基于Workbench的超低温阀门长颈阀盖温度场分析

Analysis of Temperature Field of Cryogenic Valve Based on Workbench

基于ANSYS Workbench对通径为DN50的超低温阀门冷态试验下(-196℃)进行稳态仿真模拟,分析长颈阀盖的温度场,提取出填料函的温度分布,分析填料函的温度是否在可操作的温度区间内,研究了材料的导热系数和滴水盘半径,对长颈阀盖温度场的影响。研究结果表明,材料的导热系数越大填料函的底部温度越低。模拟滴水盘不同半径条件下的长颈阀盖的温度场,选取了最佳的滴水盘半径使填料函的温度最高,保证填料函的温度在0℃以上不结冰,使阀杆能正常操作。

Based on the ANSYS Workbench, the cryogenic valve was tested under cold test （ -196 ℃ ） to analyze the simulation of the temperature field of the long neck valve cover and extract the temperature distribution of the stuffing box, analyzing whether the temperature of the stuffing box is within the operable temperature range. The influence of the gap between thermal conductivity of the material and the temperature field of the long neck valve cover was studied as well as the radius of the drip tray. The results show that the greater the thermal conductivity of the material, the lower the bottom temperature of the stuffing box. Change the radius of the drip tray to simulate and select the optimum drip tray radius, ensuring that the temperature of stuffing box is not frozen above 0 ℃ and the stem cart operate normally.