Suspension insulator slide hanging groove device for overhead transmission line
A technology for overhead transmission lines and pendant insulators, which is used in cable suspension devices, adjusting/maintaining mechanical tension, etc., can solve the problem of power grid operation and social security threats to the economy, low longitudinal unbalanced tension of wires, and damage to pendant tower structures, etc. problems, to achieve the effect of improving the ability to resist longitudinal unbalanced tension, improving line economy, and improving safety
Active Publication Date: 2017-08-18
HUZHOU ELECTRIC POWER SUPPLY CO OF STATE GRID ZHEJIANG ELECTRIC POWER CO LTD +2
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Problems solved by technology
[0004] As the medium for the transmission of wire tension to the tower, the conventional suspension insulator can only rotate around the hanging hole, its offset is quite limited, and the longitudinal unbalanced tension of the wire that can be offset is very small. When the longitudinal unbalanced tension of the wire exceeds the design limit At the same time, the cases of structural damage of overhanging towers are not uncommon, which pose a great security threat and economic harm to the operation of the power grid and the people's livelihood.
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[0027] Such as figure 1 As shown, the suspension insulator string is composed of three suspension insulators 1 distributed in a Y shape, in which the two suspension insulators 1 on the upper side are suspended on the tower head 3 of the iron tower, and the overhead transmission conductor 4 is suspended at the bottom of the suspension insulator 1 .
[0028] Such as Figure 1 to Figure 3 As shown, in order to offset the longitudinal unbalanced tension of the overhead power transmission conductor 4, a hanger 2 is provided on the tower head 3 of the iron tower, and a balance track is provided on the hanger 2. The balance track is provided with a height difference, and the top of the suspension insulator 1 is provided with The balance roller 12 is arranged on the balance track. When the longitudinal unbalanced tension of the overhead power transmission conductor 4 occurs, the balance roller 12 slides along the balance track to automatically eliminate the longitudinal unbalanced te...
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The invention discloses a sliding hanging groove device for a suspension insulator of an overhead power transmission line. The bottom end of the suspension insulator is hung with an overhead power transmission wire, and the top end is hung on the head of an iron tower. A hanger is arranged on the head of the iron tower. The track and the balance track are provided with a height difference, the top of the suspension insulator is provided with a balance roller, and the balance roller is arranged on the balance track. The invention solves the problem of automatic release of the longitudinal unbalanced tension of the suspension type tower of the high-voltage transmission line in the heavy ice area, greatly improves the safety of the line, and improves the operation quality and efficiency of the line.
Description
technical field [0001] The invention relates to a connection technology between a suspension insulator and an iron tower of a high-voltage overhead transmission line. Background technique [0002] So far, the suspension insulators of domestic high-voltage overhead transmission lines and iron towers are connected by hanging holes, and the insulators can only rotate around the hanging holes. [0003] In the high-voltage transmission lines in heavy ice-covered areas, most of the ice-damaged tower collapse accidents occurred on the suspension towers, and the control conditions of more than 95% of the rod structure calculations of the suspension towers were caused by uneven icing of the conductors. Longitudinal unbalanced tension, that is, tower structure damage and tower collapse accidents in overhead transmission lines in heavy ice areas are basically caused by the overrun of conductor longitudinal unbalanced tension. [0004] As the medium for the transmission of wire tension...
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IPC IPC(8): H02G7/02H02G7/05
Inventor 朱奕弢潘少良张文杰曹建伟卞荣蒋锋王伟蒋伟
Owner HUZHOU ELECTRIC POWER SUPPLY CO OF STATE GRID ZHEJIANG ELECTRIC POWER CO LTD