CN104564539B - Wind power generating set and its kuppe front supporting device - Google Patents

Wind power generating set and its kuppe front supporting device Download PDF

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Publication number
CN104564539B
CN104564539B CN201410844062.0A CN201410844062A CN104564539B CN 104564539 B CN104564539 B CN 104564539B CN 201410844062 A CN201410844062 A CN 201410844062A CN 104564539 B CN104564539 B CN 104564539B
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CN
China
Prior art keywords
kuppe
connecting portion
wind power
power generating
generating set
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CN201410844062.0A
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Chinese (zh)
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CN104564539A (en
Inventor
张国明
李会勋
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Jiangsu Goldwind Science and Technology Co Ltd
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Jiangsu Goldwind Science and Technology Co Ltd
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Priority to CN201410844062.0A priority Critical patent/CN104564539B/en
Publication of CN104564539A publication Critical patent/CN104564539A/en
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03DWIND MOTORS
    • F03D1/00Wind motors with rotation axis substantially parallel to the air flow entering the rotor 
    • F03D1/04Wind motors with rotation axis substantially parallel to the air flow entering the rotor  having stationary wind-guiding means, e.g. with shrouds or channels
    • 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
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/70Wind energy
    • Y02E10/72Wind turbines with rotation axis in wind direction

Abstract

The invention discloses a kind of wind power generating set and its kuppe front supporting device, the kuppe front supporting device includes:Kuppe;Wheel hub, is arranged on inside the kuppe;Three groups of axial support frames, are connected between the wheel hub and the kuppe;Three groups of bending plates, are arranged at intervals with axial support frame described in three groups, and the bending plate is formed in one structure, and the two ends of the bending plate are connected in the adjacent axial support frame, and the centre of the bending plate is connected on the wheel hub.The wind power generating set includes above-mentioned kuppe front supporting device.The wind power generating set and its kuppe front supporting device that the present invention is provided have higher rigidity and fatigue resistance.

