CN116062107A - V-shaped offshore wind power floating type supporting foundation with triangular omnibearing diagonal braces - Google Patents
V-shaped offshore wind power floating type supporting foundation with triangular omnibearing diagonal braces Download PDFInfo
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- CN116062107A CN116062107A CN202310175770.9A CN202310175770A CN116062107A CN 116062107 A CN116062107 A CN 116062107A CN 202310175770 A CN202310175770 A CN 202310175770A CN 116062107 A CN116062107 A CN 116062107A
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- 238000007667 floating Methods 0.000 title claims abstract description 252
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 7
- 229910000831 Steel Inorganic materials 0.000 abstract description 3
- 239000010959 steel Substances 0.000 abstract description 3
- 238000005452 bending Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000010248 power generation Methods 0.000 description 3
- 239000003208 petroleum Substances 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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- 238000004519 manufacturing process Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
- B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B21/00—Tying-up; Shifting, towing, or pushing equipment; Anchoring
- B63B21/20—Adaptations of chains, ropes, hawsers, or the like, or of parts thereof
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B21/00—Tying-up; Shifting, towing, or pushing equipment; Anchoring
- B63B21/50—Anchoring arrangements or methods for special vessels, e.g. for floating drilling platforms or dredgers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B21/00—Tying-up; Shifting, towing, or pushing equipment; Anchoring
- B63B21/20—Adaptations of chains, ropes, hawsers, or the like, or of parts thereof
- B63B2021/203—Mooring cables or ropes, hawsers, or the like; Adaptations thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
- B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
- B63B2035/4433—Floating structures carrying electric power plants
- B63B2035/446—Floating structures carrying electric power plants for converting wind energy into electric energy
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- 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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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Wind Motors (AREA)
Abstract
The invention discloses a triangular omnibearing diagonal bracing V-shaped offshore wind power floating support foundation, wherein a floating support foundation (2) comprises a middle vertical floating body (2.1), a starboard end vertical floating body (2.2), a port end vertical floating body (2.3), a fan bottom supporting plate (2.4), a starboard connecting floating body (2.5), a port connecting floating body (2.6), a bottom diagonal bracing floating body (2.7), a starboard diagonal bracing floating body (2.8) and a port diagonal bracing floating body (2.9). The end vertical floating bodies of the floating support foundation are only connected with the middle vertical floating body to form a V-shaped structure, the design of two-by-two connection of a conventional deck and the vertical floating bodies is omitted, the steel consumption is saved, and the floating support foundation is convenient to construct. The triangular diagonal bracing structure is added at the weakest position of the structure, so that all weak points which can possibly generate fatigue damage can be comprehensively supported, and the structural safety and durability are obviously enhanced.
Description
Technical Field
The invention relates to the technical field of offshore wind power generation technology, in particular to a V-shaped offshore wind power floating support foundation with a triangular omnibearing diagonal brace.
Background
Wind energy is one of the fastest growing new energy sources in recent years as clean renewable energy. The sea wind is different from land wind, the sea wind is far greater than land wind, the sea wind is far away from people, no cultivated land is occupied, the development space is huge, the sea wind has the capability of playing a role of green renewable electric power master force, the sea wind is greatly developed, and the strategic value is huge. Offshore wind power has been rapidly developed in recent years around the world.
At present, offshore wind power projects mainly develop offshore wind power resources, and as the technology of offshore wind power develops, the technology of offshore wind power is advanced to deep open sea, which is a necessary trend of development. The foundations used in offshore areas are currently mainly fixed support foundations, but they have strict requirements on water depth. Along with the increase of the water depth, the dead weight and the engineering cost of the traditional fixed foundation are greatly increased, and the cost of the fixed foundation structure in a deep sea area is far and ultra-floating. The floating foundation breaks through the limitation of water depth, and the engineering cost is insensitive along with the increase of the water depth. In addition, floating wind power can lead the wind turbine generator to get rid of the constraint of different seabed conditions, standardize the design of the foundation and furthest reduce offshore operation; different from the traditional offshore wind turbine, the base is fixed on the seabed, and when the floating foundation needs to be maintained or avoids the wind, the fixed anchor cable can be easily released to return to the port, so that the offshore wind turbine has good maneuverability, and the repeated utilization and the repeated deployment are realized; compared with the traditional seabed fixed type offshore wind turbine, the floating type offshore wind turbine can be contacted with strong wind in deep ocean, so that the wind energy utilization rate is greatly improved. In summary, the floating foundation is expected to become the dominant type of the next generation of offshore wind power foundation.
