遠心ポンプ羽根車のタンデム翼化と気液混相時の揚水性能に関する基礎研究

概要

論文の詳細を見る
It is known that a head breakdown of centrifugal pumps in a two-phase flow occurs at a gas/liquid ratio less than ten percent, due to gas accumulations in the impeller. If these accumulations could be evacuated by use of an impeller with multiple tandem blades, two-phase flow pumps might be operated at a higher gas/liquid ratio. Tests to examine the effects of a tandem-bladed impeller on the pump performance in single-phase and two-phase water/ air flows are described. Experimental results in comparison with results of an unsplit impeller thow that there is no difference of the pump performance in a single-phase flow between both impellers, and a two-phase head degradation in a flow region with elongated bubbles is improved at large water flow rates.
一般社団法人日本機械学会の論文
1989-04-25