CN106609511B - A kind of semi-fixed type offshore wind turbine foundation - Google Patents
A kind of semi-fixed type offshore wind turbine foundation Download PDFInfo
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- CN106609511B CN106609511B CN201611072916.3A CN201611072916A CN106609511B CN 106609511 B CN106609511 B CN 106609511B CN 201611072916 A CN201611072916 A CN 201611072916A CN 106609511 B CN106609511 B CN 106609511B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/42—Foundations for poles, masts or chimneys
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Abstract
The invention discloses a kind of semi-fixed type offshore wind turbine foundations, including wind turbine, tower, floating drum, tensioning line and half stationary of bottom basis, the upper end vertical direction of the wind turbine and sleeve is arranged, the lower end of the sleeve and the upper end vertical direction of floating drum are arranged, and the tower is in floating drum on a straight line；The lower end of the floating drum is arranged on the vertical direction of bottom semi-fixed type basis, and one end of several tensioning lines and the top of floating drum connect, and the other end of several tensioning lines is uniformly distributed centered on floating drum with sea bed respectively to be connect.The present invention can effectively reduce complete machine motion amplitude, solve the problems such as difficult using fixed foundation construction, cost is high, basis is unstable in transition marine site.
Description
Technical field
The present invention relates to Offshore Wind Power Generation Technology field, be related to it is a kind of between the fixed basis with floatation type half
Fixed offshore blower foundation form.
Background technology
So far, the floatation type wind turbine research in China is still in infancy.And the development of marine wind electric field, it is more at present
Positioned at the shallow sea of the 0-30 meters of depth of water, apart from seashore within 20km, such as Xiangshui County's wind power plant, Donghai Bridge wind power plant, wind turbine are equal
Using fixed basis.And it is shown according to newest China Meteorological Administration's offshore wind speed investigation result, China's 5m to 25m water depth lines
Within greater coasting area, the above 50m height wind-powered electricity generation installed capacity in sea level be about 200,000,000 kW, the transition region within 25m to 50m
Domain, above 70m or more the installed capacities in sea level are about 500,000,000 kW, and the blue water wind energy resources more horn of plenty of 100m or more.
The marine sites more than 30 meters of depth of waters, wind energy are not yet exploited, and the wind energy in order to further develop off-lying sea marine site develops floatation type
Basis has become certainty, however floatation type stability of foundation is insufficient.
Floatation type basis applies in general to off-lying sea marine site or the sea water advanced marine site more than 50m or more, due to it is fixed with
Floatation type has the waters scope of application of itself, and the depth of water marine site of 50m or so is using fixed basis and floatation type basis
One separation, either using fixed basis or floatation type basis, foundation cost is relatively high, adopts in waters in this section
It is more difficult with fixed foundation construction.
Compared with the fixed foundation structure form in shallow sea, there is apparent advantage for deep-sea marine site floatation type basis.Mesh
Preceding floatation type base form has Spar formulas, tension leg type, semi-submersible type etc., but there are the advantage and disadvantage of itself on various floatation type bases.
Spar formulas buoyant foundation is made of central rods, buoyancy compartment, ballast tank, anchoring system since center of gravity is less than centre of buoyancy, can
To ensure the stability on basis.Advantage：Area of Water Plan is small influenced by wave load it is small；Disadvantage：Submerged structure absorbs water deep, consumptive material
More, uneconomical while catenary is inadequate to the rigidity of rolling pitching surging swaying, this structure is only applicable to 120 meters or more waters
The exploitation of wind energy, the applicable depth of water are restricted.
Semi-submersible type buoyant foundation is mainly made of column, crossbeam, diagonal brace, buoyancy tank and anchoring system.Advantage：This form basis
With larger water plane area, restoring moment is big, and stability is good；Disadvantage：Large scale spar structures by larger seaway load,
Foundation structure bulky is uneconomical.
The platform base for floating on sea is mainly fixed on the pedestal in seabed by tension leg type buoyant foundation by tension tendon,
It is big when making the drinking water of floating body than static balance by tightening tension muscle key, therefore buoyancy is more than floating body gravity, the surplus buoyancy is by muscle
The tension of key is balanced, and the stabilization of entire blower fan structure is kept.Advantage：Tension leg type buoyant foundation have good heaving and
Oscillatory characteristic；Disadvantage：Tension leg is complicated, expensive, and installation cost is high.
