关键词: fluid delivery;centrifugal pump;regenerative pump

Abstract: The study on high-speed centrifugal-regenerative pumps with an inducer (HCRP) is carried
out. Thecombined structure of inducer, centrifugal impeller, and regenerative impeller is
presented, and a theoretical parallelcombinatorial hydraulic design method is investigated.
The comparative experimental results show that efficiency insmaller capacity region, head
coefficient and efficiency in larger capacity region of HCRPs is few lower, much higherand
lower than those of high-speed centrifugal pumps, respectively, anci that the suction
performance of HCRPs isdetermined only by inducer. HCRPs can be more suitably applied to
deliver small-capacity high-head liquids inchemical and petrochemical industries.

Key words: fluid delivery, centrifugal pump, regenerative pump