TURBINE OF GAS TURBINE ENGINE Russian patent published in 2013 - IPC F01D9/06 F01D25/24 

FIELD: engines and pumps.

SUBSTANCE: turbine of gas turbine engine includes an annular inlet channel, the inner housing of which is formed with a rear cover plate and an inner conical shell telescopically installed on radial projections of flanges of nozzle vanes of the first stage. Radial projections of flanges of nozzle vanes of the first stage are rectangular in cross section and contact with their side walls to axial projections of conical shell and rear cover plate, which are trapezoidal in cross section. Axial projections of the shell are located on outer side of axial projections of the rear cover plate. Conical shell is fixed in axial direction relative to the cover plate with its front flange by means of annular radial connection of male-female type. Front flange is split and consists of sectors, and bolted connection of the front flange with the cover plate is provided with an annular groove at the joint of flange and cover plate around the bolt shank.

EFFECT: invention allows improving turbine reliability.

2 cl, 5 dwg