CN206554109U - A kind of three column semi-submersible type offshore wind turbine foundations - Google Patents
A kind of three column semi-submersible type offshore wind turbine foundations Download PDFInfo
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- CN206554109U CN206554109U CN201621266084.4U CN201621266084U CN206554109U CN 206554109 U CN206554109 U CN 206554109U CN 201621266084 U CN201621266084 U CN 201621266084U CN 206554109 U CN206554109 U CN 206554109U
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Abstract
The utility model provides a kind of three columns semi-submersible type offshore wind turbine foundation, develop and service for wind energy on the sea, including three vertical columns being triangularly arranged, column air draght accounts for basic total high by 1/3 ~ 1/4, wind-driven generator is arranged at the top of head tree, and bottom is connected head tree with time columns of periphery two respectively by floating drum under water, and two floating drum angles are between 60 ° ~ 90 °, structure type is terse, and Path of Force Transfer is clear.Column inner hollow and setting ribbed stiffener, ballast cabin.Windlass is set on the deck of three columns, and shaft fixes chock, and tension force muscle is connected with the outside ballast in seabed.By adjusting the exposure level of outside suspension ballast and sea bed, the angle of inclination of blower foundation system is controlled, it is ensured that efficient wind energy is gathered.Basis uses stretched wire mooring, is connected with the pull-type anchor in seabed.
Description
Technical field
The utility model belongs to wind power generation field, is related to a kind of floating type offshore wind turbine base.
Background technology
Progressively exhausted new direction --- the offshore wind farm that the sight of the mankind has been transferred to clean energy resource of land wind-resources.
Offshore wind farm has the advantages such as wind speed is high, electricity is big, stable, suitable large-scale development, and offshore wind energy resource is most abundant
The southeastern coastal areas, adjoin the big developed area of need for electricity, it is possible to achieve electricity consumption digests nearby, reduction convey into
This, development potentiality is huge.It is estimated that the energy benefits of offshore wind energy resource are higher by 20% to 40% than land wind-powered electricity generation.
It is more than 40 meters of deep water marine environment for the depth of water, the blower foundation economy of floatation type is more preferable.With offshore wind turbine
Immobilizing foundation compare, the advantage of floatation type blower foundation includes：
(a) limited small by the depth of water, wind field address is chosen more flexible；
(b) off-lying sea windward stock number is more sufficient, matter is higher；
(c) the Attention problems technique of blower fan, buoyant foundation and mooring anchor is simple, and most of construction can be completed at harbour；
(d) influenceed small by seabed foundations condition, shaping scheme is portable high；
(e) visual pollution of the off-lying sea elimination to coastal waters landscape can be arranged on.
At present, the ocean platform technology of petroleum industry is relied on, three kinds of floating blower foundations are primarily present：Single column
(Spar), tension leg type (Tension-Leg Platform, TLP), semisubmersible-type (Semi-Submersible).
Single column foundation structure is simple, but in order to provide enough restoring moments and stability, need to lower the center of gravity and larger eat
Water depth, it swashs outside vertical wave, and power is smaller, and with preferable heaving stability, but less water plane area can not contribute horizontal stroke
Shake and pitching both direction stability, the tilting moment of blower fan will reduce base fixed and fan efficiency.
The buoyant foundation of tension leg type has extraordinary heaving and rotates stability, but tension leg cost is high, install complicated,
Tidal fluctuations can also influence Tensity size in mooring leg, and the same frequency coupled vibrations of superstructure and tension leg system all causes this
Class system is difficult to design and construction.
Larger return can be but provided by the stable semi-submersible type multicolumn platform Area of Water Plan smaller (material province) of scattered cylinder
Multiple torque, on the premise of economy is ensured, platform stabilization is best.In addition, the construction and installation of the basis and blower fan can be
Harbour is completed, and towage to sea turn anchors fixed off field.
Analyzed based on more than, the floating blower concept design proposed in the world is a lot, but has built the floating of operation at present
Offshore wind turbine majority employs the steady formula partly latent basis of post, including the Windfloat by Principle Power companies and Japan
2MW Mirai and 7MW Shimpuu in Fukushima Forward projects.
