CN107792307B - Floating wind power tower convenient to installation - Google Patents
Floating wind power tower convenient to installation Download PDFInfo
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- CN107792307B CN107792307B CN201711193518.1A CN201711193518A CN107792307B CN 107792307 B CN107792307 B CN 107792307B CN 201711193518 A CN201711193518 A CN 201711193518A CN 107792307 B CN107792307 B CN 107792307B
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- 238000007667 floating Methods 0.000 title claims abstract description 80
- 238000009434 installation Methods 0.000 title claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 25
- 239000013535 sea water Substances 0.000 claims description 16
- 238000005086 pumping Methods 0.000 claims description 14
- 239000004570 mortar (masonry) Substances 0.000 claims description 13
- 239000007788 liquid Substances 0.000 claims description 9
- 230000005484 gravity Effects 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 238000011900 installation process Methods 0.000 claims description 5
- 230000036961 partial effect Effects 0.000 claims description 5
- 239000002689 soil Substances 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 4
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 7
- 238000010248 power generation Methods 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000011161 development Methods 0.000 description 5
- 230000033001 locomotion Effects 0.000 description 4
- 238000004873 anchoring Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000002860 competitive effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
Classifications
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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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- 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
Abstract
The invention belongs to the technical field of wind power generation, and particularly relates to a floating wind power tower convenient to install, which comprises a suction pile, a fixed ballast tank, a truss, an adjustable buoyancy tank and a fixed buoyancy tank which are sequentially and fixedly connected from bottom to top; the adjustable buoyancy cabin and the fixed buoyancy cabin are annular cabins and are concentrically arranged, and a cylindrical floating core is in clearance fit in an internal channel surrounded by the truss, the adjustable buoyancy cabin and the fixed buoyancy cabin; the cylindrical floating core is provided with a wind generating set through a fan tower; the locking device is arranged at the opening of the floating core channel and used for locking the fan tower base. The beneficial effects of the invention are as follows: the tower body is wet towed to the site, no assistance of a jacket launching barge is needed, and the transportation and the installation are convenient and safe; the tower body can be automatically righted without the cooperation of large floating cranes; the floating wind power tower depends on the restoration rigidity provided by the floating wind power tower, so that equipment such as a mooring system and the like are not required to be arranged, a large crane ship is not required to be required, the structure is simplified, and the construction cost of a wind power plant is reduced.
Description
Technical Field
The invention belongs to the technical field of wind power generation, and particularly relates to a floating wind power tower convenient to install.
Background
The offshore wind energy resource is rich, the wind energy quality is good, the average wind power density is high, and the accumulated effective wind energy is high in hours. Offshore wind power development has become a new battlefield for global renewable energy development. Offshore wind power technology has also undergone development from the intertidal zone, offshore, deep sea. In particular to the sea area with the water depth of more than 50m, the wind speed is stable, the wind cut is small, the range is wide, the continuous reliability of wind power generation is facilitated, and the large-scale installation is a hot spot for future offshore wind power application.
Currently, the wind power foundation structure type of the intertidal zone and the shallow sea area generally adopts a fixed structure such as a single pile foundation, a multi-pile conduit frame foundation and a gravity foundation. With the development of offshore wind farms continuously developing into deep sea, fixed wind towers have no technical advantage, and floating wind tower structures are a more ideal choice.
Existing floating wind tower structures have evolved primarily from floating ocean platform structures such as Spar, tension legs, semi-submersible platforms, and the like. The working environment of the deep sea area is worse than that of the shallow sea area. Moreover, the single fan in the deep sea area has high single power, long blades and higher action points of wind load, and if the wind power tower is greatly swayed due to improper design, the aerodynamic effect of the balance of the blades can be changed, so that the wind energy conversion efficiency of the wind power generation set is reduced. Therefore, the structure of the deep water floating wind power tower is more complex than that of the wind power tower in the shallow water sea. However, the wind power market is a highly price sensitive market. Regulations in the electric market require that wind prices still have a competitive advantage after governments exit price subsidies. Therefore, the control and reduction of the construction cost of floating wind power become the first major matters related to the future development of wind power technology, and new schemes in various forms are also continuously emerging.
