US4959954A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas turbine system and method of controlling the same
Assignee: Hitachi Ltd
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Filing: 1988-11-30
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Granted: 1990-10-02
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Expires: 2008-11-30
Abstract
Abstract A gas turbine system having an extraction channel supplying part of the discharged air of a compressor to another installation, and a method of controlling the gas turbine system wherein an inlet guide vane or any other regulator for regulating the flow rate of inlet air is disposed at the inlet of the compressor of a gas turbine engine, and the flow rate of the inlet air of the compressor is controlled in correspondence with the fluctuation of the flow rate of extraction air to provide a gas turbine system and a controlling method therefore which do not adversely affect the efficiency of the gas turbine engine regardless of the fluctuations of the flow rate of the extraction air.
Inventors
- 👤 Tsunemasa Nishijima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:41
CPC Classifications
F; F02; F02C; F02C6/00; F02C6/04; F02C6/06; F02C6/08; F02C7/00; F02C7/04; F02C7/057
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
108 words
In a gas turbine engine of an extracting operation type wherein a part of discharge air from a compressor is extracted and released to another installation, while a remaining part of the discharge air is supplied to a gas turbine combustor as air for combustion, a method of controlling the gas turbine engine comprising the steps of detecting a load driven by said gas turbine engine, and controlling a flow rate of inlet air of said compressor by adjusting said flow rate of inlet air in dependence upon a flow rate of extraction air and a desired flow rate of combustion air evaluated from a detected load value.
Claim 2
Dependent Claim
108 words
In a gas turbine engine of an extracting operation type wherein a part of discharge air from a compressor is extracted and released to another installation, while a remaining part of the discharge air is supplied to a gas turbine combustor as air for combustion, a method of controlling the gas turbine engine comprising the steps of detecting a load driven by said gas turbine engine, and controlling a flow rate of inlet air of said compressor by adjusting said flow rate of inlet air in dependence upon a flow rate of extraction air and a desired flow rate of combustion air evaluated from a detected load value.
Claim 3
Dependent Claim
43 words
A method of controlling a gas turbine as defined in claim 1, wherein said compressor includes an inlet guide vane, and said flow rate of inlet air of said compressor is controlled by adjusting a degree of opening of said inlet guide vane.
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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) | 1993-10-01 | 1994-04-02 | 1994-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-10-01 | 1998-04-02 | 1998-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-10-01 | 2002-04-02 | 2002-10-02 | $7700.00 | Window Closed / Lapsed |