WO2013084545A1 - 浮体式風力発電装置および浮体式風力発電装置の係留方法 - Google Patents
浮体式風力発電装置および浮体式風力発電装置の係留方法 Download PDFInfo
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- WO2013084545A1 WO2013084545A1 PCT/JP2012/070493 JP2012070493W WO2013084545A1 WO 2013084545 A1 WO2013084545 A1 WO 2013084545A1 JP 2012070493 W JP2012070493 W JP 2012070493W WO 2013084545 A1 WO2013084545 A1 WO 2013084545A1
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- Prior art keywords
- column
- mooring
- floating body
- wind power
- floating
- Prior art date
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Classifications
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B1/00—Hydrodynamic or hydrostatic features of hulls or of hydrofoils
- B63B1/02—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement
- B63B1/10—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with multiple hulls
- B63B1/107—Semi-submersibles; Small waterline area multiple hull vessels and the like, e.g. SWATH
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- 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
- B63B21/18—Stoppers for anchor chains
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- 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
- B63B21/20—Adaptations of chains, ropes, hawsers, or the like, or of parts thereof
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B39/00—Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude
- B63B39/02—Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude to decrease vessel movements by displacement of masses
- B63B39/03—Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude to decrease vessel movements by displacement of masses by transferring liquids
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- 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
- F03D—WIND MOTORS
- F03D13/00—Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components
- F03D13/20—Arrangements for mounting or supporting wind motors; Masts or towers for wind motors
- F03D13/25—Arrangements for mounting or supporting wind motors; Masts or towers for wind motors specially adapted for offshore installation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B1/00—Hydrodynamic or hydrostatic features of hulls or of hydrofoils
- B63B1/02—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement
- B63B1/10—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with multiple hulls
- B63B1/12—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with multiple hulls the hulls being interconnected rigidly
- B63B2001/128—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with multiple hulls the hulls being interconnected rigidly comprising underwater connectors between the hulls
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- 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
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- 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
- F05B2240/93—Mounting on supporting structures or systems on a structure floating on a liquid surface
-
- 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
- F05B2240/95—Mounting on supporting structures or systems offshore
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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
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
-
- 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
- Y02E10/70—Wind energy
- Y02E10/727—Offshore wind turbines
Definitions
- the present disclosure relates to a floating wind power generator that includes a floating body that floats on the water surface and a wind power generator, and is moored on the sea or the like by a mooring line, and a mooring method for the floating wind power generator.
- Such a floating wind power generator includes a floating body that floats on the water surface and a wind power generator that is installed on the floating body. Then, as described in Patent Documents 1 and 2, for example, the anchor installed on the bottom of the water and the floating body are connected by a mooring line, so that the floating body on which the wind power generator is installed is moored on the sea or the like.
- At least one embodiment of the present invention has been made in view of the above-described problems, and is a floating wind power generator capable of stably mooring a floating body against a drifting force and a rotating moment acting on the floating body. It is an object of the present invention to provide a device and a mooring method for the floating wind power generator.
- At least one embodiment of the present invention achieves the above objectives by: With wind generators, A first column located on the windward side of the main wind direction and provided with the wind power generator; a second column and a third column located on the leeward side of the main wind direction from the first column; A floating body formed including one lower column and a second column, and two lower halves connecting the first column and the third column, respectively.
- a plurality of mooring lines connecting the floating body and an anchor fixed to the water bottom in a catenary manner, and a floating wind power generator comprising: At least two of the plurality of mooring lines are connected to the first column, at least one of the plurality of mooring lines is connected to the second column, and among the plurality of mooring lines At least one connected to the third column; Each of the plurality of mooring lines is arranged to extend radially from the floating body so as not to cross each other in plan view.
- At least two mooring lines are connected to the first column located on the windward side of the main wind direction, and the second column and the third column located on the leeward side of the main wind direction. At least one mooring line is connected to each column. Therefore, at least two mooring lines connected to the first column resist the drifting force in the main wind direction acting on the floating body, and at least one mooring connected to the second column and the third column, respectively.
- the rope resists the drifting force in other directions acting on the floating body and the rotational moment centered on the first column, and the floating body is stably moored against the drifting force and rotational moment acting on the floating body. can do.
- main wind direction means the main wind direction at the point.
- the wind direction varies depending on the season and weather, and the wind direction may be different between morning and night in the day, but especially in places where wind turbines are installed, There is a specific wind direction that can be said. In this specification, this specific wind direction is referred to as “main wind direction”.
- the at least one mooring line connected to the second column passes through the bisector at the intersection of the two lower halves, and is perpendicular to the bisector and passes through the center of the second column.
- An anti-rotation mooring line extending toward the first column side region defined by the straight line;
- the at least one mooring line connected to the third column passes through the bisector at the intersection of the two lower halves, and is perpendicular to the bisector and passes through the center of the third column.
- An anti-rotation mooring line extending toward the first column side region defined by the straight line.
- the first column is the center.
- the floating body can be moored in a stable state against the rotating moment.
- the anti-rotation mooring line connected to the second column extends in a direction perpendicular to the axial direction of the first lower hull connecting the first column and the second column
- the anti-rotation mooring line connected to the third column extends in a direction perpendicular to the axial direction of the second lower hull connecting the first column and the third column.
- the anti-rotation mooring lines connected to the second column and the third column extend in a direction perpendicular to the axial direction of the first lower hull and the second lower hull, respectively.
- the floating body can be moored in a more stable state with respect to the rotational moment about the first column.
- a plurality of mooring lines are connected to the second column and the third column, respectively.
- the floating body can be moored more stably against the drifting force and the rotational moment acting on the floating body.
- the floating body is not immediately unstable due to the drifting force or the rotational moment, and the cutting risk can be reduced.
- Guide portions are provided on the side surfaces of the first column, the second column, and the third column to guide the mooring lines to be connected in the vertical direction along the side surfaces of the column.
- the mooring line that connects the floating body and the anchor in a catenary shape is connected obliquely to the side of the column, but if such a guide is provided on the side of the column, the mooring line is connected to the side of the column. You can guide along.
- the mooring lines provided on the side surfaces of the first column, the second column, and the third column above the guide portion and guided by the guide portion are prevented from falling downward.
- a stopper to The stopper is A projecting member provided so as to project from the side surface of the column, and a hole portion through which the mooring line can be inserted is formed so that the opening gradually increases upward; And a wedge member that can be fitted into the hole from above while a mooring line is inserted into the hole.
- the guide portion is a fair lead that is disposed so as to sandwich the mooring line with a side surface of the column.
