CN202047948U - Elastic element for warping board hub of two-blade wind power generator unit - Google Patents
Elastic element for warping board hub of two-blade wind power generator unit Download PDFInfo
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- CN202047948U CN202047948U CN2011201379498U CN201120137949U CN202047948U CN 202047948 U CN202047948 U CN 202047948U CN 2011201379498 U CN2011201379498 U CN 2011201379498U CN 201120137949 U CN201120137949 U CN 201120137949U CN 202047948 U CN202047948 U CN 202047948U
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- wheel hub
- wind power
- elastic
- blade wind
- elastomer
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Abstract
An elastic element for warping board hub of a two-blade wind power generator unit comprises a pair of elastic conical sleeves and a buffer block set, wherein the elastic conical sleeve is composed of an inner steel sleeve, an elastic part and an outer steel sleeve, the inner steel sleeve and the outer steel sleeve can rotate relative to each other at a certain angle, and thereby a warping board can swing at a certain angle when a hub rotates. The buffer block set is composed of an end board, a partition board, an elastic part and a wear-resistant board, and the buffer block bears high-load impact and buffers and limits swinging of the hub, so that vibration and noise in operation are reduced.
Description
Technical field
The utility model relates to a kind of two blade wind power generation unit seesaw wheel hub elastic elements, and this elastic element is made up of an a pair of elastic conical drogue and a cover buffer stopper, is mainly used in two blade axial fan hub vibration and noise reducing and flexible support.
Background technique
Normal three blade structures that adopt of Large-scale Wind Turbines are to have better balance with respect to the blower fan advantage of two blades, and this helps reducing the fatigue load of main parts size.In the two blade wind power generation unit operations, blade forms moment of torsion because institute's wind-engaging carries not of uniform size causing to main shaft.Therefore, there is unbalanced load during the blade rotation, easily causes the important spare part fatigue damage.
But two blade Large-scale Wind Turbines have huge cost advantage with respect to three blade structures, and along with marine MW class unit demand increases, cost pressure increases.Two blade types are owing to reduced difficulty when installing with respect to three blade types when installing, and owing to reduced blade quantity, cost reduces significantly.Therefore two blade blower fans can become preferred object.For reducing the influence that unbalanced load is brought, two kinds of methods commonly used solve.First kind of scheme is the size that increases main parts size, but this scheme can be brought the rising of cost, offset the advantage that reduces blade quantity, therefore seldom adopts.Second kind of scheme is that blade rigid is connected to wheel hub, again by elastic element with the wheel hub flexible, hinged on main shaft.Utilize the fatigue load of the buffer function reduction important spare part of elastic element, the wheel hub of common this structure is called as the seesaw structural hub.Seesaw structural hub kind has a lot, as: Chinese patent CN 201621000 U, U.S. Pat 4565929, US 5354175 and international monopoly 2009120693A2.Under the limit load when but existing wind power generating set seesaw wheel hub is swung with elastic element ubiquity wheel hub, the problem that the elastic element distortion is excessive will influence the working life of elastic element like this, so be necessary this is improved.
The model utility content
The purpose of this utility model is exactly with under the limit load of elastic element when wheel hub is swung at existing wind power generating set seesaw wheel hub, the deficiency that the elastic element distortion is excessive, provide a kind of and can solve under wheel hub when swing limit load two blade wind power generation unit seesaw wheel hub elastic elements of the problem that the elastic element distortion is excessive.
In order to realize purpose, the utility model provides a kind of two blade wind power generation unit seesaw wheel hub elastic elements, comprises an a pair of elastic conical drogue and a cover buffer stopper; Described a pair of elastic conical drogue, symmetry is installed in and wheel hub wheel hub annex both sides in vertical direction, elastic conical drogue is made up of interior steel bushing, elastomer and outer steel sleeve, can realize between interior steel bushing and the outer steel sleeve relatively rotating, make the wheel hub rotation time can realize the seesaw swing, when absorbing the wheel hub rotation by the elastomer buffering to the main shaft annex produce axially and radial load.Elastomer can adopt rubber material, and the interior steel bushing of tapered sleeve is in the same place by sulfuration adhesion with outer steel sleeve and elastomer; When ambient temperature is low, elastomer is compared the metal steel bushing axial shrinkage is easily taken place, make the interface of elastomer and metal exist stress to concentrate, internal stress in the time of can passing through the suitable elastomer profile of design with reduction work, a fixedly damping device also can be set, be used to cushion thrust load, avoid the elastic conical drogue distortion excessive, improve elastomeric working life.
