烘干炉内易开盖升温特性试验及数值模拟研究  

Experiment and Numerical Simulation on Temperature Rise Characteristics ofEasy-open Ends in Drying Furnace

作　　者：翟银星 陈厚忠 陈文明 冯致 潜培豪 王进卿 ZHAI Yinxing;CHEN Houzhong;CHEN Wenming;FENG Zhi;QIAN Peihao;WANG Jinqing(Easy Open Lid Industry Corp Yiwu,Zhejiang Yiwu 322000,China;College of Metrology and Measurement Engineering,China Jiliang University,Hangzhou 310018,China)

机构地区：[1]义乌市易开盖实业公司,浙江义乌322000 [2]中国计量大学计量测试工程学院,杭州310018

出　　处：《包装工程》2024年第11期204-212,共9页Packaging Engineering

基　　金：浙江省自然科学基金(LQ20E060005)。

摘　　要：目的易开盖刻线修补涂层在烘干过程中易出现气泡、开裂和剥落等问题,为此需对易开盖在烘干炉内的升温特性进行研究。方法采用现场试验和数值模拟方法,首先对炉内温度分布及易开盖表面温度变化进行测定,随后基于CFD仿真技术,利用动网格模型对易开盖在炉内运动加热过程进行模拟,并采用动态边界条件对单片易开盖表面温度分布进行计算。结果炉内温度变化特性为沿盖体运动方向先上升后下降,两侧各存在一个温度突降区域;易开盖在炉内加热过程呈现快速升温、缓慢升温和快速降温3个阶段,125、130和135℃3个烘干炉设置温度工况下,易开盖表面最高温度分别为148、152和155℃,温度越高涂层气泡越多;加热初期易开盖表面温差较大,最高达5℃,后期温差逐渐降低至1℃以下。仿真结果与试验数据吻合较好,平均相对误差MRE值为0.1。结论获得了易开盖在炉内的升温特性及最优加热工况,同时构建了基于动网格模型的易开盖运动加热CFD仿真方法,对烘干炉的设计和运行具有指导意义。Since the protective coating on easy-open ends frequently encounters challenges like bubbling,fissures,and delamination during the drying process,the work aims to study the temperature rise characteristics of easy-open ends in the drying furnace.By combining on-site experiments and numerical simulations,the thermal distribution within the furnace and the surface temperature variations of the easy-open ends were measured.Subsequently,based on CFD simulation technology,a dynamic mesh model was employed to intricately replicate the thermal evolution experienced by the moving easy-open ends inside the furnace.Additionally,dynamic boundary conditions were employed to meticulously calculate the surface temperature distribution of each individual easy-open end.The temperature change in the drying furnace was characterized by an initial temperature increase followed by a subsequent decrease,mirroring the motion of the easy-open ends and there were prominent temperature drop regions on both sides of this trajectory.The thermal transformation experienced by the easy-open ends within the drying furnace could be divided into three phases of rapid heating,gradual heating,and swift cooling.Under three distinct drying furnace temperature settings(125℃,130℃,and 135℃),the maximum surface temperature of the easy-open ends progressively reached 148℃,152℃,and 155℃,respectively,indicating a direct correlation between higher temperature and increased bubble formation in the coating.During the initial heating phase,there was a notable temperature difference across the surface of the easy-open ends,peaking at 5℃,which gradually diminished to below 1℃ in later stages.The simulation results were consistent with the experimental data,with an average MRE of just 0.1.This comprehensive study not only obtains the thermal characteristics and optimal heating conditions for easy-open ends within the drying furnace but also establishes the groundwork for CFD simulation approach of easy-open end motion heating grounded in a dynamic

关 键 词：干燥 动网格模型 温度场 升温特性 

分 类 号：TB489[一般工业技术—包装工程] TP391.9[自动化与计算机技术—计算机应用技术]