辊磨压力框架磨损问题的流场分析研究  

The Flow Analysis Research of the Pressure Frame Wear Problem in a Roller Mill

作　　者：豆海建[1] 王维莉[1] 秦中华[1] 杜鑫[1] 柴星腾[1] 于涛 DOU Haijian, WANG Weili1, QIN Zhonghua1,(1 Tianjin Cement Industry Design ＆ Research DU Xin1, CHAI XingtengL, YU Tao2 Insistute Co., Ltd. , Tianjin, 300400： 2 Sinoma（Tianjin） Powder Technology Ltd. , Tianjin, 300400)

机构地区：[1]天津水泥工业设计研究院有限公司,天津300400 [2]中材(天津)粉体技术装备有限公司,天津300400

出　　处：《水泥技术》2018年第2期26-30,共5页Cement Technology

摘　　要：本文以中材(天津)粉体技术装备有限公司执行的某技改MLS4028生料辊磨实物风环为研究对象,构建三维几何模型和计算网格,采用CFD(Computational Fluid Dynamics)数值分析了该磨机风环的流场结构,研究得知,加压框架异常磨损的主要原因是风环导风叶片角度参数不合理导致局部大涡和风环高速气流直吹加压框架,从缓解磨损方面数值模拟研究得到了合理风环导风叶片角度和风环径向位置,提出了解决方案,取得了良好的效果,为解决辊磨类似的磨损问题提供了一种切实可行的解决思路。In this paper, the armour and louvre ring of the MLS4028 vertical raw roller mill that contracted by Sinoma（TIANJIN） Powder Technology Ltd. in a technological upgrading project is built into 3D geometry model and calculation meshes, then the flow field inside the middle and down parts of MLS4028 is numerically simulated by CFD technology. The main reasons resulting in abnormal wear of pressure frame are studied according to the simulation flow field, which indicates the unreasonable louvre angle inside armour ring causes the local big eddy and high speed gas current directly blowing the pressure frame. To relieve ttle pressure frame wear, different louvre angle and radial position are simulated and the reasonable values of the two parameters are obtained by studying simulation results, according to which the solution scheme is designed and adopted. Finally good industrial application results proves that it is a good solution to the abnormal wear problem of the pressure frame, which provides a practical and feasible solution scheme for the alike wear problems of vertical roller mill.

关 键 词：辊磨 风环 导风叶片 CFD 流场 磨损 

分 类 号：TQ172.63[化学工程—水泥工业]