Ultra-flexible multi-strand combined carbon fiber composite core wire and manufacturing process thereof

Abstract

The invention discloses an ultra-flexible multi-strand combined carbon fiber composite core wire and a manufacturing process thereof. The wire includes a core rod and a conductive metal layer wrappedaround the core rod. The core rod includes a group of carbon fiber composite cores with circular cross section. The axes of the carbon fiber composite cores in the carbon fiber composite core group are arranged in parallel. A connection line of the axes of the carbon fiber composite cores located at the periphery of the carbon fiber composite core group constitutes a regular polygon structure. Theouter layer of the carbon fiber composite cores at the periphery of the carbon fiber composite core group are also wrapped in an aluminum foil or tin foil coating layer. A viscous glass fiber reinforcing layer is arranged on the inner layer of the aluminum foil or tin foil coating layer. The conductive metal layer includes an aluminum extrusion layer and an aluminum strand layer which are wrappedaround the coating layer in order. The ultra-flexible multi-strand combined carbon fiber composite core wire and the manufacturing process thereof overcome the defects of the prior art. The core rodis improved in bending and winding properties, enhanced in strength, improved in humidity and heat, ozone and ultraviolet aging resistance, and remarkably improved in stability and reliability of use.Moreover, the core rod can be prefabricated as a separate product so as to simplify the production process.

Description

technical field [0001] The invention belongs to the technical field of overhead wires, and in particular relates to a super-flexible multi-strand combined carbon fiber composite core wire and a manufacturing process thereof. Background technique [0002] Conductor mandrel is used as the supporting core material of the wire. With the continuous advancement of material technology, it has become a well-known technical solution in the art to use organic composite materials as the mandrel core material; Multi-strand core wire stranding form, single core rod-shaped core wire is easy to bend and damage, resulting in frequent wire breakage accidents; multi-strand core wire stranding form twists and fixes multiple strands of core wire in a helical manner, even The final shape is strengthened and fixed by dipping. Compared with the single-strand form, the multi-strand mandrel has significantly improved rigidity and winding bending ability. Compared with the single-strand form, the sam...

AI Technical Summary

Problems solved by technology

[0002] Conductor mandrel is used as the supporting core material of the wire. With the continuous advancement of material technology, it has become a well-known technical solution in the art to use organic composite materials as the mandrel core material; Multi-strand core wire stranding form, single core rod-shaped core wire is easy to bend and damage, resulting in frequent wire breakage accidents; multi-strand core wire stranding form twists and fixes multiple strands of core wire in a helical manner, even The final shape is strengthened and fixed by dipping. Compared with the single-strand form, the multi-strand mandrel has significantly improved rigidity and winding bending ability. Compared with the single-strand form, the same amount of material is made The cross-section of the carbon fiber composite mandrel wire is increased, which greatly improves the transmission capacity of the wire and can significantly reduce the wire loss;

[0003] However, the existing mandrel in the form of twisted multi-strand core wires is prone to joint integrity damage after one core wire is bent, damaged or broken, and the bending fatigue damage of the remaining core wires during bending and winding will increase significantly. Highly prone to breakage, loss of stranded shape integrity

Therefore, the use stability and reliability of the existing helically stranded mandrel structure are not high. In addition, due to the different stranding forms of each single path, it cannot be guaranteed to break at the same time when the force is applied, and the overall strength is small.

However, in some special occasions, it still cannot meet the needs of use well.

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