电动高温闸阀阀体热特性分析与优化设计

Valve Body's Thermal Characteristics Analysis for High-Temperature Electrical Gate Valves and Its Optimal Design

基于Ansys Workbench的热-构耦合对阀体结构进行了热特性分析,并对板筋尺寸进行了优化设计。首先,分析了正常工况下阀体的物理模型,可近似地看作变面积式肋片导热问题。其次,在Ansys Workbench中通过材料的添加、网格的划分和边界条件的设定,模拟了高温电动闸阀阀体的实际工况,求解出了高温电动闸阀在正常工况下,阀体温度、热应变、总体变形和等效应力的分布。最后,通过对板筋尺寸的优化设计,得到了板筋尺寸δ和H与热应变、总体变形和等效应力最大值的变化关系,最终得到了板筋优化后的尺寸。

Having Ansys Workbench thermal-structural coupling based to analyze thermal characteristics of valve body structure was implemented, including the optimal design of plate rib＇ s size ; and the valve body＇ s physical model under normal working conditions can be similarly regarded as the heat conduction of area-alterable ribs; and in the Ansys Workbench, through having the materials added and grids divided and the boundary conditions set, the valve body＇ s working condition of high-temperature electrical gate valve was simulated to obtain the distributions of valve body＇ s temperature, thermal strain, overall deformation and the equivalent stress ; through optimizing the size of plate ribs, the relationship between plate rib＇ s size 3, H and the thermal strain, overall deformation and the maximum equivalent stress can be reached ,so does the optimized size of plate ribs.