CN203767042U - Outward floating type tension leg floating wind turbine foundation and offshore wind turbine - Google Patents
Outward floating type tension leg floating wind turbine foundation and offshore wind turbine Download PDFInfo
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- CN203767042U CN203767042U CN201420096586.1U CN201420096586U CN203767042U CN 203767042 U CN203767042 U CN 203767042U CN 201420096586 U CN201420096586 U CN 201420096586U CN 203767042 U CN203767042 U CN 203767042U
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Classifications
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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
- B63B1/107—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
- B63B21/50—Anchoring arrangements or methods for special vessels, e.g. for floating drilling platforms or dredgers
- B63B21/502—Anchoring arrangements or methods for special vessels, e.g. for floating drilling platforms or dredgers by means of tension legs
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
- B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
- B63B2035/4433—Floating structures carrying electric power plants
- B63B2035/446—Floating structures carrying electric power plants for converting wind energy into electric energy
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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
- B63B39/06—Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude to decrease vessel movements by using foils acting on ambient water
- B63B2039/067—Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude to decrease vessel movements by using foils acting on ambient water effecting motion dampening by means of fixed or movable resistance bodies, e.g. by bilge keels
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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
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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
- Y02E10/727—Offshore wind turbines
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Wind Motors (AREA)
Abstract
The utility model discloses an outward floating type tension leg floating wind turbine foundation and an offshore wind turbine. The floating wind turbine foundation comprises a top supporting platform, a bottom supporting structure, at least three hollow stand columns and a ballast adjusting system, wherein the top supporting platform is used for supporting a tower, blades and a wind turbine set; the bottom supporting structure is connected with a plurality of tension legs; the at least three hollow stand columns are connected between the top supporting platform and the bottom supporting structure and arranged around the vertical center line of the floating wind turbine foundation, and each stand column inclines outwards from the lower end to the upper end relative to the vertical center line of the floating wind turbine foundation; the ballast adjusting system is arranged in the stand columns and/or the bottom supporting structure. The offshore wind turbine provided with the foundation adopting the structure is excellent in motion performance, convenient to manufacture, assemble and install and capable of being towed entirely.
Description
Technical field
The utility model relates to offshore wind generating field, more particularly, relates to the unsteady blower foundation of a kind of flare formula tension leg and the offshore wind generating with this unsteady blower foundation.
Background technology
In more than 50 meters region, deep-sea, the more more high-qualitys of the wind-resources that can develop, market outlook are also more wide.Develop the deep-sea wind energy turbine set in these marine sites, what according to current Offshore Winds, generally adopt variously runs through the way that pilework is fixed on seabed and will not possess advantage, because: along with the depth of water increases, fixed type basic cost straight line rises; Fixed offshore blower fan construction O&M cost is higher than floating type offshore wind turbine.Therefore,, for the construction of marine wind electric field can be developed to abyssal area, need the floating type aerogenerator of exploiting economy practicality.How developing motion characteristics excellence, compact conformation, economical and practical floating type blower foundation has become the problem of the floating type blower fan most critical of exploitation.
Be applied to the floating type blower foundation in offshore wind farm field, the load of bearing is different from the mobile unit in traditional sea oil engineering, floating type offshore wind turbine foundation is except bearing the synergy of stormy waves stream, also to bear this tall and slender structure of blower fan and move caused gyro turning leverage, capsizing moment Mx, My and around the moment of torsion Mz of vertical axis, whole blower fan can produce the strenuous exercise of six-freedom degree, comprise X, Y and Z axis move axially and around the swing of axle, change oar and the yaw control system of fan bring huge challenge, can have influence on the normal operation of blower fan, affect electric energy generated, the even safety of entail dangers to whole system structure.
At present, according to the needs of exploitation deep-sea wind energy turbine set, people have started the conventional deep-sea floating type oil platform pattern of marine oil industry to be applied in wind-powered electricity generation field, have in succession developed and have adopted single column platform (SPAR), semisubmersible platform (Semi-submersible), the floating type blower fan of tension leg platform (TLP) and the floating type blower fan of other complex forms.Up to the present, in global range, existing general three floating type blower fan projects are built up, and are respectively Hywind, Blue H and Windfloat.Hai You Hai Deluo company (Statoil Hydro) of Hywind Shi You Norway country, French Nip De Ke company (Technip) and Siemens develop jointly successfully, and near the North Sea 2009 Nian Norway is built up.The basic concept that Hywind adopts is SPAR, and floating structure is an elongated steel tube that is about 117m length, and one end is base, and the other end is blower fan flange.The steel pipe filling up with ballast chamber is transported to place of erection and stands on sea, and the total of buoyancy aid is that anchor cable is connected with seabed by three.2007, two blade wind turbine prototypes were installed Italy is coastal by Dutch Blue H company, have used tension leg platform design, and by making the buoyancy of platform be greater than gravity, tension leg is all the time in tensioning state, to keep the stable of platform.The end of the year 2011, Principle Power, Vestas cooperate with EDP, in Portugal West Coast, cooperated Windfloat project, this floating foundation is semisubmersible concept, main body is comprised of three floating drums, blower fan stands on one of them floating drum, and dynamic ballast water can automotive resistance wind heeling moment, and bottom is by the solid seabed that surpasses 50m in the depth of water of four stretched wire linear systems.
