Compact tight-press stranded conductor, tight-press stranding device and method

By forming a tightly compressed stranded conductor through the twisting of single wires in a tile shape, the problem of uneven insulation and cable breakdown caused by gaps between single wires is solved, achieving a high compression coefficient and low heat loss, extending cable life and improving production efficiency.

CN122201885APending Publication Date: 2026-06-12SHANGHAI SHENGHUA ELECTRIC CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHANGHAI SHENGHUA ELECTRIC CO LTD
Filing Date
2026-04-30
Publication Date
2026-06-12

AI Technical Summary

⚠Technical Problem

Existing compacted stranded conductors have gaps or slits between individual wires, resulting in uneven insulation thickness, concentrated electric field, increased risk of cable breakdown, and low compaction coefficient, which affects cable life.

⚗Method used

Tightly compressed stranded conductors are formed by twisting and pressing the monofilaments in a tile-shaped cross-section. The monofilaments have no grooves on their outer surface, the gap between the monofilaments is less than 0.05 mm, and the compression coefficient is not less than 97%. Twisting is performed using a tight-compression stranding device, which includes a mold, clamps, supports, adjusting guide rails, and a wire feeding reel. The stranded conductor is formed through irregularly shaped holes.

🎯Benefits of technology

It achieves a smooth, seamless conductor surface, uniform insulation thickness, reduces the risk of cable breakdown, reduces contact resistance and eddy current loss, extends cable life, saves insulation and sheathing materials, and improves production efficiency.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present application relates to a kind of compact tight pressing stranded conductor, tight pressing device and method.The stranded conductor is specifically formed by the tight pressing of a plurality of tile-shaped filaments.The cross section of the tile-shaped filaments is tile-shaped, the outer surface of the conductor is free of grooves, the gap between the filaments is less than 0.05 mm, and the tight pressing coefficient is not less than 97%.Compared with the prior art, the present application can significantly improve the operational stability and service life of the cable by first drawing the filaments and then stranding the conductor, without grooves between the filaments on the outer surface of the conductor, smooth surface and basically no gap.
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