CN108644071B - Fan blade buffer device - Google Patents
Fan blade buffer device Download PDFInfo
- Publication number
- CN108644071B CN108644071B CN201810498531.6A CN201810498531A CN108644071B CN 108644071 B CN108644071 B CN 108644071B CN 201810498531 A CN201810498531 A CN 201810498531A CN 108644071 B CN108644071 B CN 108644071B
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- Prior art keywords
- metal frame
- buffer
- fan blade
- metal
- fan
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- 229910052751 metal Inorganic materials 0.000 claims abstract description 103
- 239000002184 metal Substances 0.000 claims abstract description 103
- 230000003139 buffering effect Effects 0.000 claims abstract description 26
- 238000013016 damping Methods 0.000 claims description 19
- 229910052782 aluminium Inorganic materials 0.000 claims description 11
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 11
- 229920002635 polyurethane Polymers 0.000 claims description 8
- 239000004814 polyurethane Substances 0.000 claims description 8
- 230000000903 blocking effect Effects 0.000 claims description 6
- 230000003014 reinforcing effect Effects 0.000 claims description 5
- 229910001209 Low-carbon steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000004033 plastic Substances 0.000 abstract description 13
- 229920003023 plastic Polymers 0.000 abstract description 13
- 230000000694 effects Effects 0.000 abstract description 11
- 230000005489 elastic deformation Effects 0.000 abstract description 8
- 230000007246 mechanism Effects 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 8
- 238000010521 absorption reaction Methods 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000001413 cellular effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 150000002739 metals Chemical class 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
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000013521 mastic Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
Images
Classifications
-
- 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
-
- 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
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention provides a fan blade buffer device which comprises a connecting part and a buffer part arranged on the connecting part, wherein the buffer part comprises a metal frame and a detachable buffer pad arranged on the top surface of the metal frame, and a third buffer part is arranged in the metal frame. Can avoid fan blade free swing the time to wind generating set's damage to avoid economic loss, can combine the elastic deformation of blotter and metal frame's plastic deformation and the buffer capacity of third buffering part, improve buffer's buffer capacity, and have low impedance, the efficient effect of energy-absorbing.
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 buffering device comprises a connecting part and a buffering part arranged on the connecting part, wherein the buffering part comprises a metal frame and a detachable buffering cushion arranged on the top surface of the metal frame, and a third buffering part is arranged in the metal frame.
The fan blade buffer device provided by the invention is arranged on a variable pitch bearing of a fan, and the whole buffer device rotates along with the rotation of the variable pitch bearing. When the fan blade freely swings beyond the limited range due to failure of a transmission chain of the fan variable pitch mechanism, the buffer device can collide with the fan hub to effectively absorb collision energy, so that damage to the wind generating set due to free swing of the blade is avoided. The structure that the buffer part adopts the metal frame and arranges the third buffer part in the metal frame and arranges the blotter on the top surface of the metal frame can combine the elastic deformation of the blotter and the plastic deformation of the metal frame and the buffer capacity of the third buffer part, improve the buffer capacity of the buffer device, and have low impedance, the efficient effect of energy-absorbing.
With respect to the above technical solution, further improvements as described below can be made.
According to the fan blade damping device of the present invention, in a preferred embodiment, the third damping member includes a metal pipe. The buffering component adopts the metal frame, the metal pipe arranged in the metal frame and the buffering cushion arranged on the top surface of the metal frame, and the structure can combine the elastic deformation of the buffering cushion and the plastic deformation of the metal frame and the metal pipe, improve the buffering capacity of the buffering device, and has the effects of low impedance and high energy absorption efficiency.
Further, in a preferred embodiment, several metal tubes are arranged side by side within the metal frame. Through setting up many tubular metals, can increase buffer's plastic deformation space to further improve buffer's buffer capacity.
