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High voltage vacuum circuit breaker with high rated current

A technology of vacuum circuit breaker and rated current value, which is used in high-voltage air circuit breakers, high-voltage/high-current switches, circuits, etc., to achieve the effect of improving thermal conductivity and rated current performance.

Inactive Publication Date: 2007-05-16
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The heat pipe technical solution adopted in this patent has never been used in high-voltage vacuum circuit breakers of 72.5kV and above in the world.

Method used

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  • High voltage vacuum circuit breaker with high rated current
  • High voltage vacuum circuit breaker with high rated current
  • High voltage vacuum circuit breaker with high rated current

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Embodiment Construction

[0012] The pole structure of the vacuum interrupter of the high voltage vacuum circuit breaker of the present invention is shown in FIG. 1 . Including the traditional vacuum circuit breaker, the structure of the vacuum interrupter pole of the vacuum circuit breaker includes: a ceramic bushing 3 as an insulating pillar, a vacuum interrupter 8 is installed in the ceramic bushing 3, and the vacuum interrupter 8 There are static conductive rods 13 and dynamic conductive rods 14 at both ends, and an upper conductive ring 6 and an upper flange 4 are arranged around the static conductive rod 13, and an upper terminal 1 connected to the upper conductive ring 6 is provided outside the ceramic sleeve 3 There is a lower conductive ring 7 and a conductive support 10 around the movable conductive rod 14, and a lower flange 5 is arranged below the conductive support 10, and the lower terminal 2 connected to the outside of the ceramic bushing is connected by the lower conductive ring 7; Abov...

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Abstract

The invention relates to a high-voltage vacuum breaker for high rated current. Wherein, the vacuum arc-extinguish chamber pole includes the ceramic sleeve for insulation to accommodate the chamber, a static conductive pole on one chamber end with an upper conductive ring and flange, a movable pose on another end with an lower conductive ring and conductive support with lower flange, two wire terminals on sleeve to connect former conductive rings; a first and second radiator near two flanges respectively; some insulation oil between the sleeve and chamber and the support; some evaporation holes on static pole supported by stainless steel, some refluence holes under evaporation holes, and some liquid working medium.

Description

technical field [0001] The invention relates to a high-voltage circuit breaker, in particular to a high-voltage vacuum circuit breaker with a high rated current value. Background technique [0002] Currently in 126kV and above high voltage and extra high voltage circuit breakers SF 6 Circuit breakers are mainstream products. SF 6 Gas is a gas with the strongest greenhouse effect among the six greenhouse effect gases pointed out in the "Kyoto Protocol". Vacuum circuit breakers have the advantages of environmental protection and high product performance, and are currently the mainstream products in the medium voltage class. Replace SF with high voltage vacuum circuit breaker 6 A circuit breaker is a good option. Vacuum circuit breakers have outstanding capabilities in breaking short-circuit currents, but it is not easy to improve rated current parameters. Under the premise of not changing the basic structure of the vacuum interrupter, the present invention improves the h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H33/66H01H33/664
Inventor 刘志远王季梅余小玲修士新
Owner XI AN JIAOTONG UNIV
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