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CN116480531A - Sleeve structure, offshore wind turbine, sleeve structure system, and offshore wind turbine system - Google Patents

Sleeve structure, offshore wind turbine, sleeve structure system, and offshore wind turbine system Download PDF

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Publication number
CN116480531A
CN116480531A CN202310032153.3A CN202310032153A CN116480531A CN 116480531 A CN116480531 A CN 116480531A CN 202310032153 A CN202310032153 A CN 202310032153A CN 116480531 A CN116480531 A CN 116480531A
Authority
CN
China
Prior art keywords
adapter
wind turbine
offshore wind
sleeve structure
struts
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202310032153.3A
Other languages
Chinese (zh)
Inventor
深津伸
加贺美畅一
松尾宪司
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Steel Engineering Co Ltd
Original Assignee
Nippon Steel and Sumikin Engineering Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nippon Steel and Sumikin Engineering Co Ltd filed Critical Nippon Steel and Sumikin Engineering Co Ltd
Publication of CN116480531A publication Critical patent/CN116480531A/en
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • 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
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
    • E02B17/02—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor placed by lowering the supporting construction to the bottom, e.g. with subsequent fixing thereto
    • E02B17/027—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor placed by lowering the supporting construction to the bottom, e.g. with subsequent fixing thereto steel structures
    • 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
    • F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
    • E02B17/0004—Nodal points
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
    • E02B2017/0091—Offshore structures for wind turbines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2240/00—Components
    • F05B2240/90—Mounting on supporting structures or systems
    • F05B2240/95—Mounting on supporting structures or systems offshore
    • 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)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Wind Motors (AREA)
  • Foundations (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)

Abstract

The invention relates to a sleeve structure, an offshore wind turbine, a sleeve structure system and an offshore wind turbine system. The sleeve structure includes an adapter for supporting an offshore wind turbine, and a plurality of struts provided on the adapter, at least one strut of the plurality of struts includes a 1 st curved portion, and a distance from one end of the one strut, which is on the adapter side, to the 1 st curved portion is shorter than a distance from the other end of the one strut, which is on the opposite side from the adapter, to the 1 st curved portion.

Description

Sleeve structure, offshore wind turbine, sleeve structure system, and offshore wind turbine system
Technical Field
The invention relates to a sleeve structure, an offshore wind turbine, a sleeve structure system and an offshore wind turbine system.
The present application is based on Japanese patent application No. 2022-007866 filed on 1/21/2022 and claims priority, and the contents thereof are incorporated herein.
Background
A plurality of (usually more than 10) offshore fans for wind power generation are built in one wind power generation plant. In order to reduce the engineering and cost, the construction of the fan is generalized as much as possible, including the sleeve structure.
Patent document 1 discloses a technique for avoiding resonance of a structure in water. Specifically, an underwater structure is disclosed in which a filler is filled in a support member so as to freely determine the natural period.
Patent document 2 discloses a joint structure in which a filling position of cement slurry between a steel pipe pile and an externally inserted steel pipe is defined in order to facilitate the removal operation of the pile structure.
Patent document 1: international publication No. 2011/068152
Patent document 2: japanese patent laid-open No. 2020-7728
The adaptor for connecting the offshore wind turbine with the sleeve structure has a complex structure and high design and manufacturing burden. Therefore, it is preferable to generalize the structure of the adapter. However, even in the same wind farm, there is a variation in foundation conditions and water depth depending on the construction site of the wind turbine. Therefore, there is a general deviation in the width of the sleeve structure fixed to the foundation via the foundation piles and supporting the offshore wind turbine, and in the inclination angle of the stay in the sleeve structure. Therefore, it is an object to generalize the structure of the adapter for various shapes of sleeve structures.
Disclosure of Invention
The present invention has been made in view of the above circumstances, and an object thereof is to provide a sleeve structure, an offshore wind turbine, a sleeve structure system, and an offshore wind turbine system, each of which is provided with an adapter capable of generalizing a structure.
The sleeve structure according to claim 1 of the present invention comprises: an adapter for supporting the offshore wind turbine; and a plurality of struts provided on the adapter, at least one strut of the plurality of struts including a 1 st curved portion, wherein a distance from one end of the one strut, which is on the adapter side, to the 1 st curved portion is shorter than a distance from the other end of the one strut, which is on the opposite side from the adapter, to the 1 st curved portion.
According to the above aspect, at least one of the plurality of struts includes the 1 st bend. Accordingly, even when the intervals between the lower end struts of the plurality of sleeve structures are different, the structure of the adapter provided in the sleeve structure can be generalized by appropriately adjusting the bending angle of the 1 st bending portion and the length of the struts not more than the 1 st bending portion.
Further, a distance from one end of one of the plurality of struts on the adapter side to the 1 st curved portion is shorter than a distance from the other end of the one strut on the opposite side to the adapter side to the 1 st curved portion. That is, the 1 st bending portion is provided on the adapter side in the longitudinal direction of the stay. When the adapter is used in common among the plurality of sleeve structures, the structure above the 1 st bending portion in the sleeve structure is used in common. Thus, the 1 st bending portion is provided in the vicinity of the adapter, whereby the portion for general use can be minimized.
The sleeve structure according to claim 2 of the present invention comprises: an adapter for supporting the offshore wind turbine; and a plurality of struts provided to the adapter, at least one strut of the plurality of struts including a 1 st bending portion, the sleeve structure further comprising: a 1 st support structure connected to the adapter and closer to the foundation than the adapter; and a 2 nd support structure connected to the 1 st support structure and closer to the foundation than the 1 st support structure, wherein the 1 st bending portion is provided between the adapter and the 1 st support structure, and the 1 st bending portion is provided between a lower end of the adapter and an upper end of an intersection point of an upper end of a support included in the 1 st support structure and the one column.
According to the above aspect, at least one of the plurality of struts includes the 1 st bend. Accordingly, even when the intervals between the lower end struts of the plurality of sleeve structures are different, the structure of the adapter provided in the sleeve structure can be generalized by appropriately adjusting the bending angle of the 1 st bending portion and the length of the struts not more than the 1 st bending portion.
Further, the 1 st bending portion is provided between the adapter and the 1 st support structure. Thus, the portion of the sleeve structure below the 1 st support structure can be designed independently for each sleeve structure, and only the adapter can be used in common. Therefore, the design study of the sleeve structure can be easily and effectively performed.
The 1 st bending portion is provided between the lower end of the adapter and the upper end of the intersection of the upper end of the support included in the 1 st support structure and one of the struts. By setting the 1 st bending portion at a position distant from the adapter in this way, it is possible to prevent an input to the adapter from being directly applied to the 1 st bending portion. Therefore, the concentration of large stress on the 1 st bending portion can be suppressed.
