Double-sheath pipe for transporting fluids, provided with a device for limiting propagation of a buckle of the outer tube and method for limiting propagation
US7234492B2 · kind B2 · utility
4Cited by
11References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 20, 2001 |
| Grant date | Jun 26, 2007 |
| Priority date | — |
| Expiry date | Oct 23, 2022 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L9/18
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
The invention concerns a double-sheath rigid pipe for transporting hydrocarbons consisting of two respectively inner (2) and outer (3) coaxial tubes separated by an annular gap (5), said pipe being adapted to be wound and comprising a device limiting the propagation of a deformation occurring on the outer tube, wherein a radial stop device (10) linked to the inner tube (2) but not linked to the outer tube (3) allows a localized collapse of value G of the outer tube, G being selected to stop the propagation of a deformation of the outer tube (3).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.