Windfloat is to design offshore floating type blower foundation product by Principle Power companies.Built in 2011
Full-scale prototype is arranged on bank 5km off sea Portugal marine site, a 2MW blower fan is mounted with thereon, trial operation is after 1 year
Generated energy be 3GWh.The platform is made up of the rod member of symmetrical three pillar type columns and connection, and three pillar type column bottoms are provided with
Water squeezing plate, it is similar with column truss type platform.Assembling is on a column, and each pillar type column bottom is provided with constant pressure
Water tank is used for reducing floating body center, improves stability.When to flow change of the wind, pass through the closed loop testing pump three of active control
The water ballast weight of floating drum can also improve the stability of system, suppress vibration.
Fukushima Forward project first stage (2011-2013) include building the 2MW post of semi-submersible type four drift
Floating blower fan.Fukushima Mirai are designed using full steel structure, employ high-quality steel to improve platform anticorrosion and resist tired
Labor characteristic, the m of 2MW fan rotors diameter 80 installed thereon, hub height is from water surface 65m, and basic platform is highly 32m, drinking water
About 16m, using the steel mooring rope of 6 catenary suspension type continuous vulcanizations.It is cylinder to change four root posts in foundation structure, and surrounding cylindrical bottom is outside
Extension, serves the effect of heave plate, and bottom floating drum section is larger there is provided buoyancy and to lower the center of gravity.
Fukushima Forward projects second stage (2014-2015) includes building 7MW floatation type blower fan
Fukushima Shimpuu, are manufactured using steel, V-type three pillar type platform, column rectangular cross-section.
The design of offshore floating type blower foundation can not be carried out fully according to ripe oil gas Offshore Platform Design method.One
Aspect, the weight (700ton) of a 5MW blower fan is about the 1/10th even more small of general ocean platform superstructure weight,
Therefore dynamic response of the floating blower foundation under action of wave force will be bigger.On the other hand, the drilling well and oil transportation of ocean platform
Riser can not bear larger vertical deformation, therefore most important to the suppression of heaving, and wave the safety fortune to platform
Battalion's influence is smaller.Offshore wind turbine is to the hydrodynamic characterisitic requirement of buoyant foundation platform on the contrary, heaving is adopted for blower fan
It can influence little, only sufficiently small pitching and rolling free degree dynamic response just can guarantee that the high-efficiency operation of blower fan.
Utility model content
In order to solve the wind energy on the sea Utilizing question of 40 meters of -200 meters of depth of waters, the utility model provides a kind of three column half
Submersible offshore wind turbine foundation, structure type is terse, and Path of Force Transfer is clear, can use high strength steel or cast-in-place high-strength concrete
Build, be adapted to, more than sustainable current main flow 5MW rank blower fan, it is ensured that normal assembled in bank shallow-water port Wharf Construction
Structural strength and wind energy transformation efficiency that operation, the limit are left certainly.
Buoyant foundation includes three vertical columns being triangularly arranged in the utility model, and wind-driven generator is arranged on master
At the top of column, bottom is connected head tree with the column of periphery two times respectively by floating drum under water.With assembling in geometric center
Four column bases compare, the basic advantage of eccentric three columns semi-submersible type of the present utility model and originality include：A) basis knot
Structure is simpler, and materials'use is more saved, and cost is lower；B) it is directed to the foundation structure feature chi needed for the 5MW blower fans of current main flow
Very little, the heaving cycle dramatically increases, and avoids the wave period of 17 seconds or so, and the limit for improving system deposits ability certainly；C) wind is worked as
When machine is arranged on a certain root post on three pillar type basis, the asymmetry of structure by the stability difference made under different directions compared with
Greatly, basic center of gravity but is reasonably adjusted, setting angle is selected by wind meteorological data, the anchorage that basis offer can be made bigger
Square；D) a set of outside ballast regulating system of the utility model design, can continuously adjust knot in time in change of the wind
Structure center of gravity, controls the angle of inclination of blower fan, it is ensured that generating efficiency.