Described one the cover damping device be installed in the rigidly connected wheel hub annex of main shaft cantilever arm on, damping device is made up of eight buffer stoppers; For the swing of wheel hub provides the effect of buffer limit, the vibration and the noise that produce when reducing fan operation.Described buffer stopper is fit to do stacked spring structure, adopt the inverse parallel structure during installation, and use spacing collar to realize its precompression, by regulating the hardness of sizing material, adjust elastomeric rigidity, amount of deformation during the work of control elastomer under the prerequisite that satisfies the normal seesaw motion of blade, increases the working life of buffer stopper.At the bonding wearing plate of elastomer end face, the wearing and tearing that friction causes when reducing end face work.
The utility model advantage is:
By changing the structure of wind power generating set seesaw wheel hub, make that when wheel hub rotates because the load on two blades is inconsistent, impeller produces the swing of several angle around the Z axle with elastic element.The swing of wheel hub applies torsion to the outer steel sleeve of elastic conical drogue, interior steel bushing is installed on the wheel hub annex, because rubber is flexible material, therefore outer steel sleeve can produce reversing of several angle with respect to interior steel bushing, axial and the radial load that when absorbing the wheel hub rotation main shaft annex is produced by the elastomer buffering, internal stress in the time of can improving elastomer work greatly avoids the elastic conical drogue distortion excessive, improves elastomeric working life.
Description of drawings
The two blade wheel hub schematic representation that Fig. 1 relates to for the utility model;
The elastic conical drogue scheme of installation that Fig. 2 relates to for the utility model;
The buffer stopper work schematic representation that Fig. 3 relates to for the utility model;
Fig. 4 is the utility model elastic conical drogue schematic representation;
Fig. 5 is the utility model buffer stopper schematic representation;
Fig. 6 is the utility model buffer stopper scheme of installation;
Fig. 7 is a stereogram of the present utility model.
Among the figure: 1, wheel hub, 2, buffer stopper, 3, the wheel hub annex, 4, elastic conical drogue, 5, block, 6, cover plate, 7, spacing cushion plate, 8, lining, 9, the artesian condition buffer stopper, 10, relaxation state buffer stopper, 11, outer steel sleeve, 12, elastomer, 13, interior steel bushing, 14, wearing plate, 15, dividing plate, 16, end plate, 17, buffering elastomer, 18, spacing collar, 19, swing axis.
Embodiment
Below in conjunction with drawings and Examples the utility model is further described.
Embodiment one
Shown in Fig. 1-6, a kind of two blade wind power generation unit seesaw wheel hub elastic elements comprise an a pair of elastic conical drogue 4 and a cover buffer stopper 2.
In the present embodiment, described elastic conical drogue 4 adopts the structure that elastomers 12 and interior steel bushing 13 and outer steel sleeve 11 bond together by sulfuration.For improving the working life of elastomer 12, avoid axial deformation excessive.During installation, adopt axial precompression structure, the angle of elastic conical drogue 4 can be 15 ~ 35 degree, and pre compressed magnitude can be 10% ~ 30% of bondline thickness size.For avoiding the axial deformation under the limit load excessive, can a spacing cushion plate 7 be installed at the end face of wheel hub annex 3, fixing in steel bushing 13 time, under limit load, axial deformation is absorbed by spacing buffering 7 plates.The outer steel sleeve 11 and the lining 8 of elastic conical drogue 4 are installed together, and lining 8 is pressed in the wheel hub by block 5, and is covered by cover plate 6.For improving the fatigue behaviour of elastic conical drogue 4, the profile inner concave shape degree of depth 5mm-30mm of elastomer 12 end faces; The angle of elastic conical drogue is the 10-35 degree, and axially pre compressed magnitude can be the 10%-30% of thickness size., do not interfere with other parts with the rubber profile that guarantees under limit load, to bloat.
Consider low temperature environment and 20 year working life, the material of elastomer 12 need possess good cryogenic property, compression set performance and higher resilience.The elastomer 12 of elastic conical drogue is rubber or polyurethane, and the hardness range of rubber or polyurethane is between the Shore A hardness 40-80 degree.
