COOLED TURBINE OF GAS TURBINE ENGINE Russian patent published in 2003 - IPC

FIELD: mechanical engineering. SUBSTANCE: cooled turbine of gas turbine engine has outer housing with distributing manifold, disks, nozzle assembly, inner turbine housing with bearing housing coupled with outer housing by means of load-bearing spokes passing through vanes of nozzle assembly and interdisks space formed by disks and inner housing. Load-bearing spokes are made with inner channels communicated through inlets with distributing manifold and through outlet, with interdisk space of turbine. Inner channels are furnished with jets. Ratio of area of jet cross section to area of cross section of load-bearing spoke inner channels is within 0.03 and 0.8. Turbine is furnished with air ducts uniformly spaced over perimeter of turbine between load-bearing spokes passing through vanes of nozzle assembly and communicating through inlets with distributing manifold, and through outlets, with interdisk space of turbine. Air ducts are rigidly secured on outer housing being telescopically coupled with inner housing of turbine. Invention makes it possible to decrease thermal stresses in turbine support members at transient duties. EFFECT: increased reliability. 4 cl, 4 dwg