DK178830B1 - Reversible duoprop tidal generator - Google Patents
Reversible duoprop tidal generator Download PDFInfo
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- DK178830B1 DK178830B1 DKPA201000028A DKPA201000028A DK178830B1 DK 178830 B1 DK178830 B1 DK 178830B1 DK PA201000028 A DKPA201000028 A DK PA201000028A DK PA201000028 A DKPA201000028 A DK PA201000028A DK 178830 B1 DK178830 B1 DK 178830B1
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- generator
- tide
- duoprop
- reversible
- tidal
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- 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
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Abstract
Det beskrives en vendbar Duoprop tidevandsgenerator af en type, der anvendes, hvor der er strømmende vand tilstede, hvor det strømmende vand, via et eller flere propelblade/turbinesæt, roterer generatorhuset/statoren den ene vej mens generatorakslen/ankeret via et eller flere propelblade/turbinesæt roterer den anden vej. Tidevandsgeneratoren omfatter et hulrum, der er tryksat med luft i overtryk i forhold til omgivelserne.It is described a reversible Duoprop tidal generator of a type used where flowing water is present, where the flowing water, via one or more propeller blades / turbine sets, rotates the generator housing / stator one way while the generator shaft / anchor via one or more propeller blades / turbine sets rotate the other way. The tidal generator comprises a cavity which is pressurized with air in excess pressure relative to the surroundings.
Description
VENDBAR DUOPROP TIDEVANDSGENERATORREVERSIBLE DUOPROP TIDE WATER GENERATOR
Beskrivelse Opfindelsens områdeDescription of the Invention
Den foreliggende opfindelse angår en tidevandsgenerator af den i krav 1 angivne type.The present invention relates to a tidal generator of the type set forth in claim 1.
Opfindelsens baggrundBACKGROUND OF THE INVENTION
For at holde fokus på grøn energi, er denne idé med en tidevandsgenerator fostret. Til forskel fra vindkraft, bølgeenergi, samt solenergi, der alle kræver, vinden blæser, bølgerne er til stede eller solen skinner, er tidevand en forudsigelig, konstant kraft, som virker døgnet rundt, dog undtaget de to gange i døgnet, hvor strømmen vender.To keep the focus on green energy, this idea with a tidal generator has been fostered. Unlike wind power, wave energy, as well as solar energy, which all requires, the wind blows, the waves are present or the sun is shining, tides are a predictable, constant force that operates around the clock, except for the two times a day the current turns.
Fordelene ved at udnytte tidevandsstrømmene til og fra fjorde, bælter, stræder samt hvor strømmende vand ellers forefindes, kan kort opsummeres: Store mængder energi, forholdsvis lave anlægsudgifter, ingen synlighed idet anlægget virker under overfladen (hvis dette ønskes), kan placeres tæt på land, hvor vanddybden tillader det, udsættes ikke for de store påvirkninger fra storme, da anlægget typisk virker så langt under havoverfladen, at dette ikke udsættes for bølger, kan placeres tilstrækkeligt dybt, så der kan sejles over anlægget og eksisterende pyloner kan forholdsvis nemt benyttes til montering af anlægget. Eksempelvis på havvindmøller (hvor kabler i forvejen er ført til), broer etc.The benefits of utilizing tidal flows to and from fjords, belts, straits and wherever flowing water is present can be briefly summarized: Large amounts of energy, relatively low construction costs, no visibility as the plant works below the surface (if desired) can be placed close to land where the depth of water permits, is not exposed to the major influences from storms, as the plant typically acts so far below the sea surface that it is not exposed to waves, can be placed sufficiently deep to sail over the plant and existing pylons can be used relatively easily to installation of the plant. For example, offshore wind turbines (where cables have already been routed), bridges etc.