In the casing structure according to claim 3 of the present invention, in the casing structure according to claim 1 or 2, the angle of the 1 st curved portion is determined according to a tower shape of the offshore wind turbine, a width of the adapter, a water depth of the ocean floor, or a foundation condition of the ocean floor.
According to the above-described aspect, the angle of the 1 st bending portion is determined according to the tower shape of the offshore wind turbine, the width of the adapter, the water depth of the ocean floor, or the foundation condition of the ocean floor. This makes it possible to make the sleeve structure an optimal structure for matching with the installation site.
In the ferrule structure according to claim 4 of the present invention, in the ferrule structure according to claim 1, the position of the 1 st bending portion is the same as the position of the lower end of the adapter when viewed in the horizontal direction.
According to the above-mentioned scheme, the position of the 1 st bending part is the same as the lower end position of the adaptor as viewed along the horizontal direction. Thus, the inclination and orientation of the stay inside the adapter can be set independently of the orientation and inclination of the stay located below the adapter. Therefore, the degree of freedom of design can be improved.
In the sleeve structure according to claim 5 of the present invention, in the sleeve structure according to claim 2, the position or angle of the 1 st bending portion is determined based on the length or inclination of each of the plurality of supports included in the 1 st support structure.
According to the above-described aspect, the position or angle of the 1 st bending portion is determined according to the length or inclination of each of the plurality of supports included in the 1 st support structure. That is, the specification of the 1 st bending portion is determined based on the structure of the support member having the function of ensuring the strength of the sleeve structure. This allows the structure above the 1 st bending portion in the sleeve structure to be used in common, and ensures the strength of the sleeve structure.
In the sleeve structure according to claim 6 of the present invention, in the sleeve structure according to any one of claims 1 to 5, the position of the 1 st bending portion is the same as the position of the 2 nd bending portion, as viewed in the horizontal direction, and the 2 nd bending portion is a bending portion of the plurality of struts that is different from the one strut and corresponds to the 1 st bending portion.
According to the above-described aspect, the 1 st curved portion of one of the plurality of struts is located at the same position as the 2 nd curved portion of the strut different from the one strut, as viewed in the horizontal direction. That is, the bent portions are provided at the same height in the plurality of struts. Thus, when the design of the sleeve structure is studied by making the foundation conditions of the installation sites of the plurality of struts included in one sleeve structure common, the size can be easily and effectively managed. In addition, the design conditions for the adapter in the plurality of sleeve structures are unified, and the design study of the sleeve structure can be effectively performed.
In the casing structure according to claim 7 of the present invention, in the casing structure according to claim 6, the angle of the 1 st curved portion and the angle of the 2 nd curved portion are axisymmetric with respect to an axis parallel to the vertical direction and passing through the center of the offshore wind turbine.
According to the above aspect, the angle of the 1 st curved portion and the angle of the 2 nd curved portion are axisymmetric with respect to an axis parallel to the vertical direction and passing through the center of the offshore wind turbine. By making the structure of the sleeve structure symmetrical in this way, the load and moment applied to the sleeve structure can be uniformly distributed to each part. Therefore, the sleeve structure can be made more stable. As described above, the skeleton of the sleeve structure is axisymmetric with respect to the axis passing through the center of the offshore wind turbine. However, when the armature of the sleeve structure includes an attachment such as an access passage and the reinforcement of the armature side associated therewith, the sleeve structure is not axisymmetric.
In the sleeve structure according to claim 8 of the present invention, in any one of claims 1 to 5, the position of the 1 st bending portion is different from the position of the 2 nd bending portion, as viewed in the horizontal direction, and the 2 nd bending portion is a bending portion of the plurality of struts, which is different from the one strut, and which corresponds to the 1 st bending portion.
According to the above-described aspect, the position of the 1 st curved portion of one of the plurality of struts is different from the position of the 2 nd curved portion of the strut different from the one strut, as viewed in the horizontal direction. This makes it possible to flexibly cope with a situation where foundation conditions at the installation site of the plurality of struts included in one sleeve structure are different.
In the ferrule structure according to claim 9 of the present invention, in any one of claims 1 to 8, the 3 rd bending portion is provided at the other end of the one strut and at the other end opposite to the adapter.
According to the above aspect, the 3 rd bending portion is provided at the other end of one of the plurality of struts. Thus, when the lower end of the sleeve structure is engaged with the pile driven on the foundation, the angle between the pile and the column can be reliably adjusted. The above-described arrangement has a particularly remarkable effect when the pile and the column are joined by the joining member.
The sleeve structure according to claim 10 of the present invention is the sleeve structure according to any one of claim 1 to claim 9, further comprising a rib provided so as to contact the 1 st curved portion and to contact the lower surface of the adapter.
According to the above aspect, the connector further includes a rib that contacts both the 1 st bending portion and the lower surface of the adapter. This can improve the strength when stress concentrates on the 1 st bending portion, and further ensure the strength of the sleeve structure.
In the casing structure according to claim 11 of the present invention, in the casing structure according to any one of claims 1 to 10, the angle of the 1 st curved portion is the same as the angle of the 1 st curved portion as viewed in the 2 nd direction, and the direction along the rotation axis of the offshore wind turbine when the offshore wind turbine is oriented in the predetermined direction is the 1 st direction and the direction orthogonal to the 1 st direction and along the horizontal direction is the 2 nd direction.
According to the above aspect, the angle of the 1 st curved portion viewed along the 1 st direction is the same as the angle of the 1 st curved portion viewed along the 2 nd direction orthogonal to the 1 st direction. That is, the stay of the sleeve structure is inclined toward the axis of the offshore wind turbine by the 1 st bending portion without being biased in any direction. This prevents the load and moment applied to the sleeve structure from being dispersed in any direction. Therefore, a more stable sleeve structure can be obtained.
In the casing structure according to claim 12 of the present invention, in any one of claim 1 to claim 11, the 1 st bending portion is bent toward one side of an axis passing through a center of the tower of the offshore wind turbine.
According to the above-described aspect, the 1 st bending portion is bent toward one side of the shaft passing through the center of the tower of the offshore wind turbine. Thereby, the upper end of the stay can be positioned closer to the axis passing through the center of the tower of the offshore wind turbine. Therefore, the upper end of the adapter can be reduced to a preferable pillar shape.
Further, a sleeve structure according to claim 13 of the present invention includes: an adapter for supporting the offshore wind turbine; and a plurality of struts provided on the adapter, at least one of the plurality of struts including a 1 st bending portion, the 1 st bending portion being bent toward a side opposite to an axis passing through a center of the tower of the offshore wind turbine.
