Power plants – Combustion products used as motive fluid – Process
Reexamination Certificate
2011-04-26
2011-04-26
Rodriguez, William H (Department: 3741)
Power plants
Combustion products used as motive fluid
Process
Reexamination Certificate
active
07930890
ABSTRACT:
A method for protecting a gas turbine installation from overheating and for detecting flame extinction in the combustion chamber is described, in which air is compressed in a compressor unit and, after being admixed with fuel, is ignited in the form of a fuel/air mixture in a combustion chamber and is burnt, thus giving rise to a hot gas flow which sets a turbine stage in rotation downstream of the combustion chamber so as to perform expansion work. The pressure upstream of the turbine stage, that is the pressure pkof the compressed air in the plenum and/or the pressure within the combustion chamber pcom, is measured, in that a time change of the measured pressure, what is known as the pressure gradient ({dot over (p)}), is determined, in that at least one threshold value is selected, and in that the pressure gradient or a variable derived from the pressure gradient is compared with the at least one threshold value and, if the threshold value is overshot or undershot, a signal is generated.
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Spitzmueller Tobias
Zhang Mengbin
Alstom Technology Ltd
Buchanan & Ingersoll & Rooney PC
Rodriguez William H
Wongwian Phutthiwat
LandOfFree
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