High-strength low-tension cable combined by optical fibers

Abstract

The invention discloses a high-strength low-tension cable combined by optical fibers. The cable comprises a cable core which is formed by a plurality of insulated wire cores in a stranding mode, wherein each insulated wire core is composed of conductors and an insulating layer covering the conductors in a squeezing mode. Filling zones are arranged in gaps of the cable core, and an inner protective sleeve, an armor layer and an outer protective layer cover the cable core sequentially. Each conductor is of an optical unit combination body structure, and is formed by an optical unit and a plurality of metal wires covering the optical unit in a stranding mode. The high-strength low-tension cable combined by the optical fibers has the advantages of being good in mechanical properties, high in reliability, easy to lay and the like. The cable is of a combined structure of the optical fibers and the power wire cores, and thus the construction workload is reduced, and then construction period is shortened; moreover, the optical units are protected by the loose steel sleeve, the metal single wires for the conductors, and the armor layer, so that mechanical properties of the optical units are protected better, and while power transmission is not affected, the problem that the optical units are prone to damage is solved well.

Description

technical field [0001] The invention belongs to the fields of power cables and optical communications, and in particular relates to a high-strength optical fiber composite low-voltage cable. Background technique [0002] As the State Grid and China Southern Power Grid increase the construction of smart grids, in addition to vigorously building high-voltage and ultra-high-voltage large-capacity transmission lines for the backbone network, they are pushing power fiber-to-the-home at the user end. Power fiber-to-the-home refers to the low-voltage communication connection [0003] In the network access, optical fiber composite low-voltage cables are used to lay optical fibers along with low-voltage power cables, so as to realize smart meters to households, cooperate with passive optical network technology, and carry services such as power consumption information collection, intelligent power consumption two-way interaction, and multi-network integration. At present, there are ...

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Problems solved by technology

At present, there are not many cable manufacturers in my country that can develop and produce optical fiber composite low-voltage cables, and all cable cores are composed of multiple power cables and one optical cable. Although this structure is simple, because the power core conductors are made of metal materials, and Optical cables are made of non-metallic materials, so the optical unit of the optical fiber composite low-voltage cable is easily damaged by external force during the manufacturing and use process, resulting in the failure of the normal operation of the optical fiber composite low-voltage cable, or even scrapping

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