Strain tower with shape like Chinese character 'gan' of compact transmission line

Abstract

The invention relates to a strain tower with a shape like a Chinese character 'gan' of a compact transmission line, comprising tower legs (8), a tower body (7), a tower head (13), a conducting wire strain string (11), a common jumper string (9) and a united jumper string (10), wherein a second conducting wire strain string (11-2) is connected with an upper-phase jumper suspension wire string (10-3) of the interphase united jumper string (10) by a second jumper (12-2), and a third conducting wire strain string (11-3) is connected with a lower-phase jumper suspension wire string (10-7) of the interphase united jumper string (10) by a third jumper (12-3). The invention has simple structure, increases the earth height of the lower-phase jumper, solves the detects of higher calling height, complicated structure and high self cost of the traditional compact type strain tower structure and reduces tree felling and earth and rock extraction. The compact ultra-high-voltage transmission line has more advanced technology, is more reasonable in economy and more environment-friendly in ecology.

Description

technical field [0001] The invention relates to an iron tower of an overhead power transmission line, more specifically, it is a compact dry-shaped tension tower of a power transmission line. Background technique [0002] With the continuous development of my country's ultra-high voltage power grid, new issues and new requirements have been put forward for the construction of transmission lines. my country's compact lines were initially only used in plain areas such as North China. Because of their advantages such as large transmission capacity and narrow line corridors, they have been widely promoted across the country in recent years. However, the type of tension tower used basically follows the original design scheme. In practical engineering applications, due to the air gap problem of the lower phase jumper, it is often necessary to cut down trees or excavate earth and rocks. At the same time, the existing compact tension tower The tower also has the disadvantages of hi...

AI Technical Summary

Problems solved by technology

However, the type of tension tower used basically follows the original design scheme. In actual engineering applications, due to the air gap problem of the lower phase jumper, it is often necessary to cut down trees or excavate earth and rocks. At the same time, the existing compact tension tower The tower also has the disadvantages of high height, complex structure, and high cost of the body.

[0003] Specifically, the existing compact line strain towers have the following disadvantages: ① Higher height: the height range of existing compact strain towers is generally 24m to 42m

② High cost of the main body: the structure of the existing compact tension tower is complex, and the cost of the main body is high

③. The air gap of the lower phase jumper of the existing compact tension tower is low, and the amount of tree felling is large

⑤. Large potential safety hazard: In extreme cases, the existing compact tension tower may have insufficient clearance between the upper phase wire tension string equalizing ring and the lower phase jumper bracket, which may easily cause potential safety hazards

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