Submarine high-pressure cable good in shielding performance

Abstract

The invention belongs to the technical field of cables and particularly relates to a submarine high-pressure cable. The submarine high-pressure cable is composed of a conductive unit, a metal shielding layer, a water retention layer, an inner protecting bush, an armor layer, an outer protecting bush and an outer protecting bush protection layer; the conductive unit is composed of a conductor, an insulating layer, an insulation shielding layer and a conductor protecting layer, on any cross section, the circle center of the conductor coincides with the circle center of the insulating layer, the diameter of the insulating layer is 1.5-5 times that of the conductor, and the minimum value of the insulating layer thickness is 1.5 mm; filling rope groups and reinforcing piece groups are distributed outside the inner protecting bush in an alternate mode, and both the filling rope groups and the reinforcing piece groups are tightly attached to the inner protecting bush; the outer protecting bush protection layer is made of polyamide; the insulating layer is made of organosilane crosslinked polyethylene or a special material. The invention further discloses a manufacturing method of the submarine high-pressure cable. The submarine high-pressure cable and the preparation method thereof have the advantages that mechanical property redundancy is more proper, more resources are saved, wear resistance is better, water seepage performance is better, seawater resistance is better, shielding performance is better, and high voltage can be transmitted better.

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 also...

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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