According to the above aspect, at least one of the plurality of struts includes the 1 st bend. Accordingly, even when the intervals between the lower end struts of the plurality of sleeve structures are different, the structure of the adapter provided in the sleeve structure can be generalized by appropriately adjusting the bending angle of the 1 st bending portion and the length of the struts not more than the 1 st bending portion.
Further, the 1 st bending portion is bent toward the opposite side to the axis passing through the center of the tower of the offshore wind turbine. Thereby, the upper end of the stay can be located further from the axis passing through the center of the tower of the offshore wind turbine. Therefore, the upper end of the adapter can be enlarged to have a preferable pillar shape.
Further, a sleeve structure according to claim 14 of the present invention includes: an adapter for supporting the offshore wind turbine; and a plurality of struts provided on the adapter, wherein at least one strut of the plurality of struts includes a 1 st straight line portion and a 2 nd straight line portion connected to the 1 st straight line portion, the 1 st straight line portion and the 2 nd straight line portion form a predetermined angle, and a distance from one end of the one strut, which is on the adapter side, to a connection point between the 1 st straight line portion and the 2 nd straight line portion is shorter than a distance from the other end of the one strut, which is on the opposite side from the adapter, to a connection point between the 1 st straight line portion and the 2 nd straight line portion.
According to the above aspect, at least one of the plurality of struts includes the 1 st straight line portion and the 2 nd straight line portion, and the 1 st straight line portion and the 2 nd straight line portion form a predetermined angle. That is, the strut is bent between the 1 st straight portion and the 2 nd straight portion. The distance from one end of the one support column, which is on the side of the adapter, to the connection point between the 1 st straight line portion and the 2 nd straight line portion is shorter than the distance from the other end of the one support column, which is on the opposite side of the adapter, to the connection point between the 1 st straight line portion and the 2 nd straight line portion. By properly adjusting the angle of the bent portion and the length of the strut, the structure of the adapter provided in the sleeve structure can be generalized.
Further, in the offshore wind turbine according to claim 15 of the present invention, the offshore wind turbine includes a sleeve structure including an adapter and a plurality of struts provided on the adapter, and is supported by the sleeve structure, at least one of the plurality of struts includes a 1 st curved portion, and a distance from one end of the one strut, which is on the adapter side, to the 1 st curved portion is shorter than a distance from the other end of the one strut, which is on the opposite side from the adapter, to the 1 st curved portion.
According to the above aspect, in the casing structure included in the offshore wind turbine, at least one of the plurality of struts includes the 1 st bending portion. In this way, when a plurality of offshore wind turbines are provided, the adapter can be used in common.
Further, a sleeve structure system according to claim 16 of the present invention includes: a 1 st casing structure including a 1 st adapter for supporting a 1 st offshore wind turbine and a plurality of struts provided on the 1 st adapter; and a 2 nd casing structure including a 2 nd adaptor for supporting a 2 nd offshore wind turbine and a plurality of struts provided on the 2 nd adaptor, wherein a wind farm or sea area in which the 1 st offshore wind turbine and the 2 nd offshore wind turbine are provided is the same, a frame of the 1 st offshore wind turbine is the same as a frame of the 2 nd offshore wind turbine, a frame of the 1 st adaptor is the same as a frame of the 2 nd adaptor, and an angle of a bent portion of one of the plurality of struts included in the 1 st casing structure is different from an angle of a bent portion of one of the plurality of struts included in the 2 nd casing structure.
According to the above aspect, the angle of the bent portion of one of the plurality of struts included in the 1 st sleeve structure is different from the angle of the bent portion of one of the plurality of struts included in the 2 nd sleeve structure. Thus, even when the foundation conditions are different in the locations where the 1 st fan and the 2 nd fan are installed, the adaptor and the offshore wind turbine located above the curved portion can be used in common by appropriately adjusting the angle of the curved portion and the length of the stay. Therefore, the design study of the sleeve structure system can be effectively performed.
Further, an offshore wind turbine system according to claim 17 of the present invention includes: a 1 st offshore wind turbine including a 1 st casing structure including a 1 st adapter and a plurality of struts provided on the 1 st adapter, the 1 st casing structure being supported by the 1 st adapter; and a 2 nd offshore wind turbine including a 2 nd socket structure including a 2 nd adaptor and a plurality of struts provided on the 2 nd adaptor, the 2 nd socket structure supporting a wind power plant or sea area in which the 1 st offshore wind turbine and the 2 nd offshore wind turbine are provided, a frame of the 1 st offshore wind turbine being identical to a frame of the 2 nd offshore wind turbine, the 1 st socket frame being identical to the 2 nd socket frame, an angle of a bent portion of one of the plurality of struts included in the 1 st socket structure being different from an angle of a bent portion of one of the plurality of struts included in the 2 nd socket structure.
According to the above aspect, the angle of the bent portion of one of the plurality of struts included in the 1 st sleeve structure is different from the angle of the bent portion of one of the plurality of struts included in the 2 nd sleeve structure. Thus, even when the foundation conditions are different in the locations where the 1 st fan and the 2 nd fan are installed, the adaptor and the offshore wind turbine located above the curved portion can be used in common by appropriately adjusting the angle of the curved portion and the length of the stay. Therefore, design research of the offshore wind turbine system can be effectively performed.
ADVANTAGEOUS EFFECTS OF INVENTION
According to the present invention, a sleeve structure, an offshore wind turbine, a sleeve structure system, and an offshore wind turbine system each including an adapter capable of generalizing a structure can be provided.
Drawings
Fig. 1 is a perspective view of a sleeve structure according to an embodiment of the present invention.
Fig. 2 is a front view of the sleeve structure shown in fig. 1.
Fig. 3 is a plan view of the sleeve structure shown in fig. 1.
Fig. 4 shows a modification 1 of the adapter.
Fig. 5 shows a modification 2 of the adapter.
Fig. 6 shows a modification 1 of the rib.
Fig. 7 shows a modification 2 of the rib.
Description of symbols
10: an adapter; 20: a support post; 20b1: a 1 st bending portion; 20b2: a 2 nd bending portion; 20b3: a 3 rd bending portion; 20s1: a 1 st straight line portion; 20s2: a 2 nd straight line portion; 30: a rib; 40: a support; 41: a 1 st support structure; 42: a 2 nd support structure; 100: a sleeve structure; 300: an offshore wind turbine; d1: direction 1; d2: direction 2.
Detailed Description
(embodiment 1)
Hereinafter, a sleeve structure 100 according to an embodiment of the present invention will be described with reference to the drawings.
