Startup method of francis turbine and francis turbine

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United States of America Patent

PATENT NO 11566597
SERIAL NO

17351366

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A startup method of a Francis turbine according to an embodiment includes: a first rotation-speed increasing step in which a rotation speed of the runner is increased by opening the guide vane at a first opening; a second rotation-speed increasing step in which the increase in the rotation speed of the runner is accelerated by opening the guide vane at a second opening that is larger than the first opening after the first rotation-speed increasing step; and a rotation-speed regulating step in which the rotation speed of the runner is regulated to a rated rotation speed by opening the guide vane at a no-load opening after the second rotation-speed increasing step. The first opening is an opening that is half or less than the no-load opening.

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Patent Owner(s)

Patent OwnerAddress
KABUSHIKI KAISHA TOSHIBAKANAGAWA KANAGAWA
TOSHIBA ENERGY SYSTEMS & SOLUTIONS CORPORATION72-34 HORIKAWA-CHO SAIWAI-KU KAWASAKI-SHI KANAGAWA 2120013 JAPAN

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Nakazono, Masahiko Kawasaki Kanagawa, JP 9 8
Shima, Ryosuke Kawasaki Kanagawa, JP 2 0

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