Power plants – Combustion products used as motive fluid – Process
Reexamination Certificate
2011-05-31
2011-05-31
Cuff, Michael (Department: 3741)
Power plants
Combustion products used as motive fluid
Process
C060S776000, C060S039094
Reexamination Certificate
active
07950238
ABSTRACT:
A method is provided for performing a transfer from gas fuel operation to liquid fuel operation in a gas turbine with a dual fuel system. The method includes initiating a predetermined uncontrolled liquid fuel prefill flow rate through the liquid fuel system, sensing an onset of the uncontrolled liquid fuel flow to the combustor nozzles, and initiating transfer from gas fuel operation to liquid fuel operation when the flow of uncontrolled liquid fuel at the combustor nozzles is sensed. The onset of uncontrolled liquid fuel flow to the combustor nozzles is determined by monitoring changes of Fuel Normalized Power (FNP), a parameter sensitive to uncontrolled liquid fuel flow, and determining when FNP exceeds a threshold algorithm value.
REFERENCES:
patent: 3344602 (1967-10-01), Davies et al.
patent: 6438963 (2002-08-01), Traver et al.
patent: 7322198 (2008-01-01), Roby et al.
patent: 7451602 (2008-11-01), Marakovits et al.
Fuller Jason D.
Iasillo Robert J.
Seely William F.
Cuff Michael
Cusick Ernest G.
Dwivedi Vikansha S
General Electric Company
Landgraff Frank A.
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