CN2513218Y

CN2513218Y - Vacuum breaker and vacuum switch

Info

Publication number: CN2513218Y
Application number: CN 01273675
Authority: CN
Inventors: 王广华
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-11-30
Filing date: 2001-11-30
Publication date: 2002-09-25
Anticipated expiration: 2011-11-30

Abstract

The utility model provides a vacuum breaker and vacuum switch, with each item sleeved with a silicon rubber wave tube, realizing single-item sealing insulation, thereby having advantages of small volume, light weight and no condensation as well as preventing pollution and being safe and reliable.

Description

A kind of vacuum circuit-breaker and vacuum switch

The utility model relates to the High-Voltage Electrical Appliances field, is used for the He Guanhe that cut-offs of high-tension line.

Existing vacuum circuit-breaker and vacuum switch, have be three with the case air insulation, have be three with separator for container insulation or straight barrel type cover pipe insulation, so these products all volume is big, heaviness, there is condensation trouble in gas leakage, can not accomplish the individual event sealed insulation.

The purpose of this utility model provides a kind of small volume and less weight, no dewfall, and few the maintenance, safe and reliable, the vacuum circuit-breaker and the vacuum switch of individual event insulation and sealing.The technical measures that the utility model is taked are, opening and closing movement position at vacuum circuit-breaker and vacuum switch, all install on each one by the silicon rubber manufacturing, can produce with the action of mechanism and elongate or shorten, corrugated sealed insulation pipe, thereby realize three same casees, the individual event sealed insulation.

Below in conjunction with accompanying drawing utility model is described further:

The individual event sealed insulation figure of Fig. 1 vacuum circuit-breaker and vacuum switch.

Fig. 2 silicon rubber bellows figure.

The meaning of symbolic representation is as follows among the figure:

1---silicon rubber bellows 2---unit head 3---insulator

Close under the state in the normal pass of vacuum circuit-breaker and vacuum switch, the left-half of silicon rubber line pipe 1 is subjected to the stretching action of unit head 2 and extends, and the right half part of silicon rubber bellows is compressed effect and shortens; Otherwise under the state that cut-offs of vacuum circuit-breaker and vacuum switch, the left-half of silicon rubber bellows is compressed, and right half part is stretched.Silicon rubber bellows 1 is worked in often cut-offfing and closing under the state that closes of circuit.Because the silicon rubber bellows itself is exactly high voltage withstanding insulating material, have better elastic and ageing-resistant performance again simultaneously, so can under the repeated multiple times tension and compression effect of unit head 2, play desirable sealed insulation effect.The silicon rubber bellows design manufactures corrugated, is in order to increase the ability of its strain, to make the silicon rubber bellows under external force for a long time, still can operate as normal and the gas leakage of not rupturing.Circular shape is made in the centre of silicon rubber bellows, is to match for the profile with unit head 2.The flange shape is all made at the two ends of silicon rubber bellows, so that link to each other with insulator 3 with screw.Because the silicon rubber bellows is the flexible pipe of an integral body, be enclosed within on each of vacuum circuit-breaker and vacuum switch, two ends seal with flange and insulator again, thereby have played the effect of individual event sealed insulation.

The maximum outside diameter 140mm of silicon rubber bellows, minimum diameter 80mm, length 240mm, wall thickness 5mm, pitch of waves 36mm can satisfy the needs of vacuum circuit-breaker and vacuum switch actuating length 10mm.The phase spacing of this vacuum circuit breaker and vacuum switch is 150mm, has realized miniaturization, light-weighted purpose.

Therefore the utility model volume is little, in light weight, and can single-phase sealed insulation, really accomplished anti-pollution, no dewfall, safe and reliable, give install, operation, maintenance offer convenience.

Claims

A kind of vacuum circuit-breaker and vacuum switch with the sealed insulation pipe is characterized in that described sealed insulation pipe is that silicon rubber is made, and are a pipe of bellows-shaped, are sleeved on each actuating length position of vacuum circuit-breaker and vacuum switch.