Preparation method and compacting stranding device of compacting soft structure conductor

Abstract

The invention discloses a preparation method and a compacting stranding device of a compacting soft structure conductor. The preparation method and the compacting stranding device of the compacting soft structure conductor are used to prepare the compacting soft structure conductor formed by stranding at least one cable conductor and plied yarns in unidirectional mode. Nonwovens and a wrapping belt such as a metal belt, a semi-conductive belt, a fireproof belt and a waterproof belt wrap the exterior of the compacting soft structure conductor. The preparation method and the compacting stranding device of the compacting soft structure conductor solve the problems that an existing incongruous stranded conductor is not compact in structure and large in external diameter, leaves out a cabling filling step through special sector and tile structures, decreases the external diameter of a cable, and reduces the weight of the cable. Simultaneously, Due to the unidirectional stranding structure of the compacting soft structure conductor, bending performance, especially torsion resistance of the compacting soft structure conductor is greatly improved, and when the compacting soft structure conductor is twisted for 10000 times by + / - 1440 degrees at room temperature, filaments of the compacting soft structure conductor can not be broken, and change value of resistance of the compacting soft structure conductor is less than or equal to 4%.

Description

technical field [0001] The invention relates to a preparation method of a compacted soft structure conductor and a compaction stranding device thereof, in particular to a preparation method and a compaction stranding device of a compacted soft structure conductor with a tight conductor structure. Background technique [0002] The existing soft structure conductors for power transmission and distribution are based on IEC 60228-2004 and GB / T 3956-2008 standards, among which the nominal cross-section of the fifth conductor is 0.5mm 2 -630mm 2 , the nominal section of the sixth conductor is 0.5mm 2 -300mm 2 . 6mm in the actual production process 2 Conductors up to and below adopt a bundle twisting method; 10mm 2 Due to the increase in the outer diameter of the single wire and the increase in the number of single wires, the conductors above and above cannot be twisted at one time. It is necessary to twist the strands first and then twist the strands into a conductor; The tw...

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Problems solved by technology

6mm in the actual production process 2 Conductors up to and below adopt a bundle twisting method; 10mm 2 Due to the increase in the outer diameter of the single wire and the increase in the number of single wires, the conductors above and above cannot be twisted at one time. It is necessary to twist the strands first and then twist the strands into a conductor; The twisting direction of adjacent layers is different, and the twisting direction of the strands is different from that of the conductor. Because the twisting direction of the adjacent layers is opposite to that of the opposite direction conductor, there is a large gap inside, resulting in a larger overall outer diameter of the cable; The traces of the strands are exposed, and the conductor cannot be smooth and flat; at the same time, due to the existence of gaps, the path through which the current passes becomes longer and the resistance is relatively large, which is not conducive to the economical use of materials, such as figure 1 shown

At the same time, the conductors mostly adopt a circular structure. When producing multi-core cables, filling ropes or filling strips need to be used to fill the gaps between the insulations, which leads to an increase in the outer diameter of the cable and a relatively large weight of the cable, such as figure 2 shown

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