FIELD: gas-turbine engines.
SUBSTANCE: proposed nozzle box of turbine of gas-turbine engine has nozzle vanes with trunnions and ring projections. Inner ring with ring groove is fixed on inner flanges of nozzle vanes in which vane ring projection is fitted. One of flanges of inner ring is furnished with axially extended ring bead with radial slot in which trunnion of vane nozzle is arranged. Difference between distance from axis of bolt of fastening flange of inner ring and inner surface of ring projection of nozzle vane and distance between axis of bolt of fastening flange of inner ring and outer machined surface of nozzle vane trunnion is greater than zero.
EFFECT: improved reliability and efficiency of gas-turbine engine owing to provision of high accuracy of manufacture of aligning elements of nozzle box parts.
2 cl, 4 dwg
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