CN112128064B - Floating type fan power generation system - Google Patents
Floating type fan power generation system Download PDFInfo
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- CN112128064B CN112128064B CN202011011427.3A CN202011011427A CN112128064B CN 112128064 B CN112128064 B CN 112128064B CN 202011011427 A CN202011011427 A CN 202011011427A CN 112128064 B CN112128064 B CN 112128064B
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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
- 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
- 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
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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
- F03D13/22—Foundations specially adapted for wind motors
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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
- B63B2021/505—Methods for installation or mooring of floating offshore platforms on site
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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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- 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
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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
- F05B2240/95—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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Combustion & Propulsion (AREA)
- Sustainable Development (AREA)
- Ocean & Marine Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Energy (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Architecture (AREA)
- Wind Motors (AREA)
Abstract
The invention discloses a floating type fan power generation system, which comprises: the system comprises a fan power generation device, a tower, a supporting foundation and a mooring device; one end of the tower is connected with the fan power generation device, and the other end of the tower is connected with the supporting foundation; the supporting foundation is of an arch structure, floats in water and is used for supporting the tower and the fan power generation device so as to enable the fan power generation device to float on the water surface; the mooring device penetrates through the supporting foundation and fixes the supporting foundation on the seabed so as to enable the supporting foundation, the tower and the wind turbine power generation device to be in a stable state. The invention has good advantages in the aspects of the stability in a floating state, the economy of material cost and the convenience of installation and construction.
Description
Technical Field
The invention relates to the technical field of offshore power generation, in particular to a floating type fan power generation system.
Background
With the wide application and popularization of green energy, the offshore power generation technology is more and more emphasized, so that a wind field is developed to the sea from the land and has a trend from the offshore to the deep and distant sea, and offshore wind power planning in China is mostly located in an area with the water depth of less than 50 m.
At present, fixed fan foundations such as single piles, jacket pipes, high-rise pile cap platforms and the like are mostly used at coastal beaches and shallow water; offshore floating wind turbine foundations, such as single column, semi-submersible, tension leg, etc., are often used at deep offshore depths. Compared with the European friendly sea area environment, the sea area water depth in China is medium, the offshore wind resources are unstable and are often accompanied by typhoons, and the like, so that the floating type fan foundation commonly used in the market has some problems if used in the sea area in China, for example, the single column type floating type fan foundation has overlarge water depth requirement and is not matched with the transition water depth (the water depth is less than 50m) in China; the semi-submersible connecting rod is large in size, high in flexibility and easy to deform, and the movement of the floating foundation along with waves cannot be effectively controlled by using conventional mooring; the production and installation technology of tension leg mooring is not mature at present in China.
In addition, due to special environmental conditions such as deep sea water, wind waves and the like, under frequent swaying, surging and heaving motions, bending moment and shearing force of the tower bottom are concentrated, and the structural fatigue strength requirement is high in a conventional tower-barrel type wind driven generator, so that the structural size of the tower barrel is usually increased and thickened, the material cost is increased, and the offshore power generation cost has a large difference from the equivalent on-grid power consumption cost. Therefore, the development of a floating type fan power generation system which is suitable for the sea area conditions in China and can meet the requirements of low cost and high performance is urgently needed.
Disclosure of Invention
The invention aims to provide a floating type fan power generation system which is suitable for different sea area conditions and meets the requirements of low cost and high performance.
In order to achieve the purpose, the invention is realized by the following technical scheme:
a floating wind turbine power generation system comprising: the system comprises a fan power generation device, a tower, a supporting foundation and a mooring device;
one end of the tower is connected with the fan power generation device, and the other end of the tower is connected with the supporting foundation;
the supporting foundation is of an arch structure, floats in water and is used for supporting the tower and the fan power generation device so as to enable the fan power generation device to float on the water surface;
the mooring device penetrates through the supporting foundation and fixes the supporting foundation on the seabed so as to enable the supporting foundation, the tower and the wind turbine power generation device to be in a stable state.
Preferably, the tower is a truss structure; the tower comprises: a plurality of upright posts, a plurality of cross rods and a plurality of diagonal web members;
one end of each upright post is fixedly connected with the support foundation, and the other end of each upright post is fixedly connected with the fan power generation device; all the upright posts form an outer frame of the tower, and the outer frame is of a prismatic table structure;
each cross rod is arranged between any two upright posts, and all the cross rods positioned on the same horizontal plane form a closed polygon;
each oblique web member sets up in arbitrary two between the stand, and each oblique web member is located the inside of outer frame.
