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Dual air chamber high voltage vacuum circuit breaker

A technology of vacuum circuit breaker and double air chamber, which is applied in high-voltage air circuit breakers, high-voltage/high-current switches, circuits, etc., can solve problems such as bellows damage, and achieve the effect of ensuring external insulation, avoiding damage, and wide application range

Inactive Publication Date: 2018-06-22
CHINA XD ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At this time, in order to ensure the insulation, a large gas pressure is required. However, the high-pressure gas is easy to damage the bellows in the vacuum interrupter.

Method used

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  • Dual air chamber high voltage vacuum circuit breaker
  • Dual air chamber high voltage vacuum circuit breaker
  • Dual air chamber high voltage vacuum circuit breaker

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Embodiment Construction

[0032] The present invention will be further described in detail below in conjunction with specific embodiments, which are explanations of the present invention rather than limitations.

[0033] The present invention is a dual-chamber high-voltage vacuum circuit breaker, such as figure 1 As shown, it includes a group of vacuum interrupter breaking units and two sealed air chambers, the first sealed air chamber A and the second sealed air chamber B, and the outer wall of the vacuum interrupter 1 is placed in the first sealed air chamber A , the bellows 4 of the vacuum interrupter is placed in the second sealed air chamber B.

[0034] The first sealed air chamber A is filled with high-pressure environment-friendly insulating gas or SF6 gas, and the second sealed air chamber B is filled with low-pressure environment-friendly insulating gas. The inflation pressure range of the first sealed air chamber A filled with environmentally friendly insulating gas is 0.15-0.8 MPa, and the ...

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Abstract

The invention provides a dual air chamber high voltage vacuum circuit breaker. The dual air chamber high voltage vacuum circuit breaker comprises a vacuum interrupter, a first sealed air chamber and asecond sealed air chamber, wherein a vacuum interrupter out wall is placed in the first sealed air chamber, and a bellows of the vacuum interrupter is placed in the second sealed air chamber; and theair pressure of the first sealed air chamber is not lower than the air pressure of the second sealed air chamber. The invention meets the requirement of the insulation withstand voltage level of theoutdoor part of the vacuum interrupter; environmental protection is ensured completely and external insulation is ensured; and damage to the bellows due to high pressure gas is also avoided. The two-way requirements can be met, and safe and reliable use and maintenance can be ensured. The dual air chamber high voltage vacuum circuit breaker can be applied to column vacuum circuit breakers and tankvacuum circuit breakers, is wide in application range, can meet the needs of different structural devices. The gas path strut for realizing the dual air chamber of the vacuum circuit breaker is realized and designed by setting the gas path, and the requirements of different position settings from a gas-filling structure is met.

Description

technical field [0001] The invention belongs to the technical field of high-voltage electrical appliances, and relates to a switchgear for a high-voltage system using a vacuum interrupter as a breaking unit, in particular to a high-voltage vacuum circuit breaker with double air chambers. Background technique [0002] Most of the existing high-voltage circuit breakers use sulfur hexafluoride as the electrical insulation and circuit breaking medium, but the large amount of sulfur hexafluoride will pollute the environment. Therefore, considering the issue of environmental protection, a vacuum circuit breaker is used under the high-voltage level. The vacuum circuit breaker uses a vacuum interrupter to break and uses an environmentally friendly gas as an insulating medium. At this time, a high gas pressure is required to ensure the insulation, however, the high-pressure gas is easy to damage the bellows in the vacuum interrupter. Contents of the invention [0003] Aiming at th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H33/664
CPCH01H33/664
Inventor 李鹏李欣颜莉萍
Owner CHINA XD ELECTRIC CO LTD
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