Corrosion-proof vibration-proof wire

Abstract

The invention relates to an improvement of anti-corrosion and anti-vibration overhead power transmission cables for overhead power transmission lines and is characterized in that the reinforced inner core of the twisted cable is a fiber resin-molded elongated body and has a 0.5-8 mm distance to the innermost conductor of the twisted cable. The inventive wire has the advantages of self-damping vibration protection function, reduced weight of the reinforced core molded from resin mixed with carbon fiber and / or basalt fiber (50-70 percent of the steel-core anti-corrosion and anti-vibration cable core), increased tensile strength (up to 2000-6000MPa), maximum applied stress up to 60 percent of breaking strength, reduced base number or altitude of towers, larger construction span, large current capacity (about doubled), reduced construction cost (by 10-20 percent), and increased service life (by 20-30 years).

Description

Technical field: [0001] The invention relates to the improvement of corrosion-resistant and anti-vibration overhead transmission wires for overhead transmission lines. Background technique: [0002] In order to effectively ensure high tensile strength and good electrical conductivity, overhead power transmission wires usually use galvanized steel wires (such as Chinese patent 93208954.2 corrosion-resistant steel core stranded wires) or aluminum-clad steel stranded wires as reinforced inner cores. The outer strands have electrical conductors such as aluminum or aluminum alloy. The wires of this structure are used for long-term laying overhead, and the reinforced inner core will be corroded by the intrusion of moisture and corrosive gases, and will be damaged due to resonance caused by breeze vibration. In the prior art, anti-corrosion grease is applied between the steel core wire and the aluminum conductor stranded wire to prevent rainwater, moisture and corrosive gas from c...

AI Technical Summary

Problems solved by technology

The corrosion-resistant and anti-vibration conductor is still reinforced by a steel core, so the weight is still relatively large, and the erection sag is still relatively large, so it still cannot be used for large-gear erection; secondly, the service life of the steel core is relatively short, generally only 30 years Or so; moreover, this wire is only for corrosion resistance and anti-vibration. Affected by the thermal expansion of the steel core, it still has the same low operating temperature as the existing wires. Generally, it is only about 70°C, and the maximum does not exceed 100°C. The transmission capacity of the wire is still not high. ; In addition, the reinforced steel core is an electrical conductor, which not only generates eddy currents and consumes electric energy, but also has large electromagnetic radiation and poor environmental protection; therefore, it is still worth improving

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