CN217870596U - Tensioning type fan foundation anchored on foundation seabed - Google Patents
Tensioning type fan foundation anchored on foundation seabed Download PDFInfo
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- CN217870596U CN217870596U CN202221225057.8U CN202221225057U CN217870596U CN 217870596 U CN217870596 U CN 217870596U CN 202221225057 U CN202221225057 U CN 202221225057U CN 217870596 U CN217870596 U CN 217870596U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/727—Offshore wind turbines
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Abstract
The utility model provides a tensioning type fan foundation anchored on a rock foundation seabed, which comprises an anchoring system, an anchoring cable, a semi-submersible module, a fan tower drum and a wind turbine; the upper end of the anchoring system is connected with an anchoring cable, and the lower end of the anchoring system is anchored on the seabed; the upper end of the mooring cable is connected with a semi-submersible module; the semi-submersible module is used for adjusting the buoyancy of the semi-submersible module to pre-tension the mooring cable; and the top of the semi-submersible module is sequentially provided with a fan tower cylinder and a wind turbine generator arranged at the top of the fan tower cylinder. The utility model provides an anchor is for partly complying with semi-rigidity in the tensioning formula fan foundation structure of foundation seabed, buoyancy and dead weight, anchor chain pretension reach the balance, and great pretension makes foundation structure roll, pitch and hang down and swing the range of motion less, and fan tower section of thick bamboo keeps the vertical state almost under the normal operating mode, has improved the generating efficiency, has reduced dynamic cable length to can dispose more powerful wind turbine generator system on this basis.
Description
Technical Field
The utility model belongs to the technical field of offshore wind power generation, especially, relate to a tensioning formula fan basis of anchor in rock-based seabed.
Background
Wind power generation is the fastest-developing green energy technology in the world, and due to abundant wind energy resources on the sea and the feasibility of the current technology, the sea becomes a rapidly-developing wind power market. The development and utilization of offshore wind power draw great attention worldwide, and great progress is made in development technology.
With the planning and development of offshore wind power in China, pile foundations are generally adopted as supporting structures in offshore sea areas, and the deep sea areas lack economic foundation forms. At present, aiming at a rock-based seabed, an offshore wind power structure mainly adopts a gravity type foundation and a fixed socketed pile foundation. The gravity type foundation is large in size and weight, needs a large crane, has high requirements for the flatness of the seabed surface of a rock foundation, often needs to be leveled and preprocessed before the gravity type foundation is installed, is complex in construction process, low in efficiency and cannot be applied to a deepwater environment. The fixed rock-socketed pile foundation is constructed by using mechanical equipment such as a large crane ship, a drilling machine and a piling machine, a construction process of 'driving-drilling-driving' is often adopted for multiple times, the perpendicularity and the bearing capacity of a pile body are repeatedly measured in the pile sinking process, grouting reinforcement is carried out on the pile side, the construction process is various, the difficulty is high, the offshore construction time consumption is long, the cost is high, the deep and offshore environment conditions are severe, the applicability of the fixed rock-socketed pile foundation is poor, and the construction and construction cost is greatly increased.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an anchor in tensioning formula fan basis of rock-based seabed to the not enough of existence among the prior art.
For this reason, the above-mentioned purpose of the present invention is achieved by the following technical solutions:
the utility model provides a tensioning formula fan basis of anchoring in rock-based seabed which characterized in that: the tension type fan foundation anchored on the rock foundation seabed comprises a rock foundation anchoring system, an anchoring cable, a semi-submersible type module, a fan tower barrel and a wind turbine generator;
the upper end of the rock foundation anchoring system is connected with an anchoring cable, and the lower end of the anchoring system is anchored on a rock foundation seabed;
the mooring cable is of a tensioning structure, and the upper end of the mooring cable is connected with the semi-submersible module;
the semi-submersible module is used for adjusting the buoyancy of the semi-submersible module to pre-tension the mooring cable in the installation process;
the top of the semi-submersible module is sequentially provided with a fan tower and a wind turbine generator arranged at the top of the fan tower;
the anchoring system comprises an anchoring panel and a plurality of anchor rods, the plurality of anchor rods form a micro pile array, the anchoring panel is fixed to the top of the micro pile array formed by the plurality of anchor rods, and the lower ends of the anchor rods are inserted into seabed rock bodies and connected in a grouting mode.
