Turbine bucket with a core cavity having a contoured turn

摘要

The present application thus provides a turbine bucket. The turbine bucket may include a platform, an airfoil extending from the platform at an intersection thereof, and a core cavity extending within the platform and the airfoil. The core cavity may include a contoured turn about the intersection so as to reduce thermal stress therein.

主权项

1. A turbine bucket, comprising:
a platform; an airfoil extending from the platform at an intersection thereof, the airfoil comprising a leading edge and a trailing edge; and a core cavity extending within the platform and the airfoil, the core cavity comprising a cooling conduit with a cooling passage extending therethrough; wherein the core cavity comprises a contoured turn about the intersection so as to reduce thermal stress therein, such that the cooling conduit curves towards the trailing edge and exits therethrough; and wherein the cooling passage increases in cross-sectional area between the platform and the trailing edge.