Further, in a preferred embodiment, the length of the metal tube is equal to the length of the metal frame. The length of the metal pipe is set to be the same as the length of the metal frame, so that the damage to the fan caused by the buffer device in the collision process due to the overlong metal pipe can be avoided, in addition, the buffer effect is not influenced due to insufficient plastic deformation space caused by the overlong length of the metal pipe, and the metal pipe is inconvenient to fix in the metal frame due to the overlong length of the metal pipe.
Further, in a preferred embodiment, the metal frame has openings on both sides, at which at least one blocking positioning element is arranged. The openings are arranged on the two sides of the metal frame, so that on one hand, the weight of the buffer device can be reduced on the premise of ensuring the strength, on the other hand, the arrangement of the metal pipe can be extremely convenient and simple, and the metal pipe can be very firmly fixed in the metal frame by arranging the blocking type positioning piece.
Specifically, in a preferred embodiment, the metal tube is made of a low carbon steel material or a stainless steel material. The thin-wall metal round tubes are light in weight and easy to machine and assemble, so that the thin-wall metal round tubes have good economical efficiency, the product competitiveness is improved, the thin-wall metal round tubes have good energy absorption effect, and the buffer capacity can be greatly improved.
Further, in another preferred embodiment, the third cushioning component comprises a honeycomb aluminum sheet. The structure of the honeycomb aluminum plate can reduce the weight of the buffer device as much as possible on the premise of improving the buffer capacity, and in addition, the structural installation of the honeycomb aluminum plate is more convenient, so that the production and manufacturing cost can be saved.
Further, in another preferred embodiment, the third cushioning component comprises a polyurethane sheet. The structure of polyurethane board can make buffer can further improve buffer capacity, also can be greatly to the degree simultaneously reduce buffer's weight, and in addition, the structural mounting of polyurethane board is more convenient, consequently can also save production manufacturing cost.
Further, in a preferred embodiment, a reinforcing rib connected to the bottom surface of the metal frame is provided on the connecting member.
The reinforcing ribs are arranged between the connecting parts and the metal frame, so that the connecting strength and the reliability between the metal frame and the connecting parts can be further improved.
Specifically, in a preferred embodiment, the cushion pad is connected to the metal frame by means of bolt and nut connections. The bolt and nut connection mode is adopted, so that the cushion pad is extremely simple and convenient to mount and dismount.
Further, in a preferred embodiment, the connection member is formed as a plate having a portion for forming a fit with the fan pitch bearing, and the metal frame extends perpendicular to the plate. The plate structure form with the part matched with the fan variable-pitch bearing can simplify the structure of the connecting part as much as possible, and the connecting part is particularly applicable to the installed fan.
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: can avoid fan blade free swing the time to wind generating set's damage to avoid economic loss, can combine the elastic deformation of blotter and metal frame's plastic deformation and the buffer capacity of third buffering part, improve buffer's buffer capacity, and have low impedance, the efficient effect of energy-absorbing.
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 shows the overall structure of a fan blade damper device according to embodiment 1 of the present invention;
fig. 2 schematically shows a partial structure of a fan blade damper device according to embodiment 1 of the present invention;
fig. 3 schematically shows the overall structure of a fan blade damper device according to embodiment 2 of the present invention;
fig. 4 schematically shows the structure of the honeycomb aluminum sheet of example 2 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.
Example 1
FIG. 1 schematically illustrates the overall construction of a fan blade damper 10 in accordance with an embodiment of the present invention; fig. 2 schematically shows a partial structure of a fan blade damper 10 according to an embodiment of the present invention.
As shown in fig. 1 and 2, a fan blade damping device 10 according to an embodiment of the present invention includes a connection member 1 and a damping member 2 disposed on the connection member 1, the damping member 2 includes a metal frame 21, and a detachable cushion 22 disposed on a top surface of the metal frame 21, wherein a third damping member 23 is disposed in the metal frame 21. Preferably, the third buffer member 23 includes a metal pipe 231. According to the embodiment of the invention, the fan blade buffer device is arranged on the variable pitch bearing of the fan, and the whole buffer device rotates along with the rotation of the variable pitch bearing. When the fan blade freely swings beyond the limited range due to failure of a transmission chain of the fan variable pitch mechanism, the buffer device can collide with the fan hub to effectively absorb collision energy, so that damage to the wind generating set due to free swing of the blade is avoided. The buffering component adopts the metal frame, the metal pipe arranged in the metal frame and the buffering cushion arranged on the top surface of the metal frame, and the structure can combine the elastic deformation of the buffering cushion and the plastic deformation of the metal frame and the metal pipe, improve the buffering capacity of the buffering device, and has the effects of low impedance and high energy absorption efficiency.
