小型离心压缩机中非稳定流动的测量及分析

Measurement and Analysis of Non-Steady Flow in Minor Centrifugal Compressor

用热线风速仪、磁带记录仪及CF-920动态信号分析仪组成测量及分析系统,对小型离心压缩机中的不稳定流动进行了测量,给出了转速及扩压器半径对不稳定流动的影响以及不稳定流动的波形及其随流量的变化。

Using a measuring system which consists of hot wire, Type record and CF-920 analysis instrument, some results are presented for measurement of non-steady flow. The effects of impeller rotating speed and radial of vaneless diffuser to rotating stall are studied. The results show emphatically that rotating stall has different behaviors for different radial of vaneless diffuser.