多年来关于离心泵、轴流泵、混流泵的泵效问题,在国内外文献中均以比转速和流量作为决定性的两个因素。但随着技术的发展,目前对泵效的估算已提出一种新的概念:即在比转速与流量的基础上,补充考虑了泵转速、吸入比转速、口环间隙及水力通道表面粗糙度等因素,从而使泵效的计算更趋于完善。作者以离心泵为例,综述了国外著名学者近年来对泵效率估算经验公式和估算曲线的研究,论证了补充因素在泵效估算中所起到的完善作用。 Over the years on the centrifugal pump, axial flow pump, mixed flow pump pump problem, both in domestic and foreign literature than the speed and flow rate as a decisive two factors. However, with the development of technology, the current estimation of pump efficiency has proposed a new concept: that is, on the basis of specific speed and flow, the pump speed, the specific speed of suction, the clearance of the mouth ring and the surface roughness of the hydraulic passage are taken into consideration Factors, so that the calculation of pump efficiency tends to be perfect. Taking centrifugal pump as an example, the author summarizes the researches on empirical formula and estimation curve of pump efficiency in recent years by famous foreign scholars, and demonstrates the consummation of supplement factor in pump efficiency estimation.