- the mooring line has a chain shape in which a plurality of annular materials are connected,
- the fairlead is A pair of support members provided to project from the side surface of the column;
- a rotating body that is rotatably supported between the pair of support members, and has a plurality of protrusions formed on the outer periphery of the rotating body at a pitch corresponding to the length of the annular material along the rotation direction;
- Including The convex portion is provided with a slit through which the annular material can be inserted, and the mooring line is guided in the vertical direction along the side surface of the column by inserting the annular material into the slit.
- the mooring line can be moved without causing the mooring line to shift by inserting an annular material into the slit of the convex portion formed on the outer periphery of the rotating body. It can be surely guided.
- a pressing portion is provided on the upper surface of the first column, the second column, and the third column to press and fix the mooring line against the upper surface.
- the mooring line guided along the side surface of the column by the guide portion can be pressed against the upper surface of the column and fixed.
- a storage space for storing the mooring line having an opening on the upper surface of the column is provided inside the first column, the second column, and the third column.
- a water storage space configured to be capable of adjusting the amount of stored ballast water is provided inside the floating body.
- the water storage space provided inside the floating body is divided into a plurality of sub rooms in the longitudinal direction of the lower hull, and each of the plurality of sub rooms is configured to be capable of injecting and discharging ballast water.
- Structuring in this way makes it possible to appropriately adjust the amount of ballast water stored in each subroom divided in the longitudinal direction of the lower hull, so that the position of the center of gravity of the floating body can be controlled.
- a rope is connected to the end of the mooring line connected to the column.
- the mooring line can be easily handled when the mooring line is arranged along the side surface of the column via the guide part.
- At least one embodiment of the present invention provides: With wind generators, A floating body formed by connecting a first column on which the wind power generator is installed to a second column and a third column via two lower halves, A plurality of mooring lines connecting the floating body and an anchor fixed to the bottom of the water, Orienting the floating body such that the first column is located on the windward side of the main wind direction, and the second column and the third column are located on the leeward side of the main wind direction from the first column; Connecting at least two of the plurality of mooring lines to the first column in a catenary manner; Connecting at least one of the plurality of mooring lines to the second column in a catenary manner; Connecting at least one of the plurality of mooring lines to the third column in a catenary manner; The plurality of mooring lines are arranged radially so as not to cross each other.
- the first column is positioned on the windward side of the main wind direction
- the second column and the third column are positioned on the leeward side of the main wind direction from the first column.
- the floating wind turbine generator moored by such a method resists the drifting force acting on the floating body by at least two mooring lines connected to the first column, and the second column and the third column respectively. It becomes the structure which resists the rotational moment which acts on a floating body by the at least 1 mooring line to connect, and a floating body is moored stably with respect to a drifting force and a rotational moment.
- the at least one mooring line connected to the second column passes through the bisector at the intersection of the two lower halves, and is perpendicular to the bisector and passes through the center of the second column.
- the at least one mooring line connected to the third column passes through the bisector at the intersection of the two lower halves, and is perpendicular to the bisector and passes through the center of the third column.
- An anti-rotation mooring line extending toward the first column side region defined by the straight line.
- the first column is the center.
- the floating body can be moored in a stable state against the rotating moment.
- the anti-rotation mooring line connected to the second column is connected to extend in a direction perpendicular to the axial direction of the first lower hull connecting the first column and the second column.
- the anti-rotation mooring line connected to the third column is connected to extend in a direction perpendicular to the axial direction of the second lower hull connecting the first column and the third column. Is done.
- the anti-rotation mooring lines connected to the second column and the third column are connected so as to extend in a direction perpendicular to the axial direction of the first lower hull and the second lower hull, respectively.
- the floating body can be moored in a more stable state with respect to the rotational moment about the first column.
- a plurality of mooring lines are connected to the second column and the third column, respectively.
- the anchor connected to the mooring line is sunk to a predetermined position on the bottom of the water by a ship different from the floating body, and the anchor that has been sunk by pulling the mooring line is Fix to the bottom of the water.
- the anchor can be fixed at a predetermined position on the bottom of the water without a crane mounted on the floating body itself, and the floating body and the anchor can be connected by a mooring line. Work costs can be reduced.
- the plurality of mooring lines are connected to each other, and the connected plurality of mooring lines are collectively pulled to fix the plurality of settled anchors to the water bottom.
- the holding force of the mooring line is measured based on the output torque of the power source that pulls the mooring line or the tension of the mooring line being towed.
- a floating wind power generator capable of stably mooring a floating body against a drifting force and a rotating moment acting on the floating body, and a mooring method for the floating wind power generator. Can be provided.
- FIG. 5 is a cross-sectional view of FIG. 4 viewed from the AA direction. It is sectional drawing which expanded and showed the a part of FIG. It is sectional drawing which showed the connection channel
- FIG. 1 is a perspective view showing a state in which a floating wind power generator according to an embodiment of the present invention is moored on the sea.
- FIG. 2 is a side view of the floating wind power generator of FIG. 1 viewed from the side.
- the floating wind power generator 1 according to an embodiment of the present invention includes a floating body 20 that floats on the water surface and a wind power generator 10 that is installed on the floating body 20.
- the wind power generator 10 includes a nacelle 10a, a tower 10b standing on the upper surface of the first column 22a, and a blade 10c rotatably attached to the nacelle 10a. And.
- the nacelle 10a is supported by the tower 10b so as to be pivotable about the axial direction of the tower 10b, and orients the blade 10c toward the windward side according to the wind direction. Then, power is generated by a generator (not shown) by rotating the blade 10c receiving the wind.
- the floating body 20 includes three quadrangular columnar columns 22 (22a, 22b, and 22c) arranged at the vertex positions of the virtual triangle in plan view, and the first column 22a and the second column 22a.
- the three columns 22 and the two lower halves 24 form a substantially V shape in plan view.
- the wind power generator 10 mentioned above is installed in the upper surface of the 1st column 22a located in the middle of planar view substantially V shape.
- the first lower hull 24a and the second lower hull 24b intersect at right angles and are symmetrical with respect to the bisector of the angle of intersection between the first lower hull 24a and the second lower hull 24b.
- the above-described three columns 22 are arranged at the vertex positions of the virtual right isosceles triangle forming the following.
- a third lower hull that connects the second column 22b and the third column 22c may be further provided. Further, the first lower hull 24a and the second lower hull 24b may be connected by a reinforcing beam member.
- the floating body 20 has a water storage space for storing ballast water therein. Then, ballast water is poured into the water storage space, and as shown in FIG. 2, the water surface is moored on the water surface with the draft surface WL positioned above the upper surface of the lower hull 24.
- the floating body 20 is arranged so that the first column 22 a on which the wind power generator 10 is installed is positioned on the windward side with respect to the main wind direction W.