When adopting above-mentioned technical scheme, the utility model discloses can also adopt or make up and adopt following technical scheme:
as a preferred technical scheme of the utility model: and the lower end of the anchor rod and the seabed rock mass are anchored through grouting.
As a preferred technical scheme of the utility model: and an anchor eye is arranged in the center of the anchoring panel and is used for connecting an anchoring cable.
As a preferred technical solution of the present invention: the semi-submersible module sequentially comprises four ballast tanks, a middle vertical buoy, an upper transition section and a connecting flange from bottom to top;
the inner end of the ballast tank is connected to the bottom of the middle vertical buoy, the outer end of the ballast tank is provided with a cable guide hole for connecting an anchoring cable, and a ballast pump is arranged in the ballast tank and used for injecting water or draining water to adjust buoyancy;
a platform is arranged in the middle vertical pontoon to arrange related equipment of the wind turbine generator, and the upper end of the middle vertical pontoon is welded with the bottom of the upper transition section;
and the top of the upper transition section is provided with a connecting flange which is connected with a flange plate at the bottom of the fan tower cylinder.
As a preferred technical solution of the present invention: and berthing facilities are also arranged on the lateral sides of the semi-submersible module.
As a preferred technical solution of the present invention: and a reinforcing plate and a ribbed plate are arranged in the middle vertical buoy.
As a preferred technical scheme of the utility model: the upper transition section is a steel truss to reduce the steel consumption and the environmental load.
As a preferred technical solution of the present invention: the wind turbine tower cylinder is composed of a plurality of sections of tower cylinders, the upper tower cylinder and the lower tower cylinder are connected through flange plates, and the top end of the wind turbine tower cylinder is connected with the wind turbine generator through the flange plates.
As a preferred technical solution of the present invention: the wind turbine generator comprises a cabin, a hub and blades.
The utility model provides an anchor in tensioning formula fan basis of batholith sea bed is applicable to the offshore wind power development under the shallower seabed geological conditions of batholith sea bed and bedrock buried depth, compares with prior art, has following beneficial effect:
1) The utility model discloses broken through the restriction that traditional fan basis can't be applied to the rock base seabed, marine environment, geological conditions and large-scale wind turbine generator system of adaptable difference.
2) The utility model provides an anchoring system simple structure only needs to utilize traditional geology reconnaissance rig to carry out minor diameter drilling at the rock base sea bed to carry the pipe by underwater robot and carry out the grout and connect, the work progress is simple and convenient, greatly reduced anchoring system installs's risk and cost.
3) The utility model discloses the mooring line can carry out perpendicular pretension through semi-submerged formula module under operating condition, and is stronger to floating foundation's displacement limiting capacity, and mooring line length is short, it is little to occupy the sea area, has better economic nature.
4) The utility model discloses foundation structure is for partly complying with half rigidity, and buoyancy and dead weight, anchor chain pretension reach the balance, and great pretension makes foundation structure roll, pitch and hang down and swing the range of motion less, and the fan tower section of thick bamboo keeps the vertical state almost under the normal operating mode, has improved the generating efficiency, has reduced dynamic cable length to can dispose more powerful wind turbine generator system on this basis, the economic nature is superior to general floating fan basis.
5) The utility model discloses semi-submerged formula modular structure is simple, easily builds, can prefabricate on the land and assemble to with anchor mooring cable, fan tower section of thick bamboo and fan set towing transportation after the whole equipment on the land, need not to transfer large-scale crane ship and expensive transport ship.
