Center-located cutter teeth on shrouded turbine blades
US6805530B1 · kind B1 · utility
19Cited by
4References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 18, 2003 |
| Grant date | Oct 19, 2004 |
| Priority date | — |
| Expiry date | Apr 18, 2023 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2260/6022
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The shroud includes a seal extending continuously between leading and trailing edges of the shroud at the tip of the airfoil. A cutter tooth is provided substantially medially of the shroud and in substantial radial alignment with a line through the center of mass of the airfoil. In this manner, any moment arm generated by movement of the shroud is eliminated or minimized to reduce the stresses in the fillet region between the shroud and the airfoil tip and hence increase the creep life of the bucket.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.