铁水KR脱硫搅拌器热力耦合研究  

Study on Thermal Coupling of Ferroiron KR Desulfurization Mixer

作　　者：蒋麒麟 高刚毅[1] 刘辉 梅晓雄 姜海翔[1] 吴笛铨 Jiang Qilin;Gao Gangyi;Liu Hui;Mei Xiaoxiong;Jiang Haixiang;Wu Diquan(School of Mechanical Engineering,Jingchu Institute of Technology,Jingmen 448000)

机构地区：[1]荆楚理工学院机械工程学院,湖北荆门448000

出　　处：《冶金设备》2024年第5期9-15,共7页Metallurgical Equipment

基　　金：荆楚理工学院校级科研项目(QN202423);荆楚理工学院校级科研项目(YB202314)。

摘　　要：为解决KR型搅拌装置由瞬态热流加载引起的搅拌装置开裂问题,建立热力耦合模型,对搅拌器裂缝进行识别,探讨温度场与变形传递关系,得出其在热力耦合作用下的应力及变形分布特点。研究结果表明:搅拌器的温度场分布不均匀,稳定最高温度为1353℃,最低温度为225.76℃,搅拌器叶片与铁水接触部分是主要热影响区;最大等效热应力为3.4424×10^(-8)MPa,最大等效热应力发生在搅拌器叶片处,计算结果符合极限应力规定中的强度要求;搅拌器最大变形位于搅拌器叶片附近区域,最大变形量为0.0287mm;最小变形量位于搅拌器顶部连接端,最小变形量为0.0031mm。模拟和理论计算表明,该方法能较好地反映搅拌装置的实际故障情况,对搅拌装置的优化设计具有一定指导意义。In this paper,the cracking problem of stirring device caused by transient heat flow loading is analyzed.The thermal coupling model is established to identify the stirrer crack,discuss the relationship between the temperature field and the deformation transfer,and obtain the stress and deformation distribution characteristics under the thermal coupling action.The research results show that the temperature field of the mixer is uneven,the stable maximum temperature is 1353℃,the minimum temperature is 225.76℃,the contact part is the main thermal influence area;3.442410^(-8) MPa,the maximum equivalent thermal stress occurs at the mixer blade;the maximum deformation of the mixer is 0.0287 mm,and the minimum deformation is 0.0031 mm.Simulation and theoretical calculation show that the proposed method can better reflect the actual failure situation of the mixing device,and it can guide the optimal design of the mixing device.

关 键 词：铁水脱硫 KR脱硫 搅拌器 瞬态温度场 热应力 

分 类 号：TF321.7[冶金工程—冶金机械及自动化]