Preferably, all the cross bars on different horizontal planes are arranged at intervals along the vertical direction; and the cross bar closest to the supporting foundation adopts a damping supporting rod.
Preferably, the support base comprises: a first arched support beam and a second arched support beam;
the first arched support beam is fixedly connected with the outer frame of the tower;
the second arched support beam is fixedly connected with the first arched support beam, and a containing space for containing the mooring device is arranged inside the second arched support beam, so that the mooring device penetrates through the second arched support beam.
Preferably, the arch axes of the first arched support beam and the second arched support beam are tangent, and the arch lines of the first arched support beam and the second arched support beam are orthogonal;
the openings of the first arched supporting beam and the second arched supporting beam face the water surface.
Preferably, the number of the first arched support beams and the number of the second arched support beams are several;
all the first arched supporting beams are arranged at intervals, and any two first arched supporting beams are parallel;
all the second arched supporting beams are arranged at intervals.
Preferably, the supporting base further comprises: a plurality of first tensioning devices and a plurality of second tensioning devices;
each first tensioning device is correspondingly and fixedly connected with two ends of each first arched support beam so as to tension each first arched support beam;
each second tensioning device is correspondingly and fixedly connected with two ends of each second arched supporting beam so as to tension each second arched supporting beam.
Preferably, the supporting base further comprises: a first buoyancy device and a second buoyancy device;
the first buoyancy device is correspondingly arranged at the end part of the first arched support beam so as to enable the first arched support beam to float in water;
the second buoyancy device is correspondingly arranged at the end part of the second arched support beam so as to enable the second arched support beam to float in water.
Preferably, the number of the first buoyancy device and the second buoyancy device is several;
each first buoyancy device is streamline;
and an accommodating space for accommodating the mooring device is arranged in each second buoyancy device.
Preferably, the supporting base further comprises: a fin stabilizer;
the fin stabilizer is arranged on the first buoyancy device, and one end of the fin stabilizer is fixedly connected with the side wall of the first buoyancy device at a preset angle.
Preferably, the preset angle ranges from 30 degrees to 90 degrees.
Preferably, the mooring device comprises: the anchoring weight blocks are arranged at two ends of the mooring cable;
one end of the anchoring weight is fixedly connected with the mooring cable, and the other end of the anchoring weight is fixed on the seabed;
the mooring cable penetrates through the second arched support beam and the second buoyancy device and fixes the second arched support beam on the seabed through the anchoring weights at two ends of the mooring cable.
Preferably, the mooring device further comprises: mooring winch and fluke member;
the mooring winch is arranged in the accommodating space of the second buoyancy device and used for adjusting the length of the mooring cable;
the fluke member is disposed on a side wall of the anchoring weight to secure the anchoring weight to the seabed.
Compared with the prior art, the invention has at least one of the following advantages:
according to the floating type fan power generation system provided by the invention, the supporting base is of an arch structure, and an arch supporting beam and a tensioning device are combined, so that not only can a stable supporting force be provided for the tower frame and the fan power generation device, but also the floating type fan power generation system is not easy to deform; the support foundation also has the characteristic of simple structure and has great advantages in material cost.
The buoyancy device and the anti-rolling fins in the supporting foundation can improve the swaying, surging and heaving of the supporting foundation while providing buoyancy, so that the supporting foundation, the tower and the wind turbine generator can keep stable state in a complex wind and wave environment.
The truss type tower is adopted instead of a conventional cylinder type tower, so that bending moment and shearing force generated when a wind wheel rotates under wind force can be dispersed to each member angular point, and more stable support is provided for the fan power generation device; the material consumption of the tower can be saved, and the material cost is reduced.
The damping support rod is arranged in the tower frame, so that the support foundation can be restrained from shaking transmitted to the fan power generation device under the action of waves, and the tower frame provides more stable support for the fan power generation device.
The mooring device can ensure that the supporting foundation can keep a stable floating state in a storm environment through the mooring force provided by the anchoring weight block; the mooring lines allow the mooring forces to penetrate the arched support beams, thereby providing a stronger mooring of the mooring device.
The invention can make the mooring device adapt to various water depth environments, especially the transitional water depth environment in China, and can make the installation of the mooring device more convenient by adjusting the length of the mooring cable.