The weak points such as yet the manufacture of above-mentioned floating type blower fan project ubiquity, transportation, cost of installation are high, exercise performance is excellent not, and complex structure and service life are long.
Utility model content
The purpose of this utility model is the unsteady blower foundation of the flare formula tension leg that a kind of integral installation is provided and is suitable for complete machine towage and offshore wind generating.
Another object of the present utility model is to provide a kind of unsteady blower foundation of flare formula tension leg and offshore wind generating of exercise performance excellence.
The unsteady blower foundation of the flare formula tension leg that provides a kind of manufacture, cost of installation to reduce and offshore wind generating are provided another object of the present utility model.
To achieve these goals, provide a kind of flare formula tension leg blower foundation that floats, this unsteady blower foundation comprises: top braces platform, for support tower, blade and wind power generating set; Lower support structure, is connected with a plurality of tension legs; The column of at least three hollows, is connected between top braces platform and lower support structure and around the vertical line of centers of the blower foundation that floats and arranges, every root post is outward-dipping towards upper end from lower end with respect to the vertical line of centers of the blower foundation that floats; Ballast control system, is arranged in described column and/or lower support structure.
Described lower support structure can be formed by the polygon buoyancy tank with a plurality of evagination parts.Described polygon buoyancy tank has a plurality of evagination parts, and the lower end of column is separately positioned in evagination part.
The middle body of described polygon buoyancy tank can form hole.
The angle of each column and vertical direction can be in the scope of 5 degree to 15 degree.
Lower support structure can be formed by truss structure.
Described polygon buoyancy tank can be the Y shape buoyancy tank with Y shape aspect.
In the bottom of column, can be provided with described ballast control system.
Can form raised type mooring pipe in the end of the evagination part of polygon buoyancy tank, tension leg can be connected with polygon buoyancy tank by raised type mooring pipe.
Raised type mooring pipe can be connected with tension leg by universal-joint.
Raised type mooring pipe can lay respectively at the outside of column, and in the outside of each column, at least two tension legs are connected with raised type mooring pipe
The horizontal length of raised type mooring pipe evagination can be roughly 0.5 times to 1.5 times of maximum outside diameter of column.
Described truss structure can have polygon plane shape, and the evagination edge of truss structure can be provided with mooring pipe, and mooring pipe can be connected with tension leg by universal-joint.
Described column can with respect to the Central Symmetry of the blower foundation that floats arrange.
At least one column can have round rectangle cross-sectional plane.
At least one column can have circle or oval cross section.
The ballast medium of described ballast control system can be the combination of seawater or seawater and sandstone.
Described top braces platform can be formed by polygon case structure, and the inside of described top braces platform can be formed for installing the inner space of accessory equipment.
Described top braces platform can be formed by Y shape case structure.
Described top braces platform can be formed by truss structure.
Described hole can have polygon cross-sectional plane.
Described unsteady blower foundation also can comprise the pylon base for supporting being arranged on top braces platform.
Pylon base for supporting can comprise: support tube, is arranged on top braces platform; A plurality of strut bars, around support tube setting, one end of each strut bar is connected to the top of support tube, and the other end is connected with top braces platform, with supported cylinder obliquely.
The inside of support tube can form accessory equipment installing space.
The bottom of pylon is arranged on the top of support tube by flange.
The central authorities of top braces platform can be provided with pylon base for supporting, with the bottom of support tower.
Tension leg can be in wirerope, poly-ester fibres cable, steel pipe, polyurethane hawser, anchor chain at least one form.
According on the other hand of the present utility model, a kind of offshore wind generating is also provided, comprise the unsteady blower foundation of flare formula tension leg as previously described and be arranged on pylon, blade and the wind power generating set on this unsteady blower foundation.
The bottom of pylon can be connected by flange and the unsteady blower foundation of flare formula tension leg.
The outer edge of described lower support structure can form raised type mooring pipe, to be connected with tension leg.Described raised type mooring pipe can be connected with tension leg by universal-joint.
In the utility model, because unsteady blower foundation has adopted external inclined type column, during towage, static stability and rough water quality are all good, have overcome can not the complete machine wet shortcoming of dragging installation of conventional tension leg platform, avoided using expensive large-scale marine installation ship, reduced installation cost.Due to column flare, column size can suitably reduce, and still can guarantee the buoyancy identical with conventional vertical pillars, thereby reduce steel using amount, has lowered thus the infrastructure cost of unsteady blower foundation.Moreover, owing to having adopted external inclined type column, effectively increased added mass and the additional damping of the horizontal stroke/surging of whole unsteady blower fan system, overcome the excessive defect of conventional tension leg platform horizontal motion, guaranteed that blower fan is not subject to wake effect to increase electric energy generated; Simultaneously also actv. has increased head and has shaken added mass and damping, has reduced head and has shaken motion amplitude, guarantees that blower fan is to wind, thereby improves electric energy generated.
