Penstock fish diversion system

Details Penstock fish diversion system Penstock fish diversion system

1983-11-22

1984-12-18

Husar, C. J.

Hydraulic and earth engineering

Fluid control, treatment, or containment

Flow control

405 78, 405127, 210154, 210162, 119 3, E02B 508, E02B 808, A01K 6100, B01D 3300

Patent

active

044888350

ABSTRACT:
A fish diversion system for a penstock housing a hydroelectric turbine employs large area screens to shunt fish to a bypass conduit above the turbine. The screens are disposed generally lengthwise of the penstock and the upstream screen is inclined upwardly at a shallow angle to maximize water flow velocity along the upstream screen while minimizing the approach velocity normal to the screens. Fish and debris are thus swept along the screens rather than impinged on them. The bypass conduit is sized and positioned to minimize bypass water flow volume while maintaining sufficient volume and velocity to discharge fish from the upper portion of the penstock. The upstream screen can be tiltable for cleaning.

REFERENCES:
patent: 2169249 (1983-03-01), Holmes et al.
patent: 2826897 (1958-03-01), Vinsonhaler et al.
patent: 4064048 (1977-12-01), Downs et al.

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