Power plants – Combustion products used as motive fluid
Patent
1997-02-14
1998-09-15
Casaregola, Louis J.
Power plants
Combustion products used as motive fluid
60 39281, 60746, F02C 926
Patent
active
058062998
ABSTRACT:
A process and a device for quickly switching over from the premixing operation to the diffusion operation in combustion chambers of a gas turbine upon the extinction of the premixing flame or upon the occurrence of a disturbance that may lead to the extinction of the premixing flame. A pilot gas line, into which a pilot gas control valve is inserted, branches off from the fuel gas supply line before the fuel gas valve. The fuel gas supply line branches into fuel supply lines for both combustion chambers after the fuel gas control valve with displacement measurement. The fuel supply to the diffusion gas line and to the premixing gas line is controlled by installing a quick switch-over valve each with servo valves in the branching fuel supply lines. The combustion chambers are monitored in the area of the flame tube by pressure-measuring devices and by an optical flame-monitoring device. The displacement transducer, the monitoring devices, and the servo valves of the quick switch-over valves are wired with a triggering logic unit for quick switch-over.
REFERENCES:
patent: 5024055 (1991-06-01), Sato et al.
patent: 5327718 (1994-07-01), Iwata et al.
patent: 5469700 (1995-11-01), Corbett et al.
patent: 5533329 (1996-07-01), Ohyama et al.
Bauermeister Kurt
Brodmann Michael
Kuper Peter
Moroni Jurgen
Weibel Hans
Casaregola Louis J.
MAN Gutehoffnungshutte Aktiengesellschaft
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