FR2467997A1 - Wave power machine - uses telescopic hydraulic column to support levers with float and pump at opposite ends, to pump water to drive water turbines - Google Patents
Wave power machine - uses telescopic hydraulic column to support levers with float and pump at opposite ends, to pump water to drive water turbines Download PDFInfo
- Publication number
- FR2467997A1 FR2467997A1 FR7926372A FR7926372A FR2467997A1 FR 2467997 A1 FR2467997 A1 FR 2467997A1 FR 7926372 A FR7926372 A FR 7926372A FR 7926372 A FR7926372 A FR 7926372A FR 2467997 A1 FR2467997 A1 FR 2467997A1
- Authority
- FR
- France
- Prior art keywords
- pump
- float
- support
- column
- pendulum
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B13/00—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
- F03B13/12—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy
- F03B13/14—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy
- F03B13/16—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy using the relative movement between a wave-operated member, i.e. a "wom" and another member, i.e. a reaction member or "rem"
- F03B13/18—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy using the relative movement between a wave-operated member, i.e. a "wom" and another member, i.e. a reaction member or "rem" where the other member, i.e. rem is fixed, at least at one point, with respect to the sea bed or shore
- F03B13/1805—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy using the relative movement between a wave-operated member, i.e. a "wom" and another member, i.e. a reaction member or "rem" where the other member, i.e. rem is fixed, at least at one point, with respect to the sea bed or shore and the wom is hinged to the rem
- F03B13/181—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy using the relative movement between a wave-operated member, i.e. a "wom" and another member, i.e. a reaction member or "rem" where the other member, i.e. rem is fixed, at least at one point, with respect to the sea bed or shore and the wom is hinged to the rem for limited rotation
- F03B13/1815—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy using the relative movement between a wave-operated member, i.e. a "wom" and another member, i.e. a reaction member or "rem" where the other member, i.e. rem is fixed, at least at one point, with respect to the sea bed or shore and the wom is hinged to the rem for limited rotation with an up-and-down movement
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2240/00—Components
- F05B2240/90—Mounting on supporting structures or systems
- F05B2240/91—Mounting on supporting structures or systems on a stationary structure
- F05B2240/915—Mounting on supporting structures or systems on a stationary structure which is vertically adjustable
- F05B2240/9151—Mounting on supporting structures or systems on a stationary structure which is vertically adjustable telescopically
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2240/00—Components
- F05B2240/90—Mounting on supporting structures or systems
- F05B2240/97—Mounting on supporting structures or systems on a submerged structure
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/30—Energy from the sea, e.g. using wave energy or salinity gradient
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
Abstract
Description
La présente invention a pour objet un moteur marin, et plus particulièrement un dispositif produisant de l'énergie à partir du mouvement continu de la houle marine. The present invention relates to a marine engine, and more particularly to a device producing energy from the continuous movement of the sea swell.
Le dispositif selon la présente invention est constitue par : un support fixe, solidement ancré sur le fond de la mer; un support mobile pouvant se déplacer télescopiquement par rapport au support fixe sous l'action d'un dispositif de commande; au moins un balancier, sensiblement horizontal, porté par ledit support mobile, chaque balancier étant relié à une de ses extrémités à un flotteur et à son autre extrémité à une pompe à eau immergée, aspirante et refoulante; un dispositif accumulateur de pression relié à chacune des pompes, une ou plusieurs turbines hydrauliques alimentes par ledit accumu moteur. The device according to the present invention is constituted by: a fixed support, firmly anchored on the sea bottom; a mobile support which can move telescopically relative to the fixed support under the action of a control device; at least one pendulum, substantially horizontal, carried by said mobile support, each pendulum being connected at one of its ends to a float and at its other end to a submerged, suction and discharge water pump; a pressure accumulator device connected to each of the pumps, one or more hydraulic turbines supplied by said engine accumulator.
De préférence, chaque flotteur est relié à une tige sensiblement verticale, articulée au bout du balancier, cette tige ayant une longueur telle que ledit balancier demeure immergé, quelle que soit l'amplitude des vagues ou de la houle; chaque pompe est une pompe à eau de mer, qui aspire l'eau qui l'environne et la refoule dans un conduit aboutissant à l'accumulateur; le support mobile porte à sa partie supérieure un dispositif de régulation à flotteur commandant son réglage en hauteur en fonction des variations du niveau moyen de l'eau, dues à la marée. Preferably, each float is connected to a substantially vertical rod, articulated at the end of the balance, this rod having a length such that said balance remains immersed, whatever the amplitude of the waves or of the swell; each pump is a seawater pump, which draws in the water which surrounds it and discharges it into a conduit leading to the accumulator; the mobile support carries at its upper part a float control device controlling its height adjustment according to variations in the average water level, due to the tide.