Tidevandsanlæg er kendt fra flere forskellige steder i verden, blandt andet fra Nordnorge, hvor elselskabet ’’Hammerfest Strøm” har lavet en prototype af en ’’undervandsvindmølle”. Dette er en tre-bladet tidevandsmølle, der tager udgangspunkt i en almindelig vindmølle, gjort vandtæt, krympet i størrelse og sat på en fast pylon. ’’Marine Current Turbines” har også lavet et anlæg kaldet ’’Seagen”. Dette er et tidevandsanlæg, hvor to rotorer er udformet som en to-bladet, krympet vindmøllevinge, monteret på en vandret liggende arm og siddende på en faststøbt pylon, der rager op over vandoverfladen. Armen kan derefter hæves eller sænkes i vandsøjle samt over denne for eftersyn/rep.Tidal plants are known from several different places in the world, including from Northern Norway, where the electricity company '' Hammerfest Strøm 'has made a prototype of an' 'underwater wind turbine' '. This is a three-bladed tidal turbine that is based on a regular wind turbine, waterproof, shrunk in size and mounted on a fixed pylon. '' Marine Current Turbines '' have also created a plant called '' Seagen ''. This is a tidal system where two rotors are designed as a two-blade, shrunken wind turbine blade, mounted on a horizontal arm and seated on a molded pylon that protrudes above the water surface. The arm can then be raised or lowered in a water column as well as over this for inspection / rep.
En anden metode til at udnytte tidevandet går ud på, at lave dæmninger, i hvilke der er sat et antal turbiner, som udnytter tidevandet både på vej ind og på vej ud. Denne metode er eksempelvis på tegnebrættet til et projekt i Severn i England.Another method of exploiting the tide is to create dams in which a number of turbines are installed, which utilize the tide both on the way in and out. This method is, for example, on the drawing board for a project in Severn, England.
Ulemperne, der er fælles for disse metoder er, at de alle har temmelig høje anlægsomkostninger og at de udelukkende tager sigte på at kunne bruges, hvor tidevandsstrømmen er høj. Anlæg hvor dæmninger er involverede, har desuden en ikke ubetydelig indvirkning på den lokale flora og fauna.The disadvantages common to these methods are that they all have rather high construction costs and that they are solely aimed at being able to be used where the tidal flow is high. Plants where dams are involved also have a not insignificant impact on the local flora and fauna.
For at kunne udnytte energien optimalt i tidevandsstrømmene kræves flere faktorer opfyldt. Blandt andet en generator/turbine, der kan vende sig i forhold til, hvor strømmen kommer fra og samtidig udnytte energien i vandet flere gange, så udnyttelsen bliver så optimal som muligt. Dette giver mulighed for udnyttelse af strømmene, hvor disse ikke er kraftige nok til at drive en turbine efter de traditionelle metoder. Desuden en fast forankring, typisk et anker eller en pylon støbt ned i havbunden, så denne kan modstå de kræfter tidevandet udsætter generatoren/turbinen for. Et kombineret ristværk/vingesystem, der forhindrer for store stykker drivgods i at genere driften, en optimeret udveksling mellem drivakslen og generatoren i forhold til de strømme, der er til stede på det pågældende driftssted, samt kraftkabel til land. W02007017629A1 beskriver en tidevandsgenerator omfattende mindst to sæt koaksialt monteredet, drejelige rotorblade anbragt således, at det ene sæt ikke skygger for det andet sæt. De to sæt rotorblade roterer hver sin vej. W02008093037A1 beskriver en tidevandsgenerator omfattende et hovedlegeme, hvortil der er koblet rotorblade for at bibringe rotation af hovedlegemet som reaktion på strømmen af vandet, således at impulsmoment bevares ved retningsændring af vandstrømmen.To be able to utilize the energy optimally in the tidal currents several factors must be met. Among other things, a generator / turbine that can turn around where the power comes from and at the same time utilize the energy in the water several times, so that the utilization becomes as optimal as possible. This allows for the utilization of the currents where these are not powerful enough to operate a turbine according to the traditional methods. In addition, a firm anchor, typically an anchor or pylon cast into the seabed, to withstand the forces of the tide the generator / turbine expose. A combined grating / blade system that prevents large pieces of propellant from interfering with the operation, an optimized exchange between the drive shaft and the generator in relation to the currents present at the operating site, and power cable to land. W02007017629A1 describes a tidal generator comprising at least two sets of coaxially mounted rotatable rotor blades arranged so that one set does not shade the other set. The two sets of rotor blades rotate each way. WO2008093037A1 discloses a tidal generator comprising a main body to which rotor blades are coupled to impart rotation of the main body in response to the flow of the water so that momentum momentum is maintained by directional change of the water flow.
