WO2020008236A1 - Centrale électrique submersible fonctionnant avec les courants - Google Patents

Centrale électrique submersible fonctionnant avec les courants Download PDF

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Publication number
WO2020008236A1
WO2020008236A1 PCT/IB2018/054988 IB2018054988W WO2020008236A1 WO 2020008236 A1 WO2020008236 A1 WO 2020008236A1 IB 2018054988 W IB2018054988 W IB 2018054988W WO 2020008236 A1 WO2020008236 A1 WO 2020008236A1
Authority
WO
WIPO (PCT)
Prior art keywords
power plant
collector
tethered
buoyant
energy
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.)
Ceased
Application number
PCT/IB2018/054988
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English (en)
Inventor
modjtaba KABOODVANDY RAD
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to PCT/IB2018/054988 priority Critical patent/WO2020008236A1/fr
Publication of WO2020008236A1 publication Critical patent/WO2020008236A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • F03B13/26—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 tide energy
    • F03B13/264—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 tide energy using the horizontal flow of water resulting from tide movement
    • 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
    • F03B17/00—Other machines or engines
    • F03B17/06—Other machines or engines using liquid flow with predominantly kinetic energy conversion, e.g. of swinging-flap type, "run-of-river", "ultra-low head"
    • F03B17/061—Other machines or engines using liquid flow with predominantly kinetic energy conversion, e.g. of swinging-flap type, "run-of-river", "ultra-low head" with rotation axis substantially in flow direction
    • 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
    • F05B2240/10—Stators
    • F05B2240/13—Stators to collect or cause flow towards or away from turbines
    • 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
    • F05B2240/20—Rotors
    • F05B2240/24—Rotors for turbines
    • 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
    • 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
    • F05B2270/00—Control
    • F05B2270/10—Purpose of the control system
    • F05B2270/18—Purpose of the control system to control buoyancy
    • 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

