Collar clamp assembly for repairing core spray piping
US6293593A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 21, 1999 |
| Grant date | Sep 25, 2001 |
| Priority date | — |
| Expiry date | Oct 21, 2019 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L55/168
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A collar clamp assembly is disclosed for repairing and providing a temporary seal around leaking pipe coupling areas of an internal core spray system of a nuclear reactor. The clamp assembly includes first and second housings having respective first and second ends and a pair of longitudinal edges between the ends. The housings have a tongue and groove mating configuration along the longitudinal edges to seal and accommodate variations in the outside diameter of the core spray piping. A plurality of threaded fasteners are used to secure the first and second housings together to form a closed conduit shaped to receive a length of the core spray piping, including the leaking pipe coupling. First and second seals are located at first and second longitudinally spaced positions, respectively, on each of the first and second housings and extend around the closed conduit. The seals are oriented to seal the housings against the outer circumferential surfaces of the core spray piping on either side of the leaking pipe coupling. A grip structure configured to engage and grip an outer circumferential surface of the core spray piping is provided to prevent the pipe coupling from pulling apart …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.