ASSEMBLY OF JOINT BETWEEN GAS TURBINE ENGINE COMPRESSOR AND TURBINE ROTORS Russian patent published in 2010 - IPC F02C7/36 F01D5/02 

FIELD: engines and pumps.

SUBSTANCE: assembly of joint between gas turbine engine compressor and turbine rotors comprises the shafts of high- and low-pressure compressors, low-pressure turbine shaft, locking tube, intermediate shaft fitted on low-pressure compressor shaft and intershaft ball bearing. Low-pressure turbine shaft is splined radially with low-pressure compressor shaft and coupled axially with it via coupling sleeve. Locking tube is jointed with said coupling sleeve via extra splined joint. Outer race of intershaft ball bearing is fitted in high-pressure compressor rotor journal inner surface while its outer race is jointed to intermediate shaft outer surface. There is an annular groove made in low-pressure compressor shaft splines to receive thrust sleeve locked axially and provided with ledges arranged on its faces. Locking sleeve with grooves is splined on low-pressure compressor shaft. Thrust sleeve ledges enter the locking sleeve grooves and accommodate additional sleeve arranged along its edges and splined thereon. One end of additional sleeve stays in contact with intermediate shaft and another one is furnished with the ledge staying in contact with locking sleeve end face.

EFFECT: reduced deviation of compressor and low-pressure turbine shafts and longer life of bearings.

4 cl, 2 dwg