De kendte løsninger omfatter komplicerede og dyre tætningsløsninger indrettet til at forhindre vandindtrængning til de elektriske komponenter. Det er således ønskeligt at tilvejebringe en tidevandsgenerator, der ikke kræver komplicerede og dyre tætningsløsninger.The known solutions include complicated and expensive sealing solutions adapted to prevent water penetration to the electrical components. Thus, it is desirable to provide a tidal generator which does not require complicated and expensive sealing solutions.
Opfindelsens formålThe object of the invention
Den foreliggende opfindelses formål er at tilvejebringe en tidevandsgenerator, der ikke kræver komplicerede og dyre tætningsløsninger.The object of the present invention is to provide a tidal generator which does not require complicated and expensive sealing solutions.
Formålet med den foreliggende opfindelse opnås med en tidevandsgenerator som defineret i krav 1. Foretrukne udførelsesformer er defineret i underkravene og er forklaret i den følgende beskrivelse og illustreret i de tilhørende figurer.The object of the present invention is achieved with a tidal generator as defined in claim 1. Preferred embodiments are defined in the subclaims and are explained in the following description and illustrated in the accompanying figures.
FigurbeskrivelseFigure Description
Fig. 1FIG. 1
Her ses en komplet tidevandsgenerator bestående af svirvelsystem 1 - 2 med glidende kraftovergang 9, regulerbar/fast opdrift 13, forreste vinge/vingesæt 11, generator 14, forreste opdriftsring 12, kombineret lejebuk/gearing til generatoraksel 15, vingeakselhus 17, bagerste opdriftsring 20. Det kombinerede selvrensende ristværk/vingesystem er fastmonteret på generatorhuset, via huset til den regulerbare/faste opdrift samt via en passende gearing(milliongear), på bageste opdriftshus. Akselhuset er også, sammen med gearhuset, en del af opdriften. Dette sker ved, at samtlige dele af applikationen er forsynet med trykluft via hule aksler. Generatorvingerne i turbinehjulene 11,12 er ført skråt bagud, så eventuelt drivgods som måtte ramme vingerne, bliver ført forbi systemet. Idet generatoren er en integreret del af systemet, er generatorhuset 14 i direkte forbindelse med det omgivende vand, hvilket bevirker, at der til enhver tid er maksimal køling på generatoren. Dette giver mulighed for maksimal udnyttelse af kapaciteten kontinuerligt.Here is seen a complete tidal generator consisting of swivel systems 1 - 2 with sliding power transition 9, adjustable / fixed buoyancy 13, front wing / wing set 11, generator 14, front buoyancy ring 12, combined bearing / gearbox for generator shaft 15, wing shaft housing 17, rear buoyancy ring 20. The combined self-cleaning grate / blade system is permanently mounted on the generator housing, via the housing for the adjustable / fixed buoyancy and via an appropriate gearing (million gears), on the rear buoyancy housing. The axle housing, together with the gear housing, is also part of the buoyancy. This is because all parts of the application are supplied with compressed air via hollow shafts. The generator blades in the turbine wheels 11,12 are slanted backwards, so that any propellant which may hit the blades is passed past the system. As the generator is an integral part of the system, the generator housing 14 is in direct communication with the surrounding water, which means that there is maximum cooling at all times on the generator. This allows for maximum utilization of capacity continuously.
