CN114892703A - Double-cone grid plate type offshore wind power floating foundation structure - Google Patents

Double-cone grid plate type offshore wind power floating foundation structure Download PDF

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Publication number
CN114892703A
CN114892703A CN202210383813.8A CN202210383813A CN114892703A CN 114892703 A CN114892703 A CN 114892703A CN 202210383813 A CN202210383813 A CN 202210383813A CN 114892703 A CN114892703 A CN 114892703A
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CN
China
Prior art keywords
double
plate type
grid plate
cone
wind power
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Pending
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CN202210383813.8A
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Chinese (zh)
Inventor
高山
王文华
张�杰
黄一
王德志
沈侃敏
王滨
陈金忠
徐云泽
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Dalian University of Technology
PowerChina Huadong Engineering Corp Ltd
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Dalian University of Technology
PowerChina Huadong Engineering Corp Ltd
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Application filed by Dalian University of Technology, PowerChina Huadong Engineering Corp Ltd filed Critical Dalian University of Technology
Priority to CN202210383813.8A priority Critical patent/CN114892703A/en
Publication of CN114892703A publication Critical patent/CN114892703A/en
Pending legal-status Critical Current

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    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D27/00Foundations as substructures
    • E02D27/32Foundations for special purposes
    • E02D27/42Foundations for poles, masts or chimneys
    • E02D27/425Foundations for poles, masts or chimneys specially adapted for wind motors masts
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63BSHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B21/00Tying-up; Shifting, towing, or pushing equipment; Anchoring
    • B63B21/50Anchoring arrangements or methods for special vessels, e.g. for floating drilling platforms or dredgers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63BSHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B35/00Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
    • B63B35/44Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63BSHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B39/00Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude
    • B63B39/005Equipment to decrease ship's vibrations produced externally to the ship, e.g. wave-induced vibrations
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D27/00Foundations as substructures
    • E02D27/32Foundations for special purposes
    • E02D27/52Submerged foundations, i.e. submerged in open water
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63BSHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B35/00Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
    • B63B35/44Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
    • B63B2035/4433Floating structures carrying electric power plants
    • B63B2035/446Floating structures carrying electric power plants for converting wind energy into electric energy
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/70Wind energy
    • Y02E10/727Offshore wind turbines

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Ocean & Marine Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • General Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Wind Motors (AREA)

Abstract

The invention discloses a double-cone grid plate type offshore wind power floating foundation structure which comprises a connecting seat and a double-cone grid plate type stand column, wherein the double-cone grid plate type stand column is fixedly connected with the connecting seat, the double-cone grid plate type stand column comprises a column cylinder part and a frustum part, and the frustum part is sleeved at two ends of the column cylinder part. The water line surface under the stormy wave working condition can be increased, a large enough restoring moment is provided for the system, and the motion stability of the floating structure in deep and far sea severe environments is effectively improved.

