Method of repairing by lining heat exchanger tubes
US5155894A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 30, 1990 |
| Grant date | Oct 20, 1992 |
| Priority date | — |
| Expiry date | Aug 30, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/4994
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A method of repairing a defective tube in a heat exchanger of the tube-in-shell type comprises inserting a tubular sleeve into the defective tube and extending through the tube from one tubeplate to the other, and bonding the sleeve to each tubeplate. The extremities of the sleeve are preferably welded to the outer surface of the respective tubeplate. In repairing a defective tube which has one end which is bonded to a tubular tubeplate boss having a bore which is of larger diameter than the external diameter of the tube, the diameter of a poriton of the sleeve is preferably expanded to fit the bore of the tubeplate boss after insertion of the sleeve into the tube.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.