Submarine power cable with longitudinal tape
AssigneeNKT HV Cables AB
InventorSonny Långström
Life of this patent
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Abstract
A submarine power cable, including: a conductor, an insulation system arranged around the conductor, the insulation system including an inner semiconducting layer, an insulation layer arranged around the inner semiconducting layer, and an outer semiconducting layer arranged around the insulation layer, a metallic water blocking layer arranged around the insulation system, the metallic water blocking layer having a longitudinal weld seam, and a metallic tape arranged radially outside the metallic water blocking layer, wherein the metallic tape extends axially along and is bonded to the weld seam.
Claims19
A submarine power cable, comprising:
- a conductor,
- an insulation system arranged around the conductor, the insulation system ng an inner semiconducting layer, an insulation layer arranged around the inner semiconducting layer, and an outer semiconducting layer arranged around the insulation layer,
- a metallic water blocking layer arranged around the insulation system, the metallic water blocking layer having a longitudinal weld seam, and a metallic tape arranged radially outside the metallic water blocking layer, wherein the metallic tape extends axially along and is bonded to the weld seam.
A method of manufacturing a submarine power cable having a conductor and an insulation system arranged around the conductor, the insulation system having an inner semiconducting layer, an insulation layer arranged around the inner semiconducting layer, and an outer semiconducting layer arranged around the insulation layer, the method comprising the
- a) wrapping a metallic sheath around the insulation system,
- b) welding opposite edges;
- of the metallic sheath longitudinally to form the metallic water blocking layer with the weld seam,
- c) laying the metallic tape over and along the weld seam, and
- d) heating the metallic tape to bond the metallic tape with the weld seam.
Dependencies are inferred from the claim text.