COOLED TURBINE OF GAS-TURBINE ENGINE Russian patent published in 2009 - IPC F01D5/00 

FIELD: engines and pumps.

SUBSTANCE: invention is related to the field of gas-turbine propulsion engineering, namely to cooled turbines of gas-turbine engines. Cooled turbine comprises impeller disc with protrusions connected to protrusions of additional disc by means of pins installed in holes of these protrusions. Additional disc forms vaneless diffuser with disc, inlet of which is communicated to outlet of twist nozzle block, and outlet - to channels for supply of cooling air to working blades installed in discs under blades. Additional disc is arranged with detachable cover connected to disc above channels by clutch of bayonet type, when one part with slot is placed on another part with appropriate protrusion and is turned so that protrusion stops part. Clutch part of working blades is arranged with additional protrusions, which are installed in grooves produced as a result of bayonet joint. Annular groove is arranged in cover, in which sealing element is installed, being arranged, for instance, in the form of wires. Invention makes it possible to provide mutual alignment of these discs relative to each other.

EFFECT: increased reliability of engine operation.

2 cl, 2 dwg