GAS TURBINE PLANT ROTOR BALANCING SYSTEM; ROTOR DISC AND STRUCTURAL ASSEMBLY, WHICH CONTAIN SUCH SYSTEM, AND GAS TURBINE PLANT Russian patent published in 2012 - IPC F01D5/02 

FIELD: machine building.

SUBSTANCE: gas turbine plant rotor balancing system includes balancing grip including an annular wall. Annular wall of the grip is restricted in the first radial direction with mating zone after which multiple through holes pass in the first radial direction towards open radial extreme end of the grip. Each through hole passing in the second direction opposite to the first one includes radial top the point of which is located in that mating zone. In addition, balancing system includes several balancing weights which are rigidly fixed on balancing grip at least by means of one screw/nut pair passed through one of the above holes. One of the elements, nut, screw head is borne against the first surface of balancing grip, and balancing weight is borne against the second surface of balancing grip, which is opposite to the first one. For each through hole the balancing grip includes the first groove on its first surface, through which radial top passes; at that, the first groove is located on both sides from the mating zone and does not contact the nut or screw head. The other surface of balancing grip includes the second groove through which radial top passes; at that, the second groove is located on both sides from the mating zone and does not contact the balancing weight. The other invention objects are gas turbine plant rotor disc and structural assembly, which contain the above described balancing system, as well as gas turbine plant containing the structural assembly.

EFFECT: inventions allow increasing durability and improving reliability of the balancing grip.

10 cl, 5 dwg