Cost-effectiveness of a standard and a modified Stairmand high-efficiency type cyclone was compared at various inlet gas velocities. The modified design was obtained by replacing the roof of the standard design with a helical roof. Experiments were conducted by both standard and helical roof designs at the same operating conditions. Results showed that helical roof leads to reduced pressure drop in cyclones while having a negative impact on particle collection efficiency. Reductions in pressure drop can reach up to 30%, while particle collection efficiency is reduced by up to 8% simultaneously. Overall, the treatment cost of a cyclone separator can be reduced by 14.1–20.8%. Results indicated that helical roof design cyclones can be used to reduce overall treatment cost by cyclone separators.

中文翻译：

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螺旋屋顶对楼梯间高效旋流器性能影响的试验研究

在各种入口气体速度下，比较了标准型和改进型 Stairmand 高效型旋风分离器的成本效益。修改后的设计是通过用螺旋屋顶替换标准设计的屋顶获得的。在相同的操作条件下，通过标准和螺旋屋顶设计进行了实验。结果表明，螺旋顶会导致旋风分离器中的压降降低，同时对颗粒收集效率产生负面影响。压降最多可降低 30%，同时颗粒收集效率最多可降低 8%。总体而言，旋风分离器的处理成本可降低14.1-20.8%。结果表明螺旋屋顶设计的旋风分离器可用于降低旋风分离器的整体处理成本。