Flexible armoured pipe and use of same
AssigneeNKT Flexibles I/S
InventorsKristian Glejbol, Jakob Wedel-Heinen
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AssigneeNKT Flexibles I/S
InventorsKristian Glejbol, Jakob Wedel-Heinen
Estimating the term…
An armoured flexible pipe consists of an inner liner (3), which surrounds a carcass (1, 2). On the other side of the inner liner (3) there are two armour layers, where the innermost (5, 6) is a pressure armour layer, while the outermost (7, 8) is a tensile armour layer. An outer sheath (9) is finally applied around the armour layers. With the object of ensuring a low transport of heat through the walls of the pipe, one or more thermally-insulating layers (10) are extruded on the outside of the inner liner, where, depending on the use of the pipe, the layers can consist, for example, of a polymer or polymeric mixture, polyolefin, such as a polypropylene, or a polyketon. The flexible pipe according to the invention is especially applicable for use in the extraction, transport or refining of mineral oil or related fluids.
Armoured flexible pipe comprising an inner liner (3) which surrounds a carcass (1,2), and where on the outer side of the inner liner there is a pressure armour layer and a tensile armour layer (5,6,7,8) which are shielded from the surroundings by an outer sheath (9), and further comprising a thermally-insulating layer (10) on the outside of the inner liner, characterized in that the thermally insulating layer (10) is permeable to fluids.
Armoured flexible pipe according to any of the foregoing claims, characterized in that the thermal insulation is provided with means, which permit an adequate removal of materials diffused to the interface layer between the inner liner and the thermal insulation.
Armoured flexible pipe according to any of the foregoing claims, characterized in that the thermal insulation is provided with a number of small holes.
Dependencies are inferred from the claim text.