Drawings
Fig. 1 is a schematic structural diagram of a floating wind turbine power generation system according to an embodiment of the present invention;
fig. 2 is a schematic view of a damping support rod of a floating fan power generation system according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a first tensioner and a second tensioner of a floating wind turbine power generation system according to an embodiment of the present invention;
FIG. 4 is a schematic view of a first buoyancy device of a floating wind turbine power generation system according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of a second buoyancy device of a floating wind turbine power generation system according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of an anchor weight of a floating wind turbine power generation system according to an embodiment of the present invention.
Detailed Description
The floating wind turbine power generation system according to the present invention will be described in detail with reference to the accompanying drawings and embodiments. The advantages and features of the present invention will become more apparent from the following description. It is to be noted that the drawings are in a very simplified form and are all used in a non-precise scale for the purpose of facilitating and distinctly aiding in the description of the embodiments of the present invention. To make the objects, features and advantages of the present invention comprehensible, reference is made to the accompanying drawings. It should be understood that the structures, ratios, sizes, and the like shown in the drawings and described in the specification are only used for matching with the disclosure of the specification, so as to be understood and read by those skilled in the art, and are not used to limit the implementation conditions of the present invention, so that the present invention has no technical significance, and any structural modification, ratio relationship change or size adjustment should still fall within the scope of the present invention without affecting the efficacy and the achievable purpose of the present invention.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
As shown in fig. 1 to 6, the present embodiment provides a floating type wind turbine power generation system, including: a wind turbine generator 110, a tower 120, a support foundation 130, and a mooring 140; one end of the tower 120 is connected to the wind turbine generator 110, and the other end is connected to the supporting base 130; the supporting base 130 is an arch structure, and the supporting base 130 floats in the water and is used for supporting the tower 120 and the wind turbine generator 110 so that the wind turbine generator 110 floats on the water surface 101; the mooring device 140 extends through the support foundation 130 and secures the support foundation 130 to the seabed 102 such that the support foundation 130, the tower 120, and the wind turbine generator 110 are in a steady state.
Referring to fig. 1 and 2, the tower 120 is a truss structure; the tower 120 includes: a plurality of uprights 1201, a plurality of crossbars 1202 and a plurality of diagonal web members 1203; one end of each upright 1201 is fixedly connected with the support foundation 130, and the other end is fixedly connected with the fan power generation device 110; all the upright columns 1201 form an outer frame of the tower 120, and the outer frame is of a frustum pyramid structure; each cross bar 1202 is arranged between any two upright posts 1201, and all the cross bars 1202 on the same horizontal plane form a closed polygon; each of the diagonal web members 1203 is disposed between any two of the upright posts 1201, and each of the diagonal web members 1203 is located inside the outer frame.
It will be appreciated that in some other embodiments, all of the crossbars 1202 on different levels are spaced apart vertically; and the cross bar 1202 closest to the support base 130 is a damping support bar.
Specifically, the wind turbine generator 110 includes a wind turbine 1101, a generator, a nacelle, and other components; the wind turbine generator 110 may be disposed at the top end of the tower 120, and the wind wheel 1101 is rotated by wind force to drive the generator to generate electricity, so as to convert the wind energy into electric energy. The height range of the tower 120 can be 10-50 m, the tower 120 has a truss structure formed by a plurality of upright columns 1201, a plurality of cross rods 1202 and a plurality of diagonal web members 1203, and the upright columns 1201 are respectively connected and fixed with the cross rods 1202 and the diagonal web members 1203, so that the tower 120 has a plurality of rod corner points. The tower 120 can distribute bending moment and shearing force generated when the wind wheel 1101 rotates by wind to each pole corner point, thereby providing a more stable support for the wind turbine generator 110. The tower 120 is a truss tower, and the material consumption of the tower 120 can be saved, thereby reducing the material cost, but the invention is not limited thereto.
More specifically, the cross bar 1202 closest to the support base 130 is a damping support bar, which can suppress the vibration of the support base 130 transmitted to the wind turbine generator 110 due to the wave action, so that the tower 120 provides a stable support for the wind turbine generator 110, but the invention is not limited thereto.
In this embodiment, if the number of the pillars 1201 is four, the number of the crossbars 1202 located on the same horizontal plane is also four, and the four crossbars 1202 may form a closed quadrilateral. The cross bars 1202 and the diagonal web 1203 may make the outer frame of the tower 120 more stable, thereby providing the tower 120 with stronger supporting force.
