某核电汽轮机大尺寸低压末级隔板结构强度研究  

Study on Mechanical Intensity of a Large-size LP Last Diaphragm of a Nuclear Steam Turbine

作　　者：郭鹏飞 GUO Pen-fei(Harbin Turbine Company Limited,Harbin 150046,China)

机构地区：[1]哈尔滨汽轮机厂有限责任公司,哈尔滨150046

出　　处：《汽轮机技术》2022年第4期251-253,共3页Turbine Technology

摘　　要：针对某核电汽轮机大尺寸低压末级隔板进行建模与强度、刚度和固有频率特性进行分析,该末级隔板采用空心导叶形式,对低压末级隔板运行状态的应力分布、变形情况和固有频率进行了计算,计算结果表明,该空心导叶形式的末级隔板强度余量充足,隔板挠度变形满足机组设计要求,固有频率有效避开工作频率,可为同类型机组的结构设计提供借鉴。Modeling and strength,stiffness and natural frequency characteristics of alarge-size LP last-stagediaphragm of a nuclear steam turbine which stationary hollow blade is adopted were made and analyzed.The calculation results of stress and deformation distribution under the operation condition and natural frequency of the diaphragm show that the strength safety margin is adequate,the maximum deflection and the natural frequency meet the design requirements.This study can provide the reference for similar structure design.

关 键 词：汽轮机 低压模块 末级隔板 空心导叶 

分 类 号：TK263.2[动力工程及工程热物理—动力机械及工程]