| 摘要 |
The invention relates to an assembly for a turbine (22) of a turbine engine, comprising a casing (32) and an annular duct (34) surrounding the casing, which can be connected to means for supplying cooling air, and having a radially inner annular wall (36) provided with openings (40) arranged opposite the casing in order to cool same by the impact of cooling-air jets. The casing has a plurality of axial grooves (42) comprising first grooves (42A) and second grooves (42B) arranged in alternation, and the openings are distributed in a plurality of annular rows in which any pair of consecutive annular rows is such that the openings (40A) of one of the annular rows of the pair are centred relative to the first grooves (42A) while the openings (40B) of the other annular row of the pair are centred relative to the second grooves (42B). |
