Flush tenon cover for steam turbine blades with advanced sealing
US6679681B2 · kind B2 · utility
4Cited by
8References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 10, 2002 |
| Grant date | Jan 20, 2004 |
| Priority date | — |
| Expiry date | Apr 10, 2022 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01D5/225
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Steam turbine buckets have radially projecting tenons received in openings of covers. The covers are provided with a profiled surface, with recesses or radially outwardly projecting teeth, or both, to form a gap between the cover and a stationary component having increased pressure drop with resulting decreased leakage flow and reduced potential for solid particle erosion. In the profiled cover surface, the outer surface of the tenon and outer surface of the cover are machined to form the recesses or teeth, affording a flush cover/tenon design with improved sealing efficiencies and reduced solid particle erosion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.