GAS TURBINE Russian patent published in 2010 - IPC F01D5/08 

FIELD: machine building.

SUBSTANCE: cavity concentric to axis of machine is positioned axially between compressor and turbine and radially between case and rotor. A combustion chamber is installed in this cavity. Compressed in the compressor air is supplied into the cavity. To cool the turbine part of air from the compressor as cooling air is withdrawn from the cavity through at least one intake orifice on the rotor side. A protective element settling particles and preventing intrusion of particles suspended in outlet air of the compressor into the intake orifice is installed radially outside next to the intake orifice. The protective element corresponds to an apron facing the turbine; an end of the apron is tightly connected with the case on a turbine side, while the end facing the compressor is free.

EFFECT: raised efficiency of cleaning turbine cooling air due to particles settling with protective element; protective element hinders penetration of particles suspended in outlet air of compressor into intake orifice.

16 cl, 1 dwg