In the utility model, owing to having adopted raised type mooring pipe, the layout size of column and bottom buoyancy tank can reduce, thereby can save steel material, reduces the number of tension leg, thereby further reduces costs.And raised type mooring pipe has increased the arm of force, increased horizontal stroke/pitching restoring moment, whole foundation motion performance is better, compares with existing similar technique, and swing angle has reduced at least 25%.
In the utility model, column and the end buoyancy tank of unsteady blower foundation are square-section, technique is simple, easy to process, be easy to realize, can on dock or building berth, build, not need complicated aloft work, and can by land loop wheel machine, complete the assembled of whole floating type blower fan at bank harbour, then whole towage (wet dragging), to place of erection, is located by mooring.
Excellent according to the exercise performance of the unsteady blower foundation of flare formula tension leg of the present utility model, lower than traditional floating type blower foundation cost, be suitable for marine site more than depth of water 30m, especially in the Intermediate Water Depth marine site of 30～60m, performance and cost can be at war with traditional jacket basis, can carry blower fan more than 5MW rank, can guarantee structural strength and the fatigue life of whole blower fan, and ensure that blower fan normally moves generating, and there is unique advantage, for example, mobility is good, transportation and easy to maintenance, recovery utilizability is good, assembling and disassembling is little to environmental concerns.In addition, due to flare formula tension leg of the present utility model float blower foundation profile feature and rely on tension leg compared with hightension, make whole horizontal stroke/pitching and heaving cycle below 3s, avoided 3～20s periodic regime that Wave energy is concentrated, avoided the fundamental frequency of pylon, also avoid 1P, the 3P frequency limit of blower fan simultaneously, actv. has reduced the resonance response of whole floating type blower fan system, reduce complete machine ultimate load and fatigue load level, guaranteed blower fan safe and reliable operation.
In the utility model, owing to having adopted the combination technique of external inclined type column and raised type mooring pipe, reduce significantly horizontal stroke/pitching motion amplitude of whole unsteady blower fan system, reduced to come angle distinguished and admirable and impeller, increased the electric energy generated of blower fan below wind rating.
At the utility model, owing to having adopted the unitized design of external inclined type column and raised type mooring pipe, external inclined type column can provide larger transverse and longitudinal to shake auxiliary restoring force in similar semisubmersible basis, can reduce the risk that tension leg is lax, reduce tension force in tension leg, reduced the risk of mooring pipe fatigue damage, the lax disaster that can bring of tension leg that has overcome conventional tension leg platform and mooring pipe are due to the impaired drawback of heavily stressed fatiguability.
In the utility model, the use of traditional jacket node has been avoided on the floating type basis of flare formula tension leg as far as possible, has reduced fatigue damage, has guaranteed the fatigue life of total.
In the utility model, the tension leg being connected with the floating type basis of flare formula tension leg, owing to adopting polyurethane hawser or wirerope, has reduced mooring cost and difficulty of construction.
In the utility model, the unsteady blower foundation of flare formula tension leg is also equipped with the water system that carries of pressure-adjustable,, ballast control system, can meet like this that various banks are assembled, the stability requirement under the various operating modes such as towage and mode of operation in place, make offshore construction operation easily under various operating modes become possibility.
According to the unsteady blower foundation of flare formula tension leg of the present utility model, have the advantages that version is simple, easy to process, cost is lower, be easy to realization, the unsteady blower foundation of flare formula tension leg proposing in the utility model is standby as the important extra large frock of exploitation deep-sea wind energy turbine set, can support the safe operation of the above large capacity wind-powered electricity generation unit of 5MW.
By utilizing according to the unsteady blower foundation of flare formula tension leg of the present utility model, the installation of corresponding offshore wind generating has the advantage of obvious easy operating: when bank port and pier complete machine is assembled, by adjusting the ballast water in three columns and end buoyancy tank, make basic drinking water meet the assembled requirement of whole floating structure, at this moment absorb water more shallow (being no more than 8 meters); Adjust ballast water after assembled to certain drinking water, complete machine is wet, and to be dragged to place of erection in place, can open the valve that is communicated with buoyancy tank inside, the end, pours into ballast water, then connects tension leg, then by adjust loading system discharge ballast water until designed draft by tension leg tensioning.Can find out, whole simple to operation, cost is lower.
