Flat textile strip forming one layer of a flexible duct that is used for hydrocarbon transport and the duct thus formed
AssigneeTechnip France
InventorsJean-Michel Gerez, Christophe Dieumegard
Life of this patent
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Abstract
The invention relates to a flat textile strip which is made from, for example, a reinforced thermoplastic material. The inventive strip is wound around a tube in order to form one layer of a duct through which a pressurized fluid flows. The invention is characterized in that said strip (10) comprises a central piece (11) having a more or less rectangular section and two longitudinal edges (12) which are thinner than the central piece.
Claims12
A flat textile tape, intended to produce, by helical winding, one layer of a flexible pipe for transporting hydrocarbons, serving to convey, especially under water, a pressurized fluid, the pipe consisting of unbonded layers, these being partly metallic and/or made of composite material and partly polymeric,
- characterized in that the tape (10) is formed from a central section (11) of approximately rectangular cross section and from two longitudinal edges (12) that are thinner than the central section.
The tape as claimed in either of the preceding claims, characterized in that the width of the edges (12) is between 5% and 15% of the width of the central section (11).
The tape as claimed in any one of the preceding claims, characterized in that the density of the tape is equal to or greater than 39%.
The tape as claimed in any one of the preceding claims, characterized in that it is formed from filament rovings held together by binding means and a thermoplastic bonding material.
A pipe for transporting hydrocarbons, used for conveying, especially under water, a pressurized fluid, the pipe consisting of unbonded layers, these being partly metallic and/or made of composites and partly polymeric, the pipe comprising at least one layer formed by a helical winding of a flat textile tape (10), characterized in that the tape (10) is formed from a central section (11) having an approximately rectangular cross section and from two longitudinal edges (12) that are thinner than the central section, the tape (10) being wound with at least partial overlapping of the lateral edges (12).
Dependencies are inferred from the claim text.