As shown in fig. 1 and 2, the casing structure 100 is installed on the sea via piles 200 driven on the foundation of the sea floor, and supports an offshore wind turbine 300. Specifically, sleeve structure 100 and pile 200 are connected by joint member 50 provided in sleeve structure 100. The sleeve structure 100 and the offshore wind turbine 300 are connected by the adapter 10 provided in the sleeve structure 100.
The sleeve structure 100 includes the adapter 10, the stay 20, the rib 30, the support 40, and the joint member 50.
The adapter 10 supports the offshore wind turbine 300. The adapter 10 is disposed at the upper end of the casing structure 100 and is a portion to which the lower end of the offshore wind turbine 300 is connected.
As shown in fig. 1, the adapter 10 includes an upper plate 11, a lower plate 12, a web 13, and a receiving opening 14.
The upper side plate 11 is disposed in the horizontal direction on the upper side of the adapter 10. Hereinafter, when the upper side plate 11 is shown, it may be simply referred to as the upper end of the adapter 10. In the present embodiment, the horizontal direction is a direction parallel to the sea surface on which the offshore wind turbine 300 is disposed. As shown in fig. 3, the upper plate 11 has a cross shape, and a receiving opening 14 is arranged at the center.
The lower side plate 12 is disposed in the horizontal direction at the lower end of the adapter 10. Hereinafter, when the lower side plate 12 is shown, it may be simply referred to as the lower end of the adapter 10. As shown in fig. 3, the lower side plate 12 has a cross shape like the upper side plate 11, and has a receiving opening 14 at the center. Thus, the receiving opening 14 is supported by the adapter 10 at the upper and lower positions.
The web 13 is a member that reinforces the upper side plate 11, the lower side plate 12, the receiving opening 14, and the post 20 described later. As shown in fig. 1, the web 13 is a substantially quadrangular plate. The substantially quadrangular 4 sides of the web 13 are connected to the upper side plate 11, the lower side plate 12, the receiving opening 14, and the stay 20, respectively. Thereby, the adapter 10 is reinforced.
The receiving port 14 is a cylindrical member and is disposed in the center of the adapter 10. The receiving opening 14 is supported by the upper side plate 11, the lower side plate 12, and the web 13. In the present embodiment, the offshore wind turbine 300 is connected to the receiving port 14. Thereby, the offshore wind turbine 300 is supported by the adaptor 10.
The support post 20 is provided to the adapter 10. The sleeve structure 100 is provided with a plurality of struts 20. In the present embodiment, the stay 20 is provided at 4. As the support column 20, for example, a steel pipe is used. An adapter 10 is connected to the upper end of the pillar 20. An engagement member 50 is connected to the lower end of the pillar 20. The portion of the stay 20, which is between the upper side plate 11 of the adapter 10 and the 1 st bent portion 20b1 described later, is linear. The web 13 may have a spiral shape at a portion connected to one of the receiving portion 14 and the pillar 20.
At least one pillar 20 among the plurality of pillars 20 provided in the adapter 10 is provided with a 1 st bending portion 20b1. In one of the plurality of struts 20, the distance from one end of the strut 20, which is the side of the adapter 10, to the 1 st curved portion 20b1 is shorter than the distance from the other end of the strut 20, which is the opposite side of the adapter 10, to the 1 st curved portion 20b1. That is, the 1 st bending portion 20b1 is located on the adapter 10 side in the up-down direction of the pillar 20. Specifically, the 1 st bending portion 20b1 is located at least closer to the adapter 10 than the center portion of the pillar 20 in the up-down direction.
In the present embodiment, for example, as shown in fig. 2, the 1 st bending portion 20b1 is provided in the middle between the lower end of the adapter 10, which is the lower side plate 12, and the upper end of the intersection point of the upper end of the support 40 included in the 1 st support structure 41 described later and one of the struts 20. Here, the above-mentioned intersection point refers to a point at which the outer periphery of the support 40 intersects the pillar 20. The upper end of the intersection point is a point located at the upper end of the support 40, among points where the outer periphery of the support 40 intersects the column 20. In the present embodiment, the vertical direction is a direction perpendicular to the sea surface on which the offshore wind turbine 300 is installed. Alternatively, as shown in fig. 5, the 1 st bending portion 20b1 may be provided on the lower side plate 12. That is, the position of the 1 st curved portion 20b1 may be the same as the position of the lower end of the adapter 10 as viewed in the horizontal direction.
The stay 20 located inside the adapter 10 in the vertical direction is disposed so as to be inclined toward the receiving port 14 side by the 1 st bent portion 20b 1. As shown in fig. 4, the 1 st bending portion 20b1 may be used to dispose the stay 20 positioned inside the adapter 10 in the vertical direction so as to be substantially parallel to the vertical direction. That is, as shown in fig. 4, the 1 st bending portion 20b1 may be bent toward the opposite side of the axis passing through the center of the tower of the offshore wind turbine 300 provided in the adapter 10, that is, the center axis of the receiving port 14.
Alternatively, as shown in fig. 2, the support column 20 positioned inside the adapter 10 in the vertical direction may be inclined toward the receiving port 14 side than the support column 20 positioned outside the adapter 10. That is, as shown in fig. 2, the 1 st bending portion 20b1 may be bent toward the center of the tower of the offshore wind turbine 300 provided in the adapter 10, that is, the axis side of the center axis of the receiving port 14.
For example, the stay 20 is connected to the lower side plate 12 by inserting the stay 20 into a through hole provided in the lower side plate 12. Alternatively, the lower side plate 12 may be a so-called through member. Specifically, the support column 20 may be divided by taking the lower side plate 12 as a boundary, and the support column 20 located above the lower side plate 12 and the support column 20 located below the lower side plate 12 may be welded to the lower side plate 12 and connected to each other.
In the present embodiment, the 1 st bending portion 20b1 of any one of the plurality of struts 20 is referred to as a 2 nd bending portion 20b2, which is a bending portion of the strut 20 different from the one strut 20 and corresponds to the 1 st bending portion 20b 1. The 1 st curved portion 20b1 and the 2 nd curved portion 20b2 are positioned at the same position as viewed in the horizontal direction. That is, the 1 st curved portion 20b1 and the 2 nd curved portion 20b2 are located at the same height. Therefore, the plurality of struts 20 included in the sleeve structure 100 have curved portions at the same height in any of the struts 20.
Thus, when the design of the sleeve structure 100 is studied by making the foundation conditions of the installation sites of the plurality of struts 20 included in the sleeve structure 100 common, the size can be easily and effectively managed. In addition, the design conditions for the adapter 10 to be used in common among the plurality of sleeve structures 100 can be unified, and the design study of the sleeve structure 100 can be effectively performed.
