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1. (WO2001002764) DEVICE FOR LIMITING PROPAGATION OF DEFORMATION IN A WOUND DOUBLE-WALLED TUBE

Pub. No.:    WO/2001/002764    International Application No.:    PCT/FR2000/001634
Publication Date: Fri Jan 12 00:59:59 CET 2001 International Filing Date: Wed Jun 14 01:59:59 CEST 2000
IPC: F16L 1/14
F16L 57/00
F16L 57/02
Applicants: COFLEXIP
Inventors: BASTARD, Antoine
TOUGH, Gordon
Title: DEVICE FOR LIMITING PROPAGATION OF DEFORMATION IN A WOUND DOUBLE-WALLED TUBE
Abstract:
The invention concerns a device limiting propagation of deformation in a wound double-walled tube (1). Said device comprises an outer wall (3) having a specific external diameter (D) and arranged around the inner wall (2), an annular space (5) being provided between said outer and inner walls. The device is characterised in that it consists in providing predetermined zones (7) in said annular space (5), each predetermined zone (7) being delimited between two sealing stop elements (9) whereof the radially opposite surfaces are in contact with the internal and external tubes; providing a hardenable compound (6) in each predetermined zone (7), the length (L) of each predetermined zone (7) being not less than 0.5 times the external diameter (D) of the outer shell (3).