CN102269136A - Tower frame of large wind driven generator - Google Patents

Tower frame of large wind driven generator Download PDF

Info

Publication number
CN102269136A
CN102269136A CN2011102319978A CN201110231997A CN102269136A CN 102269136 A CN102269136 A CN 102269136A CN 2011102319978 A CN2011102319978 A CN 2011102319978A CN 201110231997 A CN201110231997 A CN 201110231997A CN 102269136 A CN102269136 A CN 102269136A
Authority
CN
China
Prior art keywords
pylon
concrete
driven generator
wind driven
steel
Prior art date
Application number
CN2011102319978A
Other languages
Chinese (zh)
Inventor
马宏旺
Original Assignee
上海交通大学
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 上海交通大学 filed Critical 上海交通大学
Priority to CN2011102319978A priority Critical patent/CN102269136A/en
Publication of CN102269136A publication Critical patent/CN102269136A/en

Links

Classifications

    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50Manufacturing or production processes characterised by the final manufactured product

Abstract

The invention relates to a tower frame of a large wind driven generator. The tower frame is conical and is divided into two sectors, namely an upper part and a lower part; the upper part is of a steel conical pipe structure; the lower part is of a hollow interlayer steel conical pipe concrete structure; the tower frame comprises an inner layer steel pipe and an outer layer steel pipe; concrete is filled between the inner layer steel pipe and the outer layer steel pipe; the upper part and the lower part are connected through grouting; the inner diameter of the bottom part of the upper part is greater than the outer diameter of the top part of the lower part; and grouting materials are filled in an overlapped annular clearance of the bottom part of the upper part and the bottom part of the lower part. The generator provided by the invention has the advantages of simple structure, the cost is lowered, and the generator is convenient to manufacture and transport.

