc., can solve problems such as poor sealing effect, casualties, power outages and electrical equipment

Active Publication Date: 2009-03-04
VIC FERROFLUIDICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing medium and high voltage power switchgear adopts the sealing method of rubber products or the sealing method of bellows for dynamic sealing, but the sealing effect is not good, which may easily lead to insulation accidents, large-scale power outages, electrical equipment accidents, and even casualties

Method used

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  • Dynamic sealing device for middle/high voltage power switchgear
  • Dynamic sealing device for middle/high voltage power switchgear
  • Dynamic sealing device for middle/high voltage power switchgear

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Embodiment Construction

[0026] The invention provides a dynamic sealing device for medium and high voltage power switchgear, which is used to meet the dynamic sealing requirements of the insulating medium of the medium and high voltage power switchgear.

[0027] The core of the present invention is to make the magnetic fluid form an "O"-shaped annular structure consistent with the number of magnetic pole teeth through the magnetic circuit composed of permanent magnets, magnetic poles and the main shaft, so as to achieve the purpose of sealing.

[0028] In order to enable those skilled in the art to better understand the solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0029] see figure 1 , which is a structural schematic diagram of the first embodiment of the dynamic sealing device of the present invention.

[0030] The dynamic sealing device for medium and high voltage power switchgear...

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Abstract

The invention discloses a dynamic sealing device which is used for a medium-and-high voltage power switchgear; the dynamic sealing device comprises a shell, a shell cover which is installed by coordinating with the shell, a principal axis which is arranged in the shell and is linked with an actuating mechanism inside an inflatable compartment as well as an operating mechanism outside the inflatable compartment, and at least one permanent magnet as well as two magnetic poles, which are installed by coordinating with the internal holes of the shell and have a gap with the principal axis; the two magnetic poles are respectively positioned at two sides of the permanent magnet; the magnetic pole is provided with a plurality of magnetic pole teeth; and magnetic fluid is arranged between the magnetic pole teeth and the principal axis. The invention provides a dynamic sealing device which is used for a medium-and-high voltage power switchgear and is also used for meeting the dynamic sealing requirements for the insulating medium of the medium-and-high voltage power switchgear.

Description

technical field [0001] The invention relates to a sealing device, in particular to a dynamic sealing device for medium and high voltage power switchgear. Background technique [0002] Medium and high voltage power switchgear is a key product in the entire power grid construction. From the point of view of the principle of electricity safety first, arcs will inevitably occur when medium and high voltage power switches are working, but arcs will lead to unsafe conditions and even major electrical accidents. [0003] In order to make medium and high voltage power switchgear arc extinguishing and insulating, human beings have tried various methods. Practice has proved that sulfur hexafluoride (SF 6 ) gas is internationally recognized as the most suitable inactive gas as an insulating medium, and the effect of arc extinguishing insulation is the best. Therefore, sulfur hexafluoride (SF 6 ) gas for arc extinguishing insulation. [0004] However, sulfur hexafluoride (SF) is st...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H33/53H01H33/64
CPCF16J15/43H01H33/53H01H33/42
Inventor 王功发言继春
Owner VIC FERROFLUIDICS
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