- the on the other hand, the 2nd column 22b and the 3rd column 22c are arranged so that it may be located in the leeward side of the main wind direction W rather than the 1st column 22a.
- the first column 22a in which the wind power generator 10 is installed so as to be positioned on the windward side of the main wind direction W, the wind power generator that tends to tilt toward the back side under the wind load. 10 stability can be improved.
- a plurality of mooring lines 34 connected to an anchor 32 fixed to the water bottom E are connected to the floating body 20 in a catenary shape so as to draw a suspension curve.
- the floating body 20 is moored on the sea by the anchor 32 and the mooring line 34, resisting the drifting force and the rotational moment acting on the floating body 20.
- FIG. 3 is a plan view showing the arrangement of mooring lines of the floating wind power generator according to one embodiment of the present invention.
- two mooring lines 34a and 34b are connected to the first column 22a.
- the two mooring lines 34a and 34b extend in directions along the axial direction of the first lower hull 24a and the second lower hull 24b, respectively.
- the mooring lines 34c, 34d, 34e and the mooring lines 34f, 34g, 34h are connected to the second column 22b and the third column 22c, respectively.
- a total of eight mooring lines 34a to 34h are connected in the entire floating body 20.
- Each of these eight mooring lines 34 is arranged extending radially from the floating body 20 so as not to cross each other in plan view.
- At least two mooring lines 34 are connected to the first column 22a disposed on the windward side of the main wind direction W, and the second column is located on the leeward side of the main wind direction W. At least one mooring line 34 is connected to each of 22b and the third column 22c. In this way, at least two mooring lines 34 connected to the first column 22a resist the drifting force F in the direction of the main wind direction W acting on the floating body 20, and the second column 22b and the third column A structure in which at least one mooring line 34 connected to each column 22c resists the drifting force F 'in the other direction acting on the floating body 20 and the rotational moments M and M' about the first column 22a.
- the floating body 20 is stably moored with respect to the drifting forces F and F ′ acting on the floating body 20 and the rotational moments M and M ′.
- At least one mooring line 34 connected to the second column 22b described above is an intersection of the first lower hull 24a and the second lower hull 24b. Extending toward the region ⁇ on the first column 22a side defined by the bisector a and the straight line b orthogonal to the bisector a and passing through the center of the second column 22b.
- the existing mooring line 34c (anti-rotation mooring line) is included.
- at least one mooring line 34 connected to the third column 22c described above is defined by a straight line c orthogonal to the bisector a and passing through the center of the third column 22c.
- mooring line 34h anti-rotation mooring line
- the mooring line 34 rotation prevention mooring line
- the floating body 20 is stably anchored.
- the mooring line 34 (anti-rotation mooring line) extending toward the region ⁇ and the region ⁇ described above corresponds to the lower hull 24a and the lower hull 24b. If it extends in a direction perpendicular to the axial direction, when the floating body 20 tries to rotate around the first column 22a, it is moored in a direction 180 degrees opposite to the tangential direction of the rotational force. Since the rope 34 extends, it can resist the rotating moments M and M ′ more effectively, and the floating body 20 is moored in a more stable state.
- a plurality of mooring lines 34 are connected to the second column 22b and the third column 22c, respectively, so that the drifting forces F and F ′ acting on the floating body 20 and the rotation
- the floating body 20 can be moored more stably with respect to the moments M and M ′, and even when one of the plurality of mooring lines 34 is cut, the floating body 20 immediately becomes a drifting force F, F ′, An unstable state does not occur due to the rotational moments M and M ′.
- the mooring when a plurality of mooring lines 34 are respectively connected to the second column 22b and the third column 22c, the mooring extends in a direction orthogonal to the axial direction of the lower hull 24.
- the mooring rope 34 (34d, 34e, 34a, 34e, 34b) extends along the axial direction of the lower hull 24 toward the regions ⁇ ′, ⁇ ′ opposite to the first column 22a. 34f, 34g) may be connected.
- FIG. 4 is a plan view showing a floating body of the floating wind turbine generator according to an embodiment of the present invention.
- FIG. 5 is a cross-sectional view taken along the line AA in FIG.
- FIG. 6 is an enlarged cross-sectional view of part a in FIG. 7 is a cross-sectional view taken along the line BB in FIG.
- the column 22 and the lower hull 24 described above are formed in a hollow cross-sectional shape, and as shown in FIGS. 4 and 5, a water storage space for storing ballast water is provided inside the column 22 and the lower hull 24. Is formed.
- the water storage space formed in the lower hull 24 is divided into a plurality of sub rooms (water storage rooms) 26 in the longitudinal direction of the lower hull 24.
- sub rooms water storage rooms
- FIGS. 4 and 5 three sub-rooms (26a to 26c and 26d to 26f) are formed in the first lower hull 24a and the second lower hull 24b, respectively, in the longitudinal direction. .
- two sub rooms 26i and 26h divided in the vertical direction are formed in the third column 22c.
- two sub-rooms divided in the vertical direction are also formed in the second column 22b.
- a pump chamber 28 is formed in the first column 22a in addition to the water storage room 26g.
- a pump 50 is disposed in the pump chamber 28.
- the pump 50 is connected to each sub room 26 of the water storage room 26 through the discharge pipe 50a. Then, by driving the pump 50, the ballast water stored in each subroom 26 is discharged to the outside of the floating body 20, and the ballast water stored in each subroom 26 is moved to another subroom 26. Can be done.
- each subroom 26 is provided with a gate 52 for communicating or closing the subroom 26 and the outside.
- the gate 52 is provided at a position below the draft surface before the floating body 20 sinks so that ballast water can be easily poured from the outside.
- Each subroom 26 is provided with an air valve 53 at a position above it. When the gate 52 is opened, air in the sub room 26 is discharged from the air valve 53 and ballast water is poured into the sub room 26.
- the above-described pump 50, discharge pipe 50a, gate 52, and air valve 53 provide ballast water not only to the entire water storage room 26 but also to the plurality of sub rooms 26. Configured to allow injection and discharge.
- the sinking degree of the floating body 20 is changed by adjusting the amount of ballast water, and drifting force F, F ' It is possible to appropriately adjust the sinking state of the floating body 20 so that the floating body 20 is stabilized against the rotational moments M and M ′.
- the ballast water is largely biased in one direction inside the floating body 20, and the balance of the center of gravity of the floating body 20 is lost and the floating body 20 is It can be prevented from tilting greatly. Further, since the ballast water can be injected into and discharged from the plurality of subrooms 26, the center of gravity of the floating body can be controlled by appropriately adjusting the amount of ballast water in each subroom 26.
- the floating body 20 in a state where the lower hull 24 is completely submerged is difficult to return to the original state once the posture is inclined due to an external force such as a wave. For this reason, the present configuration in which the water storage room 26 inside the lower hull 24 is divided into a plurality of sub rooms 26 in the longitudinal direction is effective in securing the stability of the floating body 20.