With continued reference to fig. 1, the supporting base 130 includes: a first arched support beam 1301 and a second arched support beam 1302; the first arched support beam 1301 is fixedly connected with the outer frame of the tower 120; the second arched support beam 1302 is fixedly connected to the first arched support beam 1301, and an accommodating space for accommodating the mooring device 140 is provided inside the second arched support beam 1302, so that the mooring device 140 penetrates through the second arched support beam 1302.
It is understood that in some other embodiments, the arch axes of the first arched support beam 1301 and the second arched support beam 1302 are tangent, and the arch lines of the first arched support beam 1301 and the second arched support beam 1302 are orthogonal; the openings of the first arched support beam 1301 and the second arched support beam 1302 face the water surface 101.
In some embodiments, the number of the first arched support beam 1301 and the second arched support beam 1302 is several; all the first arched support beams 1301 are arranged at intervals, and any two first arched support beams 1301 are parallel; all of the second arched support beams 1302 are spaced apart.
Specifically, the outer frame of the tower 120 may be symmetrically fixed to the first arched support beam 1301 along the perpendicular bisector of the first arched support beam 1301, so that the tower 120 may be more firmly fixed to the support base 130. The fixed connection between the first arched support beam 1301 and the second arched support beam 1302 enables the support foundation 130 to have a crossed arched structure, so that the support foundation 130 has a strong supporting capability and is not easy to deform, and the tower 120 and the wind turbine generator 110 can be stably supported; in addition, the supporting base 130 has a simple structure and is advantageous in material cost, but the invention is not limited thereto.
In this embodiment, the number of the first arched support beam 1301 and the second arched support beam 1302 is two, and the length of the first arched support beam 1301 and the second arched support beam 1302 ranges from 40m to 80m, and the height ranges from 20 m to 40 m. Preferably, two of the second arched support beams 1302 may be arranged in parallel.
Referring to fig. 1 and fig. 3, the supporting base 130 further includes: a number of first tensioning devices 1303 and a number of second tensioning devices 1304; each first tensioning device 1303 is correspondingly and fixedly connected with two ends of each first arched support beam 1301 so as to tension each first arched support beam 1301; each of the second tensioning devices 1304 is fixedly connected to both ends of each of the second arched support beams 1302, so as to tension each of the second arched support beams 1302.
Specifically, the first tensioning device 1303 and the second tensioning device 1304 have the same structure, and each include two fixing sleeves 1308, two tensioning cable zippers 1309, and one tensioning cable 1310 disposed between the two tensioning cable zippers 1309; the two fixing sleeves 1308 are respectively and correspondingly fixed at two ends of the first arched supporting beam 1301 or the second arched supporting beam 1302, first ends of the two tensioning cable zippers 1309 are respectively and fixedly connected with the corresponding fixing sleeves 1308 through bolts, and two ends of the tensioning cable 1310 are respectively and fixedly connected with second ends of the two tensioning cable zippers 1309, at this time, the first tensioning device 1303 and the first arched supporting beam 1301 or the second tensioning device 1304 and the second arched supporting beam 1302 can form an arch structure, so that the first tensioning device 1303 can tension the first arched supporting beam 1301 or the second tensioning device 1304 can tension the second arched supporting beam 1302. The first tensioning device 1303 or the second tensioning device 1304 can also be disposed between two fixed connection points of the first arched support beam 1301 and the second arched support beam 1302. The first arched supporting beam 1301 and the second arched supporting beam 1302 can exert strong supporting force of an arched structure under the action of the first tensioning device 1303 and the second tensioning device 1304, and the arched supporting beam is not easily deformed in a tensioned state, so that the supporting base 130 can more stably support the tower 120 and the wind turbine generator 110, but the invention is not limited thereto.
In this embodiment, the number of the first tensioning devices 1303 and the number of the second tensioning devices 1304 are four; the tensioning cable zippers 1309 in the first and second tensioning devices 1303, 1304 can be a turnbuckle, which can be adjusted to adjust the tightness of the tensioning cables 1310, and thus the degree to which the tensioning cables 1310 tighten the first and second arched support beams 1301, 1302.
Referring to fig. 1, fig. 4 and fig. 5, the supporting base 130 further includes: a first buoyancy device 1305 and a second buoyancy device 1306; the first buoyancy device 1305 is correspondingly arranged at the end of the first arched support beam 1301, so that the first arched support beam 1301 floats in water; the second buoyancy device 1306 is correspondingly disposed at an end of the second arched support beam 1302, so that the second arched support beam 1302 floats in water.
