On-spot leakage detection and blocking technique of whole-sealing combination electric appliance

Abstract

The invention discloses an on-spot leakage detection and blocking technique of a whole-sealing combination electric appliance and belongs to the technical field of electric power. According to the technical scheme, leakage points of different SF6 gas leakage portions existing in operation of the whole-sealing combination electric appliance are accurately detected by flexibly utilizing the comprehensive monitoring method, the pressure lowering analyzing method, the segmentation positioning method, the local accumulation method, the soap bubble method, the sealing gum method and the like in an on-spot mode, and therefore leakage blocking processing techniques such as strict techniques, welding joint repairing, sample stamping and blocking, pressing cap additionally arranging and part replacing can be implemented in a targeted mode, and equipment operation is fast recovered. The on-spot leakage detection and blocking technique of the whole-sealing combination electric appliance has the advantages of being simple, convenient to use, easy to perform, accurate and fast in leakage detection, capable of lowering the blindness, simple and effective in leakage blocking, capable of reducing the workload, low in maintaining cost, high in maintenance efficiency, capable of reducing outage of equipment and ensuring safety operation of the equipment and obvious in social and economic benefit.

Description

technical field [0001] A simple and easy on-the-spot leak detection and plugging process method for fully enclosed combined electrical appliances belongs to the electrical technical field. Background technique [0002] The fully enclosed combined electrical appliance (GIS) uses sulfur hexafluoride gas (SF) with excellent insulation properties. 6 As the insulating and arc-extinguishing medium, the gas connects the electrical equipment in turn to form a whole, all of which are packaged in a closed metal grounding case. A new type of high-voltage electrical appliance, which has the advantages of miniaturization, modularization of components, high reliability, and strong arc-extinguishing ability. , good cooling characteristics, short installation period, long service life and other remarkable features. However, with the increase of operating years, the equipment gradually appears SF 6 The gas leakage problem will cause the gas pressure to drop or even block the switch action,...

AI Technical Summary

Problems solved by technology

At present, leak detection mostly uses high-sensitivity probes to detect leaky parts of equipment, while leak plugging mostly involves tightening fastening bolts, replacing leaking pressure gauges, seals, porcelain sleeves, etc., which is far from meeting the needs of on-site maintenance and elimination. leakage requirements, there is an urgent need for comprehensive measures, innovative