European patent document EP2606228B1 Offshore wind turbine and methods of installing same provides a truss type ocean wind power tower solution. The scheme comprises the following steps: truss-like suction tower, floating core structure, install fan, fan blade, mooring system in floating core upper end. A ballast soft tank counterweight is arranged below the truss type suction tower. During installation, the truss type suction tower is separated from the transport ship, and ballasts are filled through the cooperation of the crane, so that the truss is wholly righted. Subsequently, a spread mooring system is installed, limiting lateral platform movement. And (3) inflating the floating core, discharging seawater from a sea port at the lower part, increasing buoyancy, lifting the floating core in the truss tower, and lifting the fan to the designed height, wherein a locking device in the truss tower locks the floating core.
However, this solution still has drawbacks. The truss is free of buoyancy cabins, the truss needs to be transported in a dry towing mode, the truss is separated from a transport ship to be launched in a mode similar to that of a jacket, and safety risk is high in the installation process. At this time, large-scale floating cranes are needed to be matched to right and finish the installation of the base. When subjected to external environmental loads such as wind, wave and current loads, the truss itself cannot provide a restoring force, but can only rely on the mooring system to provide restoring rigidity. The mooring system in turn requires the deployment of tensioning equipment. In a word, the installation of truss type wind power tower needs to solicit large-scale marine crane ships, and the arrangement of mooring system, the installation of anchoring suction pile and the tensioning of cable all lead to the complicacy of system design and installation process, and then influence wind power plant construction cost.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a tower body which is wet towed to the site without the assistance of a jacket launch barge, and is convenient and safe to transport and install; the tower body can be automatically righted without the cooperation of large floating cranes; the floating wind power tower depends on the restoration rigidity provided by the floating wind power tower, so that equipment such as a mooring system and the like are not required to be arranged, a large crane ship is not required to be required, the structure is simplified, and the construction cost of a wind power plant is reduced.
The technical scheme adopted for solving the technical problems is as follows: a floating wind power tower convenient to install comprises a suction pile, a fixed ballast tank, a truss, an adjustable buoyancy tank and a fixed buoyancy tank which are fixedly connected in sequence from bottom to top, wherein the suction pile is of a cylindrical structure with a closed upper end and an open lower end; the fixed ballast tank is communicated with a mortar pumping pipe, and the top of the fixed ballast tank is provided with a first sea port; the bottom of the adjustable buoyancy cabin is provided with a third sea port, the adjustable buoyancy cabin is communicated with a first compressed air pipe, and an air outlet of the first compressed air pipe is positioned above the third sea port; the fixed buoyancy cabin is a totally-enclosed hollow cabin; the adjustable buoyancy cabin and the fixed buoyancy cabin are annular cabins and are concentrically arranged, a cylindrical floating core is in clearance fit in an internal channel surrounded by the truss, the adjustable buoyancy cabin and the fixed buoyancy cabin, the cylindrical floating core is communicated with a second compressed air pipe, a second sea opening is arranged at the lower end of the cylindrical floating core, and an air outlet of the second compressed air pipe is positioned above the second sea opening; the top end of the cylindrical floating core is provided with a wind generating set through a fan tower, and the wind generating set is positioned outside the opening of the floating core channel; the open of the floating core channel is provided with a locking device which is used for locking the fan tower base after the cylindrical floating core in water floats upwards.
The first sea opening, the second sea opening and the third sea opening are closed, partial sea water is filled in the cylindrical floating core, the interiors of the fixed ballast tank and the adjustable buoyancy tank are hollow, the tower body can horizontally float on the water surface, the tugboat is wet towed to the site, and the wind generating set is not installed on the tower body.
