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分别运用试验、理论分析等方法,对对旋轴流局部风机二级区域进行了研究。使用动态压力传感器测量压力脉动,运用信号分析方法对信号做了详细分析,同时结合理论,对流场细节进行了讨论。揭示了流场内压力脉动引起的二级叶轮工作环境恶化是各种故障产生的根本原因。
By using the methods of experiment and theoretical analysis respectively, the secondary fan of the local axial fan is studied. The dynamic pressure sensor is used to measure the pressure pulsation. The signal analysis method is used to analyze the signal in detail. At the same time, the details of the flow field are discussed in combination with the theory. It is revealed that the deterioration of the working environment of the two-stage impeller caused by the pressure pulsation in the flow field is the root cause of various faults.