混流式水轮机转轮叶片裂纹长度与运行时间关系的研究  

A STUDY ON THE RELATIONSHIP BETWEEN CRACKED LENGTH OF RUNNER BLADE OF FRANCIS TURBINE AND OPERATING TIME

作　　者：王蒲全[1] 崔广椿[2] 

机构地区：[1]西安高压电器研究所 [2]东北大学

出　　处：《机械强度》1993年第2期56-59,共4页Journal of Mechanical Strength

摘　　要：结合混流式水轮机随机出力的分布函数和转轮叶片最大主应力的平均应力与出力的关系式,运用断裂力学的方法推导出叶片裂纹长度和运行时间的关系式,为水轮机叶片的寿命估算研究提供一条新途径。A new way was used to estimate the life of runner blade.With the aid of distribution function of random load of Francis turbine and the relative formula between the average stress of the maximum main stress of runner blade and output of Francis turbine,it was obtained the relative formula between cracked length of runner blade and operating time by cracked dynamics approach.

关 键 词：疲劳裂纹 水轮机 转轮 叶片 寿命 

分 类 号：TK733.1[交通运输工程—轮机工程]