Large-section seabed DC cable specially-shaped conductor

A DC cable with a large cross-section technology, which is applied in the direction of submarine cables, conductors, power cables, etc., to reduce the difficulty of processing and production, improve water-blocking performance, and meet the requirements of water-blocking performance

Inactive Publication Date: 2016-07-27
HENGTONG SUBMARINE POWER CABLE CO LTD
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  • Summary
  • Abstract
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  • Application Information

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Problems solved by technology

Domestic 220kV photoelectric composite submarine cables have been industrialized, but only a few 500kV submarine high-

Method used

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  • Large-section seabed DC cable specially-shaped conductor

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Embodiment Construction

[0017] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, so as to define the protection scope of the present invention more clearly.

[0018] see figure 1 , the embodiment of the present invention includes:

[0019] A special-shaped conductor of a large-section submarine direct-current cable. The large-section submarine direct-current cable special-shaped conductor is formed by stranding the center line 1 of the conductor and several trapezoidal single wires by using a 127-panel frame twisting machine at one time. The outer diameter of the entire conductor is 63mm. Reduce the difficulty of processing technology and production.

[0020] The central line of the conductor is a solid copper rod, and the diameter of the solid copper rod is 6 mm. The conductor can be twisted and for...

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Abstract

The invention discloses a large-section seabed DC cable specially-shaped conductor. The large-section seabed DC cable specially-shaped conductor is formed by twisting a conductor central line and a plurality of trapezoid single lines by one time, wherein the conductor central line is a solid copper rod, the plurality of trapezoid single lines are divided to six layers, and the six layers are sequentially a first layer of trapezoid single line, a second layer of trapezoid single line, a third layer of trapezoid single line, a fourth layer of trapezoid single line, a fifth layer of trapezoid single line and a six layer of trapezoid single line from inside to outside. Through the above mode, the large-section seabed DC cable specially-shaped conductor is compact in structure, the filling coefficient can be increased, and the production efficiency is improved; moreover, the trapezoid single lines are difficult to turn over during the twisting process; and meanwhile, the production process and the production difficulty are reduced, the cable material is saved, the water resistance performance is improved, and the water resistance performance requirement of a seabed cable is met.

Description

technical field [0001] The invention relates to the field of power cables, in particular to a special-shaped conductor of a large-section submarine DC cable. Background technique [0002] With the island development strategy and the rapid development of offshore renewable energy power generation, especially the rapid expansion of offshore wind power generation, the demand for submarine high-voltage power cables is increasing. Domestic 220kV photoelectric composite submarine cables have been industrialized, but only a few 500kV submarine high-voltage cables have passed the test experiment, and most manufacturers are still in the research and development stage. GB / T3956-2008 only specifies the nominal cross-sectional area of ​​0.5mm 2 to 2500mm 2 , for 3000mm 2 There are no specific requirements for cross-sectional conductors. Due to the limitation of the number of coils of the frame-type stranding machine and the diameter of the single wire, the cross-section of the circu...

Claims

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Application Information

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IPC IPC(8): H01B5/10H01B9/00H01B7/14
CPCH01B5/10H01B7/14H01B9/006
Inventor 梅文杰邢洁李春梅杨洪亮
Owner HENGTONG SUBMARINE POWER CABLE CO LTD
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