CN212290238U - Semi-submersible wind power generation foundation platform - Google Patents
Semi-submersible wind power generation foundation platform Download PDFInfo
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- CN212290238U CN212290238U CN202022112038.1U CN202022112038U CN212290238U CN 212290238 U CN212290238 U CN 212290238U CN 202022112038 U CN202022112038 U CN 202022112038U CN 212290238 U CN212290238 U CN 212290238U
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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- 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 relates to a semi-submersible wind power generation foundation platform, which comprises a foundation structure platform, a fan tower, a wind generating set, an umbilical cable and a positioning system; the central part at the top of the foundation structure platform is a central floating box, the upper part of the central floating box is connected with a fan tower frame, and the top of the fan tower frame is provided with a wind generating set; an upright post vertical to the water surface is arranged outside a central buoyancy tank at the top of the foundation structure platform, and a horizontal buoyancy tank is arranged between the upright post and the central buoyancy tank; the lower parts of the adjacent upright posts are connected through a connecting buoyancy tank, and the bottom ends of the upright posts are provided with heave plates; the bottom of the base structure platform is in a regular triangle structure; the bottom of the central buoyancy tank is connected with an umbilical cable connected with a seabed power line. The utility model has the advantages that: the utility model discloses a foundation platform simple structure is reasonable, and wind generating set arranges for the foundation structure platform has the symmetry, and the interchangeability of structural component and mooring system is high, is favorable to the standardization of foundation platform structure to reduce construction cost.
Description
Technical Field
The utility model relates to a wind power generation technical field, in particular to marine semi-submerged formula wind power generation foundation platform.
Background
Wind energy is increasingly gaining attention as a clean renewable energy source in all countries of the world. With the development of land wind power resources, the high-quality wind power resources which can be developed at present in China are gradually reduced, the potential development amount of offshore wind power is huge, coastal areas are developed economically, the energy demand is high, and therefore offshore wind power generation projects need to be actively developed.
The offshore wind power generation has the advantages that firstly, the offshore wind speed is high, and the annual utilization rate is high. Secondly, the offshore area is wide, the large-scale fan is allowed, and the single-machine power generation amount is high. And thirdly, the electric power transportation cost is reduced, coastal cities are developed economically, the power consumption is higher, western electric power productivity is effectively reduced, and excess productivity can be relieved.
The existing offshore wind power generation device basically adopts a fixed platform foundation, is erected after piling at the seabed, and has little difference with the existing offshore wind power generation device on the land. Most of the wind power generators are erected in shallow sea water, and the water depth is generally not more than 30 meters. However, the technology is applied to the long coastal shallow water areas in China, and the due economic effect is difficult to achieve.
The further off-shore the wind strength is. In deep and open sea, the wind speed is strong and the wind resource is stable. Over 80% of the world's potential wind resources are in sea areas with water depths of 50 to 60 meters. As offshore wind power generation is moving to deep open sea, the depth of water makes the fixed wind power foundation economically unfeasible. As early as more than twenty years ago, the european and american countries began studying the conceptual design of floating platform structures for carrying wind turbines at sea. Therefore, in order to convert abundant offshore wind resources into green low-cost electric energy, the research on the offshore floating type wind power generation basic platform technology has important strategic significance.
In order to meet the requirement of the development of a offshore floating wind power plant, the wind power field adopts the structural form of a floating platform commonly used in the marine oil and gas industry, and the floating platform comprises a single-column platform (SPAR), a Semi-Submersible platform (Semi-Submersible) and a vertical leg platform (TLP) floating wind power foundation. There are currently about 30 concepts of floating wind power generation in the world, from more than 10 countries. In various floating offshore wind power generation basic platform concepts, a semi-submersible wind power generation platform form is mainly used.
WindFloat is a representative semi-submersible wind Power generation base platform, developed by Principle Power, Vestas and EDP in collaboration. The platform main body is composed of three upright columns and a truss-beam type pipe structure connected among the buoys, a fan is asymmetrically located on one of the upright columns, dynamic ballast water can automatically offset wind-leaning moment, a positioning system adopts mooring positioning, and a damping plate is arranged at the bottom of each buoy to increase damping of heave motion so as to reduce amplitude of the heave motion. The defects are that the structure of the wind turbine foundation platform is complex, the wind turbine is asymmetric relative to the power generation foundation platform, interchangeability between the upright column buoy and the mooring system is poor, and construction cost is high.
