LOCATION, MODEL AND CONFIGURATION OF THE COOLING HOLES OF THE SUSTAINING PLAN OF A TURBINE FIN

摘要

First, second and third sets (54, 56, 58) of cooling holes (42) are provided in a turbine support plane (36). The first set of holes (54) adjacent to a leading edge (57), has turbulators (60), starting a predetermined distance from the foot of the lift plane and ending before the head of the lift plane (44) . A second set of cooling holes (56) has turbulators (62), starting at a greater distance from the platform than the turbulators of the first set and ending before the head of the lift plane, at a greater distance head than the turbulators of the first set of holes. A third set of holes (58) adjacent to the trailing edge (59), has smooth bores. The size, location, pattern and configuration of the cooling holes increases the life of parts during bulk creep and overall turbine efficiency.