Accompanying drawing explanation
By the description of carrying out below in conjunction with accompanying drawing, above and other object of the present utility model and feature will become apparent, wherein:
Fig. 1 shows the block diagram having according to the offshore wind generating of the unsteady blower foundation of the flare formula tension leg of the first embodiment of the present utility model;
Fig. 2 shows according to the block diagram of the unsteady blower foundation of the flare formula tension leg of the first embodiment of the present utility model;
Fig. 3 shows according to the block diagram of the pylon base for supporting of the unsteady blower foundation of the flare formula tension leg of the first embodiment of the present utility model;
Fig. 4 shows according to the unsteady column of blower foundation of the flare formula tension leg of the first embodiment of the present utility model and the block diagram of bottom buoyancy tank;
Fig. 5 shows the block diagram having according to the offshore wind generating of the unsteady blower foundation of the flare formula tension leg of the second embodiment of the present utility model;
Fig. 6 shows the block diagram having according to the offshore wind generating of the unsteady blower foundation of the flare formula tension leg of the second embodiment of the present utility model, and wherein, wind power generating set and blade are omitted.
The specific embodiment
Below, with reference to accompanying drawing, describe embodiment of the present utility model in detail.
Fig. 1 shows the block diagram having according to the offshore wind generating 100 of the unsteady blower foundation 4 of the flare formula tension leg of the first embodiment of the present utility model; Fig. 2 shows according to the block diagram of the unsteady blower foundation 4 of the flare formula tension leg of the first embodiment of the present utility model; Fig. 3 shows according to the block diagram of the pylon base for supporting 10,11 of the unsteady blower foundation 4 of the flare formula tension leg of the first embodiment of the present utility model; Fig. 4 shows according to the unsteady column 6 of blower foundation 4 of the flare formula tension leg of the first embodiment of the present utility model and the block diagram of bottom buoyancy tank 7.
As shown in Figure 1, offshore wind generating 100 mainly comprises flare formula tension leg float blower foundation 4, pylon 3, blade 1 and wind power generating set 2, and wherein, the blower foundation 4 that floats is anchored to seabed (not shown) by tension leg 5.Blade 1 and wind power generating set 1 are installed in the top of pylon 3, and the bottom of pylon 3 is connected with unsteady blower foundation 4, thereby support wind power generating set 2 and blade 1 normal operation by the blower foundation 4 that floats, to generate electricity.
Below with reference to Fig. 2 to Fig. 4, introduce according to the constructional feature of the unsteady blower foundation 4 of the flare formula tension leg of the first embodiment of the present utility model in detail.
As shown in Figures 2 to 4, according to the flare formula tension leg of the first embodiment of the present utility model blower foundation 4 that floats, mainly comprise top braces platform 9, three columns 6 and lower support structure 7, wherein, three columns 6 are connected between top braces platform 9 and lower support structure 7.Lower support structure 7 is connected with a plurality of tension legs 5.
Lower support structure 7 can form buoyancy tank, and therefore, in this embodiment, lower support structure 7 also can be called as bottom buoyancy tank.As shown in Figure 4, bottom buoyancy tank 7 has Y shape plane, thus, this buoyancy tank is called to Y shape buoyancy tank.Yet the utility model is not limited to this, that is, the quantity of the shape of bottom buoyancy tank 7 and column 6 can change.For example, 4,5 or more column can be set, correspondingly, bottom buoyancy tank 7 can form the polygon casing on triangle casing, quadrangle casing, pentagon casing or more limits.In addition, bottom buoyancy tank 7 is also not limited to polygonal shape, can also have the aspects such as circle, ellipse.Yet, at the middle body of bottom buoyancy tank 7, being preferably formed as hole, hole preferably has polygon cross-sectional plane, so not only can alleviate the weight of bottom buoyancy tank 7, also can save material, and is convenient to processing.The shape of hole is not limited to polygon, also can adopt other shapes such as circle, ellipse.Polygonal bottom buoyancy tank 7 is mainly positioned at the depths below the water surface, has greatly reduced wave force.Because bottom buoyancy tank has polygonal cross-section, effectively increased whole unsteady blower foundation vertically swing, additional damping and the added mass of rolling, pitching and yawing, thereby reach the object of the motion amplitude that reduces whole offshore wind generating.When assembled on bank, this bottom buoyancy tank 7 can provide buoyancy to support whole unsteady blower fan, makes basic drinking water more shallow, meets the light-draft requirement in harbour; Under the designed draft of assembling position, in this bottom buoyancy tank, can be full of ballast water, reduced whole basic center of gravity, improved stability and rough water quality.
Bottom buoyancy tank 7 can be formed with a plurality of evagination parts, and like this, the bottom of column 6 can be arranged in the corresponding evagination part of bottom buoyancy tank 7.In the present embodiment, Y shape bottom buoyancy tank 7 also can be considered to form by three evaginations parts of the outside formation at hexagon buoyancy tank.Preferably, for Y shape bottom buoyancy tank 7, evagination part can form with hexagon buoyancy tank.The end of evagination part can form raised type mooring pipe 8, to be connected with tension leg 5.The quantity of evagination part can change, and for example, the quantity of evagination part can be identical with the quantity of column 6.Preferably, raised type mooring pipe 8 is formed at the outside of column 6, and is connected with tension leg 5 by universal-joint (not shown).Tension leg 5 can be formed by wirerope or poly-ester fibres cable.Yet the utility model is not limited to this, tension leg 5 also can be used steel pipe, polyurethane, anchor chain or its to be combined to form.Preferably, in the outside of each column 6, can use two tension legs 5 to be connected with raised type mooring pipe 8.Use more tension legs 5 to be also fine.
