GAS TURBINE EQUIPPED WITH SAFETY PLATE BETWEEN ROOT OF BLADE AND DISC Russian patent published in 2013 - IPC F01D5/30 

FIELD: machine building.

SUBSTANCE: gas turbine rotor includes cooled rotating blades located on the turbine disc, each of which has a blade root located in an axial slot for its fixation. Between the blade root and the slot bottom there located is a safety plate for protection of rotating blades against displacement along the slot, which is fixed on the turbine disc by means of bent edges. In order to supply the cooling agent, a supply channel enters the slot bottom for fixation of rotating blades; with that, each of the safety plates is equipped with the holes intended for passage of the cooling agent. Each root of the blade is equipped with two slots passing azimuthally relative to the turbine axis, and each of the safety plates is equipped with two keys located so that they are connected to the slots of the blade root with geometrical closure to ensure sealing. The other invention of the group refers to a steam-gas turbine plant equipped with the above described turbine rotor.

EFFECT: invention allows simplifying the turbine rotor structure and reducing its weight.

5 cl, 4 dwg