基于ANSYS Workbench的水轮机桨叶操作油管疲劳寿命分析  

Fatigue Life Analysis of Blade Operating Oil Pipe of Hydraulic Turbine Based on ANSYS Workbench

作　　者：首建威 刘小云 杨峰雄 罗先洪 刘忠[3] 张乐 SHOU Jianwei;LIU Xiaoyun;YANG Fengxiong;LUO Xianhong;LIU Zhong;ZHANG Le(Guazhi Hydropower Plant,Guizhou Qingshuijiang Hydropower Co.,Ltd.,Jinping 556700,China;Intelligent Hydropower Engineering Technology Research Center,Changsha 410118,China;College of Energy and Power Engineering,Changsha University of Science&Technology,Changsha 410114,China)

机构地区：[1]贵州清水江水电有限公司,挂治水力发电厂,贵州锦屏556700 [2]湖南省水电智慧化工程技术研究中心,湖南长沙410118 [3]长沙理工大学,能源与动力工程学院,湖南长沙410114

出　　处：《微型电脑应用》2024年第11期39-42,共4页Microcomputer Applications

基　　金：国家电力投资集团五凌电力有限公司科技项目(WLKJ-C-2021-SD22)。

摘　　要：桨叶操作油管作为转桨式水轮机桨叶开启和关闭过程中传递压力油的重要部件,运行过程中易受到静应力和交变应力的联合作用产生疲劳裂纹,威胁机组的安全稳定运行。基于ANSYS Workbench软件对轴流转桨式水轮机桨叶操作油管在静载荷作用下的结构强度和交变载荷作用下的疲劳寿命进行数值模拟,对比分析2种不同材料的桨叶操作油管在额定工况下的表现。结果表明:在静载荷作用下,2种材料的操作油管均能满足安全运行的要求;在交变载荷作用下,304不锈钢操作油管相比20号钢操作油管具有更好的抗疲劳性能。As an important part of pressure oil transmission during the opening and closing process of Kaplan turbine blades,the blade operating oil pipe bears the forces of static stress and alternating stress,and may be prone to fatigue cracks which threaten the safe and stable operation of the unit.Based on ANSYS Workbench software,the structural strength and fatigue life of the blade operating oil pipe in Kaplan turbine are numerically simulated under static load and alternating load.The performances of the blade operating oil pipe made of two different materials are compared and analyzed under normal operation condition.Results show that the two blade operating oil pipes meet the requirements of safe operation under static load,and the 304 stainless steel operating oil pipe has better fatigue resistance than the 20#under alternating load.

关 键 词：轴流转桨式水轮机 操作油管 ANSYS Workbench 疲劳寿命 

分 类 号：TK730.2[交通运输工程—轮机工程]