Alternatively, when the foundation conditions of the installation sites of the plurality of struts 20 included in the sleeve structure 100 are different and flexible handling is required, the position of the 1 st curved portion 20b1 and the position of the 2 nd curved portion 20b2 may be different when viewed in the horizontal direction.
The ribs 30 strengthen the connection between the adapter 10 and the post 20. Specifically, as shown in fig. 1 and 2, the rib 30 is arranged to contact the 1 st curved portion 20b1 and to contact the lower surface of the adapter 10. The rib 30 is a substantially triangular plate, and one side of the substantially triangular shape of the rib 30 is in contact with the 1 st curved portion 20b1, and the other side is in contact with the lower surface of the adapter 10. This improves the strength when stress concentrates on the 1 st bending portion 20b1, and further ensures the strength of the sleeve structure 100.
The ribs 30 may also be used to ensure the strength of the joint between the receiving portion 14 and the upper side plate 11. Specifically, the rib 30 may be arranged such that one side of the substantially triangular shape of the rib 30 contacts the side surface of the receiving port 14 and the other side contacts the upper surface of the upper side plate 11. When the ribs 30 are mounted between the receiving portion 14 and the upper side plate 11, for example, as shown in fig. 1, 1 rib 30 is arranged from the receiving portion 14 toward the direction in which the support posts 20 are provided. Alternatively, as shown in fig. 6, two ribs 30 may be arranged from the receiving portion 14 toward the direction in which the support posts 20 are provided. In this case, the rib 30 is more preferably arranged directly above the web 13 provided on the lower surface of the upper side plate 11 along the direction in which the web 13 is provided. Alternatively, as shown in fig. 7, three ribs 30 may be arranged from the receiving portion 14 toward the direction in which the support posts 20 are provided. Specifically, 1 rib 30 shown in fig. 1 may be arranged simultaneously with two ribs 30 shown in fig. 6. The present invention is not limited to this, and any number of ribs 30 may be arranged at intervals in the circumferential direction of the receiving port 14.
The support 40 is a member that connects the plurality of struts 20 provided in the sleeve structure 100 to each other and reinforces the sleeve structure 100. The support 40 is, for example, a steel pipe. In the present embodiment, the support 40 is formed in an X-shape between the struts 20 and 20. As shown in fig. 1 and 2, the X-shaped support 40 is provided with two layers in the up-down direction of the sleeve structure 100. In this case, the X-shaped support 40 connected to the adapter 10 and located closer to the sea floor than the adapter 10 is referred to as a 1 st support structure 41. The X-shaped support 40 connected to the 1 st support structure 41 and located closer to the foundation of the sea than the 1 st support structure 41 is referred to as a 2 nd support structure 42.
The 1 st bending portion 20b1 is provided between the adapter 10 and the 1 st support structure 41.
The engagement member 50 engages the sleeve structure 100 with the plurality of piles 200. As shown in fig. 2 and 4, the engagement member 50 is provided at the lower end of the pillar 20. As shown in fig. 1, the engagement member 50 includes a sleeve 51 and a connection member 52.
A plurality of sleeves 51 are provided to one strut 20 among the plurality of struts 20 provided in the sleeve structure 100. The plurality of sleeves 51 include straight portions extending in the vertical direction. The piles 200 are inserted into the plurality of sleeves 51, respectively. Thereby, sleeve structure 100 is connected to pile 200.
The connecting member 52 connects one strut 20 with a plurality of sleeves 51 provided for the one strut 20. That is, one strut 20 and a plurality of sleeves 51 are connected by a connecting member 52. When the pile 200 and the column 20 are joined by the joining member 50, if it is necessary to adjust the angle between the pile 200 and the column 20, the 3 rd bending portion 20b3 may be provided at the other end of one column 20 of the plurality of columns 20 provided to the adapter 10, the other end being on the opposite side from the adapter 10. At this time, a straight line portion of the stay 20 from a portion located at the lower end of the adapter 10 to the 1 st bent portion 20b1 is referred to as a 1 st straight line portion 20s1. The straight line portion between the 1 st curved portion 20b1 and the 3 rd curved portion 20b3 is referred to as a 2 nd straight line portion 20s2. The 1 st straight portion 20s1 and the 2 nd straight portion 20s2 form a predetermined angle by the 1 st curved portion 20b 1. Thus, the other end of the pillar 20, that is, the lower end of the pillar 20 may be parallel to the sleeve 51, or may be set at another optimum angle in view of the study.
The sleeve structure 100 having the above-described respective configurations is disposed in a plurality in the same wind farm or sea area. In this case, the sleeve structure 100 is preferably designed to be identical. However, since foundation conditions of the portions where the sleeve structures 100 are provided are different, it is difficult to make the sleeve structures 100 identical in design. Therefore, it is preferable to unify at least the structure of the offshore wind turbine 300 and the structure of the adapter 10 that is connected to the offshore wind turbine 300 and supports the offshore wind turbine 300, thereby reducing the number of design steps. Specifically, the structures of the adapter 10 and the offshore wind turbine 300 are generalized by the following.
That is, in the casing structure 100 in which a plurality of the struts 20 are arranged, the angle of the 1 st curved portion 20b1 among the plurality of the struts 20 is determined according to the tower shape of the offshore wind turbine 300, the width of the adapter 10, the water depth of the ocean floor, or the foundation condition of the ocean floor. That is, the width of the lower end of the casing structure 100, and the height of the casing structure 100, that is, the distance from the seabed to the adapter 10 are appropriately adjusted by appropriately adjusting the inclination angle of the stay 20 provided in the casing structure 100. The position or angle of the 1 st bending portion 20b1 may be determined based on the length or inclination of each of the plurality of supports 40 included in the 1 st support structure 41. Alternatively, the length or inclination of each of the plurality of supports 40 included in the 1 st support structure 41 may be determined according to the position or angle of the 1 st bent portion 20b 1.
As shown in fig. 3, the direction along the rotation axis of the offshore wind turbine 300 when the offshore wind turbine 300 is oriented in the predetermined direction is referred to as the 1 st direction D1, and the direction orthogonal to the 1 st direction D1 and oriented in the horizontal direction is referred to as the 2 nd direction D2. The 1 st curved portion 20b1 is provided such that the angle of the 1 st curved portion 20b1 viewed along the 1 st direction D1 is the same as the angle of the 1 st curved portion 20b1 viewed along the 2 nd direction D2.
