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An energy recovery device including a central compartment in which a turbine is arranged and which is positioned between at least first and second compartments is described. Liquid flows between the compartments via side valve systems and a central throttling channel. One specific feature is that an

An energy recovery device including a central compartment in which a turbine is arranged and which is positioned between at least first and second compartments is described. Liquid flows between the compartments via side valve systems and a central throttling channel. One specific feature is that an adjustable stopper is arranged substantially at the throttling channel. The device may include a second turbine that controls head losses and makes it possible to feed the main turbine located above, in the vortex.

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1. A device for recovering motion energy in the form of electrical energy comprising: a vessel with a plurality of peripheral compartments and a central compartment positioned between first and second compartments of the peripheral compartments, and having a vertical main axis (A) at rest and at lea

1. A device for recovering motion energy in the form of electrical energy comprising: a vessel with a plurality of peripheral compartments and a central compartment positioned between first and second compartments of the peripheral compartments, and having a vertical main axis (A) at rest and at least one side wall positioned between a plurality of the peripheral compartments and the central compartment, suitable for oscillating about at least one axis perpendicular to the main axis under the effect of the motion, the vessel containing a liquid (F) which, when the vessel oscillates, flows between the first and second compartments via the central compartmenta plurality of valve systems arranged at the location of the side wall with each situated for transferring liquid from one of the peripheral compartments to the upper portion of the central compartment and from the lower portion of the central compartment to at least one other of the peripheral compartments, when the vessel is inclined, the central compartment comprising an upper portion and a lower portion separated by an intermediate partition provided with a channel forming a throttling zone for the flow of the liquid from the upper portion to the lower portion, and substantially at the level where an adjustable stopper is arranged; and,at least one first turbine coupled with an AC generator and arranged in the upper portion of the central compartment, wherein the adjustable stopper comprises a secondary turbine. 2. The device according to claim 1, wherein the adjustable stopper comprises a diaphragm. 3. The device according to claim 2, wherein, on the intermediate partition, the channel is situated away from the axis of rotation of the first turbine. 4. The device according to claim 3, wherein the adjustable stopper is situated away from the axis of rotation of the first turbine. 5. The device according to claim 4 further comprising at least one intermediate chamber for distributing the transferred liquid and positioned between the central compartment with which it is connected via a plurality of openings which may be concomitantly open, for transferring liquid, and at least some of the peripheral compartments, from which the intermediate chamber is separated by the side wall and connected with a plurality whereof via at least some of the valve systems which may also be concomitantly be open for those supplying the intermediate chamber with liquid. 6. The device according to claim 5, wherein the intermediate chamber is closed onto itself about the central compartment and can be connected to all the valve systems and/or all the openings. 7. A method for recovering, in the form of electrical energy, oscillation motion energy comprising: a. a vessel containing a liquid (F),a central compartment positioned between first and second compartments;an intermediate partition positioned between an upper portion and a lower portion and provided with a channel forming a throttling zone for the flow of liquid from the upper portion to the lower portion,at least one first turbine coupled with an AC generator is arranged in the upper portion,the central compartment having at least one side wall, wherein first and second valve systems are arranged such that some of the valves, situated, at rest, at a higher level of elevation than the other valves, move, during the oscillations, liquid from the first and second compartments to the upper portion of the central compartment, the further valves then moving liquid from the lower portion of the central compartment to the first and second compartments,b. under the effect of the motion, the vessel is oscillated about at least one axis perpendicular to a main axis (A) of the vessel, vertical at rest, the liquid (F) then flowing between the first and second compartments, via the central compartment: where it rotates the first turbine,and in the upper portion a rotational motion of the liquid is created such that the particles of this liquid have different velocities in relation to each other, at different radial differences with respect to a central axis (A) of the vessel, vertical at rest. 8. The method according to claim 7, wherein: by a control loop, at least the valves moving liquid from first and second compartments to the upper portion of the central compartment are controlled in respect of opening/closing and/or flow rate,and/or the valves are provided with flaps directing, in the open position, the liquid flow so as to inject the flow into the central compartment with a velocity tangential to the corresponding side wall of the central compartment, with an angle α with respect to the normal N to the side wall of at least 45°. 9. The method according to claim 8, wherein substantially at the throttling channel, an adjustable stopper comprising a secondary turbine is arranged, and the head of the secondary turbine is varied to optimize, above, the level of liquid available for the main turbine. 10. The method according to claim 9, wherein substantially at the throttling channel an adjustable stopper comprising a movable-wall diaphragm is arranged, and the opening and closing of the stopper are adapted to optimise, above, the level of liquid available for the main turbine. 11. The method according to claim 10 wherein liquid intended to flow from a plurality of peripheral compartments to the central compartment flows via at least one intermediate chamber collecting the liquid from these various peripheral compartments, and the liquid is then moved from this intermediate chamber to the central compartment via a plurality of passages open in the intermediate chamber.