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Electrified pressure leakage blocking device and method for gas leakage of sulfur hexafluoride electrical equipment

A technology of electrical equipment and sulfur hexafluoride, which is applied in the direction of switchgear, electrical components, etc., can solve the problems of inconvenient plugging of sulfur hexafluoride electrical equipment, save time for power outage maintenance, facilitate maintenance and operation, and improve power supply reliability Effect

Inactive Publication Date: 2015-12-30
STATE GRID CORP OF CHINA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the technical problem of inconvenient plugging of sulfur hexafluoride electrical equipment at present, the present invention provides a gas leakage plugging device under pressure of sulfur hexafluoride electrical equipment that can realize non-stop power supply and is convenient and fast for plugging up leakage

Method used

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  • Electrified pressure leakage blocking device and method for gas leakage of sulfur hexafluoride electrical equipment
  • Electrified pressure leakage blocking device and method for gas leakage of sulfur hexafluoride electrical equipment
  • Electrified pressure leakage blocking device and method for gas leakage of sulfur hexafluoride electrical equipment

Examples

Experimental program
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Effect test

Embodiment 1

[0037] Sulfur hexafluoride gas leaked from the middle flange of phase B of a 220kV610 circuit breaker. First, use a 3.5m-long insulating fixing rod to place a ball valve with a pressure resistance of 1.6Mpa and an inner diameter of 19mm above the leak point, and sulfur hexafluoride gas will flow out of the opened ball valve.

[0038] Then use a 3m long insulated glue gun to apply modified epoxy resin to the base of the ball valve.

[0039] After the modified epoxy resin is completely cured, close the ball valve, remove the insulating fixing rod, and complete the plugging.

Embodiment 2

[0041] Sulfur hexafluoride gas leaked from phase A of a 110kV outdoor GIS512 circuit breaker. First, use a 2m-long insulating fixing rod to place a disc valve with a pressure resistance of 1.0Mpa and an inner diameter of 22mm above the leakage point, and sulfur hexafluoride gas will flow out of the opened disc valve.

[0042] Then use a 2m long insulated glue gun to apply the modified polyurethane resin to the base of the disc valve.

[0043] After the modified polyurethane resin is completely cured, close the ball valve, remove the insulating fixing rod, and complete the plugging.

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Abstract

The invention discloses an electrified pressure leakage blocking device and method for gas leakage of sulfur hexafluoride electrical equipment. The device comprises a cutoff valve arranged at the leakage point of the sulfur hexafluoride electrical equipment, an insulating fixing rod used for moving the cutoff valve to the leakage point of the sulfur hexafluoride electrical equipment and an insulating glue-injecting gun used for fixing the cutoff valve to the leakage point of the sulfur hexafluoride electrical equipment. The device and method have the advantages that when the leakage point of the sulfur hexafluoride electrical equipment is electrified or the safe distance between a leakage blocking maintainer and the electrified portion does not meet requirements, by the adoption of the device and method, in maintaining, it is unnecessary to power off the sulfur hexafluoride electrical equipment in leakage, pressure reduction or recycling of sulfur hexafluoride is not needed, maintaining is convenient and rapid, the device and method are suitable for electrical equipment made of metal, ceramic, cement and other various materials, on the premise that personal safety of the leakage blocking maintainer is ensured, shutdown maintaining time of an electrical system is shortened, and power-supply reliability of a power net is improved.

Description

technical field [0001] The invention relates to the field of power system equipment maintenance, and in particular to a plugging device and method for gas leakage of sulfur hexafluoride electrical equipment under live pressure. Background technique [0002] With the vigorous development of the power industry, sulfur hexafluoride is widely used in high-voltage electrical equipment because of its good electrical properties. However, due to the material, manufacturing process and installation of the equipment, the gas leakage problem of sulfur hexafluoride electrical equipment is very common in China and even in the world. [0003] At present, the common maintenance method for leaking sulfur hexafluoride electrical equipment is to replace it in whole or in part, but this method requires a long-term power outage of the equipment and even the line, which will have a negative impact on the safe and stable operation of the power grid and social and economic benefits . Other conve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02B3/00
Inventor 周舟龚尚昆万涛周年光冯兵陶靖李臻
Owner STATE GRID CORP OF CHINA
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