某汽轮机低压缸次末级叶片安全性分析  

Safety Analysis on Low-Pressure Cylinder L-1 Stage Blades of a Steam Turbine

作　　者：纪连举 包伟伟[2] 宫健 刘文达 段金鹏 JI Lianju;BAO Weiwei;GONG Jian;LIU Wenda;DUAN Jinpeng(SPIC Jilin Electric Power Co.,Ltd.,Changchun 130006,China;Harbin Turbine Co.,Ltd.,Harbin 150046,China;SPIC Changchun Power Co.,Ltd.,Changchun 130600,China)

机构地区：[1]国家电投集团吉林电力股份有限公司,长春130006 [2]哈尔滨汽轮机厂有限责任公司,哈尔滨150049 [3]国家电投集团吉林电力股份有限公司长春热电分公司,长春130600

出　　处：《热力透平》2021年第1期39-43,72,共6页Thermal Turbine

摘　　要：火电灵活性技术的发展使大型火电汽轮机的运行工况更为复杂,这对汽轮机叶片的安全性提出了更高要求。基于有限元分析方法,对某汽轮机低压缸次末级叶片的安全性进行了分析计算,得到了叶片的静应力分布、振动避开率以及动应力分布等相关数据,表明了次末级叶片安全性满足强度设计要求。研究成果可为叶片的安全性判定以及机组的安全稳定运行提供理论支撑。The development of thermal power flexibility technology makes the operation condition of large-scale thermal power turbine more complex,so higher requirements for the safety of turbine blades are provided.Based on the finite element analysis and calculation method,the safety of low-pressure cylinder L-1 stage blades of a steam turbine was analysed and calculated.The related data of the stress distribution,vibration avoidance rate and dynamic stress distribution were then obtained,indicating that the strength and safety of low-pressure cylinder L-1 stage blades were satisfying.The research result can provide theoretical support for the operation safety and stability of units.

关 键 词：汽轮机 叶片 有限元方法 动应力 安全性 

分 类 号：TK263.3[动力工程及工程热物理—动力机械及工程]