And then, opening the first sea opening and the third sea opening, filling the fixed ballast tank and the adjustable buoyancy tank with water, and realizing self-erection and righting of the tower body. After the tower body is erected, the crushed iron ore mortar is pumped in through a mortar pumping pipe, so that the seawater in the fixed ballast tank is discharged from the first sea valve above, the fixed ballast tank is pressurized, the whole gravity center of the tower body is adjusted to be below the floating center, and the tower body is in a stable balance state.
Then, a fan and blades of the wind generating set are arranged at the top end of the fan tower positioned on the water surface.
Then, air is pumped into the first compressed air pipe, and the compressed air forces the seawater to be discharged from the third sea port below due to the fact that the air density is smaller than the seawater density, so that the liquid level is lowered, and the buoyancy of the tower body is increased; the liquid level in the adjustable buoyancy cabin is reduced through the first compressed air pipe, the buoyancy of the tower body is increased, the lifting of the fan tower in the installation process is realized, and when the fan tower moves to an operation site, the liquid level in the adjustable buoyancy cabin is lifted through the first compressed air pipe, so that the whole tower body is sunk, the suction pile is inserted into the seabed by means of self gravity, soil in the insertion process enters the pile to naturally extrude water in the pile, and finally the tower body is installed on the seabed.
Then, a second sea opening is opened, a second compressed air pipe is filled with air, sea water is discharged through the second sea opening, the buoyancy of the cylindrical floating core is increased, the cylindrical floating core floats to a proper position from an internal channel enclosed by the adjustable buoyancy cabin and the fixed buoyancy cabin, and the locking device locks the fan tower base after the cylindrical floating core in water floats upwards, so that the floating wind power tower is finally installed and molded.
The tower body adopts a wet towing mode, is transported to the site by towing, does not need the assistance of a jacket launching barge, and is convenient and safe to transport and install; the large-scale floating crane is not required to be matched and installed, and the adjustable buoyancy cabin can realize automatic righting of the tower body. The position of the adjustable buoyancy cabin on the tower body is determined by a calculation structure, a balance point is selected between wave force and restoring moment, so that the wind power tower is enabled to move minimally, and the adjustable buoyancy cabin enables the tower body to have larger restoring force and be more stable on a higher tower body; the floating wind power tower provided by the invention maintains larger restoring force by virtue of restoring rigidity provided by the floating wind power tower, so that a complex mooring system, a anchoring suction pile and tensioning equipment are not required to be arranged, a large-scale marine crane ship is not required to be levitated, the installation is more convenient, the structure is simplified, and the construction cost of a wind power plant is reduced.
Specifically, a plurality of fin plates are uniformly distributed on the peripheral surface of the suction pile in a circumferential direction. The suction pile of the present invention is located below the fixed ballast tank. The wing plate is far away from the central axis of the tower body, and the moment arm is longer, so that larger torque resisting rotation can be generated under the condition of the same surface pressure of the wing plate, and the capability of resisting the rotation load on the upper part after the suction pile is inserted into the seabed is improved. The diameter-to-height ratio of the suction pile is calculated and determined, and the top end of the suction pile is slightly higher than the mud line so as to ensure that the bottom structure does not touch the seabed during the swinging motion of the tower body. The suction pile is connected with the fixed ballast tank through the connecting section.
Further, the suction pile is in communication with an evacuation/drain pipe. When the pile is installed, if the dead weight of the tower body is insufficient to enable the suction pile to be inserted into soil, the pump is used for pumping out water in the suction pile through the pumping out/draining pipe, the pile inserting force is increased by means of negative pressure in the pile, and the pile inserting device is more convenient to install. When the buoyancy tower needs to be shifted, water is injected into the evacuation/drainage pipe to pressurize, and meanwhile, the adjustable buoyancy cabin discharges ballast to increase buoyancy, so that the suction pile and the buoyancy tower can be pulled out together, and the shifting is simpler.
