Flexible duct for conveying hydrocarbons comprising a...

Details Flexible duct for conveying hydrocarbons comprising a... Flexible duct for conveying hydrocarbons comprising a...

F - Mech Eng,Light,Heat,Weapons

16

L

F16L 11/16 (2006.01)

Patent

CA 2661126

A flexible duct with a frame made by winding a S-profiled hoop iron (7) into clamped turns, wherein the edges of two adjacent turns overlap each other in order to form between them a helical closed gap (20) having an essentially rectangular cross-section and at least partially filled by a helically-wound strut profile (30) separate from the hoop iron (7) and resting on at least two opposite walls of the lower surface (22b) and the upper surface (22a), wherein said strut profile (30) has, in the winding radial direction, a crush resistance substantially equal to zero and, in the winding longitudinal direction, a substantial crush resistance.

Dans cette conduite flexible à carcasse constituée par l'enroulement en spires agrafées d'un feuillard (7) profilé en S, les bords de deux spires adjacentes se chevauchant pour former entre eux un espace fermé hélicoïdal (20) de section sensiblement rectangulaire occupé au moins partiellement par un profilé d' entretoise (30) enroulé hélicoïdalement, distinct du feuillard (7) et s 'appuyant sur au moins les deux parois opposées d'intrados (22b) et d'extrados (22a), ledit profilé d' entretoise (30) présente dans la direction radiale de l'enroulement une capacité à l'écrasement sensiblement nulle et dans la direction longitudinale de l'enroulement une capacité à l'écrasement notable.

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