Aerial insulation wire electrification repairing method

Abstract

The invention relates to an aerial insulation wire electrification overhauling method, in particular to an aerial insulation wire electrification repairing method. The method comprises the steps that polyimide adhesive tape is wrapped on the exposed part of an aerial insulation wire through a half fold packaging method, the outer side of the exposed part wrapped by the polyimide adhesive tape is coated with a layer of teflon coating film, an injection hole is formed in the middle of the teflon coating film, and a spray gun sprays a polyurethane foam joint mixture to the position between the teflon coating film and the polyimide adhesive tape through the injection hole for joint filling. According to the aerial insulation wire electrification repairing method, the problems that the insulation performance of the aerial wire is lowered, and a grounded short circuit accident is caused due to the facts that the aerial wire is exposed and the insulation adhesive tape is aged, unglued and chapped are effectively prevented, large-area power failure is avoided, power supply reliability is provided for reducing interphase short circuits and ground faults, and hidden dangers existing when workers work are avoided.

Description

technical field [0001] The invention relates to a maintenance method for an overhead insulated wire, in particular to a live repair method for an overhead insulated wire. Background technique [0002] During the operation of overhead insulated conductors, due to the damage of other external forces such as temporary grounding wires, T-connections before removal, tree branch friction, etc., the cores of overhead insulated conductors are exposed, and the exposed cores are easily corroded by the atmospheric environment. , the wire core will be rusted and broken, and a grounding short circuit accident will occur, which will cause a large-scale power outage, which will bring inconvenience to economic development and residents' life; The insulation rate must reach 100%. If the exposed aluminum wire core is not insulated in time, after a period of time, due to dirt, the silver-white aluminum wire core will turn black, which is similar to the black insulation layer of the wire, and i...

AI Technical Summary

Problems solved by technology

[0002] During the operation of overhead insulated conductors, due to the damage of other external forces such as temporary grounding wires, T-connections before removal, tree branch friction, etc., the cores of overhead insulated conductors are exposed, and the exposed cores are easily corroded by the atmospheric environment. , the wire core will be rusted and broken, and a grounding short circuit accident will occur, which will cause a large-scale power outage, which will bring inconvenience to economic development and residents' life; The insulation rate must reach 100%. If the exposed aluminum wire core is not insulated in time, after a period of time, due to dirt, the silver-white aluminum wire core will turn black, which is similar to the black insulation layer of the wire, and it is not easy to distinguish. This will bury safety hazards for future operators when working live with electricity, and a little carelessness will lead to electric shock casualties

[0003] At present, insulating tape is usually used to wrap the exposed part. The withstand voltage level of a single layer of insulating tape is only 380V, but the voltage level of overhead insulated conductors is generally 10kV. To withstand the voltage of 10kV, 26 layers of insulating tape need to be wound, and due to The adhesive tape has poor atmospheric aging resistance and is generally used indoors. If it is exposed to the atmospheric environment for a long time, the glue will open in summer and crack in winter, and the insulation performance will be greatly reduced. Replacing the insulating tape requires live work, and there is a greater danger

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