To provide hydraulic machinery capable of suppressing water pressure pulsation resulting from an autorotation mode and an expansion and contraction mode of a whirl to be generated on a downstream side of a runner and a method for operating the same.
According to one embodiment, hydraulic machinery comprises a runner which converts energy which pressure water has into rotation energy, in which the runner comprises: a plurality of blades arranged like a ring; a crown which is connected to the blades from an upper side and has a lower end surface at a position surrounded by the blades; and a band connected to the blades from a lower side. The machinery further comprises: a main shaft which transmits the rotation energy of the runner to a dynamo; and a draft tube which is located on a downstream of the runner and into which water which drives the runner flows. The machinery further comprises a columnar member which is arranged on a rotary shaft of the main shaft at a lower part of the crown and has a diameter smaller than that of the lower end surface of the crown.
KUROKAWA TOSHIFUMI
FUJITA TAKASHI
| JP2006029227A | 2006-02-02 | |||
| JPS5425947U | 1979-02-20 | |||
| JPH10196509A | 1998-07-31 | |||
| JPS5813171A | 1983-01-25 | |||
| JP2006029260A | 2006-02-02 | |||
| JPS62251474A | 1987-11-02 | |||
| JPS62170U | 1987-01-06 | |||
| JP2003013836A | 2003-01-15 |
| US20070009352A1 | 2007-01-11 |
Yasukazu Sato
Yasushi Kawasaki
Takeshi Sekine
Akaoka Akira
Jie Yamanoi
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