近年来,通过在45GP130高压比增压器和320P 增压器上对双列叶栅扩压器的试验研究,作者提出了一些对双列叶栅扩压器的规律性认识。在设计试验中发现。两列叶栅匹配位置、间隙、重叠度、扩压器的中径、弦长比诸参数对压气机性能影响较大。对装有双列叶栅扩压器的320P_4增压器作了与16V280Z 柴油机的匹配试验。试验结果证明,双列叶栅在增压器上的应用是有效的。目前,串联技术应用于离心式压气机叶片扩压器设计,尚无一套成熟的设计方法。本文提供的试验数据可以作为进一步研制双列叶栅扩压器的参考和借鉴。另外,文中还介绍了双列叶栅扩压器的机理、双列与单列叶栅扩压器噪声对比试验。 In recent years, through the experimental study of double row cascade diffuser on 45GP130 high pressure ratio supercharger and 320P supercharger, the author proposed some regularity understanding of double cascade diffuser. Found in design tests. The matching position of two cascades, the gap, the degree of overlap, the diameter of the diffuser, the chord length parameters greatly affect the performance of the compressor. 320P_4 turbocharger equipped with double row cascade diffuser with 16V280Z diesel engine matching test. The test results show that the application of double row cascade on supercharger is effective. At present, tandem technology is applied to centrifugal compressor blade diffuser design, there is no set of mature design methods. The experimental data provided in this paper can be used as a reference for further development of double row cascade diffuser. In addition, the paper also introduces the mechanism of double row cascade diffuser, noise contrast test of double row and single row cascade diffuser.