Torsion resistant photoelectric composite medium-voltage drum cable

Abstract

The invention discloses a torsion resistant photoelectric composite medium-voltage drum cable. The torsion resistant photoelectric composite medium-voltage drum cable comprises a plurality of power line cores and a plurality of ground line cores which are twisted together to form a cable core, as well as at least one optical unit, a special chloroprene rubber inner sheath wrapping the cable core, a reinforcing layer which is woven at the exterior of the special chloroprene rubber inner sheath and is embedded in the special chloroprene rubber inner sheath, and a special chloroprene rubber outer sheath wrapping the reinforcing layer; in power line core conductors and ground line core conductors, the stranding directions of two adjacent layers are opposite, and the stranding direction of each layer is opposite to the stranding direction of strand lines in a corresponding layer; the reinforcing layer is a terylene wire-woven reinforcing layer; insulating layers in the power line cores are ethylene propylene rubber layers; loose bushings are made of polybutylene terephthalate plastics; water-resisting yarns are made of water-resisting aramid fibers; thixotropic composites are made of factice; and nonmetallic reinforcing members are made of aramid fibers. With the torsion resistant photoelectric composite medium-voltage drum cable of the invention adopted, the special chloroprene rubber sheaths are adopted as the inner sheath and the outer sheath of the cable, and therefore, the torsion resistant photoelectric composite medium-voltage drum cable has excellent low temperature resistance, wear resistance, oil resistance and other properties, and the service life of the cable can be prolonged.

Description

technical field [0001] The invention relates to a photoelectric composite medium-voltage reel cable, and also relates to the torsion-resistant photoelectric composite medium-voltage reel cable. Background technique [0002] The existing photoelectric composite medium-voltage reel cable can be applied to applications with high mechanical stress, such as port machinery, such as shore container cranes, rail-mounted container gantry cranes, ship unloaders, stackers and reclaimers. and other heavy handling equipment. Photoelectric composite medium-voltage reel cable products are usually laid outdoors and are often used in harsh environmental conditions, such as: long-term sun and rain, day and night cold, frost and snow, corrosion by ultraviolet rays, ozone and other natural conditions, and performance decline Faster, shorter lifespan. During the use of the cable, the cable must withstand tensile, torsion and bending fatigue, resulting in a rapid decline in the performance of t...

AI Technical Summary

Problems solved by technology

In the photoelectric composite medium-voltage reel cable, the outer sheath of the optical unit is extruded with thermosetting rubber. Since the normal operating temperature of the optical fiber is -40°C-70°C, the temperature of the vulcanized tube when the rubber is extruded is 150°C- 200℃, the time is 10-20min, the temperature through the vulcanized tube is high, the time is long, it is difficult to guarantee the performance of the optical fiber; in addition, the conductive core and the optical unit in the cable are relatively difficult to control, which will also affect Service life of photoelectric composite medium voltage reel cable

In addition, the performance of the sheath material of the photoelectric composite medium-voltage reel cable is not too high, resulting in relatively poor tensile strength, low temperature resistance, and aging resistance of the cable.

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