叶轴形状对旋风子性能影响的研究

Research Findings Concerning the Effect of Axle Shapes on the Performance of Cyclone Separators

对一种高浓度盐雾分离装置——旋风子进行研究,并对3种叶轴形状的旋风子进行了额定工况下的数值模拟,模型一为叶轴形状为空心圆柱形、模型二为细长实心圆台形、模型三为短粗实心圆台形,给出了相应模型的阻力特性和不同颗粒直径下的分离效率特性。同时在专门风洞实验台上进行了3种模型的阻力和分离效率特性实验,实验结果表明模型二分离效率较稳定,且阻力损失相对也较小,总体性能优于其它两种形式。将实验结果与数值模拟结果进行比较,吻合情况良好,为进一步的研究提供了参考资料。

The authors have studied a kind of high-concentration salt-mist separating device-cyclone separator,and numerically simulated under rated operating conditions three models of cyclone separators featuring three axle shapes,namely,1.hollow cylinder shape,2.slim solid truncated cone shape and 3.podgy solid circular truncated cone shape.The drag force characteristics of the corresponding models and their separation-efficiency characteristics at different particle diameters have been given.Meanwhile,on a specialized wind tunnel test rig,drag force and separating efficiency characteristics of the three models were also tested.The test results show that model No.2 has a relatively stable separating efficiency and a comparatively small drag-force loss with its overall performance being better than that of the other two models.When comparing the test results with the numerical simulation ones,one can find that they are in good agreement,thus providing reference data for further investigations.