汽轮发电机组轴承载荷应变识别法及试验研究  

Turbine Generator Bearing Load Identification Method and Test Using the Measured Strain Value

作　　者：李燕勇 张世东[2] 杨建刚[2] 董川 彭斌 

机构地区：[1]云南省电力试验研究院,昆明650217 [2]东南大学火电机组振动国家工程研究中心,南京210096

出　　处：《汽轮机技术》2013年第2期115-117,共3页Turbine Technology

摘　　要：轴承载荷直接影响轴承工作特性,并进而影响大型汽轮发电机组的安全稳定运行。转子-轴承系统是一个静不定结构,轴承所承受的载荷无法直接求出。提出基于转轴应变信号的轴承载荷识别方法。通过在轴承两侧3个截面上布置应变片,测量转轴低速旋转过程中应变值变化情况,进而识别轴承载荷。在转子-轴承试验台上开展了相关实验,验证了本方法的可行性。Load has large influence on bearing dynamics. It influences the safe and reliable operation of large turbo generator unit. Rotor-bearing system of turbine is an undetermined structure. Bearing load can not be calculated directly. The paper presents a bearing load identification method based on the measured shaft dynamic strain signal during low speed rotation. Three shaft sections near the bearing is used to measure shaft bend strain value. Test was done on rotor-bearing rig. The method was verified.

关 键 词：轴承 转子 应变 载荷 

分 类 号：TK267[动力工程及工程热物理—动力机械及工程]