US3859795A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Load control for closed cycle gas turbine
Assignee: Brown Boveri Sulzer Turbomaschinen AG
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Filing: 1973-10-01
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Granted: 1975-01-14
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Expires: 1993-10-01
Abstract
Abstract Load control arrangement for a closed cycle gas turbine plant which has an endless path of flow for the working medium; a compressor a heater and a turbine are situated in succession to one another in the said path of flow; a storage vessel for a part of the working medium can be connected selectively to two points on the path of flow which are under different pressures to one another; at least the point which is under relatively low pressure is situated between two stages of the compressor.
Inventors
- 👤 Hansulrich Frutschi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:13
CPC Classifications
F; F02; F02C; F02C6/00; F02C6/04; F02C6/10; F02C6/14; F02C6/16; F02C9/00; F02C9/16; F02C9/24; Y; Y02; Y02E; Y02E60/00; Y02E60/16
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
85 words
A closed cycle gas turbine plant including an endless flow path which leads working medium in series through a compressor, or heater and a turbine; a storage vessel for a part of the working medium; and means for selectively connecting the storage vessel to two points in said flow path which are under different pressures; and characterized in that at least the lower pressure one of said points to which the selecting means connects the storage vessel is situated between two stages of the compressor.
Claim 2
Dependent Claim
85 words
A closed cycle gas turbine plant including an endless flow path which leads working medium in series through a compressor, or heater and a turbine; a storage vessel for a part of the working medium; and means for selectively connecting the storage vessel to two points in said flow path which are under different pressures; and characterized in that at least the lower pressure one of said points to which the selecting means connects the storage vessel is situated between two stages of the compressor.
Claim 3
Dependent Claim
37 words
A plant as deFined in claim 1 including means, effective when the load on the plant is constant, to maintain the pressure of the working medium in the storage vessel between the pressures at said two points.
Claim 4
Dependent Claim
17 words
A plant as defined in claim 1 wherein the compressor is free of any intermediate cooling device.
Claim 5
Dependent Claim
27 words
A plant as defined in claim 1 including an intermediate cooling device for the compressor which has a small volume path of flow for the working medium.
Claim 6
Dependent Claim
57 words
A plant as defined in claim 1 in which the stages of the compressor are so designed that, when working medium is introduced to said lower pressure point, the resulting load decrease of the compressor stage upstream of said point is at least equal to the resulting load increase of the compressor stage downstream of said point.
Claim 7
Dependent Claim
37 words
A plant as defined in claim 1 in which the outlet-inlet pressure ratio of the compressor stage upstream of said lower pressure point is greater than the corresponding ratio for the compressor stage downstream of said point.
Claim 8
Dependent Claim
38 words
A plant as defined in claim 1 in which the compressor stage upstream of said lower pressure point has a shallow power-volume flow characteristic, and the compressor stage downstream of said point has a steep power-volume flow characteristic.
References Cited (Backward Citations)
US3220191A
Cited
US3699681A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-01-13 | 1978-07-15 | 1979-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-13 | 1982-07-15 | 1983-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-13 | 1986-07-15 | 1987-01-14 | $7700.00 | Window Closed / Lapsed |