铝电解槽母线电热状态模拟及电平衡分析  

Electro-thermal simulating and electric balance analysis for bus bars of large aluminium reduction cells

作　　者：戚喜全[1] 

机构地区：[1]东北大学设计研究院(有限公司),辽宁沈阳110013

出　　处：《轻金属》2012年第12期29-34,共6页Light Metals

摘　　要：阴极母线电平衡计算是电解槽母线设计中非常重要的一环。由于电解槽母线的特殊性,非全电热模拟计算将无法真正反映母线电热状态。本文利用ANSYS软件,对某大型电解槽母线进行建模,实施全热电热耦合计算,结果表明:①母线总压降高于设计值,计算值与实际情况基本一致。②进出电侧与软带相连的大母线表现出不同的温度分布特征,出电侧母线随电流密度提高而升高,进电侧则相反;母线上最高温度点出现在与软带相连处。③同一支路上:进电侧,软带越厚,温度越高。出电侧,软带越薄,温度越高。④电流强化时,母线压降加速升高。⑤电流强化后,母线中各支路之间的电流差值会扩大。Electric balance calculation is one of the most important steps of busbar design for larger aluminium reduction cells. Because of theirs special functions and locations, non -full electro - thermal simulating of them can not really reflect their status. In this paper, ANSYS was used to simulate elec- tro - thermal status of one of the riser with all connecting flexible busbars and bus bar. Results showed ： （1） The overall voltage of the riser was much higher than the design value, and was basically in line with actual condition;（2） Power incoming side and power outgoing side bus bars connecting to flexible bus- bars showed different temperature distribution characteristics, the temperature of the power outgoing side busbar increased with increasing current density, while the temperature of the power outgoing side busbar decreased with increasing current density and the highest temperature was at the joints connecting flexible busbar;（3） On the same branch, at the power outgoing side, the thicker the flexible busbar, the higher the temperature was. At the power outgoing side, the thinner the flexible busbar, the higher the temperature was;（4） When the current intensifying, the busbar voltage increasing accelerated;（5） after current intensifying, the current differences among all branches increased.

关 键 词：阴极母线 电热耦合 母线温度 母线压降 电平衡 

分 类 号：TF821[冶金工程—有色金属冶金]