摘要
为解决高浓度充填料浆水力输送过程中水平管路磨损严重的问题,提出了采用三纹螺旋管进行料浆输送的方案。应用计算流体力学-离散单元法(CFD-DEM)对料浆输送过程进行了数值模拟研究,探究螺旋管道的料浆输送特性及管道磨损规律。结果表明,普通管道的磨损主要发生在管道底部,且磨损主要由颗粒滑动摩擦造成,而螺旋管中磨损较均匀地分散到管壁上。当入口速度为1.2~2.4m/s,颗粒平均粒径为1.2~2.1mm时,螺旋管的最大及平均磨损深度相较于圆管分别降低了17%~34.6%及72.6%~87.7%。螺旋管在保证料浆连续输送的同时,极大地降低了水平管道磨损,为充填管路设计提供了新思路。
In order to solve the problem of serious wear of horizontal pipe in the process of hydraulic transportation of high concentration filling slurry,a scheme of slurry transportation by three-groove spiral pipe was proposed.The computational fluid dynamics-discrete element method(CFD-DEM)was used to simulate the slurry transportation process.The slurry transportation characteristics and the wear law of the spiral pipe were explored.The results show that the wear of ordinary pipes mainly occurs at the bottom of the pipe,and the wear is mainly caused by the sliding friction of particles,while the wear in the spiral pipe is more evenly dispersed on the pipe wall.When the inlet velocity is 1.2-2.4m/s and the average particle size is 1.2-2.1mm,compared with the round pipe,the maximum and average wear depth of the spiral pipe are reduced by 17%-34.6%and 72.6%-87.7%,respectively.Spiral pipe can greatly reduce the wear of horizontal pipe while ensuring the continuous transportation of slurry,which provides a new idea for the design of filling pipe.
作者
刘行
吕文生
杨鹏
杨超
LIU Hang;LYU Wensheng;YANG Peng;YANG Chao(School of Civil and Resource Engineering,University of Science and Technology Beijing,Beijing 100083,China;Beijing Key Laboratory of Information Service Engineering,Beijing Union University,Beijing 100101,China)
出处
《矿业研究与开发》
CAS
北大核心
2022年第11期200-207,共8页
Mining Research and Development
基金
国家自然科学基金资助项目(51641401).
