US3973396A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas turbine power plant
Assignee: United Turbine AB and Co KG
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Filing: 1974-10-16
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Granted: 1976-08-10
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Expires: 1994-10-16
Abstract
Abstract The cooling of a gas turbine is a critical problem and will consume a considerable quantity of compressed air at the temperature ordinarily available. To improve the cooling properties, a portion of the air delivered by the compressor is divided off and is conveyed to an expansion member, where it is further divided into a hot and a cold fraction. This cold fraction, which can have a temperature well below the freezing point, is used, preferably mixed with air delivered directly from the compressor, for cooling the turbine inlet means.
Inventors
- 👤 Sven-Olof Kronogard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:11
CPC Classifications
F; F02; F02C; F02C7/00; F02C7/12; F02C7/16; F02C7/18; F02C7/185; F25; F25B; F25B9/00; F25B9/02; F25B9/04; F05; F05D; F05D2260/00; F05D2260/20; F05D2260/209
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
138 words
A gas turbine power plant comprising at least one compressor, at least one combustion chamber and at least one turbine and further including means for dividing off a portion of the compressed air delivered by the compressor for cooling the turbine, the improvement of an expansion member including means arranged to divide a supply fluid into a hot fraction and a cold fraction, means for conveying said divided-off portion of compressed air to said expansion member, further means for conveying at least part of said cold fraction to the inlet means of the said at least one turbine, means for conveying a further portion of the air delivered by the compressor directly to the inlet means of the turbine; and means for mixing this further portion of air with the cold fraction conveyed to the turbine inlet means.
Claim 2
Dependent Claim
138 words
A gas turbine power plant comprising at least one compressor, at least one combustion chamber and at least one turbine and further including means for dividing off a portion of the compressed air delivered by the compressor for cooling the turbine, the improvement of an expansion member including means arranged to divide a supply fluid into a hot fraction and a cold fraction, means for conveying said divided-off portion of compressed air to said expansion member, further means for conveying at least part of said cold fraction to the inlet means of the said at least one turbine, means for conveying a further portion of the air delivered by the compressor directly to the inlet means of the turbine; and means for mixing this further portion of air with the cold fraction conveyed to the turbine inlet means.
Claim 3
Dependent Claim
27 words
The gas turbine power plant according to claim 1, in which the means for mixing the directly supplied compressed air and the cold fraction includes an ejector.
Claim 4
Dependent Claim
33 words
The gas turbine power plant according to claim 1, said plant including a gas side; and means for conveying the hot fraction from the expansion member to the gas side of the plant.
Claim 5
Dependent Claim
53 words
The gas turbine power plant according to claim 1, in which the means for mixing said further portion of air with said cold fraction of air includes a mixing chamber, governing valves in the means conveying air to said mixing chamber and a sensor at the turbine inlet for monitoring said governing valves.
References Cited (Backward Citations)
US2644315A
Cited
US2839901A
Cited
US2786341A
Cited
US2839898A
Cited
US2839900A
Cited
US2940257A
Cited
US3123283A
Cited
US3361336A
Cited
US3535873A
Cited
US3584458A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-08-10 | 1980-02-09 | 1980-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-08-10 | 1984-02-09 | 1984-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-08-10 | 1988-02-09 | 1988-08-10 | $7700.00 | Window Closed / Lapsed |