In a preferred embodiment of the fan blade damping device 10 according to the embodiment of the present invention, as shown in fig. 2, a plurality of metal tubes 231 are arranged side by side in a metal frame 21. Through setting up many tubular metals, can increase buffer's plastic deformation space to further improve buffer's buffer capacity. Further, in a preferred embodiment, the length of the metal tube 231 is equal to the length of the metal frame 21. The length of the metal pipe is set to be the same as the length of the metal frame, so that the damage to the fan caused by the buffer device in the collision process due to the overlong metal pipe can be avoided, in addition, the buffer effect is not influenced due to insufficient plastic deformation space caused by the overlong length of the metal pipe, and the metal pipe is inconvenient to fix in the metal frame due to the overlong length of the metal pipe.
Further, as shown in fig. 1, in a preferred embodiment, the metal frame 21 has openings 211 at both sides, and at least one blocking type positioning member 24 is disposed at the openings 211. The openings are arranged on the two sides of the metal frame, so that on one hand, the weight of the buffer device can be reduced on the premise of ensuring the strength, on the other hand, the arrangement of the metal pipe can be extremely convenient and simple, and the metal pipe can be very firmly fixed in the metal frame by arranging the blocking type positioning piece. Preferably, the blocking positioning member 24 includes a bolt 3 and a nut 4.
Specifically, in a preferred embodiment, the metal tube 231 and the metal frame 21 are made of a low carbon steel material or a stainless steel material. The thin-wall metal round tubes are light in weight and easy to machine and assemble, so that the thin-wall metal round tubes have good economical efficiency, the product competitiveness is improved, the thin-wall metal round tubes have good energy absorption effect, and the buffer capacity can be greatly improved.
In the present embodiment, as shown in fig. 1 and 2, it is preferable that the connecting member 1 is provided with a reinforcing rib 5 connected to the bottom surface of the metal frame 21. The reinforcing ribs are arranged between the connecting parts and the metal frame, so that the connecting strength and the reliability between the metal frame and the connecting parts can be further improved. Specifically, in a preferred embodiment, the cushion pad 22 is connected to the metal frame 21 by means of bolt and nut connection. The bolt and nut connection mode is adopted, so that the cushion pad is extremely simple and convenient to mount and dismount.
Further, as shown in fig. 1 and 2, in a preferred embodiment the connection part 1 is formed as a plate having a portion forming a fit with the fan pitch bearing, and the metal frame extends perpendicular to the plate. The plate structure form with the part matched with the fan variable-pitch bearing can simplify the structure of the connecting part as much as possible, and the connecting part is particularly applicable to the installed fan. Further, in a preferred embodiment, the connecting part 1 is provided with a mounting hole 6 which is in bearing fit with a fan pitch shaft 7. 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, and the buffer device is more practical for the installed fan.
In the present embodiment, the cushion pad 22 is preferably a rubber pad. The cushion pad 22 may also be made of polyurethane, elastomeric mastic, 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.
Example 2
Fig. 3 schematically shows the overall structure of a fan blade damper device 20 according to embodiment 2 of the present invention. Fig. 4 schematically shows the structure of the honeycomb aluminum sheet of example 2 of the present invention.
As shown in fig. 3 and 4, a fan blade damping device 20 according to an embodiment of the present invention includes a connection member 1 and a damping member 2 disposed on the connection member 1, the damping member 2 includes a metal frame 21, and a detachable cushion 22 disposed on a top surface of the metal frame 21, wherein a third damping member 23 is disposed in the metal frame 21. Preferably, the third buffer member 23 includes a honeycomb-shaped aluminum plate 232.
