CN113236502A - Floating type offshore wind turbine foundation - Google Patents
Floating type offshore wind turbine foundation Download PDFInfo
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- CN113236502A CN113236502A CN202110691534.3A CN202110691534A CN113236502A CN 113236502 A CN113236502 A CN 113236502A CN 202110691534 A CN202110691534 A CN 202110691534A CN 113236502 A CN113236502 A CN 113236502A
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- floating body
- floating
- wind turbine
- offshore wind
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D13/00—Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components
- F03D13/20—Arrangements for mounting or supporting wind motors; Masts or towers for wind motors
- F03D13/25—Arrangements for mounting or supporting wind motors; Masts or towers for wind motors specially adapted for offshore installation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
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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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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Wind Motors (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
Abstract
The invention discloses a floating offshore wind turbine foundation which comprises a floating body, wherein a damping plate extending downwards is arranged on the periphery of the floating body, a plurality of anchor chains are further arranged at the bottom of the floating body, a cylinder penetrating the top and the bottom of the floating body is arranged in the center of the floating body, the floating body is composed of a plurality of small floating bodies distributed along the axis of the cylinder, the inside of each small floating body is of a cavity structure, and a balance weight is loaded in a cavity inside the small floating body. This fan basis not only can solve offshore wind farm's marine construction condition relatively poor, construction window period is shorter, the big scheduling problem of the construction degree of difficulty, and this fan basis overall height is less, the depth of entry is little, thereby can be on the bank or the pier manufacturing of processing, and accomplish the installation of equipment such as wind turbine generator system, then whole towage transportation to offshore wind farm's fan position department, the marine construction activity duration that can significantly reduce, reduce the construction degree of difficulty, shorten construction period, thereby reduce engineering construction risk, practice thrift the engineering investment.
Description
Technical Field
The invention relates to an offshore wind turbine foundation, in particular to a floating type offshore wind turbine foundation.
Background
The floating foundation of the offshore wind turbine has various types, is generally designed by taking the experience of an offshore oil platform as a reference, and has main types of a column type (Spar type), a tension leg type (TLP type) and a SEMI-submersible type (SEMI type), or a combination of the two types. The column foundation has the advantages of simple structure, small vertical wave exciting force, good stability and the like, but has higher requirements on the working water depth, the water depth is usually required to be more than 80m, the foundation cannot be towed, and the installation of a fan needs to be carried out in an offshore wind farm. The semi-submersible foundation is suitable for a wide sea area, can be transported by a wet towing method, has a mature technology, and is easily influenced by waves and the like due to a large waterline area. The tension leg type foundation has the advantages of high stability, light dead weight and the like, but the installation process of the mooring system is complex, the construction cost of the tension tendon structure is high, and the wind turbine installation is usually carried out in an offshore wind farm.
Disclosure of Invention
The invention aims to provide a floating offshore wind turbine foundation. This fan basis overall height is less, the depth of entry is little to can be on the bank or the pier manufacturing of going on, and accomplish the installation of equipment such as wind turbine generator system, then whole towing boat transports to the fan position department of offshore wind farm, the marine construction activity duration that can significantly reduce reduces the construction degree of difficulty, reduction construction period. The wind turbine foundation solves the problems that offshore construction conditions of an offshore wind farm are poor, a construction window period is short, construction difficulty is high and the like, can reduce engineering construction risks, and saves engineering investment.
The technical scheme of the invention is as follows: the utility model provides a float marine fan basis of formula, is equipped with the damping plate that stretches into downwards including the body, body periphery, and the body bottom still is equipped with many anchor chains, and the body center is equipped with the drum that link up its top, bottom, and the body comprises the little body that the drum axis distributes is followed to a plurality of, and every little body is inside to be the cavity structure, and its inside cavity loading has the counter weight.
In the above-mentioned floating offshore wind turbine foundation, the cross-section of the floating body is in a semi-elliptical shape, the plane of the floating body is in a circular shape, the small floating body comprises an arc-shaped bottom plate, two sides of the arc-shaped bottom plate are respectively provided with 1 vertical partition plate, and a top baffle plate is fixed at the top of each vertical partition plate.
In the floating offshore wind turbine foundation, when 2 adjacent small floating bodies are assembled and fixed, the top splicing seams of the small floating bodies are provided with the longitudinal beams, the bottoms of the longitudinal beams are supported on the vertical partition plate, the top of the longitudinal beams is fixedly provided with the top baffle, and the two ends of the top baffle are fixedly connected with the cylinders and the damping plates respectively.
