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US 2026/0301993 A1Published application
Radial water barrier for a subsea cable
AssigneeNexans
InventorsAudun Johanson, Øyvind Iversen, Sigurd Schawlann
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Abstract
A radial water barrier for a subsea cable is proposed, wherein the water barrier comprises a longitudinally welded lead-free metal sheet formed into a tube having an outer surface, wherein at least a part of the outer surface has a radially undulating structure with a pitch of at least 2 mm in a longitudinal direction, and wherein the radially undulating structure has an amplitude in form of a radial depth of the geometric pattern in the range of 0.015 mm to 5 mm.
Claims13
A radial water barrier for a power transmission cable,
- wherein the water barrier comprises a longitudinally welded lead-free metal sheet formed into a tube having an outer surface,
- wherein at least a part of the outer surface has a radially undulating structure with a pitch of at least 2 mm in a longitudinal direction, and
- wherein the radially undulating structure has an amplitude in form of a radial depth of the radially undulating structure in the range of 0.015 to 5 mm.
Method for manufacturing a subsea cable, comprising the steps of:
- forming at least one conductor,
- applying at least one insulation and/or semiconducting layer, and
- forming a radial water barrier around the at least one insulation and/or semiconducting layer by longitudinally welding a lead-free metal sheet formed into a tube having an outer surface,
- wherein at least a part of the outer surface has a radially undulating structure with a longitudinal pitch in a longitudinal direction, and
- wherein the radially undulating structure has an amplitude in form of a radial depth of the radially undulating structure in the range of 0.015 mm to 5 mm.
2 more elements
Dependencies are inferred from the claim text.