Further, inlets of the first compressed air pipe, the second compressed air pipe, the mortar pumping pipe and the evacuation/drainage pipe are all positioned at the top of the fixed buoyancy cabin; the operation is convenient.
The floating wind power tower convenient to install has the beneficial effects that:
1. the tower body adopts a wet towing mode, is transported to the site by towing, does not need the assistance of a jacket launching barge, and is convenient and safe to transport and install;
2. the tower body does not need to be matched with a large-scale floating crane, and the tower body can be automatically righted through the adjustable buoyancy cabin;
3. the position of the adjustable buoyancy cabin on the tower body is determined by a calculation structure, a balance point is selected between wave force and restoring moment, so that the wind power tower is enabled to move minimally, and the adjustable buoyancy cabin enables the tower body to have larger restoring force and be more stable on a higher tower body; the floating wind power tower provided by the invention maintains larger restoring force by virtue of restoring rigidity provided by the floating wind power tower, so that a complex mooring system, a anchoring suction pile and tensioning equipment are not required to be arranged, a large-scale marine crane ship is not required to be levitated, the installation is more convenient, the structure is simplified, and the construction cost of a wind power plant is reduced.
Drawings
The invention will be described in further detail with reference to the drawings and the detailed description.
FIG. 1 is a cross-sectional view of a floating wind power tower of the present invention for ease of installation;
FIG. 2 is a top view of a suction pile of a floating wind power tower of the present invention for ease of installation;
FIG. 3 is an enlarged partial view of portion A of FIG. 1;
fig. 4 is a partial enlarged view of a portion B in fig. 1.
The method comprises the following steps of 1, a wind generating set; 2. a locking device; 3. an adjustable buoyancy module; 4. a fan tower; 5. a cylindrical floating core; 6. fixing a buoyancy cabin; 7. fixing a ballast tank; 8. suction piles; 9. truss; 10. a mortar pumping pipe; 11. a fin plate; 12. evacuating/draining pipes; 13. a first sea port; 14. a third sea port; 15. a first compressed air pipe; 16. a second sea port; 17. and a second compressed air pipe.
Detailed Description
The invention will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic representations which merely illustrate the basic structure of the invention and therefore show only the structures which are relevant to the invention.
The embodiment of the floating wind power tower convenient to install, shown in the figures 1-4, comprises a suction pile 8, a fixed ballast tank 7, a truss 9, an adjustable buoyancy cabin 3 and a fixed buoyancy cabin 6 which are fixedly connected in sequence from bottom to top, wherein the suction pile 8 is of a cylindrical structure with a closed upper end and an open lower end; the fixed ballast tank 7 is communicated with a mortar pumping pipe 10, and the top of the fixed ballast tank 7 is provided with a first sea port 13; the bottom of the adjustable buoyancy cabin 3 is provided with a third sea port 14, the adjustable buoyancy cabin 3 is communicated with a first compressed air pipe 15, and an air outlet of the first compressed air pipe 15 is positioned above the third sea port 14; the fixed buoyancy cabin 6 is a totally-enclosed hollow cabin; the adjustable buoyancy cabin 3 and the fixed buoyancy cabin 6 are annular cabins and are concentrically arranged, a cylindrical floating core 5 is in clearance fit in an internal channel surrounded by the truss 9, the adjustable buoyancy cabin 3 and the fixed buoyancy cabin 6, the cylindrical floating core 5 is communicated with a second compressed air pipe 17, a second sea opening 16 is arranged at the lower end of the cylindrical floating core 5, and an air outlet of the second compressed air pipe 17 is positioned above the second sea opening 16; the top end of the cylindrical floating core 5 is provided with a wind generating set 1 through a fan tower 4, and the wind generating set 1 is positioned outside the opening of the floating core channel; the locking device 2 is arranged at the opening of the floating core channel, and the locking device 2 is used for locking the base of the fan tower 4 after the cylindrical floating core 5 in water floats upwards.
