高温中压蒸汽系统球阀热应力仿真计算及寿命评估
Simulation and Life Evaluation of Thermal Stress of Ball Valve in High Temperature Medium Pressure Steam System
摘要:
基于稳态温度场的计算结果,进行瞬态温度计算,然后基于瞬态温度场结果计算整个阀门系统的热应力。阀体局部集中应力最大达到278 MPa,其他零部件的热应力均小于材料的许用应力。并对阀门承压壳体进行了疲劳敏感性分析。
Abstract:
Based on the calculation results of the steady-state temperature field, a transient temperature calculation is performed, and then the thermal stress of the entire valve system is calculated based on the results of the transient temperature field. For the valve body local concentrated stress up to 278 MPa, the thermal stress of other components are less than the allowable stress of the material. The fatigue resistance of the valve shell was analyzed.
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