Combined turbine stator cooling and turbine tip clearance control
US5048288A · kind A · utility
92Cited by
8References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 13, 1990 |
| Grant date | Sep 17, 1991 |
| Priority date | — |
| Expiry date | Nov 13, 2010 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01D11/24
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The outer air seal of a gas turbine engine is continuously cooled by compressor discharge air (primary) and a by-pass line (secondary) which can be throttled or shut off, augments cooling during high power conditions and is throttled or shut off at reduced power conditions, allowing the casing scrubbed by fan discharged air to shrink and reduce the clearance of the tips of the turbine blades. The air from the continuous flow (primary) line is routed to the outer air seals in a manner to avoid scrubbing the engine case.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.