WO2003060318A1 - Dispositif pour l'exploitation de l'energie motrice de la houle - Google Patents
Dispositif pour l'exploitation de l'energie motrice de la houle Download PDFInfo
- Publication number
- WO2003060318A1 WO2003060318A1 PCT/FR2003/000060 FR0300060W WO03060318A1 WO 2003060318 A1 WO2003060318 A1 WO 2003060318A1 FR 0300060 W FR0300060 W FR 0300060W WO 03060318 A1 WO03060318 A1 WO 03060318A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cylinder
- hydraulic
- pulley
- energy
- connecting elements
- Prior art date
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
- F03B13/1885—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 tied to the rem
-
- 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
Definitions
- the present invention relates to a device making it possible to transform the motive energy of the swell usually called vagomotor energy into exploitable energy such as, for example, electrical energy.
- Electricity is historically and essentially produced from high-fall or low-drop hydraulic dams, fossil-fired thermal power plants, nuclear reactors, tidal power plants, geothermal duplicates, wind or solar systems. These systems, all of which are not efficient or economical when we consider the entire transformation chain leading to the electricity consumer, are in addition for some very polluting or, for others, generate only low quantities of electricity at a high cost. The vast majority of these systems occupy a more or less expensive and scarce land area depending on the location with sometimes industrial risks for the neighborhood.
- remote sites are currently mainly supplied by diesel-electric power stations which occupy a non-negligible part of the available space, or variable site loads as in the case of "offshore” oil industry.
- Their fuel supply is all the more expensive and sometimes sensitive to unfavorable weather conditions or to various logistical problems.
- wave energy which is capable of producing substantial amounts of electricity at a economic cost.
- the invention therefore more particularly aims to fill this gap by means of a wave energy transformation device implementing a floating device connected to the sea floor by a specific anchor and comprising means for convert the vertical displacements of the device with respect to said bottom into exploitable mechanical and / or hydraulic energy which can, for example, be converted into electrical energy.
- the conversion means used will be located on the floating support of the device.
- the anchoring may then comprise, on the one hand, a first flexible connecting element connected by one of its ends to the conversion means and by its other end to a second flexible connecting element such as, for example, a cable , a chain, or even a rigid one such as, for example, a tube or a mixed system, itself anchored to the bottom of the sea and possibly kept in suspension by buoys.
- These conversion means may consist of a closed-loop hydraulic circuit, integral with the floating support, the circulation of the hydraulic fluid inside this circuit being ensured by means of a pumping mechanism actuated by the above-mentioned connecting elements.
- this hydraulic circuit will include suitable conversion means, for converting the hydraulic energy of said circuit for example into electrical energy.
- the device according to the invention makes it possible to produce substantial quantities of electricity without generating pollution or using, for its operation, from non-renewable energy sources: the device essentially recovers the motive energy of a body of water, subject to the effects of swell and waves, known as an oscillating water column, vertically moving the floating support according to a cycle which is a function of the period, the wavelength, the amplitude of the swell and the importance of the dimensioning of the floating support.
- the hydraulic circuit may successively comprise, in the direction of circulation of the hydraulic fluid: a buffer tank of fluid at low pressure, or even at atmospheric pressure, an intake manifold with an automated non-return valve to the cylinder of a jack, the piston of which is mounted to slide freely inside this cylinder, and which has a supply port and a fluid discharge port, a cylinder fluid discharge pipe with automated valve for non-return valve, a high pressure pneumatic tank, and a fluid evacuation pipe from the tank with an automated non-return valve to a hydraulic motor, a hydraulic motor evacuation pipe with an automated non-return valve to the above buffer tank.
- a buffer tank of fluid at low pressure, or even at atmospheric pressure an intake manifold with an automated non-return valve to the cylinder of a jack, the piston of which is mounted to slide freely inside this cylinder, and which has a supply port and a fluid discharge port, a cylinder fluid discharge pipe with automated valve for non-return valve, a high pressure pneumatic tank, and a fluid evacuation pipe from the
- the jack has pulleys at each of its ends allowing the cable to be wound around the jack.
- the piston At the start of a swell cycle, for example in the low position of the floating support, the piston is in the deployed position and the volume of the cylinder filled with hydraulic fluid.
- a feature of the device is that when the float moves vertically towards the crest of the swell, the cable, connected to the seabed on the one hand and fixed to the floating support on the other hand, undergoes a tension equivalent to the thrust exerted on the floating support by the oscillating water column. It therefore applies a force to the piston, which causes the expulsion of the fluid from the cylinder to the high pressure pneumatic tank described above.
- the device During the rising phase of the floating support under the effect of the swell, the device therefore has the effect of transforming the motive energy of the swell into hydraulic energy and of accumulating it in the pneumatic reservoir at high pressure, adjustable according to criteria predefined by the operator, then transform this hydraulic energy into rotary energy by evacuating the fluid from the high pressure tank, to a hydraulic motor.
