| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a hydraulic machine avoiding noxious vibration mode due to a guide vane and a runner, suppressing the occurrence of vibration, being high in reliability, and improving a relative position relation between a stay vane and the guide vane and excellent in manufacturability and maintainability. <P>SOLUTION: In a Francis type pump water turbine where long vanes 5 and short vanes 6 are alternately situated, the number of guide vanes 7 situated on the outer peripheral side of a runner 2 is set to the odd number, for example, 19 vanes. <P>COPYRIGHT: (C)2004,JPO&NCIPI</p> |
