Lubricating oil effects on the bearing

Impact on the bearing lubricating oil 2018 - of learning 07 - 22 a energy storage units for the vertical shaft, three-phase, empty cold, have a reversible synchronous pump turbine of the damping winding motor. Structure for half umbrella, under the frame of oil tank of thrust bearing and the lower guide bearing sharing. Guide bearing using upper and lower guide bearing and water blocking, oil-immersed, self-lubricating, adjustable babbitt watts structure, for each bearing design: the guide to 0. 20± 0. 02 mm, under the guide of 0. 36± 0. 02 mm, water conductivity is 0. 29± 0. 02mm。 When installation, turning unit adopts the elastic way of turning, turning qualified to stop leakage ring after clearance and air gap to determine the center unit. Bearing lubrication oil usually use, 32 and 46, the higher the number, the greater the viscosity. Oil of high viscosity oil film thickness is thick, is advantageous for bearing, but the loss of bearing to a larger one. Lubricating oil emulsion may arise with long, can reduce viscosity, oil film thickness will be smaller. Thick emulsion viscosity is reduced, the oil film thinning. If the original design of minimum oil film thickness is not thick, so after emulsification, bearing a tile surface is the risk of scratches. Tachycardia in debugging test, the unit load rejection frequently, the influence of the impact of the outage, etc, will cause the guide shoe clearance changes. When units due to various reasons units bearing clearance greatens, making unit bow of the radius of the cyclotron also bigger, accordingly after radius is bigger, the rotor a arcuate etc of the centrifugal force will increase, the vibration and swing of generating units are also increases accordingly, increase lead to bearing bush bearing force and centrifugal force is bigger, lead to tile gap further expand, thus forming a vicious circle.