Special insulation shielding tool for replacing intermediate-phase isolating switch in on-load manner by using insulating rod method

Abstract

The invention relates to a special insulation shielding tool for replacing an intermediate-phase isolating switch in an on-load manner by using an insulating rod method. The special insulation shielding tool is widely used for replacing the intermediate-phase isolating switch of an overhead distribution line in an on-load manner by using the insulating rod method and belongs to the technical fieldof distribution line live-line overhaul. The special insulation shielding tool comprises an insulating spacer and a shielding cover which are provided with a connector and the connector I. The top ofthe insulating spacer is equipped with a hook body I and a hook body II. The shielding cover includes an insulator cover and a wire cover. Detachable insulated operating rods are mounted on the connector and the connector I. Each insulated operating rod includes a metal head sleeved with an intermediate ring. The intermediate ring is sleeved with a locking ring. An outer tube I and an outer tubeII sleeve an insulated transmission rod along the length direction. The tail end of the outer tube II is fixed to the tail end of the insulated transmission rod. The special insulation shielding toolis simple in structure, convenient to install, good in safety and reliability, wide in application range, and high in live working efficiency.

Description

technical field [0001] The invention relates to a special insulation shielding tool for replacing a middle-phase isolating switch with a load by the insulating rod method, which is widely used in the work of replacing a middle-phase isolating switch with a load by the insulating rod method for overhead power distribution lines, and belongs to the on-site technology for live maintenance of power distribution lines field. Background technique [0002] The isolating switch is a switchgear without an arc extinguishing device commonly used on power distribution overhead lines. It has an obvious disconnection point when opening to ensure the safety of other electrical equipment; Load current and short circuit fault current. Due to insulation aging, external force damage, service life and other reasons, it is necessary to frequently replace the isolating switch. [0003] Replacing isolating switches in a power outage needs to interrupt the power supply in a certain area, which af...

AI Technical Summary

Problems solved by technology

[0005] At present, there is a technical difficulty in carrying out the work of replacing the isolating switch with load by the insulating rod method: when replacing the middle-phase isolating switch, because the operator is between two phases when removing the isolating switch, the working space is narrow, and there is no special shelter The appliance insulates and shields the two-phase lead wires, and the operator is likely to have insufficient safety distance from the live body or even directly touch the live body when working, thus causing electric shock hazards

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