Submarine optical cable with optical unit longitudinally-wrapped copper strip structure and preparation method thereof

Abstract

The invention discloses a submarine optical cable with an optical unit longitudinally-wrapped copper strip structure and a preparation method thereof, and the submarine optical cable comprises an optical unit, a copper strip, a sheath, an outer armored steel wire, a first PP rope, an asphalt spacing layer and a second PP rope, the surface of the optical unit is longitudinally wrapped by the copperstrip, and the sheath is arranged on the outer surface of the copper strip;the inner surface of the copper strip is partially or completely covered with an adhesive film. glue is arranged between theouter surface of the optical unit and the inner surface of the copper strip or the glue film for bonding, and the edges of the copper strip are partially overlapped for lap joint and fixation. By means of the mode, the sea optical cable of the optical unit longitudinally-wrapped copper strip structure and the preparation method thereof optimize a traditional feed type submarine optical cable structure, reduce self-weight and material cost without argon arc welding, achieve longitudinally-wrapped fixing and sealing of the copper strip on the surface of the optical unit through matching of theadhesive film and glue, ensures the strength and the sealing performance of the lap joint position, and reduces the copper strip repairing difficulty and the construction risk.

Description

technical field [0001] The invention relates to the technical field of submarine optical cables, in particular to a submarine optical cable with an optical unit longitudinally clad copper tape structure and a preparation method thereof. Background technique [0002] As the link of transoceanic communication and island communication transmission, submarine optical cable has the characteristics of large capacity, high reliability and strong anti-interference, and plays an extremely important role in international communication. Most submarine optical cables include a feeder structure. At present, cable factories use copper wire or copper tape as the main feeder conductor, thereby realizing long-distance transmission of submarine optical fiber communication, and better realizing fault warning and positioning functions. The main structure of the commonly used feeder submarine optical cable is as follows: [0003] 1. Stainless steel tube light unit + inner steel wire armor + wel...

AI Technical Summary

Problems solved by technology

[0005] In fact, the submarine optical cable has high requirements on the mechanical strength, water permeability and corrosion resistance of the submarine cable. Therefore, the outer layer of the copper tube of the traditional submarine optical cable needs to add steel wire armor again to increase the mechanical performance of the submarine cable. and corrosion resistance, repeated armoring and argon arc welding of copper tubes increase the outer diameter and weight of the optical cable

[0006] In addition, the steel wire armor on the optical unit of the traditional submarine optical cable may crush the optical unit during the manufacturing process. The armored steel wire needs to be evenly coated with water-blocking glue to ensure the water-blocking performance, and the uniformity of the coating of the water-blocking glue is also very important. It is difficult to control, and the coating of water-blocking glue will also affect the welding quality of subsequent argon arc welding of copper tubes

The complexity and diversity of the process makes the quality control process of the product more difficult and the process stability worsens. Moreover, a series of complicated technological processes such as coating water-resistant glue on the steel wire armor and argon arc welding copper tubes make the manufacturing cost of the submarine optical cable increase, while the yield is low and needs to be improved

Images