Description

Double-cone grid plate type offshore wind power floating foundation structure
Technical Field
The invention belongs to the technical field of offshore wind power development equipment, and particularly relates to a double-cone grid plate type offshore wind power floating foundation structure.
Background
China is in a key stage of energy transformation, and wind energy is used as a renewable clean energy, so that the technology is mature day by day, the cost is reduced continuously, and the wind energy plays a very important role in the development of new energy in China. Offshore wind power generation has unique advantages over onshore wind power generation. The offshore wind resources are rich, and the wind speed and the wind direction are stable; the offshore wind power plant does not occupy land resources; the single machine has large capacity and is suitable for large-scale development. At present, the development of offshore fixed wind power is mainly industrialized, and some offshore wind power plants built in early stage are in the middle and later development stage. However, the development of floating wind power oriented to water depth over 50 m is still in experimental research stage both domestically and internationally. In the long run, with the gradual saturation of the development of wind power resources in intertidal zones and offshore regions, the trend of offshore wind power development from offshore to deep and distant sea is a necessary trend, and the research and development and design of the floating offshore wind turbine structure are imperative.
The floating offshore wind turbine structure is a complex multi-system combined engineering device, is composed of a plurality of subsystems and mainly comprises an upper fan, a middle tower, a lower floating foundation and a mooring system. The offshore wind turbine system belongs to a high-rise structure, the magnitude order of horizontal load is equivalent to that of vertical load, and the action of horizontal overturning moment can cause the floating foundation to generate large-amplitude swinging motion and even generate overturning.
Disclosure of Invention
The invention aims to solve the technical problems in the prior art, and provides a double-cone grid plate type offshore wind power floating foundation structure which can increase the water plane under the storm working condition, provide a large enough restoring moment for a system, and effectively improve the motion stability of the floating structure in deep and far sea severe environments.
In order to solve the technical problems, the invention adopts the following technical scheme:
the utility model provides a floating foundation structure of bipyramid grid tray formula offshore wind power which characterized in that: including connecting seat and bipyramid grid plate formula stand, bipyramid grid plate formula stand and connecting seat fixed connection, bipyramid grid plate formula stand includes cylinder portion and frustum portion, and the both ends of cylinder portion are located to frustum portion cover. Through bipyramid grid tray formula stand, can increase the waterline face under the stormy waves operating mode, for the system provides big enough restoring moment, promote the motion stability of floating structure under deep and far sea adverse circumstances effectively.
Further, the two frustum portions are disposed facing each other. The top surface of frustum portion sets up in opposite directions for the frustum of lower part is forward to be set up, and the frustum on upper portion becomes the reverse setting of back taper, and through the design of this kind of structure, the operating condition design waterline is located the intermediate position in the middle section of hourglass type stand, and is unusual, and middle section cylinder section length is shorter. The running condition design waterline is arranged in the middle section and can have smaller waterline surface compared with the lower section and the upper section which are expanded outwards, and then the wave flow force borne by the structure is smaller when the normal working state is ensured. Simultaneously, the frustum of the upper inverted cone can effectively prevent waves from climbing, and the outward expanding design is ensured not to have additional risks of rising waves and slamming.
Furthermore, the side wall of the cone part is provided with a grid hole, and the aperture of the grid hole is gradually increased from inside to outside. The cone portion enables water flow to easily enter and difficultly exit through the grid holes with one-way contraction, a flow field is disturbed, the purpose of energy dissipation is achieved, the gentle wave pulsation force can also be exerted, and the vibration of the floating body structure is reduced.
Further, the column casing part is provided with a plurality of layers of wing plates, the wing plates are arranged in the frustum part, and the wing plates are arranged at intervals. The post pterygoid lamina can be produced extra flow resistance because of the inflow of water around the interval setting, and then provides extra damping for restraining the large-scale motion of structure, can effectively improve body structure stability.
Further, the width of the wing plate is gradually increased from the center of the column tube part to both ends. The general width gradually increases, can make the pterygoid lamina laminate the inner wall of frustum body, further improves the stability of body structure.
Furthermore, the quantity of bipyramid grid plate formula stand is three and evenly distributed in the outside of connecting seat at least. Through the even bipyramid bar grid formula stand that sets up, can effectively improve overall stability, avoid floating body structure to topple.