Have in many floatation type base applications to wind-power electricity generation in world wide at present, but because of technology restriction, cost
The reasons such as costliness, floatation type basis load-bearing complexity fail to obtain popularization energetically as fixed basis.
The exploitation wind energy on the sea of China energetically at present, deep-sea field, which does not have started, to be related to, with to sea point energy
Exploitation, inherently moves towards deep-sea, how to draw external experience, and a kind of offshore foundation form that can ensure that wind turbine is stablized of exploitation is
The significant technology issues to be solved at present.
Therefore, for the marine wind energy resource for making full use of China wide, building can be to the excellent of blue water development
Base form needs the advantage in conjunction with various floatation types basis to abandon disadvantage, research and development one kind is economic and practical, small by wave load,
The dynamic response excellent marine novel fan basis such as small.
Invention content
Goal of the invention：In order to overcome the deficiencies in the prior art, the present invention to provide a kind of semi-fixed type offshore wind turbine
Basis can effectively reduce complete machine motion amplitude, solve, cost height difficult using fixed foundation construction in transition marine site, base
The problems such as plinth is unstable.
Technical solution：To achieve the above object, technical scheme is as follows：
A kind of semi-fixed type offshore wind turbine foundation, including wind turbine, tower, floating drum, tensioning line and half stationary of bottom basis, institute
The upper end vertical direction for stating wind turbine and sleeve is arranged, and the lower end of the sleeve and the upper end vertical direction of floating drum are arranged, the tower
Cylinder is in floating drum on a straight line；The lower end of the floating drum is arranged on the vertical direction of bottom semi-fixed type basis, several described
The top of one end and floating drum for being tensioned line connects, and the other end of several tensioning lines is uniform with sea bed centered on floating drum respectively
Distribution connection.
Further, suction caisson foundation centered on bottom semi-fixed type basis, the center suction caisson foundation
It is arranged using hinged setting or universal joint with floating drum bottom.
Further, the other end of four tensioning lines is respectively by periphery suction caisson foundation centered on floating drum
It is uniformly distributed and connect with seabed bed.
Further, bottom semi-fixed type basis is truss basis, and the truss basis includes central cam cone purlin
Frame pedestal and periphery suction caisson foundation, the floating drum is vertical with English truss pedestal to be fixedly installed, and the floating drum
Bottom is located at the bottom center of English truss pedestal, and the Extension support that the extension at three ends angle of the English truss pedestal comes out divides
It is not correspondingly connected with periphery suction caisson foundation, English truss pedestal is with periphery suction caisson foundation using hinged, the week
Side suction caisson foundation is along uniform as the center of circle using the extended line of the longitudinal centre line of blower foundation and the intersection point in sea bed face
It is arranged in sea bed.
Further, the truss foundation bottom is provided with center suction caisson foundation.
Further, hinged joint and fairlead, the English truss bottom are provided on the periphery suction caisson foundation
The Extension support that three ends angle of seat extends out is connect with hinged joint, the other end and periphery suction caisson base of the tensioning line
It is connected by fairlead between plinth.
Further, lower buoy structure cross-section dimensions can be more than tower cross-sectional area.
Advantageous effect：1, a kind of semi-fixed type offshore wind turbine foundation provided by the invention, combines fixed and floatation type
The advantage on basis, it is marine site blower foundation selection issue between 50 meters to 100 meters to solve the depth of water well.
2, half stationary blower foundation, wind turbine system lower buoy, using being hinged, ensure the vertical of wind turbine with suction caisson
Stability avoids the motion outside planes such as surging, pitching, yawing, the heaving of floatation type basis generation.And it is protected by anchoring system
The horizontal stability of wind turbine is demonstrate,proved, ensures the power generation of wind turbine normal operation.
3, the semi-fixed type blower foundation is suitable for the depth of water similar to Spar formula blower foundations, Spar formula blower foundations
120 meters with headwater depth marine site, which does not set ballast tank, and floating drum underwater penetration is adjusted according to sea water advanced, be applicable in
In 50 meters to marine site between 100 meters.Buoyancy suffered by lower buoy can conduct oneself with dignity with wind turbine system to balance each other, and can also be slightly larger than wind
The dead weight of body system is slightly less than the dead weight of wind turbine system.
4, in order to further ensure truss is arranged in floating drum lower part in the stability of wind turbine, truss serves as the pedestal of wind turbine, then
Ensure the stability of wind turbine by least three tensioning lines.The stability of wind turbine is carried jointly by truss pedestal and the mooring line of tensioning
For so the stability of wind turbine can be ensured very well.
