WO2015090413A1 - Appareil de production d'énergie à partir de courants marins - Google Patents

Appareil de production d'énergie à partir de courants marins Download PDF

Info

Publication number
WO2015090413A1
WO2015090413A1 PCT/EP2013/077411 EP2013077411W WO2015090413A1 WO 2015090413 A1 WO2015090413 A1 WO 2015090413A1 EP 2013077411 W EP2013077411 W EP 2013077411W WO 2015090413 A1 WO2015090413 A1 WO 2015090413A1
Authority
WO
WIPO (PCT)
Prior art keywords
mooring line
line part
mooring
floating body
point
Prior art date
Application number
PCT/EP2013/077411
Other languages
English (en)
Inventor
Moritz Palm
Reinder Jorritsma
Willem Sievert Ganzinga
Original Assignee
Bluewater Energy Services B.V.
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 Bluewater Energy Services B.V. filed Critical Bluewater Energy Services B.V.
Priority to PCT/EP2013/077411 priority Critical patent/WO2015090413A1/fr
Publication of WO2015090413A1 publication Critical patent/WO2015090413A1/fr

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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B21/00—Tying-up; Shifting, towing, or pushing equipment; Anchoring
    • B63B21/50—Anchoring arrangements or methods for special vessels, e.g. for floating drilling platforms or dredgers
    • 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
    • F05B2240/917—Mounting on supporting structures or systems on a stationary structure attached to cables
    • 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
    • F05B2240/917—Mounting on supporting structures or systems on a stationary structure attached to cables
    • F05B2240/9176—Wing, kites or buoyant bodies with a turbine attached without flying pattern
    • 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 invention relates to an apparatus for generating power from sea currents, with a floating body, a lower structure comprising a support structure extending downwardly from said floating body and at least one water turbine supported by said support structure, and mooring lines of which a first end is attached to the apparatus and of which a second end is attached to a fixed point.
  • a known apparatus of this type the mooring lines are attached to the floating body (which floats on the surface of the sea and which generally will house the major part of equipment, such as mechanical and electric or electronic equipment) , for example to the bow and stern of the floating body.
  • a further disadvantage of such a situation is the increase of structural loads (such as bending stresses) in the apparatus .
  • the apparatus is characterized in that the first end of each mooring line at a bifurcation point is vertically bifurcated in an upper mooring line part and a lower mooring line part positioned substantially vertically above one another, of which the upper mooring line part is attached to the bow or stern of the floating body by means of a mooring connector, wherein the lower mooring line part is connected to the lower structure at a level below the level of the mooring connector .
  • Each mooring line now is attached both to the floating body and to a lower part of the lower structure.
  • the lower mooring line part is connected to the support structure.
  • such a connection may occur at (or close to) the level of the water turbine (s) .
  • the lower mooring line part is connected to the at least one water turbine.
  • drag forces generated by the water turbine (s) are directly transmitted to the mooring line without loading the remaining structure of the apparatus .
  • the apparatus comprises at least two horizontally spaced water turbines
  • the lower mooring line part may be horizontally bifurcated in at least two lower mooring line subparts which each are connected to one of said water turbines .
  • both lower mooring line subparts (due to their generally symmetrical position with respect to a central vertical plane of the apparatus) together define a virtual lower mooring line part which indeed is located vertically below the upper mooring line part.
  • the apparatus comprises two mooring lines attached to the bow and lower structure and to the stern and the lower structure, respec ⁇ tively.
  • the provision of a mooring line at the bow and a mooring line at the stern ensures a stable position of the apparatus under different environmental conditions ⁇ such as wind and currents) . It is noted, that it is conceivable too to provide even more mooring lines. When multiple mooring lines are provided, it is not necessary that these all ex- tend in one (substantially vertical) plane.
  • the lower structure is hingedly connected to the floating body for a rotation around a substantially horizontally extending transverse axis.
  • Such an embodiment allows the lower structure, and thus the water turbines supported thereon, to substantially maintain a desired (efficient) position with respect to the sea currents notwithstanding a change of position (tilt) of the floating body, for example due to wave motions.
  • a hinged connection between the floating body and the lower structure allows these apparatus parts to rotate substantially independently. This further reduces loads on the apparatus compared to a situation in which such a connection is rigid .
  • the lower structure can be fixed relative to the floating body in at least one rotational position, for example in at least an operational position in which it extends substantially vertically downwards from the floating body and a transport position in which it extends substantially horizontally along and in parallel to the floating body.
  • a hinged connection may have advantages, as explained before, there may exist situations in which such a hinged connection in an operational position better be locked.
  • the transport position reduces drag when the apparatus is towed to a location (for example a shipyard or harbour) for maintenance. Further it reduces the draught of the apparatus, allowing access to shallower waters. Also, in such a transport position the water turbines may protrude above the water level which makes maintenance thereof easi ⁇ er .
  • the length of the upper mooring line part between the bifurcation point and the mooring connector, the length of the lower mooring line part between the bifurcation point and its point of connection to the lower structure, the length of the floating body between the moor ⁇ ing connector and its point of connection to the lower structure and the length of the lower structure between its point of connection to the floating body and its point of connection to the lower mooring line part are such that those four lengths in the operational position of the appa ⁇ ratus substantially define a trapezoidal shape.
  • Such a shape may yield the best results in terms of load reduction and stabilisation of the position of the water turbines. It is noted, however, that the indication "trapezoidal" should not be considered in a narrow sense: slight deviations from such a shape are also conceivable.