The design concept of the offshore wind power floating foundation is mainly inherited from an offshore oil platform. Single column, semi-submersible and tension leg type are also being used by offshore wind floating foundations as the main types of offshore oil platforms in wide use. However, the biggest difference between the floating type wind power generation system and the floating type wind power generation system is that the petroleum profit is far higher than that of wind power, the floating type foundation directly applied to the petroleum platform is used for offshore wind power, the steel consumption of the foundation is often too large, and the cost is too high, which is one of main limiting factors for limiting the development of the offshore floating type wind power at present.
At present, the development of global floating type offshore wind power is well-established, a few projects have completed theoretical analysis and model test stages, enter a small-scale prototype operation stage, and even some of the projects have entered a commercialized project stage. While China has not yet started to build floating offshore wind power facilities. Therefore, in order to fully develop the wide ocean wind energy resources in the sea area of China and build the floating offshore wind power facilities suitable for the deep sea area, a novel offshore wind turbine floating foundation structure system with economy and safety needs to be provided.
Therefore, a structure is urgently needed to solve the above-mentioned problems.
Disclosure of Invention
The invention aims to overcome the defects of the background technology and provides a triangular omnibearing diagonal bracing V-shaped offshore wind power floating type supporting foundation.
The invention aims at realizing the technical scheme that the triangular omnibearing diagonal V-shaped offshore wind power floating support foundation comprises a wind turbine, a floating support foundation and mooring ropes.
The top of the floating support foundation is provided with a tower cylinder, the upper end of the tower cylinder is provided with a cabin, the front end of the cabin is provided with an impeller, the wind turbine consists of the impeller, the cabin and the tower cylinder, one side of the floating support foundation is fixed with the seabed through a mooring rope, and most of the floating support foundation is positioned below the still water.
The floating support foundation comprises a middle vertical floating body, a starboard end vertical floating body, a port end vertical floating body, a fan bottom supporting plate, a starboard connecting floating body, a port connecting floating body, a bottom diagonal bracing floating body, a starboard diagonal bracing floating body and a port diagonal bracing floating body.
The left side end vertical floating body and the right side end vertical floating body are positioned at the left end and the right end of the middle vertical floating body.
One end of the bottom of the middle vertical floating body is connected with the left side end vertical floating body through a left side connecting floating body, and the other end of the bottom of the middle vertical floating body is connected with the right side end vertical floating body through a right side connecting floating body.
One side of the middle vertical floating body is fixed with the port connecting floating body through the port diagonal bracing floating body, and the other side of the middle vertical floating body is fixed with the starboard connecting floating body through the starboard diagonal bracing floating body.
In the technical scheme, the method comprises the following steps: one side of the bottom diagonal bracing floating body is connected with the starboard connecting floating body, and the other side of the bottom diagonal bracing floating body is connected with the port connecting floating body.
In the technical scheme, the method comprises the following steps: the top of the middle vertical floating body is connected with a tower cylinder arranged above the middle vertical floating body through a support plate arranged at the bottom of the fan.
In the technical scheme, the method comprises the following steps: the connecting lines among the middle vertical floating body, the starboard end vertical floating body and the port end vertical floating body form triangles.
In the technical scheme, the method comprises the following steps: the included angle between the bottom inclined strut floating body and the starboard connecting floating body is the same as that between the port connecting floating body and the starboard connecting floating body.
In the technical scheme, the method comprises the following steps: the included angle between the starboard diagonal bracing floating body and the middle vertical floating body is the same as that between the starboard connecting floating bodies.
In the technical scheme, the method comprises the following steps: the included angle between the port diagonal bracing floating body and the middle vertical floating body is the same as that between the port connecting floating bodies.
The invention has the following advantages:
1. compared with the traditional floating foundation, the invention eliminates the upper deck of the floating support foundation; meanwhile, the end vertical floating bodies are connected with the middle vertical floating body only, but the end vertical floating bodies are not connected with each other. The invention has simpler overall structure, saves steel consumption, reduces cost and is easy to construct and manufacture.
