摘要：采用五孔探针测试技术及相应的计算机数据采集与处理系统，测定了旋转直流内循环式旋风分离器的三维流场分布。对所测流场分4个区域进行了分析讨论，并对内循环气量进行了衡算。结果表明该新型旋风分离器设计合理，结构有利于气流中颗粒的分离。

关键词：旋风分离器；内循环；流场

Abstract：By employing the five - hole exploring needle technique and its computer systemfor data collecting and processing, the flow field of rotary uniflow&inner - recycle cyclone sepa-rator was experimentally studied in this paper.The measured flow field was respectively discussedand analyzed in four different regions, and flow rate mass balance of the inner - recycled gasstream was conducted.The result reveals that the design of the new type of cyclone separator ispracticable and its structure is good for the separation of particles frorn gas stream.

Keywords ：cyclone separator; inner - recycle; flow field.