Reinforced elongated elements, such as tubes, method and device for producing same and use thereof
AssigneeSociete Des Fibres De Carbone
InventorsMichel Brisson, Guy Dupupet, Jean Luyckx
Life of this patent
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Abstract
a reinforced elongate element (12) comprises a core (22) of elongate shape covered by at least one layer (33) of composite material comprising a plurality of tapes (32) wound at a settable winding angle around said core (22), each of the tapes (32) being made using glass or carbon threads or fibers (35) embedded in a matrix (34) of thermoplastic resin. The elongate element may be in the form of very long tubes suitable for use off-shore.
Claims19
A reinforced offshore pipe defining a longitudinal axis, having two main ends, a first proximal end aimed to be close to the water surface and a second distal end aimed to be located in the depth of the water, comprising a core of elongate shape externally coated with at least one layer of composite material extending continuously from the first proximal end to the second distal end, the composite material comprising at least one tape wound outside and around said core, each of the at least one tape being made from reinforcing threads or fibers embedded in a matrix of thermoplastic resin, each of the at least one tape is wound around the core at a predetermined settable winding angle relative to the longitudinal axis of the elongate element, the winding angle for the at least one tape varying from the first proximal end to the second distal end along the longitudinal axis, thereby varying the mechanical strength from the first proximal end to the second distal end of the offshore pipe.
A reinforced offshore tube defining a longitudinal axis, having two main ends, a first proximal end aimed to be close to the water surface and a second distal end aimed to be located in the depth of the water, comprising a tubular core of elongate shape externally coated with at least one layer of composite material comprising at least one tape wound outside and around said core, each of the at least one tape being made from reinforcing threads or fibers embedded in a matrix of thermoplastic resin, each of the at least one tape is wound around the core at a predetermined settable winding angle relative to the longitudinal axis, the winding angle for the at least one tape, from the first proximal end to the second distal end, varying progressively along the longitudinal axis from a winding angle of 20 to 25° in the vicinity of the first proximal end to a winding angle of 60 to 80° near the second distal end, thereby varying the mechanical strength from the first proximal end to the second distal end of the offshore tube.
A reinforced offshore pipe defining a longitudinal axis, having two main ends, a first proximal end aimed to be close to the water surface and a second distal end aimed to be located in the depth of the water, comprising a core of elongate shape externally coated with at least one layer of composite material comprising at least one tape wound outside and around said core, each of the at least one tape being made from reinforcing threads or fibers embedded in a matrix of thermoplastic resin, each of the at least one tape is wound around the core at a predetermined settable winding angle relative to the longitudinal axis, the winding angle for the at least one tape varying from the first proximal end to the second distal end along the longitudinal axis, said winding angle ranging between 20 and 25° near one among the first proximal end and of the second distal end, thereby varying the mechanical strength from the first proximal end to the second distal end of the off shore pipe.
Dependencies are inferred from the claim text.