F - Mech Eng,Light,Heat,Weapons – 16 – L
Patent
F - Mech Eng,Light,Heat,Weapons
16
L
F16L 11/08 (2006.01) F16L 59/153 (2006.01)
Patent
CA 2398315
An armoured flexible pipe consists of an inner liner (3), on the inside of which a carcass (1) is provided, while the outer side of the inner liner is surrounded by a layer of pressure armour and a layer of tensile armour, which in turn are surrounded by one or more layers of thermally insulating bands which are shielded from the surroundings by an outer sheath. With the object of ensuring a sufficiently low transport of heat through the walls of the pipe, on the outside of the pressure and tensile armour layers (5, 6, 7, 8) thermally insulating bands are provided, which bands are made of a polymer or a polymeric composition, such as a polymer containing at least 50 % polypropylene. The armoured flexible pipe according to the invention is especially advantageous 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), une carcasse (1) étant disposée sur la surface intérieure de la garniture, et la surface extérieure de la garniture intérieure étant entourée d'une couche de renfort contre la pression et d'une couche de renfort contre la traction. Lesdites couches de renfort sont à leur tour entourées d'une ou plusieurs couches de bandes d'isolation thermique protégées contre les environs par une gaine extérieure. Pour garantir une conduction thermique suffisamment basse au travers des parois du tuyau, des bandes d'isolation thermique (5, 6, 7, 8) sont disposées à l'extérieur des couches de renfort contre la pression et la traction, ces bandes étant composées d'un polymère ou d'une composition polymère, et ledit polymère contenant au moins 50 % de polypropylène. Le tuyau souple renforcé selon l'invention est particulièrement adapté à l'extraction, le transport ou le raffinage de pétrole et de fluides associés.
Glejbol Kristian
Wedel-Heinen Jakob
Bereskin & Parr Llp/s.e.n.c.r.l.,s.r.l.
Nkt Flexibles I/s
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