In aforementioned showy formula offshore wind turbine basis, each top baffle bottom still fixed horizontal connecting rod that is provided with, horizontal connecting rod both ends respectively with 2 longerons fixed connection of each top baffle both sides.
In the above-mentioned floating offshore wind turbine foundation, the bottom of the longitudinal beam is fixedly connected with the arc-shaped bottom plate below the longitudinal beam through the vertical connecting rod.
In the above-mentioned floating offshore wind turbine foundation, the damping plate is arranged obliquely outward, and has an included angle of 10 to 20 degrees with the vertical direction, and the inner wall of the damping plate is fixedly connected with the outer wall of the arc-shaped bottom plate through an oblique supporting rod.
In the above floating offshore wind turbine foundation, the damping plate is made of a steel plate or a corrosion-resistant material having a certain strength.
In the above floating offshore wind turbine foundation, the counterweight is made of concrete or a material having a relatively large specific gravity.
In the above floating offshore wind turbine foundation, the top baffle may be a thin-walled, lightweight material.
In the floating offshore wind turbine foundation, the whole formed by fixedly connecting the small floating body top baffles is a plane.
The invention has the beneficial effects that: compared with the prior art, the plane of the fan foundation is in a circular shape, the bottom of the foundation is in a semi-elliptical shape, the whole fan foundation is composed of a plurality of small floating bodies, the inner part of each small floating body is in a cavity structure, and a balance weight is loaded in the cavity of each small floating body, so that the stability of the whole fan foundation in seawater is facilitated. The damping plate is arranged around the floating body of the fan foundation and connected with the fan foundation, has certain rigidity, has certain damping effect when water flow, waves and the like act on the fan foundation, can reduce the overturning and vibration of the water flow, the waves and the like on the fan foundation, reduces adverse effects and improves the stability of the fan foundation.
The floating offshore wind turbine foundation has the advantages of small total height, wide applicable water depth range, capability of finishing processing and manufacturing on a wharf or a shore, capability of finishing installation of equipment such as a wind turbine and the like on the wharf or the shore, capability of integrally towing and transporting to a wind turbine position of an offshore wind farm, capability of finishing installation and positioning of the wind turbine in a short time, and capability of furthest reducing time and risk of offshore operation. The offshore construction operation time can be greatly shortened, the construction difficulty is reduced, and the construction period is shortened, so that the engineering construction risk is reduced, and the engineering investment is saved.
The floating body of the floating offshore wind turbine foundation consists of a plurality of mutually independent small floating bodies, and the number of the small floating bodies can be determined according to factors such as the size of the floating body of the wind turbine foundation. Each small floating body is independent, even a certain small floating body is damaged, other small floating bodies are not influenced, and the overall stability of the fan foundation is not influenced. Each small floating body can be independently processed and manufactured and then assembled, and the whole fan foundation is simple and convenient to manufacture and process.
Drawings
FIG. 1 is a schematic plan view of the present invention;
FIG. 2 is a schematic structural view of FIG. 1 without the top baffle;
FIG. 3 is a schematic cross-sectional view of FIG. 1;
fig. 4 is a schematic view of the structure of fig. 1 without the roof boarding and stringers.
Reference numerals: 1-damping plate, 2-anchor chain, 3-cylinder, 4-counterweight, 5-arc bottom plate, 6-vertical partition plate, 7-top baffle, 8-longitudinal beam, 9-horizontal connecting rod, 10-vertical connecting rod and 11-oblique supporting rod.
Detailed Description
The invention is further illustrated by the following figures and examples, which are not to be construed as limiting the invention.
Example of implementation of the invention: a floating offshore wind turbine foundation is shown in figures 1-4 and comprises a floating body, wherein a damping plate 1 extending downwards is arranged on the periphery of the floating body, a plurality of anchor chains 2 are further arranged at the bottom of the floating body, and the anchor chains 2 are formed by connecting a plurality of chain rings and are of a catenary mooring structure. The center of the floating body is provided with a cylinder 3 penetrating through the top and the bottom of the floating body, and the size of the top of the cylinder 3 is matched with the size of the bottom of a tower cylinder of a fan to be installed. The floating body is composed of a plurality of small floating bodies which are uniformly distributed along the axis of the cylinder 3, the inside of each small floating body is of a cavity structure, and a counterweight 4 is loaded in the inner cavity of each small floating body.
