Process for forming medium-voltage cable with copper strip as shield and optical fiber for temperature measurement as well as compounded with communication

Abstract

The invention discloses a process for forming a medium-voltage cable with a copper strip as a shield and an optical fiber for temperature measurement as well as compounded with communication. The process comprises the steps of: twisting 18 single copper wires on a surface of a central single copper wire to form a round conductor; generating three co-extruded composite layers on the surface of theround conductor in the first step through a peroxide cross-linking method; lapping the copper strip serving as a shield on the surface of the round conductor in the second step; longitudinally lapping a temperature measuring optical fiber unit which is composed of single mode optical fibers or multi-mode optical fibers with 1-48 cores by a stainless steel tube, and coating waterproof fiber paste between the stainless steel tube and the temperature measuring optical fiber unit; coating a communication optical fiber unit which is composed of single mode optical fibers with 1-128 cores through aloose bushing; and producing a first filling strip, a second filling strip and a third filling strip from polyvinyl chloride, polypropylene, polythene, or halogen-free low-smoke plastics by an extruder. The medium-voltage cable forming process disclosed by the invention not only integrates the tubular temperature measuring unit to monitor operating and working load of the medium-voltage cable in real time, but also realizes multi-network collection of power network, telecommunication network, TV and Radio networks and Internet.

Description

technical field

[0001] The invention relates to a power cable, in particular to a cabling process of a copper tape shielded optical fiber temperature measurement and communication composite medium-voltage cable. Background technique

[0002] In recent years, cable fire accidents have occurred frequently. According to relevant statistics, in the past 20 years, there have been more than 140 cable fires in thermal power plants in my country. There were 2 or more cable fire accidents in 24 power plants, and 4 to 6 accidents in individual power plants. The losses caused by more than 70% of cable fires are very serious, and 40% of the fire accidents cause extraordinarily large losses. According to incomplete statistics, the direct and indirect economic losses caused by power cable accidents in the domestic power industry amount to billions of RMB every year. The direct cause of cable fire is often caused by poor quality of cable joints, loose crimping, excessive contact resistan...

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