US 11,978,575 B2Granted

Power umbilical and method

AssigneeAker Solutions AS

InventorsArild Figenschou, Mehrdad Karimpour, David Hickman, Kevin Lerch

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Abstract

Power umbilical (1) comprising a plurality of power cables (7) for electric power transmission, elongated filler elements (5), and an outer sheath (3). The elongated filler elements (5) abut against each other at abutment faces (5a), thereby forming a complete ring enclosing the power cables (7). The elongated filler elements (5) comprise cable recesses (5b) within which the power cables (7) are embedded. The power umbilical (1) further comprises one or more friction control profiles (13, 15, 116), wherein the material of the friction control profile (13, 15, 116) is softer than the material of the elongated filler elements (5). The one or more friction control profiles (13, 15) are arranged in a deformed state.

Claims19

Dependent claims

A power umbilical comprising:

a plurality of power cables for electric power transmission;
a plurality of elongated filler elements;
and
an outer sheath surrounding the plurality of power cables and the plurality of elongated filler elements;
wherein the plurality of elongated filler elements abut against each other at abutment faces, thereby forming a complete ring enclosing the plurality of power cables;
wherein the plurality of elongated filler elements comprise cable recesses within which the plurality of power cables are embedded;
one or more friction control profiles;
wherein the material of the one or more friction control profiles is softer than the material of the plurality of elongated filler elements;
wherein the one or more friction control profiles are arranged in a compressed deformed state;
and
wherein the plurality of power cables are embedded within the cable recesses with a distance from the cable recesses, wherein the one or more friction control profiles extend along the elongated filler elements, and wherein the one or more friction control profiles arranged in the compressed deformed state are between the elongated filler elements and the plurality of power cables.

8 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/740,906Filed 10 May 2022
Priority: NO 2021061218 May 2021
Published: US 2022/0375650 A124 Nov 2022
Granted: 7 May 2024
Term ends: Not estimatedThe source records don’t support an estimate.

Classification9 codes

H01B 7/285
Preventing penetration of fluid , e.g. water or humidity, into conductor or cable: by completely or partially filling interstices in the cable
H01B 7/045
Flexible cables, conductors, or cords, e.g. trailing cables: attached to marine objects, e.g. buoys, diving equipment, aquatic probes, marine towline
H01B 7/046
Flexible cables, conductors, or cords, e.g. trailing cables: attached to objects sunk in bore holes, e.g. well drilling means, well pumps
H01B 7/14
Insulated conductors or cables characterised by their form: submarine cables