Aluminum armored power cable and its production equipment and production process

Abstract

The invention provides an aluminum armored power cable as well as production equipment and a production technology of the cable. The production equipment is a twisting and wrapping device of the cable, wherein the twisting and wrapping device twists an insulated wire core of forming the cable and sequentially wraps the twisted cable core with a refractory layer and an aluminum armored layer; the twisting and wrapping device comprises a conveying mechanism, a twisting mechanism, a refractory layer wrapping mechanism and an aluminum armored layer wrapping mechanism; the conveying mechanism drags the cable core, so that the cable core sequentially passes through the twisting mechanism, the refractory layer wrapping mechanism and the aluminum armored layer wrapping mechanism; the aluminum armored power cable is sequentially provided with the cable core, the refractory layer and a self-locking aluminum armored layer from inside to outside; the cable core is formed by twisting the insulated wire core and a filling rope; the refractory layer is formed by multiple groups of refractory strips wrapping the cable core; and the self-locking aluminum armored layer is formed by multiple groups of aluminum strips wrapping the cable core refractory layer. According to the produced aluminum armored power cable, the fire resistance, the corrosion resistance and the flexibility of the cable can be strengthened and the bending radius value of the cable can be reduced.

Description

technical field [0001] The invention relates to the mechanical field, in particular to an aluminum armored power cable and its production equipment and production process. Background technique [0002] At present, steel tape armored power cables below 35kV used in domestic power transmission and distribution projects are mainly used for direct burial laying. of. Its main disadvantages are: 1. Since the direct-buried cable is directly in contact with the soil or sand, when the outer sheath of the cable is damaged, the moisture in the soil will directly corrode the steel strip, and iron is a relatively active metal element that is easy to get in the water. Acid and alkali react; therefore, power transmission accidents caused by steel strip corrosion often occur, and at the same time, the service life of cables is greatly shortened due to steel strip corrosion, which brings great losses to the national economy. 2. For steel tape armored power cables produced by traditional te...

AI Technical Summary

Problems solved by technology

Its main disadvantages are: 1. Since the direct-buried cable is directly in contact with the soil or sand, when the outer sheath of the cable is damaged, the moisture in the soil will directly corrode the steel strip, and iron is a relatively active metal element that is easy to get in the water. Acid and alkali react; therefore, power transmission accidents caused by steel strip corrosion often occur, and at the same time, the service life of cables is greatly shortened due to steel strip corrosion, which brings great losses to the national economy

2. For steel tape armored power cables produced by traditional technology, the steel tape is covered and wrapped on the cable core. This structure makes the cable bending value must be relatively large, which is about 12 times the outer diameter of the cable, because when the cable bending radius When it is less than 12 times, the steel tape will be tied to the insulated core, so the steel tape armored cable has poor flexibility and is inconvenient for construction

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