Cooled turbine blade platform

摘要

A turbine blade assembly (100) is provided. The turbine blade assembly (100) comprises a turbine blade comprising a cavity (138), and a blade platform (120) supporting the turbine blade, the cavity (138) extending into the blade platform (120). The blade platform (120) comprises an upper surface (128) adjacent the turbine blade and a lower surface (130) comprising a first rib (200), the cavity (138) extending into the first rib (200), the first rib (200) coupled to the lower surface (130), tapering as it extends away from the turbine blade, and comprising a first port (132) extending from the cavity (138) to the upper surface (128).