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采用螺线型旋风分离器实验装置,考察了排气管插入深度、螺线通道延伸段对螺线型旋风分离器分离性能的影响。结果表明,随着排气管插入深度的增加,螺线型旋风分离器的分离效率先增后减,当排气管的插入深度与进气口高度相等时,分离效率最高;添加螺旋通道延伸段,可在压力降不变的情况下有效提高分离器的分离效率。在本实验条件下,与普通螺线型旋风分离器相比,在相同压力降时,改进后的螺线型旋风分离器分离效率可提升6%~10%,能除尽10μm以上的颗粒,对2μm以下的超细颗粒也有较好的捕集效果。基于边界层分离理论,建立了螺线型旋风分离器的粒级效率计算公式,计算值与实验数据吻合性较好。
The influence of the insertion depth of the exhaust pipe and the extension of the helical channel on the separation performance of the spiral cyclone was investigated by using a spiral cyclone experimental apparatus. The results show that with the increase of the depth of the exhaust pipe, the separation efficiency of the spiral type cyclone increases first and then decreases. When the depth of the exhaust pipe is equal to the height of the inlet, the separation efficiency is the highest. Section, which can effectively improve the separation efficiency of the separator under the condition of the same pressure drop. Under the experimental conditions, compared with the conventional helical cyclone, the improved helical cyclone separation efficiency can be increased by 6% -10% at the same pressure drop, and the particles can be divided by more than 10 μm, For 2μm or less ultrafine particles also have a better capture effect. Based on the theory of boundary layer separation, a formula for calculating the particle size efficiency of a spiral-type cyclone is established. The calculated values are in good agreement with the experimental data.