Fig. 2 -3 -4FIG. 2 -3 -4
Her ses tidevandsgeneratoren udfoldet Fig. 5-6 -7-8-9-10-11-12Here the tide generator is unfolded. 5-6 -7-8-9-10-11-12
Her ses tidevandsgeneratoren når applikationen bliver brugt til pylonmontering. I dette tilfælde består hver applikation af to tidevandsgeneratorer monteret på hver sin halve slæde 23, som derefter samles omkring pylonen 26. For at sikre, at tidevandsgeneratoren står frit i strømmende vand, er på hver halvskal monteret et gitterværk 22. Hver halvskal designes til den specifikke pylon. På slæden er monteret ruller 21 med det formål, at gøre det muligt at hæve slæden med applikationen påmonteret. Dette kan evt. ske ved hjælp af wirehejs, så eftersyn og reparation nemt kan foretages. Samme wirehejs kan benyttes i forbindelse med optimering af tidevandsgeneratorens placering i vandsøjlen.Here you see the tide generator when the application is used for pylon mounting. In this case, each application consists of two tidal generators mounted on each of their half slides 23, which are then assembled around the pylon 26. To ensure that the tidal generator is free in flowing water, a grating unit 22. Each half shell is designed for it. specific pylon. Rollers 21 are mounted on the carriage for the purpose of raising the carriage with the application mounted. This may be possible. is done by wire hoisting so that inspection and repair can be easily done. The same wire lift can be used in connection with optimizing the location of the tidal generator in the water column.
Fig. 13FIG. 13
Eksploderet tegning Fig. 14Exploded view Fig. 14
Her ses en samlet tegning med anker 30, ankerkæde 29, wirehejs 28 samt forsyningsbøje 27 og tidevandsgenerator. På Tidevandsgeneratorer, der er forankret på havbunden og fastholdt i kæde, bruges wirehejset 28 mellem bøjen og tidevandsgeneratoren til at fastholde den fastlagte dybde, samt eventuelt justere sig selv i forhold til strømningshastighederne i vandmasserne. Desuden benyttes dette hejs også til eftersyn/reparation.Here is a combined drawing with anchor 30, anchor chain 29, wire hoist 28 as well as supply buoy 27 and tidal generator. On tidal generators anchored to the seabed and held in chain, the wire hoist 28 is used between the buoy and the tidal generator to maintain the set depth, and optionally adjust itself to the flow rates in the water masses. In addition, this hoist is also used for inspection / repair.
Fig. 15-16-17- 18FIG. 15-16-17-18
Luftforbindelsen til tidevandsgeneratoren fra overfladen på forankrede modeller kommer fra en forsyningsbøje. Denne bøje kan eventuelt indeholde: Kompressor, vandudskiller, tågesmøringsapparat og tryktank til forsyning af trykluft (tryktanken kunne måske med fordel udgøre det nederste af bøjen), luftsnorkel, styring til niveau, hejseværk samt backupbatteri etc. På selve forbindelsen fra forankring til overfladen kan man muligvis med fordel, med jævne mellemrum, placere trykfølere kombineret med strømningsfølere, så tidevandsgeneratoren til enhver tid kan placere sig i vandsøjlen, hvor strømmen er stærkest.The air connection to the tidal generator from the surface of anchored models comes from a supply buoy. This buoy may contain: Compressor, water separator, fog lubricator and pressure tank for supply of compressed air (the pressure tank could advantageously constitute the bottom of the buoy), air snorkel, level control, hoisting and backup battery etc. On the connection from anchoring to the surface one can may advantageously, periodically, place pressure sensors combined with flow sensors so that the tide generator can at any time place in the water column where the current is strongest.
Fig. 19FIG. 19
Her ses svirvelsystemet med den glidende kraftoverførelse. Svirvelsystemet er udført med trykleje 4, 5, 35 og bronzeglideleje 6. På bagsiden af tryklejehuset 5 er kulholderhuset 9 boltet på. Dette hus, der ikke er elektrisk ledende, bruges til at lede den generede energi fra generatoren gennem kobberringene 8, som sidder på den forreste roterende aksel 10, til kullene i kulholderene 39 og derfra i land til videre behandling.Here is the swirling system with the sliding power transmission. The swivel system is made with thrust bearing 4, 5, 35 and bronze slide bearing 6. On the back of the thrust bearing housing 5 the carbon holder housing 9 is bolted on. This non-electrically conductive housing is used to direct the generated energy from the generator through the copper rings 8, which sit on the front rotating shaft 10, to the coals in the coal holders 39 and from there ashore for further processing.
