Method for creating a platform cooling passage in a turbine rotor blade and corresponding turbine rotor blade

摘要

A method for creating a platform cooling passage (136) in a turbine rotor blade (100), wherein the turbine rotor blade (100) comprises a platform (110) at an interface between an airfoil (102) and a root (104), wherein the platform (110) includes a platform topside (113) along an outboard surface. The method may include the steps of forming a recessed area (133) along the platform topside (113); forming a coverplate (137); and affixing the coverplate (137) to the platform topside (113). The coverplate (137) may be configured to correspond to the shape of the recessed area (133) such that, when affixed to the platform topside (113) in a desired manner, the coverplate (137) substantially encloses the recessed area (133) to form the platform cooling passage (136) therein. A corresponding platform cooling passage is also provided.