双跨转子系统的临界转速影响因素分析  

Analysis of Critical Speed of Two-span Rotor System

作　　者：潘宏刚 李根稼 郭宝仁 孟昭发 高宇 PAN Hong-gang;LI Gen-jia;GUO Bao-ren;MENG Zhao-fa;GAO-Yu(Shenyang School of Energy and Power,Shenyang Institute of Engineering,Shenyang 110136,China;Northeast Branch of Huadian Electric Power Research Institute,Shenyang 110180,China;Shenyang Rizhao Electromechanical Equipment Sales Co.,Ltd.,Shenyang 110020,China)

机构地区：[1]沈阳工程学院能源与动力学院,沈阳110136 [2]华电电力科学研究院东北分院,沈阳110180 [3]沈阳日昭机电设备销售有限公司,沈阳110020

出　　处：《汽轮机技术》2023年第2期115-118,135,共5页Turbine Technology

基　　金：中国博士后科学基金(2019M661125);辽宁省教育厅科学研究经费项目(JL-2003)。

摘　　要：建立双跨转子系统模型,利用Ansys软件进行转子临界转速计算,并与理论计算结果比较,以保证结果的正确性。用有限元软件分析研究了支承变化、轮盘变化以及联轴器变化3种影响因素对双跨转子系统临界转速的影响。结果分析表明:在转子上增大支承刚度会增大双跨转子的临界转速,而在支承位置的偏移中,两段转子的临界转速表现出不同的变化趋势。增大转子上的轮盘质量,双跨转子的临界转速减小,偏移转子上的轮盘位置,双跨转子的临界转速增大。增大联轴器的刚度,双跨转子的临界转速增大,联轴器的位置处于中心时,临界转速最大,向两边偏移,临界转速减小。为汽轮机转子系统设计和处理汽轮机运行过程中由于结构数据变化引起临界转速改变提供参考。The double-span rotor system model is built by using the Ansys software and compared with the theoretical results to ensure the correctness of the results.The influence of support change,wheel change and coupling change on the critical speed of the double rotor system is studied.The results show that increasing the support stiffness on the rotor increases the critical speed of the double rotor.Increase the wheel mass on the rotor,reduce the critical speed of the double span rotor,shift the wheel position on the rotor,and increase the critical speed of the double span rotor.Increase the stiffness of the coupling,the critical speed of the double-span rotor increases,when the position of the coupling is in the center,the critical speed is the maximum,offset to both sides,and the critical speed decreases.It is a reference for the design and treatment of the steam turbine rotor system.

关 键 词：有限元 联轴器 轮盘变化 支承变化 临界转速 

分 类 号：TK262[动力工程及工程热物理—动力机械及工程]