Method and arrangement for cooling the flow in radial gaps formed between rotors and stators of turbomachines
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United States of America Patent
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Jul 9, 2002
Grant Date -
N/A
app pub date -
Sep 24, 1999
filing date -
Oct 2, 1998
priority date (Note) -
Expired
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Abstract
A method for cooling the flow in radial gaps formed between rotors and stators of turbomachines, which method is improved with regard to its cooling effect. In addition, a simple, cost-effective and robust arrangement for realizing the method is to be specified. According to the invention, this is achieved in that a first cooling fluid is admitted to a stator part adjacent to the radial gap and a second, gaseous cooling fluid is introduced into the radial gap. To this end, either at least one recess is formed in the interior of the stator part adjacent to the radial gap or at least one cavity is arranged at the stator part. The recess or the cavity is connected to both a feed line and a discharge line for the first cooling fluid. In addition, at least one feed passage as well as a discharge device for the second cooling fluid are arranged at the radial gap.
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