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Cunisi alloy cable sheathing

A technology of alloy and inner sheath, which is applied in the direction of submarine cables, insulated cables, power cables with shielding layer/conductive layer, etc., and can solve the problems of fatigue characteristics decline and limitation in longitudinal welding

Pending Publication Date: 2021-03-02
NEXANS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

EP 3438 993 A1 discloses the use of CuNi alloys in which the expected decrease in longitudinal welding fatigue properties is limited by welding via spontaneous laser welding

Method used

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  • Cunisi alloy cable sheathing
  • Cunisi alloy cable sheathing
  • Cunisi alloy cable sheathing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0047] The invention will be further described by way of example embodiments.

[0048] Example Embodiment 1

[0049] Example Embodiment 1 is in figure 2 A single conductor power cable schematically shown in a) and 2b). These figures show cross-sectional views. figure 2 a) illustrates the single conductors forming the core of the cable. The cable core comprises at its center an electrical conductor (2) made of 400mm of conductive pitch (ETP) Cu 2 Made of drawn and twisted wire. Alternatively, the strands of conductors may be made of AA1370 aluminum alloy or AA6101 aluminum alloy. The conductor is impregnated by filling the spaces between the individual strands of the conductor with a commercially available water sealant (6), such as eg a silicone sealant, to provide a longitudinal water barrier.

[0050] The conductor (2) is given a first layer of semiconducting polyethylene (PE) (7) with a thickness of 1.5 mm to relieve electrical stress concentrations around the con...

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Abstract

The present invention relates to a water blocking layer / sheathing for subsea power cables made from a CuNiSi-alloy.

Description

[0001] The present invention relates to a water barrier / jacket for submarine power cables. Background technique [0002] As the world's maritime infrastructure develops, the use of submarine cables to transmit power under, over, in or across bodies of water is rapidly increasing. Such submarine power cables are elongated structures and are typically suspended between floating units located at the surface of a body of water from which electrical power is typically transmitted to equipment on the seabed. [0003] current technology [0004] Power cables typically consist of one or more electrical conductors, each electrically insulated by a dielectric / insulating material arranged radially around the conductors. Then there is the inner sheath, which protects the conductor and its insulation from water ingress, corrosion, etc. Depending on the type and intended use of the power cable, an inner sheath can be applied around each conductor and its insulation, or it can be one commo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B7/20H01B7/28H01B7/14H01B7/22H01B7/282C22C9/06C22C9/10C22C9/05C22C9/00
CPCH01B7/208H01B7/2806H01B7/14H01B7/22H01B7/282C22C9/06C22C9/10C22C9/05C22C9/00H01B7/2825Y02A30/14H01B1/026H01B9/02
Inventor 奥敦·约翰松
Owner NEXANS
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