中文摘要：

为了系统评价导向叶片结构对输气站场用旋风管分离性能的影响,计算模拟了叶片数量为3~15、叶片厚度为2~12 mm的弧形、梭形、楔形3种不同叶片形状下旋风管的分离效率和压降。结果表明：旋风管的压力和切向速度均沿轴线对称分布,中心涡核处的压力最低,而叶片出口处的切向速度最大为18 m/s;随叶片数量的增加,旋风管的分离效率和压降增大,当叶片数量大于4时分离效率的增长较缓慢,但均能除尽粒径大于4μm的颗粒,而增加一个叶片导致压降增加2 000 Pa;叶片厚度增加,分离效率和压降增大,尤其是对粒径为1.5μm的颗粒,旋风管的分离效率从2 mm的44.18%增加到12 mm的96.17%;楔形叶片旋风管的分离效率最大,可除尽粒径大于3μm的颗粒,压降也最大,比弧形叶片约增加4 500 Pa。

英文摘要：

The separation efficiency and pressure drop of cyclone tube with different guide vane structures which number of vanes ranged from 3 to 15, thickness of vanes ranged from 2 to 12 mm, and three different shapes of guide vanes called arc-shaped, spindle-shaped and wedged-shaped have been simulated. Multiple conclusions have been received. Firstly, the pressure and tangential velocity of cyclone tube distribute symmetrically along the axial direction. The lowest pressure locates at the center vortex core area while the highest velocity is 18 m/s located at the outlet of guide vanes. Secondly, the separation efficiency and pressure drop increase with the increasing number of guide vanes. But its rising tendency of separation efficiency becomes gently when the vanes are more than 4 that all of whom can separate particles bigger than 4μm. On the other hand, one more vane means 2 000 Pa pressure drop rising. Thirdly, if the thickness of vanes increases, the separation efficiency and pressure drop grow up. Especially to the particles which diameters are around 1.5 μm, for the separation efficiency increase from 44.18%（2 mm） to 96.17%（12 mm）. Fourthly, cyclone tube with wedge-shaped vanes that can separate particles bigger than 3 μm has the highest separation efficiency and pressure drop that adds up to 4 500 Pa compared to arc-shaped vanes.