Described buffer stopper 2 relies on end plate and wheel hub to be linked together, and buffer stopper 2 can be all-in-one-piece, also can be the laminated rubber heap; Can be by adjusting the hardness of sizing material, obtain the rigidity that is fit to, the elastomer profile is a curve, when being convenient to big deformation under load, provides the certain deformation space.In the present embodiment, a cover buffer stopper 2 is made up of the buffering elastomer 17 of wearing plate 14, dividing plate 15, end plate 16 and rubber material; Wherein, the bottom is an end plate 16, and the topmost part is a wearing plate 14; , during wheel hub 1 rotation, there is relative slippage between impeller and the main shaft, one wearing plate 14 is vulcanized at the position that buffer stopper 2 connects with wheel hub, can reduce the abrasion of relative slippage generation.Between wearing plate 14 and end plate 16, be provided with dividing plate 15, also be provided with buffering elastomer 17 between dividing plate 15 both sides and wearing plate 14 and the end plate 16, form by the buffering elastomer 17 of wearing plate 14, dividing plate 15, end plate 16 and rubber material and be combined to form metal-rubber elastic composite buffer stopper.Buffer stopper 2 bears the impact of big load, is the buffer limit that provides of wheel hub swing, and reduces vibration and the noise that produces when moving.Buffering elastomer 17 is rubber or polyurethane; The hardness range of rubber or polyurethane is between the Shore A hardness 40-80.
Described buffer stopper 2 needs paired mounting when installing, be respectively artesian condition buffer stopper 9 and relaxation state buffer stopper 10, adopt the inverse parallel structure to be installed on the wheel hub, all can effectively cushion when swing axis 19 positive and negative directions are swung at wheel hub, guarantee precompression by spacing collar 18 during installation, the angle of the design consideration wheel hub swing of pre compressed magnitude designs, and pre compressed magnitude is 10% ~ 20%, when equipment operation, the amount of deformation that the impeller swing produces elastomer is no more than its pre compressed magnitude.
Described buffer stopper 2 exposes in the sun, therefore satisfies the projected life in 5 years at least.Material also need possess good compression permanent deformation performance, low resistance performance, rebound elasticity and cryogenic property preferably.
When wheel hub rotates, because the load on two blades is inconsistent, the swing that impeller produces several angle around swing axis 19.The swing of wheel hub applies torsion to the outer steel sleeve of elastic conical drogue, and interior steel bushing is installed on the wheel hub annex, because rubber is flexible material, so outer steel sleeve can produce reversing of several angle with respect to interior steel bushing.
Described tapered sleeve basic structure be interior steel bushing and outer steel sleeve and between the rubber that sulfides form, can be by adjusting the hardness of vulcanized rubber, also can be by in rubber, obtaining required rigidity and damping capacity at one or more layers steel bushing of sulfuration, the vibration damping that obtains different performance supports, to satisfy different operating mode demands.
In addition, in the fan operation process, swing is recurrent.Therefore the surface area of the tapered sleeve of product need be done greatly, the heat that rubber is produced in running distributes by the metal steel bushing.The interface size of installing during design need prevent the stretching of rubber in the working procedure with product axially producing precompression.Consider to be used under the low temperature environment and the working life in 20 years that material require possesses good cryogenic property, compression set and elastic material.
Pool of buffer piece, symmetry are installed in and the blade wheel hub annex both sides of direction linearly, realize the angle of restriction wheel hub swing.The cantilever arm of wheel hub annex places the centre of every pair of buffer stopper, after buffer stopper is installed on the mounting plate, relies on attachment bolt to be fixed together.The outside of bolt is mounted with stop collar, can be by regulating the pre compressed magnitude that this stop collar length is controlled buffer stopper.Buffer stopper can limit the pendulum angle of wheel hub in the wheel hub swing, play buffer shock-absorbing.
During the design buffer stopper, according to deflection angle, the maximum deformation quantity of design buffer stopper makes product when bearing maximum distortion, still has certain pre compressed magnitude.Prevent the stretching of rubber in the work.The rubber profile of buffer stopper is a curved surface, for the distortion of rubber provides certain space.Wearing plate of position sulfuration that buffer stopper connects with wheel hub, the abrasion that cause owing to friction when reducing work.