Description

The large-scale wind driven generator pylon
Technical field
The present invention relates to the wind-driven generator field, particularly relate to a kind of large-scale wind driven generator pylon.
Background technique
At present, global wind-power market characteristic of development is that the wind power generating set single-machine capacity constantly enlarges, and 2-3MW level blower fan has been the main flow unit of international market, and Denmark's part wind energy turbine set is at the blower fan that uses capacity as 5MW, and the pylon height is all more than 80m.Land wind-powered electricity generation single-machine capacity has reached 6MW, and offshore wind farm has reached 10MW, and more jumbo blower fan is is researched and developed.Big capacity blower fan means the increase of blower fan weight, length of blade, acts on load increase on the pylon, just needs pylon to have bigger intensity, rigidity and height.Cause traditional steel canalis spinalis tower diameter increasing, wall thickness increases, rolled steel dosage significantly increases, when being 80m as 3MW wind-powered electricity generation machine installation wheel an ancient measure height, pylon weighs 160 tons, if pylon is raised to 105m, weight will reach 285 tons, increase the expenses such as material, manufacturing, transportation and installation of pylon greatly.
Usually adopt steel awl cartridge type pylon for modern Large-scale Wind Turbines, generally the awl tube by plurality of sections 20-30m is formed by connecting with flange, and pylon diameter from bottom to up reduces gradually, and it is round table-like that integral body is.The advantage of such pylon is the ability with good opposing all directions load, and Safety performance is good, good visual effect, and install and to save time, keep in repair more convenient.But along with wind-powered electricity generation machine single-machine capacity increases, constantly need to increase intensity, rigidity and the height of pylon, this just needs to increase the diameter of pylon, the thickness of tower wall.The increase of tower diameter and wall thickness, the problem of bringing are to have increased Master Cost, freight and installation and processing expense greatly.Particularly aspect land transport, when tower diameter surpasses 4.2m, be difficult to by some roads and tunnels; Thickening of tower wall makes the curling of steel plate and welds the difficulty that becomes.And because the global stability requirement has limited the application of high-strength steel.In addition, the large fan pylon generally is designed to flexible pylon, for prevent resonance, its first natural frequency need be avoided the wind wheel excited frequency, on the engineering fitness for purpose be controlled at ± about 10%.And the damping of steel pipe pylon is less, and power performance is relatively poor, under the horizontal loads distortion bigger, easily cause fatigue ruption.
Conventional steel Taper Pipe pylon joint generally adopts L type flange-type Placement, and flange generally is welded on inside, and upper and lower tower drum flange connects with the prestretching high-strength bolt.Most of flange diameter are at 3m-4.5m, and generally at 100mm-300mm, bottom column drum flange thickness will reach more than the 100mm width according to different connecting bolts.Bolt generally adopts M36-M42.At present the steel tube tower drum flange adopts casting or steel plate to roll to form, the flanged surface flatness is had higher requirement, as diameter 3m, flatness error is controlled in the 0.8mm, otherwise can influence the connection and the perpendicularity of pylon.If have influence on the flatness of Flange Plane in the welding, also need further machining, so the flange production processing cost is higher.In addition, flange adopts bolt to connect, and at blower fan repeatedly under the vibrating load effect, concentrates and causes fatigue ruption thereby bolt is easy to generate stress, and a certain bolt destroys, and can cause a series of bolts to destroy, thereby cause whole pylon to collapse.So the high-strength pretension bolt that tower flanges connects need be made regular check on, prevent the loss of bolt corrosion and pretightening force, the regular maintenance expense is higher.
Summary of the invention
The objective of the invention is to overcome above-mentioned the deficiencies in the prior art, a kind of large-scale wind driven generator pylon is proposed, traditional steel canalis spinalis pylon is adopted on pylon top, the bottom adopts the hollow sandwich steel pipe to exempt from the vibration concrete structure from stress, connect top and bottom by grouting, effectively reduce joint stress and concentrate, increased the bearing capacity and the anti-fatigue performance of joint.
Technical solution of the present invention is as follows:
A kind of large-scale wind driven generator pylon, this pylon are taper, are divided into two sections in upper and lower from top to bottom, and this top is steel canalis spinalis structure, and its characteristics are that described bottom is that hollow sandwich steel canalis spinalis is exempted from the vibration concrete structure from stress;
Connect for grouting between the described upper and lower, the internal diameter of described upper bottom is bigger than the external diameter at top, described bottom, the top section of this bottom is embedded in the bottom on top, between the overlapping annular space at upper bottom and top, bottom, be filled with grouting material;
Described hollow sandwich steel canalis spinalis is exempted from the vibration concrete structure from stress and is comprised inner layer steel pipe and outer layer pipe, is filled with concrete between described inner layer steel pipe and outer layer pipe.
Preferably, described concrete is for to exempt from vibration concrete from stress.
Preferably, bottom, described annular space is provided with baffle plate, grouting material seepage flow when preventing to construct.
Preferably, the overlapping annular space part height at described upper bottom and top, bottom is 1.3 ~ 1.6 times of the outer path length of described upper bottom.
Preferably, described grouting material is the high-strength no necked material of cement-base.
Because blower fan pylon is a cantilever structure, structural design control position is in the pylon bottom, so the present invention only need consider to strengthen the drag performance of pylon structure bottom, traditional steel canalis spinalis pylon structure is also adopted on pylon top.
Beneficial effect compared with prior art of the present invention is as follows:
(1) because concrete filled steel tube is adopted in the bottom, make the clean steel tubular construction of integral damping greater than top, pylon bears dynamic load for a long time, and structural damping increases its anti-fatigue performance to reducing its dynamic response.
(2) owing between outer layer pipe and inner layer steel pipe, built concrete,, increased its stability, can effectively reduce thickness of steel pipe, helped using high-strength steel because concrete existence has retrained the lateral deformation of steel pipe; Concrete existence simultaneously, hollow sandwich concrete structure lateral rigidity is bigger, can effectively reduce the diameter of pylon bottom.
(3) since adopt have a higher service behaviour exempt from vibration concrete from stress, solved the problem that normal concrete is difficult to guarantee construction quality, the outer layer pipe operative constraint dilatancy of expansive concrete, the steel one that effective solution normal concrete contraction etc. causes mixes the adhesion problem of combined interface, thereby guarantee both co-ordinations, and make that concrete internal structure is more closely knit, steel pipe has made full use of the expansion energy of expansive concrete, can produce bigger chemical stress, for core concrete provides higher side direction prestressing force.
(4) owing to adopt grouting to connect, grouting material such as filling concrete slurry connects top and bottom, bottom and bottom in the annular space between pylon top, bottom and bottom, and the shear strength after solidifying by packing material is come passing shaft power.
(5) owing to adopt the high-strength no necked material of cement-base as grouting material, structure does not have contraction, intensity height, connects reliable for effectly, can satisfy the stressed of pylon under the extreme operating condition condition.
(6) owing to adopt bottom grouting, the grouting body is more closely knit, and is good with the steel pipe bond effect, do not have bigger space.
(7) the present invention has simple in structurely, saves cost, and is easily manufactured, the characteristics of being convenient to transport.
Description of drawings
Fig. 1 is a large-scale wind driven generator pylon mode of execution schematic representation of the present invention.
Fig. 2 is the local amplification profile of A part among Fig. 1.
Fig. 3 is the cross-sectional view of Fig. 2.
Among the figure: I-top; The II-bottom; 1-blower fan and blade; The 2-grouting material; The 3-baffle plate; The 4-inner layer steel pipe; The 5-concrete; The outside steel pipe of 6-; The 7-water surface; 8-mud face; 9-stake bottom.
Embodiment
Below in conjunction with drawings and Examples the present invention is further described, but should limit protection scope of the present invention with this.
Please consult Fig. 1 and Fig. 2 earlier, Fig. 1 is a large-scale wind driven generator pylon mode of execution schematic representation of the present invention, and Fig. 2 is the local amplification profile of A part among Fig. 1.As seen from the figure, a kind of large-scale wind driven generator pylon, this pylon is taper, be divided into two sections of top I and bottom II from top to bottom, this top is steel canalis spinalis structure, described bottom is a hollow sandwich steel canalis spinalis concrete structure, comprises inner layer steel pipe 4 and outer layer pipe 6, is filled with from stress between described inner layer steel pipe 4 and outer layer pipe 6 and exempts from vibration concrete 5.
Connect for grouting between described top I and the bottom II, the internal diameter of described top I bottom is bigger than the external diameter at II top, described bottom, make the bottom of the top section embedding top I of this bottom II, between the overlapping annular space at described upper bottom and top, bottom, be filled with the high-strength no necked material 2 of cement-base, be provided with baffle plate 3 in bottom, described annular space.
Manufacturing of the present invention is the height according to pylon, respectively in factory process pylon upper and lower.When the high pylon of needs processing 100m, generally the hollow sandwich steel canalis spinalis The Concrete Structure Design with the bottom is that 30-40m is long, process inner layer steel pipe and outer layer pipe at first respectively, assembling is located then, and adopt and to exempt from vibration concrete from stress and build, build and finish back certain concrete curing time of reservation.The steel pricker tubular construction on top is designed to two sections of 30-35m length, adopts conventional flange to connect in the middle of it.
After the upper and lower of pylon machines, be transported to the blower fan build on-site, adopt the grouting formula to be connected pylon bottom concrete-filled double skin steel tube and basis, treat that slurry has enough bearing capacities after, lift the top pylon.