The angle of the 1 st curved portion 20b1 and the angle of the 2 nd curved portion 20b2 are axisymmetric with respect to an axis parallel to the vertical direction and passing through the center of the offshore wind turbine 300.
By configuring the sleeve structure 100 as described above, the structures of the adapter 10 and the offshore wind turbine 300 are commonly used in the plurality of sleeve structures 100.
As described above, according to the sleeve structure 100 of the present embodiment, at least one strut 20 among the plurality of struts 20 includes the 1 st curved portion 20b1. Accordingly, even when the intervals between the lower ends of the plurality of sleeve structures 100 and the struts 20 are different, the structure of the adapter 10 provided in the sleeve structure 100 can be generalized by appropriately adjusting the bending angle of the 1 st bending portion 20b1 and the length of the struts 20 equal to or smaller than the 1 st bending portion 20b1.
The angle of the 1 st curved portion 20b1 is determined according to the tower shape of the offshore wind turbine 300, the width of the adapter 10, the water depth of the ocean floor, or the foundation condition of the ocean floor. This makes it possible to make the sleeve structure 100 an optimal structure for matching with the installation site.
Further, the distance from one end of one of the plurality of struts 20 on the adapter side to the 1 st curved portion 20b1 is shorter than the distance from the other end of the one strut 20 on the opposite side to the adapter 10 to the 1 st curved portion 20b1. That is, the 1 st bending portion 20b1 is provided on the adapter 10 side in the longitudinal direction of the stay 20. When the adapter 10 is used in common among the plurality of sleeve structures 100, the structure above the 1 st bending portion 20b1 in the sleeve structure 100 is used in common. By providing the 1 st bending portion 20b1 in the vicinity of the adapter 10, the portion for general use can be minimized.
Further, the 1 st bending portion 20b1 is provided between the adapter 10 and the 1 st support structure 41. Accordingly, the parts of the sleeve structure 100 below the 1 st support structure 41 can be designed independently for each sleeve structure 100, and only the adapter 10 can be used in common. Therefore, the design study of the sleeve structure 100 can be easily and effectively performed.
The 1 st bending portion 20b1 is provided between the lower end of the adapter 10 and the upper end of the intersection point of the upper end of the support 40 included in the 1 st support structure 41 and the one column 20. By setting the 1 st bending portion 20b1 at a position distant from the adapter 10 in this way, it is possible to prevent stress applied directly to the 1 st bending portion 20b1 to the adapter 10. Therefore, a large stress concentration on the 1 st bending portion 20b1 can be suppressed.
Further, the 1 st bent portion 20b1 is positioned at the same position as the lower end of the adapter 10 as viewed in the horizontal direction. Thus, the inclination and orientation of the support column 20 inside the adapter 10 can be set independently of the orientation and inclination of the support column 20 located below the adapter 10. Therefore, the degree of freedom of design can be improved.
The position or angle of the 1 st bending portion 20b1 is determined according to the length or inclination of each of the plurality of supports 40 included in the 1 st support structure 41. That is, the specification of the 1 st bending portion 20b1 is determined in addition to the structure of the support 40 having the function of ensuring the strength of the sleeve structure 100. This allows the structure of the sleeve structure 100 above the 1 st bent portion 20b1 to be used in common, and ensures the strength of the sleeve structure 100.
Further, the 1 st curved portion 20b1 of one pillar 20 among the plurality of pillars 20 and the 2 nd curved portion 20b2 of the pillar 20 different from the one pillar 20 are the same in position as viewed along the horizontal direction tube. That is, the bent portions are provided at the same height in the plurality of struts 20. Thus, when the foundation conditions of the installation sites of the plurality of struts 20 included in one sleeve structure 100 are made common to study the design of the sleeve structure 100, the size can be easily and effectively managed. In addition, the design conditions for the adapter 10 to be used in common among the plurality of sleeve structures 100 can be unified, and the design study of the sleeve structure 100 can be effectively performed.
The angle of the 1 st curved portion 20b1 and the angle of the 2 nd curved portion 20b2 are axisymmetric with respect to an axis parallel to the vertical direction and passing through the center of the offshore wind turbine 300. By making the structure of the sleeve structure 100 symmetrical in this way, the load and moment applied to the sleeve structure 100 can be uniformly distributed to each portion. Therefore, the sleeve structure 100 can be more stable. As described above, the skeleton of the sleeve structure 100 is axisymmetric with respect to the axis passing through the center of the offshore wind turbine 300. However, when the armature of the sleeve structure 100 includes an attachment such as an access passage and the armature-side reinforcement associated therewith, the sleeve structure is not axisymmetric.
Further, the position of the 1 st curved portion 20b1 of one pillar 20 among the plurality of pillars 20 is different from the position of the 2 nd curved portion 20b2 of the pillar 20 different from the one pillar 20, as viewed in the horizontal direction. This allows flexible handling in the case where the foundation conditions of the installation sites of the plurality of struts 20 included in one sleeve structure 100 are different.
Further, a 3 rd bending portion 20b3 is provided at the other end of one pillar 20 among the plurality of pillars 20. Accordingly, when the lower end of the sleeve structure 100 is engaged with the pile 200 driven on the foundation, the angle between the pile 200 and the column 20 can be reliably adjusted. This case has a particularly remarkable effect when the pile 200 is joined to the column 20 by the joining member 50.
Further, the connector further includes a rib 30 that contacts both the 1 st bent portion 20b1 and the lower surface of the adapter 10. This can improve the strength when stress concentrates on the 1 st bending portion 20b1, and further ensure the strength of the sleeve structure 100.
The angle of the 1 st curved portion 20b1 viewed along the 1 st direction D1 is the same as the angle of the 1 st curved portion 20b1 viewed along the 2 nd direction D2 orthogonal to the 1 st direction D1. That is, the stay 20 of the sleeve structure 100 is inclined toward the axis of the offshore wind turbine 300 by the 1 st bending portion 20b1 without being biased in any direction. This can prevent the load and moment applied to the sleeve structure 100 from being dispersed in any direction. Therefore, the sleeve structure 100 can be made more stable.
Further, as shown in fig. 2, the 1 st bending portion 20b1 is bent toward one side of the shaft passing through the center of the tower of the offshore wind turbine 300. Thus, the upper end of the stay 20 can be positioned closer to the axis passing through the center of the tower of the offshore wind turbine 300. Therefore, the shape of the stay 20 that is preferable for reducing the upper end of the adapter 10 can be obtained.
Further, as shown in fig. 4, the 1 st bending portion 20b1 is bent toward the opposite side to the axis passing through the center of the tower of the offshore wind turbine 300. Thereby, the upper end of the strut 20 can be positioned further from the axis passing through the center of the tower of the offshore wind turbine 300. Therefore, the shape of the stay 20 can be made good for enlarging the upper end of the adapter 10.
