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A high-voltage DC optical fiber power composite submarine cable

A high-voltage direct current, optical fiber technology, applied in the field of power cables

Active Publication Date: 2022-05-20
FEIZHOU GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In view of the defects existing in the above-mentioned prior art, the purpose of the present invention is to provide a high-voltage DC optical fiber power composite submarine cable, which solves the problem that the submarine cable meets the requirements of mechanical strength and water resistance, and at the same time has better softness and excellent resistance to torsion and bending. The problem of the fatigue properties of

Method used

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  • A high-voltage DC optical fiber power composite submarine cable
  • A high-voltage DC optical fiber power composite submarine cable
  • A high-voltage DC optical fiber power composite submarine cable

Examples

Experimental program
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Effect test

Embodiment 1

[0042] A high-voltage direct current optical fiber power composite submarine cable, the composite cable is an extension body extending along the central axis A with a cross section, the cross section is circular, rectangular or square; it includes conductor core units arranged in sequence from the inside to the outside 10. Insulation filler unit 20 , compound extruded unit 30 , and armored sheath unit 40 .

[0043]The conductor core unit 10 includes a circular compressed conductor 11 with a built-in water blocking tape 12 , and a conductor shielding layer 15 is provided outside the circular compressed conductor 11 . The circular compacted conductor 11 is formed by compressing a central circular conductor 13 and a plurality of tile-shaped conductors 14 layer by layer with wave-type twisted water-blocking tapes 12, the conductor filling factor is greater than or equal to 95%, and the effective cross-section of the conductor after compacting is greater than 90mm 2 . The water-b...

Embodiment 2

[0062] The composite extruded unit is improved by changing the extension of the fiber unit 60 along the central axis A to helical winding, and the reinforcing fiber bundle 70 is arranged radially outside of the fiber unit 60 . Other structures are with embodiment 1.

[0063] A high-voltage DC optical fiber power composite submarine cable, the conductor core unit 10 and the insulating filler unit 20 constitute a transmission cable core with a circular cross section, and a composite extruded unit 30 is arranged between the cable core and the armored sheath unit, and the glue is exchanged The crest composite part 32.2 of the joint layer 32 and the trough filling part 33.1 of the rubberized elastic layer 33 are alternately arranged around the transmission cable core along the central axis A with a certain pitch h, and the pitch h satisfies 100mm≤h≤500mm. The rubberized elastic layer 33 includes a trough filling part 33.1 filling the space between the crest compounding parts 32.2 a...

Embodiment 3

[0067] The composite extrusion unit is improved, and a structure that strengthens interface bonding is added, and other structures are the same as those in Embodiment 1 or 2.

[0068] A high-voltage DC optical fiber power composite submarine cable, the conductor core unit 10 and the insulating filler unit 20 constitute a transmission cable core with a circular cross-section, and a composite extrusion unit 30 is arranged between the cable core and the armored sheath unit, and also includes a device Joint strengthening unit at interface joints of different properties. The joint strengthening unit includes a water-blocking adhesive layer 50 and a bonding reinforcement structure 90, and the water-blocking adhesive layer 50 is arranged between the insulating filler unit 20 and the composite extrusion unit 30, or the armored sheath unit 40 and the composite extruded unit 30, or between the braided armor layer 41 and the adjacent sheath layer 42 and the rubberized elastic layer 33, t...

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Abstract

A high-voltage direct-current optical fiber power composite submarine cable, an extruded composite unit (30) is arranged between an insulating filler unit (20) and an armored sheath unit (40), and the composite extruded unit (30) includes an inner and The longitudinally-wrapped aluminum-plastic layer (31), rubber-coated cross-linked layer (32) and rubber-coated elastic layer (33) arranged in sequence on the outside, the rubber-coated cross-linked layer (32) and the rubber-coated elastic layer (33) pass through the wave-shaped interface Composite cladding, the elastic modulus of the material of the rubberized cross-linked layer (32) is greater than the material elastic modulus of the rubberized elastic layer (33); the optical fiber unit (60) is embedded parallel to the central axis A or helically with a certain pitch In the encapsulating cross-linked layer (32), the reinforcing fiber bundles (70) are parallel to the central axis A and optionally embedded in the encapsulating cross-linked layer (32) and / or the encapsulating elastic layer (33). The longitudinal water sealing performance and flexibility of the high-voltage direct current optical fiber electric composite submarine cable are significantly improved.

Description

technical field [0001] The invention relates to the technical field of power cables, in particular to a high-voltage direct current optical fiber power composite submarine cable. Background technique [0002] Submarine high-voltage power cables are limited by the length of their manufacture, with high quality risks and high watertight performance requirements, making production difficult. Submarine cables are inevitably subject to external mechanical erosion and seawater erosion during use. Therefore, submarine cables must have good mechanical strength and high water resistance. [0003] The existing submarine cables with conventional structures cannot meet the needs of flexible DC power transmission in offshore tidal energy, wave energy power generation devices and other marine environments. There are mainly the following problems in the operation of conventional submarine cables in dynamic marine environment conditions. (1) Under the environment of long-term tide and wav...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B7/14H01B7/04H01B7/18H01B7/282H01B9/00
CPCH01B7/14H01B7/045H01B7/183H01B7/1875H01B7/18H01B7/282H01B9/005Y02E10/30
Inventor 丁嘉敏丁忠海
Owner FEIZHOU GRP
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