ROTOR ASSEMBLY FOR A GAS TURBINE AND A GAS TURBINE COMPRISING SUCH A ROTOR ASSEMBLY Russian patent published in 2019 - IPC F01D11/00 F02C7/28 

FIELD: turbines or turbomachines.

SUBSTANCE: gas turbine rotor assembly comprises rotor housing, locking plate and sealing wire. Rotor casing has a Christmas tree type section configured to accommodate the corresponding fur-tree type of the blade, and a circumferential groove made near the fur-tree type of the rotor. Locking plate is connected with a section of Christmas tree type of rotor and contains lower section of locking plate inserted into circumferential groove. Groove forms a side wall facing the lower section of the stop plate. Sealing wire is located inside circumferential groove. Side wall and locking plate form a converging channel, so that during operation sealing wire is moved by centrifugal forces upwards until it contacts with lower section of locking plate and side wall. Lower section of the stop plate has a pointed shape and comprises an end wall facing the side wall, which is inclined to form an acute angle with the radial direction of the rotor housing. Side wall is made inclined, forming an acute angle with radial direction of rotor housing, which is in range 0<α₂<arctan(μ_f2), where μ_f2 is coefficient of friction related to side wall. Invention also relates to a gas turbine comprising the above rotor assembly.

EFFECT: invention allows reducing leakage of hot fluid medium to the tail of the rotor blade of the gas turbine.

10 cl, 7 dwg