Description of the drawings
Fig. 1 is the structural schematic diagram of the first semi-fixed type blower foundation provided in an embodiment of the present invention；
Fig. 2 a are the structural schematic diagrams of second of semi-fixed type blower foundation provided in an embodiment of the present invention；
Fig. 2 b are the structural schematic diagrams of the third semi-fixed type blower foundation provided in an embodiment of the present invention；
Fig. 3 is the structural schematic diagram of the periphery suction caisson foundation of Fig. 1；
Fig. 4 is the structural schematic diagram of the periphery suction caisson foundation of Fig. 2.
Specific implementation mode
The present invention is further described below in conjunction with the accompanying drawings.
A kind of semi-fixed type offshore wind turbine foundation, including wind turbine 11, tower 12, floating drum 13, tensioning line 21 and bottom half are solid
Formula basis, the wind turbine 11 and the upper end vertical direction of sleeve 12 are arranged, and the lower end of the sleeve 12 is perpendicular with the upper end of floating drum 13
Histogram is in floating drum 13 on a straight line to setting, the tower 12；The lower end of the floating drum 13 and bottom semi-fixed type basis
Be arranged on vertical direction, it is several it is described tensioning lines 21 one end connect with the top of floating drum 13, it is several it is described be tensioned lines 21 it is another
One end is uniformly distributed with sea bed centered on floating drum 13 connect respectively.
Such as attached drawing 1, suction caisson foundation 231 centered on bottom semi-fixed type basis, the center suction caisson base
Plinth 231 is arranged with 13 bottom of floating drum using hinged setting or universal joint.
As the other end of attached drawing 2a, the tensioning line 21 are respectively with floating drum 13 by periphery suction caisson foundation 232
Center is uniformly distributed with seabed bed and connect, and the tensioning line 21 is four.Further, bottom semi-fixed type basis is purlin
Frame basis 24, the truss basis 24 includes that central cam bores truss pedestal and periphery suction caisson foundation 232, described floating
Cylinder 13 is vertical with English truss pedestal to be fixedly installed, and the bottom of the floating drum 13 is located at the bottom center of English truss pedestal,
The Extension support of the extension at three ends angle of the English truss pedestal out is connected respectively periphery suction caisson foundation
232, the periphery suction caisson foundation 232 is along with the intersection point of the extended line of the longitudinal centre line of blower foundation and sea bed face
Uniformly it is arranged in seabed for the center of circle.
Such as attached drawing 2b, basic 24 bottoms of the truss are provided with center suction caisson foundation 231.
Such as attached drawing 3 and 4, it is provided with hinged joint 22 and fairlead 25 on the periphery suction caisson foundation 232, described three
The Extension support that three ends angle of angle truss pedestal extends out is connect with hinged joint 22, the other end of the tensioning line 21 and periphery
It is connected by fairlead 25 between suction caisson foundation 22.
Specific embodiment：As shown in Figure 1, the semi-fixed type offshore wind turbine foundation of exemplary embodiment according to the present invention by
Wind turbine 11, tower 12, floating drum 13, tensioning line 21 and center suction caisson foundation 231 form.Wind turbine lower buoy 13 and suction
Formula caisson foundation 23 is hinged, it is ensured that the vertical stability of wind turbine.Using four tensioning lines 21, described four are opened positioning system
One end of stringing 21 is connected respectively to 13 top of floating drum, and the other end of four tensionings line passes through periphery suction caisson respectively
Basis 232 is connected to sea bed, makes blower foundation stress balance, keeps the stability of wind turbine.
The semi-fixed type offshore wind turbine foundation of above-mentioned exemplary embodiment according to the present invention, 13 bottom of floating drum and center
Suction caisson 231 combines wind turbine using the formula that is completely fixed and both base forms of complete floatation type, the hinge using being hinged
Node 22 or universal joint form (being omitted in figure, be not shown).
The semi-fixed type offshore wind turbine foundation of the exemplary embodiment of aforementioned present invention, the blower foundation is similar to Spar formulas
Blower foundation, but the blower foundation does not set ballast tank, and buoyancy can balance each other with the dead weight of wind turbine system suffered by lower buoy 13.Its
Buoyancy suffered by middle floating drum may be slightly larger than the dead weight of wind turbine system, can also be slightly less than the dead weight of wind turbine system, superfluous buoyancy or buoyancy are not
Vertical counter-force can be provided when sufficient by floating drum and the hinged joint 22 of suction caisson junction.
