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1. (WO2001002767) DEVICE FOR LIMITING PROPAGATION OF DEFORMATION IN A WOUND DOUBLE-WALLED TUBE

Pub. No.:    WO/2001/002767    International Application No.:    PCT/FR2000/001633
Publication Date: Fri Jan 12 00:59:59 CET 2001 International Filing Date: Wed Jun 14 01:59:59 CEST 2000
IPC: F16L 9/18
F16L 11/08
F16L 11/20
Applicants: COFLEXIP
BASTARD, Antoine
REMERY, Jeroen
Inventors: BASTARD, Antoine
REMERY, Jeroen
Title: DEVICE FOR LIMITING PROPAGATION OF DEFORMATION IN A WOUND DOUBLE-WALLED TUBE
Abstract:
The invention concerns a device for limiting propagation of deformation in a double-walled tube. The invention is characterised in that it consists of an element rotating and deformable in a transverse direction relative to said longitudinal axis, said deformable element (10) being arranged in the annular space (6) and comprising an outer surface (11) which is in contact with the inner wall (12) of the external tube (4) over at least two points, and an inner surface (13) spaced apart from the internal tube (2). The invention is particularly applicable to pipes used in the oil industry.