Stator casing ring for high pressure turbine of turboshaft engine, has ferrule surrounding sectors in ventilation chamber, continuously placed over periphery of ring, and fitted on one of hook shaped ends of circular partitions by hooping

摘要

The ring has a set of sectors (23) arranged in a circle and defining a gas flow passage (2) in a casing (6). The sectors have connection ends (4, 5) connected to hook shaped ends (11, 12) of a circular partition (9) and another circular partition of a main part of the casing, where the partitions delimit an annular ventilation chamber (16) for the sectors. A ferrule (24) surrounds the sectors in the ventilation chamber, and is provided with sector ventilation holes (15). The ferrule is continuously placed over the periphery of the ring and fitted, by hooping, on one of the hook shaped ends.