叶片组结构对气液旋风分离器性能的影响  

Effect of the blade group structure on the gas-liquid cyclone separator’s performance

作　　者：雷英庶 陈启东 张斌[2] LEI Ying-shu;CHEN Qi-dong;ZHANG Bin(School of Mechatronic Engineering,China University of Mining and Technology,Xuzhou 221008;School of Mechanical Engineering,Changshu Institute of Technology,Changshu 215500)

机构地区：[1]中国矿业大学机电工程学院,江苏徐州221008 [2]常熟理工学院机械工程学院,江苏常熟215500

出　　处：《机械设计》2020年第7期68-73,共6页Journal of Machine Design

基　　金：国家自然科学基金资助项目(51705037)。

摘　　要：旋风分离器圆柱内的叶片组结构影响旋风分离器的速度场、压降及收集效率。利用雷诺应力模型(RSM)和离散相模型(DPM)分别对加入叶片组前后的旋风分离器模型进行了流场、压降及分离效率的计算分析。结果表明:加入叶片组结构后在叶片两侧轴向速度靠近中心侧增大和靠近壁面侧减小;对比发现溢流管口处的叶片直径为G=60,70,80 mm的叶片组,随着叶片直径G的增大,在中心区域准强制涡内切向速度增大,在自由涡内切向速度出现了大波动。The blade group structure in the cylinder of the cyclone separator affects its velocity field,pressure drop and collection efficiency. In this article,both the Reynolds stress model( RSM) and the discrete phase model( DPM) are adopted to calculate the flow field,pressure drop and separation efficiency of the cyclone-separator model before and after the blade group structure is applied. The results show that the axial velocity on both sides of the blade increases near the central side and decreases near the wall side after the blade group is applied. The analysis is conducted on the blade group structures whose diameters of the overflow pipe at the overflow pipe are G = 60,70,80 mm respectively. As the diameter G increases,the tangential velocity in the quasi-forced vortex increases at the central section,and the tangential velocity in the free vortex fluctuates greatly.

关 键 词：旋风分离器 叶片组结构 压降 分离效率 

分 类 号：O355[理学—流体力学] TH48[理学—力学]