Device for regulating turbine blade tip clearance
US3975901A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 22, 1975 |
| Grant date | Aug 24, 1976 |
| Priority date | — |
| Expiry date | Jul 22, 1995 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01D11/24
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A device for automatically regulating the clearance between the tips of the otor blades of a turbine, particularly of a gas turbine, and the adjacent wall of a turbine stator, comprising means for directing a gaseous flow against the said wall to regulate its temperature. This gaseous flow is obtained from a proportioner including at least two inlet passages connected to sources of gas at different temperatures and controlled by the thermal expansion of an obturator responsive to the temperature of fluid passing through the turbine, so as to reduce the temperature of the said gaseous flow as the obturator expands, in order to cool the stator in stable conditions and to heat it in transitory conditions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.