At least one strut 20 among the plurality of struts 20 includes a 1 st straight portion 20s1 and a 2 nd straight portion 20s2, and the 1 st straight portion 20s1 and the 2 nd straight portion 20s2 form a predetermined angle. That is, the stay 20 is bent between the 1 st straight portion 20s1 and the 2 nd straight portion 20s 2. The distance from one end of the one support post 20, which is on the side of the adapter 10, to the connection point between the 1 st straight line portion 20s1 and the 2 nd straight line portion 20s2 is shorter than the distance from the other end of the one support post 20, which is on the opposite side of the adapter 10, to the connection point between the 1 st straight line portion 20s1 and the 2 nd straight line portion 20s 2. By properly adjusting the angle of the bent portion and the length of the stay 20, the structure of the adapter 10 provided in the sleeve structure 100 can be generalized.
In addition, in the sleeve structure 100 included in the offshore wind turbine 300, at least one strut 20 among the plurality of struts 20 includes the 1 st curved portion 20b1. In this way, when a plurality of offshore wind turbines 300 are provided, the adapter 10 can be used in common.
(embodiment 2)
Next, a description will be given of a casing structure system according to embodiment 2 of the present invention.
In embodiment 2, the same components as those in embodiment 1 are denoted by the same reference numerals, and description thereof is omitted, so that only the differences will be described.
The sleeve structure system includes a 1 st sleeve structure and a 2 nd sleeve structure. In the casing structure system, the wind power generation field or the sea area (for example, the sea area of 10km square) where the 1 st offshore wind turbine and the 2 nd offshore wind turbine are provided is the same.
The 1 st casing structure includes a 1 st adapter for supporting the 1 st offshore wind turbine and a plurality of struts 20 provided on the 1 st adapter.
The 2 nd casing structure includes a 2 nd adapter for supporting the 2 nd offshore wind turbine and a plurality of struts 20 provided on the 2 nd adapter.
The 1 st sleeve structure and the 2 nd sleeve structure are the sleeve structure 100 in embodiment 1. That is, the 1 st adaptor has the same skeleton as the 2 nd adaptor, and is the adaptor 10 according to embodiment 1.
The 1 st offshore wind turbine and the 2 nd offshore wind turbine are the offshore wind turbines 300 in embodiment 1. That is, the 1 st offshore wind turbine has the same skeleton as the 2 nd offshore wind turbine.
The angle of the bent portion (e.g., 1 st bent portion 20b 1) of one of the plurality of struts 20 included in the 1 st sleeve structure is different from the angle of the bent portion of one of the plurality of struts 20 included in the 2 nd sleeve structure 20. That is, in the casing structure system provided with the plurality of casing structures 100, only the structures of the 1 st casing structure and the 2 nd casing structure are appropriately changed, the 1 st adapter and the 2 nd adapter are made to be the common adapter 10, and the 1 st offshore wind turbine and the 2 nd offshore wind turbine are made to be the common offshore wind turbine 300.
As described above, according to the sleeve structure system of embodiment 2, the angle of the bent portion of one of the plurality of struts 20 included in the 1 st sleeve structure is different from the angle of the bent portion of one of the plurality of struts 20 included in the 2 nd sleeve structure. Thus, even when the foundation conditions are different in the locations where the 1 st fan and the 2 nd fan are installed, the adaptor 10 and the offshore wind turbine 300 located above the curved portion can be used in common by appropriately adjusting the angle of the curved portion and the length of the stay 20. Therefore, the design study of the sleeve structure system can be effectively performed.
(embodiment 3)
Next, an offshore wind turbine system according to embodiment 3 of the present invention will be described.
In embodiment 3, the same components as those in embodiment 1 and embodiment 2 are denoted by the same reference numerals, and description thereof is omitted, thereby only describing the differences.
The offshore wind turbine system includes a 1 st offshore wind turbine and a 2 nd offshore wind turbine. The wind power generation fields or sea areas of the 1 st offshore wind turbine and the 2 nd offshore wind turbine are the same.
The 1 st offshore wind turbine includes a 1 st casing structure having a 1 st adapter and a plurality of struts 20 provided on the 1 st adapter, and is supported by the 1 st adapter.
The 2 nd offshore wind turbine includes a 2 nd casing structure having a 2 nd adapter and a plurality of struts 20 provided on the 2 nd adapter, and is supported by the 2 nd adapter.
The 1 st sleeve structure and the 2 nd sleeve structure are the sleeve structure 100 in embodiment 1. That is, the 1 st adaptor has the same skeleton as the 2 nd adaptor, and is the adaptor 10 according to embodiment 1.
The 1 st offshore wind turbine and the 2 nd offshore wind turbine are the offshore wind turbines 300 in embodiment 1. That is, the 1 st offshore wind turbine has the same skeleton as the 2 nd offshore wind turbine.
The angle of the bent portion (e.g., 1 st bent portion 20b 1) of one of the plurality of struts 20 included in the 1 st sleeve structure is different from the angle of the bent portion of one of the plurality of struts 20 included in the 2 nd sleeve structure 20. That is, in the offshore wind turbine system provided with the plurality of offshore wind turbines 300, only the structures of the 1 st casing structure and the 2 nd casing structure are appropriately changed, the 1 st adapter and the 2 nd adapter are made to be the common adapter 10, and the 1 st offshore wind turbine and the 2 nd offshore wind turbine are made to be the common offshore wind turbine 300.
As described above, according to the offshore wind turbine system of embodiment 3, the angle of the bent portion of one strut 20 among the plurality of struts 20 included in the 1 st casing structure is different from the angle of the bent portion of one strut 20 among the plurality of struts 20 included in the 2 nd casing structure. Thus, even when the foundation conditions are different in the locations where the 1 st fan and the 2 nd fan are installed, the adaptor 10 and the offshore wind turbine 300 located above the curved portion can be used in common by appropriately adjusting the angle of the curved portion and the length of the stay 20. Therefore, design research of the offshore wind turbine system can be effectively performed.
The technical scope of the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit of the present invention.
For example, the sleeve structure system is not limited to the 1 st sleeve structure and the 2 nd sleeve structure, and any number of sleeve structures 100 may be provided.
The offshore wind turbine system is not limited to the 1 st offshore wind turbine and the 2 nd offshore wind turbine, and any number of offshore wind turbines 300 may be provided.
Further, equipment other than the offshore wind turbine may be connected to the receiving port 14 of the adaptor 10.
