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Large-span disassembly method of transmission circuit over navigable water level

A transmission line and large-span technology, applied in the direction of overhead lines/cable equipment, etc., can solve problems such as difficult construction, tight construction time, and large spans of power transmission lines, so as to shorten construction time, reduce construction difficulty, and improve construction safety effect

Active Publication Date: 2017-05-31
浙江省送变电工程有限公司 +2
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Problems solved by technology

[0002] With the progress of society and the development of power grid construction, the construction of transmission lines is also undergoing rapid changes. Due to the government's planning and the needs of power grid construction, many transmission lines that were originally built across large rivers or strait harbors will be optimized or demolished. Reconstruction, due to the large span of power transmission lines across a wide water surface, and the navigation requirements of many rivers or straits, the construction time is tight, and it is difficult to demolish the old construction with large spans under special circumstances, and there is no precedent in previous projects. Searching

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  • Large-span disassembly method of transmission circuit over navigable water level
  • Large-span disassembly method of transmission circuit over navigable water level
  • Large-span disassembly method of transmission circuit over navigable water level

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Embodiment Construction

[0025] The technical solution of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0026] Such as figure 1 As shown, the large-span demolition method of the transmission line above the navigable water surface includes the following steps:

[0027] Step A1: Construction preparation and navigation closure. Before the old line is dismantled and constructed, transport the relevant tools and equipment in place. Accurately collect relevant meteorological information and tide information in the construction area according to the determined planned time. The old line should be removed according to the tide. The timetable is to choose the flat tide period first, and the navigation must be closed before the demolition and construction, and the closed navigation operation sign should be set;

[0028] Step A2, remove the accessories of the spanning tower and hang the tackle, the accessories of the ground wire cable are as fol...

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Abstract

The invention provides a large-span disassembly method of a transmission circuit over a navigable water level, and relates to the large-span disassembly method of the transmission circuit. The previously constructed transmission circuits crossing rivers, lakes or straits have large difficulty for optimized transformation or disassembly reconstruction. The method comprises the following steps: (1) preparing construction and closing navigation; (2) disassembling accessories of conductors and shield wires of a crossing tower, and erecting a pulley; (3) releasing the conductors and shield wires of an anchor tower; (4) carrying out releasing and breaking operation of the conductors and shield wires of the crossing tower; (5) reclaiming used wires, and breaking the conductors and shield wires of the anchor tower and the crossing tower; and (6) detaching the crossing tower. By adopting the method, large-span disassembly construction with navigation requirement can be safe, convenient and quick, and an excellent method reference is provided to similar large-span transformation construction of transmission circuits.

Description

technical field [0001] The invention relates to a method for dismantling a large-span transmission line, in particular to a method for dismantling a large-span transmission line above a navigable water surface. Background technique [0002] With the progress of society and the development of power grid construction, the construction of transmission lines is also undergoing rapid changes. Due to the government's planning and the needs of power grid construction, many transmission lines that were originally built across large rivers or strait harbors will be optimized or demolished. Reconstruction, due to the large span of power transmission lines across a wide water surface, and the navigation requirements of many rivers or straits, the construction time is tight, and it is difficult to demolish the old construction with large spans under special circumstances, and there is no precedent in previous projects. Searching. Contents of the invention [0003] The technical probl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02G1/02
CPCH02G1/02
Inventor 张江宏蔡国治周勇吴水亮李靖飞张李滨王成波王静威楼额尔谢天麟沈国平丁鹏杰
Owner 浙江省送变电工程有限公司
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