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Gas circuit breaker with reinforced insulation recovery function

A gas circuit breaker and recovery function technology, applied in the field of gas circuit breakers with enhanced insulation recovery function, can solve the problems of insulation capacity decline, insulation cylinder gas pressure fluctuations, etc., achieve uniform density, speed up the insulation recovery rate, and benefit The effect of insulation performance

Active Publication Date: 2017-05-24
SHANGHAI SIEYUAN HIGH VOLTAGE SWITCHGEAR +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the current is interrupted, the rapid movement of the cylinder in the arc extinguishing chamber will cause a large instantaneous fluctuation of the gas pressure inside the insulating cylinder, resulting in a short-term drop in insulation capacity

Method used

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  • Gas circuit breaker with reinforced insulation recovery function
  • Gas circuit breaker with reinforced insulation recovery function
  • Gas circuit breaker with reinforced insulation recovery function

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Embodiment Construction

[0077] In order to make the technical means, creative features, objectives and effects of the present invention easy to understand, the present invention will be further explained below in conjunction with specific embodiments.

[0078] See figure 1 with figure 2 , The gas circuit breaker with enhanced insulation recovery function of the present invention includes the following functional components: dynamic side support base 1, static side support base 17, insulation cylinder 10, static side main contact 12, dynamic side main contact Head 25, insulating cylinder support seats 9 and 14, moving arc contact 27, static arc contact 23, cylinder barrel 34, main nozzle 24, auxiliary nozzle 26, expansion chamber 28, compressor chamber 31, pressure relief valve 32, moving side The guide tube 35, the static side guide tube 20, the tie rod 33 and the circuit breaker housing 39.

[0079] When the circuit breaker breaks a large current, the tie rod 33 pulls the cylinder barrel 34 to move for ...

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PUM

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Abstract

The invention discloses a gas circuit breaker with a reinforced insulation recovery function. An expansion chamber, a compressed gas chamber, a main nozzle, an auxiliary nozzle, a moving side arc contact and a static side arc contact constitute an arc breaking core component. An arc extinguishing chamber is composed of an inner mixing area and an outer mixing area. Drainage holes of guide cylinders draw insulating gas in the outer mixing area of the arc extinguishing chamber into the inner mixing area of the arc extinguishing chamber, and the insulating gas and arc high-temperature gas are mixed at a first level and cooled in an area closest to a fracture. Drainage holes of a support base draw insulating gas outside the arc extinguishing chamber into the outer mixing area of the arc extinguishing chamber, and the insulating gas and arc gas are mixed at a second level and cooled. Spoilers at exhaust ports reduce the local velocity of high-temperature mixed gas exhausted. A pressure balance hole is arranged in a main contact shielding cover, which reduces the pressure difference between the two sides of the shielding cover. A pressure balance hole is arranged in an insulating cylinder, which reduces the fluctuation of gas pressure inside the insulating cylinder.

Description

Technical field [0001] The invention relates to the field of gas circuit breakers, and in particular to a gas circuit breaker with enhanced insulation recovery function. Background technique [0002] The working principle of the high-voltage gas circuit breaker is to rapidly cool and effectively discharge the arc gas generated during the current breaking process, so that the entire device can quickly recover and maintain a good electrical insulation state. Arc gas has the characteristics of high temperature, high pressure and poor insulation ability. It must be accurately designed for the circuit breaker's flow field to ensure that the circuit breaker can quickly cool down and restore the insulation ability. [0003] Generally, the arc gas discharge design of circuit breakers adopts the gas buffer design method, that is, a certain volume of gas buffer is set downstream of the arc gas, a certain amount of insulating gas is pre-stored, and an array of small holes is arranged at the o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H33/74H01H33/22
CPCH01H33/22H01H33/74
Inventor 顾巍陈敏杰岑义顺郭自德
Owner SHANGHAI SIEYUAN HIGH VOLTAGE SWITCHGEAR
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