SHAFT END FIXING SYSTEM, COMPRESSOR SHAFT ERECTION METHOD, GAS TURBINE ENGINE COMPRESSOR AND GAS TURBINE ENGINE Russian patent published in 2011 - IPC F02C7/36 F01D5/02 F04D29/32 

FIELD: engines and pumps.

SUBSTANCE: shaft end fixing system of gas turbine engine inside conical wheel supported with bearing includes nut screwed into the end inside conical wheel and connected by means of locking ring made in the form of a ring with a slot to shaft on the other end. Nut contains external recess with depth enough to insert the locking ring in screwed up state, and has the surface forming axial stop for locking ring. Locking ring is located as to some part of its height in the recess made on shaft when locking ring is borne against the above surface forming a stop. One more invention of the group refers to erection method of HP compressor shaft of two-shaft gas turbine engine in the bearing, according to which bearings is heated, nut of the above shaft fixing system is mounted, and then, nut is screwed up. The other inventions refer to gas turbine engine compressor and to gas turbine engine including the above shaft fixing system.

EFFECT: inventions allow simplifying assembly and disassembly of fixation point owing to providing the access to it from rear part of engine.

7 cl, 8 dwg