Patent US3924141A successfully refreshed from Google Patents.
US3924141A
Expired / Lapsed
US
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Gas turbine power plant control apparatus including a two-shot shutdown system
Assignee: Westinghouse Electric Corp
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Filing: 1973-06-20
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Granted: 1975-12-02
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Expires: 1993-06-20
Abstract
Abstract A gas turbine power plant is provided with an industrial gas turbine which drives a generator coupled to a power system through a breaker. The turbine-generator plant is operated by a hybrid control system having digital function capability during sequenced startup, synchronizing, load buildup and steady state load, and shutdown operations. The control system also contains monitoring and protective subsystems which function through all stages of operation, with redundancy and permissive features which maximize turbine availability.
Inventors
- 👤 Robert A Yannone
- 👤 James J Shields
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:57
CPC Classifications
F; F02; F02C; F02C7/00; F02C7/26
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
191 words
A gas turbine electric power plant including a gas turbine having a compressor, combustion and turbine elements, a generator coupled to said gas turbine for drive power, a generator breaker for coupling said generator to a power system, a fuel system for supplying fuel to said gas turbine combustion element, and a shutdown system for shutting down the operation of said gas turbine, said shutdown system comprising: a. a plurality of monitoring circuits, each having means for signaling the occurrence of a specified condition in the operation of said turbine requiring shutdown of same; b. means for shutting down said turbine upon receiving a signal from one of said monitoring circuits; c. means for enabling automatic restart of said turbine after such a shutdown, when the condition causing shutdown is removed; d. a count-down counter connected to each of said monitoring circuits such that it is counted down upon each occurrence which causes a shutdown; e. a timer connected to said counter and adapted to reset said counter after a predetermined time period; and f. means for disenabling said enabling means when said counter has counted down to a predetermined level.
Claim 2
Dependent Claim
191 words
A gas turbine electric power plant including a gas turbine having a compressor, combustion and turbine elements, a generator coupled to said gas turbine for drive power, a generator breaker for coupling said generator to a power system, a fuel system for supplying fuel to said gas turbine combustion element, and a shutdown system for shutting down the operation of said gas turbine, said shutdown system comprising: a. a plurality of monitoring circuits, each having means for signaling the occurrence of a specified condition in the operation of said turbine requiring shutdown of same; b. means for shutting down said turbine upon receiving a signal from one of said monitoring circuits; c. means for enabling automatic restart of said turbine after such a shutdown, when the condition causing shutdown is removed; d. a count-down counter connected to each of said monitoring circuits such that it is counted down upon each occurrence which causes a shutdown; e. a timer connected to said counter and adapted to reset said counter after a predetermined time period; and f. means for disenabling said enabling means when said counter has counted down to a predetermined level.
Claim 3
Dependent Claim
21 words
The gas turbine electric power plant as set forth in claim 1, wherein said timer times a one hour reset period.
Claim 4
Dependent Claim
23 words
The gas turbine electric power plant as described in claim 2, wherein said counter produces a disenabling signal after counting down two times.
Claim 5
Dependent Claim
47 words
The gas turbine electric power plant as described in claim 3, wherein said enabling means comprises means for switchably connecting power to said monitoring circuits, such that when the condition causing shutdown is removed the monitoring circuit generating the shutdown signal ceases to generate such shutdown signal.
Claim 6
Dependent Claim
28 words
The gas turbine electric power plant as described in claim 4, wherein each of said monitoring circuits includes an alarm which is activated upon each such shutdown occurrence.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-12-01 | 1979-06-02 | 1979-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-01 | 1983-06-02 | 1983-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-01 | 1987-06-02 | 1987-12-02 | $7700.00 | Window Closed / Lapsed |