大容量汽轮机不同阀序工况下调节级叶片的动应力数值分析  

Numerical Analysis of the Governing Stage Dynamic Stress of a Large Capacity Turbine under Different Valve Operating Conditions

作　　者：谷伟伟[1] 常东锋[1] 江浩[1] 徐自力[2] 

机构地区：[1]西安热工研究院有限公司,西安710032 [2]西安交通大学,西安710049

出　　处：《汽轮机技术》2016年第1期20-22,共3页Turbine Technology

基　　金：西安热工研究院科技项目(ZC-15-TYK02)

摘　　要：以某600MW汽轮机调节级叶片为研究对象,分析了复合阀和顺序阀两种配汽方式3种工况下调节级叶片的气动载荷。考虑部分进汽引起的阶跃激励和Kick效应的影响,采用三维有限元法数值分析了3种工况下调节级叶片的瞬态动力响应和动应力,进而对阀序改造后调节级叶片的安全可靠性进行了分析。Taking the governing stage of a 600MW steam turbine as the research object, the aerodynamic loads under the three conditions of the composite valve mode and sequence valve mode are analyzed. Considering the effect of the step excitation and Kick effect, the numerical analysis of the transient dynamic response and dynamic stress of the governing stage under the three conditions are accomplished by the finite element method, and then the safety and reliability of the governing stage are analyzed.

关 键 词：调节级 复合阀 顺序阀 动应力 

分 类 号：TK263[动力工程及工程热物理—动力机械及工程]