- the electric chamber 60 provided at the base of the tower 10 b has an attitude detection sensor 56 that detects the inclination of the floating body 20 and the pump 50 described above.
- a control device 58 for controlling the operation is arranged. Then, when the posture detection sensor 56 detects a predetermined inclination or more in the floating body 20, the pump 50 operates and the amount of ballast water in each sub-room 26 is automatically controlled so that the floating body 20 returns to the horizontal. .
- a sub-room 26 in which ballast water is stored and a communication passage 54 partitioned watertight are formed inside the lower hull 24.
- the communication passage 54 can be constituted by a pipe. This communication passage 54 allows people and objects to move between the columns 22 even when ballast water is stored in the subroom 26.
- a marker lamp 23 is provided on the upper surface of the column 22, and plays a role of informing the existence of the facility to a ship or the like passing nearby.
- an entrance 44 for accessing the inside of the column 22 is provided on the side surface of the three columns 22.
- a person or an object is transported to the floating wind turbine generator 1 moored at the sea or the like, it moves from the land to the floating wind turbine generator 1 by the ship 40a, the submersible craft 40b, etc. Access the inside.
- the entrance 44 is provided at a position above the connecting portion between the column 22 and the lower hull 24. Above the lower hull 24, the water depth to the water surface is shallower than other places, and is less susceptible to waves. For this reason, by providing the entrance 44 above the connection portion with the lower hull 24 on the side surface of the column 22, access to the floating wind turbine generator 1 by the ship 40a and the submersible craft 40b is facilitated.
- the mooring line 34 described above does not intersect with the lower hull 24 and extends in a direction away from the lower hull 24, so that the access to the entrance 44 of the floating wind turbine generator 1 is performed. This is not an obstacle to access for the ship 40a and the submersible craft 40b.
- a lifting device 42 such as a crane is provided on the upper surface of the column 22 above the entrance 44. If such a lifting device 42 is provided above the entrance 44, it is possible to easily carry in the work of carrying the load loaded on the ship 40 a into the column 22.
- the entrance 44a is provided in the position above the draft surface WL of the state where the lower hull 24 was completely submerged.
- the entrance 44a by providing the entrance 44a at a position above the draft surface WL, it becomes easy for the ship 40a to access the inside of the column 22.
- a pair of protrusions 62, 62 extending in the vertical direction protrude from the side surface of the column 22 provided with the entrance 44a.
- the pair of protrusions 62 and 62 are arranged at a distance from each other so that the bow portion of the ship 40 a in a state where the bow tip is in contact with the side surface of the column 22 is accommodated therebetween.
- An elastic member 41 such as rubber is attached to the bow portion of the ship 40a to protect the bow portion.
- the bow portion can be pushed into and berthed between the projections 62 in a state in which the vessel 40a is propelled, so that the vessel caused by waves or the like The influence on 40a is reduced, and access to entrance 44a becomes easy.
- the wave-breaking wall 64 is arrange
- the wave preventing wall 64 is configured to be movable so as not to obstruct access to the ship 40a.
- the wave preventing wall 64 is normally disposed along the side of the column 22 so as not to obstruct the access of the ship 40a, and surrounds the entrance 44a when the ship 40a contacts the side of the column 22. Moving. And it plays the role which suppresses that the ship 40a rocks by a wave.
- the entrance 44b is provided at a position below the draft surface WL in a state where the lower hull 24 is completely submerged.
- the entrance 44b is configured as a hatch to which the submersible craft 40b can be connected in a watertight state.
- the entrance 44b can be accessed while the submersible craft 40b is submerged. Since the submersible craft 40b submerged underwater is not affected by waves and the like, it is advantageous when accessing the floating wind turbine generator 1 during stormy weather.
- the entrance 44b is provided so as to be positioned below the draft surface WL at the time of mooring, and is formed so as to allow the submersible craft 40b to pass therethrough.
- a storage room 70 capable of storing the submersible craft 40b that has passed through the entrance 44b is formed inside the column 22.
- the storage room 70 includes a first room 72 partitioned from the exterior by the entrance 44b and a second room 74 partitioned by the first room 72 and the water stop gate 76.
- the entrance 44b is closed. Then, by opening the water stop gate 76 with the entrance 44b closed, the submersible craft 40b can enter the pool formed in the second room 74.
- the entrance 44 b can be accessed while the submersible boat 40 b is submerged. Since the entire boat 40b can be stored, a large number of personnel, cargo and the like can be easily carried into the column 22.
- a guide portion that guides the mooring lines 34a and 34b in the vertical direction along the side surface of the first column 22a on the side surface of the first column 22a. 80 is provided.
- a stopper 90 is provided above the guide portion 80 to prevent the mooring lines 34a and 34b guided by the guide portion 80 from falling downward.
- the pressing part 66 which presses and fixes the mooring lines 34a and 34b is provided in the upper surface of the 1st column 22a.
- One guide portion 80, one stopper 90, and one pressing portion are provided corresponding to each mooring line 34 connected to each of the three columns 22.
- FIGS. 11A to 11C are views showing a guide portion according to an embodiment of the present invention.
- FIG. 11A is a side view
- FIG. 11B is a front view
- FIG. 11C is a top view.
- the guide portion 80 according to the embodiment of the present invention is a fair lead 80a that is disposed so as to sandwich the mooring line 34 between the column 22 and the side surface.
- the mooring line 34 has a chain shape in which a plurality of annular members 35 are connected in the vertical and horizontal order.
- the fair lead 80 a includes a pair of support members 82 provided so as to project from the side surface of the column 22, and a rotating body 84 that is rotatably supported between the pair of support members 82. Further, on the outer periphery of the rotating body 84, a plurality of pitches corresponding to the length of the annular member 35, for example, a pitch corresponding to the distance P between the centers of the annular members 35 separated as shown in FIG.
- the convex portion 86 is formed. As shown in FIG. 11B, the convex portion 86 is provided with a slit 86a at the center portion when viewed from the front, and an annular material 35 oriented in the longitudinal direction with respect to the rotating body 84 is interposed in the slit 86a.
- the annular body 35 that is oriented laterally with respect to the rotating body 84 is accommodated in the flat portion 87 between the adjacent convex portions 86 on the outer periphery of the rotating body 84.
- the mooring line 34 is guided in the vertical direction along the side surface of the column 22 by inserting the annular member 35 into the slit 86 a of the convex part 86.
- the fair lead 80 a as the guide portion 80 described above, the mooring line 34 that extends obliquely in a catenary shape from the anchor 32 toward the side surface of the column 22 extends along the side surface of the column 22. Smooth guidance in the vertical direction.
