Electrified replacement tool and method for +/-800 kV circuit strain insulator string

A technology of tensile insulator string and live replacement, applied in the direction of overhead line/cable equipment, etc., to achieve the effect of light and simple tools, reduced damage, and convenient process.

Active Publication Date: 2014-11-12
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 repl

Method used

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  • Electrified replacement tool and method for +/-800 kV circuit strain insulator string
  • Electrified replacement tool and method for +/-800 kV circuit strain insulator string
  • Electrified replacement tool and method for +/-800 kV circuit strain insulator string

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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 Leading screws 531,532 and insulating tie 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 ...

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Abstract

The invention provides an electrified replacement tool and method for a +/-800 kV circuit strain insulator string. The electrified replacement tool comprises a tower head end clamp, a wire end turnover board clamp, a wire end bearing support, hydraulic lead screws, mechanical lead screws and insulating pull rods. The tower head end clamp is provided with a first idler wheel and a pulley. The wire end bearing support is provided with a second idler wheel. The tower head end clamp, the wire end turnover board clamp and the wire end bearing support are arranged at the two ends of the strain insulator string to be replaced respectively and the tower head end clamp and the wire end turnover board clamp are connected through the hydraulic lead screws, the mechanical lead screws and the insulating pull rods, so that a load is transferred, the strain insulator string is replaced, and installation is more stable; the first idler wheel, the second idler wheel and the pulley can provide supporting points for a main hauling cable and a steel wire rope sleeve which are applied to the strain insulator string replacement process, so that the main hauling cable and the steel wire rope sleeve are not likely to intervene with components or tools on a transmission line and damage is reduced.

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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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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