330kV/110kV mixed voltage four-circuit narrow-base steel pipe suspension tower

Abstract

The invention discloses a 330kV / 110kV mixed voltage four-circuit narrow-base steel pipe suspension tower. The tower comprises a steel structure tower body, steel structure tower legs are arranged at the bottom of the steel structure tower body, a one-layer steel structure ground line cross arm is arranged at the top of the steel structure tower body, a six-layer steel structure conductor cross armis arranged on the steel structure tower body under the steel structure ground line cross arm, the six-layer steel conductor cross arm comprises an upper three-layer conductor cross arm and a lower three-layer conductor cross arm arranged separately from top to bottom, the upper three-layer conductor cross arm is hanged two 330kV conductors on the left and right sides of the tower body, the lowerthree-layer cross arm is hanged two 110kV conductors on the left and right sides of the tower body, 3m-4m, the position, close to the lowest layer cross arm, of the steel structure tower body is provided with a once slope change, and the root of the tower is 3m-4m. According to the tower, the corridor width of a line is greatly reduced, and the problem of the tension of the line corridor in an urban planning area and a suburban area is solved. A line floor area is reduced, the investment is saved, and the well coordinated with the urban construction and development environment is achieved.

Description

technical field [0001] The invention relates to a power transmission tower structure, in particular to a 330kV / 110kV mixed pressure four-circuit narrow-base steel pipe suspension tower. Background technique [0002] In recent years, with the continuous expansion of the city, the electricity consumption in the city has also increased sharply. Due to the limitation of the line corridor, it is necessary to lay power transmission lines in green belts or towns, and run parallel to the existing old lines. The traditional angle-steel structure iron tower is difficult to meet the requirements. In order to reduce land acquisition as much as possible and coordinate with urban development planning, it is urgent to design a four-circuit narrow base tower. The application of narrow base towers can well solve the conflict between the land occupation of high-voltage transmission towers in urban areas and urban planning, and at the same time solve the problem of excessive investment in line...

AI Technical Summary

Problems solved by technology

For 110kV and above line projects, especially double-circuit and multi-circuit projects, due to the large load, although the use of steel pipe poles can meet the land occupation requirements of the corridor, the pipe diameter is too large (about 2m) and the wall thickness increases a lot, which is economical. Poor sex

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