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Vacuum arc-extinguishing chamber

A vacuum interrupter and guide sleeve technology, applied in high-voltage air circuit breakers, electrical components, electrical switches, etc., can solve the problems of decreased mechanical life of products, sprained bellows, broken bellows, etc., and achieves low cost and reliable welding. , the effect of simple operation

Active Publication Date: 2016-04-06
XIAMEN HONGFA ELECTRIC POWER CONTROLS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the process of installing the vacuum interrupter into the power distribution control system and using it, the relative rotation of the guide sleeve occurs because the positioning ring of the guide sleeve and the socket part of the guide sleeve are circular, which may easily cause the bellows to be sprained and cause the bellows to be elastic. Plastic deformation reduces the mechanical life of the product, and may even cause the bellows to rupture and the product to be scrapped

Method used

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Effect test

Embodiment 1

[0034] see Figure 1 to Figure 11 As shown, a vacuum interrupter of the present invention includes a movable conductive rod 1, a movable end sealing ring 2 adapted to the movable conductive rod, a guide sleeve 3 and a fixed ring 4, the guide sleeve 3 and the fixed ring 4 are composed of To the outside, it is sequentially socketed on the movable conductive rod 1, and the guide sleeve 3 is connected to the movable end sealing ring 2 through the fixed ring 4; the guide sleeve 3 and the fixed ring 4 are respectively provided with anti-rotation planes that can prevent mutual rotation, When the fixed ring 4 is socketed with the guide sleeve 3, the anti-rotation plane of the guide sleeve 3 cooperates with the anti-rotation plane of the fixed ring 4, so that the guide sleeve 3 and the fixed ring 4 cannot rotate mutually along the circumferential direction.

[0035] The guide sleeve 3 is provided with a boss 31 that protrudes along the axial direction, and at least one first anti-rotat...

Embodiment 2

[0043] see Figure 12 to Figure 13 As shown, a vacuum interrupter of the present invention differs from Embodiment 1 in that the peripheral shape of the cross-section of the boss 31 of the guide sleeve 3 is pentagonal, and the peripheral wall of the boss is provided with There are five first anti-rotation planes 32 corresponding to the pentagon, and the inner ring wall of the fixed ring 4 is provided with five second anti-rotation planes adapted to the first anti-rotation planes 32 of the guide sleeve 41. When the fixed ring 4 is socketed with the guide sleeve 3, the first anti-rotation planes 32 of the guide sleeve 3 are respectively matched with the corresponding second anti-rotation planes 41 of the fixed ring, so that the guide sleeve 3 and the fixed ring 4 Cannot rotate mutually along the circumferential direction.

Embodiment 3

[0045] see Figure 14 to Figure 15 As shown, a vacuum interrupter of the present invention differs from Embodiment 1 in that the peripheral shape of the cross-section of the boss 31 of the guide sleeve 3 is octagonal, and the peripheral wall of the boss is provided with There are eight first anti-rotation planes 32 corresponding to the octagon, and the inner ring wall of the fixed ring 4 is provided with eight second anti-rotation planes compatible with the first anti-rotation planes 32 of the guide sleeve 41. When the fixed ring 4 is socketed with the guide sleeve 3, the first anti-rotation planes 32 of the guide sleeve 3 are respectively matched with the corresponding second anti-rotation planes 41 of the fixed ring, so that the guide sleeve 3 and the fixed ring 4 Cannot rotate mutually along the circumferential direction.

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Abstract

The invention discloses a vacuum arc-extinguishing chamber comprising a moving conductive rod, a moving end sealing ring matched with the moving conductive rod, a guiding sleeve and a fixed ring. The guiding sleeve and the fixed ring successively sleeve the moving conductive rod from inside to outside, and the guiding sleeve the connected to the moving end sealing ring through the fixed ring. The guiding ring and the fixed ring are respectively provided with a rotation prevention plane which is capable of preventing relative rotation, and when the fixed ring sleeves the guiding sleeve, the rotation prevention plane of the guiding sleeve is matched with the rotation prevention plane of the fixed ring, so that the guiding sleeve and the fixed ring fail to relatively rotate along the circumferential direction. According to the invention, a torsion-proof structure is added between the guiding sleeve and the fixed ring; the defects that damages to a corrugated pipe in an existing assembling process are caused, thereby leading to elastic and plastic deformation and event product scrapping caused by cracking of the corrugated pipe are prevented; in addition, the reduction of the mechanical lifetime of the product is prevented, the operation is simple, and the cost is low.

Description

technical field [0001] The invention relates to the technical field of vacuum arc extinguishing, in particular to a vacuum arc extinguishing chamber capable of preventing bellows from twisting. Background technique [0002] Vacuum interrupter, also known as vacuum switch tube, is the core component of medium and high voltage power switches. Through the excellent insulation of the vacuum in the tube, the vacuum interrupter can quickly extinguish the arc and suppress the current after the medium and high voltage circuit cuts off the power supply, so as to avoid accidents and accidents. It is mainly used in power transmission and distribution control systems, and also used in metallurgy, mining , Petroleum, chemical industry, railway, broadcasting, communication, industrial high-frequency heating and other power distribution control systems. [0003] The vacuum interrupter includes a guide sleeve positioning ring, a guide sleeve, a movable conductive rod and a bellows welded o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H33/664
CPCH01H33/664
Inventor 何跃朱朝南
Owner XIAMEN HONGFA ELECTRIC POWER CONTROLS
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