Patent ID: 6748733
Filing Date: 2004-06-15
Classification: F01K,F02C,Y02E

Abstract:
A combined cycle plant, comprising:a gas turbine section including one or more turbine stages for expanding a combustion gas, the one or more stages having an inlet that receives the combustion gas and an outlet that exhausts the combustion gas when fully expanded by the one or more turbine stages; a gas diversion system fluidly coupled to the inlet and the outlet of the one or more turbine stages, the gas diversion system including a unitary flow regulation device to selectively divert a portion of the combustion gas from the inlet to the outlet; a control system adapted to receive input signals from selected sensors positioned in the plant and capable of exchanging signals with the gas diversion system to controllably divert the combustion gas from the inlet to the outlet; and a steam cycle section fluidly coupled to the outlet of the one or more turbine stages, wherein the steam cycle section further includes a heat recovery steam generator fluidly coupled to the outlet of the gas turbine section, and the selected sensors include at least one temperature sensor coupled to the steam generator capable of communicating a signal corresponding to a steam temperature within the generator to the control system, and at least one pressure sensor coupled to the steam generator capable of communicating a signal corresponding to a steam pressure within the generator to the control system.