- the annular member 35 is inserted into the slit 86a of the convex part 86 formed on the outer periphery of the rotating body 84 of the fair lead 80a, so that the mooring line 34 is surely guided without being displaced. Is done.
- FIG. 12A is a cross-sectional view showing a stopper in one embodiment of the present invention.
- the stopper 90 includes a projecting member 92 provided so as to project from the side surface of the column 22, and wedge members 96a and 96b having a wedge shape.
- the projecting member 92 is formed with a hole portion 94 whose opening gradually increases upward, and the mooring line 34 is inserted into the hole portion 94. Then, with the mooring line 34 inserted into the hole 94, the wedge members 96a, 96b are fitted from above the hole part 94, so that the wedge member 96a, 96b and the mooring line 34 are frictional due to the so-called wedge effect.
- the mooring line 34 is fixed by force, and the mooring line 34 is prevented from falling downward.
- wedge members 96a and 96b obtained by dividing a hook-shaped member having a shape that can be fitted into the hole 94 from above are divided into two. Are preferably used.
- FIG. 13 is a cross-sectional view showing a part of the upper surface of the column in one embodiment of the present invention.
- the upper surface of the column 22 is provided with a pressing portion 66 that is fastened to the upper surface of the column 22 by a bolt 66 a with the mooring cable 34 sandwiched between the upper surface of the column 22. Yes.
- the mooring line 34 is pressed against the upper surface of the column 22 with a predetermined pressing force F by the pressing portion 66. If such a pressing portion 66 is provided, the mooring line 34 guided along the side surface of the column 22 is fixed to the upper surface of the column 22, so that the end of the mooring line 34 freely plays. Can be prevented.
- a storage space 68 for storing the mooring line 34 is provided inside the column 22.
- the storage space 68 has an opening formed in the upper surface of the column 22 and stores an excess portion on the end side of the mooring line 34 fixed by the pressing portion 66.
- a rope 67 is connected to the end of the mooring line 34 that is connected to the column. In this way, if the rope 67 is connected to the end of the mooring line 34, the mooring line 34 can be easily handled when the mooring line 34 is arranged along the side surface of the column 22 via the guide part 80. It becomes.
- FIG. 14 is a diagram illustrating a state where the floating wind turbine generator is towed.
- FIG. 15 is a diagram showing a process of fixing the anchor at a predetermined position on the bottom of the water.
- FIG. 16 is a diagram illustrating a process of connecting a mooring line and a floating body.
- the floating body 20 is assembled on the ground or in a state of being berthed, and the wind power generator 10 is installed thereon. Then, as shown in FIG. 14, for example, four towed ships 15 are towed to a mooring planned place at sea.
- the anchor 32 connected to the mooring line 34 described above is sunk to a predetermined position on the bottom of the water by a ship different from the floating body 20, for example, the crane ship 16 (sedimentation step).
- the mooring line 34 is pulled by the crane ship 16, and the anchored anchor 32 is fixed to a water bottom (traction process).
- the grasping force of the mooring line 34 is measured based on the output torque of the power source that pulls the mooring line 34 or the tension of the mooring line 34 that is being pulled.
- the parking force can be easily measured, and it can be easily confirmed whether or not the anchor 32 is properly fixed to the bottom of the water.
- the anchoring 32 of the plurality of mooring lines 34 is fixed at a predetermined position on the bottom of the water by repeating the above-described sedimentation process and traction process for each of the plurality of mooring lines 34.
