公开(公告)号：FR2833063B1

公开(公告)日：2007-04-06

申请号：FR0115663

申请日：2001-12-04

Applicant: BOUYGUES OFFSHORE

Inventor： CHENIN LAURENT ,  PIONETTI FRANCOIS REGIS ,  SAFAKHAH ALAIN ,  ROCHER XAVIER

IPC: F16L1/20 ,  F16L9/04 ,  F16L9/06 ,  F16L58/10

Abstract: The present invention relates to a reinforced undersea unit pipe element (1) suitable for being laid empty at great depth. The element includes a tubular wall, having at least one external peripheral reinforcing element (6, 7) creating a plurality of localized zones on the outside surface of the wall, the radial distance (d1) between the outside surface of the pipe and the longitudinal axis (XX') of the wall in the zones being greater than the outside radius (R) of the tubular wall portions lying between the successive zones in the longitudinal direction (XX'), two successive ones of the zones being spaced apart in the longitudinal direction (XX') of the tubular wall by a distance (D) equal to ½ to 4 times the outside diameter (d) of the tubular wall portions, the successive zones preferably being spaced apart regularly.

公开(公告)号：FR2833063A1

公开(公告)日：2003-06-06

申请号：FR0115663

申请日：2001-12-04

Applicant: BOUYGUES OFFSHORE

Inventor： CHENIN LAURENT ,  PIONETTI FRANCOIS REGIS ,  SAFAKHAH ALAIN ,  ROCHER XAVIER

IPC: F16L9/04 ,  F16L1/20 ,  F16L9/06 ,  F16L58/10

Abstract: The invention concerns a reinforced submarine pipeline comprising a tubular wall, characterized in that said wall includes at least an outer peripheral reinforcing element (6, 7) producing a plurality of zones localized on the outer surface of said wall, the radial distance (d 1 ) between the pipeline outer surface and said wall longitudinal axis (XX') at said zones being greater than the external radius (R) of the portions of tubular walls separating said successive zones in said longitudinal direction (XX'), said two successive zones being spaced apart from said longitudinal direction (XX') of said tubular wall, by a distance (D) from half to four times, preferably once to three times, the external diameter (d) of said tubular wall portions, preferably said successive zones being uniformly spaced apart. The invention also concerns an assembly of two coaxial pipelines (9) comprising an outer pipeline (10) containing an inner pipeline (11) linked together by mechanical centering links (13) preferably consisting of plastic material parts, more preferably elastomeric, the gap (12) between said two outer and inner pipelines preferably comprising an insulating material, characterized in that said outer pipeline comprises at least the inventive pipeline.