减少高速旋转的叶轮机械轴承中的热油流动

Reduction of Hot Oil Carry-over in High Speed Running Turbo Application Bearings

Tilting pad journal bearings are used in turbomachinery like turbo compressors,turbo gears,gas turbines and steam turbines.By increasing the power density,the applied loads and velocities have been increased simultaneously over the last decades.To overcome conservative operation limits,it is helpful to reduce the oil film temperatures by certain design modifications.Especially the hot oil carry-over may be reduced when design measures are taken to prevent the majority of the hot oil coming out of one pad and reaching the next pad.Beside that,this measure fresh oil should be mixed with hot oil as little as possible.The article is based on the paper“Reduction of Hot Oil Carry Over in High Speed RunningTurboApplication Bearings”presented at the 12thEDF/PrimeWorkshop,Futuroscope[1].