Sealing system for rotors
US4161318A · kind A · utility
19Cited by
9References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 14, 1978 |
| Grant date | Jul 17, 1979 |
| Priority date | — |
| Expiry date | Mar 14, 1998 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01D11/10
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Turbine blade shrouds are sealed by injecting air on to the shroud immediately upstream of a shroud seal. This air serves two purposes: it creates a turbulent flow immediately upstream of the shroud seal, thus spoiling and reducing the leakage flow over the seal, and the hot gases which would otherwise leak over the seal are replaced by the cooler air, thus reducing energy wastage and improving S.F.C. (specific fuel consumption).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.