Claims (6)

1. large-scale wind driven generator pylon, this pylon is taper, is divided into top (I) and bottom (II) two sections from top to bottom, and this top (I) is steel canalis spinalis structure, it is characterized in that, and described bottom (I) is hollow sandwich steel canalis spinalis concrete structure;
Connect for grouting between described top (I) and bottom (II), the internal diameter of bottom, described top (I) is bigger than the external diameter at top, described bottom (II), make the bottom on the top section embedding top (I) of this bottom (II), between the overlapping annular space at described upper bottom and top, bottom, be filled with grouting material (2).
2. large-scale wind driven generator pylon according to claim 1, it is characterized in that, described hollow sandwich steel canalis spinalis concrete structure comprises inner layer steel pipe (4) and outer layer pipe (6), is filled with concrete (5) between described inner layer steel pipe (4) and outer layer pipe (6).
3. large-scale wind driven generator pylon according to claim 2 is characterized in that, described concrete (5) is for to exempt from vibration concrete from stress.
4. large-scale wind driven generator pylon according to claim 1 and 2 is characterized in that, the overlapping annular space height at described top (I) bottom and top, bottom (II) is 1.3 ~ 1.6 times of the outer path length in bottom, described top (I).
5. large-scale wind driven generator pylon according to claim 1 and 2 is characterized in that, bottom, described annular space is provided with baffle plate (3).
6. large-scale wind driven generator pylon according to claim 1 is characterized in that, described grouting material is the high-strength no necked material of cement-base.
CN2011102319978A 2011-08-15 2011-08-15 Tower frame of large wind driven generator CN102269136A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011102319978A CN102269136A (en) 2011-08-15 2011-08-15 Tower frame of large wind driven generator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011102319978A CN102269136A (en) 2011-08-15 2011-08-15 Tower frame of large wind driven generator

