四流“L型”中间包控流装置优化的水模拟研究  

Optimization of Flow Control Devices in Four-strand L Type Tundish by Water Modelling

作　　者：李京社[1] 马昱[1] 常国平[1] 杨树峰[1] 杨明生 

机构地区：[1]北京科技大学冶金与生态工程学院,北京100083 [2]新兴铸管集团公司,河北武安056300

出　　处：《钢铁钒钛》2010年第1期30-35,共6页Iron Steel Vanadium Titanium

摘　　要：以新兴铸管炼钢部四流"L型"中间包为研究对象,根据相似原理建立了1∶2的四流中间包水模型,研究了不同结构的中间包的流体流动特性。试验结果表明:原型中间包内部结构不合理,存在较大死区,最大死区比例为66.2%,中间包四流之间的流体流动特性差异很大;各种优化方案中,"挡墙+单吹气"(方案C)与"挡墙+单吹气+湍流器"(方案D)较理想,其中方案D死区比例最小,平均停留时间最长,其死区比例为19.7%,比原型下降了15.2%,平均停留时间延长到433 s,比原型增加了83 s。A four-strand L type tundish in the steel plant of Xinxing Ductile Iron Pipes Co. , Ltd. , was studied. On the basis of similar principle, a 1 ： 2 physical model of four-strand caster tundish was built. The simulating study shows that the internal structure of the prototype tundish was unreasonable, existing a large dead zone ,the largest dead area ratio was 66.2% ;There was a large difference in flow characteristics exiting between the four outlets of the tundish. So the original design of the tundish can not meet the technical requirements for inclusion floatation and temperature homogenization. Among all kinds of optimization cases, ＂baffle ＋ single-blowing＂ （ case C ） and＂ baffle ＋ single-blowing ＋ turbulence inhibitor＂ （ case D ） are ideal optimization cases. Case D has the smallest dead zone proportion and the longest average residence time,with the dead zone proportion 19.7%, dropping 15.2% than the prototype, and the average residence time was 433 s,increasing 83 s than the prototype.

关 键 词：中间包 控流装置 死区 平均停留时间 非金属夹杂物 铸坯洁净度 

分 类 号：TF777[冶金工程—钢铁冶金]