高压水除鳞喷头外流场流速分析  

Flow Velocity Analysis for External Flow Field of the High-Pressure Water Descaling Nozzle

作　　者：崔钺 廉博 王丽元 刘海生[1] 闫晓丽[1] CUI Yue;LIAN Bo;WANG Li-yuan;LIU Hai-sheng;YAN Xiao-li(Hebei Key Laboratory of Intelligent Equipment Digital Design and Process Simulation,Tangshan University,Tangshan 063000,China;Department of Hot Rolling,Tangshan Iron and Steel Company of HBIS,Tangshan 063016,China;Department of Intelligent Manufacturing,Tangshan Vocational College of Science and Technology,Tangshan 063001,China)

机构地区：[1]唐山学院河北省智能装备数字化设计及过程仿真重点实验室,河北唐山063000 [2]河钢集团唐钢公司唐钢新区热轧事业部,河北唐山063016 [3]唐山科技职业技术学院智能制造系,河北唐山063001

出　　处：《唐山学院学报》2023年第3期27-32,共6页Journal of Tangshan University

基　　金：河北省教育厅科学技术研究项目(QN2022198)。

摘　　要：为提升钢坯除鳞效果,基于可实现k-ε模型选取在用粗轧机入口某型号扁平扇形喷嘴进行高压水除鳞喷头外流场流速分析。结果表明,在高压水除鳞喷头结构参数确定的情况下,外流场打击区域的高压水射流流速直接受靶距的影响;不同入口压力下水射流流速随靶距的增加呈明显降低趋势,最大流速差随靶距(30~120 mm)的增加由40 m/s降至约18 m/s;得到的不同压力下靶距120 mm处水射流流速分布趋势说明,单纯提高高压水除鳞系统的工作压力对除鳞区域作用范围的影响不大;模拟射流中心区域打击长度与实验打击作用线长度吻合良好,说明仿真模型能够准确表达高压水除鳞喷头外流场流速的变化情况。In order to improve the descaling effect a certain type of flat fan-shaped nozzle at the entrance of roughing mill was selected to analyze the flow velocity based on realizable k-εmodel.The results show,when the nozzle structural parameters of the high-pressure water descaling were determined,the high-pressure water flow velocity in the impact area of the outflow field was directly affected by the target distance.The flow velocity of water jet at different inlet pressures decreased obviously with the increase of target distance,and the maximum velocity difference decreased from 40 m/s to 18 m/s with the increase of target distance(30~120 mm);the distribution trend of velocity at the target distance of 120 mm under different pressure was obtained,which showed that simply increasing the working pressure of the high-pressure water descaling system had little effect on the action range of the descaling area.The simulated jet center striking length was in good agreement with the experimental striking line length,which meant that the simulation model could accurately reflect the velocity change of the outflow field of the high-pressure water descaling nozzle.

关 键 词：高压水除鳞 喷嘴 流速 可实现k-ε模型 靶距 

分 类 号：TF303[冶金工程—冶金机械及自动化]