| 大型混流式水轮机转轮疲劳设计方法的研究 |
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| 引用本文： | 黄雨华,王德俊,姜涛,米毓德,钟苏. 大型混流式水轮机转轮疲劳设计方法的研究[J]. 机械工程学报, 1993, 29(1): 58-65，8 |
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| 作者姓名： | 黄雨华 王德俊 姜涛 米毓德 钟苏 |
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| 作者单位： | 东北工学院;哈尔滨大电机研究所 |
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| 摘 要： | 本文针对大型混流式水轮机的复杂运动工况和特殊的工作环境，在大量统计和试验的基础上，应用随机疲劳和腐蚀疲劳等理论，提出了一个完整的疲劳设计方法，它包括了载荷谱的确定，腐蚀环境中材料的疲劳特性及其影响系数的实验研究以及寿命和安全系数的计算方法等。这一研究成果打破了大型混流式水轮机长期以来只能采用静强度设计的状况，能有效地评估水轮机在设计和运行中疲劳强度的安全可靠性。
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| 关 键 词： | 安全系数 混流式水轮机 疲劳强度 寿命 |
A DESIGN METHOD FOR AVOIDING FATIGUE FAILURE OF LARGE FRANCIS TURBINE RUNNER |
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| Huang Yuhua,Wang Dejin,Jian Tao,Mi Yude,Zhong Su. A DESIGN METHOD FOR AVOIDING FATIGUE FAILURE OF LARGE FRANCIS TURBINE RUNNER[J]. Chinese Journal of Mechanical Engineering, 1993, 29(1): 58-65，8 |
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| Authors: | Huang Yuhua Wang Dejin Jian Tao Mi Yude Zhong Su |
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| Affiliation: | Northeast University of Technology Harbin Research Institute of Large Electric Machinery |
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| Abstract: | According to the complicated conditions ans and specific environment of large Francle turbine, a comprehensive design method for avolding fatigue failure is proposed in the paper. The method made use of the theories of random fatigue and corrosion fatigue is based on a large number of statistical data and fatigue experiments. The paper includes the determination of design load spectrum, fatigue charactristion of the materials in corrosive environment, various factors affecting fatigue strength and ways of calculating service life and safety factor etc. The results of this study would supersede static design method of the turbines and can more efficiently evaluate the safety of the turbine against fatigue failure in design or in service. |
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| Keywords: | Fatigue strength Francis turbine Safety factor Service life |
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