Porcelain knob breaker

A circuit breaker and ceramic column type technology, applied in the field of high voltage ceramic column circuit breakers, can solve the problems of complicated supplementary gas process, failure to meet product technical requirements, affecting the breaking current capability of circuit breakers, etc. normal working effect

Active Publication Date: 2007-03-07
ZHEJIANG HUAYI ELECTRIC APPLIANCE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 1. The mixed gas (SF6 / N2; SF6 / CF4, etc.) is used as the arc extinguishing and insulating medium. The disadvantage is that the breaking current capacity of the circuit breaker is only about 80% of the original; the mixing method of the mixed gas ratio needs to be reasonably matched. Otherwise, the insulating properties and arc extinguishing properties of the mixed gas will be severely weakened, and once the gas leaks, the supplementary gas process is very complicated and cannot meet the product technical requirements
[0005] 2. Reduce the SF6 gas pressure to reduce the liquefaction point of SF6 gas, but due to the reduction of gas pressure, the gas density also decreases, resulting in a decrease in the arc extinguishing performance and insulation performance of the circuit breaker
Directly affect the breaking current capacity of the circuit breaker

Method used

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  • Porcelain knob breaker
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Examples

Experimental program
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Effect test

Embodiment Construction

[0015] As shown in Figure 1, each phase of the ceramic column circuit breaker includes the porcelain sleeve 1 of the arc extinguishing chamber, the upper outlet seat 2, the lower outlet seat 3, the pillar porcelain sleeve 4, the crank box 5 and the cylinder in the arc extinguishing chamber porcelain sleeve 6 Medium and high-voltage SF6 gas, when the circuit is switched on and off, the electrical contacts of the upper and lower outlet sockets will separate or pull in, and the generated arc will be extinguished by the high-pressure SF6 gas ejected from the nozzle part 7 to ensure the normal operation of the circuit breaker. break.

[0016] Figure 2 shows the heating working area of ​​the lower end of the pillar porcelain sleeve. The sensor 81 of the temperature controller is installed on the inner surface of the lower end support member 41 of the porcelain sleeve, and the heater, namely the heating ring 82, is wrapped on the outer surface of the lower end support member of the po...

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PUM

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Abstract

This invention relates to converter device and to high pressure knob breaker, which comprises comprise three phase or single phase knob, knob lever and structure case, wherein, the knob adopts high voltage SF6 gas as arc extinction and insulator medium; each knob column knob down end is located with heating device; the heater device comprises temperature controller, heater, contact and heater breaker; the above elements form heater circuit.

Description

technical field [0001] The invention relates to a power transmission and transformation equipment, in particular to a high-voltage porcelain column circuit breaker. Background technique [0002] Patent No. ZL200420027316.1 discloses an outdoor high-voltage self-energized sulfur hexafluoride circuit breaker, which uses high-voltage SF6 gas as the arc extinguishing and insulating medium. Outdoor high-voltage circuit breakers are used in a wide range. For example, in Xinjiang, Inner Mongolia and Northeast China, the winter climate is cold, and the outdoor temperature reaches -40°C, and some areas even reach -50°C. Liquefied, the gas pressure is reduced to the blocking pressure value, the circuit breaker cannot work normally, and has to be out of operation, and in serious cases, it will cause a large-scale power outage. [0003] In order to solve the problem of reliable operation of high-voltage SF6 circuit breakers at ultra-low temperatures, relevant manufacturers and research...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H33/88H01H33/91
Inventor 惠志兴
Owner ZHEJIANG HUAYI ELECTRIC APPLIANCE TECH
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