Raised type mooring pipe 8 adopts universal-joint to be connected with tension leg 5, therefore tension leg 5 can be around any axial-rotation, there is no Moment, its Main Function is to have increased the arm of force, increased horizontal stroke/pitching restoring moment, made whole unsteady blower foundation exercise performance better, and column and buoyancy tank arrange that size can suitably reduce to save steel material, and reduce the number of tension leg, thereby further reduce costs.
The top braces platform 9 at flare column 6 tops is except the structural strength of the unsteady blower foundation of support post 10 assurance, guardrail can also be set thereon, arrange the equipment such as windlass, be convenient to safeguard that ship is after square column 6 one sides are stopped simultaneously, on-the-spot O&M personnel etc. safeguard blower fan by after this platform, thus serve as the main working platform of offshore wind generating 100.Top braces platform 9 bottoms are supported and are attached thereto by column 6, and its top braces pylon 3, wind power generating set 2 and blade 1.In this embodiment, top braces platform 9 is triangle platform, with the form fit of the bottom buoyancy tank 7 with Y shape.Three columns 6 can with respect to the Central Symmetry of the blower foundation 4 that floats arrange.Yet the utility model is not limited to this, the shape of top braces platform 9 can change according to the shape of the quantity of column 6 and/or lower support structure 7, and for example, top braces platform 9 can form the various shapes such as rectangle, circle.Top braces platform 9 can be formed by the steel plate of truss structure, case structure or suitable thickness, if its can support tower 3, wind power generating set 2 and blade 1.
In the present embodiment, column 6 is connected between top braces platform 9 and lower support structure 7 and around the vertical line of centers of the blower foundation 4 that floats and arranges, every root post 6 is outward-dipping towards upper end from lower end with respect to the vertical line of centers of the blower foundation 4 that floats.Column 6 is hollow, therefore similar with bottom buoyancy tank 7, in column 6, ballast control system can be set.Preferably, ballast control system is arranged on the bottom of column 6, to reduce the center of gravity of ballast control system, and the stability of blower foundation 4 and whole offshore wind generating 100 thereby raising is floated.In this case, in bottom buoyancy tank 7, also ballast control system can be set, and only in the bottom of column 6, ballast control system be set.
The ballast medium of ballast control system can adopt fresh water, seawater, or the combination of seawater and sandstone.Utilize the combination of seawater or seawater and sandstone to gather materials on the spot, not only perfusion is convenient, and with low cost.
As shown in Figures 2 to 4, the square column 6(of band rounding that this unsteady blower foundation 4 mainly comprises three flares, each column 6 has round rectangle cross-sectional plane), its bottom also can be called as Y shape buoyancy tank with the hexagonal base buoyancy tank 7(with three evagination parts) be connected, its top is connected with leg-of-mutton top braces platform 9.Preferably, column 6 is with respect to outward-dipping 5 ° to 15 ° of the vertical line of centers of the blower foundation 4 that floats.Yet the utility model is not limited to this, column 6 also can change with respect to the angle of inclination of the vertical line of centers of the blower foundation 4 that floats.The Main Function of the square column 6 of external inclined type is to increase stability and the rough water quality of floating type basis under free floating condition, and horizontal stroke/pitching angle is larger, and waterplane area is larger, the area centre of form is larger to the distance of S. A., moment of area is larger, and the restoring force therefore providing is larger.
Column 6 is manufactured and is conducive to simplified manufacturing technique according to the cross section with general square shape or rectangle, and the dihedral of column 6 becomes circular arc can relax the impact of seawater column 6, thereby improves the service life of column 6.Therefore, column 6 also can have circle or oval cross section.The horizontal length of raised type mooring pipe 8 evaginations of end that is arranged on the evagination part of bottom buoyancy tank 7 can be roughly 0.5 times to 1.5 times of maximum outside diameter of column 6.Preferably, the horizontal length of raised type mooring pipe 8 evaginations can be the maximal side of square-section of column 6 or 1 times to 1.5 times of the diameter of round section.Yet the utility model is not limited to this, the horizontal length of raised type mooring pipe 8 evaginations can change as required.
Connection structure below in conjunction with accompanying drawing 2 and the 3 pairs of pylons 3 and top braces platform 9 is introduced.On the whole, the bottom of pylon 3 is connected by flange and the unsteady blower foundation 4 of flare formula tension leg, and more particularly, pylon 3 can be arranged on top braces platform 9 by flange.Preferably, as Figure 1-3, can pylon base for supporting be set on top braces platform 9 and carry out support tower 3.
