轮毂轴承实验中泥浆管道沉积问题研究  

Research on mud pipeline deposition in hub bearing test

作　　者：胡世鸣 翁泽宇[1] 翁聪 金晓航[1] 周旭 黄德杰 Hu Shiming;Weng Zeyu;Weng Cong;Jin Xiaohang;Zhou Xu;Huang Dejie(College of Mechanical Engineering,Zhejiang University of Technology,Hangzhou 310014;Zhejiang Wanxiang Precision Industry Co. Ltd., Hangzhou 311202)

机构地区：[1]浙江工业大学机械工程学院,杭州310014 [2]浙江万向精工有限公司,杭州311202

出　　处：《高技术通讯》2020年第4期415-423,共9页Chinese High Technology Letters

基　　金：国家自然科学基金(51505424)资助项目。

摘　　要：泥浆管道沉积导致泥浆的配比和泥浆中不同粒径颗粒的占比的变化,是影响轮毂轴承泥水实验有效性的重要因素。本文将泥浆颗粒简化为9种不同粒径颗粒,采用欧拉-欧拉模型对实验机管道泥浆输送过程进行多相流数值模拟,提出泥浆沉积量计算方法,研究了管道内泥浆颗粒浓度分布及其颗粒沉积达到稳定状态的时间、流量对泥浆的配比和泥浆中不同粒径颗粒的占比的影响。结果表明,在泥浆管道输送过程中,受重力的作用,泥浆颗粒主要集中于管道底部,在管道横截面上,泥浆颗粒浓度呈梯度变化;不同粒径的泥浆颗粒沉积达到稳定状态的时间接近一致,并随着泥浆流量的增大而有适量的缩短;随着流量增大,泥浆输入管道内的泥浆颗粒沉积量总体呈减少趋势,当流量较大时,减小趋势变缓;大粒径颗粒更易产生沉积,且受流量的影响较大。最后,通过泥浆沉积量实验实测,对数值模拟结果进行了验证。研究成果可以针对影响实验结果有效性的泥浆的配比和泥浆中不同粒径颗粒的占比,以泥浆的流量控制为手段,给出定量控制策略。The change of the proportion of mud and the proportion of particles with different diameters in the mud caused by the deposition of mud pipeline are important factors affecting the effectiveness of muddy water test of hub bearing.The mud particles are simplified into 9 kinds of particles with different diameters,the multi-phase flow numerical simulation of the pipeline mud transport process of the testing machine is carried out by using the Euler-Euler model,and the mud deposition calculation method is proposed.The concentration distribution of mud particles in the pipeline and the time for particle deposition to reach a stable state,as well as the influence of flow rate on the ratio of mud and the proportion of particles with different sizes in mud are studied.The results show that the mud particles are mainly concentrated in the bottom of the pipeline due to the action of gravity in the process of mud pipeline transportation,and the concentration of mud particles on the cross section of the pipe varies in a gradient.The deposition time of mud particles with different sizes is nearly the same,and is shortened with the increase of mud flow.The deposition amount of mud particles in the mud input pipeline shows a decreasing trend with the increase of flow rate,and the decreasing trend slows down when the flow rate is larger.Large size particles are more likely to deposit and are greatly affected by flow rate.Finally,the numerical simulation results are verified by the measurement of mud deposition.The results of this study can be used to give quantitative control strategies by means of mud flow control for the proportion of mud and the proportion of particles with different sizes in the mud which affects the effectiveness of test results.

关 键 词：泥浆 沉积量 轮毂轴承 数值模拟 

分 类 号：TU7[建筑科学—建筑技术科学]