Rotary kinetic fluid motors or pumps – With means for controlling casing or flow guiding means in... – Natural fluid current force responsive
Patent
1978-07-20
1980-07-22
Powell, Jr., Everette A.
Rotary kinetic fluid motors or pumps
With means for controlling casing or flow guiding means in...
Natural fluid current force responsive
415 7, 416 41, 416189, F03D 704, F03D 104
Patent
active
042137349
ABSTRACT:
A reaction-type turbine provided with an output shaft coupled to a power generator, such as an electric generator, and having a plurality of variable-pitch flexible impeller blades, or sails, mounted between the periphery of the output shaft and a concentric tubular shroud rotatable in unison with the output shaft. The pitch of the flexible impeller blades or sails is varied by a centrifugally-actuated pitch controlling unit such that the output shaft has a constant angular velocity irrespective of variations in the velocity of the fluid flowing through the turbine. For actuation by wind, the turbine is mounted on a rotatable platform which is automatically oriented in the direction of the prevalent wind by a servo system controlled by a wind direction detecting device. The mass of air flowing through the turbine is automatically controlled as a function of the wind velocity by an appropriate throttling mechanism controlled by a wind velocity detector. For actuation by water flow, the turbine is mounted such as to be retractable and extendable relative to an appropriate support hull.
REFERENCES:
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patent: 725829 (1903-04-01), Decker
patent: 1186289 (1916-06-01), Dalen
patent: 1333675 (1920-03-01), Pickett
patent: 2133853 (1938-10-01), Feige
patent: 2374125 (1945-04-01), Peirce
patent: 2563279 (1951-08-01), Rushing
patent: 4066911 (1978-01-01), Sarchet
patent: 4159191 (1979-06-01), Graybill
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