连铸二冷区内混式气水雾化喷嘴的水流密度分布研究  

Water flow density distribution in internal mixing air-water atomizing nozzle in secondary cooling zone of continuous casting

作　　者：李阳[1,2] 吴卫利 程常桂[1,2] 刘振宇 黄涛[1,2] Li Yang;Wu Weili;Cheng Changgui;Liu Zhenyu;Huang Tao(Hubei Provincial Key Laboratory for New Processes of Ironmaking and Steelmaking,Wuhan University of Science and Technology,Wuhan 430081,China;State Key Laboratory of Refractories and Metallurgy,Wuhan University of Science and Technology,Wuhan 430081,China)

机构地区：[1]武汉科技大学钢铁冶金新工艺湖北省重点实验室,湖北武汉430081 [2]武汉科技大学省部共建耐火材料与冶金国家重点实验室,湖北武汉430081

出　　处：《武汉科技大学学报》2022年第2期81-86,共6页Journal of Wuhan University of Science and Technology

基　　金：国家自然科学基金面上资助项目(51974213,52174324);武汉科技大学校级大学生创新创业训练计划项目(20ZA021).

摘　　要：通过水流密度分布测试实验,研究了喷淋高度、气压、水压和加速环设置对内混式气水雾化喷嘴水流密度分布的影响。结果表明,当气压和水压一定时,不同喷淋高度下气水雾化喷嘴的水流密度分布较为一致。相同喷淋高度下,随着p_(气)/p_(水)的减小,传统喷嘴和增设加速环喷嘴的水流密度峰值均逐渐增大,并且相同工况下,增设加速环喷嘴的水流密度峰值相对更大,而射流雾化角随着气压和水压的变化波动较小,射流更为稳定,能够有效保证铸坯雾化面积,满足更高的二冷区冷却强度需求。Through the water flow density distribution test,the effects of spray height,air pressure,water pressure and acceleration ring device on the water flow density distribution in the internal mixing air-water atomizing nozzle were studied.The results show that when the air pressure and water pressure are constant,the water flow density distribution in the air-water atomizing nozzle at different spray heights is relatively consistent.At the same spray height,with the decrease of p_(air)/p_(water),the peak values of water flow density in traditional nozzle and nozzle with accelerating ring gradually increase;under the same working conditions,the peak value of water flow density in the nozzle with accelerating ring is relatively larger,while its atomizing angle fluctuates little with the change of air pressure and water pressure,and the jet flow is more stable,which can ensure the atomizing area of the cast slab and meet the higher cooling intensity requirements of the secondary cooling zone.

关 键 词：内混式气水雾化喷嘴 高速连铸 二冷区 加速环 水流密度分布 雾化角 

分 类 号：TF7[冶金工程—钢铁冶金]