  • This invention relates generally to water current power plants, and, more specifically to
  • submersible turbine with buoyant moored collector that can extract ocean, tidal and river current energies.
  • renewable energy is collected from renewable resources, which are naturally replenished on a human timescale, such as sunlight, wind, rain, tides, waves, and geothermal heat.
  • Marine energy could be a safe alternative to increasing energy demand.
  • No standard ocean stream generator has emerged as the clear winner, among a large variety of designs.
  • Six principal types of ocean current energy converter are recognize so far. They are horizontal axis turbines, vertical axis turbines, oscillating hydrofoils, venturi devices, Archimedes screws and tidal kites.
  • Both rotor types may be combined with any of the three main methods for supporting water-current turbines: floating moored systems, sea-bed mounted systems, and intermediate systems.
  • Sea bed-mounted mono-pile structures constitute the first-generation marine current power systems. They have the advantage of using existing and reliable engineering know-how, but they are limited to relatively shallow waters.
  • a submersible power plant comprises a tethered buoyant collector seamlessly coupled to an energy extraction unit that said energy extraction unit configured to extract energy from the flow of water provided by said tethered buoyant collector.
  • FIG. 1 is a perspective view of a submersible turbine with buoyant collector that tethered to two or more fixed point.
  • FIG.2A is a perspective view of an external watertight casing (shroud) that covered shaft-less turbine.
  • FIG.2B is a perspective view of an internal casing that covered shaft-less turbine.
  • FIG.2CJ is a perspective view of a shaft-less turbine.
  • FIG.2D is an exploded perspective view of a shaft-less turbine.
  • FIG.3A is a perspective view of an internal watertight casing of a turbine.
  • Fig.SB is a perspective view of an internal watertight casing of a turbine.
  • FIG.SB is a perspective view of the turbine.
  • FIG.4 is a side view of the submersible turbine with buoyant tethered collector.
  • FIG.5 is a perspective view of the submersible turbine with buoyant collector that tethered to one point (in order to possibility of rotation and using current energy in all directions).
  • FIG.6A is a top side view of the submersible turbine with buoyant collector (that operate in ocean current).
  • FIG.6B is a top side view of the submersible turbine with buoyant collector (that tethered to one point and could operate in all direction of currents).
  • FIG.7 is a perspective view of the submersible turbine with buoyant collector that tethered by a chain and anchor.
  • FIG.8 is a perspective view of the submersible turbine with buoyant tethered flexible collector (with buoyant intake and a set of turbine that connected to intake by collector and cables for withstand in high pressure).
  • FIG.9 is a perspective view of the submersible turbine with buoyant tethered collector in tidal current.
  • FIG.10 is a perspective view of the submersible turbine with tethered collector and without buoyancy tanks in tidal current that fixed on river-bed or seabed.
  • the articles“a,”“an,” and“the” are intended to mean that there are one or more of the elements.
  • the adjective“another,” when used to introduce an element is intended to mean one or more elements.
  • the terms“including” and“having” are intended to be inclusive such that there may be additional elements other than the listed elements.
  • a submersible turbine with buoyant collector 20 that tethered to anchor 24 on seabed.
  • the submersible turbine has a collector 20 consisting of a stiffened plate of material which can be durable and supportive for turbine generator.
  • the, wall of collector 20 is a metallic stiffened structure, such as steel, aluminum, etc.
  • the wall of collector 20 can consist of any other flexible or inflexible material such as plastic, composite, etc.
  • EMF and acoustic outputs may affect marine organisms. It should be noted that because these devices are in the water, the acoustic output can be greater than those created with offshore wind energy. Depending on the frequency and amplitude of sound generated by the ocean current or tidal energy devices, this acoustic output can have varying effects on marine mammals, particularly those who echolocate to communicate and navigate in the marine environment such as dolphins and whales. Since adding collector has advantages over traditional large blades ocean current devices. Ducted and shaft-less turbine have low acoustic outputs than traditional tidal turbines.
  • Fig. 1 shows a submersible turbine with buoyant collector 20 that it is positioned by a series of downwardly extending anchor cables 22 between anchors 24 and intake 27 of collector 20.
  • Collector 20 can have any forms and sections.
  • Said tethered buoyant collector could be made from light and buoyant material with or without buoyancy tanks.
  • Said anchor cables is disposed between the inlet and sides of said buoyant collector and a plurality of said anchors, in order to tolerate all strong forces and operate in one direction. Based on current specification in any depth like near seabed, middle depth, near sea surface.
  • the submersible turbine is preferably positioned a desired distance down the water's surface to maintain the equipment out of the reach of waves, ocean spray, etc.
  • each turbine is provided as shown with a plurality of cable 22 with thimble eye machine swaged 31 or other kind of end termination on cables, which are judiciously disposed in front of collector 20, bottom the casing of turbine generator 26, etc. Turbines will support by the necessary buoyancy tank 30.
  • This buoyancy tank 30 can be seamless with power plant or with cables joined to the submersible turbine (not shown).
  • buoyancy tanks 30 can be flooded or ballasted by opening the flood valves which are attached to each tank 30.
  • the submersible turbine is free to guidably descend to the ocean floor.
  • Each support anchor cable 22, is provided with a hold down cable assembly which extends from the cable winching equipment, downward to anchor 24.
  • each anchor cable 22 is connected to an anchor 24 in such manner that when tension is applied to the cables through cable winching mechanism, the respective cables will be pulled uniformiy tighter.
  • Ballast water is discharged by a suction pump and the flood valves are closed. When so released, the hull will slide to its place, because length of each cable and volume of buoyancy tank are designed and calculated. The hull will thereby be buoyed to its position at near of water's surface. As the submersible turbine pulled progressively downward into the water overcoming its own buoyancy by virtue of the tensioned hold down cables, the submersible turbine will become horizontal and more closely aligned in front of ocean current.
  • Anchors 24 rests on the seabed. Power cable 28 is attached to anchor cable 22 from the underside of the submersible turbine to the anchor 24. Also, Power cables 28 run from anchor 24 to destination that carries generated energy by the submersible turbine for consumption.
  • a turbine generator (or more) is disposed in the collector such that fluid moving through the collector motivates the turbine generator. Although turbine generator is disposed near outlet 29, turbine generator may be disposed at any position within collector 20. As shown in Figs. 2A through 2D, a shaft-less turbine that rest inside of watertight walls 34.
  • FIG. 2B shows 'watertight external casing 38 of turbine generator that rest inside watertight walls 34 with stiffener 36 and bolts 41 that inlet 33 of turbine generator join to collector 20 by bolts and nuts 40.
  • a shaft-less turbine generator includes a Main casing 46; long bolts and nuts 42; and Separable casing 44.
  • Shaft-less turbine could have stationary guide vanes 32 to direct the working fluid at the appropriate angle towards the propeller.
  • the distance between the downstream edges of the guide vanes 32 and the leading edges of the propeller will have a bearing on the size of fish that can safely pass through the turbine, and prevent from large fish, sharks, etc. to inter and injured by blades 52 of propellers.
  • Fig. 2D shows a shaft-less turbine generator which includes a shaft-less propeller 50 supported by the ball bearing 48.
  • Shaft-less propeller 50 have blades 52 fixed therein so that water will rotate the propeller 50 and thereby the shroud 54.
  • a stator 58 which in use is fixed to the main casing 46, and a rotor 56 which is constrained for rotation within the stator 58 thereby and generate power.
  • FIG. 3A shows watertight duct 61 of turbine generator that rest inside of watertight walls 34 with stiffener 36 and bolts 41 that inlet 33 of turbine generator join to collector 20 by bolts and nuts 40. Watertight duct 61 around the blades contains and controls the working fluid.
  • a turbine generator includes a blades 62; hub 64; fixed casing 68 of generator 72; strut 66; power cable 28; and conduit 60
  • Turbine could have stationary guide vanes to direct the working fluid at the appropriate angle towards the propeller (not shown).
  • Fig. 3C shows a sectional view of turbine generator which includes a generator 72; blades 62; and hub 64 supported by struts 66. Fixed casing 68 of generator 72 will joined to shaft 70 by tiltable pad 74. Turbine have blades 62 fixed therein so that water will rotate the hub 64 and thereby the shaft 70.
  • a generator 72 which in use is mounted on the fixed casing of generator 68, and a shaft 70 which is constrained for rotation within the generator 72 thereby and generate power.
  • Figs. 4 through 6 show the submersible turbine with buoyant tethered collector 20 that joined to single anchor 24.
  • Fig 4 shows cables are joined to the bottom side of submersible turbine that turbine can be fixed horizontally.
  • Fig 5 shows submersible turbines can be adapted to the variation in directions of ocean currents by utilize a single anchor 24 and/or a master-link 76. In this case (change in current direction) submersible turbines could change direction and stand in front of current and operate with maximum efficiency.
  • Power cable 28 could along anchor cable 22 is transferred to seabed and then to shore.
  • Said anchor cables can be disposed between said buoyant collector and a master-link, that a plurality of said anchor cables is disposed between said master-link and said anchors for make possibility to rotation in order to operate in all current directions if single anchor can’t tolerate forces (not shown).
  • the submersible turbine with buoyant collector 20 that tethered to one point and could operate in all direction of currents 79.
  • apparatus can turn and placed against current automatically. In this case apparatus always can use current energy in all directions.
  • the submersible turbine with buoyant collector that tethered by a chain 80 and anchor 82.
  • the submersible turbine could tethered with many cables to end of one heavy chain that is on seabed and frictional force between chain 80 and seabed could fix submersible turbines. Size of said anchor cables are determined before fix in water to operate. In another cases, only chain without anchor may be used.
  • a master link can be added that cable join to master link, afterward master link join to anchors on seabed (not shown),
  • a combination of said collectors and said energy extraction units may be used in said submersible power plant (not shown).
  • a plurality of said energy extraction units may be used in a single said collector (not shown).
  • the submersible turbine with buoyant tethered collector in tidal current includes a reciprocating collector 90; cases 26 of turbine generators; buoyant tanks 30; anchor cables 22; power cable 28; and anchors 24.
  • a reciprocating collector 90 for example, a reciprocating collector
  • cases 26 of turbine generators for example, a reciprocating collector
  • buoyant tanks 30 for example, a reciprocating collector
  • anchor cables 22 for example, a reciprocating cables
  • power cable 28 a cords of tethered collector in tidal current
  • anchors 24 Of course instead of adding buoyant tanks 30, light materials could be used.
  • Tidal currents have reciprocating nature.
  • This apparatus in two sides fixed to a number of point by anchor cables. Cables can fixed on riverbed, bridge truss, tree trunk, etc.
  • Said tethered reciprocating power plant is used in coastal waves as breakwater, or any other reciprocating currents.
  • the submersible turbine with tethered collector and without buoyancy tanks in tidal current that fixed on river-bed or seabed includes a base 92; a reciprocating collector 90; cases 26 of turbine generators; anchor cables 22; power cable 28; and anchors 24.
  • Rigid and stiffened components such as rods and joints, truss, etc. can be used in shallow water instead of cables, ropes, etc.
  • the collector of the submersible turbine can used every section and shape such as circular, rectangular, etc.
  • the submersible turbine can be made with a number of separate inlets or outputs. Energy is increased with increase in dimensions of collector that can have varied dimensions and formations