2. Under the effect of periodic environmental load, the two positions with the largest stress are the two points which are most easy to generate fatigue damage, one is at the crossing position of the two connecting floating bodies, namely the vertex of the V shape, and the other is at the crossing position of the middle vertical floating body and the connecting floating body. According to the invention, the bottom inclined strut floating body is additionally arranged between the two connecting floating bodies, and the inclined strut floating body is additionally arranged between the connecting floating body and the middle vertical floating body, so that fatigue stress can be remarkably reduced, and fatigue damage is avoided.
3. The integral structure of the invention can comprehensively support all structural weak points which can generate fatigue failure, and remarkably enhance the structural safety and durability.
Drawings
FIG. 1 is a schematic view of a triangular omnibearing diagonal bracing V-shaped offshore wind power floating support foundation and a still water surface thereof.
FIG. 2 is a schematic diagram of a triangular omnibearing diagonal bracing V-shaped offshore wind power floating type supporting foundation.
Fig. 3 is a schematic view of a floating support foundation structure.
Fig. 4 is a schematic view of a floating support foundation structure with diagonal bracing removed.
In the figure: the wind turbine 1, the impeller 1.1, the engine room 1.2, the tower 1.3, the floating support foundation 2, the middle vertical floating body 2.1, the starboard end vertical floating body 2.2, the port end vertical floating body 2.3, the fan bottom support plate 2.4, the starboard connecting floating body 2.5, the port connecting floating body 2.6, the bottom diagonal bracing floating body 2.7, the starboard diagonal bracing floating body 2.8, the port diagonal bracing floating body 2.9, the mooring cable 3 and the still water surface 4.
Detailed Description
The following detailed description of the invention, taken in conjunction with the accompanying drawings, is not to be taken as limiting the invention, but merely as exemplifications, and makes it easier and more obvious to understand the advantages of the invention.
Referring to fig. 1-3: a triangular omnibearing diagonal bracing V-shaped offshore wind power floating foundation comprises a wind turbine 1, a floating support foundation 2 and mooring ropes 3. The still water surface 4 is located at the upper part of the floating support foundation 2.
The top of the floating support foundation 2 is provided with a tower 1.3, the upper end of the tower 1.3 is provided with a cabin 1.2, the front end of the cabin 1.2 is provided with an impeller 1.1, and the wind turbine 1 consists of the impeller 1.1, the cabin 1.2 and the tower 1.3.
One side of the floating support foundation 2 is fixed with the sea bottom through a mooring line 3, and most of the floating support foundation 2 is positioned below the still water surface 4.
The floating support foundation 2 comprises a middle vertical floating body 2.1, a starboard end vertical floating body 2.2, a port end vertical floating body 2.3, a fan bottom supporting plate 2.4, a starboard connecting floating body 2.5, a port connecting floating body 2.6, a bottom diagonal bracing floating body 2.7, a starboard diagonal bracing floating body 2.8 and a port diagonal bracing floating body 2.9.
The port end vertical floating body 2.3 and the starboard end vertical floating body 2.2 are positioned at the left end and the right end of the middle vertical floating body 2.1.
One end of the bottom of the middle vertical floating body 2.1 is connected with the port end vertical floating body 2.3 through a port connecting floating body 2.6, and the other end is connected with the starboard end vertical floating body 2.2 through a starboard connecting floating body 2.5.
One side in the middle of the middle vertical floating body 2.1 is fixed with the port connection floating body 2.6 through the port diagonal bracing floating body 2.9, and the other side is fixed with the starboard connection floating body 2.5 through the starboard diagonal bracing floating body 2.8.
One side of the bottom inclined strut floating body 2.7 is connected with the starboard connecting floating body 2.5, and the other side is connected with the port connecting floating body 2.6. The bottom inclined strut floating body is additionally arranged, and meanwhile, the port inclined strut floating body and the starboard inclined strut floating body are additionally arranged between the connecting floating body and the middle vertical floating body, so that fatigue stress can be remarkably reduced, and fatigue damage is avoided.
The top of the middle vertical floating body 2.1 is connected with a tower 1.3 arranged above through a support plate 2.4 arranged at the bottom of the fan. Through installing fan bottom support board 2.4, overall structure is more firm.
The connecting lines among the middle vertical floating body 2.1, the starboard end vertical floating body 2.2 and the port end vertical floating body 2.3 form triangles.