Further, the column casing part is provided with an accommodating cavity. Through the setting that holds the chamber for can fill ballast material in column casing portion, like sea water, high density ore, concrete etc. conveniently adjust the draft state and the aquatic gesture of body structure. The size adjustment and the careful internal subdivision division can be carried out according to the actual design requirement.
Furthermore, the biconical grid plate type stand column is provided with a mooring mechanism, the mooring mechanism comprises an anchor machine and a mooring cable, the anchor machine is connected with the mooring cable, and the anchor machine is arranged on the column barrel portion. Through anchor machine and mooring cable, can moor the body structure, improve the overall stability of body structure, avoid being blown away by wind.
Furthermore, the upper frustum part is provided with a guy cable. The inhaul cable is used for connecting the fan tower cylinder arranged on the connecting seat, effectively disperses and transmits the horizontal load transmitted by the fan tower cylinder, greatly slows down the stress condition of the bottom node, and simplifies the structural dimension of the interface of the fan tower cylinder and the floating body structure. Through the position of adjusting the cable point, can adjust overall structure's natural frequency of vibrating, prevent to take place resonance destruction.
Due to the adoption of the technical scheme, the invention has the following beneficial effects:
1) the design of the double-cone grid plate type upright post increases the water line surface of the floating body structure under the working conditions of wind and wave when the floating body structure is subjected to heaving, rolling and pitching, can provide a larger restoring moment for a system in motion, and can effectively improve the motion stability of the floating structure in deep and far sea severe environments;
2) the frustum part of the floating body structure is provided with the unidirectional contraction grid holes, so that water flow is easy to enter and difficult to exit, the flow field is disturbed, the purpose of energy dissipation is achieved, wave pulsation force can be moderated, and the vibration of the floating body structure is reduced.
3) According to the invention, the column-surrounding wing plates arranged on the inner side of the frustum part can generate extra flow resistance for water inflow, so that extra damping is provided for inhibiting large-scale movement of the structure, and the foundation stability can be effectively improved.
4) The frustum portion that sets up in opposite directions can effectively prevent that the wave from climbing, ensures that outer expanding design can not have the extra risk of surfing and slamming.
5) The fan tower section of thick bamboo is connected with the center of connecting seat and is located the structure center, and the tower section of thick bamboo need not additionally to set up changeover portion and stand flotation pontoon.
6) According to the invention, the fan tower cylinder is connected with the double-cone grid plate type upright post through the inhaul cable, so that the horizontal load transmitted by the upper tower cylinder can be effectively dispersed and transmitted, the stress condition of the bottom connecting node is greatly relieved, and the structural size of the interface between the fan tower cylinder and the foundation is simplified. Through the position of adjusting the cable point, can adjust overall structure's natural frequency of shaking, prevent to take place resonance and destroy.
7) The invention has the advantages of semi-submersible structure, wide application range of water depth and suitability for shallow water and deep sea areas.
Drawings
The invention will be further described with reference to the accompanying drawings in which:
FIG. 1 is a schematic structural diagram of a double-cone grid plate type offshore wind power floating foundation structure according to the present invention;
FIG. 2 is a schematic structural view of a double-cone grid plate type column according to the present invention;
FIG. 3 is a schematic structural view of the column-tube part of the present invention;
FIG. 4 is a schematic view of the structure of the frustum portion in the present invention.
In the figure, 1-connecting seat; 2-double cone grid plate type upright post; 3-a cylindrical part; 4-a frustum portion; 5-grid holes; 6-wing plate; 7-sealing plate; 8-an anchor machine; 9-mooring lines; 11-a pull cable; 12-wind turbine tower.
Detailed Description
As shown in fig. 1 to 4, the double-cone grid plate type offshore wind power floating foundation structure of the present invention includes a connecting seat 1 and a double-cone grid plate type upright post 2, the double-cone grid plate type upright post 2 is fixedly connected with the connecting seat 1, the double-cone grid plate type upright post 2 includes a cylindrical portion 3 and a frustum portion 4, and the frustum portion 4 is sleeved at two ends of the cylindrical portion 3. Through bipyramid grid plate formula stand 2, can increase the waterline face under the stormy wave operating mode, for the system provides big enough restoring moment, promote the motion stability of floating structure under deep and far sea adverse circumstances effectively.
The two cone portions 4 are disposed opposite to each other. The top surface of frustum portion 4 sets up in opposite directions for the frustum of lower part is forward to be set up, and the frustum on upper portion becomes the reverse setting of back taper, and through the design of this kind of structure, the operating condition design waterline is located the intermediate position in the middle section of hourglass type stand, and is unusual, and middle section cylinder section length is shorter. The running condition design waterline sets up and can possess littleer waterline face in the middle section and compare in the hypomere and the upper segment that expand outward, and then guarantees that when normal operating condition, the wave flow force that the structure received is less. Simultaneously, the frustum of the upper inverted cone can effectively prevent waves from climbing, and the outward expanding design is ensured not to have additional risks of rising waves and slamming. The bottom surface of the cone portion 4 has a closed structure, and does not have a through hole or the like, and can function as a heave plate.
