FLUID MEDIUM FLOW UNIT, IN PARTICULAR, TURBINE WITH AXIALLY PASSING HEATED GAS FLOW Russian patent published in 2015 - IPC F01D5/08 

FIELD: machine building.

SUBSTANCE: unit with the fluid medium flow, in particular, a gas turbine with axially passing heated gas flow, is designed with rows of rotor vanes from the rotor side and rows of the guide vanes from the housing side located respectively axially between consecutive rows of the rotor vanes and also with the rotor shaft surrounded with heat-shielding elements and elements of the basis of the rotor vanes. In the area of the first radial plane of the rotor shaft, inside heat-shielding elements and elements of the base the first cooling air chambers are located which are interconnected to each other and with the cooling air source. In the area of the external second radial plane of the rotor shaft, inside the base plates, between the rotor vanes and their base elements the additional cooling air chambers are located which can be blown by heated gas. Additional cooling air chambers can be blown only from their end faces located upstream the heated air flow.

EFFECT: invention is aimed at optimisation of the cooling air flow and at increase of efficiency by elimination of uncontrollable intake of the cooling air into the heated gas flow.

7 cl, 4 dwg