- the hydraulic motor drives an electricity generator.
- the high pressure pneumatic tank can optionally be supplied by several similar cylinders in parallel so as to increase the capacity and the flow rate as a function of the floating support gauge, the energy potential of the site and the capacity of the hydraulic installation.
- the fluid from the low pressure buffer tank fills the cylinder by gravity or possibly with the help of a small centrifugal pump or a low pressure tank so as to repel the piston in the deployed position.
- the device is then ready to undergo the action of a new wave cycle.
- the device also includes ancillary elements such as an automatic valve regulation system operating in phase with the swell cycle and means for anchoring to the seabed such as concrete weights or dark or bored piles depending on the site and the importance of the installation.
- the floating support can consist of a simple box of modest dimensions, made of steel or concrete, a barge or even a ship of large tonnages depending on the size of the hydraulic system and the importance of electrical production. possible on the chosen site, depending on the swell characteristics of said site.
- the device according to the invention is particularly intended for the production of electricity from floating mobile units making it possible to supply industrial or hotel installations "offshore” or coastal installations, which would be connected to it by an underwater electric cable , thereby reducing the use of non-renewable energy.
- the greater or lesser depth of water of a site is not limiting for the device since it allows the floating of the chosen floating support, leaving sufficient free space for the specific anchoring of the device under the hull. In the case of shallow water depths, a rigid variant of the anchoring system can be considered.
- the single figure is a schematic representation making it possible to illustrate the principle of a device according to the invention.
- the floating support 1 is shown schematically in solid lines by a sealed box of parallelepipedal shape provided with a vertical central well passing through P.
- this box performs an up / down movement alternately between the high position (level N ⁇ , indicated in solid lines (the water level N 1 corresponding to the crest of the swell) and a low position (level N 2 ), shown partially in broken lines (the water level N 2 corresponding to the hollows of the swell).
- This floating support 1 has a size chosen according to the energy potential of the site. It can be maintained in a horizontal position by a conventional catenary anchor, not shown in the drawing if necessary.
- the device is connected to the bottom of the sea by at least one cable 2 specific to the device, which is connected by one of its ends 3 to a system of chains or tubes 4 anchored on the sea bottom F of adequately.
- This cable 2 passes through the well P and is fixed by its other end (anchor 5) on the floating support 1, after winding around a deformable assembly comprising a jack 6 whose cylinder 7 is integral with the floating support 1 and whose the piston 8 slides freely inside the cylinder 7.
- the jack 6 is provided at each of its ends with one or more pulleys G 1? G 2 (respectively mounted on the rod of said piston 8 and on the cylinder 7) having the effect of increasing the force of the cable 2 on the jack 6 in the manner of a hoist and of reducing the necessary stroke of the piston 8 when the floating support 1 moves to its high position (level N]) under the effect of the swell.
- the single figure comprises a second device, partially shown, comprising a cable 2 ', a pulley G' 2 and the anchor 5 ', a cylinder 6' comprising a cylinder 7 'and a piston 8'.
- the number of windings of the cable 2 around the pulleys GG 2 is determined as a function of parameters such as the maximum foreseeable swell height, the working pressure of the high pressure tank, the available stroke of the piston 8, the section of the piston 8, the operating voltage of cable 2 and, if applicable, the maximum amplitude of the tide.
- a mechanical adjustment of the length of the cable 2, using a winch not indicated in the drawing, may be provided at the level of the anchorage 5 of the cable 2 with the floating support 1.
- this reservoir 14 can receive the flow of several jacks 6 (inputs Ei, E 2 , the input E 2 being connected to the cylinder 6 'by the pipe 13') to supply a hydraulic motor. at high pressure 16, by a pipe 17 provided with an automated non-return valve Vj ⁇ .
- the leakage flow from the hydraulic motor 16 is evacuated through a pipe 18 provided with an automated non-return valve V ⁇ to a buffer tank 19, at low pressure or at atmospheric pressure.
- This buffer tank 19 completes the cycle by supplying the cylinder 7 of the cylinder 6 by gravity through a supply pipe 20 provided with an automated non-return valve V n or, alternatively, using a low pressure tank or a small centrifugal pump not shown in the drawing, so as to push the piston 8 into the deployed position (position indicated by the reference 12) during the movement of the floating support 1 towards its low position (level N 2 ) in the hollow of the swell.
- the piston 8 does not have to compensate for the weight of the specific anchoring system 4 which is taken up by flotation elements not shown in the drawing but, only the mechanical friction, the hydraulic losses and a very short length of the cable 2 between the level of the axis of the pulleys G 2 and the level of the end of the cable 2.
