An electricity generating apparatus has a turbine between two vertical water-tight towers on a floating base that may be managed to attain a buoyancy such that the towers protrude above a water surface and the turbine remains below the water surface. One tower has an upward extending air conduit with an air pump driven by wind vanes at an upper region. The turbine is adapted to be driven by both wave motion and by tide currents, and an air manifold beneath the turbine, fed with air from the air pump, feeds air to aid in turning the turbine, which in turn drives a generator in one of the towers.

Provided is a buoyancy engine (10) comprising a support frame (12) and at least two pairs of reciprocating arrangements (14) supported on said support frame (12). Each reciprocating arrangement (14) comprises i) a fluid cylinder (16) operatively filled with a fluid, such as water; ii) a float (20) arranged within the fluid cylinder (16) and defining a reservoir (22) with an exhaust valve (24) located at an upper portion and a charging aperture (26) at a lower portion via which said float (20) is chargeable with air; iii) an air injection assembly (28) comprising a pump (30) and an injection conduit (32), the pump (30) linked to the float (20) so that said pump (30) draws atmospheric air when the float (20) descends and charges said air via the injection conduit (32) when the float (20) ascends; iv) a force multiplier assembly (38) supported on the frame (12) and configured to apply mechanical advantage between the float (20) and the pump (30); and v) a power take-off (40) linked to the float (20) and configured to transfer energy from the float (20) as said float (20) ascends within the cylinder (16). Engine (10) further includes a flywheel (42) arranged on the support frame (12) and coupled to the respective power-take offs (40). In this manner, each pair of reciprocating arrangements 14.1 and 14.2 are opposedly arranged with their floats (20) linked in a reciprocating manner, wherein each air injection assembly (28) is arranged to inject air into the float (20), via the charging aperture (26), of an adjacent reciprocating arrangement (14) of the other pair, to facilitate continuous actuation of the flywheel (42) as the engine (10) operates.

A method for driving a transmission mechanism output power in response to an anticipated fluid-pressure gradient field is provided. The method includes sensing the change of direction of pressure gradient field at a desired location from the different area of the transmission mechanism within fluid. The method further includes constructing fluid-pressure gradient field based upon isolation-fluid apparatus or low-density fluid space installed on a transmission mechanism within fluid.

A method of refurbishing a facility for converting hydraulic energy into electrical energy including the following steps: providing a first cover plate, a second cover plate, a first opening located at an inner head cover, a second opening located at a hub, a third opening located at a runner; connecting the first cover plate to the inner head cover; connecting the second cover plate to the hub, wherein the first cover plate and the second cover plate surround an axis, and a part of an outer surface of the inner head cover, a part of an outer surface of the hub, an inner surface of the first cover plate, and an inner surface of the second cover plate are confining an annular shaped space.

A submerged hydroelectric generator system utilized for providing convenience when generating electrical energy from movement of water through a vertical peg stock. The vertical peg stock includes a first end and a second end, an intake valve disposed on the first end of the peg stock, at least one generator disposed within the peg stock, and an outlet valve disposed on the second end of the peg stock. The outlet valve includes a low frequency sound system, a plurality of aerator devices, and an air vent. The intake valve includes a filter, a valve regulator, and a time valve system. The outlet valve includes a vacuum-generation rotor or a turbofan engine that flushes water out of the peg stock. The submerged hydroelectric generator system also includes the outlet valve having a cuboctahedron shape.

The invention relates to hydraulic systems with constant delivery of fluid under pressure, using continuous balancing of pressures generated by liquid accumulated in a reservoir and coming from a collecting system. The system converts motion of liquid to operate individual high-pressure pumps, which pump water through water pipes from a natural body of water into the reservoir above sea level. A device for pressure conversion of the flow of water coming through the water duct from the reservoir in the consumption energy for the production of useful work. Tanks are at the bottom of the reservoir and connected to high-pressure pumps that pump water at high pressure, and which are equipped with pressure accumulators to normalize the pressure. A buffer vessel at the bottom of water duct, below the reservoir and above the sea level, is equipped with pressure accumulators.

This fin is intended to be installed in a protruding manner inside a discharge pipe of a hydraulic machine. The fin includes a first face which has holes and a second face which is solid. The fin defines by itself, between the first face and the second face, a cavity connecting the outside of the discharge pipe to the holes in the first face.

Provided is a buoyancy engine (10) comprising a support frame (12) and at least two pairs of reciprocating arrangements (14) supported on said support frame (12). Each reciprocating arrangement (14) comprises i) a fluid cylinder (16) operatively filled with a fluid, such as water; ii) a float (20) arranged within the fluid cylinder (16) and defining a reservoir (22) with an exhaust valve (24) located at an upper portion and a charging aperture (26) at a lower portion via which said float (20) is chargeable with air; iii) an air injection assembly (28) comprising a pump (30) and an injection conduit (32), the pump (30) linked to the float (20) so that said pump (30) draws atmospheric air when the float (20) descends and charges said air via the injection conduit (32) when the float (20) ascends; iv) a force multiplier assembly (38) supported on the frame (12) and configured to apply mechanical advantage between the float (20) and the pump (30); and v) a power take-off (40) linked to the float (20) and configured to transfer energy from the float (20) as said float (20) ascends within the cylinder (16). Engine (10) further includes a flywheel (42) arranged on the support frame (12) and coupled to the respective power-take offs (40). In this manner, each pair of reciprocating arrangements 14.1 and 14.2 are opposedly arranged with their floats (20) linked in a reciprocating manner, wherein each air injection assembly (28) is arranged to inject air into the float (20), via the charging aperture (26), of an adjacent reciprocating arrangement (14) of the other pair, to facilitate continuous actuation of the flywheel (42) as the engine (10) operates.

A recirculating hydro-pneumatic impulse turbine including a collector assembly including a central draft tube extending therebelow, the collector assembly including a collector plate having a generally horizontal upper surface and being configured such that the draft tube is in fluid communication with the upper surface, there also being a series of peripherally arranged drive cups about the upper surface. The turbine also includes a drive assembly about the central draft tube, the drive assembly including a fluid inlet at its lower end in fluid communication with the lower end of the draft tube, and a plurality of tangentially arranged outlet nozzles configured at its upper end. The turbine also includes a central air tube with an upper air inlet and a lower air distribution manifold, the manifold including at least one venturi outlet capable of entraining air in the fluid to assist movement of the fluid from the lower end of the drive assembly upwardly to the outlet nozzles. During use, fluid jets that form at the outlet nozzles engage with the drive cups to generate relative rotation between the outlet nozzles and the drive cups about a vertical axis, the relative rotation capable of providing useful work, with fluid subsequently flowing from the drive cups across the upper surface of the collector plate to the draft tube, down the draft tube where the fluid enters the fluid inlet of the drive assembly for entrainment with air and recirculation to the outlet nozzles.

The present invention relates to a power generation apparatus using gas buoyancy. According to an embodiment of the present invention, disclosed is a power generation apparatus using gas buoyancy configured such that a gas discharge pipe that receives gas through an inlet provided adjacent to the central axis of an impeller and discharges the gas through an outlet provided in the space between a plurality of blades is installed so as to correspond to the space between the plurality of blades, and the impeller and a rotary shaft are rotated on the basis of the buoyancy generated by the gas discharged through the gas discharge pipe.