CN108425810B - Fan blade buffer device - Google Patents
Fan blade buffer device Download PDFInfo
- Publication number
- CN108425810B CN108425810B CN201810498615.XA CN201810498615A CN108425810B CN 108425810 B CN108425810 B CN 108425810B CN 201810498615 A CN201810498615 A CN 201810498615A CN 108425810 B CN108425810 B CN 108425810B
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- China
- Prior art keywords
- fan blade
- bracket
- fan
- buffer
- side plate
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- Legal status (The legal status 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 status listed.)
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- 239000002184 metal Substances 0.000 claims description 18
- 238000013016 damping Methods 0.000 claims description 9
- 229920001971 elastomer Polymers 0.000 claims description 5
- 230000003139 buffering effect Effects 0.000 description 13
- 239000004033 plastic Substances 0.000 description 8
- 229920003023 plastic Polymers 0.000 description 8
- 230000007246 mechanism Effects 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000010521 absorption reaction Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 230000003014 reinforcing effect Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000005489 elastic deformation Effects 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000006855 networking Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 239000004568 cement Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D7/00—Controlling wind motors
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Abstract
The invention provides a fan blade buffer device which comprises a connecting part and a buffer part arranged on the connecting part. The damage to the wind generating set when the fan blade swings freely can be avoided, and therefore economic loss is avoided.
Description
Cross Reference to Related Applications
The present application claims priority from chinese patent application CN201710371167.2 entitled "a fan blade damping device" filed 24.5.2017, the entire contents of which are incorporated herein by reference.
Technical Field
The invention belongs to the technical field of wind power, and particularly relates to a fan blade buffering device.
Background
In a large-scale wind generating set, a variable pitch mechanism is often adopted to control the pitch of blades, and the variable pitch mechanism controls the installation angle of the blades to change along with the change of wind speed, so that the speed regulation before the networking of the generator is realized, the impact current during the networking is reduced, the output power can be kept relatively stable, and the generating capacity of a fan is improved. However, the pitch mechanism increases the failure rate of the wind turbine. If a transmission chain in the pitch control mechanism breaks down, the blades can swing freely, and the blades can collide with a tower of a fan when swinging freely, so that the blades and the wind generating set are damaged, and great economic loss is generated.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a fan blade buffer device to avoid the damage to a wind generating set when a fan blade swings freely, thereby avoiding economic loss.
In order to solve the technical problems, the technical scheme provided by the invention is as follows:
a fan blade damping device comprises a connecting part and a damping part arranged on the connecting part.
The fan blade buffering device composed of the connecting component and the buffering component is arranged on the fan blade, and when the fan blade freely swings beyond a limited range due to failure of a transmission chain of a fan variable pitch mechanism, the buffering device can collide with a fan hub to effectively absorb collision energy, so that damage to a fan unit due to free swing of the fan blade is avoided.
With respect to the above technical solution, further improvements as described below can be made.
According to the fan blade buffering device, in a preferred embodiment, the buffering component comprises a first buffering component and a detachable buffering pad arranged on the first buffering component.
Through multistage buffer unit, can further ensure buffer and effectively absorb blade collision energy to the damage to fan group that has avoided blade free swing to the bigger degree to lead to the fact.
Further, in a preferred embodiment, the first buffer member is a metal frame, and the cushion pad is a rubber pad.
The buffer device is provided with elastic deformation of glue and plastic deformation of metal, and the buffer capacity of the buffer device is improved. The buffer metal frame continues to deform after the rubber deforms, so that the collision time of the buffer device with the fan hub in collision is prolonged, and the collision force is correspondingly reduced according to impulse and momentum theorem, so that the buffer device has the advantage of low impedance and protects other parts. And the metal frame generates plastic deformation after collision, so that the corresponding force energy is converted into heat energy to be consumed, and the energy absorption efficiency of the buffer device is high.
Further, in a preferred embodiment, the metal frame includes a first bracket and a second bracket, and the first bracket is connected with the second bracket to form a hollow frame. The metal frame configured as a hollow frame can improve plastic deformation of metal as much as possible to improve the cushioning capacity of the cushioning device.