The total height (namely the height of the floating body) of the floating offshore wind turbine foundation is small, so that the floating offshore wind turbine foundation can be machined and manufactured on the shore or on a wharf, the wind turbine generator and other equipment can be installed, and then the floating offshore wind turbine foundation is integrally towed and transported to a wind turbine position of an offshore wind farm, so that the offshore construction operation time can be greatly shortened, the construction difficulty is reduced, the construction period is shortened, the engineering construction risk is reduced, and the engineering investment is saved.
In the integral structure, the floating body consists of a plurality of small floating bodies with hollow cavity structures inside, so the floating body can float on the sea surface. After the wind turbine is towed and transported to the position of a wind turbine of an offshore wind farm, the anchor chain 2 is connected with a seabed fixed pier (or anchor), so that the position of the wind turbine foundation is fixed, and the small floating body is internally loaded with the counterweight 4 to prevent the wind turbine foundation from overturning under the action of wind power or seawater impact force. The cylinder 3 is used for connecting with a tower body of a fan, and the power generated by the fan is led out through a cable penetrating through the cylinder 3. Through the damping plate 1 arranged on the periphery of the floating body, overturning and vibration of water flow, waves and the like on the fan foundation can be reduced, and therefore stability of the fan foundation is improved.
This float marine fan basis has set up the damping plate structure in its periphery, and this structure can effectively reduce rivers, wave to the stable adverse effect of fan basis to improve the overall stability of fan basis.
The section of the floating body is in a semi-elliptical shape, and the plane of the floating body is in a circular shape, so that the stability of the whole fan foundation in seawater is facilitated. Each small floating body comprises 1 arc-shaped bottom plate 5, two sides of the top surface of each arc-shaped bottom plate 5 are respectively provided with 1 vertical partition plate 6, and the top of each vertical partition plate 6 is fixed with a top baffle 7. The vertical partition plate 6 and the cylinder 3 are fixed together in the assembling process, so that each small floating body can form 1 cavity structure. Each small floating body is provided with 2 vertical partition plates 6 so as to be separated from the surrounding small floating bodies, and an independent individual is formed. Even certain little body takes place to damage in later stage, can not influence the service function of other little bodies yet, guarantee the overall stability of fan basis. Each small floating body can be independently processed and manufactured and then assembled. In the small floating body structure, the arc-shaped bottom plate 5 provides required buoyancy, the small floating body is enclosed into a cavity structure through the arc-shaped bottom plate 5, the vertical partition plate 6 and the top baffle plate 7, and the top baffle plate 7 is mainly used for preventing rainwater or seawater from entering the small floating body.
When the adjacent 2 small floating bodies are assembled and fixed, the top splicing seams of the small floating bodies are provided with longitudinal beams 8, the bottom of each longitudinal beam 8 supports 2 vertical partition plates 6 adjacent to the adjacent 2 small floating bodies, the top of each longitudinal beam is fixedly provided with a top baffle 7, and the two ends of each longitudinal beam are respectively fixedly connected with the cylinders 3 and the damping plates 1. The bottom of each top baffle 7 is also fixedly provided with a horizontal connecting rod 9, and two ends of the horizontal connecting rod 9 are respectively fixedly connected with 2 longitudinal beams 8 on two sides of each top baffle 7. The bottom of the longitudinal beam 8 is fixedly connected with the arc bottom plate 5 below the longitudinal beam through a vertical connecting rod 10. Through longeron 8, horizontal connecting rod 9 and vertical connecting rod 10 with a plurality of little body fixed connection together, form the whole of 1 completion, improve overall structure's intensity and stability.
The damping plate 1 is arranged in an inclined outer side, the included angle between the damping plate 1 and the vertical direction is 10-20 degrees, and the arrangement enables the damping plate 1 to have good protection performance. The inner wall of the damping plate 1 is fixedly connected with the outer wall of the arc-shaped bottom plate 5 through the inclined supporting rods 11, the supporting effect of the damping plate 1 is improved through the inclined supporting rods 11, the damping plate 1 is prevented from deforming under the impact action of sea waves, and the stability of the damping plate structure and the overall stability of a fan foundation are guaranteed.
The damping plate 1 is made of steel plates or corrosion-resistant materials with certain strength, the damping plate 1 needs to have certain strength due to certain impact resistance, and the fan foundation is placed in seawater, so that the seawater has certain corrosivity on the fan foundation, and the fan foundation needs to have corrosion resistance.
The counterweight 4 is made of concrete or a material with a larger specific gravity, and the cost is low.
