Power plants – Combustion products used as motive fluid – Combined with regulation of power output feature
Reexamination Certificate
2005-12-27
2005-12-27
Rodriguez, William H. (Department: 3746)
Power plants
Combustion products used as motive fluid
Combined with regulation of power output feature
C060S039270
Reexamination Certificate
active
06978597
ABSTRACT:
A gas turbine apparatus is provided wherein a turbine is driven or rotated by burning a mixture of a fuel and compressed air and supplying a combustion gas generated by the combustion. A flameout determination unit is provided in the apparatus which is adapted to calculate the air/fuel ratio in the air/fuel mixture, correct the calculated air/fuel ratio to calculate a corrected air/fuel ratio which is substantially constant, compare the calculated corrected air/fuel ratio with a predetermined reference air/fuel ratio, and generate a signal indicative of occurrence of a flameout when the corrected air/fuel ratio is smaller than the reference air/fuel ratio. The corrected air/fuel ratio is calculated by calculating a deviation of a compressor discharge pressure of the compressed air from an air compressor, from a predetermined reference pressure, multiplying the pressure deviation by a predetermined constant, and adding the pressure deviation multiplied by the predetermined constant to the calculated air/fuel ratio. In this way, the corrected air/fuel ratio can be maintained substantially constant even if a load increases in steps.
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Furuya Tai
Kataoka Tadashi
Marui Eishi
McKelvey Terence
Miyamoto Masahiro
Ebara Corporation
Rodriguez William H.
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