DEVICE LOCKING ROTOR BLADE SHANK Russian patent published in 2016 - IPC F01D5/30 

FIELD: machine building.

SUBSTANCE: invention relates to power-plant engineering and can be used in rotors of the turbine machines. The device locking rotor blade shank in slot of the rotor wheel contains a ring sector, installed perpendicular to axis of the turbine machine in groove of the rotor wheel. With the ring sector at least one lock key is rigidly connected for radial holding of the blade shank in the wheel slot. The key is located at right angle to the ring sector and parallel to its axis. To lock the axial movement of the blade shank the slot has at least one lock tooth installed radially relatively to the axis of the ring sector. In the ring sector the ventilation device are made to remove air flow circulating between the bottom of the slot in the rotor wheel and lock key.

EFFECT: as result lock of the rotor blade shank without means for axial lock engagement is ensured, time for device installation in rotor of the turbine machine is reduced.

9 cl, 6 dwg