SYSTEM TO BALANCE ROTOR OF GAS TURBINE PLANT, ROTOR DISC AND STRUCTURAL UNIT COMPRISING SUCH SYSTEM AND GAS TURBINE PLANT

摘要

FIELD: machine building.;SUBSTANCE: system to balance a gas turbine plant rotor comprises a balancing grip, including several through holes. The system also comprises several balancing weights, every of which is firmly fixed on a balancing grip by means of the first and second screw/nut pairs, comprising the first screw and the second screw, which are installed in the first and second holes that directly follow each other. Each hole has the first and second side surfaces, which are located at one and other side from the screw included into the appropriate screw/nut pair. The second side surface is displaced relative to the first side surface in the first direction, and the first through hole is displaced relative to the second through hole in the second direction, which is opposite to the first one. The first screw rests against the first side surface of the first through hole and is located at the distance from the second side surface. The second screw rests against the second side surface of the second through hole and is located at the distance from the first side surface. Other subjects of the invention are a gas turbine plant rotor disc and a structural unit, comprising the above described balancing system, and also a gas turbine plant comprising a structural unit.;EFFECT: inventions make it possible to increase time of balancing grip usage and reduce risk of its damage.;14 cl, 5 dwg