Process and device for limiting the overspeed of a low head...

Details Process and device for limiting the overspeed of a low head... Process and device for limiting the overspeed of a low head...

F - Mech Eng,Light,Heat,Weapons

03

B

170/39

F03B 15/18 (2006.01) F01D 17/00 (2006.01) F04D 15/00 (2006.01)

Patent

CA 1251144

ABSTRACT OF THE DISCLOSURE This invention relates to a process for limiting the overspeed of a low head hydroelectric generating set with adjustable distributor valve and vanes, such as a bulb generating set with mobile distributor and mobile vanes. It consists in limiting the opening of the distributor for each of the vanes in accordance with the law of limitation merged with a determined law of conjugation vanes/valve assembly in normal operation, said law of conjugation being relative to a pressure head lower than the minimum pressure head, the margin being some percent in rela- tive values.

490967

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