A special high-voltage power cable for submarine

Abstract

The invention discloses a special high-voltage power cable for seabed. The special high-voltage power cable is used for power transmission at the seabed and comprises a power transmission conductor and a communication optical fiber, wherein the cross section of the power transmission conductor is a ring with an opening; the communication optical fiber is located in the power transmission conductor ring; the power transmission conductor and the communication optical fiber are wrapped by an insulation material to form a whole with a circular cross section; a cladding layer which is formed by wrapping an aluminium plastic composite belt is arranged on the periphery of the insulation material; a waterproof layer is arranged on the periphery of the cladding layer; an outer sheath layer is arranged on the periphery of the waterproof layer; an armor layer which is formed in a way that a plurality of tinning aluminium wires wrap the cladding layer along the oblique lines is arranged between the waterproof layer and the cladding layer; the tinning aluminium wires which form the armor layer comprise aluminium core bodies which are located in the center and tin layers which cover the aluminium core bodies; a tin metal layer is arranged between the cladding layer and the armor layer. According to the special high-voltage power cable for seabed, the comprehensive transmission of electric power and communication signals is realized, the structure is simple, the resistance to corrosion is strong, and the carrying capacity is large.

Description

technical field [0001] The invention relates to the technical field of power cables, in particular to a submarine special high-voltage power cable. Background technique [0002] With the rapid development of the economy, submarine cables have been widely used, and the requirements for submarine cables are also getting higher and higher. The submarine environment is highly corrosive, and the cable is generally equipped with a shielding layer for anti-interference requirements. An induced potential will be generated on the shielding layer, resulting in serious eddy current and hysteresis loss, which will aggravate the corrosion hazard and shorten the cable life. service life. Due to the difficulty in laying submarine cables, the frequent replacement of submarine cables caused by the short service life will cause huge economic losses. At the same time, due to the high cost of laying submarine cables, submarine cables are usually required to have a large ampacity, and due to t...

AI Technical Summary

Problems solved by technology

Due to the difficulty in laying submarine cables, the frequent replacement of submarine cables caused by the short service life will cause huge economic losses

At the same time, due to the high cost of laying submarine cables, submarine cables are usually required to have a large ampacity, and due to the current skin effect, the increase in cable ampacity requires an increase in the diameter of the conductive cable core, which will greatly increase the weight and cost of the cable, and increase laying difficulty

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