Heated windable rigid duct for transporting fluids, particularly hydrocarbons
AssigneeTechnip France
InventorsSylvain Denniel, Neil Shaw Malone
Life of this patent
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Abstract
Rigid wound or reelable pipe (1) for transporting hydrocarbons having a single-walled or double-walled envelope comprising two coaxial pipes, internal (2) and external (3), respectively, separated by an annular space, comprising at least one electrical heating cable (10) capable of being subjected to an elongation of 0.5% without sustaining damage and produced, for example, in the form of a central conducting braided cable surrounded by an electrically insulating sheath. The materials comprising the cable are subjected to elastically deformation by remaining below 15% of their elastic limit and preferably below 5%.
Claims14
A rigid pipe for transporting hydrocarbons the pipe being a reelable type and being comprised of two coaxial pipes, including an inner and an outer pipe, respectively, the pipes being separated by an annular space, the rigid pipe further comprising at least one electrical heating cable extending through the pipe in the annular space and rectilinearly disposed along one external surface of the inner pipe, with thermally insulating material filling the annular space, wherein the cable is capable of undergoing an elongation of at least 0.5% without damage.
A rigid pipe for transporting hydrocarbons the pipe being a reelable type and further comprising at least one electrical heating cable extending through the pipe, wherein the cable is capable of undergoing an elongation of at least 0.5% without damage, further comprising an electrical supply circuit to the cable, and connection boxes at different locations on the electrical supply circuit, for automatically locally re-establishing the connection between phases of the circuit in the event of failure of the circuit.
Dependencies are inferred from the claim text.