控制棒驱动机构传热模型的简化及在疲劳分析中的应用

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Simplification of Thermal Model for Control Rod Design Mechanism and Its Application in Fatigue Analysis

摘要: 控制棒驱动机构承压部件的热环境较为复杂,难以直接分析各种换热方式对热分布的影响。以某型号控制棒驱动机构为例,运用传热学的3种换热形式理论,将控制棒驱动机构的外部换热等效为对流换热,将内部的换热行为等效为导热,简化换热方式进行瞬态热分析,继而采用雨流记数法进行疲劳分析。解决了复杂热环境疲劳分析的难点,达到了简化分析的目的。
- 控制棒驱动机构 /
- 导热 /
- 对流 /
- 辐射 /
- 疲劳分析
Abstract: Thermal situation of control rod design mechanism is complex,and it is difficult to directly analyze the effect of various heat transfer mechanism on the thermal distribution.Taking one CRDM as an example,and based on 3 kinds of heat transfer theory,transient analysis is conducted by taking the equivalent convective heat transfer as the external heat transfer of CRDM and the equivalent heat conductivity as the internal heat transfer,to simplify the heat transfer mechanism,and then fatigue analysis is conducted by the rain-flow method.This method finds an effective way to solve the fatigue problem of complex thermal situation.
- Control Rod design Mechanism /
- Heat conductivity /
- Convection /
- Radiation /
- Fatigue analysis