It will be appreciated that in some other embodiments, the number of the first buoyancy device 1305 and the second buoyancy device 1306 is several; each of the first buoyancy devices 1305 is streamlined; the interior of each second buoyancy device 1306 is provided with a receiving space for receiving the mooring device 140.
In some embodiments, the support foundation further comprises: fin stabilizer 1307; the fin 1307 is arranged on the first buoyancy device 1305, and one end of the fin 1307 is fixedly connected with the side wall of the first buoyancy device 1305 by a preset angle.
The range of the preset angle is 30-90 degrees.
Specifically, the first buoyancy 1305 provides buoyancy to the above-water components (such as the wind turbine generator, the tower and a portion of the supporting base) of the floating wind turbine generator system, so that the supporting base 130 can float in the water, and the supporting base 130 can support the tower 120 and the wind turbine generator 110 to float on the water surface 101; the first buoyancy device 1305 is streamlined, so that the longitudinal thrust of underwater current to the support foundation 130 can be reduced, and surging of the support foundation 130 is improved; the bottom of the first buoyancy device 1305 has a vertical surface with a certain area, which can act as a heave plate under water to improve the heave of the support foundation 130; the stabilizer fins 1307 provided on the sidewalls of the first buoyancy means 1305 may reduce the lateral effect of the underwater current on the support foundation 130 to improve the sway of the support foundation 130. Therefore, the first buoyancy device 1305 provided with the fin 1307 can not only provide buoyancy for the supporting base 130, but also improve the swaying, surging and heaving of the supporting base 130, so that the aquatic components (such as the wind turbine generator, the tower and a part of the supporting base) of the floating wind turbine generator system can maintain a stable floating state in a complex wind and wave environment, but the invention is not limited thereto.
In this embodiment, the number of the first buoyancy devices 1305 is two, wherein one end surface of one of the first buoyancy devices 1305 is fixedly connected to the first end portions of the two first arched support beams 1301, and one end surface of the other of the first buoyancy devices 1305 is fixedly connected to the second end portions of the two first arched support beams 1301, that is, the first end portions of the two first arched support beams 1301 share one of the first buoyancy devices 1305, and the second end portions of the two first arched support beams 1301 share the other of the first buoyancy devices 1305. The first buoyancy device 1305 can adopt a streamline buoy, the length range of the streamline buoy is 6-10 m, and the width range of the streamline buoy is 3-6 m; the length range of the fin stabilizer 1307 is 2-3 m, the width range is 1-2 m, and the included angle between the fin stabilizer 1307 and the first buoyancy device 1305 located below the water surface 101 can be 40-50 degrees.
Specifically, the second buoyancy device 1306 may also provide buoyancy to the above-water components (e.g., the wind turbine generator, the tower, and a portion of the supporting base) of the floating wind turbine generator system, so that the supporting base 130 may float in the water, and the supporting base 130 may support the tower 120 and the wind turbine generator 110 to float on the water surface 101. The accommodating space for accommodating the mooring device 140 is provided inside the second buoyancy device 1306, so that the mooring device 140 can penetrate through the second buoyancy device 1306, but the invention is not limited thereto.
In this embodiment, the number of the second buoyancy devices 1306 is four, and each second buoyancy device 1306 is fixedly connected to an end of each second arched support beam 1302; the second buoyancy device 1306 may be a floating ball.
Referring to fig. 1, 5 and 6, the mooring device 140 includes: a mooring line 1401 and anchoring weights 1402 provided at both ends of said mooring line 1401; one end of the anchoring weight 1402 is fixedly connected to the mooring line 1401 and the other end is fixed to the sea floor 102; the mooring line 1401 extends through the second arched support beam 1302 and the second buoyancy device 1306 and secures the second arched support beam 1302 to the sea floor 102 by the anchoring weights 1402 at both ends thereof.
It will be appreciated that in some other embodiments, the mooring device 140 further comprises: mooring winch 1403 and fluke member 1404; the mooring winch 1403 is arranged in the accommodating space of the second buoyancy device 1306 for adjusting the length of the mooring line 1401; the jaw members 1404 are disposed on the sidewalls of the anchoring weight 1402 to secure the anchoring weight 1402 to the sea floor 102.