Description

Wind power generating set and its kuppe front supporting device
Technical field
The present invention relates to technical field of wind power generation, more particularly to a kind of wind power generating set and its kuppe front support dress Put.
Background technology
The projected life of wind power generating set is generally 20 years, and number of revolutions of the impeller in life cycle is typically larger than 107.Kuppe is arranged on outside wheel hub, is rotated with wheel hub, is born the gravitational load of alternation, for guiding air flow, is reduced Resistance, the unfavorable load of reduction blower fan top of tower.The randomness of wind speed and direction is additionally, since, kuppe still suffers from change Wind load.Because the working environment of wind power generating set is more severe, maintainable poor, the maintenance cost of kuppe supporting construction It is high.In summary factor, it is ensured that the fatigue endurance performance of kuppe supporting construction is must in the design phase of wind power generating set The problem of must considering.
《The manufacture craft of kuppe》One text describes the height for integrating the functions such as fire-fighting, dynamic positioning, traction, transport The ship of technology content, high added value, ship AHTS 80t.In order to improve powerpropelled efficiency, AHTS 80t propeller is all With kuppe, kuppe of this article to be equipped with describes its manufacture craft as object.
Notification number discloses a kind of rotor assembly of wind-driven generator for CN201416509Y patent, mainly solves to dissipate Heat, blade install wing root portion's intensity and the force-bearing situation problem of axle suspension arm.The patent is by dislocation after the blade installation wing in bonding magnetic In the axial dimension at steel position, and its root intensity is improved with avris flanging and feature board;On the cup bottom of rotor front end Cloth balance goes to expect hole, makes to be in open architecture in the thorax of rotor;There is section in the outer rim at cup bottom, its port with former dome Circulation passageway is formed between inwall, makes that there is flow channel in thorax between air and the external world;Having on rear defence shield can be into thorax Being pressed on the louvered window of air, the outer wall of rotor cup cylinder has axial raised line.
In the design process for stating kuppe supporting construction in realization, inventor is had found in the prior art at least in the presence of as follows Problem:In said structure and water conservancy diversion cover structure of the prior art, the fatigue of kuppe supporting construction is not taken into full account Intensity, and there is the problem of fatigue endurance performance is not enough, increase the possibility that fatigue rupture occurs for whole kuppe supporting construction Property.
The content of the invention
Embodiments of the invention provide a kind of wind power generating set and its kuppe front supporting device, by set one into The bending plate of type, it is possible to increase the overall fatigue resistance of kuppe front support structure and rigidity.
To reach above-mentioned purpose, embodiments of the invention are adopted the following technical scheme that:
A kind of kuppe front supporting device of wind power generating set, including:
Kuppe;
Wheel hub, is arranged on inside the kuppe;
Three groups of axial support frames, are connected between the wheel hub and the kuppe;
Three groups of bending plates, are arranged at intervals with axial support frame described in three groups, and the bending plate is formed in one structure, institute The two ends for stating bending plate are connected in the adjacent axial support frame, and the centre of the bending plate is connected to the wheel hub On.
Further, the axial support frame includes:
Support beam, its two ends are connected on the kuppe;
Two support bars for be arrangeding in parallel, one end of the support bar is vertically set in the support beam, the support The other end of bar is connected with the wheel hub.
Further, the bending plate includes:The first connecting portion that is sequentially connected, the first supporting part, second connecting portion, Two supporting parts and the 3rd connecting portion;
Wherein, the first connecting portion and the 3rd connecting portion respectively with axial support frame described in adjacent two groups Support beam one end connection;The second connecting portion is connected with the wheel hub.
Further, bolt hole is offered on the first connecting portion and the 3rd connecting portion, the first connecting portion, 3rd connecting portion is bolted with the support beam;Bolt hole, described second are offered in the second connecting portion Connecting portion is bolted with the wheel hub.
Further, the bolt hole in the first connecting portion and the 3rd connecting portion is elongated hole.
Further, the first connecting portion and the 3rd connecting portion and the support beam clamping, second connection Portion and the wheel hub clamping.
Further, the first connecting portion, the 3rd connecting portion and the support beam, the second connecting portion and institute Wheel hub is stated to connect in the way of clamping and the combination that is spirally connected.
Further, the first connecting portion and the 3rd connecting portion are also connected with the kuppe.
Further, in the bending plate structure, adjacent connecting portion is set with the coplanar setting of supporting part or antarafacial.
Further, in the bending plate structure, the angle between adjacent connecting portion and supporting part is not less than 90 °.
