Manufacturing method of creeping-resisting aluminium alloy conductor interlocking armoring optical-fiber composite low-voltage cable

Abstract

The invention relates to a manufacturing method of a creeping-resisting aluminium alloy conductor interlocking armoring optical-fiber composite low-voltage cable, comprising the following steps: (1) manufacturing an aluminium alloy rod; (2) manufacturing a round single wire; (3) drawing a heterotypic single aluminium wire; (4) carrying out thermal refining to obtain a heterotypic soft aluminium single wire; (5) carrying out twisting to finish a conductive wire core; (6) extruding an insulating wire core; (7) carrying out cable laying; (8) carrying out interlocking armoring; and (9) carrying out extrusion to form a sheath. The manufacturing method has the advantages that: (1) the electric conductivity can reach 61 percent or above IACS (international annealed copper standard); (2) the filling coefficient of the conductor can be increased to 0.95; (3) S-shaped interlocking armoring is adopted, the armored cable has high flexibility and strength, the minimum bending radius is 7D, the pipe penetrating and bridging of the cable can be greatly reduced, and more than 20 percent of construction expense can be saved in common building projects; (4) the processing technique for insulation and sheathing is optimized and is easy to control, and good processing size can be obtained; (5) the design and selection of a common mould and a cable laying twisting pitch are optimized, and an optical unit can be completely ensured to be in a controllable range; and (6) aramid fiber armoring is adopted to the optical unit, and the mechanical strength of the optical unit is improved.

Description

technical field [0001] The invention relates to the technical field of manufacturing optical fiber composite low-voltage cables, in particular to a method for manufacturing a creep-resistant aluminum alloy conductor interlocking armored optical fiber composite low-voltage cable. Background technique [0002] Power optical fiber OPLC will become the preferred solution for smart grid user access. Fiber-to-the-home is an inherent requirement for the development of smart grids. However, due to the high cost of laying traditional fiber-to-the-home (FTTH) solutions at the user end, the fiberization rate of the power grid at the user end is almost zero. Optical fiber composite low-voltage cable (OPLC) is a compound manufacturing of optical fiber and cable, and completes fiber-optic home access while laying cables. The gross profit margin of the product is higher than that of ordinary optical cables. Compared with the mainstream community fiber-to-the-building (FTTB+LAN) solution b...

AI Technical Summary

Problems solved by technology

It makes up for the shortcomings of the first type of poor resistance to mechanical damage, but because the armor material uses steel strips, its density is 7.8 g / cm 3 , the overall weight of the cable increases, which not only increases the product cost, but also increases the construction cost

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