US 12,228,223 B2
Flexible pipe with radial gas passage, manufacturing method and use thereof
Didier Hanonge, Allouville-Bellefosse (FR)
Assigned to TECHNIP N-POWER, (FR)
Appl. No. 17/638,010
Filed by TECHNIP N-POWER, Courbevoie (FR)
PCT Filed Aug. 26, 2020, PCT No. PCT/EP2020/073835
§ 371(c)(1), (2) Date Feb. 24, 2022,
PCT Pub. No. WO2021/037902, PCT Pub. Date Mar. 4, 2021.
Claims priority of application No. 1909479 (FR), filed on Aug. 28, 2019.
Prior Publication US 2022/0275884 A1, Sep. 1, 2022
Int. Cl. F16L 11/08 (2006.01); F16L 11/16 (2006.01)
CPC F16L 11/083 (2013.01) [F16L 11/16 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A flexible fluid transport pipe comprising:
a tubular sheath made of polymer, the tubular sheath defining a fluid circulation passage with a central axis;
a pressure vault, arranged around and outside the tubular sheath, the pressure vault comprising a short-pitch winding of at least one interlocked shaped wire, the shaped wire comprising a plurality of interlocked turns, each turn having a profile, in section in a median axial plane, defining at least one stud and, for the at least one stud, a groove adjacent to the at least one stud, the at least one stud being capable of being interlocked in an adjacent groove of an adjacent turn of a shaped wire of the pressure vault;
at least one armor layer arranged outside the pressure vault; and
at least one additional passage for gas circulation through the pressure vault from the inside of the pressure vault to the outside of the pressure vault, defined in the at least one stud and/or in the bottom of the groove, the additional passage allowing the flow of gas between an inside of the pressure vault and an outside of the pressure vault in addition to at least one clearance between the at least one stud of a turn and the bottom of the adjacent groove of the adjacent turn, or in the absence of clearance between the at least one stud of a turn and the bottom of the adjacent groove of the adjacent turn.