RH一体式浸渍管真空槽结构与优化

摘要

开发了一种一体式浸渍管真空槽,并对其进行了流体仿真和热力仿真.一体式浸渍管真空槽扩大了浸渍管内径,可明显提高RH钢液循环流量.流体仿真发现减小浸渍管的中心距并不影响钢液循环的流态,而且可以找到提升气最大有效流量.热力仿真可以提前发现结构的热变形,有利于结构优化.工程应用证明,一体式浸渍管真空槽能够满足真空精炼处理的要求,是实现小口缘钢包RH高效生产的有效技术.%An integrated immersion tube was proposed and studied using hydrodynamics and thermodynamics FEA technologies.The integrated immersion tube has larger inner diameter and can increase the circulation rate of liquid steel during treatment.The result of hydrodynamics FEA shows that the flow regime was not affected by shortened center-distance of integrated immersion tube and tells the maximum effective flow of lift gas.Through thermodynamics FEA,we obtain the optimum structure solution by analyzing thermal deformation.Application to real engineering verifies that vacuum tank with integrated immersion tube is an effective technology for RH vacuum treatment in little size ladles.