A titre d'exemples non limitatifs et pour fuciliter la compréhension de l'invention on a représenté aux dessins annexés :
Figure 1, une vue schématique en élévation latérule d'un mode de réalisation de l'invention;
Figure 2, une vue à échelle agrandie d'un détail de la figure 1;
Figures 3 et 4, deux vues illustrant une variante de réalisation du dispositif de la figure 1;
Figure 5, une vue schématique en plan des éléments des figures 3 et 4 assemblés.By way of nonlimiting examples and in order to clarify the understanding of the invention, the accompanying drawings show:
Figure 1, a schematic side view of an embodiment of the invention;
Figure 2, an enlarged view of a detail of Figure 1;
Figures 3 and 4, two views illustrating an alternative embodiment of the device of Figure 1;
Figure 5, a schematic plan view of the elements of Figures 3 and 4 assembled.
En se reportant à ces figures, on voit que le dispositif selon l'invention comporte un support 1 qui est solidement ancré sur le fond sous-marin de façon à demeurer absolu ment immobile. Referring to these figures, it can be seen that the device according to the invention comprises a support 1 which is firmly anchored on the seabed so as to remain absolutely immobile.
Dans l'exemple représenté à la figure 1, le support 1 comporte un alésage cylindrique 2, dans lequel coulisse, comme une tige de piston, un support mobile 3. Ce support mobile 3 comporte une pluralité de bras 4, chacun portant un balancier 5 pivotant autour d'un axe 6 porté par ledit bras 4. Pour rendre la figure 1 plus claire, un seul bras 4 a été représenté, mais le dispositif comporte de préférence une pluralité de bras 4 rayonnants autour du support 3, chaque bras 4 portant un balancier 5. In the example shown in FIG. 1, the support 1 comprises a cylindrical bore 2, in which slides, like a piston rod, a mobile support 3. This mobile support 3 comprises a plurality of arms 4, each carrying a pendulum 5 pivoting about an axis 6 carried by said arm 4. To make FIG. 1 clearer, only one arm 4 has been shown, but the device preferably comprises a plurality of arms 4 radiating around the support 3, each arm 4 carrying a pendulum 5.
C-haque balancier est relié à une de ses extrémités à pn flotteur 7 et à son autre extrémité à une pompe 10. Each pendulum is connected to one of its ends with a float pn 7 and at its other end to a pump 10.
De préférence, comme cela est représenté à la figure 1, le flotteur 7 est de forme lenticulaire pour suivre les mouvements de la surface de l'eau avec le maximum de puissance. Preferably, as shown in Figure 1, the float 7 is lenticular in shape to follow the movements of the water surface with maximum power.
De préférence également, ce flotteur 7 est fixé à l'extrémité d'une tige 8 articulée en 9 à l'extrémité du balancier 5, la longueur de la tige 8 étant telle que le balancier 5 soit toujours immergé.Preferably also, this float 7 is fixed to the end of a rod 8 articulated at 9 to the end of the balance 5, the length of the rod 8 being such that the balance 5 is always immersed.
L'autre extrémité du balancier 5 est articulé en 14 à la tige 13 du piston 15 de la pompe 10, cette dernière étant montée à pivotement, par un axe 11, sur une console 12 solidaire du support 3. The other end of the balance 5 is articulated at 14 to the rod 13 of the piston 15 of the pump 10, the latter being pivotally mounted, by an axis 11, on a console 12 secured to the support 3.
Sur le piston 15 sont placés les clapets d'aspiration 16 : ainsi, lorsque le piston 15 est relevé, lesdits clapets 16 laissent passer à travers le piston 15, l'eau dans laquelle baigne la pompe, lorsque le piston 15 est abaissé les clapets 16se ferment et l'eau est refoulée dans la conduite 17 qui comporte un clapet anti-retour 18. On the piston 15 are placed the suction valves 16: thus, when the piston 15 is raised, said valves 16 allow the water in which the pump bathes to pass through the piston 15, when the valves 15 are lowered the valves 16 is closed and the water is discharged into line 17 which includes a non-return valve 18.
