Gas turbine bucket with serpentine cooled platform and related method
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United States of America Patent
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May 21, 2013
Grant Date -
Sep 29, 2011
app pub date -
Mar 26, 2010
filing date -
Mar 26, 2010
priority date (Note) -
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Abstract
A cooling circuit for a turbine bucket having a shank, a platform and an airfoil. The cooling circuit includes a first cooling passage extending from an inlet located at a radially inward end of the shank and adapted to communicate with a turbine wheel-space, the first cooling passage, in use, supplying cooling air to a serpentine cooling circuit extending within and across at least one region of the platform. The serpentine cooling circuit connects with a separate internal cooling circuit in the airfoil, such that the cooling air used to cool the platform is re-used in the airfoil cooling circuit.
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