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Oval-cross-section type low-wind-pressure lead

A technology of elliptical cross-section and wire, which is applied in the field of wire, can solve the problems of large capital investment and limitation of wind resistance effect, and achieve the effects of reducing wind pressure coefficient, improving wind pressure resistance performance, and low production cost

Inactive Publication Date: 2017-09-08
CHINA ELECTRIC POWER RES INST +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Under strong wind conditions, relying solely on improving structural strength to reduce wind loads requires a large capital investment, and the wind resistance effect is limited

Method used

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  • Oval-cross-section type low-wind-pressure lead
  • Oval-cross-section type low-wind-pressure lead

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Such as figure 1 As shown, a low-wind-pressure conductor with an elliptical cross-section, the conductive single wire cross-section in the outer conductor is an equiangular shaped wire structure. That is to say, the conductive single wires in the outer conductor are twisted and arranged according to the angles at which the cross sections of the conductive single wires are equal.

[0027] From the inside to the outside are the reinforcing core and the 3-layer conductive single wire twisted in the outer layer. The cross section of the conductive single wire formed by twisting the conductive single wire is oval, and the conductive single wire stranded in the outer layer is the inner layer conductor, the middle layer conductor and The outer layer conductor; the conductive single line section of the outer layer conductor is an equiangular shaped line structure.

[0028] The reinforcing core is a core wire made of extra-high-strength galvanized steel wires twisted. There ar...

Embodiment 2

[0031] Such as figure 2 As shown, a low wind pressure wire with an elliptical cross section, the conductive single wire cross section in the outer conductor is a shaped wire structure with a constant cross section. That is to say, the conductive single wires in the outer conductor are twisted and arranged according to the equal cross-sectional area of ​​the conductive single wires.

[0032] From the inside to the outside are the reinforcing core and the 3-layer conductive single wire twisted in the outer layer. The cross section of the conductive single wire formed by twisting the conductive single wire is oval, and the conductive single wire stranded in the outer layer is the inner layer conductor, the middle layer conductor and The outer layer conductor; the cross section of the conductive single wire of the outer layer conductor is a profiled wire structure of equal cross section. The reinforcing core is a core wire twisted with high-strength aluminum-magnesium-silicon al...

Embodiment 3

[0035] The utility model relates to a low-wind-pressure wire with an elliptical cross-section. The cross-section of the conductive single wire in the outer conductor is a molded wire structure with a constant cross-section. That is to say, the conductive single wires in the outer conductor are twisted and arranged according to the equal cross-sectional area of ​​the conductive single wires.

[0036] From the inside to the outside are the reinforcing core and the 4-layer conductive single wire twisted in the outer layer. The cross section of the conductive single wire formed by twisting the conductive single wire is oval, and the conductive single wire stranded in the outer layer is the inner layer conductor, the middle layer conductor and The outer layer conductor; the cross section of the conductive single wire of the outer layer conductor is a profiled wire structure of equal cross section. The reinforcing core is a core wire formed by twisting aluminum-clad steel wires. Th...

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Abstract

The present invention provides an oval-cross-section type low-wind-pressure lead. The lead sequentially comprises one to multiple layers of conductive single wires twisted with an intensified core and an outer layer from inside to outside. The conductive single wires are twisted to form a lead and the cross section of the lead is oval. The conductive single wires twisted with the outer layer comprise an inner-layer conductor, a middle-layer conductor and an outer-layer conductor. The cross sections of the conductive single wires of the outer-layer conductor are uniform in angle or in cross section, and the conductive single wires of the outer-layer conductor are molded wires. According to the technical scheme of the invention, the single wires of the outer-layer conductor, at the long axis of the oval cross section of the lead, are rounded off, so that the cross-sectional areas of the molded single wires can be better controlled. The roughness of the surface of the lead is increased. The wind pressure resistance of the lead is improved. The low-wind-pressure lead is better in aerodynamic characteristics, and the wind pressure coefficient can be obviously reduced. The advantages of low wind pressure, low noise and the like are realized. The oval-cross-section type low-wind-pressure lead is simple in manufacture and construction process, convenient in operation, strong in practicability and low in production cost.

Description

technical field [0001] The invention relates to a wire, in particular to a low-wind-pressure wire with an elliptical cross-section. Background technique [0002] Overhead transmission lines send electric energy from the power generation end to the power receiving end through wires, and inevitably consume part of the energy while transmitting electric energy. Most of my country's power generation bases are concentrated in the west, and the load center of electricity consumption, the main Cities, industrial and mining enterprises are concentrated in the eastern coastal area, and long-distance large-scale power transmission is even more important for line energy conservation and reduction of energy consumption. [0003] With the implementation of my country's west-to-east power transmission strategy, more and more transmission lines pass through the northwest windy area, and the northwest windy condition puts forward higher requirements for the safety and reliability of transmis...

Claims

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Application Information

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IPC IPC(8): H01B5/10H01B9/00
CPCH01B5/104H01B9/006H01B9/008
Inventor 刘臻王召林朱宽军周立宪刘胜春刘彬刘龙李冬青司佳钧李新民杨加伦齐翼尹泉孙宝东李震
Owner CHINA ELECTRIC POWER RES INST
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