关键词: 推力轴承, 油雾防治, 水轮发电机, 葛洲坝水电站

Abstract: The phenomena and hazards of the oil mist diffusing of the thrust bearing in Gezhouba Hydropower Station are first introduced. Then the causes of the oil mist generation of the generator thrust bearing are analyzed. On the basis of summarizing the existing defects of the oil mist absorber, possible solutions to the oil mist problem are discussed. A new idea for the prevention and control of the oil mist of thrust bearing is put forward, i.e, firstly, improving the tightness oil tank to seal the oil mist in oil tank as far as possible; then absorbing the oil mist by oil mist absorber, at the same time, aerating the low pressure area to reduce oil mist diffusion due to pressure imbalance. The result can provide a reference for oil mist control of generator thrust bearing of Gezhouba hydropower station as well as the same type units.

Key words: thrust bearing, oil mist prevention and control, hydro-generator, Gezhouba Hydropower Station