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Combination tool for replacing direct-current grounding electrode line strain insulator string through horizontal rotation method and method

A DC grounding, horizontal rotation technology, applied in the direction of overhead lines/cable equipment, etc., to achieve the effect of easy disassembly, easy installation, and easy connection

Pending Publication Date: 2019-04-23
STATE GRID CORP OF CHINA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, when replacing the tension string, the tools and tools for live work on DC grounding lines cannot simply follow the tools and methods for live work on distribution lines or transmission lines.

Method used

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  • Combination tool for replacing direct-current grounding electrode line strain insulator string through horizontal rotation method and method
  • Combination tool for replacing direct-current grounding electrode line strain insulator string through horizontal rotation method and method
  • Combination tool for replacing direct-current grounding electrode line strain insulator string through horizontal rotation method and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] Such as figure 1 A combined tool for replacing the tension string of the DC grounding electrode line shown by a horizontal rotation method includes a cross-arm side-connection board 1 that can be fixedly clamped on the bottom edge of the cross-arm side triangular connection plate a, and can be fixedly clamped The wire side connecting board 2 and the rotating hanger assembly 3 on the wire side connecting board b; the cross-arm side connecting board 1 is vertically arranged with the cross-arm side triangle connecting board a, and the wire side connecting board 2. Arranged vertically with the wire side connection board b, the upper and lower ends of the cross arm side connection board 1 are respectively inserted with an upper anti-twist screw rod 4 and a lower anti-twist screw rod 5, and the upper anti-twist wire The rod 4 is connected to the upper end of the wire side connecting board 2 through the upper insulating rod 6, and the lower anti-twist screw rod 5 is connected ...

Embodiment 2

[0068] The method of using the combined tool for replacing the strain string of the DC grounding electrode line by the above-mentioned horizontal rotation method includes the following steps:

[0069]1) The ground potential electrician climbs to the ground potential electrician's working position of the tower, and the ground potential electrician installs the tower fixed pulley on the tower and puts the tower side transfer rope on the tower fixed pulley;

[0070] 2) The first ground electrician transfers the insulating operating rod and the wire fixed pulley with the wire side transfer rope to the ground potential electrician through the transmission rope on the side of the tower, and the ground potential electrician hooks the fixed pulley on the wire through the insulating operating rod to correspond to the old wire. The position of the wire end of the tension string;

[0071] 3) The second ground electrician secures the end of the insulating ladder with the transfer rope on ...

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Abstract

The invention provides a combination tool for replacing a direct-current grounding electrode line strain insulator string through a horizontal rotation method. The combination tool comprises a cross arm side yoke plate card and a lead wire side yoke plate card; an upper anti-twisting screw rod and a lower anti-twisting screw rod are correspondingly inserted into upper and lower ends of the cross arm side yoke plate card respectively; the upper anti-twisting screw rod is connected with the upper end of the lead wire side yoke plate card through an upper insulation pull rod; the lower anti-twisting screw rod is connected with the lower end of the lead wire side yoke plate card through a lower insulation pull rod; a rotary hanging bracket assembly comprises a frame seat, a supporting shaft, afixed connection rod, a sleeve and a horizontal pipe; the lower end of the supporting shaft is inserted into the frame seat; the upper end of the supporting shaft is connected with one end of the fixed connection rod; the other end of the fixed connection rod is connected with the upper end of the cross arm side yoke plate card; the sleeve is rotatably sleeve the supporting shaft; a cross arm endof the horizontal pipe is connected with the sleeve; a lead wire end of the horizontal pipe can extend to the upper side of a lead wire end of the strain insulator string; a tripod assembly which canbe connected with an insulator cradle is hoisted at the lower end of the supporting shaft. By adopting the combination tool, the direct-current grounding electrode line strain insulator string can bereplaced; the combination tool is applicable to line overhauling.

Description

technical field [0001] The invention relates to the field of high-voltage direct current, in particular to a combined tool and method for replacing the strain string of a direct current ground electrode line by a horizontal rotation method. Background technique [0002] HVDC transmission has unique advantages over AC transmission in terms of long-distance and high-power transmission of electric energy, so it is widely used in large-capacity, ultra-long-distance point-to-point power transmission, such as hydropower transmission from the west to the east in Jiangsu, Shanghai and other places Adopt the mode of high-voltage direct current transmission. At present, the live work of the DC transmission system is mainly concentrated on the DC high-voltage line and the converter station, and there is a lack of in-depth research on the DC grounding line. Therefore, the live work of the DC grounding line lacks both theoretical foundation and practical experience. When the ground elec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02G1/02
CPCH02G1/02
Inventor 杜勇程绳董晓虎闫旭东尹洪王国满龙飞吴军姚京松姚俊孙继雄孙忠慧
Owner STATE GRID CORP OF CHINA
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