  • said lengths are such that in the operational position of the apparatus the lower mooring line part extends subst r. tia11y horizontally .
  • the lower mooring line part extends in line with the water turbines and the forces acting thereon and/or generated thereby.
  • Figure 1 in a perspective view shows a first embodiment of an apparatus in accordance with the present invention
  • Figure 2 in a perspective view shows a second embodiment of an apparatus in accordance with the present in ⁇ vention
  • Figure 3 in a schematic side elevational view, shows a third embodiment of an apparatus in accordance with the present invention in an operational position and in a transport position .
  • the apparatus comprises a floating body 1.
  • the floating body 1 may be a vessel or a barge of any suitable configuration which in the illustrated embodiment on its top is provided with a deckhouse 2 accommodating mechanical, electric, electronic or other equipment. Means not indicated in detail may be provided for mooring another vessel to the floating body.
  • the apparatus further is provided with a lower structure comprising a support structure 3 extending downwardly from the floating body 1 and two water turbines 4 supported by said support structure 3.
  • the support structure comprises large diameter hollow tubes 5 extending inclined upwardly between each of the water turbines 4 and the floating body 1 as well as a horizontally extending tube member 6 extending between and connecting the water turbines 4.
  • the design of the support structure 3 may vary widely, among others dependent from the number of water turbines 4 supported by the support structure 3.
  • Figure 1 further illustrates a forward mooring line 7 and a rear mooring line 8 of which, as will be ex ⁇ plained below, a first end is attached to the apparatus and of which a second end (beyond the limits of the drawing and thus not shown) is attached to a fixed point, such as, for example, an anchor point on the bottom of the sea.
  • each mooring line 7,8 at a bifurcation point 9,10 is vertically bifurcated in an upper mooring line part 7', 8' and a lower mooring line part 7", 8" positioned substantially vertically above one another.
  • the upper mooring line part 7' of the first mooring line 7 is attached to the bow of the floating body 1 through a forward mooring connector 11, and the upper mooring line part 8' of the second mooring line 8 is attached to the stern of the floating body 1 through a rear mooring connector 12.
  • the mooring connectors 11 and 12 may be of a known design and capable of taking in and giving out lengths of mooring line.
  • the lower mooring line parts 1" and 8" each are connected to the tube member 6 of the support structure 3 (and thus attached to the apparatus at a level below the level of the mooring connectors 11,12 where the upper moor- ing line parts 1' and 8' are attached to the apparatus) .
  • the (or one of the) lower mooring line parts also could be connected to (any appropriate part of) the water turbines 4.
  • this has been represented in dotted lines 13 for the lower mooring line part which is provided at the rear of the apparatus. Because in this case there are two horizontally spaced water turbines 4, the lower mooring line part is horizontally bifurcated in at least two lower mooring line subparts 13.
  • FIG. 2 shows a different embodiment of the apparatus, in which the support structure comprises a single vertically extending strut 14 which at its lower end is provided with two wings 15 which each at an outer end support a water turbine 4.
  • the lower mooring line parts 7" and 8" are connected to a nacelle 16 attached to the lower end of the strut 14.
  • FIG. 2 further illustrates the possibility that the parts of the mooring lines 7,8 between the bifurcation points 9,10 and the fixed mooring point (not illustrated) comprise multiple (in the present case, two ) mooring lines .
  • Figure 3 illustrates an embodiment of an apparatus according to the present invention which, again, comprises a floating body 1 and a lower structure comprising a support structure 3 supporting at least one water turbine 4.
  • Figure 3a (which shows the apparatus in an operational position) further illustrates a forward mooring line 7 with upper mooring line part 7' and lower mooring line part 7", as well as a rear mooring line 8 with upper mooring line part 8 ' and lower mooring line part 8".
  • This embodiment of the apparatus differs from the previous embodiments in that the lower structure (specifically the support structure 3 ) is h i ngedly connected to the floating body 1 for a rotation around a substantially horizontally extending transverse axis 17.
  • the support structure 3 can be fixed in an operational position (figure 3a) in which it extends substantially vertically downwards from the floating body 1 and in which the water turbines 4 have the desired position with respect to the sea current from which energy has to be harvested, and a transport position (figure 3b, full lines) in which it has been rotated around the axis 17 (starting from the situation in fig 3a, illustrated in dotted lines in figure 3b) and extends sub- stantially horizontally along and in parallel to the floating body 1.
  • the apparatus In this transport position the apparatus can be towed to a harbour or shipyard for repairs or maintenance.
  • the water turbines 4 at least partially project above water level 18 and thus are readily accessi- ble.
  • the design may be such that the length of the upper mooring line part 7 ',8' between the respective bifurcation point 9,10 and the respective mooring connector 11,12, the length of the lower mooring line part 7", 8" between the respective bifurcation point 9,10 and its point of connection to the lower structure (for example support structure 3 or water turbine 4), the length of the floating body 1 between the mooring connector 11,12 and its point of connection (axis 17) to the lower structure (support structure 3) and the length of the lower structure between its point of connection (axis 17) to the floating body 1 and its point of connection to the lower mooring line part 7", 8" are such that those four lengths in the opera ⁇ tional position of the apparatus substantially define a trapezoidal shape.
  • said lengths may be such that in the operational position of the apparatus the lower mooring line part 7", 8" extends substantially horizontally (and thus substantially in the direction of forces generated by or working on the water turbines 4) .
  • any of the mooring lines or mooring line parts may be provided in two-fold for providing redundancy in view of increased safety, such that failure of a single mooring line or mooring line part will not affect the position or stabil- ity of the apparatus.