The patent publication No. CN107539433A discloses a semi-submersible fan platform, the main structural form of which is similar to WindFloat, and a fan is asymmetrically positioned on one upright post. Although the horizontal connecting beam and the section on the top of the basic platform are changed, the horizontal connecting beam has the same characteristics as the WindFloat.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the not enough among the prior art, provide a semi-submerged formula wind power generation foundation platform.
The semi-submersible wind power generation foundation platform comprises a foundation structure platform, a fan tower, a wind generating set, an umbilical cable and a positioning system; the central part at the top of the foundation structure platform is a central floating box, the upper part of the central floating box is connected with a fan tower frame, and the top of the fan tower frame is provided with a wind generating set; an upright post vertical to the water surface is arranged outside a central buoyancy tank at the top of the foundation structure platform, and a horizontal buoyancy tank is arranged between the upright post and the central buoyancy tank; the lower parts of the adjacent upright posts are connected through a connecting buoyancy tank, and the bottom ends of the upright posts are provided with heave plates; the bottom of the base structure platform is in a regular triangle structure; the bottom of the central buoyancy tank is connected with an umbilical cable connected with a seabed power line; the positioning system comprises an anchoring system and an anchoring device, one end of the anchoring system is connected with each vertex of a triangle at the bottom of the foundation structure platform, and the other end of the anchoring system is connected with the anchoring device positioned on the seabed.
Preferably, the method comprises the following steps: three horizontal buoyancy tanks which are located on the same horizontal plane and have an included angle of 120 degrees are connected together through a central buoyancy tank, the lower parts of three stand columns at the outer ends of the three horizontal buoyancy tanks are connected through connecting buoyancy tanks and are arranged in a regular triangle, and the bottoms of the three stand columns are respectively located at the top points of the regular triangle at the bottom of the foundation structure platform and are perpendicular to the bottom surface of the foundation structure platform.
Preferably, the method comprises the following steps: the wind turbine tower and the wind generating set are positioned right above the geometric center of the foundation structure platform.
Preferably, the method comprises the following steps: the section of the central buoyancy tank is circular, triangular or polygonal.
Preferably, the method comprises the following steps: the cross sections of the horizontal buoyancy tank and the connecting buoyancy tank are circular, rectangular or polygonal.
Preferably, the method comprises the following steps: the section of the upright post is rectangular, circular or polygonal.
Preferably, the method comprises the following steps: the heave plate is a horizontal plate, and the cross section of the heave plate is circular, triangular, rectangular or polygonal.
Preferably, the method comprises the following steps: the upper end of the umbilical cable in a lazy wave or slow wave form is connected with the bottom of the central buoyancy tank through the bending-resistant centralizer, and the lower end of the umbilical cable is connected with a seabed power line.
Preferably, the method comprises the following steps: the anchoring system is composed of anchor chains and steel cables or composite fiber cables, is in a catenary shape through a guide device on the outer side of the upright post and is connected with an anchoring device positioned on the seabed.
The utility model has the advantages that: the utility model discloses a foundation platform simple structure is reasonable, and wind generating set arranges for the foundation structure platform has the symmetry, and the interchangeability of structural component and mooring system is high, is favorable to the standardization of foundation platform structure to reduce construction cost.
Drawings
FIG. 1 is a schematic structural view of a semi-submersible wind power generation foundation platform;
FIG. 2 is a schematic diagram of a first exemplary form of an infrastructure platform top-level structure;
FIG. 3 is a schematic diagram of a second exemplary form of an infrastructure platform top level structure;
FIG. 4 is a schematic diagram of a third exemplary form of an infrastructure platform top-level structure;
FIG. 5 is a schematic diagram of a fourth exemplary form of an infrastructure platform top-level structure;
FIG. 6 is a cross-sectional view of a first exemplary form taken along section line A-A of FIG. 1;
FIG. 7 is a cross-sectional view of a second exemplary form taken along section line A-A of FIG. 1;
FIG. 8 is a cross-sectional view of a third exemplary form taken along section line A-A of FIG. 1;
FIG. 9 is a schematic flow chart of a method for installing a semi-submersible wind turbine foundation platform.