- the successive movements of the floating support 1 will activate the jack 6 under the action of the cable 2 like a piston pump and maintain the circulation pressure in the high pressure pneumatic tank 14.
- the hydraulic motor 16 can thus drive an electric generator 21 permanently under the effect of the swell.
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP03717334A EP1466091A1 (fr) | 2002-01-14 | 2003-01-09 | Dispositif pour l'exploitation de l'energie motrice de la houle |
AU2003222322A AU2003222322A1 (en) | 2002-01-14 | 2003-01-09 | Device for using wave energy |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR02/00447 | 2002-01-14 | ||
FR0200447A FR2834757B1 (fr) | 2002-01-14 | 2002-01-14 | Dispositif pour l'exploitation de l'energie motrice de la houle |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2003060318A1 true WO2003060318A1 (fr) | 2003-07-24 |
Family
ID=8871299
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2003/000060 WO2003060318A1 (fr) | 2002-01-14 | 2003-01-09 | Dispositif pour l'exploitation de l'energie motrice de la houle |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1466091A1 (fr) |
AU (1) | AU2003222322A1 (fr) |
FR (1) | FR2834757B1 (fr) |
WO (1) | WO2003060318A1 (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2497407B (en) * | 2012-11-28 | 2014-05-14 | Peter James Stage | Barge generator |
CN111971473A (zh) * | 2018-03-09 | 2020-11-20 | 株式会社人进 | 波浪能发电系统及其控制方法 |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2153057B1 (fr) | 2007-05-31 | 2016-03-09 | Bruno Larivain | Dispositif permettant de convertir l'ondulation et/ou les oscillations d'un liquide dans lequel il est au moins partiellement immerge, en une energie utilisable |
CN113027661B (zh) * | 2021-04-20 | 2023-02-07 | 天津大学前沿技术研究院有限公司 | 一种流致振动液压发电设备 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1818066A (en) * | 1929-06-04 | 1931-08-11 | Jouy Jules | System for recovering the energy of the movements of the sea |
US3030893A (en) * | 1958-03-21 | 1962-04-24 | Donald U Shaffer | Wave motion actuated hydraulic pump |
US3918260A (en) * | 1974-12-30 | 1975-11-11 | Klaus M Mahneke | Waved-powered driving apparatus |
FR2477237A1 (en) * | 1980-02-29 | 1981-09-04 | Sirvent L | Sea wave energy converter - uses valved piston operated by float to pump water to store for discharge through turbine |
US4434375A (en) * | 1982-06-30 | 1984-02-28 | Taylor Robert N | Wave energy converter |
DE3419565A1 (de) * | 1984-05-25 | 1985-11-28 | Rolf Dr. 5090 Leverkusen Brück | Vorrichtung zur erzeugung von energie aus meereswellen |
-
2002
- 2002-01-14 FR FR0200447A patent/FR2834757B1/fr not_active Expired - Fee Related
-
2003
- 2003-01-09 EP EP03717334A patent/EP1466091A1/fr not_active Withdrawn
- 2003-01-09 AU AU2003222322A patent/AU2003222322A1/en not_active Abandoned
- 2003-01-09 WO PCT/FR2003/000060 patent/WO2003060318A1/fr not_active Application Discontinuation
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1818066A (en) * | 1929-06-04 | 1931-08-11 | Jouy Jules | System for recovering the energy of the movements of the sea |
US3030893A (en) * | 1958-03-21 | 1962-04-24 | Donald U Shaffer | Wave motion actuated hydraulic pump |
US3918260A (en) * | 1974-12-30 | 1975-11-11 | Klaus M Mahneke | Waved-powered driving apparatus |
FR2477237A1 (en) * | 1980-02-29 | 1981-09-04 | Sirvent L | Sea wave energy converter - uses valved piston operated by float to pump water to store for discharge through turbine |
US4434375A (en) * | 1982-06-30 | 1984-02-28 | Taylor Robert N | Wave energy converter |
DE3419565A1 (de) * | 1984-05-25 | 1985-11-28 | Rolf Dr. 5090 Leverkusen Brück | Vorrichtung zur erzeugung von energie aus meereswellen |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2497407B (en) * | 2012-11-28 | 2014-05-14 | Peter James Stage | Barge generator |
CN111971473A (zh) * | 2018-03-09 | 2020-11-20 | 株式会社人进 | 波浪能发电系统及其控制方法 |
CN111971473B (zh) * | 2018-03-09 | 2022-10-18 | 株式会社人进 | 波浪能发电系统及其控制方法 |
Also Published As
Publication number | Publication date |
---|---|
FR2834757B1 (fr) | 2004-10-22 |
EP1466091A1 (fr) | 2004-10-13 |
FR2834757A1 (fr) | 2003-07-18 |
AU2003222322A1 (en) | 2003-07-30 |
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