Akselen 10, der er hul så kablerne kan komme fra generatoren til kobberbanerne, er også beregnet til, at trykluft kan komme fra ventilerne 34 i kopflangen 2, gennem låsemøtrikken 3 og videre gennem gennemboringen 33 til forreste luftbeholder 13, generator 14, gearkasse 15 og bageste luftbeholder 18. Dette bevirker, at de eneste steder overtrykket skal forhindre adgang for fugt, er ved læbetætningen 42 på kulholderen samt ved bageste akseludgang. Den luft, der siver ud ved læbetætningen 42 sørger for, at tryklejet og forreste bronzebøs bliver tågesmurt og den luft, der siver ved bagerste aksel søger for smøring af lejer i generator samt bronzebøs og tandhjul i gearkassen.The shaft 10, which is hollow so that the cables can come from the generator to the copper webs, is also intended for compressed air to come from the valves 34 in the cup flange 2, through the lock nut 3 and further through the bore 33 to the front air reservoir 13, generator 14, gearbox 15 and rear air reservoir 18. This causes the only places the overpressure to prevent access for moisture is at the lip seal 42 on the carbon holder and at the rear axle outlet. The air seeping out of the lip seal 42 causes the thrust bearing and the front bronze bush to be fog lubricated and the air seeping at the rear axle seeking lubrication of bearings in the generator as well as bronze bush and gears in the gearbox.
Fig. 20-21FIG. 20-21
Her ses lænkeledet 1) som er den mekaniske forbindelse mellem tidevandsgeneratoren og monteringsarmene 22, 32 på slæden 23 eller ankerkæde 29/wirehejs 28. Lænkeleddet 1, der søger for, at tidevandsgeneratoren frit kan bevæge sig rundt i den del af det horisontale og vertikale plan, som måtte ønskes, består af:Here is shown the linkage 1) which is the mechanical connection between the tide generator and the mounting arms 22, 32 on the carriage 23 or anchor chain 29 / wire hoist 28. The linkage link 1 which allows the tide generator to move freely around that part of the horizontal and vertical plane which may be desired consists of:
Kopflangen 2, der er boltet sammen med tryklejehuset 5, beskytter den forreste akselende og holder lufttæt. Flangen er samtidig den ene part af det vandrette glideleje sammen med lænkeledet 1, der også, i forening med det lodrette glideleje for kæde/pylonmontering 21, udgør det lodrette glidelejeplan.The cup flange 2, which is bolted together with the pressure bearing housing 5, protects the front shaft end and holds airtight. The flange is at the same time one part of the horizontal sliding bearing together with the link joint 1, which also, in combination with the vertical sliding bearing for chain / pylon mounting 21, forms the vertical sliding bearing plane.
Fig. 22 - 23FIG. 22 - 23
Her ses generatorbunden 14 sammen med gearkassen 15 og bageste drivaksel 16. Som det ses, er de enkelte hoveddele i hele tidevandsgeneratoren boltet sammen med flanger og tætninger. Dette bevirker, at man i tilfælde af havari eller slitage forholdsvis nemt kan skifte en hoveddel ud, så eventuelt standby-tid minimeres og levetiden forlænges.Here, the generator bottom 14 is seen together with the gearbox 15 and rear drive shaft 16. As can be seen, the individual main parts of the entire tidal generator are bolted together with flanges and seals. This means that in the event of a breakdown or wear, a main part can be replaced relatively easily, so that any standby time is minimized and the service life is extended.
