1kV energy-saving type large-span high-conductivity low-noise weather-proof overhead insulation cable

Abstract

The invention discloses a 1kV energy-saving type large-span high-conductivity low-noise weather-proof overhead insulation cable. The cable comprises an aluminum-clad steel core reinforcement core layer and a high-conductivity composite aluminum conductor layer. The aluminum-clad steel core reinforcement core layer and the high-conductivity composite aluminum conductor layer are combined into a composite conductor. The aluminum-clad steel core reinforcement core layer comprises seven aluminum-clad steel core reinforcement cores which are arranged in a '1+6' manner. The high-conductivity composite aluminum conductor layer is formed by combining an outer layer comprising 12 high-conductivity composite aluminum conductors and an outer layer comprising 18 high-conductivity composite aluminum conductors. An irradiation crosslinking polyethylene inner insulation layer and an improved weather-proof insulation outer insulation layer are successively extruded on the exterior of the high-conductivity composite aluminum conductor layer. Nanometer micro-spiral wind guiding grooves are arranged in the outer surface of the improved weather-proof insulation outer insulation layer in a hot stampingmanner. The insulation cable is excellent in electrical performance, insulation performance, mechanical performance and low-noise performance.

Description

technical field [0001] The invention relates to a 1kV energy-saving large-span high-conduction low-noise weather-resistant overhead insulated cable, specifically a long-distance transmission line used in the open air, in the field, and with a large span, which can reduce line loss and is suitable for new line projects and The old line reconstruction project is especially suitable for harsh environments such as coastal areas and heavy pollution areas. It has strong corrosion resistance, small overhang at high temperature, high electrical conductivity, excellent insulation performance, reflective performance, UV protection, low noise, and superior bending resistance. , good thermal stability, cost-effective energy-saving large-span high-conductivity low-noise weather-resistant aerial insulated cables. Background technique [0002] The conductors of traditional overhead insulated cables are ordinary aluminum, and there is no design and development of high-conductivity composite...

AI Technical Summary

Problems solved by technology

The insulation layer does not use improved weather-resistant overhead insulation materials. When used in harsh weather environments such as the field, the open air, and strong sunlight, the cable itself consumes a lot of energy, has poor weather resistance, poor insulation performance, and large ultraviolet radiation damage.

There is no nano-micro-spiral air guide groove on the surface of the traditional overhead cable insulation layer, which cannot guide the wind direction, resulting in large noise, disturbing the residents and polluting the environment.

Traditional overhead cables have low cost performance, backward technology and waste of labor

[0003] The following problems exist in the production technology of traditional overhead insulated cables: 1. The conductor material and processing technology are backward, and there is no combination conductor with strong corrosion, small high-temperature overhang, and low resistivity. 2. The insulating material is a traditional material without improvement. Poor weather resistance, easy to cause moisture in the insulation, water branches, and large damage from ultraviolet radiation; 3. There is no nano-micro spiral air guide groove on the surface of the insulation layer of traditional overhead cables, which cannot guide the wind direction, resulting in loud noise, disturbing people and noise pollution Environment; 4. Large consumables per unit length, high cost, low cost performance, waste of national resources and social labor

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