摘要
以三峡工程为背景 ,建立了水轮发电机组主轴系统动力摆度计算的非线性模型 ,提出了主轴系统共振频率和共振转速的计算方法。该方法充分考虑了主轴支承边界条件和有关载荷方面的特点 ,特别是考虑了由于主轴的垂直安装引起的油膜力的非线性。计算了一台 2 40 MW的水轮发电机组的主轴摆度 。
Against the background of Shanxia project,this paper establishes a nonlinear model for calculating the radial vibration of shaft system of hydro-generator unit,and gives the calculating method for resonant frequency and resonant rotating speed of spindle.This method takes fully into account the characteristics of supports and loads,deals especially with the nonlinearity of oil film force of guide bearing caused by vertical arrangement of spindle.As an example,the model and the method are applied to treat the nonlinear problem for shaft of a hydro-generator unit with 240MW,and the comparison between the computer values and the field measured values of radial vibration shows that the method is satisfactory.
出处
《中国机械工程》
EI
CAS
CSCD
北大核心
2001年第8期939-942,共4页
China Mechanical Engineering
基金
国家自然科学基金资助项目 (5 949370 0 )
机械工业技术发展基金资助项目 (94JZ0 0 4)