The components in the above embodiments may be replaced with known components as appropriate within a range not departing from the gist of the present invention, and the above modifications may be appropriately combined.

Claims (17)

1. A sleeve structure, comprising:
an adapter for supporting the offshore wind turbine; and
a plurality of struts disposed on the adapter,
at least one of the plurality of struts includes a 1 st bend,
the distance from one end of the one support column, which is on the adapter side, to the 1 st bending portion is shorter than the distance from the other end of the one support column, which is on the opposite side from the adapter, to the 1 st bending portion.
2. A sleeve structure, comprising:
an adapter for supporting the offshore wind turbine; and
a plurality of struts disposed on the adapter,
at least one of the plurality of struts includes a 1 st bend,
the above-mentioned sleeve structure further includes:
a 1 st support structure connected to the adapter and closer to the foundation than the adapter; and
a 2 nd support structure connected to the 1 st support structure and closer to the foundation than the 1 st support structure,
the 1 st bending part is arranged between the adapter and the 1 st supporting structure,
the 1 st bending portion is provided in the middle between the lower end of the adapter and the upper end of the intersection point of the upper end of the support included in the 1 st support structure and the one column.
3. The sleeve structure according to claim 1 or 2, wherein,
the angle of the 1 st bending portion is determined according to the tower shape of the offshore wind turbine, the width of the adaptor, the water depth of the seabed, or the foundation condition of the seabed.
4. The sleeve structure according to claim 1, wherein,
the position of the 1 st bending part is the same as the position of the lower end of the adapter when seen along the horizontal direction.
5. The sleeve structure according to claim 2, wherein,
the position or angle of the 1 st bending portion is determined according to the length or inclination of each of the plurality of supports included in the 1 st support structure.
6. The sleeve structure according to claim 1 to 5, wherein,
the 1 st bending portion is located at the same position as the 2 nd bending portion as viewed in the horizontal direction, and the 2 nd bending portion is a bending portion of a different pillar from the one pillar among the plurality of pillars and is a bending portion corresponding to the 1 st bending portion.
7. The sleeve structure according to claim 6, wherein,
the angle of the 1 st bending portion and the angle of the 2 nd bending portion are axisymmetric with respect to an axis parallel to the vertical direction and passing through the center of the offshore wind turbine.
8. The sleeve structure according to claim 1 to 5, wherein,
the 1 st bending portion is located at a different position from the 2 nd bending portion as viewed in the horizontal direction, and the 2 nd bending portion is a bending portion of the plurality of struts different from the one strut and corresponds to the 1 st bending portion.
9. The sleeve structure according to claim 1 to 8, wherein,
the other end of the one strut is provided with a 3 rd bending part at the other end opposite to the adapter.
10. The sleeve structure according to claim 1 to 9, wherein,
and a rib provided so as to contact the 1 st bending portion and to contact the lower surface of the adapter.
11. The sleeve structure according to claim 1 to 10, wherein,
regarding the angle of the 1 st curved portion, the direction along the rotation axis of the offshore wind turbine when the offshore wind turbine is oriented in a predetermined direction is referred to as the 1 st direction, the direction perpendicular to the 1 st direction and along the horizontal direction is referred to as the 2 nd direction, and the angle of the 1 st curved portion viewed along the 1 st direction is the same as the angle of the 1 st curved portion viewed along the 2 nd direction.
12. The sleeve structure according to claim 1 to 11, wherein,
the 1 st bending part is bent toward one side of an axis passing through a center of a tower of the offshore wind turbine.
13. A sleeve structure, comprising:
An adapter for supporting the offshore wind turbine; and
a plurality of struts disposed on the adapter,
at least one of the plurality of struts includes a 1 st bend,
the 1 st bending portion is bent toward an opposite side of an axis passing through a center of a tower of the offshore wind turbine.
14. A sleeve structure, comprising:
an adapter for supporting the offshore wind turbine; and
a plurality of struts disposed on the adapter,
at least one of the plurality of struts includes a 1 st straight line portion and a 2 nd straight line portion connected to the 1 st straight line portion,
the 1 st straight line portion and the 2 nd straight line portion form a prescribed angle,
the distance from one end of the one strut, which is on the side of the adapter, to the connection point between the 1 st straight line portion and the 2 nd straight line portion is shorter than the distance from the other end of the one strut, which is on the opposite side of the adapter, to the connection point between the 1 st straight line portion and the 2 nd straight line portion.
15. An offshore wind turbine, which is characterized in that,
the offshore wind turbine includes a sleeve structure having a plurality of struts provided on the adapter, and supported by the sleeve structure,
At least one of the plurality of struts includes a 1 st bend,
the distance from one end of the one support column, which is on the adapter side, to the 1 st bending portion is shorter than the distance from the other end of the one support column, which is on the opposite side from the adapter, to the 1 st bending portion.
16. A sleeve structure system, comprising:
a 1 st casing structure including a 1 st adapter for supporting a 1 st offshore wind turbine and a plurality of struts provided on the 1 st adapter; and
a2 nd casing structure comprising a 2 nd adapter for supporting a 2 nd offshore wind turbine and a plurality of struts provided on the 2 nd adapter,
the wind power generation field or sea area provided with the 1 st offshore wind turbine and the 2 nd offshore wind turbine are the same,
the framework of the 1 st offshore wind turbine is the same as the framework of the 2 nd offshore wind turbine,
the framework of the 1 st adapter is the same as the framework of the 2 nd adapter,
the angle of the bent portion of one of the plurality of struts included in the 1 st sleeve structure is different from the angle of the bent portion of one of the plurality of struts included in the 2 nd sleeve structure.
17. An offshore wind turbine system, comprising:
A 1 st offshore wind turbine including a 1 st casing structure having a 1 st adapter and a plurality of struts provided on the 1 st adapter, and supported by the 1 st adapter; and
the 2 nd offshore wind turbine includes a 2 nd casing structure having a 2 nd adapter and a plurality of struts provided on the 2 nd adapter, and is supported by the 2 nd adapter,
the wind power generation field or sea area provided with the 1 st offshore wind turbine and the 2 nd offshore wind turbine are the same,
the framework of the 1 st offshore wind turbine is the same as the framework of the 2 nd offshore wind turbine,
the framework of the 1 st adapter is the same as the framework of the 2 nd adapter,
the angle of the bent portion of one of the plurality of struts included in the 1 st sleeve structure is different from the angle of the bent portion of one of the plurality of struts included in the 2 nd sleeve structure.
CN202310032153.3A 2022-01-21 2023-01-10 Sleeve structure, offshore wind turbine, sleeve structure system, and offshore wind turbine system Pending CN116480531A (en)

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