The first sea opening 13, the second sea opening 16 and the third sea opening 14 are closed, partial sea water is filled in the cylindrical floating core 5, the interiors of the fixed ballast tank 7 and the adjustable buoyancy tank 3 are hollow, the tower body can horizontally float on the water surface, the tugboat is wet towed to the site, and the wind generating set 1 is not installed on the tower body.
Then, the first sea opening 13 and the third sea opening 14 are opened, and the fixed ballast tank 7 and the adjustable buoyancy tank 3 are filled with water, so that the tower body is automatically erected and righted. After the tower is erected, the crushed iron ore mortar is pumped in through the mortar pumping pipe 10, so that the seawater in the fixed ballast tank 7 is discharged from the first sea valve 13 above, the fixed ballast tank 7 is pressurized to fix the ballast, the gravity center of the whole tower body is adjusted to be below the floating center, and the tower body is in a stable balanced state.
Next, the wind turbine generator 1 is mounted with the wind turbine and blades on top of the wind turbine tower 4 located on the water surface.
Then, air is injected into the first compressed air pipe 15, and the air density is smaller than the sea water density, so that the compressed air forces the sea water to be discharged from the third sea port 14 below, the liquid level is lowered, and the buoyancy of the tower body is increased; the liquid level in the adjustable buoyancy cabin 3 is reduced through the first compressed air pipe 15, the buoyancy of the tower body is increased, the lifting of the fan tower 4 in the installation process is realized, and when the fan tower moves to an operation site, the liquid level in the adjustable buoyancy cabin 3 is lifted through the first compressed air pipe 15, so that the whole tower body is sunk, the suction pile 8 is inserted into the seabed by means of self gravity, soil in the insertion process enters the pile to naturally extrude water in the pile, and finally the tower body is installed on the seabed.
Then, the second sea port 16 is opened, the second compressed air pipe 17 is driven into air, sea water is discharged through the second sea port 16, the buoyancy of the cylindrical floating core 5 is increased, the cylindrical floating core 5 floats to a proper position from an internal channel enclosed by the adjustable buoyancy cabin 3 and the fixed buoyancy cabin 6, the locking device 2 locks the base of the wind turbine tower 4 after the cylindrical floating core 5 floats upwards in water, and finally the floating wind turbine tower of the embodiment is installed and molded.
The tower body of the embodiment adopts a wet towing mode, and is transported to the site without the assistance of a jacket launching barge, so that the transportation and the installation are convenient and safe; the adjustable buoyancy cabin 3 can realize automatic righting of the tower body without the cooperation of large-scale floating cranes. The position of the adjustable buoyancy cabin 3 on the tower body is determined by a calculation structure, a balance point is selected between wave force and restoring moment, so that the wind power tower is minimum in motion, and the adjustable buoyancy cabin 3 on the higher tower body enables the tower body to have larger restoring force and be more stable; therefore, the floating wind power tower of the embodiment keeps larger restoring force by depending on restoring rigidity provided by the floating wind power tower, so that a complex mooring system, a mooring suction pile and tensioning equipment are not required to be arranged, a large-scale marine crane ship is not required to be levitated, the installation is more convenient, the structure is simplified, and the construction cost of a wind power plant is reduced.
Specifically, a plurality of fin plates 11 are circumferentially and uniformly distributed on the outer peripheral surface of the suction pile 8. The suction piles 8 of the present embodiment are located below the fixed ballast tanks 7. The fin plates 11 are far away from the central axis of the tower body, and the moment arms are long, so that larger torque resisting rotation can be generated under the condition that the surface pressure of the fin plates 11 is the same, and the capability of resisting the upper rotation load after the suction piles 8 are inserted into the seabed is improved. The diameter-to-height ratio of the suction pile 8 is calculated and determined, and the top end of the suction pile is slightly higher than the mud line so as to ensure that the bottom structure does not touch the seabed during the swinging motion of the tower body. The suction piles 8 are connected with the fixed ballast tanks 7 through connecting sections.
