Live line replacing method high voltage transmission line strain insulator-string and device

A technology for tensile insulator strings and high-voltage transmission lines, which is used in cable installation, overhead lines/cable equipment, suspension/strain insulators, etc. Easy to carry, easy to anchor, easy to replace

Active Publication Date: 2007-08-22
SHANGHAI MUNICIPAL ELECTRIC POWER CO +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0018] However, as mentioned above, the structure of the above-mentioned four-connected tension string is complicated, and the line voltage is high, and the combined tension of the four-split wires is large. If tools such as insulating bottle holders are used, not only the insulating tools are bulky and heavy, it is

Method used

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  • Live line replacing method high voltage transmission line strain insulator-string and device
  • Live line replacing method high voltage transmission line strain insulator-string and device
  • Live line replacing method high voltage transmission line strain insulator-string and device

Examples

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Embodiment 1

[0077] First, at the connecting ends of the wires and the insulator strings 2 to be replaced, that is, the wire ends used to connect the high-voltage wires 4 and the upper and lower tension insulator strings 2 of the high-voltage transmission line are connected to the large joint plate 5 on the fittings 1, and the device The front wing-shaped clamp 7 used for anchoring the wire tension.

[0078] Secondly, the rear wing-shaped fixture 8 used for anchoring the wire tension is installed at the parallel hanging plate 6 at the cross-arm end 3 of the iron tower. Use two special high-strength insulating anchor wire ropes 9 to connect respectively the two side wing ends of the described front and rear wing-shaped fixtures in parallel. The high-strength insulating anchor wire rope 9 and the front and rear wing-shaped clamps are used for anchoring and tightening the wire tension after the wire is tightened.

[0079] Between the left and right connecting forks of the wing-shaped front f...

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Abstract

This invention relates to a method for exchanging tension-proof insulator strands used in high voltage transmission lines and a devie, which installs a front and a back clamp for anchoring and stringing leads and a connection clamp of an anchor line at two places of connecting metals of a lead end and a horizontal end constituting a vertical pulley set for stringing the insulator strand and the connecting metal at both sides between the strand and the connecting metal, strings the pulley set synchronously and slowly to string one-side two high voltage leads, then to string the anchor line and the anchor lead, at the same time, removes the connection of the insulation strand and the connecting metal, relaxes the pulley set slowly to transfer the lead tension to the anchor line completely, therefore, when the lead is anchored, the original tensioned insulation strand is relaxed to a vertically hanging one for exchange, and the tighten, anchor of the lead and separation of the the insulator strand and the metal are finished at one run.

Description

technical field [0001] The present invention relates to a method and device for the operation and maintenance of overhead high-voltage transmission lines. Specifically, the present invention relates to a live replacement method and device for tension insulator strings used in high-voltage transmission lines. More specifically, the present invention relates to A live replacement method and device for a full string of quadruple tension insulator strings for high-voltage transmission lines. The line voltage can reach 500kv. Background technique [0002] In the operation of overhead high-voltage transmission lines, when the high-voltage conductors pass through the two ends of the iron tower in a horizontal manner, the high-voltage transmission lines are usually used in series with tension insulators to connect the high-voltage conductors close to the two sides of the iron tower to the cross-arm of the iron tower. , and the tensioned high-voltage conductors near the outer sides ...

Claims

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Application Information

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IPC IPC(8): H02G1/02H02G7/00H01B17/04
Inventor 孙鑫茂刘新平
Owner SHANGHAI MUNICIPAL ELECTRIC POWER CO
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