Specifically, the number of mooring lines 1401 is two, which corresponds to the number of second arched support beams 1302, and the number of anchoring weights 1402 is four. The anchoring weight 1402 may provide a stable mooring force to the supporting base 130 by its own weight through the mooring lines 1401 extending through the second arched support beam 1302 and the second buoyancy devices 1306 at both ends of the second arched support beam 1302 to pull the supporting base 130 down and secure the supporting base 130 to the sea floor 102. The mooring force provided by the anchoring weight 1402 may be opposed by the buoyancy provided by the first buoyancy 1305 and the second buoyancy 1306, such that the supporting base 130 may be stably floated in a complex wind and wave environment, and the tower 120 and the wind turbine generator 110 may be stably maintained in a wind and wave environment through the supporting base 130. The mooring line 1401 penetrates through the second arched support beam 1302, so that the acting point of the mooring force is higher and penetrates through the second arched support beam 1302, thereby making the mooring function of the mooring device 140 stronger and maintaining the steady state of the support foundation 130 more effectively, but the invention is not limited thereto.
Specifically, the anchoring weight 1402 may be a high-density, small-volume block, and after the anchoring weight 1402 sinks down to the seabed 102, the claw members 1404 disposed on the side walls of the anchoring weight 1402 may grab the seabed 102 deeply under the tensioning action of the spring members to help the anchoring weight 1402 be fixed on the seabed 102, but the invention is not limited thereto.
Specifically, the mooring winch 1403 is disposed in the accommodating space of the second buoyancy device 1306, so as to adjust the length of the mooring cable 1401 according to the water depth, thereby enabling the mooring cable 1401 to adapt to various water depth environments, particularly the transitional water depth environment in our country. When the mooring device 140 is installed in different water depth environments, the anchoring weight 1402 is simply dropped at a fixed point, and then the mooring winch 1403 is used to adjust the length of the mooring cable 1401 and keep the mooring cable 1401 in a tensioned state, so that the installation and construction of the mooring device 140 are convenient, but the invention is not limited thereto.
In this embodiment, the floating fan power generation system has a width and a length ranging from 40 to 80m, a draft ranging from 20 to 50m, and the anchoring weight 1402 may be a cube with a side length ranging from 8 to 12 m.
In summary, the floating type fan power generation system provided by the embodiment has the advantages that the top end of the tower frame is connected with the fan power generation device, the tower frame is in a truss type, bending moment and shearing force generated when the wind wheel rotates under wind force can be dispersed to angular points of the rod pieces, and accordingly more stable support is provided for the fan power generation device. The supporting foundation floats in water and is of an arch structure, and a first arch-shaped supporting beam, a second arch-shaped supporting beam, a first tensioning device and a second tensioning device in the supporting foundation are matched, so that the tower and the fan power generation device can be stably supported on the water surface by the supporting foundation, and the supporting foundation is not easy to deform; the first buoyancy device, the second buoyancy device and the stabilizing fins in the supporting foundation can improve the swaying, surging and heaving of the supporting foundation while providing buoyancy, so that the supporting foundation, the tower and the wind turbine generator can keep stable in a complex wind and wave environment. The mooring device penetrates through the supporting foundation and fixes the supporting foundation on the seabed, so that the supporting foundation can keep a stable floating state in a storm environment. The floating type fan power generation system provided by the embodiment has good advantages in the aspects of stability in a floating state, economy of material cost and convenience of installation and construction.
While the present invention has been described in detail with reference to the preferred embodiments, it should be understood that the above description should not be taken as limiting the invention. Various modifications and alterations to this invention will become apparent to those skilled in the art upon reading the foregoing description. Accordingly, the scope of the invention should be determined from the following claims.
Claims (12)
1. A floating wind turbine power generation system, comprising: a wind turbine generator (110), a tower (120), a support foundation (130) and a mooring (140);
one end of the tower (120) is connected with the fan power generation device (110), and the other end of the tower is connected with the supporting foundation (130);
the supporting foundation (130) is of an arch structure, and the supporting foundation (130) floats in water and is used for supporting the tower (120) and the wind turbine generator (110) so that the wind turbine generator (110) floats on the water surface (101);
the mooring device (140) penetrates through the supporting foundation (130) and fixes the supporting foundation (130) on the seabed (102) so that the supporting foundation (130), the tower (120) and the wind turbine generator (110) are in a steady state;
the supporting base (130) comprises: a first arched support beam (1301) and a second arched support beam (1302);
the first arched support beam (1301) is fixedly connected with the tower (120);
the second arched support beam (1302) is fixedly connected with the first arched support beam (1301), and a containing space for containing the mooring device (140) is arranged inside the second arched support beam (1302), so that the mooring device (140) penetrates through the second arched support beam (1302).