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Oceanography (AREA)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)

Abstract

L'invention se rapporte à l'énergie des courants marins, qui est à un stade précoce de développement. L'air et l'eau sont des fluides, mais ils possèdent tous deux des propriétés différentes. Tandis que les courants océaniques se déplacent lentement par rapport aux vitesses du vent typiques, ils transportent une grande quantité d'énergie en raison de la densité de l'eau. Une turbine submersible dotée d'un collecteur amarré flottant est un concept différent de la technologie des courants, étant donné que la direction des courants océaniques change en permanence. Dans ce mode de réalisation de l'invention, en raison de la possibilité de rotation sur un point, l'appareil étant attaché à ce point, la centrale électrique pourrait toujours fonctionner avec un rendement maximal et des collecteurs à grande admission en raison du caractère incompressible de l'eau pourraient extraire de l'énergie cinétique et de l'énergie potentielle dans de petites turbines efficaces. Ce mode de réalisation peut être utilisé avec succès à une échelle commerciale étant donné qu'un certain nombre de défis techniques et d'ingénierie, comme l'évitement de la cavitation, la prévention de la prolifération d'organismes marins et la fiabilité, sont relevés.
PCT/IB2018/054988 2018-07-06 2018-07-06 Centrale électrique submersible fonctionnant avec les courants Ceased WO2020008236A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/IB2018/054988 WO2020008236A1 (fr) 2018-07-06 2018-07-06 Centrale électrique submersible fonctionnant avec les courants

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IB2018/054988 WO2020008236A1 (fr) 2018-07-06 2018-07-06 Centrale électrique submersible fonctionnant avec les courants

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WO2020008236A1 true WO2020008236A1 (fr) 2020-01-09

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070231072A1 (en) * 2006-01-04 2007-10-04 Jennings Clifford A Submersible tethered platform for undersea electrical power generation

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070231072A1 (en) * 2006-01-04 2007-10-04 Jennings Clifford A Submersible tethered platform for undersea electrical power generation

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