Process of replacing a sleeve mounted within a pipe
US4682725A · kind A · utility
8Cited by
6References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 7, 1985 |
| Grant date | Jul 28, 1987 |
| Priority date | — |
| Expiry date | Mar 7, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T82/2529
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
Process of replacing a sleeve mounted within a pipe, and devices for carrying out that process. The process consists in making a pair of cross cuts in the pipe (1'), withdrawing the section thus obtained and the sleeve (5'), machining chamfers on the free ends of the pipe (1'), checking the position and the geometry of the blocks (6'), welding into the gap in the pipe (1') a new section, onto the internal wall of which one of the ends of a new sleeve (5') has previously been welded. The invention can be applied to the circuits of pressurized-water nuclear power stations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.