As further improvement of the utility model, three vertical columns for not arranging collinearly, column air draght is accounted for
It is total high by 1/3~1/4；
It is connected at the top of head tree (1) with the tower (8) of wind-driven generator, bottom passes through floating drum (3) to head tree (1) under water
It is connected respectively with the column (2) of periphery two times, two floating drums (3) angle is between 60 °~90 °；
Time columns (2) of column (1) and two and floating drum (3) section are the circular or rectangle with rounded corner or just polygon
Shape, surface sets groove, inner hollow and setting ribbed stiffener, ballast cabin；
Internal solids and/or liquid ballast thing are placed in column (1) and two columns (2)；
Windlass (12) is set on the deck of column (1) and two columns (2), and shaft fixes chock (11), tension force muscle
(5) it is connected with the outside ballast (4) in seabed；In addition,
Basis is using stretched wire mooring (6), and its seabed end is connected with the pull-type anchor being fixed on sea bed.Column and floating drum are adopted
With rectangle or equilateral polygon section circular or with rounded corner, the floating drum only passed through under water between column is connected.
As further improvement of the utility model, column and floating drum are using the circular or rectangle with rounded corner or just many
Only connected between side tee section, column by floating drum under water.
As further improvement of the utility model, assembling on head tree, rather than three columns geometric center position
Put, blower fan-basic system has obvious asymmetry.
As further improvement of the utility model, under job state, blower fan thrust caused by different wind speed is different, wind
The angle of inclination of machine is also different, by surveying arrives stream wind speed and wind direction, using windlass and fairlead, and three columns of control hang in real time
The outside ballast and the exposure level of sea bed of extension, Mass Distribution, center of gravity and the hull position of active regulating system, to reach suppression
The integral inclined purpose of system processed.
As further improvement of the utility model, in the limit from depositing under state, according to wind direction, make outside ballast complete
Depart from or sink on sea bed, reduce system gravity, suppress swinging and waving for basis, raising security of system.
In addition, as further improvement of the utility model, foundation structure can use high strength steel or cast-in-place
High-strength concrete is built, and during using concrete material, reserving hole channel provides prestressing force by post stretching for structure.
As further improvement of the utility model, based on floating body stability and hydrodynamics general principle, column and floating drum
Can be using circular or rectangle or equilateral polygon section with rounded corner.
As further improvement of the utility model, leg surface is provided with vertical groove, and pontoon surface is provided with level
To groove, wave absorption energy dissipating can be played, increase damping suppresses vortex-induced vibration.
As further improvement of the utility model, multiple cabins are provided with column and floating drum, for depositing inside
Solid-liquid body ballast.The initial mass and initial position of the internal ballast of regulation, make blower fan inclination angle in the big of wind speed meteorological statistics
It is zero near probable value.
As further improvement of the utility model, primary and secondary column, which is respectively provided with, safeguards that ship anchor point and upper deck are helped
Ladder.
As further improvement of the utility model, under job state, height of the basis on the water surface is more than 10 meters, it is to avoid
Upper wave causes Fan Equipment immersion destruction.
As further improvement of the utility model, anchoring system uses stretched wire shape mooring, it is ensured that the position of system is kept,
Do not drift about.
Brief description of the drawings
In conjunction with the following drawings and embodiment description, advantage of the present utility model and originality can be made to become apparent from and be easy to
Understand, wherein：
Fig. 1 is the utility model --- the isometric views of three column semi-submersible type offshore wind turbine foundations；
Fig. 2 is the utility model --- the side view of three column semi-submersible type offshore wind turbine foundations；
Fig. 3 is the detailed structure view of balance control system in the utility model.
Embodiment
Illustrate below in conjunction with the accompanying drawings, by taking 5MW trunnion axis blower fans as an example, embodiment of the present utility model is described in detail.
The utility model proposes the offshore wind turbine foundation of a set of 40 meters of -200 meters of depth of waters, air force is fully applied
, structural mechanics and principles of hydrodynamics, are characterized in simple in construction, and power transmission is clear, and easy construction, material can be chosen because of ground,
Stable working state, deposits ability strong certainly.
Fig. 1 is the utility model --- the isometric views of three column semi-submersible type offshore wind turbine foundations, accompanying drawing 2 is that this practicality is new
Type --- the side view of three column semi-submersible type offshore wind turbine foundations.Three columns semi-submersible type offshore wind turbine foundation bag of the present utility model
Three vertical columns not arranged collinearly (1) and (2) are included, column total height is about 30 meters -40 meters.