- the plurality of mooring lines 34 are connected to each other and the connected plurality of mooring lines 34 are pulled together by the crane ship 16, a plurality of anchored anchors 32 can be collectively fixed to the water bottom. The number of towing operations can be reduced, and mooring operations can be made more efficient and cost reduced.
- the rope 67 connected to the end of the mooring line 34 is connected to the buoy, and the buoy is floated at the planned mooring location. Then, the mooring line 34 connected to the buoy is recovered from the floating body 20 towed to the planned mooring point, and the recovered mooring line 34 is connected to the column 22 as shown in FIG. Finally, by pouring ballast water into the water storage space inside the floating body 20, the floating wind turbine generator 1 is moored at sea or the like with the draft surface WL positioned above the upper surface of the lower hull 24. .
- the anchor 32 is fixed at a predetermined position on the bottom of the water without connecting a crane to the floating body 20 itself, and the floating body 20 and the anchor 32 are connected by the mooring line 34.
- mooring work can be made more efficient and the cost of mooring work can be reduced.
- At least one embodiment of the present invention can be suitably used for a floating wind power generator installed on the sea or the like and a mooring method for the floating wind power generator.
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Abstract
Description
風力発電機と、
主風向の風上側に位置し、前記風力発電機が設置された第1のコラムと、該第1のコラムより主風向の風下側に位置した第2のコラムおよび第3のコラムと、前記第1のコラムおよび第2のコラム間、並びに、前記第1のコラムおよび第3のコラム間をそれぞれ接続する2つのロワーハルと、を含んで形成された浮体と、
前記浮体と水底に固定されたアンカーとをカテナリ状に接続する複数の係留索と、を備えた浮体式風力発電装置であって、
前記複数の係留索のうちの少なくとも2つは前記第1のコラムに接続され、前記複数の係留索のうちの少なくとも1つは前記第2のコラムに接続され、前記複数の係留索のうちの少なくとも1つは前記第3のコラムに接続されるとともに、
前記複数の係留索の夫々は、平面視において互いに交差しないように前記浮体から放射状に延在して配置されていることを特徴とする。
前記第2のコラムに接続された前記少なくとも一つの係留索は、前記2つのロワーハルの交点における二等分線と、該二等分線と直交し、且つ前記第2のコラムの中心を通過する直線とで画定された第1のコラム側の領域に向かって延在する回転防止係留索を含み、
前記第3のコラムに接続された前記少なくとも一つの係留索は、前記2つのロワーハルの交点における二等分線と、該二等分線と直交し、且つ前記第3のコラムの中心を通過する直線とで画定された第1のコラム側の領域に向かって延在する回転防止係留索を含んでいる。
前記第2のコラムに接続された前記回転防止係留索は、前記第1のコラムおよび第2のコラム間を接続する第1のロワーハルの軸方向に対して直交する方向に延在し、
前記第3のコラムに接続された前記回転防止係留索は、前記第1のコラムおよび第3のコラム間を接続する第2のロワーハルの軸方向に対して直交する方向に延在している。
前記第2のコラムおよび前記第3のコラムに、それぞれ複数の係留索が接続されている。
前記第1のコラム、前記第2のコラムおよび前記第3のコラムの夫々の側面には、接続される係留索を該コラムの側面に沿って鉛直方向に案内するガイド部が設けられている。
前記第1のコラム、前記第2のコラムおよび前記第3のコラムの夫々の側面には、前記ガイド部より上方に設けられ、前記ガイド部によって案内された係留索が下方に落下するのを防止するストッパを備え、
前記ストッパは、
前記コラムの側面から張り出すように設けられ、前記係留索が挿通可能な孔部が上方に向かって次第に開口が大きくなるように形成された張り出し部材と、
前記孔部に係留索が挿通された状態で前記孔部に上方から嵌め込み可能な楔部材と、を含んでいる。
前記ガイド部は、前記コラムの側面との間で前記係留索を挟むように配置されるフェアリードである。
前記係留索は、複数の環状材が繋げられた鎖形状をなし、
前記フェアリードは、
前記コラムの側面から張り出すように設けられた一対の支持部材と、
前記一対の支持部材の間に回転可能に支持され、該回転体の外周上に回転方向に沿って前記環状材の長さに対応するピッチで複数の凸部が形成されている回転体と、を含み、
前記凸部には前記環状材が介挿可能なスリットが設けられ、該スリットに前記環状材が介挿されることにより、前記係留索が前記コラムの側面に沿って鉛直方向に案内される。
前記第1のコラム、前記第2のコラムおよび前記第3のコラムの上面に、前記係留索を該上面に押し付けて固定する押付部が設けられている。
前記第1のコラム、前記第2のコラムおよび前記第3のコラムの内部には、該コラムの上面に開口を有する前記係留索を収納するための収納スペースが設けられている。
前記浮体の内部に、バラスト水の貯留量を調整可能に構成された貯水スペースが設けられている。
前記浮体内部に設けられた貯水スペースは、前記ロワーハルの長手方向において複数のサブルームに分割されており、該複数のサブルームは各々がバラスト水を注入および排出可能に構成されている。
前記コラムに接続される側の係留索の端部にはロープが接続されている。
風力発電機と、
前記風力発電機が設置された第1のコラムが2つのロワーハルを介して第2のコラムおよび第3のコラムに夫々接続されることで形成された浮体と、
前記浮体と水底に固定されたアンカーとを接続する複数の係留索と、を備えた浮体式風力発電装置の係留方法であって、
前記第1のコラムを主風向の風上側に、前記第2のコラムおよび前記第3のコラムを前記第1のコラムより主風向の風下側に位置するように前記浮体を配向し、
前記複数の係留索のうちの少なくとも2つを前記第1のコラムにカテナリ状に接続し、
前記複数の係留索のうちの少なくとも1つを前記第2のコラムにカテナリ状に接続し、
前記複数の係留索のうちの少なくとも1つを前記第3のコラムにカテナリ状に接続し、
前記複数の係留索を互いに交差しないように放射状に配置することを特徴とする。
前記第2のコラムに接続された前記少なくとも1つの係留索は、前記2つのロワーハルの交点における二等分線と、該二等分線と直交し、且つ前記第2のコラムの中心を通過する直線とで画定された第1のコラム側の領域に向かって延在するように接続される回転防止係留索を含み、
前記第3のコラムに接続された前記少なくとも1つの係留索は、前記2つのロワーハルの交点における二等分線と、該二等分線と直交し、且つ前記第3のコラムの中心を通過する直線とで画定された第1のコラム側の領域に向かって延在する回転防止係留索を含んでいる。
前記第2のコラムに接続された前記回転防止係留索は、前記第1のコラムおよび第2のコラム間を接続する第1のロワーハルの軸方向に対して直交する方向に延在するように接続され、
前記第3のコラムに接続された前記回転防止係留索は、前記第1のコラムおよび第3のコラム間を接続する第2のロワーハルの軸方向に対して直交する方向に延在するように接続される。
前記第2のコラムおよび前記第3のコラムに、それぞれ複数の係留索を接続する。
