Power plants – Combustion products used as motive fluid
Patent
1990-10-01
1991-08-27
Casaregola, Louis J.
Power plants
Combustion products used as motive fluid
F02C 618
Patent
active
050422472
ABSTRACT:
A gas turbine is solidly coupled with rigid couplings in tandem with a reheat steam turbine and utilizes the combined inertia of the rotating members and the braking torque of the gas turbine air compressor to assist a single control system to limit overspeed of the complete unit. In its broadest and preferred form, the normal intercept steam valves and reheat stop valve between the reheater and the lower pressure steam turbine sections are eliminated, and the high pressure steam control valves are used to prevent overspeed, with steam flowing through a "valveless" conduit from the reheater to the lower pressure steam turbine sections. The control system includes means for sensing a potential overspeed condition and operating the control valves to prevent overspeed.
In a modified form of the invention a dump valve may be provided between the air compressor discharge and the combustion chamber of the gas turbine. In the modified form the control system will also open the dump valve, or the dump valve may open automatically upon compressor discharge pressure exceeding a preselected value.
REFERENCES:
patent: 2936028 (1960-05-01), Gatzemeyer et al.
patent: 3097488 (1963-07-01), Eggenberger et al.
patent: 3098190 (1963-07-01), Spencer et al.
patent: 3150487 (1964-09-01), Mangan et al.
patent: 3198954 (1965-08-01), Eggenberger et al.
patent: 3340883 (1967-09-01), Peternel
patent: 3418806 (1968-12-01), Wagner et al.
patent: 3505811 (1970-04-01), Underwood
patent: 3520133 (1970-07-01), Loft et al.
patent: 3561216 (1971-02-01), Moore, Jr.
patent: 3601617 (1971-05-01), De Mello et al.
patent: 3738104 (1973-06-01), Rosa
patent: 3756029 (1973-09-01), Aguet
patent: 3879616 (1975-04-01), Baker et al.
patent: 3978658 (1976-09-01), Forbes et al.
patent: 4081956 (1978-04-01), Baker et al.
patent: 4519207 (1985-05-01), Okabe et al.
patent: 4532761 (1985-08-01), Takaoka et al.
Shepherd, D. G. Principles of Turbomachinery McMillen Company, N.Y., 1956, p. 50.
Patent Abstracts of Japan, vol. 7, No. 169 (M-231)(1314) Jul. 26, 1983 & JP-A-58 74809, May 6, 1983.
Patent Abstracts of Japan, vol. 10, No. 261 (M-514)(2317) Sep. 5, 1986 & JP-A-61 87902, May 6, 1986.
Casaregola Louis J.
General Electric Company
LandOfFree
Overspeed protection method for a gas turbine/steam turbine comb does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Overspeed protection method for a gas turbine/steam turbine comb, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Overspeed protection method for a gas turbine/steam turbine comb will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1406110