ROTOR ASSEMBLY, TURBINE ENGINE AND METHOD FOR ASSEMBLING ROTOR ASSEMBLY Russian patent published in 2016 - IPC F01D5/30 

FIELD: engines.

SUBSTANCE: rotor assembly of turbine engine comprises rotor disc, turbine blade and tail unit. Rotor disc has inner surface defining a groove of a groove lock including a recessed groove defined in rotary disc. Turbine blade is attached to rotor disc and has an aerodynamic part, extending outward from protrusion of groove lock inserted into groove of groove lock. From protrusion of groove lock extends a flange, and recessed groove has a size to accommodate flange. Tail unit is formed by flange arranged in said recessed groove defined in rotary disc, and providing minimisation rotation of turbine blade relative to rotor disc. Tail unit has a groove made radially to outer surface of lower section of protrusion of groove lock, and a radial flange connected to rotor disc and extending outward from inner surface of rotor disc to protrusion of groove lock for arrangement in groove. Said groove has a radial height, such that when radial flange is inserted into groove between outer surface of protrusion of groove lock and inner surface of rotor disc, a gap is formed. Another invention relates to a turbine engine comprising generator, turbine connected with generator, and said rotor assembly, extending through turbine. Assembling of said rotor assembly of turbine engine comprises connecting said turbine blade to said rotor disc with provision of minimisation of rotation of turbine blade relative to rotor disc.

EFFECT: group of inventions reduces wear between groove of disc and protrusion of groove lock of blade and prolongs service life.

19 cl, 7 dwg