前記浮体に前記複数の係留索を接続する前に、
前記浮体とは別の船舶によって、前記複数の係留索に夫々接続された複数のアンカーを水底の所定位置に沈降させる沈降工程と、前記複数の係留索をそれぞれ牽引することにより、前記沈降させたアンカーを水底に固定する牽引工程と、
を備えている。
前記牽引工程において、前記複数の係留索を互いに連結し、該連結した複数の係留索をまとめて牽引することで、前記沈降させた複数のアンカーをまとめて水底に固定する。
前記牽引工程において、前記係留索を牽引する動力源の出力トルク、又は、前記牽引されている係留索の張力に基づいて、前記係留索の把駐力を測定する。
ただし、本発明の範囲は以下の実施形態に限定されるものではない。以下の実施形態に記載されている構成部品の寸法、材質、形状、その相対配置などは、本発明の範囲をそれにのみ限定する趣旨ではなく、単なる説明例に過ぎない。
図1および図2に示したように、本発明の一実施形態の浮体式風力発電装置1は、水面に浮かぶ浮体20と、浮体20に設置された風力発電機10とを備えている。
図3に示したように、本発明の一実施形態では、第1のコラム22aには2つの係留索34a、34bが接続される。該2つの係留索34a、34bは、それぞれ第1のロワーハル24aおよび第2のロワーハル24bの軸方向に沿った方向に延在している。また、第2のコラム22b、第3のコラム22cには、それぞれ3つの係留索34c、34d、34eおよび係留索34f、34g、34hが接続される。そして、浮体20全体では合計8本の係留索34a~34hが接続されている。これら8つの係留索34の各々は、平面視において互いに交差しないように浮体20から放射状に延在して配置される。
上述したコラム22およびロワーハル24は、その断面形状が中空状に形成されており、図4および図5に示したように、コラム22およびロワーハル24の内部には、バラスト水を貯留する貯水スペースが形成されている。
図11A~図11Cに示したように、本発明の一実施形態におけるガイド部80は、コラム22の側面との間で係留索34を挟むように配置されるフェアリード80aである。また、係留索34は、複数の環状材35が縦横順番に繋げられた鎖形状をなしている。
図12Aに示したように、ストッパ90は、コラム22の側面から張り出すように設けられた張り出し部材92と、楔形状をなした楔部材96a、96bとを含んでいる。
図13に示したように、コラム22の上面には、コラム22の上面との間で係留索34を挟んだ状態で、ボルト66aによってコラム22の上面に締結される押付部66が設けられている。そして、該押付部66によって、係留索34がコラム22の上面に対して所定の押付力Fで押し付けられる。このような押付部66が設けられていれば、コラム22の側面に沿って案内された係留索34をコラム22の上面に固定されるため、係留索34の端部が自由に遊んでしまうのを防ぐことができる。
10 風力発電機
10a ナセル
10b タワー
10c ブレード
15 曳航船
16 クレーン船
20 浮体
22 コラム
23 標識灯
24 ロワーハル
26 貯水ルーム
28 ポンプ室
32 アンカー
34 係留索
35 環状材
40a 船舶
40b 潜水艇
41 弾性部材
42 吊り上げ装置
44 エントランス
50 ポンプ
50a 吐出管
52 ゲート
53 空気弁
54 連絡通路
56 姿勢検知センサ
58 制御装置
60 電気室
62 突起部
64 防波壁
66 押付部
67 ロープ
68 収納スペース
70 格納ルーム
72 第1ルーム
74 第2ルーム
76 止水ゲート
80 ガイド部
80a フェアリード
82 支持部材
84 回転体
86 凸部
86a スリット
87 平坦部
90 ストッパ
92 張り出し部材
94 孔部
96 楔部材
Claims (20)
- 風力発電機と、
主風向の風上側に位置し、前記風力発電機が設置された第1のコラムと、該第1のコラムより主風向の風下側に位置した第2のコラムおよび第3のコラムと、前記第1のコラムおよび第2のコラム間、並びに、前記第1のコラムおよび第3のコラム間をそれぞれ接続する2つのロワーハルと、を含んで形成された浮体と、
前記浮体と水底に固定されたアンカーとをカテナリ状に接続する複数の係留索と、を備えた浮体式風力発電装置であって、
前記複数の係留索のうちの少なくとも2つは前記第1のコラムに接続され、前記複数の係留索のうちの少なくとも1つは前記第2のコラムに接続され、前記複数の係留索のうちの少なくとも1つは前記第3のコラムに接続されるとともに、
前記複数の係留索の夫々は、平面視において互いに交差しないように前記浮体から放射状に延在して配置されていることを特徴とする浮体式風力発電装置。 - 前記第2のコラムに接続された前記少なくとも1つの係留索は、前記2つのロワーハルの交点における二等分線と、該二等分線と直交し、且つ前記第2のコラムの中心を通過する直線とで画定された第1のコラム側の領域に向かって延在する回転防止係留索を含み、
前記第3のコラムに接続された前記少なくとも1つの係留索は、前記2つのロワーハルの交点における二等分線と、該二等分線と直交し、且つ前記第3のコラムの中心を通過する直線とで画定された第1のコラム側の領域に向かって延在する回転防止係留索を含むことを特徴とする請求項1に記載の浮体式風力発電装置。 - 前記第2のコラムに接続された前記回転防止係留索は、前記第1のコラムおよび第2のコラム間を接続する第1のロワーハルの軸方向に対して直交する方向に延在し、
前記第3のコラムに接続された前記回転防止係留索は、前記第1のコラムおよび第3のコラム間を接続する第2のロワーハルの軸方向に対して直交する方向に延在していることを特徴とする請求項2に記載の浮体式風力発電装置。 - 前記第2のコラムおよび前記第3のコラムには、それぞれ複数の係留索が接続されていることを特徴とする請求項2に記載の浮体式風力発電装置。
- 前記第1のコラム、前記第2のコラムおよび前記第3のコラムの夫々の側面には、接続される係留索を該コラムの側面に沿って鉛直方向に案内するガイド部が設けられていることを特徴とする請求項1に記載の浮体式風力発電装置。
- 前記第1のコラム、前記第2のコラムおよび前記第3のコラムの夫々の側面には、前記ガイド部より上方に設けられ、前記ガイド部によって案内された係留索が下方に落下するのを防止するストッパを備え、
前記ストッパは、
前記コラムの側面から張り出すように設けられ、前記係留索が挿通可能な孔部が上方に向かって次第に開口が大きくなるように形成された張り出し部材と、
前記孔部に係留索が挿通された状態で前記孔部に上方から嵌め込み可能な楔部材と、を含んでいることを特徴とする請求項5に記載の浮体式風力発電装置。 - 前記ガイド部は、前記コラムの側面との間で前記係留索を挟むように配置されるフェアリードであることを特徴とする請求項5に記載の浮体式風力発電装置。
- 前記係留索は、複数の環状材が繋げられた鎖形状をなし、
前記フェアリードは、
前記コラムの側面から張り出すように設けられた一対の支持部材と、
前記一対の支持部材の間に回転可能に支持され、該回転体の外周上に回転方向に沿って前記環状材の長さに対応するピッチで複数の凸部が形成されている回転体と、を含み、
前記回転体の凸部には前記環状材が介挿可能なスリットが設けられ、該スリットに 前記環状材が介挿されることにより、前記係留索が前記コラムの側面に沿って鉛直方向に案内されることを特徴とする請求項7に記載の浮体式風力発電装置。 - 前記第1のコラム、前記第2のコラムおよび前記第3のコラムの上面には、前記係留索を該上面に押し付けて固定する押付部が設けられていることを特徴とする請求項5に記載の浮体式風力発電装置。
- 前記第1のコラム、前記第2のコラムおよび前記第3のコラムの内部には、該コラムの上面に開口を有する前記係留索を収納するための収納スペースが設けられていることを特徴とする請求項9に記載の浮体式風力発電装置。
- 前記浮体の内部には、バラスト水の貯留量を調整可能に構成された貯水スペースが設けられていることを特徴とする請求項1に記載の浮体式風力発電装置。
- 前記浮体内部に設けられた貯水スペースは、前記ロワーハルの長手方向において複数のサブルームに分割されており、該複数のサブルームは各々がバラスト水を注入および排出可能に構成されていることを特徴とする請求項11に記載の浮体式風力発電装置。
- 前記コラムに接続される側の係留索の端部にはロープが接続されていることを特徴とする請求項5に記載の浮体式風力発電装置。
- 風力発電機と、
前記風力発電機が設置された第1のコラムが2つのロワーハルを介して第2のコラムおよび第3のコラムに夫々接続されることで形成された浮体と、
前記浮体と水底に固定されたアンカーとを接続する複数の係留索と、を備えた浮体式風力発電装置の係留方法であって、
前記第1のコラムを主風向の風上側に、前記第2のコラムおよび前記第3のコラムを前記第1のコラムより主風向の風下側に位置するように前記浮体を配向し、
前記複数の係留索のうちの少なくとも2つを前記第1のコラムにカテナリ状に接続し、
前記複数の係留索のうちの少なくとも1つを前記第2のコラムにカテナリ状に接続し、
前記複数の係留索のうちの少なくとも1つを前記第3のコラムにカテナリ状に接続し、