The side wall of the cone part 4 is provided with a grid hole 5, and the aperture of the grid hole 5 is gradually enlarged from inside to outside. The cone base part 4 makes rivers easily advance difficult play through being equipped with one-way shrink's grid hole 5, disturbs the flow field, reaches the energy dissipation purpose, and the gentle wave pulsation force of doing too reduces floating body structure's vibration.
The cylindrical portion 3 is provided with a plurality of layers of wing plates 6, the wing plates 6 are provided in the tapered table portion 4, and the wing plates 6 are provided at intervals between the layers. The column wing plates 6 arranged at intervals can generate extra flow resistance due to inflow of water, so that extra damping is provided for inhibiting large-scale movement of the structure, and the structural stability of the floating body can be effectively improved.
The width of the wing plate 6 gradually increases from the center of the column part 3 to both ends. The general width gradually becomes larger, so that the wing plates 6 can be attached to the inner wall of the frustum body, and the stability of the floating body structure can be further improved.
The number of the double-cone grid plate type upright posts 2 is at least three and is uniformly distributed on the outer side of the connecting seat 1. Through the even bipyramid bar grid formula stand 2 that sets up, can effectively improve overall stability, avoid the body structure to topple.
The cylindrical portion 3 is provided with an accommodation chamber. Through the setting that holds the chamber for can fill ballast material in column casing portion 3, like sea water, high density ore, concrete etc. conveniently adjust the draft state and the aquatic gesture of body structure. The size adjustment and the careful internal subdivision division can be carried out according to the actual design requirement. The upper end and the lower end of the containing cavity are provided with sealing plates 7 for sealing
Bipyramid grid tray formula stand 2 is equipped with mooring mechanism, and mooring mechanism includes anchor machine 8 and mooring cable 9, and anchor machine 8 is connected with mooring cable 9, and anchor machine 8 is located section of thick bamboo 3. Through anchor machine 8 and mooring line 9, can moor the body structure, improve the overall stability of body structure, avoid being blown away by wind.
The upper end of the frustum portion 4 is provided with a cable 11. The inhaul cable 11 is used for connecting a fan tower cylinder 12 arranged on the connecting seat 1, effectively dispersing and conducting horizontal load conducted by the fan tower cylinder 12, greatly relieving the stress condition of a bottom node, and simplifying the structural dimension of the interface of the fan tower cylinder 12 and the floating body structure. Through the position of adjusting 11 points of cable, can adjust overall structure's natural frequency that shakes, prevent to take place resonance destruction.
Due to the adoption of the technical scheme, the invention has the following beneficial effects:
1) according to the design of the double-cone grid plate type upright post 2, the waterplane surface of the floating body structure under the working conditions of wind waves when the floating body structure is subjected to heaving, rolling and pitching is increased, a larger restoring moment can be provided for a system in motion, and the motion stability of the floating body structure in deep and far sea severe environments can be effectively improved;
2) the cone table part 4 is provided with the unidirectional contraction grating holes 5, so that water flow is easy to enter and difficult to exit, the flow field is disturbed, the purpose of energy dissipation is achieved, wave pulsation force can be gentle and slaved, and the vibration of a floating body structure is reduced.
3) According to the invention, the column-winding wing plates 6 arranged on the inner side of the frustum part 4 can generate extra flow resistance for water inflow, so that extra damping is provided for inhibiting large-scale movement of the structure, and the foundation stability can be effectively improved.
4) The frustum portions 4 arranged in opposite directions can effectively prevent waves from climbing, and the external expansion type design is ensured not to have additional risks of wave and attack.
5) The fan tower barrel 13 is connected with the center of the connecting seat 1 and is located at the center of the structure, and the tower barrel does not need to be additionally provided with a transition section and a stand column buoy.
6) According to the invention, the fan tower drum 13 is connected with the double-cone grid plate type upright post 2 through the inhaul cable 11, so that the horizontal load transmitted by the upper tower drum can be effectively dispersed and transmitted, the stress condition of the bottom connecting node is greatly relieved, and the structural size of the interface between the fan tower drum 13 and a foundation is simplified. Through the position of adjusting 11 points of cable, can adjust overall structure's natural frequency that shakes, prevent to take place resonance destruction.
7) The invention has the advantages of semi-submersible structure, wide application range of water depth and suitability for shallow water and deep sea areas.
The above is only a specific embodiment of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent substitutions or modifications made based on the present invention to solve the same technical problems and achieve the same technical effects are within the scope of the present invention.

