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Bucket platform cooling scheme and related method

United States Patent

November 12, 2002
View the Complete Patent at the US Patent & Trademark Office
A turbine bucket includes an airfoil extending from a platform, having high and low pressure sides; a wheel mounting portion; a hollow shank portion located radially between the platform and the wheel mounting portion, the platform having an under surface. An impingement cooling plate is located in the hollow shank portion, spaced from the under surface, and the impingement plate is formed with a plurality of impingement cooling holes therein.
Abuaf; Nesim (Lincoln City, OR), Barb; Kevin Joseph (Halfmoon, NY), Chopra; Sanjay (Greenville, SC), Kercher; David Max (Ipswich, MA), Kellock; Iain Robertson (Simpsonville, SC), Lenahan; Dean Thomas (Cincinnati, OH), Nellian; Sankar (Mauldin, SC), Starkweather; John Howard (Sharonville, OH), Lupe; Douglas Arthur (Ballston Lake, NY)
General Electric Company (Schenectady, NY)
09/ 739,445
December 19, 2000
This invention was made with Government support under Contract No. DE-FC21-95MC31176 awarded by the Department of Energy. The Government has certain rights in this invention.