Further, the suction pile 8 communicates with an evacuation/drain pipe 12. When the pile is installed, if the self weight of the tower body is insufficient to enable the suction pile 8 to be inserted into soil, the pump is used for pumping out water in the suction pile 8 through the pumping out/draining pipe 12, and the pile inserting force is increased by means of negative pressure in the pile, so that the pile is more convenient to install. When the buoyancy tower needs to be shifted, water is injected into the evacuation/drainage pipe 12 for pressurization, meanwhile, the adjustable buoyancy cabin 3 discharges ballast for increasing buoyancy, so that the suction pile 8 and the buoyancy tower can be pulled out together, and the shifting is simpler.
Further, the inlets of the first compressed air pipe 15, the second compressed air pipe 17, the mortar pumping pipe 10 and the evacuation/drainage pipe 12 are all located at the top of the fixed buoyancy compartment 6; the operation is convenient.
It should be understood that the above-described specific embodiments are only for explaining the present invention and are not intended to limit the present invention. Obvious variations or modifications which extend from the spirit of the present invention are within the scope of the present invention.
Claims (3)
1. A floating wind power tower convenient to installation, its characterized in that: the device comprises a suction pile (8), a fixed ballast tank (7), a truss (9), an adjustable buoyancy cabin (3) and a fixed buoyancy cabin (6) which are sequentially and fixedly connected from bottom to top, wherein the suction pile (8) is of a cylindrical structure with a closed upper end and an open lower end; the fixed ballast tank (7) is communicated with a mortar pumping pipe (10), and a first sea port (13) is formed in the top of the fixed ballast tank (7); the bottom of the adjustable buoyancy cabin (3) is provided with a third sea port (14), the adjustable buoyancy cabin (3) is communicated with a first compressed air pipe (15), and an air outlet of the first compressed air pipe (15) is positioned above the third sea port (14); the fixed buoyancy cabin (6) is a totally-enclosed hollow cabin; the adjustable buoyancy cabin (3) and the fixed buoyancy cabin (6) are annular cabins and are concentrically arranged, a cylindrical floating core (5) is in clearance fit in an inner channel surrounded by the truss (9), the adjustable buoyancy cabin (3) and the fixed buoyancy cabin (6), the cylindrical floating core (5) is communicated with a second compressed air pipe (17), a second sea opening (16) is formed in the lower end of the cylindrical floating core (5), and an air outlet of the second compressed air pipe (17) is positioned above the second sea opening (16); the top end of the cylindrical floating core (5) is provided with a wind generating set (1) through a fan tower (4), and the wind generating set (1) is positioned outside the opening of the floating core channel; a locking device (2) is arranged at the opening of the floating core channel, the locking device (2) is used for locking a base of the fan tower (4) after the cylindrical floating core (5) in water floats upwards, and a plurality of fin plates (11) are uniformly distributed on the peripheral surface of the suction pile (8) in a circumferential direction;
the floating wind power tower is installed in the following process: the method comprises the steps of closing a first sea opening (13), a second sea opening (16) and a third sea opening (14), filling partial seawater into a cylindrical floating core (5), arranging a fixed ballast tank (7) and an adjustable buoyancy cabin (3) in a hollow mode, transversely floating a tower body on the water surface, and wet towing a tugboat to the site, wherein a wind generating set (1) is not installed on the tower body; then, the first sea port (13) and the third sea port (14) are opened, the fixed ballast tank (7) and the adjustable buoyancy tank (3) are filled with water, the self erection and the righting of the tower body are realized, the ground iron ore mortar is pumped into the tower body through the mortar pumping pipe (10) after the erection, the seawater in the fixed ballast tank (7) is discharged from the first sea port (13) above, the pressurizing and the fixed ballast of the fixed ballast tank (7) are realized, and the integral gravity center of the tower body is adjusted to be below a floating center, so that the tower body