6) The utility model discloses can utilize underwater robot and semi-submerged formula module adjustment ballast water to realize the pretension of one-step installation and mooring cable, need not to dispatch hoist and mount ship machine equipment, reduce marine installation procedure, reduce the marine construction risk, shorten marine construction time, practice thrift engineering cost.
7) The utility model discloses an usable construction window of floating foundation is long, can be used to the rock-based seabed and other types seabed, has better hydrodynamic force performance simultaneously, and the applicable depth of water scope is wide, can guarantee the motion stability at the wind direction of difference and unrestrained downward homoenergetic, promotes the generating efficiency, has good economic benefits, is particularly useful for deep sea wind power plant.
Drawings
Fig. 1 is a perspective view of the tension type wind turbine foundation anchored on the foundation seabed.
Fig. 2 is a bolt installation illustration.
Fig. 3 is a perspective view of a semi-submersible module.
Fig. 4 is a vertical cross-sectional view of the semi-submersible module.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1, the tension type wind turbine foundation anchored on the foundation seabed comprises an anchoring system 1, an anchoring cable 2, a semi-submersible module 3, a wind turbine tower 4 and a wind turbine generator 5.
As shown in fig. 1 and 2, the foundation includes four sets of anchoring systems 1, each anchoring system 1 includes anchor rods 11 and anchoring panels 12, the anchor rods 11 are inserted into the seabed for drilling and then grouted, the anchor rods 11 form a micro pile array, anchor bolt holes are preset through two sides of the anchoring panels 12, and the anchoring panels 12 are sleeved on the anchor rods 11 to form the micro pile array and fixed by anchor bolt nuts. The center of the anchoring panel 12 is provided with an anchor eye for connecting the anchoring line 2. The axial directions of two adjacent sets of anchoring systems are mutually vertical.
As shown in fig. 1, mooring lines 2 are connected at their lower ends to the mooring eye of the mooring system and at their upper ends to the fairlead of the semi-submersible module 3. After the foundation is assembled and in a static state, the anchoring cable is in a vertical state, and the buoyancy of the foundation, the gravity of the foundation and the pretension of the anchoring cable are in a balanced state.
As shown in fig. 1, 3 and 4, the semi-submersible module 3 comprises four lower ballast tanks 31, a middle vertical pontoon 32, an upper transition section 33, a connecting flange 34, a mooring facility 35. Two adjacent ballast tanks 31 are identical in size and perpendicular to each other, a fairlead 36 is arranged at the end of each ballast tank 31 and used for connecting the upper end of the mooring cable 2, and a ballast pump 37 is arranged in each ballast tank 31 and used for water injection and drainage. The four ballast tanks 31 are connected with the vertical buoys 32 in a welding mode, the vertical buoys 32 are cylinders with equal diameters, inner platforms are arranged inside the vertical buoys, and related equipment of the wind turbine generator is arranged. The vertical pontoons 32 are welded at their upper ends to the transition sections 33 and are internally provided with reinforcing plates 38 and ribs 39 to provide sufficient structural strength. The transition section 33 is of a truss structure so as to reduce the steel amount for the structure, and a seal plate and a connecting flange 34 are welded at the upper end of the transition section 33 and connected with a flange plate at the bottom of the fan tower 4.
The fan tower cylinder 4 is composed of a plurality of tower cylinders, adjacent tower sections are connected through a flange plate, and the top end of the fan tower cylinder 4 is connected with the wind turbine generator 5 through the flange plate. The wind turbine 5 includes a nacelle 51, a hub 52, and blades 53.
The tension type fan foundation anchored on the rock foundation seabed is realized by the following arrangement method:
the first step is as follows: and drilling a small-diameter drill hole slightly larger than the size of the anchor rod 11 on the rock-based seabed by using an underwater drilling machine or a traditional geological drilling machine at the position of the fan position, wherein the drill hole is deep to a bearing layer to meet the bearing capacity requirement, and the arrangement positions of the drill holes correspond to the anchor bolt holes preset in the anchor panel 12 one by one. If the height span of the bedrock at the anchoring system is large, the bedrock leveling operation can be performed before drilling or during grouting after drilling.