Landscapes

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

Abstract

Appareil destiné à produire de l'énergie à partir de courants marins, doté d'un corps flottant (1), d'une structure inférieure comprenant une structure de support (3) s'étendant vers le bas depuis ledit corps flottant (1) et au moins une turbine hydraulique (4) supportée par ladite structure de support (3), et de lignes d'amarre (7, 8) dont une première extrémité est attachée à l'appareil et dont une seconde extrémité est attachée à un point fixe. La première extrémité de chaque ligne d'amarre au niveau d'un point de bifurcation (9, 10) se sépare verticalement en une partie de ligne d'amarre supérieure (7', 8') et en une partie de ligne d'amarre inférieure (7'', 8'') positionnées de manière sensiblement verticale l'une au-dessus de l'autre, la partie de ligne d'amarre supérieure étant attachée à la proue ou à la poupe du corps flottant (1) à l'aide d'un élément de liaison d'amarrage (11, 12), la partie de ligne d'amarre inférieure étant reliée à la structure inférieure à un niveau situé sous le niveau de l'élément de liaison d'amarrage.
PCT/EP2013/077411 2013-12-19 2013-12-19 Appareil de production d'énergie à partir de courants marins WO2015090413A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/EP2013/077411 WO2015090413A1 (fr) 2013-12-19 2013-12-19 Appareil de production d'énergie à partir de courants marins

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2013/077411 WO2015090413A1 (fr) 2013-12-19 2013-12-19 Appareil de production d'énergie à partir de courants marins

Publications (1)

Publication Number Publication Date
WO2015090413A1 true WO2015090413A1 (fr) 2015-06-25

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Country Status (1)

Country Link
WO (1) WO2015090413A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2544282A (en) * 2015-11-10 2017-05-17 Oceanflow Dev Ltd System for deploying a semi-submerged floating turbine
WO2017155394A1 (fr) * 2016-03-07 2017-09-14 Tocardo International B.V. Dispositif permettant de transformer l'énergie cinétique d'eau s'écoulant horizontalement en un autre type d'énergie
KR102326397B1 (ko) * 2020-06-03 2021-11-12 조희남 경사형 회전체를 포함하는 조류발전장치 및 이의 설치 방법

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10036314A1 (de) * 2000-07-26 2002-02-07 Alstom Power Nv Mobiles Unterwasserkraftwerk
US20060269362A1 (en) * 2003-05-21 2006-11-30 Henriksen Svein D Arrangement for anchoring a floating structure
US20080258465A1 (en) * 2004-12-11 2008-10-23 Barry Johnston Water Current Powered Generating Apparatus
US20100181774A1 (en) * 2007-06-29 2010-07-22 Aquantis, Llc Multi-point tethering and stability system and control method for underwater current turbine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10036314A1 (de) * 2000-07-26 2002-02-07 Alstom Power Nv Mobiles Unterwasserkraftwerk
US20060269362A1 (en) * 2003-05-21 2006-11-30 Henriksen Svein D Arrangement for anchoring a floating structure
US20080258465A1 (en) * 2004-12-11 2008-10-23 Barry Johnston Water Current Powered Generating Apparatus
US20100181774A1 (en) * 2007-06-29 2010-07-22 Aquantis, Llc Multi-point tethering and stability system and control method for underwater current turbine

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2544282A (en) * 2015-11-10 2017-05-17 Oceanflow Dev Ltd System for deploying a semi-submerged floating turbine
GB2544282B (en) * 2015-11-10 2021-02-17 Ocean Flow Energy Ltd System for deploying a semi-submerged floating turbine
WO2017155394A1 (fr) * 2016-03-07 2017-09-14 Tocardo International B.V. Dispositif permettant de transformer l'énergie cinétique d'eau s'écoulant horizontalement en un autre type d'énergie
NL2016380B1 (en) * 2016-03-07 2017-09-19 Tocardo Int B V Device for transforming kinetic energy of water flowing in a horizontal direction into another kind of energy.
KR102326397B1 (ko) * 2020-06-03 2021-11-12 조희남 경사형 회전체를 포함하는 조류발전장치 및 이의 설치 방법

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