초록 ▼

A tubular flexible pipe which from the inside outward includes an inner sealing sheath of polymer, a cylindrical pressure vault comprised of a helical wire winding with gaps between the windings, perhaps a wound tensile armoring layer and a scaling outer sheath. The vault includes an elongated maski

A tubular flexible pipe which from the inside outward includes an inner sealing sheath of polymer, a cylindrical pressure vault comprised of a helical wire winding with gaps between the windings, perhaps a wound tensile armoring layer and a scaling outer sheath. The vault includes an elongated masking element, at least partially masking the gaps between the windings of the wire and being at the inner sheath, The masking element is a wire helically coiled in a recess at the inner face of the vault or is an axial extension of the vault wire.

대표청구항 ▼

1. A flexible tubular pipe with an inside and an outside, the pipe comprising from the inside outward:an internal sealing sheath comprised of a polymer material; a cylindrical pressure vault outside the internal sheath, the pressure vault having an external face and having an internal face placed ov

1. A flexible tubular pipe with an inside and an outside, the pipe comprising from the inside outward:an internal sealing sheath comprised of a polymer material; a cylindrical pressure vault outside the internal sheath, the pressure vault having an external face and having an internal face placed over the internal sheath; the vault comprising interlocked profiled metal wire wound in a helix with turns at a relatively short pitch, with the turns interlocked and with a gap between adjacent turns of the helix; the vault wire including a recess into the internal face and the recess extending away from the gap along the length of the wire; an elongate overlay element at the internal face of the vault extending in the recess along the length of the wire and not interlocking the turns of the helix; facing the internal sheath, the overlay element extending past and at least partially masking the gap between the adjacent turns of the helix; the recess and the overlay element being respectively so shaped that with the vault over the internal sheath, the overlay element in the recess prevents passage of the sheath between the overlay element and the wire through the recess and into the gap; at least one ply of tensile armor layers wound with a relatively long pitch around the external face of the vault; an external protective sealing sheath comprised of a polymer outside the at least one ply of tensile armor layers.