Cooling of turbine rotors in gas turbine engines
Abstract
Abstract THE DISCLOSURE SHOWS A GAS TURBINE ENGINE HAVING A COMPRESSOR, COMBUSTOR, AND TURBINE SEQUENTIALLY ARRANGED. A ROTATING, AIR ENTRY CHAMBER IS FORMED AT THE BASE OF THE TANGS OF TURBINE BUCKETS, WHICH PROJECT FROM THE TURBINE ROTOR INTO THE HOT GAS STREAM FROM TEH COMBUSTOR. A RELATIVELY STATIONARY, ANNULAR NOZZLE FORMS THE ENTRANCE TO THIS ROTATING CHAMBER. AIR IS DUCTED FROM THE DISCHARGE OF THE COMPRESSOR TO THIS NOZZLE. THE NOZZLE IS PROVIDED WITH VANES WHICH ACCELERATE THE COMPRESSOR DISCHARGE AIR INTO THE ROTATING CHAMBER WHICH IS AT A LOWER PRESSURE. THE NOZZLE IMPARTS, TO THE COOLING AIR, A VELOCITY VECTOR HAVING A COMPONENT RELATIVE TO THE ROTATING CHAMBER (AND TURBINE ROTOR), WHICH IS GENERALLY AXIAL. THE AIR IS REDUCED IN STATIC TEMPERATURE, AS IT IS ACCELERATED THROUGH THE NOZZLE, AND ENERGY LOSSES ARE MINIMIZED DUE TO THE VELOCITY VECTOR OF THE COOLING AIR BEING ESSENTIALLY AXIAL RELATIVE TO OPENINGS IN THE TURBINE ROTOR, WHICH THE AIR ENTERS TO FLOW THROUGH PASSAGEWAYS PROVIDING AN INTERNAL COOLING MECHANISM FOR THE TURBINE BUCKETS.
Inventors
- 👤 Melvin Bobo
- 👤 Bruce O Buckland
- 👤 Eugene E Stoeckly
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-22 | 1974-08-24 | 1975-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-22 | 1978-08-24 | 1979-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-22 | 1982-08-24 | 1983-02-23 | $7700.00 | Window Closed / Lapsed |