某微型燃机浮环厚度变化对轴承稳定性影响的试验研究  

Experimental Study on the Effect of Thickness Variation of Floating Ring on the Stability of Floating Bearing in Micro Gas Turbine Application

作　　者：董春伟[1] 付忠广[1] 杨金福[2] 赵宏亮[1] 邓转志[1] 

机构地区：[1]华北电力大学,北京102206 [2]中科院工程热物理研究所,北京100080

出　　处：《燃气涡轮试验与研究》2009年第1期27-31,共5页Gas Turbine Experiment and Research

摘　　要：根据浮环减薄前后两次试验结果的对比分析,进一步研究了浮环厚度变化对浮环轴承涡动及稳定性的影响。浮环轴承减薄会引起油膜涡动力的变化。升速过程,减薄前浮环轴承试验的稳定性要好些;高速稳态运行过程,其稳定性差别不大;降速过程,减薄前浮环轴承试验的稳定性要差些。两试验还证实,浮环内、外油膜半速涡动现象的涡动比分别接近0.5和0.3。Based on two experiments on floating ring bearing before and after floating ring thickness reduction, the effect of thickness variation of floating ring on whirl and stability was studied. The variance of floating ring transformation thickness caused changes in the force of oil whirl. In the process of speed up, the stability of the thick floating bearing was better than the thin one; in the process of high speed steady-state, the stability was similar. In the process of deceleration, the stability of the thick floating bearing is worse than the thin one. The experiments showed that the whirl ratios of outer and inner oil film in floating ring bearings approached respectively 0.5 and 0.3 in squeezing vibration.

关 键 词：浮环轴承 稳定性 试验研究 

分 类 号：TH117[机械工程—机械设计及理论]