Underwater conduit for fluid transport

US9027606B2 · kind B2 · utility

Assignee

• NEXANS · FR

Inventors

• Christian Frohne · Hannover, DE
• Ketil Opstad · Sandefjord, NO
• Jon-Arne Hall · Sarpsborg, NO

Key dates

• Filing date: May 13, 2011
• Grant date: May 12, 2015
• Expiry date: Jun 6, 2032

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16L59/153
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A pipe for underwater transportation of fluid is indicated which includes a pressure-tight metal inner pipe for conducting the fluid, wherein for its stabilization in radial direction at least one profiled metal strand and for stabilizing in the axial direction at least one tension-proof strand are wound around the inner pipe. The inner pipe (1) is a metal pipe which is corrugated transversely of its longitudinal direction and which for stabilization in the radial direction is surrounded by at least one first radial reinforcement (3) which is composed of a profiled helically extending profile strip whose windings are placed closely next to each other or engage each other and are hooked together. Arranged around the first radial reinforcement (3) is arranged a metal pipe corrugated transversely of its longitudinal direction as the outer pipe (5); at least two layers of tension-proof strands (7, 8) are wound around the outer pipe (5), preferably with oppositely directed pitch.