学术论文

      吹气孔堵塞对RH循环流量的影响

      Effect of nozzles blocking on the circulation flow rate in RH vacuum equipment

      摘要:
      根据相似原理,以某厂300 t RH为原型建立了1﹕4的水模型,集中研究了吹气孔堵塞对RH循环流量的影响。结果表明,吹气孔堵塞时,气量偏差对循环流量影响最大;当吹气孔对称堵塞时,吹气孔堵塞位置的连线与环流方向成0o时循环流量最小,呈90o时循环流量最大;当吹气孔集中堵塞时,随吹气孔堵塞个数的增加,气泡泵的作用机制由环状机制向簇群状机制转变,循环流量增加。
      Abstract:
      Based on the similarity principle, a water model with a scale of 1﹕4 of a 300 t RH unit was established to study the effect of different modes of nozzles blocking on the RH circulation flow rate. Results show that the deviation of gas volume is the main factor influencing the circulation flow rate in the case of nozzles blocking. In the situation of symmetrical blocking, the circulation flow rate is minimum when the angle of the attachment of the blocking position and circulation direction is 0o, on the contrary, the circula-tion flow rate is maximum when the angle is 90o. In the situation of concentrated blocking, with the increase of the number of blocked nozzles, the mechanism of bubble pump action shifts from the annular bubble pump mechanism to the cluster bubble pump mechanism and the circulation flow rate is increased.
      作者: 李怡宏 [1] 申小维 [2] 唐德池 [3] 黄庆学 [4]
      Author: LI Yi-hong [1] SHEN Xiao-wei [2] TANG De-chi [3] HUANG Qing-xue [4]
      作者单位: 太原科技大学太原重型机械协同创新中心,太原034002; 北京科技大学钢铁冶金新技术国家重点实验室,北京100083 北京科技大学钢铁冶金新技术国家重点实验室,北京,100083 首钢技术研究院,北京,100043 太原科技大学太原重型机械协同创新中心,太原,034002
      刊 名: 工程科学学报 ISTICEIPKU
      年,卷(期): 2016, 38(z1)
      分类号: TF769.4
      机标分类号: TV1 TP3
      在线出版日期: 2016年7月25日
      基金项目: 太原科技大学博士启动基金资助项目,山西省青年科技研究基金资助项目,国家青年科学基金资助项目