Pylon base for supporting comprises: support tube 10, be arranged on the center of top braces platform 9, a plurality of strut bars 11 arrange around support tube 10, and one end of each strut bar 11 is connected to the top of support tube 10, the other end is connected with top braces platform 9, with supported cylinder 11 obliquely.Because the diameter of support tube 10 is larger, for example, diameter can reach 6.5m or larger, so the inside of support tube 10 forms accessory equipment installing space, the various accessory equipments such as regulator cubicle can be installed in this space, thereby have effectively utilized the inner space of support tube 10.In the present embodiment, the quantity of strut bar 11 is 3, but the utility model is not limited to this, and strut bar 11 can have four or more.
Support tube 10 is connected with pylon 3 with tower bottom flange by top flange, to support the wind power generating set 2 on top and pylon 3 etc.Yet the utility model is not limited to this, pylon 3 also can be directly installed on top braces platform 9.
The whole unsteady blower foundation of structure can the about 10m to 12m of designed draft as mentioned above, in each column 6 bottom and/or the inner ballast water control system arranging of bottom buoyancy tank 7 can regulate the drinking water of towage and operating mode in place, therefore whole unsteady blower foundation 4 has obvious infrastructure cost, and installation and transportation send and maintenance cost advantage, and exercise performance is excellent, under a-hundred-year extreme sea condition, motion amplitude is no more than 2 °.
In above-described embodiment, all parts all connect together by welding, and intermediate cylindrical column 10 is connected with top braces platform 9, need to coordinate the operating condition of blower fan 100 and the structural strength analysis under extreme sea condition reasonably to strengthen.The square column 6 of external inclined type and bottom buoyancy tank 7 inside need to carry out rationally strengthening to bear hydrostatic pressure and wave pressure load, its scantling of structure can meet buoyancy, stability and requirement of strength, and avoid Wave energy and concentrate under the prerequisite of frequency range, pylon fundamental frequency, blower fan 1P and 3P frequency limit and tension leg 5 vortex-induced vibrations, can optimize base water tractive performance by hydrodynamic force software or model test, obtain optimal size.
According to the unsteady blower foundation of the flare formula tension leg of the first embodiment of the present utility model, it is all-steel structure, wind power generating set 2 for different capabilities, when building, can select to carry out assembled near the port and pier on bank, whole wetting is dragged to place of erection again, then by mooring, locate, according to offshore wind generating 100 devices of embodiment of the present utility model, there is no daily attention requirement.
The offshore wind generating 200 that floats blower foundation 12 and have this unsteady blower foundation 12 according to the flare formula tension leg of the second embodiment of the present utility model is described below in conjunction with accompanying drawing 5-6.
Fig. 5 shows the block diagram having according to the offshore wind generating 200 of the unsteady blower foundation 12 of the flare formula tension leg of the second embodiment of the present utility model; Fig. 6 shows the block diagram having according to the offshore wind generating 200 of the unsteady blower foundation 12 of the flare formula tension leg of the second embodiment of the present utility model, and wherein, wind power generating set 2 and blade 1 are omitted.
Because the offshore wind generating 200 having is with similar according to the offshore wind generating 100 of the flare formula tension leg floating foundation 4 of the first embodiment of the present utility model, therefore for identical parts, will use identical label, and by the detailed description of omitting them.
As shown in Fig. 5-6, according to the flare formula tension leg floating foundation 12 of second embodiment of the present utility model, comprise top braces platform 14, three columns 15 and lower support structure 16.
Different from first embodiment, the main structure in the structure of top braces platform 14, the shape of column 15 and lower support structure 16 of difference.
In a second embodiment, top braces platform 14 tops are formed by Y shape case structure, and lower support structure 16 forms with truss structure, mooring pipe is set at the edge of each evagination of truss and is connected with two tension legs 5.Preferably, column 15 has circular cross section.Yet the utility model is not limited to this, the shape of the quantity of column 15 and shape, top braces platform 14, the shape of lower support structure 16 etc. can be carried out various changes.Similar with first embodiment, tension leg 5 can be connected with the mooring pipe in lower support structure 16 by universal-joint.These flare formula tension leg floating foundation scheme 12 bottoms adopt truss structure to be connected, and have saved steel using amount, have improved basic economy; Top braces platform 14 adopts box-structures, has reduced the impact of blower fan running fatigue load, and its inner space can be used for arranging motor cabinet and adjust the equipment of carrying, and has improved space availability ratio.
Although not shown, the central authorities of top braces platform 9 can be provided with pylon base for supporting, with the bottom of support tower 3, wherein, pylon base for supporting can adopt the structure of the pylon base for supporting in first embodiment, also can adopt other structure.In addition, in this embodiment, can omit pylon base for supporting.Like this, the base of pylon 3 can directly be installed on top braces platform 14.
