Hydraulic and earth engineering – Fluid control – treatment – or containment – Extracting power from moving fluid
Patent
1991-12-17
1993-06-29
Taylor, Dennis L.
Hydraulic and earth engineering
Fluid control, treatment, or containment
Extracting power from moving fluid
60370, 60398, 290 53, 290 54, E02B 900, E02B 908, F03B 1312
Patent
active
052228339
ABSTRACT:
A gravitational window shutter in a water gate for a system for harnessing power from current flow or tidal movement in a of water is disclosed. The gate is formed with a door for closing the port through which the water may flow. The door has a window in an upper portion thereof which is closed by a rotatable shutter. The shutter opens before the door, allowing a flow of water through the window, which reduces the drag on the door. The door is then able to open more rapidly. A gravitational closure causes the shutter and door to close. The gravitational closure is formed by a counter weight on the shutter. An improved configuration of the chambers is also disclosed. The chambers have an upper portion of a rectangular configuration with a larger volume to increase the volume of air flowing through the system and a lower portion of a cylindrical configuration to reduce the hydraulic losses due to vortices during water inflow and outflow.
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Northeastern University
Ricci John
Taylor Dennis L.
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