Au-dessus dudit support 3 est disposé un mécanisme commandant le déplacement du support 3 par rapport au socle 1, en fonction des variations de la hauteur d'eau dues aux marées, mécanisme qui est représenté en détail à la figure 3. Au-dessus du support 3 est placée une colonne verticale 19, qui est percée sur pratiquement toute sa hauteur de trous 20 de faibles dimensions, de façon que le niveau de l'eau à l'intérieur de la colonne 19 ne soit pas ou soit peu perturbé par les vagues. Above said support 3 is arranged a mechanism controlling the movement of the support 3 relative to the base 1, as a function of the variations in the water height due to the tides, a mechanism which is shown in detail in FIG. 3. Above of the support 3 is placed a vertical column 19, which is drilled over practically its entire height with holes 20 of small dimensions, so that the water level inside the column 19 is not or is little disturbed by waves.
A l'intérieur de la colonne est disposé un flotteur 21 qui se déplace dans la colonne lorsque le niveau de l'eau varie.Inside the column is arranged a float 21 which moves in the column when the water level varies.
Les déplacements du flotteur 21 dans la colonne 19 sont captés par tout dispositif approprié et transmis à une pompe à eau 22, portée par le socle 1, qui fait monter ou descendre le piston portant le support 3, afin de maintenir constante la distance entre le (ou les) balancier 5 et le niveau moyen de l'eau. The movements of the float 21 in the column 19 are captured by any suitable device and transmitted to a water pump 22, carried by the base 1, which raises or lowers the piston carrying the support 3, in order to keep the distance between the (or the) pendulum 5 and the average water level.
Selon un exemple de réalisation, le flotteur 21 est relié par une tige rigide 23 à un levier basculant 24 qui agit sur l'une ou l'autre de deux commandes de vannes 26 placée dans un bottier 25, relié par une conduite26A à la pompe 22. De préférence un système d'amortissement est prévu de façon à éviter les mises en route intempestives de la pompe 22 au moindre mouvement du flotteur 21 : par exemple les vannes 26 ne sont actionnées qu'au-delà d'une course donnée du levier 24 et elles comportent en plus un relai temporisé de sorte qu'un signal ne soit envoyé à la pompe 22 que si le levier 24 n'agit sur l'une ou l'autre des soupapes pendant un temps minimum. According to an exemplary embodiment, the float 21 is connected by a rigid rod 23 to a rocking lever 24 which acts on one or the other of two valve controls 26 placed in a case 25, connected by a pipe 26A to the pump 22. Preferably, a damping system is provided so as to avoid inadvertent starting of the pump 22 at the slightest movement of the float 21: for example the valves 26 are actuated only beyond a given stroke of the lever 24 and they also have a timed relay so that a signal is sent to the pump 22 only if the lever 24 acts on one or the other of the valves for a minimum time.
L'eau pompée par la (ou les) pompe 10 est amenée par la canalisation 17 dans un accumulateur hydraulique 27 qui comporte un volume gazeux, de l'air par exemple, sous pression. The water pumped by the pump (s) 10 is brought through the line 17 into a hydraulic accumulator 27 which comprises a gas volume, air for example, under pressure.
De l'accumulateur 27 partent une pluralité de canalisations 28 munies chacune d'un régulateur à pression 29, alimentant des turbines hydro-électriques 30. From the accumulator 27 there leave a plurality of pipes 28 each provided with a pressure regulator 29, supplying hydro-electric turbines 30.
Le fonctionnement du dispositif est le suivant
Le site d'implantation est choisi assez loin du rivage, afin que l'appareil ne soit pas influencé par le ressac des vagues dans une zone exposée à la houle et, de préférence, au-dessus d'un fond permettant un bon ancrage du socle. Le support 3 est muni d'une pluralité de bras rayonnants en étoile, les balanciers ayant une longueur d'environ 20 mètres et les flotteurs 7 un volume d'environ 10 m3. Chaque flotteur, en suivant le mouvement de la houle, va se soulever et s'abaisser, ce qui actionne la pompe correspondante 10, de sorte que toutes les pompes débitent dans la canalisation 17 qui remplit l'accumulateur 27.L'eau sous pression est ensuite dirigée vers les turbines 30 qu'elle entrain Les régulateurs 29 sont reliés les uns aux autres et sont tarés à des pressions légèrement crotssantes les unes par rapport aux autres, de façon à s'ouvrir séquentiellement les uns après les autres lorsque la pression augmente. Ainsi, le nombre de turbines mises en action sera automatiquement fonction de l'augmentation de pression dans l'accumulateur 27, qui elle est fonction du débit dans la canalisation 17. Il y aura donc ajustement automatique entre le débit d'alimentation de l'accumulateur 27 et le débit employé par la (ou les) turbine.The operation of the device is as follows
The site of installation is chosen far enough from the shore, so that the device is not influenced by the surf of the waves in an area exposed to swell and, preferably, above a bottom allowing a good anchoring of the basement. The support 3 is provided with a plurality of star radiating arms, the pendulums having a length of approximately 20 meters and the floats 7 having a volume of approximately 10 m3. Each float, following the movement of the swell, will rise and fall, which activates the corresponding pump 10, so that all the pumps flow into the pipe 17 which fills the accumulator 27. The water under pressure is then directed to the turbines 30 which it drives The regulators 29 are connected to each other and are calibrated at slightly crosst pressures relative to each other, so as to open sequentially one after the other when the pressure increases. Thus, the number of turbines activated will automatically depend on the pressure increase in the accumulator 27, which is a function of the flow rate in the pipe 17. There will therefore be automatic adjustment between the supply flow rate of the accumulator 27 and the flow rate used by the turbine (s).
