Two-core photovoltaic composite submarine cable with rated voltage of 220 kV

Abstract

The invention relates to a two-core photovoltaic composite submarine cable with a rated voltage of 220 kV. The cable comprises a cable core and sheaths. The cable core consists of power control wire cores, a communication wire core, and a filling rope. The power control wire cores include conductors including copper wires and aluminium wires arranged at the centers of the conductors; the copper wires are arranged among the aluminium wires; conductor shielding layers are arranged outside the conductors; insulating layers are arranged outside the shielding layers; and water-blocking tapes are arranged outside the insulating layers. The communication wire core is arranged around the power control wire cores. A buffer layer, a lead sleeve, a non-metallic sheath, an anti-corrosion layer, an armored armor layer, an armored outer protection layer, and a lead alloy sheath are arranged outside the cable core successively. The provided cable has advantages of excellent anti-water-seepage, sea water-resistant, external water pressure-resistant, voltage thermal shock-resistant, and strain bending performances, long service life, and high reliability; and the effective usage rate of the power is improved; and the area occupation rate of the sea area is reduced.

Description

technical field [0001] The invention relates to a cable, in particular to a two-core photoelectric composite submarine cable with a rated voltage of 220kV. Background technique [0002] With the strengthening of my country's offshore oil exploitation and the continuous improvement of oil extraction technology, offshore oil exploitation has achieved rapid development. Since submarine power cables are installed on the seabed with complex environments, they have long been affected by wave impact, seawater corrosion and many unknown factors. Damage largely determines the length of its service life. [0003] The Chinese invention patent whose publication date is CN104681178A and whose publication date is June 3, 2015 discloses a high-temperature-resistant cable, which includes several cable cores and a tape layer extruded outside the conductive wire core. A shielding layer, an insulating layer and a PVC rubber protective sleeve are wrapped in sequence, and a heat insulating lay...

AI Technical Summary

Problems solved by technology

Although the cable with the above structure can withstand high temperatures above 1000°C, it has good flexibility and can withstand the splash of high-temperature molten steel, which meets the actual use requirements, but it cannot meet the working environment of the seabed.

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