Further, first supporting part and second supporting part are shaped as plane, cambered surface or shaped face.
A kind of wind power generating set, includes the kuppe front supporting device of the wind power generating set described in any of the above-described.
Wind power generating set provided in an embodiment of the present invention and its kuppe front supporting device, between wheel hub and kuppe Add integrally formed bending plate.Because the bending plate does not have weld seam, also connect to be formed not over other modes, thus work as When kuppe rotates with wheel hub and bears alternate load, it is possible to increase the fatigue resistance of kuppe supporting construction, biography is solved The not enough defect of the welding structure fatigue endurance performance of system.Secondly because kuppe is carried by bending plate and wheel hub Mulit-point Connection The integral rigidity and intensity of high kuppe front supporting device.Furthermore the angle between each plate face of bending plate is all not less than 90 °, so as to also ensure that kuppe front supporting device and the overall fatigue resistance of wind power generating set.
Brief description of the drawings
Fig. 1 is the structural representation of the kuppe front supporting device of wind power generating set provided in an embodiment of the present invention;
Fig. 2 is another structural representation of the kuppe front supporting device of wind power generating set provided in an embodiment of the present invention Figure;
Fig. 3 is the front view of bending plate provided in an embodiment of the present invention;
Fig. 4 is the side view of bending plate provided in an embodiment of the present invention;
The structural representation for the kuppe front supporting device that Fig. 5 provides for contrast scheme;
The stress diagram for the kuppe front supporting device that Fig. 6 provides for contrast scheme;
The stress diagram of the kuppe front supporting device for the wind power generating set that Fig. 7 provides for the present invention.
Drawing reference numeral explanation:
100- kuppe front supporting devices;10- bending plates;101- first connecting portions;102- second connecting portions;103- the 3rd Connecting portion;The supporting parts of 104- first;The supporting parts of 105- second;20- axial directions support frame;201- support beams;202,203- supports Bar;204- intermediate plates;30- wheel hubs;40- kuppes;50- supporting plates.
Embodiment
The kuppe front supporting device of wind power generating set provided in an embodiment of the present invention is carried out in detail below in conjunction with the accompanying drawings Thin description.
As shown in figure 1, the knot of the kuppe front supporting device of the wind power generating set provided for one embodiment of the invention Structure schematic diagram, the kuppe front supporting device 100 includes:Bending plate 10, axial support frame 20, wheel hub 30 and kuppe 40。
Wherein, wheel hub 30 is arranged on inside kuppe 40;Axial support frame 20 be connected to wheel hub 30 and kuppe 40 it Between, and for supporting kuppe 40 in the axial direction;Bending plate 10 connects with wheel hub 30, kuppe 40 and axial support frame 20 Connect.Wherein axial support frame 20 has three groups, is disposed on identical inside kuppe 40, and bending plate 10 is with axially propping up Support frame frame 20 is arranged at intervals, it may have three groups.
As shown in Fig. 2 axial support frame 20 is made up of support beam 201 and two support bars 202,203.Support beam 201 two ends are connected on kuppe 40 (not shown), and two support bars 202 and 203 are be arranged in parallel, and its one end is vertically set on In support beam 201, it can specifically be welded on an intermediate plate 204 (can be square), then intermediate plate 204 is bolted In support beam 201, the other end is connected with wheel hub 30, can be specifically bolted.
As shown in Figure 3 and Figure 4, bending plate 10 is formed in one structure, includes successively:First connecting portion 101, first is supported Portion 104, second connecting portion 102, the second supporting part 105 and the 3rd connecting portion 103.Wherein, first connecting portion 101 and the 3rd connects Socket part 103 is connected on the axial support frame 20 of adjacent two, is specifically connected to one end of support beam 201, and at this Junction, the connecting portion 103 of first connecting portion 101 and the 3rd is also connected (not shown) with kuppe 40 respectively;Second connecting portion 102 It is connected on wheel hub 30, is specifically connected on the pitch drive support of wheel hub 30.
In a kind of possible implementation, in first connecting portion 101, the connecting portion 103 of second connecting portion 102 and the 3rd Bolt hole is offered, first connecting portion 101, the 3rd connecting portion 103 are connected by bolt with support beam 201 and kuppe 40, Second connecting portion 102 is attached by bolt with wheel hub 30.And preferably, the connecting portion 103 of first connecting portion 101 and the 3rd On bolt hole be designed as elongated hole, to allow certain form and position tolerance.The number of wherein bolt hole is preferably 4, to ensure folding Fastening effect between bent plate 10 and miscellaneous part.
In alternatively possible implementation, bending plate 10 and axial support frame 20, wheel hub 30 and kuppe 40 Between connected by snap fit.For example, by first connecting portion 101, the connecting portion 103 of second connecting portion 102 and the 3rd Upper setting fastener, neck is set in support beam 201 and wheel hub 30, can make the connecting portion 103 of first connecting portion 101 and the 3rd It is connected on axial support frame 20 and kuppe 40, second connecting portion 102 is connected on wheel hub 30.
