Submarine high-voltage cable and production method for same

Abstract

The invention belongs to the technical field of cables and particularly relates to a submarine high-voltage cable. The cable comprises a conductive unit, a metal shielding layer, a waterproof layer, an inner sheath, an armor layer, an outer sheath and an outer sheath protection layer. The conductive unit comprises a conductor, an insulation layer, an insulation shielding layer and a conductor protection layer. On any one cross section, the circular center of the conductor and the circular center of the insulation layer coincide, the diameter of the insulation layer is 1.5 times to 5 times of that of the conductor, and the minimum insulation layer thickness is 1.5mm. Filling rope layers and reinforcing elements are distributed on the outside of the inner sheath alternately and are attached to the inner sheath. The outer sheath protection layer is made of polyamides, and the insulation layer is made of silane crosslinked polyethylene or special materials. The invention further discloses a production method for the cable. The cable and the production method have the advantages of being appropriate in mechanical performance redundancy is, capable of saving resources, anti-abrasion, anti-water-seepage, anti-seawater, good in shielding performance and capable of transmission high voltages.

Description

technical field [0001] The invention belongs to the technical field of submarine cables, in particular to a submarine high-voltage cable and a manufacturing method thereof. Background technique [0002] The surface of the earth is divided into vast waters connected to each other by major continents called oceans. The total area of ​​the earth is about 360 million square kilometers, accounting for about 71% of the earth's surface area, which is about 2.5 times the land area. The world's oceans are a huge treasure house. It has a large number of things and rich industrial resources necessary for human beings. The five main oceans of the earth are the Pacific Ocean, the Atlantic Ocean and the Indian Ocean, the Arctic Ocean, and the Southern Ocean, most of which are bounded by land and seabed topographic lines. [0003] With the rapid development of industry, the scale of people's exploration of the ocean is increasing day by day, and the utilization value of the ocean is al...

AI Technical Summary

Problems solved by technology

[0007] However, after repeated tests, the applicant believes that there is still room for structural improvement in the prior art high-voltage cables for submarine use, which is mainly reflected in (1) excessive redundancy of the armor layer, mainly in terms of tensile strength. The main consideration in the existing technology is the roundness of the cable. Therefore, the reinforcement used in the armor layer far exceeds the required tensile strength, resulting in a waste of resources; (2) the wear resistance and anti-seepage of the outer protective layer The performance of water and seawater resistance needs to be improved; (3) The setting method of the shielding layer and the insulating layer can be further improved to better improve the performance of the cable; (4) The material of the insulating layer needs to be further developed so that it can achieve higher resistance pressure rating or performance

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