Specifically, in a preferred embodiment, the first bracket includes a bottom plate, and first and second side plates extending from both ends of the bottom plate, respectively, substantially parallel to each other, and the cushion pad is disposed on the second side plate. The structure of the first bracket is simple as much as possible, so that the first bracket is simple and convenient to mount, produce and manufacture, and accordingly the cost can be reduced.
In particular, in a preferred embodiment, the second bracket is configured as a circular arc-shaped plate, which is connected to the first side plate and the second side plate, respectively. The structure form is beneficial to realizing the formation of the hollow elastic structure in a limited space, is beneficial to increasing the buffering capacity of the buffer and reducing the impedance force in the impact process. Meanwhile, the hollow structure is formed, so that the rigidity of the buffer device is reduced, the metal plastic deformation is facilitated to absorb energy, the energy absorption efficiency is improved, and the purpose of protecting the wind generating set is achieved.
Further, in a preferred embodiment, the circular arc shaped plate comprises a hollow area. The first bracket, which is configured as a circular arc-shaped plate structure having a hollow region, can reduce the weight as much as possible while the strength of the bracket will be ensured.
Further, in a preferred embodiment, the bottom surface of the first bracket is provided with a plurality of uniformly spaced ribs extending in the width direction of the bottom surface.
The bottom surface of the first support is provided with the reinforcing ribs, so that the connection strength and reliability between the first support and the connecting part can be guaranteed.
Further, in a preferred embodiment, the connection member is configured as a sheet structure having a portion forming a fit with the fan pitch bearing. The structure form can ensure that the connecting part is extremely conveniently arranged on the fan variable pitch bearing, and the structure of the connecting part can be simplified as much as possible, so that the production and manufacturing cost is reduced.
Further, in a preferred embodiment, the connecting part is provided with a mounting hole which is matched with the fan pitch bearing for mounting.
The buffer device is arranged on the fan variable pitch bearing in a detachable mounting mode, so that the buffer device can be mounted and replaced simply and quickly.
Compared with the prior art, the invention has the advantages that: the damage to the wind generating set when the fan blade swings freely can be avoided, and therefore economic loss is avoided.
Drawings
The invention will be described in more detail hereinafter on the basis of embodiments and with reference to the accompanying drawings. Wherein:
FIG. 1 schematically illustrates an installation of a fan blade damper according to an embodiment of the present invention;
FIG. 2 schematically illustrates the overall construction of a fan blade damping arrangement in accordance with an embodiment of the present invention;
FIG. 3 is a view schematically showing a partial structure of a fan blade damper according to an embodiment of the present invention;
FIG. 4 schematically illustrates a first cushioning component of an embodiment of the present invention.
In the drawings, like parts are provided with like reference numerals. The drawings are not to scale.
Detailed Description
The invention will be further explained in detail with reference to the figures and the embodiments without thereby limiting the scope of protection of the invention.
FIG. 1 schematically illustrates an installation of a fan blade damper 10 in accordance with an embodiment of the present invention. Fig. 2 schematically shows the overall structure of the fan blade damper 10 according to the embodiment of the present invention. Fig. 3 schematically shows a partial structure of the fan blade damper 10 according to the embodiment of the present invention. Fig. 4 schematically shows the first cushioning member 21 of the embodiment of the present invention.
As shown in fig. 1 to 3, a fan blade damper device 10 of an embodiment of the present invention includes a connection member 1 and a damper member 2 disposed on the connection member 1. According to the embodiment of the invention, the fan blade buffer device is arranged on the fan blade, and when the fan blade freely swings beyond a limited range due to failure of a transmission chain of a fan variable pitch mechanism, the buffer device can collide with a fan hub to effectively absorb collision energy, so that damage to a wind generating set caused by free swing of the blade is avoided. In a preferred embodiment, the cushioning component 2 includes a first cushioning component 21 and a removable cushion 22 disposed on the first cushioning component 21. Through the multistage buffer parts, the buffer device can be further ensured to effectively absorb the collision energy of the blades, so that the damage to the wind generating set caused by the free swing of the blades is avoided to a greater extent. Specifically, cushion pad 22 is typically coupled to first cushioning member 21 using a bolt 6 and nut 7 connection.