Although mainly described two kinds of embodiments above, but the utility model is not limited to this, those skilled in the art can carry out combination by the parts of two embodiment under instruction of the present utility model, to obtain more embodiment, it is consistent with utility model design of the present utility model that such embodiment also should be considered to.
By describing according to the offshore wind generating construction method of installation of embodiment of the present utility model, mainly comprise the steps: below
(1) at port and pier, the unsteady blower foundation of described flare formula tension leg, pylon, blade and wind power generating set are assembled to form whole floating type offshore wind generating;
(2) utilize towboat that whole floating type offshore wind generating is wet and is dragged to marine place of erection;
(3) tension leg is anchored to seabed.
In the process of assembling and fixing whole floating type offshore wind generating, can utilize ballast control system to keep whole floating type offshore wind generating in stable condition.
In addition, can tension leg be connected to the unsteady blower foundation of flare formula tension leg in assembling process.Also can towboat is wet by whole floating type offshore wind generating connects tension leg after being dragged to marine place of erection utilizing.
By above description, can be clear that:
The first, the tension leg of the present utility model blower foundation that floats adopts external inclined type column, and the stability problem in the time of can overcoming the free towage of general tension leg platform realizes that whole floating type blower fan is wet drags installation, has avoided using large-scale marine transport ship and the installation ship of costliness.
The second, the unsteady blower foundation of tension leg of the present utility model adopts raised type mooring pipe, and larger restoring moment can be provided, and has reduced foundation motion amplitude, meets blower fan and normally moves generating, can improve electric energy generated.In addition, with conventional tension leg platform ratio, according to flare formula tension leg of the present utility model float blower foundation by external inclined type column and raised type mooring pipe in conjunction with having reduced integral structure weight approximately 30%.
Three, in the utility model, tension leg workability valency, than high wirerope and poly-ester fibres cable, not only reduces the cost of product of offshore wind generating, and has reduced mooring cost and difficulty of construction.
Four, the unsteady blower foundation of flare formula tension leg of the present utility model, in Intermediate Water Depth marine site, the overall target of exercise performance, economy and installation O&M is better than jacket basis, and such as for 6MW blower fan, this comparable jacket of steel using amount basis, tension leg basis reduces approximately 15%.
Five, the convenient processing and manufacture of the unsteady blower foundation of flare formula tension leg of the present utility model and offshore wind generating, can or build on building berth in general dock, at bank harbour, carry out complete machine assembled, less demanding to harbour depth, can wholely wet and drag, save the large-scale floating crane ship that conventional offshore lifting needs, to offshore wind turbine, installed and offer convenience, greatly saved transportation cost of installation.
Six, for the floating type blower fan that has adopted the unsteady blower foundation of flare formula tension leg, when the large part replacement of needs or meet typhoon while attacking, can untie the mooring rope, only need a common towboat can whole towage to go back to port and carry out part replacement or wind sheltering, maneuverability performance is good, saved the high expense of large-scale floating crane ship and carrier, the harm of having avoided typhoon to cause unit.
The utility model is not limited to above-described embodiment, in the situation that not departing from the utility model scope, can carry out various changes and modifications.
Claims (18)
1. the unsteady blower foundation of flare formula tension leg, is characterized in that, this unsteady blower foundation comprises:
Top braces platform, for support tower, blade and wind power generating set;
Lower support structure, is connected with a plurality of tension legs;
The column of at least three hollows, is connected between top braces platform and lower support structure and around the vertical line of centers of the blower foundation that floats and arranges, every root post is outward-dipping towards upper end from lower end with respect to the vertical line of centers of the blower foundation that floats;
Ballast control system, is arranged in described column and/or lower support structure.
2. the unsteady blower foundation of flare formula tension leg as claimed in claim 1, is characterized in that, described lower support structure is formed by polygon buoyancy tank, and described polygon buoyancy tank has a plurality of evagination parts, and the bottom of column is separately positioned in evagination part.
3. the unsteady blower foundation of flare formula tension leg as claimed in claim 2, is characterized in that, the middle body of described polygon buoyancy tank forms hole.
4. the unsteady blower foundation of flare formula tension leg as claimed in claim 1, is characterized in that, the angle of each column and vertical direction is in the scope of 5 degree to 15 degree.
5. the unsteady blower foundation of flare formula tension leg as claimed in claim 1, is characterized in that, lower support structure is formed by truss structure.
6. the unsteady blower foundation of flare formula tension leg as claimed in claim 1, is characterized in that, is provided with described ballast control system in the bottom of column.
7. the flare formula tension leg as claimed in claim 2 blower foundation that floats, it is characterized in that, end in the evagination part of polygon buoyancy tank forms raised type mooring pipe, and tension leg is connected with polygon buoyancy tank by raised type mooring pipe, and raised type mooring pipe is connected with tension leg by universal-joint.
8. the flare formula tension leg as claimed in claim 7 blower foundation that floats, it is characterized in that, raised type mooring pipe lays respectively at the outside of column, outside at each column, at least two tension legs are connected with raised type mooring pipe, 0.5 times to 1.5 times of the maximum outside diameter that the horizontal length of raised type mooring pipe evagination is column.