In alternatively possible implementation, it can also will be rolled over by using above-mentioned clamping and the combined mode that is spirally connected Bent plate 10 is connected on axial support frame 20, wheel hub 30 and kuppe 40.For example, first connecting portion 101 and support beam 201 Clamping, the 3rd connecting portion 103 is spirally connected with support beam 201, second connecting portion 102 and the clamping of wheel hub 30.
In addition, the change of the link position in order to adapt to wheel hub 30 and axial support frame 20, bending plate 10 can basis Need to be designed as different shapes.For example, in the above-mentioned technical solutions, adjacent connecting portion can be set with supporting part with coplanar, Can also antarafacial setting;The shape of first supporting part 104 and the second supporting part 105 is not limited to plane, or cambered surface, even Waveform face, shaped face.
Because the bending angle of bending plate is smaller, in process, the plastic strain of bending part and residual stress are bigger, When simultaneously by external load, the stress concentration of bending part is bigger, and these can all weaken the intensity of structure, and especially fatigue is strong Degree.Moreover, the angle between bending plate adjacent component is smaller, when by external load, the stress concentration of generation is more serious, The intensity of structure can be weakened, thus in the embodiment shown in Fig. 3 and Fig. 4, the plate face of adjacent supporting part and connecting portion Plate face angulation is not less than 90 degree, so as to ensure the overall fatigue resistance of kuppe front supporting device 100.
In addition, the thickness of bending plate 10 can be according to the structural strength of kuppe front supporting device 100 in the present embodiment It can require to be adjusted, the making material of bending plate 10 is preferably Q345 steel.In process, it is necessary to the plate of bending plate 10 Side is polished, to ensure no sharp edge, breach, crackle and other defect.
The kuppe front supporting device for the wind power generating set that the present embodiment is provided, is added between wheel hub and kuppe Integrally formed bending plate.Because the bending plate is connected without weld seam or other modes, thus when kuppe is with wheel hub rotation When bearing alternate load, it is possible to increase the fatigue resistance of kuppe supporting construction, traditional welding structure fatigue is solved resistance to The defect that long performance is not enough.Secondly because kuppe is by bending plate and wheel hub Mulit-point Connection, kuppe front support dress is improved The integral rigidity and intensity put.Furthermore the angle between each plate face of bending plate is all not less than 90 °, so as to also ensure that water conservancy diversion The overall fatigue resistance of cover front supporting device.
The effect of kuppe front supporting device is that kuppe is fixed on wheel hub, and bears to act on each on kuppe Plant load.Kuppe lightweight then hundreds of kilograms in itself, it is heavy then several tons, its gravity is to cause kuppe front supporting device stand under load One of principal element.By finite element technique, can analyze under the Action of Gravity Field of kuppe, kuppe supporting construction should Power level and fluctuation range, and then the fatigue strength and life expectancy of kuppe supporting construction can be assessed.
Based on this, the present inventor is by the kuppe front supporting device of certain type in the prior art scheme as a comparison, with this The kuppe front supporting device that invention is provided has carried out finite element analysis.As shown in figure 5, in the kuppe front support of contrast scheme In device, its supporting plate 50 (equivalent to the bending plate 10 of the present invention) is connected to the branch of axial support structure using welding manner more On strut.Based on the structure, under the gravitational load effect of alternation, the amplitude of maximum equivalent is 30.4MPa, appears in figure F points in 6, the point is position while welding.
And the kuppe front supporting device provided based on the present invention, by taking the 6MW units of the applicant as an example, in the weight of alternation Under the effect of power load, the amplitude of maximum equivalent is 23.0MPa, occurs not having weld seam near H points in the figure 7, the point;And In the amplitude of the maximum equivalent of commissure (i.e. support beam 201 and the junction of intermediate plate 204), then 1.2MPa is reduced to, There are G points in the figure 7.
By comparing calculation, as a result show:The kuppe front supporting device that the present invention is provided is under gravitational load effect, knot The integrated stress level of structure has declined, and the larger position of stress is not position while welding, and level of fatigue is greatly improved;Simultaneously The stress level of commissure is substantially reduced, can so significantly improve whole kuppe front supporting device fatigue endurance performance and Reliability, reduces the fault rate of unit, improves gene-ration revenue.
Embodiments of the invention additionally provide a kind of wind power generating set, including the wind power generating set in above-described embodiment Kuppe front supporting device.
The foregoing is only a specific embodiment of the invention, but protection scope of the present invention is not limited thereto, any Those familiar with the art the invention discloses technical scope in, change or replacement can be readily occurred in, should all be contained Cover within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.

