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本文详细介绍了一种用再循环旁通槽扩大压气机工作范围的装置,该装置在压气机平台试验和柴油机台架试验上的结果表明,再循环旁通槽能够使喘振线大幅度向小流量方向移动,阻塞线向大流量方向移动。进一步的试验研究表明,再循环旁通槽在压气机进口部分造成了随流量变化而变化的预旋,这种自调节的预旋是它能够扩大压气机工作范围的主要原因之一。
In this paper, a device for expanding the operating range of a compressor with a recirculation bypass is described in detail. The results of the compressor platform test and the diesel engine bench test show that the recirculation bypass groove can greatly increase the surge line Small flow direction of movement, the blocking line to a large flow direction. Further experimental studies have shown that the recirculation bypass groove creates a pre-rotation that varies with the flow rate at the inlet of the compressor. This self-adjusting pre-rotation is one of the major reasons why it can expand the operating range of the compressor.