前記複数の係留索を互いに交差しないように放射状に配置することを特徴とする浮体式風力発電装置の係留方法。 - 前記第2のコラムに接続された前記少なくとも1つの係留索は、前記2つのロワーハルの交点における二等分線と、該二等分線と直交し、且つ前記第2のコラムの中心を通過する直線とで画定された第1のコラム側の領域に向かって延在するように接続される回転防止係留索を含み、
前記第3のコラムに接続された前記少なくとも1つの係留索は、前記2つのロワーハルの交点における二等分線と、該二等分線と直交し、且つ前記第3のコラムの中心を通過する直線とで画定された第1のコラム側の領域に向かって延在する回転防止係留索を含むことを特徴とする請求項14に記載の浮体式風力発電装置の係留方法。 - 前記第2のコラムに接続された前記回転防止係留索は、前記第1のコラムおよび第2のコラム間を接続する第1のロワーハルの軸方向に対して直交する方向に延在するように接続され、
前記第3のコラムに接続された前記回転防止係留索は、前記第1のコラムおよび第3のコラム間を接続する第2のロワーハルの軸方向に対して直交する方向に延在するように接続されることを特徴とする請求項15に記載の浮体式風力発電装置の係留方法。 - 前記第2のコラムおよび前記第3のコラムに、それぞれ複数の係留索を接続することを特徴とする請求項16に記載の浮体式風力発電装置の係留方法。
- 前記浮体に前記複数の係留索を接続する前に、
前記浮体とは別の船舶によって、前記複数の係留索に夫々接続された複数のアンカーを水底の所定位置に沈降させる沈降工程と、前記複数の係留索をそれぞれ牽引することにより、前記沈降させたアンカーを水底に固定する牽引工程と、
を備えたことを特徴とする請求項14に記載の浮体式風力発電装置の係留方法。 - 前記牽引工程において、前記複数の係留索を互いに連結し、該連結した複数の係留索をまとめて牽引することで、前記沈降させた複数のアンカーをまとめて水底に固定することを特徴とする請求項18に記載の浮体式風力発電装置の係留方法。
- 前記牽引工程において、前記係留索を牽引する動力源の出力トルク、又は、前記牽引されている係留索の張力に基づいて、前記係留索の把駐力を測定することを特徴とする請求項18に記載の浮体式風力発電装置の係留方法。
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- 2012-08-10 EP EP12855550.5A patent/EP2789848B1/en active Active
- 2012-08-10 KR KR1020147018375A patent/KR101592130B1/ko active IP Right Grant
- 2012-08-10 PT PT128555505T patent/PT2789848T/pt unknown
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- 2012-11-02 WO PCT/JP2012/078433 patent/WO2013084633A1/ja active Application Filing
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WO2014031009A1 (en) * | 2012-08-23 | 2014-02-27 | Dr. Techn. Olav Olsen As | Floating, semisubmersible hull for supporting preferably one or several wind turbines and method for commissioning, floating and installation of the semisubmersible hull |
CN106061834A (zh) * | 2014-02-06 | 2016-10-26 | 缅因大学系统委员会 | 系泊漂浮式风力涡轮机平台的方法 |
CN106061834B (zh) * | 2014-02-06 | 2019-05-07 | 缅因大学系统委员会 | 系泊漂浮式风力涡轮机平台的方法 |
US10518846B2 (en) | 2014-02-06 | 2019-12-31 | University Of Maine System Board Of Trustees | Method of mooring floating wind turbine platforms |
CN104977937A (zh) * | 2015-06-12 | 2015-10-14 | 广西大学 | 一种浮动码头的自动稳定控制系统 |
CN104977937B (zh) * | 2015-06-12 | 2018-05-11 | 海门黄海创业园服务有限公司 | 一种浮动码头的自动稳定控制系统 |
JP2018039475A (ja) * | 2016-09-09 | 2018-03-15 | 清水建設株式会社 | 係留索の継ぎ足し方法、浮体構造物の係留方法および浮体式洋上風力発電施設の施工方法 |
JP2018039474A (ja) * | 2016-09-09 | 2018-03-15 | 清水建設株式会社 | 浮体構造物の係留方法および浮体式洋上風力発電施設の施工方法 |
JP2019098982A (ja) * | 2017-12-04 | 2019-06-24 | 三菱造船株式会社 | 浮体、浮体係留装置および浮体係留方法 |
JP2019098963A (ja) * | 2017-12-04 | 2019-06-24 | 日鉄エンジニアリング株式会社 | 浮体、浮体係留装置および浮体係留方法 |
WO2019169742A1 (zh) * | 2018-03-06 | 2019-09-12 | 大连理工大学 | 一种用于深海养殖的浮式防波提和风能集成系统 |
US11412716B2 (en) | 2018-03-06 | 2022-08-16 | Dalian University Of Technology | Floating integrated system of breakwater and wind energy for deep-sea aquaculture |
JP2023523500A (ja) * | 2020-02-04 | 2023-06-06 | シングル・ブイ・ムーリングス・インコーポレイテッド | 風力海洋水生成設備及びそのような設備を製造する方法 |
JP7514929B2 (ja) | 2020-06-30 | 2024-07-11 | 三菱造船株式会社 | 洋上風車の浮体 |
JP2022016827A (ja) * | 2020-07-13 | 2022-01-25 | 日立造船株式会社 | 係留システムの設置方法および係留用浮体の設置方法 |
JP7365298B2 (ja) | 2020-07-13 | 2023-10-19 | 日立造船株式会社 | 係留システムの設置方法および係留用浮体の設置方法 |
Also Published As
Publication number | Publication date |
---|---|
KR20140105518A (ko) | 2014-09-01 |
PT2789850T (pt) | 2017-01-02 |
ES2599808T3 (es) | 2017-02-03 |
CN104066980A (zh) | 2014-09-24 |
CN104066979B (zh) | 2017-04-05 |
WO2013084633A1 (ja) | 2013-06-13 |
EP2789848B1 (en) | 2016-09-28 |
CN104066980B (zh) | 2017-02-22 |
CN104066979A (zh) | 2014-09-24 |
WO2013084878A1 (ja) | 2013-06-13 |
WO2013084546A1 (ja) | 2013-06-13 |
JP5762565B2 (ja) | 2015-08-12 |
PT2789848T (pt) | 2017-01-02 |
KR20140105519A (ko) | 2014-09-01 |
JPWO2013084818A1 (ja) | 2015-04-27 |
EP2789850B1 (en) | 2016-09-28 |
EP2789850A4 (en) | 2015-08-19 |
EP2789848A4 (en) | 2015-11-04 |
WO2013084818A1 (ja) | 2013-06-13 |
ES2599837T3 (es) | 2017-02-03 |
EP2789850A1 (en) | 2014-10-15 |
KR101577157B1 (ko) | 2015-12-11 |
KR101592130B1 (ko) | 2016-02-05 |
EP2789848A1 (en) | 2014-10-15 |
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