Claims (12)

1. a kind of kuppe front supporting device of wind power generating set, it is characterised in that including:
Kuppe;
Wheel hub, is arranged on inside the kuppe;
Three groups of axial support frames, are connected between the wheel hub and the kuppe;
Three groups of bending plates, are arranged at intervals with axial support frame described in three groups, and the bending plate is formed in one structure, the folding The two ends of bent plate are connected in the adjacent axial support frame, and the centre of the bending plate is connected on the wheel hub.
2. the kuppe front supporting device of wind power generating set according to claim 1, it is characterised in that the axially branch Support frame frame includes:
Support beam, its two ends are connected on the kuppe;
Two support bars for be arrangeding in parallel, one end of the support bar is vertically set in the support beam, the support bar The other end is connected with the wheel hub.
3. the kuppe front supporting device of wind power generating set according to claim 2, it is characterised in that the bending plate Including:First connecting portion, the first supporting part, second connecting portion, the second supporting part and the 3rd connecting portion being sequentially connected;
Wherein, the first connecting portion and the 3rd connecting portion respectively with the branch in axial support frame described in adjacent two groups Support one end connection of beam;The second connecting portion is connected with the wheel hub.
4. the kuppe front supporting device of wind power generating set according to claim 3, it is characterised in that described first connects Bolt hole, the first connecting portion, the 3rd connecting portion and the support beam are offered in socket part and the 3rd connecting portion It is bolted;Bolt hole is offered in the second connecting portion, the second connecting portion is connected with the wheel hub by bolt Connect.
5. the kuppe front supporting device of wind power generating set according to claim 4, it is characterised in that described first connects Bolt hole in socket part and the 3rd connecting portion is elongated hole.
6. the kuppe front supporting device of wind power generating set according to claim 3, it is characterised in that described first connects Socket part and the 3rd connecting portion and the support beam clamping, the second connecting portion and the wheel hub clamping.
7. the kuppe front supporting device of wind power generating set according to claim 3, it is characterised in that described first connects Socket part, the 3rd connecting portion and the support beam, the second connecting portion is with the wheel hub with clamping and the side combined that is spirally connected Formula is connected.
8. the kuppe front supporting device of the wind power generating set according to claim any one of 1-7, it is characterised in that institute State first connecting portion and the 3rd connecting portion is also connected with the kuppe.
9. the kuppe front supporting device of the wind power generating set according to claim any one of 1-7, it is characterised in that In the bending plate structure, adjacent connecting portion is set with the coplanar setting of supporting part or antarafacial.
10. the kuppe front supporting device of the wind power generating set according to claim any one of 1-7, it is characterised in that In the bending plate structure, the angle between adjacent connecting portion and supporting part is not less than 90 °.
11. the kuppe front supporting device of the wind power generating set according to claim any one of 1-7, it is characterised in that First supporting part and second supporting part are shaped as plane, cambered surface or shaped face.
12. a kind of wind power generating set, it is characterised in that including the wind power generating set described in claim any one of 1-11 Kuppe front supporting device.
CN201410844062.0A 2014-12-30 2014-12-30 Wind power generating set and its kuppe front supporting device Active CN104564539B (en)

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Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108301991A (en) * 2018-04-03 2018-07-20 优利康达(天津)科技有限公司 Novel guide cover
CN109446547A (en) * 2018-09-10 2019-03-08 许继集团有限公司 A kind of strength calculation method of wind generating set pitch control cabinet mounting bracket
CN109505743A (en) * 2019-01-23 2019-03-22 优利康达(天津)科技有限公司 A kind of wind power generator hubcap
CN109882358B (en) * 2019-03-05 2020-12-01 中国船舶重工集团海装风电股份有限公司 Wind driven generator and variable pitch mechanism thereof

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CN202832991U (en) * 2012-10-26 2013-03-27 南车株洲电力机车研究所有限公司 Hubcap fixing device of wind power generator set
CN204402768U (en) * 2014-12-30 2015-06-17 江苏金风科技有限公司 Wind power generating set and air guide sleeve front supporting device thereof

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Publication number Priority date Publication date Assignee Title
WO2004081373A2 (en) * 2003-03-11 2004-09-23 aeroconcept Ingenieurgesellschaft für Luftfahrttechnik und Faserverbundtechnologie mbH Maintenance platform
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CN204402768U (en) * 2014-12-30 2015-06-17 江苏金风科技有限公司 Wind power generating set and air guide sleeve front supporting device thereof

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