Claims (9)

1. The utility model provides a floating foundation structure of bipyramid grid tray formula offshore wind power which characterized in that: the connecting device comprises a connecting seat and a double-cone grid plate type stand column, wherein the double-cone grid plate type stand column is fixedly connected with the connecting seat, the double-cone grid plate type stand column comprises a column tube part and a frustum part, and the frustum part is sleeved at two ends of the column tube part.
2. The double-cone grid plate type offshore wind power floating foundation structure of claim 1, wherein: the two cone portions are arranged opposite to each other.
3. The double-cone grid plate type offshore wind power floating foundation structure of claim 1, wherein: the side wall of the frustum part is provided with a grating hole, and the aperture of the grating hole is gradually increased from inside to outside.
4. The double-cone grid plate type offshore wind power floating foundation structure of claim 1, wherein: the column barrel part is provided with a plurality of layers of wing plates, the wing plates are arranged in the frustum part, and each layer of wing plates are arranged at intervals.
5. The double-cone grid plate type offshore wind power floating foundation structure of claim 4, wherein: the width of the wing plates of different layers is gradually increased from the center of the cylindrical part to two ends.
6. The double-cone grid plate type offshore wind power floating foundation structure of claim 1, wherein: the number of the double-cone grid plate type upright posts is at least three, and the double-cone grid plate type upright posts are uniformly distributed on the outer side of the connecting seat.
7. The double-cone grid plate type offshore wind power floating foundation structure of claim 1, wherein: the column barrel part is provided with an accommodating cavity.
8. The double-cone grid plate type offshore wind power floating foundation structure of claim 1, wherein: the double-cone grid plate type stand column is provided with a mooring mechanism, the mooring mechanism comprises an anchor machine and a mooring cable, the anchor machine is connected with the mooring cable, and the anchor machine is arranged on the column barrel portion.
9. The double-cone grid plate type offshore wind power floating foundation structure of claim 1, wherein: the upper end of the frustum part is provided with a guy cable.
CN202210383813.8A 2022-04-12 2022-04-12 Double-cone grid plate type offshore wind power floating foundation structure Pending CN114892703A (en)

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CN202210383813.8A CN114892703A (en) 2022-04-12 2022-04-12 Double-cone grid plate type offshore wind power floating foundation structure

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Application Number Priority Date Filing Date Title
CN202210383813.8A CN114892703A (en) 2022-04-12 2022-04-12 Double-cone grid plate type offshore wind power floating foundation structure

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116084371A (en) * 2023-02-02 2023-05-09 中国电建集团贵阳勘测设计研究院有限公司 Offshore wind power installation platform

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2667150Y (en) * 2003-12-23 2004-12-29 王艳平 Multiphase flow rotary wing mixer
CN111022269A (en) * 2019-11-12 2020-04-17 中国能源建设集团广东省电力设计研究院有限公司 Offshore foundation structure and offshore wind turbine system
TWM610896U (en) * 2020-12-17 2021-04-21 財團法人船舶暨海洋產業研發中心 Anti-shaking device of floating platform
KR20210077838A (en) * 2019-12-17 2021-06-28 오토렉스 주식회사 Buoyancy structure for floating offshore structure
CN113107748A (en) * 2021-05-14 2021-07-13 江苏科技大学 Offshore floating type power generation device with wind and wave energy mixed utilization
CN113283081A (en) * 2021-05-25 2021-08-20 阳江海上风电实验室 Design method of wave-resistant floating type fan foundation
CN217782119U (en) * 2022-04-12 2022-11-11 中国电建集团华东勘测设计研究院有限公司 Double-cone grid plate type offshore wind power floating foundation structure

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2667150Y (en) * 2003-12-23 2004-12-29 王艳平 Multiphase flow rotary wing mixer
CN111022269A (en) * 2019-11-12 2020-04-17 中国能源建设集团广东省电力设计研究院有限公司 Offshore foundation structure and offshore wind turbine system
KR20210077838A (en) * 2019-12-17 2021-06-28 오토렉스 주식회사 Buoyancy structure for floating offshore structure
TWM610896U (en) * 2020-12-17 2021-04-21 財團法人船舶暨海洋產業研發中心 Anti-shaking device of floating platform
CN113107748A (en) * 2021-05-14 2021-07-13 江苏科技大学 Offshore floating type power generation device with wind and wave energy mixed utilization
CN113283081A (en) * 2021-05-25 2021-08-20 阳江海上风电实验室 Design method of wave-resistant floating type fan foundation
CN217782119U (en) * 2022-04-12 2022-11-11 中国电建集团华东勘测设计研究院有限公司 Double-cone grid plate type offshore wind power floating foundation structure

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116084371A (en) * 2023-02-02 2023-05-09 中国电建集团贵阳勘测设计研究院有限公司 Offshore wind power installation platform
CN116084371B (en) * 2023-02-02 2024-05-24 中国电建集团贵阳勘测设计研究院有限公司 Offshore wind power installation platform

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