矿用LW800卧螺离心机转鼓锥角结构优化

详细信息    查看全文 | 推荐本文 |

英文篇名：Optimization Design of Cone Angle Structure of Rotary Drum of LW800 Horizontal Screw Centrifuge for Mining 作者：张建中 ; 李峰 ; 胡化增 ; 张广浩 ; 刘海洋 英文作者：Zhang Jianzhong;Li Feng;Hu Huazeng;Zhang Guanghao;Liu Haiyang;College of Mechanical and Electronic Engineering,Shandong University of Science and Technology; 关键词：矿用卧螺离心机 ; 转鼓锥角 ; 煤泥水 ; 优化设计 英文关键词：horizontal screw centrifuge for mining;;drum cone angle;;coal slime water;;optimization design 中文刊名：流体机械 英文刊名：Fluid Machinery 机构：山东科技大学机械电子工程学院; 出版日期：2019-07-30 出版单位：流体机械 年：2019 期：07 语种：中文; 页：17-20+44 页数：5 CN：34-1144/TH ISSN：1005-0329 分类号：TQ051.84

摘要

矿用卧螺离心机能够极大地提高煤泥水混合物的分离效果,减少煤炭资源的浪费并降低其污染。然而,卧螺离心机转鼓锥段的锥角大小能够直接影响煤泥的含湿率,所以转鼓锥段锥角的参数大小对离心机进行煤泥分离有着至关重要的作用。通过使用FLUENT软件采用仿真试验的方法研究了转鼓锥角的变化情况对卧螺离心机固液分离的影响。结果表明:根据目前所已有的矿用卧螺离心机中的转鼓锥角,选取不同的转鼓半锥角(3°,5°,7°,9°,11°,13°),对不同转鼓半锥角中矿用卧螺离心机所的分离性能进行了模拟研究,同时结合锥段处转鼓的截面压力变化规律,最终找出最佳的卧螺离心机转鼓半锥角,对其进行试验验证。结果表明矿用LW800卧螺离心机的转鼓锥角为7°时,比其他角度更能够有明显的分离效果,分离出的泥浆干稠,水液体清澈。即矿用LW800卧螺离心机的最佳转鼓锥角为7°。
        The mining horizontal screw centrifuge can greatly improve the separation effect of the coal slime and water mixture,reduce the wastage of coal resources and its pollution. However,the cone angle of the conical section of the horizontal screw centrifuge can directly affect the moisture content of the coal slime,so the parameter size of the cone angle of the conical section of the rotary drum plays a crucial role in the slime separation of the centrifuge. The effect of the change of the cone angle of the rotary drum on the solid-liquid separation of the horizontal screw centrifuge was studied by the simulation experiment method using FLUENT software. The results show that according to the cone angles of the rotary drum in the existing horizontal screw centrifuge,different half cone angles(3 °,5 °,7 °,9 °,11 °,13 °) were selected to simulate and study the separation performance change of the mining horizontal screw centrifuge at different half-cone angles of the rotary drum. At the same time,in combination with the change rules of the section pressure of the rotary drum at the conical section,the best half cone angle of the horizontal screw centrifuge was found finally through study and analysis. And the results were verified through test by setting up the test equipment.It can be seen that when the cone angle of the rotary drum of the mining LW800 horizontal screw centrifuge was 7°,it could have more obvious separation effect than that at other angles,the separated mud was thick and the water liquid was clear. That is,the optimum cone angle of the rotary drum of the mining LW800 horizontal screw centrifuge was 7°.

引文

[1]郑胜飞.卧螺离心机流场数值模拟及试验研究[D].杭州：浙江工业大学，2009.
    [2] Yung B P K,Merry H,Bott T R. The role of turbulent bursts in particles re-entainment in aqueous systems[J].Chemical Engineering Science,1989(44):873-882.
    [3]周知进，傅彩明.卧式螺旋离心机转鼓参数变化对其模态影响的仿真[J].中南大学学报（自然科学版），2007(2):309-313.
    [4]付双成，董连东，袁惠新.基于Euler多相流模型的卧螺离心机速度场数值模拟与分析[J].化工进展，2014,33(1):36-42.
    [5] Bell G R,Pearse J R.Experimental and computational analysisof thefeedacceleratorfora decanter centrifuge[J].Proceedings of the Institution of Mechanical Engineers,2014,230(2):174.
    [6]黄志新.卧螺离心机螺旋输送器结构、强度及其转鼓内的流场研究[D].北京：北京化工大学，2007.
    [7] Enwald H,Peirano E,Almstedt A E. Eulerian two-phaseflowtheoryappliedto fluidization[J].International Journal of Multiphase Flow,2006(22):21-66.
    [8]荆宝德，刘京广，王彬，等.卧螺离心机转鼓锥角结构设计及参数优化[J].机械工程学报，2013,49(4):168-173.
    [9]刘京广.卧螺离心机流场数值模拟及转鼓锥角研究[D].吉林：吉林大学，2011.
    [10]董辉.卧螺离心机流场分析与固液分离性能研究[D].青岛：山东科技大学，2017.
    [11]周成溪.三相分离离心机系统在油泥水处理中的应用[J].工业用水与废水，2016,47(6):54-56.
    [12]王森哲，张永政，李文俊，等.碟式分离机转鼓应力的无线测试与仿真对比研究[J].机电工程，2017,34(7):740-744.
    [13]王保军，李强，徐健.卧螺离心机在硫泡沫固液分离中的应用[J].流体机械，2018,46(11):57-59.
    [14]代朝辉.卧螺离心机转鼓结构参数对其分离性能的影响[J].工矿自动化，2017,43(7):57-61.