A Live Replacement Tool and Method for Tension Insulator Strings of ±800kv Lines

A technology of strain-resistant insulator strings and live replacement, which is applied in the direction of overhead lines/cable equipment, etc., to achieve the effects of reducing damage, light and simple tools, and convenient process realization

Active Publication Date: 2016-08-24
EXTRA HIGH VOLTAGE POWER TRANSMISSION NANJING OF CHINA SOUTHERN POWER GRID
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the prior art, there is no special tool for live replacement of ±800kV transmission lines to replace insulator strings

Method used

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  • A Live Replacement Tool and Method for Tension Insulator Strings of ±800kv Lines
  • A Live Replacement Tool and Method for Tension Insulator Strings of ±800kv Lines
  • A Live Replacement Tool and Method for Tension Insulator Strings of ±800kv Lines

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Experimental program
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Effect test

Embodiment Construction

[0038] Such as Figure 1-12 As shown, a live replacement tool for a ±800kV line tension insulator string of the present invention includes a tower head end clamp 1, a lead end flap clamp 2, a lead end load-bearing support 4, hydraulic screw screws 511, 512, mechanical Lead screws 531,532 and insulating pull rods 521,522.

[0039] Wherein, the middle part of the lead end flap card 2 corresponds to the lead end connecting plate 36 of the tension insulator string 3 to be replaced and is provided with an opening that can be stuck on the lead end connecting plate 36, and the two sides of the lead end flip card 2 are respectively provided with openings corresponding to the lead end connecting plate 36. Open vertical flap card connection holes 21,22.

[0040] The tower head clamp 1 includes a bracket plate assembly 12 and a clamping plate 11 provided with two side wings 111, 112. The bracket plate assembly 12 is fixed on the top of the clamping plate 11 through a connecting plate 12...

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Abstract

A live replacement tool and method for tension insulator strings of ±800kV lines, including a tower head clamp, a wire end flip clamp, a wire end bearing support, a hydraulic screw, a mechanical screw, and an insulating pull rod. The jig is equipped with a first roller and a pulley, and the load-bearing bracket of the wire end is equipped with a second roller. By installing the tower head end jig, the wire end flip card and the wire end at both ends of the tension insulator string to be replaced The load-bearing bracket is connected between the fixture at the tower head end and the flip plate at the lead end through a hydraulic screw, a mechanical screw and an insulating pull bar to realize load transfer, complete the replacement, and the installation is more stable, and the first roller , The second roller and the pulley can provide support points for the main traction rope and steel wire sheath used in the replacement of the tension insulator string, so that the main traction rope and steel wire sheath are not easy to interfere with the components or tools on the transmission line, reducing damage.

Description

technical field [0001] The invention mainly relates to the technical field of insulator string replacement, in particular to a live replacement tool and method for a ±800kV line tension insulator string. Background technique [0002] The insulators on the transmission line have been operating in the field for a long time. Affected by various factors, the deterioration and damage of the insulators are inevitable. In order to ensure the reliability of the power supply of the ±800kV transmission line, the deteriorated and damaged insulators must be replaced, and the ±800kV transmission line It is an important power transmission channel. If the insulator is replaced by a power outage, it will have a great impact on the operation of the grid and the power supply. It is inevitable to choose the live work method to replace the insulator of the ±800kV transmission line. [0003] Most of the replacement of the tension insulator strings on the ±800kV UHV DC transmission line needs to ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02G1/02
Inventor 李昌甫方刚吴正树陆文叁黄琼刘宝龙卢李仪周家荣侯俊潘有志韦佩才陆权
Owner EXTRA HIGH VOLTAGE POWER TRANSMISSION NANJING OF CHINA SOUTHERN POWER GRID
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