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在多级轴流高压压气机上 ,开展从气动失稳到喘振及退出喘振时对气体压力的动态测量。试验是在多级轴流高压压气机静叶设计角度及中间级引气的情况下进行的。采用高精度、高频响的动态压力传感器 ,高速同步采集板 ,快速A/D采集板和高速处理机相结合 ,借助频谱分析的方法来找出失速 /喘振频率 ,并且找出对应着该频率的各通道之间的相位差 ,分析出失速 /喘振首发级。在试验中运用信号分析方法对叶片排中失速及喘振信号进行数学处理。测量得出的结论是 :在多级轴流高压压气机中 ,失速 /喘振均属于突变型 ;在 n=0 .8时压气机工作于多值区 ;中间级引气将影响失速 /喘振。
In the multi-stage axial high pressure compressor, the dynamic measurement of gas pressure from pneumatic instability to surge and exit surge is carried out. The test was carried out under the design of multi-stage axial high-pressure compressor vanes and the intermediate stage bleed air. Using high-precision, high-frequency dynamic pressure sensor, high-speed synchronous acquisition board, fast A / D acquisition board and high-speed processor combined with the frequency spectrum analysis method to find the stall / surge frequency, and find the corresponding Frequency of the phase difference between the channels, the stall / surge starting level was analyzed. In the experiment, the signal analysis method was used to deal with the stall and surge signal in the blade row. The measurement concluded that in a multi-stage axial-flow high-pressure compressor, stall / surge are all mutant; at n = 0.8, the compressor operates in a multi-value zone; intermediate-stage bleed air will affect stall / Vibration