DAMPER FOR HIGH-SPEED VERTICAL ROTOR Russian patent published in 2010 - IPC F16F9/10 

FIELD: machine building.

SUBSTANCE: damper comprises case with damping fluid. The first damping element is arranged in the form of cylinder with alignment springs in upper part, hingedly resting in lower part of case. The second damping element is arranged in the form of cylinder of stepped shape, lower part of which has larger diametre and is placed into case cavity with damping fluid, and in upper part of lower diametre there is a sliding bearing, which embraces rotor axle with a gap. In the first damping element there is an internal cavity, open on top. The third damping element in the form of cylinder on flexible needle rigidly fixed in cavity base is placed in cavity to form radial damping gaps. Step-bearing for rotor support is rigidly fixed in upper part of the third damping element.

EFFECT: invention provides for reliable passage of bend critical frequencies by rotor and stable operation in supercritical area.

6 cl, 1 dwg