| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a water turbine runner capable of holding an optimal operation state of a water turbine, by reducing influence of a head variation. <P>SOLUTION: According to the embodiment, this water turbine runner includes an inside runner having a plurality of first blades, and an outside runner attachable-detachable to the inside runner and having a plurality of second blades. The inside runner can also be attached-detached to two kinds or more of outside runners different in a shape of the second blades. The two kinds or more of outside runners also include a first outside runner designed so as to be used when a head of flowing-in water is minimum, and a second outside runner designed so as to be used when the head of the water is maximum. <P>COPYRIGHT: (C)2013,JPO&INPIT |
