Electrified spanning construction method for high-voltage line

A technology of high-voltage lines and construction methods, applied to overhead lines/cable equipment and other directions, can solve problems such as insufficient safety factor, complex mountain terrain, and indeterminate crossing time, so as to avoid conductors from falling, protect the lines being crossed, and ensure equipment and safety. The effect of construction safety

Inactive Publication Date: 2020-06-30
SICHUAN NO 2 ELECTRIC POWER CONSTR CO
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the construction of some high-voltage collector lines, due to coordination work, the crossing time is uncertain, and the power failure crossing method cannot be used; the mountainous terrain is complex, and the crossing frame method cannot be used; the safety factor is not enough if the lower sealing method is used

Method used

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  • Electrified spanning construction method for high-voltage line
  • Electrified spanning construction method for high-voltage line
  • Electrified spanning construction method for high-voltage line

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Embodiment Construction

[0031] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0032] The construction method for live crossing of high-voltage lines of the present invention comprises the following steps:

[0033] A. If figure 1 As shown, ground anchors 2 are buried on both sides of the spanned line 1. The depth of ground anchors 2 is 2.5m. When excavating, check whether there are underground pipelines and optical cable facilities nearby, and take effective avoidance measures.

[0034] B. Using the iron tower 3 of the high-voltage line as a spanning frame, there is no need to build another spanning frame, which reduces the construction amount and saves construction costs. Below the wire cross arm 4 of the iron tower 3, a horizontal holding pole 5 is arranged, the length of the holding pole 5 is greater than the wire cross arm 4 of the iron tower 3, and the two ends of the holding pole 5 exceed the two ends of the wire cross arm ...

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PUM

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Abstract

The invention provides an electrified spanning construction method for a high-voltage line. The electrified spanning construction method comprises the following steps that A, ground anchors are buriedin two sides of a spanned line respectively; B, iron towers of the high-voltage line serve as a crossing frame, holding poles is arranged below wire cross arms of the iron towers, and bearing tacklesis installed on the holding poles; C, a first bearing rope is pulled; D, a hanging basket is mounted to form an insulating sealing net; E, a second bearing rope is arranged between the wire cross arms of the two iron towers in a traction mode according to the method in the step C; F, a stay wire pulley block is assembled, the stay wire pulley block comprises a plurality of upper pulleys, and eachupper pulley is connected with a lower pulley; the stay wire pulley block is pulled to the position below the second bearing rope, and all the upper pulleys are installed on the second bearing rope;G, a wire is pulled, and the two ends of the wire is anchored on a wire cross arm; and H, the stay wire pulley block, the second bearing rope, the hanging basket and the first bearing rope are removed. The method is not limited by terrains and is suitable for crossed crossing pay-off and take-up construction of crossed lines which are high and cannot be powered off.

Description

technical field [0001] The invention relates to the technical field of electric power construction, in particular to a live crossing construction method of a high-voltage line. Background technique [0002] During the laying and laying construction of line conductors, it is often encountered that live running lines need to be crossed. In the construction method of crossing the live line, some adopt the crossing method of erecting a spanning frame, some adopt the crossing method of setting up a closed network, and some adopt the crossing method of power failure. In the construction of some high-voltage collector lines, due to coordination work, the crossing time is uncertain, and the power failure crossing method cannot be used; the mountainous terrain is complex, and the crossing frame method cannot be used; the safety factor is not enough if the lower sealing method is used. Contents of the invention [0003] The technical problem to be solved by the present invention is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02G1/02H02G1/04
CPCH02G1/02H02G1/04
Inventor 龙明杰
Owner SICHUAN NO 2 ELECTRIC POWER CONSTR CO
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