Power plants – Combustion products used as motive fluid – Process
Reexamination Certificate
2011-04-12
2011-04-12
Cuff, Michael (Department: 3741)
Power plants
Combustion products used as motive fluid
Process
C060S772000
Reexamination Certificate
active
07921651
ABSTRACT:
The present application provides a method of operating a dual gas fuel delivery system comprising selecting a manifold and fuel flow split; setting the stroke of a high-energy gas control valve based on the fuel split; measuring the primary manifold nozzle pressure ratio across a primary manifold nozzle outlet; comparing the primary manifold nozzle pressure ratio against a primary manifold specification limit; adjusting the stroke of a primary low energy gas control valve to maintain the pressure ratio across the primary manifold nozzle outlet within the primary manifold specification limit; measuring the secondary manifold nozzle pressure ratio across a secondary manifold nozzle outlet; comparing the secondary manifold nozzle pressure ratio against a secondary manifold specification limit; and adjusting the stroke of a secondary low energy gas control valve to maintain the pressure ratio across the secondary manifold nozzle outlet within the secondary manifold specification limit.
REFERENCES:
patent: 3577877 (1971-05-01), Warne
patent: 4949538 (1990-08-01), Iasillo et al.
patent: 6640548 (2003-11-01), Brushwood et al.
patent: 7624564 (2009-12-01), Stuttaford et al.
patent: 7770400 (2010-08-01), Iasillo et al.
Alexander Michael J.
Iasillo Robert J.
Joshi Rahul Mohan
Morankar Jitendra
Cuff Michael
General Electric Company
Kim Craig
Sutherland & Asbill & Brennan LLP
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