MAIN OIL PUMP AND STEAM TURBINE SPEED GOVERNOR DRIVE UNIT Russian patent published in 1997 - IPC

FIELD: lubricating system equipment of steam turbines. SUBSTANCE: drive unit has hollow drive shaft of oil pump whose one end is connected with shaft of turbine rotor by means of torsion bar running inside it and other end is connected with shaft of speed governor by means of rigid and tooth-type couplings. Hollow drive shaft of oil pump is linked with torsion bar through intermediate hollow shaft possessing transversal elasticity and passing inside hollow drive shaft of oil pump. Connection of these shafts and torsion bar with shaft of turbine rotor is effected by means of rigid couplings. Connection of drive shaft of oil pump with shaft of speed governor is effected by at least one tooth-type coupling; last of above-mentioned shafts is mounted in radial thrust bearing. EFFECT: enhanced reliability. 1 dwg