The second step: drilling depth and 11 length one-to-one of stock, after drilling to appointed degree of depth, with the basement rock piece in the drilling and residue clean up, reuse underwater robot with the stock 11 insert drilling to the bottom one by one, adjust the stock straightness that hangs down to utilize underwater robot guide grout pipe to insert has the drilling bottom, inject into high-strength high-density grout and promote the pipe gradually simultaneously and until the basement rock surface, guarantee the closely knit seamless of grout.
The third step: after grouting consolidation, the anchor panel 12 is installed using an underwater robot. The micropile array of anchor rods 11 is passed through preformed anchor bolt holes in the surface of the anchor panel 12 and secured with anchor bolt nuts. The step is completely operated on the surface of the underwater sea bed, is hardly influenced by environmental conditions such as wind, waves and current, and has long available construction window period.
The fourth step: after the anchoring panel 12 is installed, the underwater robot is used for towing the lower end of the anchoring cable and fixing the lower end of the anchoring cable at the position of an anchor eye of the anchoring panel, and the upper end of the towed anchoring cable is connected with a buoy located on the sea surface. The buoy is a temporary facility and is used for towing the mooring cable to the sea surface, on one hand, the mooring cable 2 is protected from being damaged by touching the bottom, and on the other hand, after the semi-submersible module 3 is in place, the mooring cable is conveniently found and the fixing work of the upper end of the mooring cable 2 is conveniently carried out.
The fifth step: high-density concrete is injected into the bottoms of the four ballast tanks 31 of the semi-submersible module 3 to serve as fixed ballast so as to reduce the integral gravity center of the structure, increase the draft and improve the structural stability. And integrally assembling and outfitting the fan tower cylinder 4 and the wind generating set 5 with the semi-submersible module 3 at a wharf or a dock, injecting water into the wharf or the dock to enable the foundation structure to naturally float, and towing the foundation structure to a position of a construction fan position. Large-scale crane ships and expensive transport ships are not required to be called, and engineering cost is saved.
And a sixth step: one-step installation of the infrastructure is achieved. After the foundation structure is transported to the construction site, a ballast pump located inside the ballast tank 31 is opened to suck ballast water, and the foundation draft is increased. Under the deep draft state of foundation, select the low tide level period in the construction window period, carry out the marine one-step installation of foundation: and (3) the underwater robot is used for penetrating the mooring cable 2 on the buoy through a guide cable hole at the end part of the ballast tank 31 and further dragging the mooring cable to the upper part of the semi-submersible module for connection, after all the mooring cables are connected, the mooring cable naturally rises along with the water level, and ballast water is discharged by adjusting a ballast pump arranged in the semi-submersible module 3 to reduce the base draught, so that the natural tensioning of the mooring cable is realized, and the buoyancy, the base gravity and the mooring tension are in a balanced state. The whole process has simple and convenient installation steps, and does not need to call a large hoisting vessel and an anchor machine to winch and pull to apply pretension.
The above embodiments are merely preferred technical solutions of the present invention, and it should be understood by those skilled in the art that modifications or substitutions of technical solutions or parameters in the embodiments can be made without departing from the principles and essential conditions of the present invention, and all the modifications or substitutions should be covered within the protection scope of the present invention.
