Patent ID: 9127792
Filing Date: 2015-09-08
Classification: F16L,Y10T

Abstract:
1. A flexible pipe for conveying a cryogenic fluid comprising: an inner corrugated tube having an axis, defining a plurality of corrugations opening radially towards the axis; at least one tensile armor layer, arranged around the corrugated tube; at least one thermal insulation layer, arranged around the armor layer; and an inner sheath for guiding the flow of cryogenic fluid arranged in the corrugated tube, the inner sheath being made up of a plurality of cylindrical segments, wherein each cylindrical segment of the inner sheath covers a plurality of successive corrugations of the corrugated tube and includes an outer abutment for axial wedging received in a corrugation of the corrugated tube, and each cylindrical segment can be moved relative to the corrugated tube over a given axial travel smaller than the pitch of the corrugations of the corrugated inner tube, the given axial travel being defined by the axial travel of the outer abutment in a hollow of a corrugation, each cylindrical segment comprising a cylindrical body made in a single piece with the outer abutment, the outer abutment being formed through local deformation of the cylindrical body.