9. the unsteady blower foundation of flare formula tension leg as claimed in claim 5, is characterized in that, described truss structure has polygon plane shape, and the evagination edge of truss structure is provided with mooring pipe, and mooring pipe is connected with tension leg by universal-joint.
10. the unsteady blower foundation of flare formula tension leg as claimed in claim 1, is characterized in that, described top braces platform is formed by polygon case structure, and the inside of described top braces platform is formed for installing the inner space of accessory equipment.
The 11. flare formula tension legs as claimed in claim 1 blower foundation that floats, is characterized in that, described top braces platform is formed by truss structure.
The 12. flare formula tension legs as claimed in claim 3 blower foundation that floats, is characterized in that, described hole has polygon cross-sectional plane.
The 13. flare formula tension legs as claimed in claim 1 blower foundation that floats, is characterized in that, described unsteady blower foundation also comprises the pylon base for supporting being arranged on top braces platform.
The 14. flare formula tension legs as claimed in claim 13 blower foundation that floats, is characterized in that, pylon base for supporting comprises:
Support tube, is arranged on top braces platform;
A plurality of strut bars, around support tube setting, one end of each strut bar is connected to the top of support tube, and the other end is connected with top braces platform, with supported cylinder obliquely.
The 15. flare formula tension legs as claimed in claim 14 blower foundation that floats, is characterized in that, wherein, the inside of support tube forms accessory equipment installing space.
The 16. flare formula tension legs as claimed in claim 10 blower foundation that floats, is characterized in that, the central authorities of described top braces platform are provided with pylon base for supporting, with the bottom of support tower.
The 17. flare formula tension legs as claimed in claim 1 blower foundation that floats, is characterized in that, the outer edge of described lower support structure forms mooring pipe, and described mooring pipe is connected with tension leg by universal-joint.
18. 1 kinds of offshore wind generatings, comprise the unsteady blower foundation of flare formula tension leg as described in any one in claim 1 to 17 and are arranged on pylon, blade and the wind power generating set on this unsteady blower foundation.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420096586.1U CN203767042U (en) | 2014-03-04 | 2014-03-04 | Outward floating type tension leg floating wind turbine foundation and offshore wind turbine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420096586.1U CN203767042U (en) | 2014-03-04 | 2014-03-04 | Outward floating type tension leg floating wind turbine foundation and offshore wind turbine |
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| CN203767042U true CN203767042U (en) | 2014-08-13 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103818523A (en) * | 2014-03-04 | 2014-05-28 | 新疆金风科技股份有限公司 | Floating fan base with flare type tension legs, marine wind-driven generator and construction method |
| CN106697209A (en) * | 2016-12-27 | 2017-05-24 | 浙江海洋大学 | Deep water tension leg platform device and real-time monitoring method of vertical pipe thereof |
| CN109458304A (en) * | 2018-11-30 | 2019-03-12 | 上海电气风电集团有限公司 | A kind of semisubmersible-type floatation type blower foundation suitable for big megawatt-level wind unit |
| EP3972895A4 (en) * | 2019-05-21 | 2023-06-07 | AEgir Harvest AS | A floating structure and method of installation |
-
2014
- 2014-03-04 CN CN201420096586.1U patent/CN203767042U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103818523A (en) * | 2014-03-04 | 2014-05-28 | 新疆金风科技股份有限公司 | Floating fan base with flare type tension legs, marine wind-driven generator and construction method |
| WO2015131756A1 (en) * | 2014-03-04 | 2015-09-11 | 新疆金风科技股份有限公司 | Flare-type tensile legs floating wind turbine base, offshore wind turbine and construction method |
| CN103818523B (en) * | 2014-03-04 | 2016-09-14 | 新疆金风科技股份有限公司 | Flare formula tension leg floating blower foundation, offshore wind generating and construction method |
| EP3115600A4 (en) * | 2014-03-04 | 2017-12-13 | Xinjiang Goldwind Science & Technology Co. Ltd. | Flare-type tensile legs floating wind turbine base, offshore wind turbine and construction method |
| US10293890B2 (en) | 2014-03-04 | 2019-05-21 | Xinjiang Goldwind Science & Technology Co., Ltd. | Flare-type tensile legs floating wind turbine base, offshore wind turbine and construction method |
| CN106697209A (en) * | 2016-12-27 | 2017-05-24 | 浙江海洋大学 | Deep water tension leg platform device and real-time monitoring method of vertical pipe thereof |
| CN109458304A (en) * | 2018-11-30 | 2019-03-12 | 上海电气风电集团有限公司 | A kind of semisubmersible-type floatation type blower foundation suitable for big megawatt-level wind unit |
| EP3972895A4 (en) * | 2019-05-21 | 2023-06-07 | AEgir Harvest AS | A floating structure and method of installation |
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