Reinforced high-temperature resistant optical fiber composite overhead insulating cable

Abstract

The invention relates to a reinforced high-temperature resistant optical fiber composite overhead insulating cable, which comprises an electric flexible aluminum twisted wire serving as a conductor; a stainless steel tube optical unit and a carbon fiber composite reinforced core are arranged in the electric flexible aluminum twisted wire; and the outer side of the electric flexible aluminum twisted wire is coated with a high-temperature resistant insulating material. By the cable, a running temperature can be raised to above 180 DEG C and the tensile capability can be improved to 2,400MPa for a long time; and the cable has functions of communication, warning, information feedback and the like.

Description

Technical field [0001] The present invention belongs to overhead insulated cables, and particularly relates to the transformation and construction of overhead lines of urban and rural power grids. It can be a new type of overhead insulation that can withstand high-strength tension of 2400Mpa and allow long-term operating temperatures of over 180°C, and has communication and monitoring functions. cable. Background technique [0002] As we all know, conventional overhead insulated cables usually use copper stranded wire, aluminum stranded wire, aluminum alloy stranded wire, steel core aluminum stranded wire, etc. as the conductor, and the conductor is extruded to form an insulating layer. The tensile strength of the steel core aluminum stranded wire conductor The strength performance index is the best, which can achieve 1240Mpa-1410Mpa, but the air corridors that can be used in rural, mountainous and forest areas are gradually reduced, the distance between the poles and towers incr...

AI Technical Summary

Problems solved by technology

[0003] In recent years, cable companies have generally realized the shortcomings of overhead insulated cables, and are constantly exploring and improving them. For example, Chinese patent 200820178715.6 discloses a single or multi-strand steel wire as the central reinforcing core, and then twists aluminum or aluminum wires outside it. Alloy conductors still do not have the required tensile strength; and the structure of copper-clad steel and aluminum-clad steel strands used in Chinese patent 200920208822.3, the structure bears the tensile force or steel wire, compared with the aforementioned, there is no substantial difference. Improvement; in terms of photoelectric composite, Chinese patent 200920231879.5 discloses that the optical unit of the stainless steel tube is twisted into the conductor as a combination of communication and electric power, but it ignores that under high-strength tension, the line itself cannot bear enough tension to protect the light. The reliable operation of the unit is still unable to meet the safe operation of overhead insulated cables in complex geographical environments such as mountains and hills, and does not meet the high tensile strength, high temperature rise and current carrying capacity, and stability of communication functions of overhead insulated cables under the new situation. High "three high" requirements

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