轴向间隙对高速双涡轮转子稳定性的试验

发布时间：2018-06-26 17:27

  本文选题：轴向间隙 + 高速双涡轮膨胀发电机　； 参考：《航空动力学报》2017年05期

【摘要】：通过轴向间隙静态试验判断轴承供气压力不同时的轴向间隙,采用时间三维谱图、轴心轨迹、频谱分析等非线性振动测试及分析方法,研究了轴向间隙对高速涡轮转子稳定性的影响.结果表明:当左右两侧轴向间隙不相等时,在升速过程中会出现气膜振荡和半速涡动现象;当左右两侧轴向间隙相等时,气膜振荡和半速涡动消失,能提高轴承转子系统的稳定性.
[Abstract]:The axial clearance with different gas supply pressure is determined by static test of axial clearance. The nonlinear vibration measurement and analysis methods such as time 3D spectrum, axis track and spectrum analysis are used. The influence of axial clearance on the stability of high speed turbine rotor is studied. The results show that the film oscillation and half velocity vortex will occur in the process of increasing the velocity when the axial gap between the two sides is not equal, and the film oscillation and the half speed vortex will disappear when the axial gap between the two sides is equal. It can improve the stability of bearing rotor system.
【作者单位】： 华北电力大学能源动力与机械工程学院;中国科学院工程热物理研究所;
【基金】：国家科技支撑计划项目(2012BAA11B02)
【分类号】：TM31
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本文编号：2070814