In the present embodiment, as shown in fig. 1 to 3, the first cushioning member 21 is configured as a metal frame, and the cushion pad 22 is configured as a rubber pad. The cushion pad 22 may be made of polyurethane, elastic cement, or the like. The buffer device is provided with elastic deformation of glue and plastic deformation of metal, and the buffer capacity of the buffer device is improved. The buffer metal frame continues to deform after the rubber deforms, so that the collision time of the buffer device with the fan hub in collision is prolonged, and the collision force is correspondingly reduced according to impulse and momentum theorem, so that the buffer device has the advantage of low impedance and protects other parts. And the metal frame generates plastic deformation after collision, so that the corresponding force energy is converted into heat energy to be consumed, and the energy absorption efficiency of the buffer device is high.
As shown in fig. 4, in a preferred embodiment, the metal frame includes a first bracket 211 and a second bracket 212, and the first bracket 211 is connected with the second bracket 212 to form a hollow frame. The metal frame configured as a hollow frame can improve plastic deformation of metal as much as possible to improve the cushioning capacity of the cushioning device. Specifically, in a preferred embodiment, the first bracket 211 includes a bottom plate 2111, and first and second side plates 2112 and 2113 extending from both ends of the bottom plate 2111, respectively, substantially parallel to each other, and the cushion pad 22 is disposed on the second side plate 2113. The bottom plate 2111 is horizontally disposed, and two ends of the bottom plate are respectively bent to extend out of the first side plate 2112 and the second side plate 2113. The structure of the first bracket is simple as much as possible, so that the first bracket is simple and convenient to mount, produce and manufacture, and accordingly the cost can be reduced.
Specifically, in a preferred embodiment, as shown in fig. 4, the second bracket 212 is configured as a circular arc-shaped plate that is connected to the first side plate 2112 and the second side plate 2113, respectively. The structure form is beneficial to realizing the formation of the hollow elastic structure in a limited space, is beneficial to increasing the buffering capacity of the buffer and reducing the impedance force in the impact process. Meanwhile, the hollow structure is formed, so that the rigidity of the buffer device is reduced, the metal plastic deformation is facilitated to absorb energy, the energy absorption efficiency is improved, and the purpose of protecting the wind generating set is achieved. Further, in a preferred embodiment, the circular arc shaped plate comprises a hollow area. The first bracket, which is configured as a circular arc-shaped plate structure having a hollow region, can reduce the weight as much as possible while the strength of the bracket will be ensured.
Further, in a preferred embodiment, as shown in fig. 3, a bottom surface of the first bracket 211 is provided with a plurality of reinforcing ribs 3 uniformly spaced apart and extending in a width direction of the bottom surface. The bottom surface of the first support is provided with the reinforcing ribs, so that the connection strength and reliability between the first support and the connecting part can be guaranteed. In order to further increase the strength and reliability of the connection between the first bracket and the connecting part, in a preferred embodiment, a reinforcing rib 3 is provided on the connecting part 1 in connection with the surface of the first side plate 2112 facing away from the second side plate 2113.
In the present embodiment, the connection member 1 is configured as a sheet structure having a portion that forms a fit with the fan pitch bearing 4, as shown in fig. 2 and 3. The structure form can ensure that the connecting part is extremely conveniently arranged on the fan variable pitch bearing, and the structure of the connecting part can be simplified as much as possible, so that the production and manufacturing cost is reduced. Further, in a preferred embodiment, for simple installation and maintenance, and for the damping device to be used in an already installed fan, the connection part 1 is provided with a mounting hole 5 which is fitted with the fan pitch bearing 4. The buffer device is arranged on the fan variable pitch bearing in a detachable mounting mode, so that the buffer device can be mounted and replaced simply and quickly.
