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本文采用新的雨流计数模型和三参数威布尔分布数学模型进行了双击式水轮机车转轮载荷谱的数据处理。采用三参数幂函数数学模型建立了水轮机转轮P—S—N曲线。采用可靠性设计方法进行了水轮机转轮疲劳强度设计,从而提出了各种结构转轮在给定寿命下的安全使用水头及其相应的可靠度。
In this paper, a new rain flow counting model and a three-parameter Weibull distribution mathematical model were used to carry out the data processing of the wheel load spectrum of a double-tapped waterwheel. The P-S-N curves of turbine runner are established by the mathematical model of three-parameter power function. The reliability design method was used to design the fatigue strength of the turbine runner, and the safety of the head and its corresponding reliability of the various structure runners for a given life was put forward.