ROTARY MECHANISM FOR CENTRIFUGAL PLANT Russian patent published in 2002 - IPC

FIELD: mechanical engineering; centrifugal plants for conducting centrifugal technological processes giving rise to considerable dynamic unbalance of vertical rotor. SUBSTANCE: rotary mechanism includes working member 1, gas-static vertical bearing unit which consists of pivot 2 and step bearing 3 with hole 4 for supply of gas, gas supply system including at least one fan 5 connected with hole 4 of step bearing 3 and drive 6 with mechanical gear train 7. Working member 1 is connected with step bearing 2 forming rotor 8 with center of mass C_r. Bearing surfaces of step bearing 3 and pivot 2 are made in form of spherical belts. Fan 5 has specific speed criterion n_y lesser than 200. Mechanical gear train 7 of drive 6 consists of three shafts connected for intersection of axes; one shaft is telescopic. Rotor 8 is so constructed that zone of maximum operational unbalance of working member 1 is located in zone of minimum operational unbalance of rotor 8. Zone of maximum operational unbalance is located at distance from center of mass C_r of rotor 8 determined by the following relationship: where H is distance between center of mass of rotor and plane of location of zone of maximum operational unbalance of working member, m; I₀ is centroidal moment of inertia of rotor kg.sq.m; I_eg is equator moment of inertia of rotor, kg. sq. cm: m is mass of maximum operational unbalance of working member, kg; R_m is distance between center of mass of maximum operational unbalance of working member and axis of rotor, m; M is mass of rotor, kg. EFFECT: optimization of functional characteristics of gas-static bearing unit, gas supply system and drive. 4 cl, 2 dwg