is in a stable and balanced state; then, a fan and blades of the wind generating set (1) are arranged at the top end of a fan tower (4) positioned on the water surface; then, air is injected into the first compressed air pipe (15), and the compressed air forces the seawater to be discharged from the third sea port (14) below due to the fact that the air density is smaller than the seawater density, so that the liquid level is lowered, and the buoyancy of the tower body is increased; the liquid level in the adjustable buoyancy cabin (3) is reduced through the first compressed air pipe (15), the buoyancy of the tower body is increased, the lifting of the fan tower (4) in the installation process is realized, and when the fan tower moves to an operation site, the liquid level in the adjustable buoyancy cabin (3) is lifted through the first compressed air pipe (15), the whole tower body is sunk, the suction pile (8) is inserted into the seabed by means of self gravity, soil enters the pile in the insertion process to naturally extrude water in the pile, and finally the tower body is installed on the seabed; then, a second sea opening (16) is opened, air is pumped into a second compressed air pipe (17), sea water is discharged through the second sea opening (16), buoyancy of the cylindrical floating core (5) is increased, the cylindrical floating core (5) floats to a proper position from an inner channel surrounded by the adjustable buoyancy cabin (3) and the fixed buoyancy cabin (6), and the locking device (2) locks a base of the fan tower (4) after the cylindrical floating core (5) in water floats upwards.
2. The floating wind power tower of claim 1, wherein the floating wind power tower is easy to install and comprises: the suction pile (8) is communicated with an evacuation/drainage pipe (12).
3. A floating wind power tower for facilitating installation according to any of claims 1-2, wherein: the inlets of the first compressed air pipe (15), the second compressed air pipe (17), the mortar pumping pipe (10) and the evacuation/drainage pipe (12) are all positioned at the top of the fixed buoyancy cabin (6).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711193518.1A CN107792307B (en) | 2017-11-24 | 2017-11-24 | Floating wind power tower convenient to installation |
| PCT/CN2017/117322 WO2019100490A1 (en) | 2017-11-24 | 2017-12-20 | Floating wind power tower convenient for installation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711193518.1A CN107792307B (en) | 2017-11-24 | 2017-11-24 | Floating wind power tower convenient to installation |
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| CN107792307A CN107792307A (en) | 2018-03-13 |
| CN107792307B true CN107792307B (en) | 2023-08-22 |
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| CN201711193518.1A Active CN107792307B (en) | 2017-11-24 | 2017-11-24 | Floating wind power tower convenient to installation |
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| WO (1) | WO2019100490A1 (en) |
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| CN110374131A (en) * | 2019-07-19 | 2019-10-25 | 浙江大学 | A kind of cylinder composite truss formula offshore wind turbine foundation and its construction technology |
| CN113987672A (en) * | 2021-10-12 | 2022-01-28 | 中国海洋大学 | Crane ship optimization design analysis method based on multi-body motion and power coupling |
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| JP2007263077A (en) * | 2006-03-29 | 2007-10-11 | National Maritime Research Institute | Marine wind power generating equipment |
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| JP2012201218A (en) * | 2011-03-25 | 2012-10-22 | Toda Constr Co Ltd | Method for constructing offshore wind power generation facility |
| CN102285429A (en) * | 2011-05-26 | 2011-12-21 | 天津大学 | Floating type supporting structure for marine windmill |
| CN103010417A (en) * | 2012-12-21 | 2013-04-03 | 天津大学 | Offshore wind power floating foundation suitable for small water plane with water depth below 100m |
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| CN103758705A (en) * | 2014-02-14 | 2014-04-30 | 南通中远川崎船舶工程有限公司 | Double-body floating type offshore wind turbine system |
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Also Published As
| Publication number | Publication date |
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| WO2019100490A1 (en) | 2019-05-31 |
| CN107792307A (en) | 2018-03-13 |
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