Adjustable draft tube

Details Adjustable draft tube Adjustable draft tube

1984-10-12

1986-07-15

Look, Edward K.

Power plants

Pressure fluid source and motor

Utilizing natural energy or having a geographic feature

290 52, 290 54, F16D 3102

Patent

active

045998540

ABSTRACT:
An adjustable draft tube is disclosed for a hydraulic turbine installation. The draft tube includes a pair of fabricated box piers which are positioned in a tailwater with the turbine outlet disposed between the piers. The piers are anchored to a tailwater floor and a powerhouse foundation wall. A roof is provided extending between opposing surfaces of the piers with an edge of the roof pivotally secured to the piers above the turbine outlet. The roof is pivotable between a first position with a downstream edge of the roof disposed beneath a predetermined low tailwater elevation and a second position with the downstream edge disposed between the low tailwater elevation and a predetermined high tailwater elevation.

REFERENCES:
patent: 2713643 (1955-07-01), Rheingans
patent: 3582667 (1971-06-01), Mayo
patent: 4345159 (1982-08-01), Gutierrez-Atencio

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