Il est bien évident que l'accumulateur 27 devra être de dimensions impprtantes pour amortir les variations
etre de débit qui peuvent/grandes et sera, de préférence, à terre.It is obvious that the accumulator 27 will have to be of substantial dimensions to absorb variations
be of debit which can / large and will preferably be ashore.
Exemple . Example.
Si l'on emploie pour chaque balancier un flotteur de 10 m3, soit approximativement un déplacement équivalent à 10.000 kg , que l'amplitude de la houle soit de 1m et sa fréquence de une ondulation par 5 secondes, la puissance que l'on peut récupérer sera, si l'on ne tient pas compte des pertes mécaniques (minimes) P = IC)-ooo = 26,66 CV,
73 x 5 et cela pour chaque balancier.If a float of 10 m3 is used for each balance, approximately a displacement equivalent to 10,000 kg, the amplitude of the swell is 1m and its frequency of a ripple per 5 seconds, the power that can be recover will be, if one does not take into account the mechanical losses (minimal) P = IC) -ooo = 26.66 CV,
73 x 5 and this for each balance.
Comme cela est représenté aux figures 3 et 4, le socle 1, le support mobile 3 et chaque balancier 5 peuvent être réalisés par des assemblages de poutres entretoisées. As shown in Figures 3 and 4, the base 1, the movable support 3 and each pendulum 5 can be made by assemblies of braced beams.
Ainsi (figure 3) le balancier 5 peut être constitué par un tube 31 en PVC, rigidifié par une pluralité de haubans 32, eux-mêmes raidis sur des supports 33, dont l'un porte un axe 34 correspondant à l'axe d'articulation 6 de la figure 1. Thus (Figure 3) the pendulum 5 can be constituted by a PVC tube 31, stiffened by a plurality of shrouds 32, themselves stiffened on supports 33, one of which carries an axis 34 corresponding to the axis of articulation 6 of FIG. 1.
Cet axe 34 peut être porté par deux bras 35 (figure 4) correspondant au bras 4 de la figure 1, ces bras 35 étant solidaires d'une structure parallélépipédique 36, correspondant au support 3, qui coulisse à l'intérieur d'une structure 37, correspondant au socle 1, au moyen de galets 38. Ces structures 36 et 37 sont construites à l'aide de poutrelles entretoisées, selon la technique bien connue des grues de chantier. This axis 34 can be carried by two arms 35 (Figure 4) corresponding to the arm 4 of Figure 1, these arms 35 being integral with a rectangular structure 36, corresponding to the support 3, which slides inside a structure 37, corresponding to the base 1, by means of rollers 38. These structures 36 and 37 are constructed using braced beams, according to the well-known technique of construction cranes.
La figure 5 est, à plus petite échelle, une vue très simplifiée, en plan,des dispositifs des figures 3 et 4, qui montre quatre bras 5, faits de tubes 31 haubannés portés par une structure telle que 36. FIG. 5 is, on a smaller scale, a very simplified plan view of the devices of FIGS. 3 and 4, which shows four arms 5, made of guyed tubes 31 carried by a structure such as 36.
Dans ce cas, le déplacement de la structure 36 par rapport à 37 est obtenu par des vérins alimentés par la pompe 22. In this case, the displacement of the structure 36 relative to 37 is obtained by jacks supplied by the pump 22.
