高落差ポンプ水車の負荷遮断時における異常軸スラストの原因と対策

概要

論文の詳細を見る
In the load rejection test of Kazunogawa Pumped-Storage P. S, an abnormal axialthrust occurred in a high-head reversible pump-turbine (412MW and 714m effective head). The rotating parts of 600 tons including a runner moved 4 mm upward in the axial direction. After taking several countermeasures, this machine is now operating without any problem, but the cause and the mechanism of abnormal axial thrust are not yet clear, though such a transient up-thrust has long been known. The present study is thus aimed to determine reason why such abnormal axial thrust is caused at transient operation and how to reduce abnormal thrust. Here adopted is a theoretical approach which has been proved to give satisfactory results in predicting pump thrust. The calculated results under various operating conditions revealed the cause and detailed mechanism together with some effective countermeasures against abnormal axial thrust.
日本工業出版の論文
2004-06-10