Flexible tubular fluid-transfer conduit
AssigneeTechnip France
InventorFrançois Dupoiron
Life of this patent
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Abstract
A flexible tubular pipe having a pressure sheath, a pressure vault comprising at least one pressure-resistant armor, an intermediate sheath and at least one tensile armor layer. The inner annular space formed between the pressure sheath and the intermediate sheath comprises a layer which is used to drain the gases present in the annular space. The drainage layer is formed by a short-pitch winding of at least one long element having transverse drain holes or spaces which can drain gases between the successive turns of the winding. The transverse holes or spaces extend in a direction which is essentially transverse to the winding turns.
Claims9
A flexible pipe for the transport of fluid comprising at least, from its inside outward, a pressure sheath, a pressure vault comprised of at least one pressure-resistant armor, an intermediate sheath, at least one tensile armor ply;
- an internal annular space defined between the pressure sheath and the intermediate sheath;
- a draining layer in the annular space and that allows gases present in annular space to be drained away, the draining layer being formed by a short-pitch winding of at least one elongate element that includes drainage spaces or recesses extending transversely of the winding that allow gases to drain away between successive turns of the winding and in a direction approximately transverse to a direction of winding of the turns.
Dependencies are inferred from the claim text.