Low-smoke halogen-free flame-retardant digital communication cable for ship

Abstract

The invention discloses a ship used digital communication cable characterized by low-smoke, halogen-free, and flame-retardant, and belongs to the technical field of cables. The digital communication cable comprises four pairs of twisted pair wires which are separated by a cross; the twisted pair wires are correspondingly arranged inside four quadrants separated by the cross; a polyester belt is longitudinally packaged on the twisted pair wires and the cross; an aluminum foil inner shielding layer longitudinally packages the polyester belt; a cross flow conductor, which is in contact with the aluminum foil inner shielding layer, is arranged on the inner side of the aluminum foil inner shielding layer, an inner sheath is arranged outside the aluminum foil inner shielding layer; an outer shielding layer, which is formed by weaving copper wires, is arranged outside the inner sheath; and an outer sheath, which is made from a non-halogen material, is arranged outside the outer shielding layer. The cable has double shielding effects, so that the shielding effect thereof is better; the cross flow conductor can be earthed, thereby preventing electromagnetic signals generated inside from interfering other electronic equipment; and the cross is arranged for reducing mutual signal interference between the twisted pair wires. The digital communication cable has the advantages of good anti-electromagnetism interference performance, and little distortion during transferring the signals, and can be applied to data communications for ships.

Description

technical field [0001] The invention relates to a cable, in particular to a communication cable for ships. Background technique [0002] In the prior art, there is a light-duty control and communication cable for ships. Its patent number is: ZL 03210070.1. Its structure mainly includes a shielding layer wrapping multiple groups of conductors and a sheath tube outside the shielding layer. Each group of conductors consists of a single core wire Or two core wires, each core wire has an insulating layer outside, the insulating layer is cross-linked polyolefin with a thickness of 0.3-0.4 mm, and a layer of polyester insulating film is placed outside the conductor. The cable is light in weight, which greatly reduces the weight of the ship, relatively increases the speed, and reduces the cost of speed increase; when the cable catches fire, it can prevent the flame from spreading, has no effect on the human body, and has no effect on metal and electrical equipment. corrosion. Its ...

AI Technical Summary

Problems solved by technology

Its shortcoming is: as a marine communication cable, the anti-interference ability of this cable is insufficient, and at the same time, the electromagnetic interference generated by it is easy to interfere with other electronic equipment

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