Power plants – Pressure fluid source and motor
Patent
1996-08-23
1999-07-13
Nguyen, Hoang
Power plants
Pressure fluid source and motor
60398, 60495, 60496, 417331, 290 42, 290 53, F16D 3102, F03B 1310
Patent
active
059210826
ABSTRACT:
A hydro-buoyant electrical power generating plant is provided which generates electricity from a source of hydraulic pressure. The energy that pressurizes the hydraulic fluid is derived from movements of a crane-like class II lever that has its fulcrum fixed to a stationary land mass so that the fulcrum's position is fixed relative to the lever's opposite "movable" end where the applied load is established. The movable end of the lever is attached to an "applied force vessel" that alternatively can be filled with water (or other liquid) so as to sink due to gravity, and then can be evacuated of water so as to rise due to buoyancy. When the applied force vessel is at its position of greatest elevation, the interior chamber of the vessel initially would be filled with air, typically at atmospheric pressure. Valves mounted to the bottom and top of the vessel are then opened to allow liquid to enter the vessel from beneath the vessel, thereby allowing the vessel (and its attached lever) to sink to its point of least elevation. At its uppermost position, the vessel of the preferred embodiment is floating, and thereby displacing its own weight. While the vessel is sinking, the mechanical motion of the attached lever creates power that will be used to drive linear hydraulic actuators (e.g., double acting single ended actuators), that in turn will be used to displace and pressurize a hydraulic fluid. This hydraulic fluid can then be taken directly to a hydraulic motor which can be used to drive an electrical generator, or the pressurized fluid can be stored indefinitely in hydraulic accumulators. Once the applied force vessel reaches its bottom-most position, the valves below and above the vessel are closed, and multiple submersible pumps attached around the vessel's bottom surface periphery begin to pump the liquid that is presently contained within the vessel out to the surrounding medium (i.e., the infinite liquid). As the liquid is pumped out of the vessel, the vessel becomes buoyant, and a buoyancy stroke can now be started and the entire lever and vessel structure begins to rise in the vertical direction. While the vessel is rising, the mechanical motion of the attached lever creates power that again will be used to drive the double acting linear hydraulic actuators.
REFERENCES:
patent: 4563591 (1986-01-01), Jones
patent: 4684815 (1987-08-01), Gargos
patent: 4931662 (1990-06-01), Burton
patent: 5426332 (1995-06-01), Ullman et al.
patent: 5440176 (1995-08-01), Haining
Davidson James P.
Gribbell Frederick H.
Nguyen Hoang
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