Claims (13)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7926372A FR2467997A1 (en) | 1979-10-24 | 1979-10-24 | Wave power machine - uses telescopic hydraulic column to support levers with float and pump at opposite ends, to pump water to drive water turbines |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7926372A FR2467997A1 (en) | 1979-10-24 | 1979-10-24 | Wave power machine - uses telescopic hydraulic column to support levers with float and pump at opposite ends, to pump water to drive water turbines |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2467997A1 true FR2467997A1 (en) | 1981-04-30 |
Family
ID=9230989
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7926372A Withdrawn FR2467997A1 (en) | 1979-10-24 | 1979-10-24 | Wave power machine - uses telescopic hydraulic column to support levers with float and pump at opposite ends, to pump water to drive water turbines |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2467997A1 (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6388342B1 (en) * | 1999-07-28 | 2002-05-14 | Richard C. Vetterick, Sr. | Hydro electric plant |
NO20081642L (en) * | 2008-04-02 | 2009-10-05 | Statoilhydro Asa | Power plant, procedure for power production, and use of the power plant. |
GB2459295A (en) * | 2008-04-18 | 2009-10-21 | Harry Walton | Wave energy converter with pneumatic pump |
GB2467611A (en) * | 2009-02-07 | 2010-08-11 | Dartmouth Wave Energy Ltd | Wave energy apparatus with platform height control system |
EP2977604A4 (en) * | 2014-05-29 | 2017-03-15 | Francisco Anastasi Ribalta | Device for harnessing sea wave energy |
PL422521A1 (en) * | 2017-08-10 | 2019-02-11 | Bogusław Kitowski | Set of technical devices intended for generation of electrical energy, utilizing energy of sea waves for this purpose |
GB2627464A (en) * | 2023-02-22 | 2024-08-28 | Oakes Ltd | A hydroelectric power harvesting apparatus |
-
1979
- 1979-10-24 FR FR7926372A patent/FR2467997A1/en not_active Withdrawn
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6388342B1 (en) * | 1999-07-28 | 2002-05-14 | Richard C. Vetterick, Sr. | Hydro electric plant |
NO20081642L (en) * | 2008-04-02 | 2009-10-05 | Statoilhydro Asa | Power plant, procedure for power production, and use of the power plant. |
GB2459295A (en) * | 2008-04-18 | 2009-10-21 | Harry Walton | Wave energy converter with pneumatic pump |
GB2467611A (en) * | 2009-02-07 | 2010-08-11 | Dartmouth Wave Energy Ltd | Wave energy apparatus with platform height control system |
EP2977604A4 (en) * | 2014-05-29 | 2017-03-15 | Francisco Anastasi Ribalta | Device for harnessing sea wave energy |
PL422521A1 (en) * | 2017-08-10 | 2019-02-11 | Bogusław Kitowski | Set of technical devices intended for generation of electrical energy, utilizing energy of sea waves for this purpose |
GB2627464A (en) * | 2023-02-22 | 2024-08-28 | Oakes Ltd | A hydroelectric power harvesting apparatus |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP5574298B2 (en) | Wave actuated pump and means for connecting it to the seabed | |
US5405250A (en) | Wave energy extraction device | |
US3961479A (en) | Energy converting hydraulic buoyant motor | |
AU2008338244B2 (en) | Buoyant actuator | |
JPH09506951A (en) | Wave energy converter | |
NO329737B1 (en) | Bolgekraftverk | |
US4023515A (en) | Floating wave powered pump | |
EP0224506A1 (en) | Apparatus for deriving energy from variation of the level of a body of fluid | |
FR2467997A1 (en) | Wave power machine - uses telescopic hydraulic column to support levers with float and pump at opposite ends, to pump water to drive water turbines | |
US20040163387A1 (en) | Wave power generator | |
EP2265814A1 (en) | Wave power plant | |
CA2736132A1 (en) | An apparatus for generating power from a fluid stream | |
US20030137150A1 (en) | Conversion device for nature energy at sea | |
JP2002502926A (en) | Kinetic energy production machine | |
US4462762A (en) | Wave action machine | |
US4171189A (en) | Lift-force pump activated by the weight and buoyancy of giant buoys | |
NO814143L (en) | ENERGY GENERATION SYSTEM. | |
US692396A (en) | Wave-motor. | |
FR2461194A1 (en) | Tidal energy type submarine constant pressure gas collector - has anchors for tank with water passage and gas intake and outlet | |
JPH08312519A (en) | Buoy for wave power pumping device and wave power pumping device | |
EP3164595B1 (en) | Installation for the recovery of energy from sea swell and/or the active attenuation of said swell | |
JPH02136570A (en) | Power generator utilizing wave power | |
FR2509800A1 (en) | Energy extractor for sea currents - has cage frame with slide guides for movable float actuating compressed air floats | |
RU112719U1 (en) | WAVE PUMP INSTALLATION | |
FR2607870A1 (en) | Method for exploiting the kinetic energy of the waves of the sea or of lakes |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |