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Double-pulley hanging method for synchronously unfolding ultrahigh-voltage multi-bundled conductor

A multi-split, UHV technology, applied in the direction of overhead lines/cable equipment, etc., can solve problems such as the problem of double trolley setting-out, and achieve significant economic benefits, improve construction efficiency, and save time.

Inactive Publication Date: 2014-01-15
STATE GRID CORP OF CHINA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The purpose of the present invention is to provide a method suitable for synchronous deployment of UHV multi-split conductors and double trolley suspension, which solves the existing four-split, six-split, and eight-split conductor double-trolley suspension problems, and greatly reduces the use of accessories. Convenience and improve construction efficiency

Method used

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  • Double-pulley hanging method for synchronously unfolding ultrahigh-voltage multi-bundled conductor
  • Double-pulley hanging method for synchronously unfolding ultrahigh-voltage multi-bundled conductor
  • Double-pulley hanging method for synchronously unfolding ultrahigh-voltage multi-bundled conductor

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Embodiment Construction

[0069] The present invention utilizes the connecting board under the hanging series of insulators. In this embodiment, the connecting board adopts a six-connecting board (for a four-split conductor, it is a four-connected board, and for an eight-split conductor, it is an eight-connected board). , two identical pay-off blocks are suspended, and the parallel hanging plate on the pay-off block adopts a special lengthened parallel hanging plate. Like this, no matter how many split wires, as long as the synchronous deployment is adopted, the method of the present invention can be adopted.

[0070] This embodiment is designed with a six-split wire as a sample, and it is used for trial in a ±800 kV UHV DC transmission project. Other four-split and eight-split wires can be implemented as a reference.

[0071] The present invention utilizes the hanging point hanging holes of the sub-conductors on both sides of the six-connected plate under the V-shaped hanging string of the iron tower ...

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Abstract

The invention discloses a double-pulley hanging method for synchronously unfolding an ultrahigh-voltage multi-bundled conductor. In the double-pulley hanging method, a connecting plate is used, wherein hanging holes with the same number of bundles of a conductor are formed on the outer periphery of the upper edge of the connecting plate; the hanging holes are used as hanging points; a hanging hole on the left side of the connecting plate and a hanging hole on the right side of the connecting plate are used as the hanging points for hanging two pulleys; the two hanging points have the same height; the hanging points are connected with the pulleys through parallel hanging plates; and the hanging points are connected and fixed with the parallel hanging plates through bolts. By the double-pulley hanging method, when a linear tower has an angle and the linear tower is adjacent to a tension tower, the pulleys deflect towards the inner corner sides and the two parallel hanging plates rightly clamp the connecting plate, so as not to affect flexible deflection of the pulleys, and perfectly solve the problems of circuit steering and pulley deflection.

Description

technical field [0001] The invention relates to the field of pay-off pulleys, in particular to a double pulley suspension method suitable for UHV multi-split conductors. Background technique [0002] For a long time, the construction of overhead transmission lines has been dominated by labor and simple machinery. With the development of science and technology, the degree of mechanization of transmission line construction is gradually increasing. With the rapid development of China's economy, the demand for electricity is increasing, and the voltage level of overhead transmission lines is also gradually increasing. In the process of ±500kV→±660kV→±800kV, and there is still an upward trend, the number of conductor splits in transmission lines also increases, from the initial single conductor to double-split conductors, four-split conductors, six-split conductors and eight-split conductors. The cross-section of the conductors is also gradually increased, and there are one-lead...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02G1/02
Inventor 景国明
Owner STATE GRID CORP OF CHINA
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