Henvisningstal 1 Lænkeled 2 Kopflange 3 Låsemøtrik 4 Trykleje 5 Tryklejehus 6 Bronzebøs til hovedaksel 7 Elektrisk isolering 8 Kobberbaner til aksel 9 Glidende kraftovergang/kulholdehus 10 Hovedaksel 11 Forreste rotorblade 12 Forreste opdriftsring 13 Forreste opdriftstank 14 Generator 15 Gearkasse 16 Bageste drivaksel 17 Bageste rotorblade 18 Bageste opdriftstank 19 Trekantsmonteringsbeslag 20 Bageste opdriftsring 21 Lodret glideleje for pylonmontering 22 Monteringsramme 23 Slæde for pylonmontering 24 Slæderulle 25 Monteringsbeslag for slæde 26 Pylon 27 Bøje med luftkompressor 28 Wirehejs 29 Ankerkæde 30 Anker 31 Lufthul til envejsventil i møtrik 32 Centerarm for pylonmontering 33 Luft/kabelgennemboring i aksel 34 Lufthul til envejsventil 35 T rykskive 39 Kulholdere 41 Elektrisk isolering af aksel 42 LæbetætningReference number 1 Link joint 2 Cup flange 3 Lock nut 4 Pressure bearing 5 Pressure housing 6 Bronze bushing for main shaft 7 Electrical insulation 8 Copper webs for shaft 9 Sliding power transfer / carbon housing 10 Main shaft 11 buoyancy tank 19 Triangular mounting bracket 20 Rear buoyancy ring 21 Vertical sliding bearing for pylon mounting 22 Mounting frame 23 Sled for pylon mounting 24 Sled roller 25 Mounting bracket for sledge 26 Pylon 27 Bending with air compressor 28 Wire hoist 29 Anchor chain 30 Anchor 31 Air hole for one way valve 32 shaft 34 One-way valve air hole 35 T washer 39 Carbon holders 41 Electrical shaft insulation 42 Lip seal
Claims (9)
Priority Applications (1)
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DKPA201000028A DK178830B1 (en) | 2010-01-14 | 2010-01-14 | Reversible duoprop tidal generator |
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DKPA201000028A DK178830B1 (en) | 2010-01-14 | 2010-01-14 | Reversible duoprop tidal generator |
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DK178830B1 true DK178830B1 (en) | 2017-03-06 |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2022218484A1 (en) * | 2021-04-14 | 2022-10-20 | Ringtved Svend Erik | Kinetic machine, powered by flowing water for the extraction of energy by pressurising water |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2004104411A1 (en) * | 2003-05-21 | 2004-12-02 | Hydra Tidal Energy Technology As | Arrangement for anchoring a floating structure |
GB2425328A (en) * | 2005-04-20 | 2006-10-25 | Marine Current Turbines Ltd | Locking arrangement for tubular support structure |
WO2007017629A1 (en) * | 2005-08-05 | 2007-02-15 | University Of Strathclyde | Turbine with coaxial sets of blades |
WO2008093037A1 (en) * | 2007-02-02 | 2008-08-07 | Robert Clunas | Apparatus for generating electrical power |
US20090230686A1 (en) * | 2007-10-18 | 2009-09-17 | Catlin Christopher S | River and tidal power harvester |
-
2010
- 2010-01-14 DK DKPA201000028A patent/DK178830B1/en not_active IP Right Cessation
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2004104411A1 (en) * | 2003-05-21 | 2004-12-02 | Hydra Tidal Energy Technology As | Arrangement for anchoring a floating structure |
GB2425328A (en) * | 2005-04-20 | 2006-10-25 | Marine Current Turbines Ltd | Locking arrangement for tubular support structure |
WO2007017629A1 (en) * | 2005-08-05 | 2007-02-15 | University Of Strathclyde | Turbine with coaxial sets of blades |
WO2008093037A1 (en) * | 2007-02-02 | 2008-08-07 | Robert Clunas | Apparatus for generating electrical power |
US20090230686A1 (en) * | 2007-10-18 | 2009-09-17 | Catlin Christopher S | River and tidal power harvester |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2022218484A1 (en) * | 2021-04-14 | 2022-10-20 | Ringtved Svend Erik | Kinetic machine, powered by flowing water for the extraction of energy by pressurising water |
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