HIGH-TEMPERATURE TURBINE STATOR Russian patent published in 2015 - IPC F01D25/14 F01D25/24 

FIELD: machine building.

SUBSTANCE: stator of the high-temperature turbine comprises a nozzle blade placed in the intermediate housing, and sectors of the split ring designed with an internal air cavity and mounted downstream the gas flow. On the external side of each sector of the split ring a hollow branch pipe is mounted, with its front axial cylindrical tailpiece installed in the intermediate housing. The internal cavity of the branch pipe from the upstream is connected to the intermediate case air cavity, and from the downstream - with the internal cavity of the split ring sector. The front tailpiece of the split ring sector is placed in the nozzle blade using the mortise-and-tenon joint with radial clearances, and the branch pipe is placed on the centreline of the split ring sector.

EFFECT: invention allows to improve reliability of the high-temperature turbine stator, due to exception of stray outflow of cooling air supplied for cooling of the split ring sectors.

5 dwg