Method for cooling turbine blades/vanes
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United States of America Patent
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Issued Date -
Feb 20, 2003
app pub date -
Aug 12, 2002
filing date -
Aug 17, 2001
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
The present invention relates to a method for cooling the blades/vanes of a main turbine 3 of a gas storage power plant 1, comprising at least: a gas reservoir 10, in which fresh gas is stored under pressure, a main turbine 3 with associated burner 6, a recuperator 7, which associates a fresh gas path 8 with an exhaust gas path 9 so as to transfer heat. The fresh gas path 8 leads from the gas reservoir 10 through the recuperator 7 and through the burner 6 to the inlet 11 of the main turbine 3. The exhaust gas path 9 leads from the outlet 12 of the main turbine 3 through the recuperator 7 to an exhaust gas plant. The cooling method comprises the following features: a cooling gas flow is admitted to the main turbine 3, which cooling gas flow enters the main turbine 3 through the turbine inlet 11, the cooling gas flow is generated by extracting fresh gas from the gas reservoir 10 and/or by switching on of an external fan or compressor 26, which is directly or indirectly coupled to the inlet 11, and this cooling gas flow is preheated in the recuperator 7.
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