Novel non-metal layer-twisting mining optical cable

Abstract

The invention relates to a novel non-metal layer-twisting mining optical cable which includes a cable core and a sheath assembly which is installed outside the cable core in a sleeved manner. The cable core includes a reinforcing core and at least one optical-fiber bushing which is twisted around the reinforcing core. A plurality of optical fibers are installed in each optical-fiber bushing and the optical-fiber array methods in the optical-fiber bushings are different. The sheath assembly includes an external sheath, a sheath, a reinforcing layer and an internal sheath. The internal sheath, the reinforcing layer, the sheath and the external sheath wrap the cable core sequentially from inside to outside. The reinforcing layer includes a plurality of stiffeners which surround the internal sheath uniformly. A cable opening rope is arranged in the external sheath. A cable paste fills a part between the cable core and the internal sheath. The stiffeners and the reinforcing cable are made of an FRP material so that the optical cable is high in tensile strength, capable of meeting demands of optical fibers with a large number of cores and preventing thunder strikes and blast of combustible gases caused by generation of static electricity, and simple to lay.

Description

technical field [0001] The invention relates to a layer-stranded optical cable, in particular to a novel non-metallic layer-stranded optical cable for mines, which belongs to the technical field of optical communication transmission. Background technique [0002] With the rapid development of the communication industry, optical cables are widely used in the communication industry, among which layer twisted optical cables are the most widely used optical cables. Because the existing layer-stranded optical cables need to bear large tension, side pressure and other external forces during the laying process, it is necessary to add a central strengthening member in the center of the optical cable, and the strengthening member is usually made of steel, which increases the length of the optical cable. The weight increases the difficulty of laying. [0003] At present, metal phosphating steel wire is usually used as the reinforcement core of optical cables. Although the metal reinf...

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Problems solved by technology

[0003] At present, metal phosphating steel wire is usually used as the reinforcement core of optical cables. Although the metal reinforcement core has strong tensile properties, in special occasions such as mines where lightning occurs frequently, discharge will occur between the metal reinforcement core and the metal of the steel-plastic composite layer, making the optical cable If it is struck by lightning, it will damage the optical cable and interrupt the communication, and the static electricity generated can ignite and explode combustible gas, which may easily cause safety hazards

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