Steam cycle for combined cycle with steam cooled gas turbine

In a combined cycle system including a gas turbine (412), a steam turbine (420) and a heat recovery steam generator (436), wherein gas turbine exhaust is used in the heat recovery steam generator (436) for reheating steam for the steam turbine (420), an improvement wherein steam is extracted from th...

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Bibliographische Detailangaben
Hauptverfasser:	TOMLINSON, LEROY O, SMITH, RAUB W
Format:	Patent
Sprache:	eng
Schlagworte:	AIR INTAKES FOR JET-PROPULSION PLANTS BLASTING COMBUSTION ENGINES CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS ENGINE PLANTS IN GENERAL ENGINE PLANTS NOT OTHERWISE PROVIDED FOR ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES GAS-TURBINE PLANTS GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS INDEXING SCHEME FOR ASPECTS RELATING TONON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES ORJET-PROPULSION PLANTS INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUSSUBCLASSES OF CLASSES F01-F04 LIGHTING MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGYGENERATION, TRANSMISSION OR DISTRIBUTION STEAM ACCUMULATORS STEAM ENGINE PLANTS STEAM ENGINES TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE WEAPONS
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Beschreibung
Zusammenfassung:	In a combined cycle system including a gas turbine (412), a steam turbine (420) and a heat recovery steam generator (436), wherein gas turbine exhaust is used in the heat recovery steam generator (436) for reheating steam for the steam turbine (420), an improvement wherein steam is extracted from the high pressure section (422) of the steam turbine 420), conducted to the gas turbine (412) for cooling hot gas turbine parts, and returned to the intermediate pressure section (424) of the steam turbine (420).