基于Zencrack的汽轮机叶片蠕变断裂分析方法研究  

Research on Creep Fracture Analysis of Steam Turbine Blade Based on Zencrack

作　　者：苟小平[1] 李音[1] 范志飞[1] 陈涛[1] 谢贞军 GOU Xiaoping;LI Yin;FAN Zhifei;CHEN Tao;XIE Zhenjun(Dongfang Turbine Co.,Ltd.,Deyang Sichuan,618000)

机构地区：[1]东方电气集团东方汽轮机有限公司,四川德阳618000

出　　处：《东方汽轮机》2023年第1期15-17,29,共4页Dongfang Turbine

摘　　要：汽轮机高压级次的动叶片承受着高温和离心力的双重作用,叶片的工作环境及其恶劣。叶片在高温环境下长时间工作会产生蠕变,研究叶片的蠕变断裂对于分析和预防叶片事故具有重要意义。文章利用Zencrack模拟了带有初始裂纹的汽轮机叶片在高温和离心力作用下裂纹的扩展问题,并给出了裂纹的扩展方式和最终的形貌。The rotor blade of high pressure stage of steam turbine is subjected to high temperature and centrifugal force.The working condition of rotor blade is very bad.The blade will creep if it works at high temperature for a long time.It is very important to study the creep fracture of blade for analyzing and preventing blade accident.In this paper,the crack growth of turbine blade with initial crack under high temperature and centrifugal force is simulated by Zencrack.The propagation mode and final morphology of the crack are given.

关 键 词：动叶片 Zencrack 蠕变 断裂 裂纹 

分 类 号：TK263[动力工程及工程热物理—动力机械及工程]