Condenser tube-to-tubesheet joint improvement
US10357816B1 · kind B1 · utility
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1References
7Claims
0Family size
Inventor
Key dates
| Filing date | Sep 6, 2016 |
| Grant date | Jul 23, 2019 |
| Priority date | — |
| Expiry date | Aug 1, 2037 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23P11/005
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A tube-to-tubesheet joint for steam condensers having a plurality of holes drilled in condenser tubesheets, a plurality of 8 mil triangular cut serrations in the wall surface of each hole, locating the serrations in a set positioned centrally of the wall surface, inserting a tube end into each hole, and forming a mechanical interference fit between tube wall and hole wall surface. In modified embodiment for thick tubesheets, plural sets of serrations with sets spaced apart may be formed in tubesheet holes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.