The top baffle 7 can be made of thin-wall and light materials, and the top baffle 7 mainly plays a role in rain prevention and seawater, so that the requirement on the strength of the top baffle is relatively low, and the top baffle can be made into a thin-wall and light structure, so that the top baffle is convenient to carry and mount.
After the top baffles 7 of the small floating bodies are fixedly connected together, the whole formed by the small floating bodies is a plane.
The above description is only for the purpose of illustrating the present invention and the appended claims are not to be construed as limiting the scope of the invention, and any person skilled in the art can make equivalents or changes in the technical solutions and concepts of the present invention within the technical scope of the present invention.
Claims (10)
1. The utility model provides a float offshore wind turbine basis of formula which characterized in that: the floating body is characterized by comprising a floating body, wherein a damping plate (1) extending downwards is arranged on the periphery of the floating body, a plurality of anchor chains (2) are further arranged at the bottom of the floating body, a cylinder (3) penetrating the top and the bottom of the floating body is arranged at the center of the floating body, the floating body is composed of a plurality of small floating bodies distributed along the axis of the cylinder (3), the inside of each small floating body is of a cavity structure, and a counterweight (4) is loaded in a cavity inside the floating body.
2. The floating offshore wind turbine foundation of claim 1, wherein: the cross section of the floating body is in a semi-elliptical shape, the plane of the floating body is in a circular shape, the small floating body comprises an arc-shaped bottom plate (5), two sides of the arc-shaped bottom plate (5) are respectively provided with 1 vertical partition plate (6), and the top of each vertical partition plate (6) is fixed with a top baffle (7).
3. The floating offshore wind turbine foundation of claim 2, wherein: when the adjacent 2 small floating bodies are assembled and fixed, the splicing seams at the tops of the adjacent 2 small floating bodies are provided with longitudinal beams (8), the bottoms of the longitudinal beams (8) are supported on the vertical partition plates (6), the tops of the longitudinal beams are fixedly provided with top baffle plates (7), and the two ends of the top baffle plates are respectively fixedly connected with the cylinders (3) and the damping plates (1).
4. A floating offshore wind turbine foundation according to claim 3, characterised in that: the bottom of each top baffle (7) is also fixedly provided with a horizontal connecting rod (9), and the two ends of the horizontal connecting rod (9) are respectively fixedly connected with 2 longitudinal beams (8) on the two sides of each top baffle (7).
5. A floating offshore wind turbine foundation according to claim 3, characterised in that: the bottom of the longitudinal beam (8) is fixedly connected with an arc-shaped bottom plate (5) below the longitudinal beam through a vertical connecting rod (10).
6. The floating offshore wind turbine foundation of claim 1, wherein: the damping plate (1) is arranged in an inclined outer side, the included angle between the damping plate and the vertical direction is 10-20 degrees, and the inner wall of the damping plate is fixedly connected with the outer wall of the arc-shaped bottom plate (5) through an inclined supporting rod (11).
7. The floating offshore wind turbine foundation of claim 1, wherein: the damping plate (1) is made of steel plates or corrosion-resistant materials with certain strength.
8. The floating offshore wind turbine foundation of claim 1, wherein: the counterweight (4) is made of concrete or a material with a larger specific gravity.
9. The floating offshore wind turbine foundation of claim 2, wherein: the top baffle (7) may be a thin-walled, lightweight material.
10. The floating offshore wind turbine foundation of claim 2, wherein: after the top baffles (7) of the small floating bodies are fixedly connected, the formed whole is a plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110691534.3A CN113236502A (en) | 2021-06-22 | 2021-06-22 | Floating type offshore wind turbine foundation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110691534.3A CN113236502A (en) | 2021-06-22 | 2021-06-22 | Floating type offshore wind turbine foundation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113236502A true CN113236502A (en) | 2021-08-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110691534.3A Pending CN113236502A (en) | 2021-06-22 | 2021-06-22 | Floating type offshore wind turbine foundation |
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| CN (1) | CN113236502A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116084371A (en) * | 2023-02-02 | 2023-05-09 | 中国电建集团贵阳勘测设计研究院有限公司 | Offshore wind power installation platform |
-
2021
- 2021-06-22 CN CN202110691534.3A patent/CN113236502A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116084371A (en) * | 2023-02-02 | 2023-05-09 | 中国电建集团贵阳勘测设计研究院有限公司 | Offshore wind power installation platform |
| CN116084371B (en) * | 2023-02-02 | 2024-05-24 | 中国电建集团贵阳勘测设计研究院有限公司 | Offshore wind power installation platform |
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