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Arrangement method and system of anti-thunder skynet of hydropower station hoisting equipment

A technology of lifting equipment and arrangement method, which is applied to the installation of cables, electrical components, and installation of lighting conductors, etc., which can solve the problems that the lifting equipment of hydropower stations is vulnerable to lightning strikes, etc., achieves remarkable practical application effects, short construction period, and ensures construction quality effect

Pending Publication Date: 2018-07-20
CHINA THREE GORGES PROJECTS DEV CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there are no relevant reports on lightning protection nets for lifting equipment of hydropower stations at home and abroad. The invention solves the technical problem that lifting equipment of hydropower stations is vulnerable to lightning strikes

Method used

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  • Arrangement method and system of anti-thunder skynet of hydropower station hoisting equipment
  • Arrangement method and system of anti-thunder skynet of hydropower station hoisting equipment
  • Arrangement method and system of anti-thunder skynet of hydropower station hoisting equipment

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Effect test

Embodiment

[0062] (1) Arrangement of lightning protection lines: Taking 4 lifting equipment as an example, all 4 lifting equipment adopt translational type, the working condition of lifting installation is 25t, the working condition of pouring is 20t, the span of lifting equipment is about 500m, and the left and right bank platforms The elevation is 3375.00m, the altitude of the main vehicle of the lifting equipment is 3386.55m, the altitude of the auxiliary vehicle of the lifting equipment is 3384.872m, and the length of the tracks on both sides is about 156.00m. The lightning protection grounding overhead lightning protection line is arranged above the four lifting equipment, and the lightning protection covers the operating range of the four lifting equipment.

[0063] Determine the minimum number n of lightning conductors. L=156.00m, according to the operating environment of the lifting equipment, the length margin δ=5m can be taken, H 0 =3375.00m, H=3384.872m, substituting into the...

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Abstract

The invention discloses an arrangement method and system of an anti-thunder skynet of hydropower station hoisting equipment. Multiple GJ-50 lightning conductors are adopted for covering the operationrange of all hoisting equipment. The lightning conductors are arranged in parallel, are parallel to traction ropes of the hoisting equipment and are perpendicular to main / secondary vehicle of the hoisting equipment; the lowest height above sea level protected by the lightning conductors is higher that of the main / secondary vehicle of the hoisting equipment, so that the skynet can cover the operation range of the hoisting equipment. The lightning conductors, and the lightning conductors and circular steel are connected and fixed by rope clamps, and circular steel and grounding flat steel are welded; when the lightning conductors are mounted across a river, the lightning conductors are bundled and fixed by steel wires and then pulled down by a winch; and after the lightning conductors are pulled to the opposite bank, the lightning conductors are pulled to positions corresponding to anchoring piles by hemp ropes, and the lightning conductors are fixed. The arrangement method and system have the obvious advantages of reliable anti-thunder effect, high popularization degree, short construction period and low erection cost.

Description

technical field [0001] The invention relates to the technical field of lightning protection for weak current equipment, in particular to a lightning protection device for a lightning protection net for lifting equipment directly struck by lightning. Background technique [0002] Lifting equipment refers to a type of engineering crane in which a lifting trolley with a pick-up device runs along an overhead load-bearing cable. On construction sites of hydropower stations, lifting equipment is usually arranged at the highest point of all construction equipment and hydraulic structures, so it is vulnerable to lightning strikes. The lifting equipment at the construction sites of domestic Goupitan, Jinping, Xiluodu, Xiangjiaba, Dagangshan and other hydropower stations have been struck by lightning many times, resulting in damage to the electrical, communication and control system equipment, resulting in the shutdown of the lifting equipment. affect construction. In addition, the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02G13/00
CPCH02G13/00
Inventor 张世保周文俊王毅华姚汉光夏大勇王励高鹏谭志国
Owner CHINA THREE GORGES PROJECTS DEV CO LTD
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