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US 7,604,435 B2Granted
Umbilical without lay up angle
AssigneeNexans
InventorsEinar Mjelstad, Knut Ivar Ekeberg
Life of this patent
Estimating the term…
Abstract
Umbilical device, where the device has a longitudinal axis (x), and includes at least one elongated electrical cable or tube element; and an elongated load bearing component along the longitudinal axis (x) and having an external surface including at least one groove disposed along the longitudinal axis (x) and parallel thereof. The component includes a central core encompassed by a plastic or elastic layer, which is provided with the at least one groove, where the groove is designed for holding the cable or tube element within it, while allowing the cable or tube element to move substantially radially in the groove when the umbilical is bent and that the layer is made from several plastic or elastic elements.
Claims10
An umbilical device, wherein said device has a longitudinal axis (x), and comprises:
- at least two elongated electrical cable or tube elements;
- and
- an elongated load bearing component along said longitudinal axis (x) and having an external surface including at least two grooves disposed along said longitudinal axis (x) and parallel thereof, said component including a central core made from at least one electrical power cable encompassed by a plastic or elastic layer, which is provided with said at least two grooves, wherein said grooves are designed for holding said cable or tube elements within them, while allowing said cable or tube elements to move substantially radially in said grooves when said umbilical is bent and that said layer is made from several radial plastic or elastic elements each element being laid to the surface of said central core where each said element is provided within at least one of said grooves and has a circumferential width being a fraction of the total circumferential width of said umbilical device, each element having substantially the same cross- sectional shape and dimensions as the other elements, and wherein said groove is adapted in size to the cable or tube elements so that the mass and inertia forces of said cable or tube elements are continuously transferred to the layer along the length of the cable or tube element.
An umbilical device, wherein said device has a longitudinal axis (x), and comprises:
- at least two elongated electrical cable or tube elements;
- and
- an elongated load bearing component along said longitudinal axis (x) and having an external surface including at least one groove disposed along said longitudinal axis (x) and parallel thereof, said component including a central core is made from at least one electrical power cable encompassed by a plastic or elastic layer, which is provided with said at least two grooves, wherein said grooves are designed for holding said cable or tube element within them, while allowing said cable or tube elements to move substantially radially in said grooves when said umbilical is bent and that said layer is made from several radial plastic or elastic elements each element being laid to the surface of said central core where each said element is provided within at least one of said grooves and has a circumferential width being a fraction of the total circumferential width of said umbilical device, each element having substantially the same cross-sectional shape and dimensions as the other elements, and wherein said grooves have an oval cross section so that the cable or tube elements are free to move sideways in the grooves towards and away from said longitudinal axis (x) of the umbilical device when the umbilical device is moved or bent in various directions.
An umbilical device, wherein said device has a longitudinal axis (x), and comprises:
- at least two elongated electrical cable or tube elements;
- and
- an elongated load bearing component along said longitudinal axis (x) and having an external surface including at least two grooves disposed along said longitudinal axis (x) and parallel thereof said component including a central core made from at least one electrical power cable encompassed by a plastic or elastic layer, which is provided with said at least two grooves, wherein said grooves are designed for holding said cable or tube elements within them, while allowing said cable or tube element to move substantially radially in said grooves when said umbilical is bent and that said layer is made from several radial plastic or elastic elements each element being laid to the surface of said central core where each said element is provided within at least one of said grooves and has a circumferential width being a fraction of the total circumferential width of said umbilical device, each element having substantially the same cross-sectional shape and dimensions as the other elements, and wherein said grooves are shaped in a way that causes the cable or tube elements to displace towards said longitudinal axis (x) of the umbilical if located on the outside of the umbilical bend and away from said longitudinal axis (x) if located on the inside of the umbilical bend.
An umbilical device, wherein said device has a longitudinal axis (x), and comprises:
- at least two elongated electrical cable or tube elements;
- and
- an elongated load bearing component along said longitudinal axis (x) and having an external surface including at least two grooves disposed along said longitudinal axis (x) and parallel thereof, said component including a central core made from at least one electrical power cable encompassed by a plastic or elastic layer, which is provided with said at least two grooves, wherein said grooves are designed for holding said cable or tube elements within them, while allowing said cable or tube element to move substantially radially in said grooves when said umbilical is bent and that said layer is made from several radial plastic or elastic elements each element being laid to the surface of said central core where each said element is provided within at least one of said grooves and has a circumferential width being a fraction of the total circumferential width of said umbilical device, each element having substantially the same cross-sectional shape and dimensions as the other elements, and wherein said grooves are designed for holding both said cable and said tube elements within them.
Dependencies are inferred from the claim text.