Platform cooling mechanism and method for forming a platform cooling mechanism on a turbine rotor blade

摘要

Platform cooling arrangements (150) in a turbine rotor blade (100) include a feedhole (160) that extends from the suction side slash face (122) to the interior cooling passage (116), and, one or more branch holes (170) that each extends from the feedhole (160) to the suction side slash face (122) such that coolant flows from the interior cooling passage (116), through the feedhole (160) to the one or more branch holes (170) and exits the platform (110) along the suction side slash face (122).