摘要
雷蒙机主机部分能量消耗在配套产品中占比很高,以主机入口风速、主轴转速和整机出口压力为参数,利用CFD流体仿真中DPM模型进行三因素响应面试验,分析主机压损的变化规律,得出入口风速和主轴转速为压损的显著影响因素。对比主机压损的极限工况,流场的涡流影响会导致主机压损增加。对入口风速和主轴转速进行单因素分析,得出入口风速越小或主轴转速越大,风场流动越稳定,湍流动能变化越小,主机压损越小。研究成品颗粒与风场的耦合作用,颗粒在风场的携带作用下首先在磨辊区获得较大的动能,并随风场流动向分级机输送,最终在分级机转动形成的局部旋向风场的作用下被选出。研究结果为确定雷蒙机主机参数和分析流固耦合提供了参考。
The energy consumption of the main host of Raymond mill accounts for a high proportion in the supporting products,take the inlet wind speed,spindle speed and outlet pressure as parameters,the discrete phase DPM model of CFD fluid simulation is used to carry out three factor response surface test.By analyzing the changing principle of the pressure loss of Raymond mill,it is concluded that the inlet wind speed and the spindle speed are the significant influencing factors.Compared with the limit working condition of the pressure loss of the main host,the eddy current influence of the flow field will lead to the increase of the pressure loss.The single factor analysis of inlet wind speed and spindle speed shows that when the inlet wind speed is smaller or the spindle speed is larger,the flow stability of the wind field is higher,the change of turbulent kinetic energy is smaller,thus the pressure loss of the main host is smaller.By studying the interaction effect between the finished particles and the wind field,it is concluded that under the carrying action of the wind field,the particles first obtain a large kinetic energy in the grinding roller area,and then flow with the wind field to the classifier,and finally are classified and selected under the action of the local rotating wind field formed by the rotation of the classifier.The research results provide a reference for the determination parameters of Raymond mill and fluid-structure interaction analysis.
作者
姜兵兵
卢伟
姚嘉
李雪梅
陈伟燚
JIANG Bingbing;LU Wei;YAO Jia;LI Xuemei;CHEN Weiyi(College of Mechanical and Electrical Engineering,Guilin University of Electronic Technology,Guilin 541004,China)
出处
《金属矿山》
CAS
北大核心
2022年第12期189-195,共7页
Metal Mine
基金
广西制造系统与先进制造技术重点实验室(主任基金)项目(编号:22-35-4-S007)
2021年广西研究生联合培养基地项目(编号:桂学位(2021)6号)。
关键词
雷蒙机
CFD仿真
响应面试验
压损
流固耦合
Raymond mill
CFD simulation
response surface test
pressure loss
fluid-structure interaction
