Turbomachine blade-to-rotor sealing arrangement
US6375429B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 5, 2001 |
| Grant date | Apr 23, 2002 |
| Priority date | — |
| Expiry date | Feb 5, 2021 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01D11/006
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A turbomachine rotor blade having a dovetail-type base member, a platform carried by the base member, and an airfoil extending longitudinally from the platform in a direction opposite to that of the base member. The platform includes a forward seal wire groove and an aft seal wire groove, each of which is on opposite sides of the blade longitudinal axis and on the side of the platform facing the base member. The blade platform has a pair of recesses that each include a concave portion and an adjacent inclined ramp portion for urging a seal wire into surface-to-surface contact with the concave portions of the respective recesses. Wear of the blade platform caused by seal wire movement relative to the blade platform is significantly reduced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.