Claims
- 1. An Advanced Cheng Combined Cycle system, comprising:
a gas turbine, having a turbine generating power, a compressor receiving power from the turbine, and a combustion chamber to which is input compressed air from the compressor along with fuel and combustion products for producing energy to drive the turbine, the gas turbine producing a hot stream gas; a heat recovery steam generator receiving hot stream gas produced by the gas turbine and generating high-pressure steam therefrom; a steam turbine receiving and being driven by high-pressure steam generated by the heat recovery steam generator, bleeding intermediate-pressure steam for cooling the turbine and for injection back into the combustion chamber of the gas turbine; and a control valve, throttling down high-pressure steam generated by the heat recovery steam generator to a low-pressure steam for injection back into the combustion chamber of the gas turbine.
- 2. The Advanced Cheng Combined Cycle system as set forth in claim 1, wherein the heat recovery steam generator further comprises a duct burner for increasing the temperature of hot stream gas produced by the gas turbine to produce additional steam for injection back into the combustion chamber of the gas turbine.
- 3. The Advanced Cheng Combined Cycle system as set forth in claim 1, further comprising an emission control system disposed between the gas turbine and the heat recovery steam generator.
- 4. An Advanced Cheng Combined Cycle system, comprising:
a gas turbine, having at least one turbine generating power, a compressor receiving power from the at least one turbine, and a combustion chamber to which is input compressed air discharged from the compressor, along with fuel and combustion products for producing energy to drive the at least one turbine, the gas turbine producing a hot stream gas; a heat recovery steam generator receiving hot stream gas produced by the gas turbine and generating high-pressure steam therefrom; a steam turbine receiving and being driven by high-pressure steam generated by the heat recovery steam generator, bleeding intermediate-pressure steam for cooling the at least one turbine and for injection back into the combustion chamber of the gas turbine; a control valve throttling down high-pressure steam generated by the heat recovery steam generator to a low-pressure steam for injection back into the combustion chamber of the gas turbine; and a duct burner, coupled to the heat recovery steam generator, increasing the temperature of hot stream gas produced by the gas turbine to produce additional steam for injection back into the combustion chamber of the gas turbine.
- 5. The Advanced Cheng Combined Cycle system as set forth in claim 4, further comprising an emission control system disposed between the gas turbine and the heat recovery steam generator.
- 6. An Advanced Cheng Combined cycle system which combines features of a Cheng cycle or Advanced Cheng Cycle with a combined cycle, comprising:
a gas turbine system, having a turbine generating power, a compressor receiving power from the turbine, a first generator receiving power from the turbine, and a combustion chamber to which is input compressed air discharged from the compressor along with fuel and combustion products for producing energy to drive the turbine, the gas turbine system producing a hot stream gas; a heat recovery steam generator receiving hot stream gas produced by the gas turbine system and generating high-pressure steam therefrom; a steam turbine receiving and being driven by high-pressure steam generated by the heat recovery steam generator and powering a second generator, and bleeding intermediate-pressure steam for at least one of injection into the turbine for cooling the turbine and injection into the combustion chamber of the gas turbine system; a valve throttling down high-pressure steam generated by the heat recovery steam generator to a low-pressure steam for injection into the combustion chamber of the gas turbine system; a duct burner, coupled to the heat recovery steam generator, generating additional steam for injection into the combustion chamber of the gas turbine system; and controls, controlling electric power generated by the first and second generators.
- 7. The Advanced Cheng Combined cycle system as set forth in claim 6, further comprising an emission control system disposed between the gas turbine system and the heat recovery steam generator.
- 8. In an Advanced Cheng Combined Cycle engine of the type having:
a gas turbine, having a turbine generating power, a compressor receiving power from the turbine, and a combustion chamber to which is input compressed air discharged from the compressor, along with fuel and combustion products for producing energy to drive the turbine, the gas turbine producing a hot stream gas; a heat recovery steam generator receiving hot stream gas produced by the gas turbine; and a steam turbine, connected to the heat recovery steam generator; a method of operation of the Advanced Cheng Combined Cycle engine comprising the steps of: generating, in the heat recovery steam generator, high-pressure steam from hot stream gas produced by the gas turbine; driving the steam turbine using high-pressure steam generated by the heat recovery steam generator; bleeding intermediate-pressure steam from the steam turbine for cooling the turbine and for injection back into the combustion chamber; and throttling down high-pressure steam generated by the heat recovery steam generator to a low-pressure steam for injection back into the combustion chamber of the gas turbine.
REFERENCE TO RELATED APPLICATION
[0001] This present application claims the benefit of provisional Application Serial No. 60/191,599 filed on Mar. 24, 2000, which is hereby incorporated by reference.
Provisional Applications (1)
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Number |
Date |
Country |
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60191599 |
Mar 2000 |
US |