According to the embodiment of the invention, the fan blade buffer device is arranged on the variable pitch bearing of the fan, and the whole buffer device rotates along with the rotation of the variable pitch bearing. When the fan blade freely swings beyond the limited range due to failure of a transmission chain of the fan variable pitch mechanism, the buffer device can collide with the fan hub to effectively absorb collision energy, so that damage to the wind generating set due to free swing of the blade is avoided. The buffering part adopts the metal framework and arranges the cellular aluminum plate in the metal framework and arranges this kind of structure of blotter on the top surface of metal framework can combine the elastic deformation of blotter and metal framework's plastic deformation and cellular aluminum plate's buffer capacity, improves buffer to have low impedance, the efficient effect of energy-absorbing. The structure of the honeycomb aluminum plate can reduce the weight of the buffer device as much as possible on the premise of improving the buffer capacity, and in addition, the structural installation of the honeycomb aluminum plate is more convenient, so that the production and manufacturing cost can be saved.
In an embodiment not shown, the only difference from the above-described embodiments 1 and 2 is that the third cushioning member is of a polyurethane plate structure. The structure of polyurethane board can make buffer can further improve buffer capacity, also can be greatly to the degree simultaneously reduce buffer's weight, and in addition, the structural mounting of polyurethane board is more convenient, consequently can also save production manufacturing cost.
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 the limited range due to failure of a transmission chain of the fan variable pitch mechanism, the buffer device can collide with the fan hub to effectively absorb collision energy, so that damage to the wind generating set caused by free swing of the blade is avoided, in addition, the buffer device can combine elastic deformation of the buffer cushion, plastic deformation of the metal frame and the buffer capacity of the third buffer component, the buffer capacity of the buffer device is improved, and the fan variable pitch mechanism has the effects of low impedance and high energy absorption efficiency.
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 (6)
1. A fan blade buffering device is characterized by comprising a connecting part and a buffering part arranged on the connecting part, wherein the buffering part comprises a metal frame and a detachable buffering cushion arranged on the top surface of the metal frame, and a third buffering part is arranged in the metal frame;
the third buffer part comprises at least more than two metal tubes which are arranged side by side;
the length of the metal tube is equal to that of the metal frame;
openings are formed in two sides of the metal frame, and at least one blocking type positioning piece is arranged at each opening;
the metal pipe is made of low-carbon steel or stainless steel.
2. The fan blade damping device of claim 1, wherein the third damping member comprises a honeycomb aluminum sheet.
3. The fan blade damping device of claim 1 or 2, wherein the third damping component comprises a polyurethane sheet.
4. The fan blade damping device according to claim 1 or 2, wherein a reinforcing rib connected to a bottom surface of the metal frame is provided on the connection member.
5. The fan blade damping arrangement according to claim 1 or 2, wherein the connection member is formed as a plate having a portion for forming a fit with a fan pitch bearing, the metal frame extending perpendicular to the plate.
6. 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 |
|---|---|---|---|
| CN2017103711672 | 2017-05-24 | ||
| CN201710371167 | 2017-05-24 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108644071A CN108644071A (en) | 2018-10-12 |
| CN108644071B true CN108644071B (en) | 2020-01-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810498531.6A Active CN108644071B (en) | 2017-05-24 | 2018-05-23 | Fan blade buffer device |
| 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 |
Family Applications After (2)
| 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 |
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| Country | Link |
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| CN (3) | CN108644071B (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 CN201810498531.6A patent/CN108644071B/en active Active
- 2018-05-23 CN CN201810498615.XA patent/CN108425810B/en active Active
- 2018-05-23 CN CN201810498590.3A patent/CN108425809B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN108425809B (en) | 2020-01-14 |
| CN108425809A (en) | 2018-08-21 |
| CN108425810A (en) | 2018-08-21 |
| CN108425810B (en) | 2020-01-14 |
| CN108644071A (en) | 2018-10-12 |
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