| 摘要 |
A cooled turbine shroud includes an arcuate flow path surface (32) adapted to surround a row of rotating turbine blades, and an opposed interior surface (34); a forward overhang (36) defining an axially-facing leading edge (38), an outwardly-extending forward wall (52) and an outwardly-extending aft wall (54); opposed first and second sidewalls (44, 46), wherein the forward and aft walls (52, 54) and the sidewalls (44, 46) define an open shroud plenum (56); at least one leading edge; cooling hole (64) extending from the shroud plenum (56) to the leading edge (64); and at least one sidewall cooling hole (70, 76) extending from the plenum (56) to one of the sidewall (44, 46). The flow path surface (32) is free of cooling holes and may include a protective coating applied thereto. |
