Armored cable

Abstract

The invention discloses an armored cable. The armored cable includes a sleeve. The outer wall of the sleeve is sleeved with a polyurethane sheath. The inner wall of the polyurethane sheath is provided thereon with buffering grooves in the axial direction of the inner wall. The buffering grooves increase outwards in the width along the radial direction of the polyurethane sheath. The sleeve is provided with optical fibers therein. The optical fibers assume a spiral shape and are intertwisted with an aramid fiber pipe which is arranged in the middle of the sleeve. The sleeve and the aramid fiber pipe are filled therebetween with a fiber paste. When an optical fiber is crushed by heavy objects in outdoors, such as a vehicle or fallen stones, the buffering grooves will isolate the connecting part between the polyurethane sheath and the sleeve into protrusions. And when the outer wall of the polyurethane sheath is pressurized, the protrusions deform inside the two adjacent buffering grooves. The interaction force between the pressure and the elastic force generated by the recovery of the protrusions from the deformation greatly reduces the actual pressure born by the sleeve, can prevent the optical fibers inside the sleeve from being pressurized and damaged, and increases the service life of the optical fibers in outdoors.

Description

technical field [0001] The invention relates to an optical cable, in particular to an armored optical cable. Background technique [0002] The military field optical cable is a metal-free optical cable specially designed for use in field operations and complex environments that require rapid routing or repeated retractable use. It is light in weight and easy to carry; it is resistant to tension, pressure, and high in strength-to-weight ratio; softness Good, easy to bend; oil-resistant, wear-resistant, flame-retardant; wide range of applicable temperature, etc., suitable for rapid wiring or repeated retraction of military field communication systems; radar, aviation and ship wiring; oil fields, mines, ports, TV live broadcast , emergency repair of communication lines and other special occasions. [0003] Due to the lack of metal as a supporting structure in the existing optical cables, under complex field environmental conditions, it is difficult to avoid the optical cables ...

AI Technical Summary

Problems solved by technology

[0003] Due to the lack of metal as a supporting structure in the existing optical cables, under complex field environmental conditions, it is difficult to avoid the optical cables being crushed by heavy objects during use, such as military vehicles, or the oppression of heavy objects such as falling rocks in mountains, which will cause It is seriously damaged and loses its communication function, which hinders the acquisition of real-time information; and the field environment often encounters wind and rain, and ordinary optical cables cannot guarantee its long service life

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