Description of reference numerals: the device comprises a vertical column 1, a horizontal buoyancy tank 2, a central buoyancy tank 3, a fan tower 4, a wind generating set 5, a connecting buoyancy tank 6, a heave plate 7, an anchoring system 8, an umbilical cable 9 and an anchoring device 10.
Detailed Description
The present invention will be further described with reference to the following examples. The following description of the embodiments is merely provided to aid in understanding the invention. It should be noted that the embodiments are exemplary and should not be construed as limiting the invention. It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the principles of the invention, and these modifications and variations also fall within the scope of the claims of the invention.
The patent provides a semi-submersible wind power generation foundation platform and an installation method thereof. The platform is simple and reasonable in structure, the wind generating set is symmetrical relative to the arrangement of a foundation structure platform, and the interchangeability of structural components and an anchoring system is high, so that the platform is favorable for standardization, is suitable for the manufacturing capability of ocean engineering in China, reduces the construction cost and is easy to install; the installation and debugging of the wind generating set and the platform can be finished in a dry dock, and are not influenced by wave environmental conditions; the wind generating set and the foundation platform can be integrally transported to a destination by towing; all installation operations, including balance adjustment, anchor chain positioning, dynamic cable connection, etc., are reversible; the foundation platform and the wind generating set can be dragged back to a dry dock for maintenance activities under necessary conditions; the integral construction, installation and operation and maintenance cost of the floating type wind power generation semi-submersible platform is greatly reduced, and a feasible scheme is provided for large-scale commercialization of the floating type wind power generation platform.
Example one
As shown in fig. 1, the semi-submersible wind power generation foundation platform comprises a foundation structure platform, a wind turbine tower 4, a wind turbine generator system 5, an umbilical cable 9 and a positioning system; the foundation structure platform comprises upright columns 1, horizontal buoyancy tanks 2, a central buoyancy tank 3, connecting buoyancy tanks 6 and a heave plate 7, wherein the central buoyancy tank 3 at the top of the foundation structure platform is connected with a fan tower 4, the top of the foundation structure platform supports facilities for controlling a balance device, the three upright columns 1 are perpendicular to the water surface, the horizontal buoyancy tanks 2 are arranged between the upright columns 1 and the central buoyancy tank 3, the lower parts of the three upright columns 1 are connected through the connecting buoyancy tanks 6, the bottom of the foundation structure platform is in a regular triangle structure form, and the bottom of the central buoyancy tank 3 is connected with an umbilical cable 9 connected with a seabed power line; the positioning system comprises an anchoring system 8 and an anchoring device 10, one end of the anchoring system 8 is connected with each vertex of a triangle at the bottom of the foundation structure platform, and the other end of the anchoring system 8 is connected with the anchoring device 10 positioned on the seabed.
Three horizontal flotation tanks 2 that are located same horizontal plane and two liang of contained angles are 120 degrees link together through central flotation tank 3, with the central structure of 3 upper end rigid couplings of central flotation tank in order to be used for supporting fan pylon 4, 2 outer ends of three horizontal flotation tank are equipped with stand 1, and three stand 1 is spaced apart from each other and the perpendicular to surface of water, connect and be regular triangle-shaped through connecting flotation tank 6 between two liang of adjacent stand 1 lower parts and arrange, stand 1 bottom is triangle-shaped every summit setting promptly and hangs down board 7, be used for reducing the response amplitude of the motion of swinging. Wherein, the interval between three stand 1 is big enough can satisfy the requirement of platform stability.
The wind turbine tower 4 and the wind generating set 5 are located right above the geometric center of the basic structure platform and have symmetry to the basic structure of the platform.
The top layer structure form of the foundation structure platform depends on the section shape of the central buoyancy tank 3, the section shape of the upright post 1 and the connection mode of the horizontal buoyancy tank 2, the central buoyancy tank 3 and the upright post 1. Fig. 2 to 5 are schematic views of four exemplary forms of the top layer structure of the foundation structure platform, and the cross section of the central buoyancy tank can be circular or polygonal.