After the starboard end vertical floating body 2.2 and the port end vertical floating body 2.3 bear hydrodynamic load in the vertical direction, larger bending moment can be generated at the joint of the starboard connecting floating body 2.5 and the middle vertical floating body 2.1 and the joint of the port connecting floating body 2.6 and the middle vertical floating body 2.1, and fatigue damage is easy to generate at the joint of the starboard connecting floating body 2.5 and the port connecting floating body 2.6 and the middle vertical floating body 2.1 in consideration of the high-frequency periodicity of waves;
meanwhile, after the starboard end vertical floating body 2.2 and the port end vertical floating body 2.3 bear hydrodynamic load in the horizontal direction, a large bending moment is generated at the intersection of the starboard connecting floating body 2.5 and the port connecting floating body 2.6, and fatigue damage is also easy to occur at the intersection of the starboard connecting floating body 2.5 and the port connecting floating body 2.6 under the action of wave high frequency. The triangular diagonal bracing structure formed by the bottom diagonal bracing floating body 2.7, the starboard diagonal bracing floating body 2.8 and the port diagonal bracing floating body 2.9 can comprehensively support all structural weak points which possibly generate fatigue damage, and the structural safety and durability are obviously enhanced.
The all vertical floats and all connecting floats form a V-shaped float form as shown in fig. 4.
According to the invention, the bottom diagonal bracing floating body is additionally arranged at the position, and the port diagonal bracing floating body and the starboard diagonal bracing floating body are additionally arranged between the connecting floating body and the middle vertical floating body, so that fatigue stress can be remarkably reduced, and fatigue damage can be avoided.
The included angles between the bottom inclined strut floating body 2.7 and the starboard connecting floating body 2.5 and between the bottom inclined strut floating body 2.7 and the port connecting floating body 2.6 are the same. The diagonal bracing is formed on the starboard connecting floating body 2.5 and the port connecting floating body 2.6, so that bending moment between the starboard connecting floating body 2.5 and the port connecting floating body 2.6 can be effectively reduced, fatigue stress at the joint of the starboard connecting floating body 2.5 and the port connecting floating body 2.6 is obviously reduced, and fatigue damage is avoided.
The included angles between the starboard diagonal bracing floating body 2.8 and the middle vertical floating body 2.1 are the same as those between the starboard diagonal bracing floating body 2.8 and the starboard connecting floating body 2.5. The bending moment between the middle vertical floating body 2.1 and the starboard connecting floating body 2.5 can be effectively reduced, the fatigue stress at the joint of the middle vertical floating body 2.1 and the starboard connecting floating body 2.5 is obviously reduced, and fatigue damage is avoided.
The included angles between the port diagonal bracing floating body 2.9 and the middle vertical floating body 2.1 are the same as those between the port diagonal bracing floating body 2.9 and the port connecting floating body 2.6. The port connection floating body 2.6 and the middle vertical floating body 2.1 form an inclined strut, so that bending moment between the middle vertical floating body 2.1 and the port connection floating body 2.6 can be effectively reduced, fatigue stress at the joint of the middle vertical floating body 2.1 and the port connection floating body 2.6 is obviously reduced, and fatigue damage is avoided.
The parts not described in detail above are all prior art.
Claims (7)
1. A triangular omnibearing diagonal bracing V-shaped offshore wind power floating support foundation comprises a wind turbine (1), a floating support foundation (2) and a mooring cable (3),
the top of the floating support foundation (2) is provided with a tower cylinder (1.3), the upper end of the tower cylinder (1.3) is provided with a cabin (1.2), the front end of the cabin (1.2) is provided with an impeller (1.1), the wind turbine (1) comprises the impeller (1.1), the cabin (1.2) and the tower cylinder (1.3),
one side of the floating support foundation (2) is fixed with the sea bottom through a mooring rope (3), and part of the floating support foundation (2) is positioned below the still water surface (4),
the method is characterized in that: the floating support foundation (2) comprises a middle vertical floating body (2.1), a starboard end vertical floating body (2.2), a port end vertical floating body (2.3), a fan bottom supporting plate (2.4), a starboard connecting floating body (2.5), a port connecting floating body (2.6), a bottom diagonal bracing floating body (2.7), a starboard diagonal bracing floating body (2.8) and a port diagonal bracing floating body (2.9);
the port end vertical floating body (2.3) and the starboard end vertical floating body (2.2) are positioned at the left end and the right end of the middle vertical floating body (2.1),
one end of the bottom of the middle vertical floating body (2.1) is connected with the port end vertical floating body (2.3) through a port connecting floating body (2.6), the other end is connected with the starboard end vertical floating body (2.2) through a starboard connecting floating body (2.5),
one side in the middle of the middle vertical floating body (2.1) is fixed with the port connection floating body (2.6) through the port diagonal bracing floating body (2.9), and the other side is fixed with the starboard connection floating body (2.5) through the starboard diagonal bracing floating body (2.8).