2. A floating wind turbine power generation system according to claim 1, wherein said tower (120) is a truss-like structure; the tower (120) comprises: a plurality of upright posts (1201), a plurality of cross bars (1202) and a plurality of diagonal web members (1203);
one end of each upright column (1201) is fixedly connected with the supporting foundation (130), and the other end of each upright column is fixedly connected with the fan power generation device (110); all the upright posts (1201) form an outer frame of the tower (120), and the outer frame is of a prismatic table structure;
each cross bar (1202) is arranged between any two upright posts (1201), and all the cross bars (1202) positioned on the same horizontal plane form a closed polygon;
each inclined web member (1203) is arranged between any two upright posts (1201), and each inclined web member (1203) is positioned in the outer frame.
3. A floating wind turbine power generation system according to claim 2,
all the cross rods (1202) positioned on different horizontal planes are arranged at intervals along the vertical direction; and the cross bar (1202) closest to the supporting base (130) adopts a damping supporting rod.
4. A floating wind turbine power generation system according to claim 1,
the arch axes of the first arched support beam (1301) and the second arched support beam (1302) are tangent, and the arch lines of the first arched support beam (1301) and the second arched support beam (1302) are orthogonal;
the openings of the first arched support beam (1301) and the second arched support beam (1302) face the water surface (101).
5. A floating wind turbine power generation system according to claim 1,
the number of the first arched support beam (1301) and the number of the second arched support beam (1302) are both a plurality;
all the first arched supporting beams (1301) are arranged at intervals, and any two first arched supporting beams (1301) are parallel;
all of the second arched support beams (1302) are spaced apart.
6. A floating wind turbine power generation system according to claim 1, wherein said support foundation (130) further comprises: a number of first tensioning devices (1303) and a number of second tensioning devices (1304);
each first tensioning device (1303) is correspondingly and fixedly connected with two ends of each first arched supporting beam (1301) so as to tension each first arched supporting beam (1301);
each second tensioning device (1304) is fixedly connected with two ends of each second arched support beam (1302) correspondingly so as to tension each second arched support beam (1302).
7. A floating wind turbine power generation system according to claim 1, wherein said support foundation (130) further comprises: a first buoyancy device (1305) and a second buoyancy device (1306);
the first buoyancy device (1305) is correspondingly arranged at the end part of the first arched supporting beam (1301) so that the first arched supporting beam (1301) can float in water;
the second buoyancy device (1306) is correspondingly arranged at the end part of the second arched supporting beam (1302) so that the second arched supporting beam (1302) floats in water.
8. A floating wind turbine power generation system according to claim 7,
the number of the first buoyancy device (1305) and the second buoyancy device (1306) is several;
each of said first buoyancy means (1305) is streamlined;
the interior of each second buoyancy device (1306) is provided with a containing space for containing the mooring device (140).
9. A floating wind turbine power generation system according to claim 7, wherein said support foundation further comprises: a stabilizer fin (1307);
the fin stabilizer (1307) is arranged on the first buoyancy device (1305), and one end of the fin stabilizer (1307) is fixedly connected with the side wall of the first buoyancy device (1305) at a preset angle.
10. A floating fan power generation system as claimed in claim 9 wherein said predetermined angle is in the range of 30 to 90 degrees.
11. A floating wind turbine power generation system according to claim 7, wherein said mooring means (140) comprises: a mooring line (1401) and anchoring weights (1402) arranged at both ends of the mooring line (1401);
one end of the anchoring weight (1402) is fixedly connected with the mooring line (1401) and the other end is fixed on the seabed (102);
the mooring line (1401) extends through the second arched support beam (1302) and the second buoyancy means (1306) and secures the second arched support beam (1302) to the seabed (102) by the anchoring weights (1402) at both ends thereof.
12. A floating wind turbine power generation system according to claim 11, wherein said mooring means (140) further comprises: a mooring winch (1403) and a fluke member (1404);
the mooring winch (1403) is arranged in the accommodating space of the second buoyancy device (1306) and used for adjusting the length of the mooring cable (1401);
the jaw members (1404) are disposed on the sidewalls of the anchoring weight (1402) to secure the anchoring weight (1402) to the seabed (102).
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