Claims (7)
1. a blade wind power generation unit seesaw wheel hub elastic element is characterized in that: comprise a pair of elastic conical drogue, a cover buffer stopper; Elastic conical drogue is made up of interior steel bushing, elastomer and outer steel sleeve, can realize between interior steel bushing and the outer steel sleeve relatively rotating, and can realize the seesaw swing when making the wheel hub rotation; One cover buffer stopper be installed in the rigidly connected wheel hub annex of main shaft cantilever arm on, damping device is made up of eight buffer stoppers, and the buffer limit that provides that wheel hub swings is provided.
2. two blade wind power generation unit seesaw wheel hub elastic elements as claimed in claim 1 is characterized in that: at the end face of wheel hub annex a spacing cushion plate is installed, fixing in steel bushing the time, under limit load, axial deformation is absorbed by spacing cushion plate.
3. two blade wind power generation unit seesaw wheel hub elastic elements as claimed in claim 2, it is characterized in that: the outer steel sleeve and the lining of elastic conical drogue are installed together, and lining is pressed in the wheel hub by block, and is covered by cover plate.
4. two blade wind power generation unit seesaw wheel hub elastic elements as claimed in claim 2, it is characterized in that: the elastomer of elastic conical drogue is rubber, polyurethane or rubber, hardness range is between the Shore A hardness 40-80 degree.
5. two blade wind power generation unit seesaw wheel hub elastic elements as claimed in claim 2 is characterized in that: the profile inner concave shape degree of depth 5mm-30mm of elastomer end face; The angle of elastic conical drogue is the 10-35 degree, and axially pre compressed magnitude can be the 10%-30% of thickness size.
6. two blade wind power generation unit seesaw wheel hub elastic elements as claimed in claim 1, it is characterized in that: buffering elastomer is rubber or polyurethane; The hardness range of rubber or polyurethane is between the Shore A hardness 40-80.
7. two blade wind power generation unit seesaw wheel hub elastic elements as claimed in claim 6, it is characterized in that: buffering elastomer is a laminated construction, and there is wearing plate the end, the buffering elastomer profile is a curve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201379498U CN202047948U (en) | 2011-05-04 | 2011-05-04 | Elastic element for warping board hub of two-blade wind power generator unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201379498U CN202047948U (en) | 2011-05-04 | 2011-05-04 | Elastic element for warping board hub of two-blade wind power generator unit |
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| Publication Number | Publication Date |
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| CN202047948U true CN202047948U (en) | 2011-11-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201379498U Expired - Lifetime CN202047948U (en) | 2011-05-04 | 2011-05-04 | Elastic element for warping board hub of two-blade wind power generator unit |
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| CN (1) | CN202047948U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108425810A (en) * | 2017-05-24 | 2018-08-21 | 株洲时代新材料科技股份有限公司 | A kind of fan blade buffer unit |
| CN111417779A (en) * | 2017-12-04 | 2020-07-14 | 西门子歌美飒可再生能源公司 | Wind turbine and method for assembling a wind turbine |
| CN116062154A (en) * | 2023-01-03 | 2023-05-05 | 广州诺森新材料科技有限公司 | Flexible bushing and aircraft propeller |
-
2011
- 2011-05-04 CN CN2011201379498U patent/CN202047948U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108425810A (en) * | 2017-05-24 | 2018-08-21 | 株洲时代新材料科技股份有限公司 | A kind of fan blade buffer unit |
| CN108425809A (en) * | 2017-05-24 | 2018-08-21 | 株洲时代新材料科技股份有限公司 | A kind of fan blade buffer unit |
| CN108644071A (en) * | 2017-05-24 | 2018-10-12 | 株洲时代新材料科技股份有限公司 | A kind of fan blade buffer unit |
| CN111417779A (en) * | 2017-12-04 | 2020-07-14 | 西门子歌美飒可再生能源公司 | Wind turbine and method for assembling a wind turbine |
| US11454207B2 (en) | 2017-12-04 | 2022-09-27 | Siemens Gamesa Renewable Energy A/S | Wind turbine and method for assembling a wind turbine |
| CN111417779B (en) * | 2017-12-04 | 2023-02-21 | 西门子歌美飒可再生能源公司 | Wind turbine and method for assembling a wind turbine |
| CN116062154A (en) * | 2023-01-03 | 2023-05-05 | 广州诺森新材料科技有限公司 | Flexible bushing and aircraft propeller |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111123 |