高温接触角测量仪中感应加热装置温度均匀性的优化研究  

Optimization Study of Temperature Uniformity of Induction Heating Device in High Temperature Contact Angle Measuring Instrument

作　　者：侯书增 张徽坤 李轩 孙巍峰 谢宁 HOU Shu-zeng;ZHANG Hui-kun;LI Xuan;SUN Wei-feng;XIE Ning(School of Mechanical Engineering,Sichuan University of Science&Engineering,Yibin 644005)

机构地区：[1]四川轻化工大学机械工程学院,四川宜宾644005

出　　处：《制造业自动化》2025年第4期166-174,共9页Manufacturing Automation

基　　金：国家自然科学基金(51961003);四川省科技厅重点研发项目(2023YFG0239);四川轻化工大学人才引进项目(2020RC17)。

摘　　要：为了降低高温接触角测量仪中石墨基座因受热不均而产生的测量误差,首先基于该仪器的感应加热原理建立了Comsol有限元模型,采用控制变量法探究了电流频率、石墨基座厚度、石墨基座下表面与线圈截面圆心的间距等参数对石墨基座上表面温度差的影响,试验结果表明上表面温度标准差与电流频率、基座厚度成正比,与石墨基座下表面和线圈截面圆心的间距成反比;接着通过软件Design-Expert对多种参数交互作用进行了响应面分析,在此基础上利用软件内的优化模块确定了最优参数为:基座厚度为2 cm,电流频率为306 kHz,石墨基座下表面和线圈截面圆心的间距为3.65 cm;最后将最优参数带入有限元模型并对线圈的结构进行了优化,优化后有限元仿真后处理结果表明:不同电流下,石墨基座上表面工作区域的温度浮动最小为0.16%,最大为0.33%,温度分布均匀性良好。To reduce measurement errors caused by uneven heating of the graphite base in high-temperature contact angle measuring instruments,a Comsol finite element model was first established based on the principle of induction heating of the device.The influence of parameters such as the current frequency,the thickness of the graphite base,and the distance between the lower surface of the graphite base and the center of the coil crosssection on the upper surface temperature difference of the graphite base was investigated using the controlled variable method.The experimental results showed that the standard deviation of the temperature on the upper surface was directly proportional to the current frequency and the base thickness and inversely proportional to the distance between the lower surface of the graphite base and the center of the coil cross-section.Subsequently,response surface analysis was performed on the interactions of multiple parameters using the Design-Expert software.Based on this,the optimal parameters were determined using the optimization module of the software:a base thickness of 2 cm,a current frequency of 306 kHz,and a distance of 3.65 cm between the lower surface of the graphite base and the center of the coil cross-section.Finally,the optimal parameters were imported into the finite element model,and the structure of the coil was optimized.The post-processing results of the optimized finite element simulation indicated that the temperature fluctuation in the working area on the upper surface of the graphite base was a minimum of 0.16%and a maximum of 0.33%under different currents,demonstrating good uniformity of temperature distribution.

关 键 词：响应面法 感应加热 优化设计 有限元分析 

分 类 号：TH89[机械工程—仪器科学与技术]