Flexible, armoured pipe and use of same

Details Flexible, armoured pipe and use of same Flexible, armoured pipe and use of same

F - Mech Eng,Light,Heat,Weapons

16

L

F16L 11/08 (2006.01) F16L 59/153 (2006.01)

Patent

CA 2399304

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.

L'invention concerne un tuyau souple renforcé composé d'une garniture intérieure (3) entourant une carcasse (1). Deux couches de renfort sont disposées sur la surface extérieure de la garniture intérieure (3), la couche intérieure (5, 6) étant une couche de renfort contre la pression, et la couche extérieure (7, 8) étant une couche de renfort contre la traction. Une gaine extérieure (9) est finalement appliquée autour desdites couches de renfort. Pour garantir une conduction thermique suffisamment basse au travers des parois du tuyau, une ou plusieurs couches d'isolation thermique (10) sont extrudées à l'extérieur de la garniture intérieure, ces couches pouvant par exemple être composées en fonction de l'utilisation du tuyau, d'un polymère ou d'un mélange polymère, d'une polyoléfine telle que le polypropylène, ou d'une polycétone. Le tuyau souple renforcé selon l'invention est particulièrement adapté à l'extraction, le transport ou le raffinage de pétrole et de fluides associés.

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