A method for replacing ground wires across high-speed railways by using old wires to seal the network

A technology of conducting ground wires and wires, applied in the direction of overhead lines/cable equipment, etc., can solve the problems of high construction cost and long construction period, and achieve the effect of reducing construction links, reducing construction costs, and shortening the construction period

Active Publication Date: 2021-05-07
浙江省送变电工程有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Usually, the method of setting up spanning frames on both sides of the high-speed rail is used to seal the network. This construction method has a long construction period and high construction costs

Method used

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  • A method for replacing ground wires across high-speed railways by using old wires to seal the network
  • A method for replacing ground wires across high-speed railways by using old wires to seal the network
  • A method for replacing ground wires across high-speed railways by using old wires to seal the network

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Embodiment Construction

[0058] The technical solution of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0059] A method for replacing the ground wire across the high-speed rail by using the old wire to seal the network, the implementation process includes the following steps:

[0060] S1: if figure 1 As shown, weaving capping nets 18 on the ground, each capping net 18 adopts Φ12 nylon ropes in both vertical and horizontal directions, and weaves them into grids at a distance of 2m. The net ropes are knotted and fixed. Determine the length and width of the capping net 18 according to the construction conditions of the crossing point;

[0061] S2: if figure 2 , 3 As shown, the left-phase conductor 4, the right-phase conductor 5 and the ground wire 8 of the tower 1 on both sides of the high-speed rail 2 are respectively installed with safety wire sleeves 6, the wires adopt Φ17.5×25m safety wire sleeve 6, and the ground wire 8 adopts Φ1...

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Abstract

The invention discloses a method for replacing a ground wire across a high-speed rail by using an old wire sealing network, and relates to the field of methods for replacing an overhead power transmission line across a high-speed rail. The construction of replacing the ground wire across the high-speed railway usually adopts the method of setting up spanning frames on both sides of the high-speed railway to seal the network. This construction method has a long construction period and high construction cost. This method uses the old pole tower, adopts the stretching integrated machine with tension, and uses the old ground wire to drag and stretch the new wire one by one. There are 4 sub-conductors in one phase. There is a capping net protection below, and the capping net is arranged when the ground wire is replaced. The phase conductors and ground wires on both sides of the old tower on both sides of the crossing point are protected by binding steel wire sleeves to ensure that the accessories are also protected after the capping net is removed. This method does not need to build a spanning frame, does not need to arrange traction wire ropes, and has no guide rope and traction wire rope switching links, which can shorten the construction period, reduce construction costs, and improve construction safety.

Description

technical field [0001] The invention relates to the field of methods for replacing ground wires of overhead transmission lines across high-speed railways, in particular to a method for replacing ground wires across high-speed rails by using old wires to seal the network. Background technique [0002] With the rapid occurrence of high-speed rail, replacing the old conductors of the overhead transmission lines across the high-speed rail can better ensure the safe operation of the high-speed rail, but the construction period for replacing the ground wire across the high-speed rail is short and difficult, and the high-speed rail needs to be operated at night During the blank period, the construction can only start after the network is sealed above the electrical equipment on the track. Usually, the method of setting up spanning frames on both sides of the high-speed rail is used to seal the network. This construction method has a long construction period and high construction co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02G1/02
CPCH02G1/02
Inventor 董益中杨玉良王建国吴尧成楼辉朱侗杨国奇郑力维
Owner 浙江省送变电工程有限公司
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