ATTACHMENT SYSTEM OF ENGINE SHAFT BY MEANS OF COUPLING NUT, INSTALLATION METHOD OF SHAFT, COMPRESSOR OF GAS-TURBINE ENGINE, DOUBLE-FLOW GAS-TURBINE ENGINE Russian patent published in 2011 - IPC F04D29/64 

FIELD: engines and pumps.

SUBSTANCE: group of inventions refers to attachment system of end of shaft (14) of gas-turbine engine installed inside sleeve (15) fixed on support bearing (3). The above system includes nut (16) and differs by the fact that nut (16) includes the first thread (16f₁) by means of which it is screwed into they above shaft (14), containing thread (14f), and the second thread (16f₂) by means of which it is screwed into the above sleeve (15). Preferably, pitch of thread (16f₁, 16f₂) of nut (16) has in one thread the opposite direction relative to the other thread in order to obtain coupling nut.

EFFECT: group of inventions allows providing the erection and removal of rotor shaft on the turbine rear wall.

8 cl, 8 dwg