2. The triangular omnibearing diagonal bracing V-shaped offshore wind power floating support foundation according to claim 1, wherein: one side of the bottom inclined strut floating body (2.7) is connected with the starboard connecting floating body (2.5), and the other side is connected with the port connecting floating body (2.6).
3. The triangular omnibearing diagonal bracing V-shaped offshore wind power floating foundation according to claim 1, wherein: the top of the middle vertical floating body (2.1) is connected with a tower (1.3) arranged above through a support plate (2.4) arranged at the bottom of the fan.
4. A triangular omnibearing diagonal bracing V-shaped offshore wind power floating support foundation according to claim 3, wherein: the connecting lines among the middle vertical floating body (2.1), the starboard end vertical floating body (2.2) and the port end vertical floating body (2.3) form triangles.
5. The triangular omnibearing diagonal bracing V-shaped offshore wind power floating support foundation according to claim 4, wherein: the included angles between the bottom inclined strut floating body (2.7) and the starboard connecting floating body (2.5) are the same as the included angles between the bottom inclined strut floating body (2.7) and the port connecting floating body (2.6).
6. The triangular omnibearing diagonal bracing V-shaped offshore wind power floating support foundation according to claim 5, wherein: the included angles between the starboard diagonal bracing floating body (2.8) and the middle vertical floating body (2.1) are the same as those between the starboard diagonal bracing floating body (2.8) and the starboard connecting floating body (2.5).
7. The triangular omnibearing diagonal bracing V-shaped offshore wind power floating foundation according to claim 6, wherein: the included angles between the port diagonal bracing floating body (2.9) and the middle vertical floating body (2.1) are the same as those between the port diagonal bracing floating body (2.9) and the port connecting floating body (2.6).
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| CN202310175770.9A CN116062107A (en) | 2023-02-28 | 2023-02-28 | V-shaped offshore wind power floating type supporting foundation with triangular omnibearing diagonal braces |
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| CN202310175770.9A CN116062107A (en) | 2023-02-28 | 2023-02-28 | V-shaped offshore wind power floating type supporting foundation with triangular omnibearing diagonal braces |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN210592353U (en) * | 2019-09-09 | 2020-05-22 | 上海交通大学 | Novel floating foundation of multi-buoy offshore wind turbine |
| CN112127384A (en) * | 2020-09-30 | 2020-12-25 | 长江勘测规划设计研究有限责任公司 | Suspension pressure-loading type floating foundation structure of offshore wind turbine |
| CN113734369A (en) * | 2021-10-12 | 2021-12-03 | 重庆大学 | Semi-submersible type steel-concrete floating type fan foundation |
| WO2022052369A1 (en) * | 2020-09-08 | 2022-03-17 | 上海交通大学 | Cylindrical floating fan platform provided with moon pool |
| WO2023284671A1 (en) * | 2021-07-12 | 2023-01-19 | 中国华能集团清洁能源技术研究院有限公司 | Semi-submersible floating fan device and system |
-
2023
- 2023-02-28 CN CN202310175770.9A patent/CN116062107A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN210592353U (en) * | 2019-09-09 | 2020-05-22 | 上海交通大学 | Novel floating foundation of multi-buoy offshore wind turbine |
| WO2022052369A1 (en) * | 2020-09-08 | 2022-03-17 | 上海交通大学 | Cylindrical floating fan platform provided with moon pool |
| CN112127384A (en) * | 2020-09-30 | 2020-12-25 | 长江勘测规划设计研究有限责任公司 | Suspension pressure-loading type floating foundation structure of offshore wind turbine |
| WO2023284671A1 (en) * | 2021-07-12 | 2023-01-19 | 中国华能集团清洁能源技术研究院有限公司 | Semi-submersible floating fan device and system |
| CN113734369A (en) * | 2021-10-12 | 2021-12-03 | 重庆大学 | Semi-submersible type steel-concrete floating type fan foundation |
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