High-strength power cable

Abstract

The invention discloses a high-strength power cable. The high-strength power cable comprises cable cores, and each cable core is formed by stranding of three insulated wire cores. Filler is arranged in gaps of the cable cores, a wrapping tape layer is wrapped outside the cable cores, an isolating layer and an armor layer are sequentially wrapped outside the wrapping tape layer in an extruded mode, and an outer protective jacket is wrapped on the outermost layer of the cable in an extruded mode. Each insulated wire core is composed of a conductor, an inner shielding layer, an insulating layer, an outer shielding layer and a metal shielding layer, wherein the inner shielding layer, the insulating layer, the outer shielding layer and the metal shielding layer are sequentially wrapped outside the conductor in an extruded mode. The high-strength power cable has the advantages of being good in conductivity, high in mechanical performance, creeping and aging resistant, high temperature resistant, good in corrosion resistant performance, long in service life, and the like, and is suitable for voltage classes of 0.6KV-35KV and dry or humid sites with temperature of 200 DEG C, 180 DEG C, 105 DEG C and 90 DEG C or below; and the high-strength power cable can be installed indoors or outdoors, also can be installed in a vertical mode or in a supported mode or in a laid mode along a wall, and even can be installed underground in a directly buried mode.

Description

[0001] technical field [0002] The invention relates to the field of wires and cables, in particular to a high-strength power cable. Background technique [0003] Since 2004, about 10% of my country's aluminum needs to be exported every year, and the production capacity is seriously overcapacitated. At the same time, according to statistics from the National Development and Reform Commission: from 2004 to 2006, my country's annual copper shortage exceeded 1.3 million tons; according to China's 2008 statistics According to the Yearbook data, in 2007 my country imported 4.52 million tons of copper ore and refined copper, and the import value of copper and its products was 27.1 billion US dollars. my country's copper metal market has been heavily dependent on imports. China's inexhaustible demand for copper has led to rising international copper prices. Chinese companies have also gone abroad with unprecedented enthusiasm, acquired foreign mining companies, and exploited foreig...

AI Technical Summary

Problems solved by technology

[0004] The shortcomings of the existing pure aluminum conductor power cables are mainly reflected in the following aspects: (1) poor mechanical strength, easy to break; (2) easy to creep, requiring frequent tightening of screws; Hidden dangers; (4) The terminals used for pure aluminum cables are not specially treated, and electrochemical corrosion may occur at the connection with copper bars

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