According to the embodiment, the fan blade buffering device is arranged on the variable pitch bearing of the fan, and the whole buffering device rotates along with the rotation of the variable pitch bearing. When the fan blade freely swings beyond a limited range and collides with a fan tower barrel due to failure of a transmission chain of a fan variable pitch mechanism, a cushion pad on the buffer device can collide with a fan hub to effectively absorb collision energy, so that damage to a wind generating set caused by free swing of the blade is avoided, and economic loss can be avoided.
While the invention has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. It is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (5)
1. A fan blade cushioning device is characterized by comprising a connecting part and a cushioning part arranged on the connecting part;
the buffer component comprises a first buffer component and a detachable buffer pad arranged on the first buffer component;
the first buffer component is a metal frame, and the buffer pad is a rubber pad;
the metal frame comprises a first bracket and a second bracket; the first bracket and the second bracket are connected to form a hollow frame;
the first bracket comprises a bottom plate, a first side plate and a second side plate which are approximately parallel to each other and respectively extend from two ends of the bottom plate, and the buffer cushion is arranged on the second side plate;
the second support is constructed as an arc-shaped plate, and the arc-shaped plate is connected with the first side plate and the second side plate respectively.
2. The fan blade damping device of claim 1, wherein the circular arc plate comprises a hollow region.
3. The fan blade damping device according to claim 1 or 2, wherein the bottom surface of the first support is provided with a plurality of uniformly spaced ribs extending in the width direction of the bottom surface.
4. The fan blade damping arrangement according to claim 1 or 2, wherein the connection member is configured as a sheet structure having a portion forming a fit with the fan pitch bearing.
5. The fan blade damping device according to claim 1 or 2, wherein the connection member is provided with a mounting hole for fitting with a fan pitch bearing.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710371167 | 2017-05-24 | ||
| CN2017103711672 | 2017-05-24 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108425810A CN108425810A (en) | 2018-08-21 |
| CN108425810B true CN108425810B (en) | 2020-01-14 |
Family
ID=63163854
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810498615.XA Active CN108425810B (en) | 2017-05-24 | 2018-05-23 | Fan blade buffer device |
| CN201810498590.3A Active CN108425809B (en) | 2017-05-24 | 2018-05-23 | Fan blade buffer device |
| CN201810498531.6A Active CN108644071B (en) | 2017-05-24 | 2018-05-23 | Fan blade buffer device |
Family Applications After (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810498590.3A Active CN108425809B (en) | 2017-05-24 | 2018-05-23 | Fan blade buffer device |
| CN201810498531.6A Active CN108644071B (en) | 2017-05-24 | 2018-05-23 | Fan blade buffer device |
Country Status (1)
| Country | Link |
|---|---|
| CN (3) | CN108425810B (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201568208U (en) * | 2009-10-26 | 2010-09-01 | 华锐风电科技(集团)股份有限公司 | Variable pitch limiting device of wind turbine generator system |
| GB201020977D0 (en) * | 2010-12-10 | 2011-01-26 | Nordic Windpower Ltd | Buffer device |
| CN202047948U (en) * | 2011-05-04 | 2011-11-23 | 株洲时代新材料科技股份有限公司 | Elastic element for warping board hub of two-blade wind power generator unit |
| CN104389746B (en) * | 2014-10-16 | 2017-11-07 | 新疆金风科技股份有限公司 | The impeller and wind power generating set of wind power generating set |
| CN205876597U (en) * | 2016-07-28 | 2017-01-11 | 株洲时代新材料科技股份有限公司 | Wind -driven generator |
-
2018
- 2018-05-23 CN CN201810498615.XA patent/CN108425810B/en active Active
- 2018-05-23 CN CN201810498590.3A patent/CN108425809B/en active Active
- 2018-05-23 CN CN201810498531.6A patent/CN108644071B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN108644071A (en) | 2018-10-12 |
| CN108425810A (en) | 2018-08-21 |
| CN108425809B (en) | 2020-01-14 |
| CN108425809A (en) | 2018-08-21 |
| CN108644071B (en) | 2020-01-14 |
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