Low head water turbine

Details Low head water turbine Low head water turbine

2005-04-12

2005-04-12

Verdier, Christopher (Department: 3745)

Rotary expansible chamber devices

Positively actuated vane

Fluid biased

C415S003100, C415S141000, C415S185000, C415S186000, C415S125000, C415S906000

Reexamination Certificate

active

06877968

ABSTRACT:
A low head water turbine comprising a runner having a cylindrical outer surface and a plurality of similar blades similarly pivotably secured along their inner sides to the outer surface of the runner so as to pivot in the direction of rotation of the runner between a closed position lying adjacent the outer surface of the runner and an open position at an angle thereto. A housing having end walls and a rounded side wall extending therebetween, completely encases the runner and its blades. The runner is eccentrically mounted to end walls of the housing for rotation about a horizontal axis so that the cylindrical outer surface is spaced closer to an upper portion of the housing side wall and farther from a lower portion. A water inlet opening is located in a lower, forward portion of the housing, below the axis of rotation of the runner. A water outlet opening is located in a lower, rearward portion of the housing. During operation of the turbine, the blades will be constricted by the side wall of the housing and thereby moved to the closed position as they approach and pass the upper portion of the housing side wall, and will move to the open position under force of gravity, water and centrifugal force acting on them as they move below the axis of rotation of the runner to the lower position, all the time the housing side wall acting on the outer sides of the blades.

REFERENCES:
patent: 109335 (1870-11-01), Morgan
patent: 227576 (1880-05-01), Read
patent: 3983404 (1976-09-01), Sherrard
patent: 4263516 (1981-04-01), Papadakis
patent: 4923368 (1990-05-01), Martin
patent: 6554596 (2003-04-01), Patterson et al.

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