Claims (9)
1. The utility model provides a tensioning formula fan basis of anchoring in rock-based seabed which characterized in that: the tension type fan foundation anchored on the rock-based seabed comprises a rock-based anchoring system, an anchoring cable, a semi-submersible module, a fan tower and a wind turbine;
the upper end of the foundation anchoring system is connected with an anchoring cable, and the lower end of the anchoring system is anchored on the foundation seabed;
the mooring cable is of a tensioning structure, and the upper end of the mooring cable is connected with the semi-submersible module;
the semi-submersible module is used for adjusting the buoyancy of the semi-submersible module to pre-tension the mooring cable in the installation process;
the top of the semi-submersible module is sequentially provided with a fan tower cylinder and a wind turbine generator arranged at the top of the fan tower cylinder;
the anchoring system comprises an anchoring panel and a plurality of anchor rods, wherein the plurality of anchor rods form a micro pile array, the top of the micro pile array formed by the anchoring panel and the plurality of anchor rods is fixed, and the lower end of each anchor rod is inserted into a seabed rock mass and is connected with grouting.
2. The tension type wind turbine foundation anchored to a foundation seabed as claimed in claim 1, wherein: and the lower end of the anchor rod and the seabed rock mass are anchored through grouting.
3. The tension type wind turbine foundation anchored to a foundation seabed as claimed in claim 1, wherein: and an anchor eye is arranged in the center of the anchoring panel and is used for connecting anchoring cables.
4. The tension type wind turbine foundation anchored to a foundation and a seabed as claimed in claim 1, wherein: the semi-submersible module sequentially comprises four ballast tanks, a middle vertical buoy, an upper transition section and a connecting flange from bottom to top;
the inner end of the ballast tank is connected to the bottom of the middle vertical buoy, the outer end of the ballast tank is provided with a cable guide hole for connecting an anchoring cable, and a ballast pump is arranged in the ballast tank and used for water injection or drainage;
a platform is arranged in the middle vertical pontoon to arrange related equipment of the wind turbine generator, and the upper end of the middle vertical pontoon is welded with the bottom of the upper transition section;
and the top of the upper transition section is provided with a connecting flange which is connected with a flange plate at the bottom of the fan tower cylinder.
5. The tension type wind turbine foundation anchored to the foundation and seabed as claimed in claim 4, wherein: and berthing facilities are also arranged on the lateral sides of the semi-submersible modules.
6. The tension type wind turbine foundation anchored to the foundation and seabed as claimed in claim 4, wherein: and a reinforcing plate and a ribbed plate are arranged in the middle vertical buoy.
7. The tension type wind turbine foundation anchored to the foundation and seabed as claimed in claim 4, wherein: the upper transition section is a steel truss to reduce steel consumption and environmental load.
8. The tension type wind turbine foundation anchored to a foundation seabed as claimed in claim 1, wherein: the wind turbine tower cylinder is composed of a plurality of sections of tower cylinders, the upper tower cylinder and the lower tower cylinder are connected through flange plates, and the top end of the wind turbine tower cylinder is connected with the wind turbine generator through the flange plates.
9. The tension type wind turbine foundation anchored to a foundation seabed as claimed in claim 1, wherein: the wind turbine generator comprises a cabin, a hub and blades.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221225057.8U CN217870596U (en) | 2022-05-20 | 2022-05-20 | Tensioning type fan foundation anchored on foundation seabed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221225057.8U CN217870596U (en) | 2022-05-20 | 2022-05-20 | Tensioning type fan foundation anchored on foundation seabed |
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| CN217870596U true CN217870596U (en) | 2022-11-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202221225057.8U Active CN217870596U (en) | 2022-05-20 | 2022-05-20 | Tensioning type fan foundation anchored on foundation seabed |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114855865A (en) * | 2022-05-20 | 2022-08-05 | 中国电建集团华东勘测设计研究院有限公司 | Tensioning type fan foundation anchored on rock-based seabed and arrangement method |
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2022
- 2022-05-20 CN CN202221225057.8U patent/CN217870596U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114855865A (en) * | 2022-05-20 | 2022-08-05 | 中国电建集团华东勘测设计研究院有限公司 | Tensioning type fan foundation anchored on rock-based seabed and arrangement method |
| CN114855865B (en) * | 2022-05-20 | 2024-03-29 | 中国电建集团华东勘测设计研究院有限公司 | Tensioning type fan foundation anchored on rock-based seabed and arrangement method |
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