CN102496864A - Method for eliminating gas leakage of gas-insulated metal-enclosed switch - Google Patents

Abstract

The invention discloses a method for eliminating gas leakage of a gas-insulated metal-enclosed switch and belongs to the field of safety maintenance of high-voltage power distribution devices. The method comprises the following steps of: (1) detecting a gas leakage point by use of a sulfur hexafluoride gas detector; (2) washing a gas leakage sand hole with oxidized water; (3) stopping the leakage of the sand hole at the gas leakage point by riveting a thin aluminum wire into the sand hole; (4) fastening the leakage of a flange sealing ring by use of a torque spanner; and (5) stopping the leakage of an aged flange sealing ring by winding an insulating tape or blocking with high-voltage butter along the section of a flange. The method disclosed by the invention can be used for dealing with the hidden danger of gas leakage of the gas-insulated metal-enclosed switch in time without power cut, thereby preventing explosion accident of the electric equipment caused by the reduction of an insulating medium, and avoiding the power cut of the electric equipment and the consequent loss of a production system.

Description

Eliminate the method for gas-insulated metal enclosed switchgear gas leakage

Technical field:

The invention belongs to the security maintenance field of high voltage distribution installation, be specifically related to the method for charged elimination gas-insulated metal enclosed switchgear gas leakage

Background technology:

Along with the develop rapidly of electric power system, earth-shaking variation also takes place in power supply unit, and circuit breaker becomes evacuation by rareization, and split type power supply unit changes the composite type power supply unit into, and wherein, gas-insulated metal enclosed switchgear obtains widespread usage.

Gas-insulated metal enclosed switchgear have take up room little, characteristics such as technical performance is good, but in use the gas-insulated metal enclosed switchgear gas leak phenomenon happens occasionally.Usually after the gas leakage, be responsible for processing by manufacturer, the conservative processing of the general requirement of manufacturer must have a power failure, and instruments such as the corresponding crane of necessary configuration cooperate to be handled, and the power failure processing cycle is longer.

Summary of the invention:

The present invention provides a kind of need the power failure just can eliminate the method for gas-insulated metal enclosed switchgear gas leakage, this method safety, and the time spent is short.

Of the present invention comprising:

1, use the sulfur hexafluoride gas leak detector to detect the gas leakage point;

2, gas leakage trachoma is cleaned with oxidize water;

3, adopt thin aluminium wire riveting to go into trachoma to the trachoma of gas leakage point and carry out leak stopping;

4, it is fastening to utilize torque spanner to carry out to the gas leakage of flangeseal circle;

5, aging flangeseal circle is carried out leak stopping, comprise and add stifled along the ring flange cross section with insulating tape winding or use high pressure butter.

The present invention need not have a power failure and just can in time handle the gas leakage hidden danger of gas-insulated metal enclosed switchgear, prevents electric equipment because dielectric reduces, and causes the electric equipment explosion accident; Avoid electric equipment have a power failure to handle, the loss that brings to production system.

Embodiment:

The ten total step-down station 220kV gas-insulated metal enclosed switchgear gas leakage of embodiment 1:2009 Taiyuan Iron and Steel Co. in March; Use the sulfur hexafluoride gas leak detector to find and be the trachoma gas leakage of bus cabin, clean the gas leakage point, insert the gas leakage point with aluminium wire with oxidant; And carry out local riveting and hit; Handled gas leakage, directly saved artificial material and take nearly 300,000 yuan, secondary factory stopping production indirect expense is more considerable;

Embodiment 2:

In October, 2009 Taiyuan Iron and Steel Co. 11 step-down station 220kV gas-insulated metal enclosed switchgears gas leakage detects and finds to be the flangeseal circle because stressed irregular gas leakage, and producer requires to have a power failure; Disassembled equipment is changed sealing ring; We have adopted the ring flange fixation: with the bolt looseness agent flange plate bolt is lubricated earlier, utilizes the sulfur hexafluoride gas leak detector to hunt leak, confirm gas leakage point and air leakage size; According to bolt degree of tightness situation; Fastening to the flange plate bolt symmetry, handled gas leak phenomenon, 100,000 yuan of direct saving costs.

Claims (1)

1. eliminate the method for gas-insulated metal enclosed switchgear gas leakage, it comprises:

(1), use the sulfur hexafluoride gas leak detector to detect the gas leakage point;

(2), gas leakage trachoma is cleaned with oxidize water;

(3), adopt thin aluminium wire riveting to go into trachoma to the trachoma of gas leakage point and carry out leak stopping;

(4), it is fastening to utilize torque spanner to carry out to the gas leakage of flangeseal circle;

(5), aging flangeseal circle is carried out leak stopping, comprise with insulating tape and twine or use the high pressure butter to add stifled along the ring flange cross section.