The semi-fixed type offshore wind turbine foundation of exemplary embodiment according to the present invention, one end of four tensionings line 21
It is connected respectively to 13 top of floating drum, the other end of four tensionings line 21 is connected by periphery suction caisson foundation 232 respectively
It is connected to sea bed, makes blower foundation stress balance, keeps the stability of wind turbine.
Further, wind turbine bottom inhibits the heaving of wind turbine generation with center suction caisson 231 using being hinged,
For wind turbine when no mooring line positions, the movement of wind turbine is only the rotation occurred around hinge joint, and floatation type basis is avoided to be occurred
The movements such as surging, pitching, yawing, locating of fans system can be effectively prevented from the six of floatation type basis using four tensioning lines
The motor imagination of a degree of freedom ensures the normal operation of wind turbine.
The semi-fixed type offshore wind turbine foundation of exemplary embodiment shown in Fig. 1, lower buoy 13 slip into seabed in
Heart suction caisson foundation 231 connects, and 13 underwater penetration of floating drum makes the appropriate adjustments according to sea water advanced.The applicable depth of water is ranging from
50 to 100 meters.
Unlike semi-fixed type basis shown in Fig. 1, another exemplary according to the present invention shown in Fig. 2 a
The semi-fixed type offshore wind turbine foundation of embodiment, including wind turbine 11, tower 12, floating drum 13, tensioning line 21, truss pedestal 24 and week
Side suction caisson foundation 232 forms.Truss pedestal 24 serves as the lower seat of wind turbine, truss pedestal outermost and periphery suction
Formula caisson foundation 232 is connected, and inside is fixedly connected with lower pontoon 13.Positioning system using at least three tensioning lines 21, it is described extremely
One end of few three tensionings line 21 is connected respectively to 13 top of floating drum, and the other end of at least three tensionings line 21 passes through respectively
Periphery suction caisson foundation 232 is connected to sea bed, and tensioning line 21 ensures the stabilization of wind turbine with 24 collective effect of truss pedestal
Property.
Unlike semi-fixed type basis shown in Fig. 2 a, semi-fixed type offshore wind turbine foundation shown in Fig. 2 b,
Floating drum lower part has set a center suction caisson foundation 231 more.
The semi-fixed type offshore wind turbine foundation of exemplary embodiment shown in a according to fig. 2,24 outermost of truss pedestal
With suction caisson foundation using articulated connection, inside and the fixed connection of lower pontoon.
The semi-fixed type offshore wind turbine foundation of exemplary embodiment shown in a according to fig. 2, at least three are tensioned line 21
One end is connected respectively to 13 top of floating drum, and the other end of at least three tensionings line passes through periphery suction caisson foundation respectively
232 are connected to sea bed, and 232 basis of the periphery suction caisson is along with the extended line of the longitudinal centre line of blower foundation and sea
The intersection point of bed surface is that the center of circle is uniformly arranged in seabed.
The wind turbine lower buoy is similar to Spar formula blower foundations, but the blower foundation does not set ballast tank, lower buoy institute
It can be conducted oneself with dignity with wind turbine system by buoyancy and be balanced each other.Lower buoy structure cross-section dimensions can be slightly larger than tower cross-sectional area, rise
To certain floating effect that helps, floating drum underwater penetration makes the appropriate adjustments according to actual condition.
The semi-fixed type offshore wind turbine foundation of exemplary embodiment shown in b according to fig. 2, wind turbine bottom are equipped with truss base
Seat 24, serves as the bottom support bracket of wind turbine, to be further ensured that the stability of wind turbine, and meanwhile it is fixed using the mooring line of three tension types
Position, it is entirely avoided the movements such as surging, pitching, yawing that wind turbine is occurred ensure the normal operation of wind turbine.Although the present invention with
Describe semi-fixed type offshore wind turbine foundation for radial type and truss base type, but the type of semi-fixed type offshore wind turbine foundation
Formula is not limited to radial type and two kinds of patterns of truss base type.In addition, tensioning line not limited in three, can be according to practical feelings
Condition is adjusted them.
In conclusion semi-fixed type offshore wind turbine foundation according to the present invention it is simple and reliable for structure, it is at low cost, can be effective
Ground avoids the outer surface movement that floating marine formula wind turbine is occurred.
