Device and process for the heat insulation of at least one underwater pipe at great depth
US6513577B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 29, 2000 |
| Grant date | Feb 4, 2003 |
| Priority date | — |
| Expiry date | Aug 29, 2020 |
Classification
- Technology area (CPC —)General
Abstract
The present invention relates to a device for the heat insulation of at least one underwater pipe (1) intended to be laid on the sea bed at great depth, comprising an insulating coating surrounding the latter and a protective envelope (3), characterized in that said insulating coating comprises a virtually incompressible liquid/solid phase change material (4) with a melting temperature T0 higher than that T2 of the medium surrounding the pipe in operation and less than that T1 of the effluents circulating in the pipe, and said material (4) preferably being impregnated in an absorbent matrix (2) surrounding the pipe (1), preferably nearest its outer surface, which protective envelope (3) is resistant and deformable and ensures a containment against and about said insulating coating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.