斜流ポンプの流れと特性に及ぼす斜流角の影響

概要

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In order to understand the influence of the cone angle of an impeller on pump characteristics at partial capacity, experiments were carried out for three impellers prepared with different cone angles. The results showed that the onset capacities of the suction and discharge inverse flow were larger at the impeller with a smaller cone angle, and that the impeller with a medium cone angle had stable H-Q characteristics, while the other two impellers had unstable ones. Measuring the velocity distribution upstream and downstream of the impeller and carrying out the flow visualization by the oil film method, the relation between the flow pattern change at partial capacity and the unstable H-Q characteristics was clarified. The influences of the cone angle on the flow pattern change were also discussed.
社団法人日本機械学会の論文
1989-07-25