Insulated high-voltage optical fiber composite power cable

Abstract

The invention discloses an insulated high-voltage optical fiber composite power cable, comprising a solid aluminum conductor in the center of the cable, wherein four first solid aluminum shaped wires and then an annular second solid aluminum shaped wire are extruded outside the solid aluminum conductor; a low density polyethylene insulating layer is extruded outside the second aluminum shaped wire, a double-layer water blocking tape is superposed and lapped, a corrugated aluminum sheath is welded outside the water blocking tape, an alkali-free glass fiber tape is lapped outside the corrugated aluminum sheath, and a medium density polyethylene outer sheath is finally extruded at the outermost layer of the cable; and an optical fiber is arranged in each first solid aluminum shaped wire. The composite power cable has the characteristics of good water blocking performance, good corrosion, oxidation and heat resistance, no mechanical damage and the like, the temperature and the transmission load of the power cable can be monitored in real time, and the power cable can be used for 'three-network fusion'.

Description

technical field [0001] The invention relates to the field of cables, in particular to an insulated high-voltage optical fiber composite power cable. Background technique [0002] With the soaring price of copper, the price difference between copper and aluminum is getting bigger and bigger, and the power industry has begun to pay attention to the use of aluminum conductors. The current general situation in my country's cable industry is only 5 ~ 16 mm 2 Conductor adopts solid conductor, while 25 mm 2 The above uses stranded conductors. In the traditional manufacturing process of aluminum core conductors, aluminum ingots need to be drawn into aluminum rods, and the aluminum rods are drawn into aluminum single wires through a wire drawing process. To reduce the gap between the conductor single wires and improve the water resistance performance, the conductor often needs to be pressed tightly. This stranded conductor has the following obvious defects: (1) Aluminum is easy t...

AI Technical Summary

Problems solved by technology

This stranded conductor has the following obvious defects: (1) Aluminum is easy to oxidize, which reduces the performance of the conductor and affects the service life. The aluminum single wire and the cumbersome processing process increase the contact surface and degree of contact with air and mechanical oil, so Easy to oxidize; (2) The process is complicated, the processing process is cumbersome, there are many equipments, it takes up a lot of production and storage space, the production organization is difficult, the production efficiency is low, the energy consumption is high, and the labor cost is high, which increases the risk of logistics loss and quality control; (3) The increase in the processing process will easily cause mechanical damage to the surface, which will cause surface discharge. Repeated processing will also increase the thermal stress of the conductor, making the conductor hard and reducing the conductivity of the conductor; (4) Stranded conductor The gap between them is large, and the water resistance performance is reduced; (5) The outer diameter of conductors and cables is increased, occupying the laying space

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