As shown in Figures 1 to 3, it is connected at the top of head tree (1) with the tower (8) of wind-driven generator, blower fan also includes cabin
And the critical component such as blade (10) (9).Head tree (1) under water bottom by floating drum (3) respectively with time column (2) phases of periphery two
Connect, and two columns are not joined directly together.Two floating drums (2) angle between 60 °~90 °, can according to target marine site stormy waves it is long-term
Weather observation data, the size of the optimization design angle.
Column (1) and (2) and floating drum (3) section are circular or rectangle or regular polygon with rounded corner, the choosing in section
Balance need to be obtained between hydrodynamic load and structure reactance by taking.Its central post is smaller using circular cross-section hydrodynamic load, but can
Vortex-excited vibration can be caused to destroy.Vertical groove is opened up using cylinder wall in the utility model, regular vortex can be avoided to come off
The generation of phenomenon.Floating drum (3) is set to the square-section with rounded corner, improves the anti-bending strength in section, surface set level to
Groove, can play wave absorption energy dissipating, suppress vortex-induced vibration, increase damping, reduce swinging and waving for basis.
Column (1) and (2) and floating drum (3) inner hollow and setting ribbed stiffener, it is to avoid local buckling occurs for structure.Pressure is set
Loading cabin, for depositing internal solid-liquid body ballast, it is ensured that the watertightness between cabin, it is ensured that when contingency causes damage
Overall stability.By adjusting the initial mass and initial position of internal ballast, make the overall inclination angle on blower fan-basis in wind speed
It is zero near the greatest of meteorological statistics, makes in the case where never calling outside ballast balance control system, blower fan still can
Maximal efficiency works.
Windlass (12) is set on the deck of column (1) and (2), and shaft fixes chock (11), tension force muscle (5) and seabed
Outside ballast (4) is connected.By unified balance control system, with reference to actual measurement arrives stream wind speed and wind direction, control three in real time is stood
The outside ballast of post suspension and the exposure level of sea bed, Mass Distribution, center of gravity and the hull position of active regulating system, control
System is integral inclined as small as possible.
Under job state, outside ballast is sunk completely on sea bed as far as possible, individually control the pressure on a certain column
Loading, makes basic balance, it is to avoid the fatigue rupture of tension force muscle (5).
In the limit from depositing under state, according to wind direction, outside ballast is set to completely disengage from or sink on sea bed, reduction system
Unite center of gravity, suppress swinging and waving for basis, raising security of system.
Be respectively provided with primary and secondary column (1) and (2) and safeguard ship anchor point and upper deck staircase (7), be easy to blower fan and
The maintenance and maintenance of basic operating facilities.Air draght account for it is total high by 1/3~1/4, generally higher than 10 meters, it is to avoid upper wave causes wind
Machine equipment immersion destruction.
Basis is connected using stretched wire mooring (6), its seabed end with the pull-type anchor being fixed on sea bed, it is ensured that the position of system
Holding is put, is not drifted about.
The use high strength steel or cast-in-place high-strength concrete that foundation structure can suit measures to local conditions are built, using concrete material
During material, reserving hole channel provides prestressing force by post stretching for structure.After construction and maintenance is finished in dry dock, assembled blower fan is put
Water and towage are to target place.
Above content is to combine specific preferred embodiment further detailed description of the utility model, it is impossible to
Assert that specific implementation of the present utility model is confined to these explanations.For the ordinary skill of the utility model art
For personnel, without departing from the concept of the premise utility, some simple deduction or replace can also be made, should all be regarded
To belong to protection domain of the present utility model.
Claims (7)
1. a kind of three columns semi-submersible type offshore wind turbine foundation, it is characterised in that the basis includes：
Three vertical columns for not arranging collinearly, column air draght accounts for total high by 1/3 ~ 1/4；
In head tree（1）Top and the tower of wind-driven generator（8）It is connected, head tree（1）Bottom passes through floating drum under water（3）Respectively
With the column of periphery two times（2）It is connected, two floating drums（3）Angle is between 60 ° ~ 90 °；
Column（1）With two columns（2）And floating drum（3）Section is circular or rectangle or regular polygon with rounded corner, table
Face sets groove, inner hollow and setting ribbed stiffener, ballast cabin；
Column（1）With two columns（2）Middle placement internal solids and/or liquid ballast thing；
Column（1）With two columns（2）Deck on windlass is set（12）, shaft fixation chock（11）, tension force muscle（5）With
The outside ballast in seabed（4）It is connected；In addition, basis uses stretched wire mooring（6）, its seabed end and the towing being fixed on sea bed
Formula anchor is connected.
