Wicket gate

Details Wicket gate Wicket gate

1990-12-14

1993-07-20

Bertsch, Richard A.

Rotary kinetic fluid motors or pumps

Working fluid passage or distributing means associated with...

Specific casing or vane material

415163, 2988971, 264273, F01D 514

Patent

active

052288307

ABSTRACT:
This invention relates to an improvement in an apparatus for directing the flow of water from the penstock to the vanes of a hydraulic turbine, generally referred to as a wicket gate, and a method for making the improved wicket gate. The improved wicket gate comprises a rotatable planar body made either of a high-strength plastic material or metal, onto which a viscoelastic material is affixed. The improvement lies in the application of the viscoelastic material to the rotatable planar body in such a way that the viscoelastic material becomes an integral component of the rotatable planar body. This improvement extends the maintenance life cycle by reducing marine growth, erosion and pitting caused by cavitation.

REFERENCES:
patent: 3357850 (1967-12-01), Baker
patent: 3588267 (1971-06-01), Wikinson
patent: 3829238 (1974-08-01), Speck
patent: 3876327 (1975-04-01), Lobanoff
patent: 4120602 (1978-10-01), Megnint
patent: 4946347 (1990-08-01), Otto
"Hydropower Engineering", Mayo, Carson, and Sheldon, Prentice-Hall, 1984, pp. 101-147 and 164-199.

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