Bucket tip construction for open circuit liquid cooled turbines

Details Bucket tip construction for open circuit liquid cooled turbines Bucket tip construction for open circuit liquid cooled turbines

F - Mech Eng,Light,Heat,Weapons

01

D

170/71

F01D 5/08 (2006.01) F01D 5/18 (2006.01)

Patent

CA 1078741

BUCKET TIP CONSTRUCTION FOR OPEN CIRCUIT LIQUID COOLED TURBINES Abstract of the Disclosure An ultra-high temperature gas turbine bucket is shown with subsurface cooling channels extending from a bucket platform to a manifold in the tip region of the bucket, A liquid trap is disposed radially outward from the manifold and is in communication therewith, the trap under conditions of normal operation remaining filled with liquid coolant. A liquid coolant discharge orifice communicates with the trap at the blade tip generally adjacent the leading edge thereof. Liquid coolant substantially free of entrained vaporized coolant is discharged from the trap through the discharge orifice and collected in a collection slot in the turbine casing. Vaporized coolant is discharged from a nozzle dis- posed at the trailing edge of the bucket in communication with the manifold.

282835

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