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Ice coverage preventing electricity transmission cable and production method therefor

A technology for power transmission cables and production methods, applied in the direction of insulating cables, insulating conductors/cables, cables, etc., can solve problems such as aggravation, large manpower, material resources and time consumption, and increased infrastructure investment

Inactive Publication Date: 2009-05-06
XIANGTAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Improving design standards will double infrastructure investment, while melting ice and deicing will consume a lot of manpower, material resources and time
The most deadly problem is that these methods do not fundamentally eliminate ice and snow adhesion in the bud, or suppress ice and snow generation from the source, but on the premise that rain and snow adhesion on lines and icing on power grids have already occurred, or even wait for the ice to be covered. Defending passively with increasing ice weight

Method used

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  • Ice coverage preventing electricity transmission cable and production method therefor

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Embodiment Construction

[0010] The present invention will be further described below in conjunction with embodiment:

[0011] Such as figure 1 As shown, a kind of anti-icing power transmission cable 1 is coated with n-hexadecane hydrophobic layer 2 on the surface of power transmission cable 1. Surface microstructure width a=2~4μm, microstructure spacing b=4~6μm, microstructure height h=4~6μm, fractal nanostructure width a’=100~150nm, nanostructure spacing b’=200~300nm , the nanostructure height h'=150-250nm.

[0012] A kind of production method of anti-icing power transmission cable, utilizes the evaporation coating technology in the physical vapor deposition method (PVD) to coat the surface of the power transmission cable, put the cable bare wire (aluminum-clad steel strand, copper-clad steel wire, etc.) into a vacuum Room (-5 ), put the evaporation source material n-hexacane into the heater, slowly increase the temperature of the heater until the evaporation source material is completely liquefie...

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Abstract

The invention discloses an ice-coating resistant transmission cable and a manufacturing method thereof, and super-hydrophobic preparation technology is applied to a cable. The n-hexatriacontane of the adopted coating material is saturated alkanes, belongs to chemical inert material and has a good tolerance to the environment; in addition, the n-hexatriacontane is a hydrophobic material and has a low surface energy of only 20 mJ / m<2> . Because PVD technology is utilized to form a super-hydrophobic layer on the surface of a cable, the technology has no special requirement for the cable material components and thus wide applicability is available. After a super-hydrophobic layer is formed, rain water or wet snow is hard to adhere to the surface of a cable; therefore, the occurrence of an ice-coated grid is fundamentally inhibited; on the other hand, even if a small quantity of water droplets condenses on the surface of a cable, the formation of initial frost crystals is greatly delayed because the contact angle formed by water droplets is very large, which is conductive to avoid the occurrence of destructive frozen disasters; moreover, the formed frost crystals are loose in structure and easier to remove.

Description

technical field [0001] The invention relates to a power transmission cable and a production method. Background technique [0002] my country is one of the countries most seriously threatened by icing disasters on transmission lines, and the probability of ice damage accidents is very high. Especially since the beginning of winter in recent years, the southern region often suffers from continuous low temperature, rain and snow, which makes the power lines seriously covered with ice and the power equipment suffers huge damage. According to incomplete statistics, only from mid-January to early February 2008, a total of 35,968 lines and 1,731 substations were out of service nationwide due to snow disasters, and 8,868 towers of 110 kV to 500 kV lines were downed. The partial collapse caused the transportation system of 17 provinces and regions in the central, southern and eastern regions to be paralyzed, bringing huge losses to the development of the national economy and people'...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B7/28H01B13/32C23C14/12C23C14/24
Inventor 李文方国平王秀锋崔晓松周益春
Owner XIANGTAN UNIV
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