The cross-section of three horizontal buoyancy tanks 2 which are positioned on the same horizontal plane and have 120-degree included angles in the top layer structure of the foundation structure platform can be circular, rectangular or polygonal, and the connection mode of the central buoyancy tank 3 and the upright columns 1 can be diversified. The top-level structural form of the infrastructure platform is therefore not limited to the four exemplary structural forms of fig. 2 to 5.
The bottom ends of the three stand columns 1 are respectively positioned at the vertex angles of the regular triangle at the bottom of the foundation structure platform and are perpendicular to the bottom surface of the foundation structure platform, the top of each stand column 1 is connected with the horizontal buoyancy tank 2 at the top of the foundation structure platform, and the adjacent geometric included angles formed by combining the three stand columns 1 are 60 degrees. The cross section of the upright post 1 can be rectangular, circular or polygonal, etc.
The structural form of the bottom of the foundation structure platform depends on the sectional shape of the columns 1, the sectional shape of the connecting buoyancy tanks 6, the sectional shape of the heave plates 7 and the form of the connection of the buoyancy tanks 6 with the columns 1. The included angle between two adjacent connecting buoyancy tanks 6 is 60 degrees. The heave plate 7 at the bottom of the upright post 1 of the foundation structure platform is a horizontal plate, and the section of the heave plate 7 can be circular, triangular, rectangular or polygonal. The cross section of the connecting buoyancy tank 6 is circular, rectangular or polygonal. Fig. 6 to 8 are sectional views of three exemplary forms along a-a sectional line, but are not limited to the three exemplary structural forms of fig. 6 to 8.
The upper end of the umbilical cable 9 is connected with the bottom of the central buoyancy tank 3 through the bending-resistant centralizer, and the lower end of the umbilical cable is connected with a seabed power line and is in a lazy wave or slow wave form so as to relieve the influence of the platform motion on the umbilical cable system. The particular configuration of the umbilical 9 takes into account the movement of the platform and the relative spatial arrangement of the columns 1 with the horizontal pontoons 2, connecting pontoons 6, central pontoons 3, etc. to avoid possible interference with the platform structure.
The anchoring system 8, which may be constituted by anchor chains-wire ropes-anchor chains or by composite fibre cables, is connected to the anchoring means 10 at the seabed in the form of catenary lines by means of guide means outside the upright 1. The pretension at the upper end of mooring system 8 is determined by the overall performance of the entire semi-submersible wind turbine platform foundation.
Example two
As shown in fig. 9, the method for installing the semi-submersible wind power generation foundation platform comprises the following steps:
s1, as the anchoring device 10 at the bottom of the anchor chain (mooring system 8), a driven pile is used in advance or a suction anchor is installed.
And S2, after the driven piles or the suction anchors are installed, arranging the anchor chains and the cables on the seabed along a preset route, and after the laying of the anchor chains is finished, making corresponding marks and abandoning the cables.
And S3, building the foundation structure platform in the dock, and after the foundation structure platform is built, undocking the foundation structure platform in a self-floating way.
And S4, installing the fan tower 4, the engine room and the wind wheel (wind generating set 5) on the shore by using a crane, and butting with the foundation structure platform to form a fan foundation.
S5, towing the whole fan foundation to a marine installation area by adopting a wet towing mode when the installed fan foundation is drafted to a certain depth.
S6, connecting the anchor chain laid in advance with a foundation structure platform: each anchor chain needs to be restored to the water surface, then anchor chain connection is carried out on the mounting platform, and finally the anchor chain is pulled to the foundation structure platform.
S7, adjusting ballast water of the bottom of the foundation structure platform and connecting the buoyancy tank 6 with the upright post 1, and adjusting the draft of the platform to the working draft.
The installation method of the semi-submersible type wind power generation foundation platform is convenient and fast to install, achieves good stability in towing and working states, reduces installation cost of the floating type fan foundation, shortens installation period, reduces requirements for installation machines and tools, is low in later maintenance cost, and can be widely applied to deep water sea areas of different degrees.
