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竖井进流水平旋流式内消能工是一种泄流能力强、消能率高、可节省总工程投资的新型消能工。运用这种新型消能工将施工导流洞改建为永久泄洪洞是解决高坝水力设计中泄水建筑物的安全和消能问题的新途径。本文对该种消能工的空化特性进行了试验研究,给出了旋流器收缩比为0.35时的空化基本特性,并提出在起旋器升坎后直接补气是减免起旋器升坎后空化的一项有效措施。
Vertical shaft inflow swirling internal energy dissipater is a new discharge capacity, high energy dissipation, saving the total project investment of new energy dissipater. The use of this new energy dissipater to rebuild the diversion tunnel into a permanent flood discharge tunnel is a new way to solve the safety and energy dissipation problems of discharged structures in high dam hydraulic design. In this paper, the cavitation characteristics of this kind of energy dissipater were studied. The basic characteristics of cavitation were given when the shrinkage ratio of the cyclone was 0.35. L ascended the cavitation after an effective measure.