The above is only a preferred embodiment of the present invention, it should be pointed out that：For the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (5)
1. a kind of semi-fixed type offshore wind turbine foundation, it is characterised in that：Including wind turbine (11), tower (12), floating drum (13), tensioning
Line (21) and half stationary of bottom basis, the wind turbine (11) and the upper end vertical direction of tower (12) are arranged, the tower (12)
The upper end vertical direction of lower end and floating drum (13) be arranged, the tower (12) is in floating drum (13) on a straight line；It is described floating
The lower end of cylinder (13) is arranged on the vertical direction of bottom semi-fixed type basis, one end and the floating drum (13) of the tensioning line (21)
Top connects, and the other end of the tensioning line (21) is uniformly distributed centered on floating drum (13) with sea bed respectively to be connect；The bottom
Portion semi-fixed type basis is that truss is basic (24), and the truss basic (24) includes central cam truss pedestal and periphery suction
Formula caisson foundation (232), the floating drum (13) is vertical with English truss pedestal to be fixedly installed, and the bottom position of the floating drum (13)
In the bottom center of English truss pedestal, three Extension supports for holding angle to extend out of the English truss pedestal are corresponding respectively to be connected
Periphery suction caisson foundation (232) is connect, English truss pedestal is used with periphery suction caisson foundation (232) and is hinged, described
Periphery suction caisson foundation (232) is along using the intersection point of the extended line of the longitudinal centre line of blower fan tower barrel and sea bed face as the center of circle
It is uniform to be arranged in seabed.
2. a kind of semi-fixed type offshore wind turbine foundation according to claim 1, it is characterised in that：The tensioning line (21)
The other end is uniformly distributed with seabed bed centered on floating drum (13) by periphery suction caisson foundation (232) connect respectively.
3. a kind of semi-fixed type offshore wind turbine foundation according to claim 1, it is characterised in that：The truss is basic (24)
Bottom is provided with center suction caisson foundation (231).
4. a kind of semi-fixed type offshore wind turbine foundation according to claim 1 or 3, it is characterised in that：The periphery suction
Hinged joint (22) and fairlead (25) are provided on formula caisson foundation (232), three ends angle of the English truss pedestal extends
Extension support out is connect with hinged joint (22), the other end and the periphery suction caisson foundation (22) of the tensioning line (21) it
Between pass through fairlead (25) connect.
5. a kind of semi-fixed type offshore wind turbine foundation according to claim 1, it is characterised in that：Lower buoy (13) structure
Sectional dimension is more than tower (12) cross-sectional area.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611072916.3A CN106609511B (en) | 2016-11-29 | 2016-11-29 | A kind of semi-fixed type offshore wind turbine foundation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611072916.3A CN106609511B (en) | 2016-11-29 | 2016-11-29 | A kind of semi-fixed type offshore wind turbine foundation |
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| Publication Number | Publication Date |
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| CN106609511A CN106609511A (en) | 2017-05-03 |
| CN106609511B true CN106609511B (en) | 2018-11-06 |
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Families Citing this family (3)
| 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 |
| CN110093943A (en) * | 2019-02-27 | 2019-08-06 | 重庆大学 | A kind of novel suction cartridge type composite structure wind-power tower basis suitable for deep-sea |
| CN115478559A (en) * | 2021-05-31 | 2022-12-16 | 江苏金风科技有限公司 | Offshore wind turbine foundation and construction method thereof |
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| CN103423093A (en) * | 2013-09-03 | 2013-12-04 | 上海交通大学 | Platform floating type wind driven generator provided with suction caissons and used for sea surface of deep sea |
| CN104060625A (en) * | 2014-06-11 | 2014-09-24 | 河海大学 | Offshore wind power foundation adopting steel rods for connecting vertical pile and inclined piles |
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| WO2004055272A2 (en) * | 2002-12-17 | 2004-07-01 | Enertec Ag | Floating foundation for wind energy production and methods for constructing and using asaid floating foundations |
| CN101768978A (en) * | 2010-01-29 | 2010-07-07 | 天津大学 | At-sea wind generation unit foundation formed by barrel type foundation and mooring rope anchor |
| CN102433890A (en) * | 2011-12-22 | 2012-05-02 | 新疆金风科技股份有限公司 | Floating type offshore wind turbine base and positioning system thereof |
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