Claims (9)
1. The utility model provides a semi-submerged formula wind power generation foundation platform which characterized in that: the wind power generation system comprises a foundation structure platform, a fan tower, a wind generating set, an umbilical cable and a positioning system; the central part at the top of the foundation structure platform is a central floating box, the upper part of the central floating box is connected with a fan tower frame, and the top of the fan tower frame is provided with a wind generating set; the vertical columns perpendicular to the water surface are arranged outside the central buoyancy tank at the top of the foundation structure platform, a horizontal buoyancy tank is arranged between the upper part of each vertical column and the central buoyancy tank, the lower parts of the adjacent vertical columns are connected through a connecting buoyancy tank, and the bottom ends of the vertical columns are provided with heave plates; the bottom of the base structure platform is in a regular triangle structure; the bottom of the central buoyancy tank is connected with an umbilical cable connected with a seabed power line; the positioning system comprises an anchoring system and an anchoring device, one end of the anchoring system is connected with each vertex of a triangle at the bottom of the foundation structure platform, and the other end of the anchoring system is connected with the anchoring device at the bottom of the sea.
2. The semi-submersible wind power generation base platform of claim 1, wherein: three horizontal buoyancy tanks which are located on the same horizontal plane and have an included angle of 120 degrees are connected together through a central buoyancy tank, the lower parts of three stand columns connected with the outer ends of the three horizontal buoyancy tanks are connected through connecting buoyancy tanks and are in a regular triangle arrangement form, and the bottoms of the three stand columns are respectively located at the top points of a regular triangle at the bottom of the foundation structure platform and are perpendicular to the bottom surface of the foundation structure platform.
3. The semi-submersible wind power generation base platform of claim 1, wherein: the wind turbine tower and the wind generating set are positioned right above the geometric center of the foundation structure platform.
4. The semi-submersible wind power generation base platform of claim 1, wherein: the section of the central buoyancy tank is circular, triangular or polygonal.
5. The semi-submersible wind power generation base platform of claim 1, wherein: the cross sections of the horizontal buoyancy tank and the connecting buoyancy tank are circular, rectangular or polygonal.
6. The semi-submersible wind power generation base platform of claim 1, wherein: the section of the upright post is rectangular, circular or polygonal.
7. The semi-submersible wind power generation base platform of claim 1, wherein: the heave plate is a horizontal plate, and the cross section of the heave plate is circular, triangular, rectangular or polygonal.
8. The semi-submersible wind power generation base platform of claim 1, wherein: the upper end of the umbilical cable in a lazy wave or slow wave form is connected with the bottom of the central buoyancy tank through the bending-resistant centralizer, and the lower end of the umbilical cable is connected with a seabed power line.
9. The semi-submersible wind power generation base platform of claim 1, wherein: the anchoring system is composed of anchor chains and steel cables or composite fiber cables, and is connected with the anchoring device positioned on the seabed through a guide device on the outer side of the bottom of the upright post in a catenary shape.
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| CN202022112038.1U CN212290238U (en) | 2020-09-23 | 2020-09-23 | Semi-submersible wind power generation foundation platform |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112009635A (en) * | 2020-09-23 | 2020-12-01 | 浙江浙能技术研究院有限公司 | Semi-submersible type wind power generation foundation platform and installation method thereof |
| CN114104195A (en) * | 2021-11-25 | 2022-03-01 | 三峡珠江发电有限公司 | Mooring system suitable for medium-shallow water floating type offshore wind power foundation platform |
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2020
- 2020-09-23 CN CN202022112038.1U patent/CN212290238U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112009635A (en) * | 2020-09-23 | 2020-12-01 | 浙江浙能技术研究院有限公司 | Semi-submersible type wind power generation foundation platform and installation method thereof |
| CN112009635B (en) * | 2020-09-23 | 2024-10-18 | 浙江浙能技术研究院有限公司 | Semi-submersible type wind power generation foundation platform and installation method thereof |
| CN114104195A (en) * | 2021-11-25 | 2022-03-01 | 三峡珠江发电有限公司 | Mooring system suitable for medium-shallow water floating type offshore wind power foundation platform |
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