Rotor for turbomachines

摘要

A rotor for turbomachines having a plurality of blades, and a damping member housed inside a chamber respectively arranged between each pair of adjacent blades of the rotor. The damping member is pushed, in use, by the centrifugal force against two surfaces, each of which is carried by a respective blade, which limit the respective chamber in a radially outward direction. The damping member is cup-shaped and provided with a base wall facing the two surfaces of the chamber and has three support bosses provided on one surface so that at least one of the three will contact one of the two surfaces and at least one other will contact the other of the two surfaces.

主权项

1. A rotor for turbomachines (A), the rotor comprising a central body having an axis and suitable to rotate about the axis itself; at least one row of blades surrounding the central body and which rotate with the central body about the axis; and a damping system to reduce any vibratory motion of the blades; the blades of each pair of adjacent blades defining, between them, a housing chamber containing part of said damping system; and each chamber being limited, in a radially outward direction, by a relative closing wall comprising two portions separated by an air gap and belonging one to one and the other to the other of the blades of the relative pair of adjacent blades; wherein the damping system comprises a cup shaped damping member mounted floatingly, at least in a radial direction, inside each chamber and having a substantially flat upper surface, and three bosses projecting radially outwards from the substantially flat upper surface; at least a first of the three bosses facing one of the two portions of the closing wall, and at least a second of the three bosses facing the other of the two portions of the closing wall.