Publications (1)

Publication Number Publication Date
CN102269136A true CN102269136A (en) 2011-12-07

Family

ID=45051536

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2011102319978A CN102269136A (en) 2011-08-15 2011-08-15 Tower frame of large wind driven generator

Country Status (1)

Country Link
CN (1) CN102269136A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105113639A (en) * 2015-07-06 2015-12-02 清华大学 Connector with prefabricated steel pipe concrete beam segment and connecting method thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2881142Y (en) * 2004-10-11 2007-03-21 英奈欧21有限公司 Improved combined tower structure suitable for wind wheel machine and other application
CN201448192U (en) * 2009-08-21 2010-05-05 广州雅图风电设备制造有限公司 Tower column structure of vertical wind power generator
CN101725475A (en) * 2008-10-15 2010-06-09 天津万联管道工程有限公司 Wind power tower drum with precast reinforced concrete pillar
CN201746845U (en) * 2010-04-02 2011-02-16 中国海洋石油总公司 Pile foundation type foundation structure applicable to ocean engineering

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2881142Y (en) * 2004-10-11 2007-03-21 英奈欧21有限公司 Improved combined tower structure suitable for wind wheel machine and other application
CN101725475A (en) * 2008-10-15 2010-06-09 天津万联管道工程有限公司 Wind power tower drum with precast reinforced concrete pillar
CN201448192U (en) * 2009-08-21 2010-05-05 广州雅图风电设备制造有限公司 Tower column structure of vertical wind power generator
CN201746845U (en) * 2010-04-02 2011-02-16 中国海洋石油总公司 Pile foundation type foundation structure applicable to ocean engineering

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105113639A (en) * 2015-07-06 2015-12-02 清华大学 Connector with prefabricated steel pipe concrete beam segment and connecting method thereof

Similar Documents

Publication Publication Date Title
ES2296058T3 (en) Tower for a wind turbine, prefabricated metal wall piece for use in the tower for a wind turbine and method to build a tower for a wind turbine.
US9546642B2 (en) Energy-storing and power-generating system and method for a vertical-axis wind generator
CN108194274B (en) Truss tower for supporting loads
KR20080011667A (en) Prefabricated modular tower
JP5148689B2 (en) Monopole tower and wind turbine generator equipped with monopole tower
EP1947328B1 (en) Joining device for hybrid wind turbine towers
CN103821677B (en) Prefabricated PC RPC wind power tower
KR20120073785A (en) Modular type wind power generation tower
JP2012012929A (en) Tower having tension cable
JP4242445B1 (en) Basic structure of tower structure
JP2011524496A (en) Turbine with band
KR20100021994A (en) Wind power generator and method of constructing the same
CN101798849A (en) Node connection device for self-centering prestressed concrete frame
Hau et al. WEGA large wind turbines
DK2847459T3 (en) Plate Transition piece
CN201649118U (en) Foundation structure of jacket-type offshore wind turbine
JP2015526616A (en) Modular tower of wind power plant
DK2918751T3 (en) Support structure for wind turbines and form for manufacturing such structures
CN202152463U (en) Foundation pressure-bearing beam plate type wind power generation tower foundation
KR20100062946A (en) Wind turbine with improved tower and method of assembling same
CA2560569A1 (en) System and method for driving a monopile for supporting an offshore wind turbine
JPWO2012025985A1 (en) Wind turbine generator and tower construction method for wind turbine
CN201326524Y (en) Composite tower cylinder of wind turbine
CN101812842A (en) Tensionless filling pile structure
US20110210233A1 (en) Reinforcement system for wind turbine tower

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C12 Rejection of a patent application after its publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20111207