汽轮机蜗壳进汽低压内缸与横置静叶有限元联合分析及安全性评估  

FEM Invesigantion and Security Evaluation of Steam Turbine LP Inner Casing with Inlet Spiral and RADAX-Stage Stator Blades

作　　者：刘洋[1] 马义良[1] 李宇峰[1] 翁振宇[1] 翟彦恺 梁天赋 LIU Yang;MA Yi-liang;LI Yu-feng;WENG Zhen-yu;ZHAI Yan-kai;LIANG Tian-fu(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6期413-415,444,共4页Turbine Technology

摘　　要：基于有限元方法分析了汽轮机横置静叶-低压内缸结构的强度和安全性。为使仿真计算结果更为精确,引入横置静叶-低压内缸联合模型进行计算。分析中包含热-流-固耦合分析,并考虑缸体结构塑变影响,建立了针对低压内缸的准确、高效的横置静叶安全性分析方法,为后续横置静叶-低压内缸安全性评估提供了有益的参考。A structural security investigation on RADAX-stage stator blades coupled with a LP inner casing has been exerted based on FEM.In order to achieve high precision and reliability,a compound model,combining RADAX-stage stator blades and the inner casing,has been introduced.An efficient and effective security assessment methodology has been established in terms of thermo-fluid-structural coupling and plastic equivalent strain,which can provide practical references to the evaluation on similar turbine components.

关 键 词：横置静叶 低压内缸 弹塑性 安全性 有限元 

分 类 号：TK263.1[动力工程及工程热物理—动力机械及工程] TK263.3