2. semi-submersible type offshore wind turbine foundation according to claim 1, it is characterised in that：Foundation structure can use high strength steel
Material or cast-in-place high-strength concrete are built, during using concrete material, and reserving hole channel is provided for structure by post stretching and in advance should
Power.
3. semi-submersible type offshore wind turbine foundation according to claim 1, it is characterised in that：Column and floating drum using circular or
Only connected between rectangle or equilateral polygon section with rounded corner, column by floating drum under water.
4. semi-submersible type offshore wind turbine foundation according to claim 1, it is characterised in that：Leg surface is provided with vertical recessed
Groove, pontoon surface is provided with level to groove.
5. semi-submersible type offshore wind turbine foundation according to claim 1, it is characterised in that：Assembling on head tree, and
The geometric center position of non-three column, blower fan-basic system has obvious asymmetry.
6. semi-submersible type offshore wind turbine foundation according to claim 1, it is characterised in that：It is provided with column and floating drum many
Individual cabin.
7. semi-submersible type offshore wind turbine foundation according to claim 1, it is characterised in that：Primary and secondary column is respectively provided with maintenance
Ship anchor point and upper deck staircase（7）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621266084.4U CN206554109U (en) | 2016-11-22 | 2016-11-22 | A kind of three column semi-submersible type offshore wind turbine foundations |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621266084.4U CN206554109U (en) | 2016-11-22 | 2016-11-22 | A kind of three column semi-submersible type offshore wind turbine foundations |
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| CN206554109U true CN206554109U (en) | 2017-10-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621266084.4U Expired - Fee Related CN206554109U (en) | 2016-11-22 | 2016-11-22 | A kind of three column semi-submersible type offshore wind turbine foundations |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107738730A (en) * | 2017-09-06 | 2018-02-27 | 哈尔滨工业大学深圳研究生院 | A kind of three column semi-submersible type offshore wind turbine foundations |
| CN108146588A (en) * | 2017-12-20 | 2018-06-12 | 夏尔特拉(江苏)新能源科技有限公司 | Floating marine formula wind power foundation structure |
| CN113548157A (en) * | 2021-09-01 | 2021-10-26 | 上海电气风电集团股份有限公司 | Tension leg floating type fan foundation system |
| CN113619741A (en) * | 2021-07-30 | 2021-11-09 | 华南理工大学 | Variable cross-section three-column type offshore floating wind power foundation |
| CN114044091A (en) * | 2021-12-17 | 2022-02-15 | 中交第一航务工程局有限公司 | Floating type water foundation |
| CN114408110A (en) * | 2021-12-31 | 2022-04-29 | 宁波大学 | Strong wind resistant fully-submersible wind power platform |
| CN114483471A (en) * | 2021-12-28 | 2022-05-13 | 明阳智慧能源集团股份公司 | Semi-submersible foundation structure of floating double-fan wind generating set and installation method thereof |
-
2016
- 2016-11-22 CN CN201621266084.4U patent/CN206554109U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107738730A (en) * | 2017-09-06 | 2018-02-27 | 哈尔滨工业大学深圳研究生院 | A kind of three column semi-submersible type offshore wind turbine foundations |
| CN108146588A (en) * | 2017-12-20 | 2018-06-12 | 夏尔特拉(江苏)新能源科技有限公司 | Floating marine formula wind power foundation structure |
| CN113619741A (en) * | 2021-07-30 | 2021-11-09 | 华南理工大学 | Variable cross-section three-column type offshore floating wind power foundation |
| CN113548157A (en) * | 2021-09-01 | 2021-10-26 | 上海电气风电集团股份有限公司 | Tension leg floating type fan foundation system |
| CN114044091A (en) * | 2021-12-17 | 2022-02-15 | 中交第一航务工程局有限公司 | Floating type water foundation |
| CN114483471A (en) * | 2021-12-28 | 2022-05-13 | 明阳智慧能源集团股份公司 | Semi-submersible foundation structure of floating double-fan wind generating set and installation method thereof |
| CN114408110A (en) * | 2021-12-31 | 2022-04-29 | 宁波大学 | Strong wind resistant fully-submersible wind power platform |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171013 Termination date: 20201122 |