CN108869165B - Fan blade and method of assembling the same - Google Patents
Fan blade and method of assembling the same Download PDFInfo
- Publication number
- CN108869165B CN108869165B CN201710320597.1A CN201710320597A CN108869165B CN 108869165 B CN108869165 B CN 108869165B CN 201710320597 A CN201710320597 A CN 201710320597A CN 108869165 B CN108869165 B CN 108869165B
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- Prior art keywords
- blade
- root baffle
- baffle
- clamping plate
- wall
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- 238000000034 method Methods 0.000 title claims abstract description 11
- 230000002093 peripheral effect Effects 0.000 claims abstract description 6
- 239000004588 polyurethane sealant Substances 0.000 claims description 16
- 229920006335 epoxy glue Polymers 0.000 claims description 3
- 238000005336 cracking Methods 0.000 abstract description 5
- 238000010008 shearing Methods 0.000 abstract description 4
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 238000009434 installation Methods 0.000 description 4
- 238000010248 power generation Methods 0.000 description 3
- 230000003139 buffering effect Effects 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000002803 fossil fuel Substances 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 241000282414 Homo sapiens Species 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 230000010412 perfusion Effects 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 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
- F03D1/00—Wind motors with rotation axis substantially parallel to the air flow entering the rotor
- F03D1/06—Rotors
- F03D1/065—Rotors characterised by their construction elements
- F03D1/0675—Rotors characterised by their construction elements of the blades
-
- 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 and a method for assembling the same, the fan blade comprises a blade main body and a blade root baffle arranged in an inner cavity of the blade main body, wherein an elastic piece is arranged between the outer peripheral wall of the blade root baffle and the inner wall of the blade main body, the fan blade can effectively prevent the problem that the blade root baffle bears shearing stress to cause cracking due to the deformation of the blade, the safety of the blade root baffle is improved, and the service life of the fan blade is prolonged.
Description
Technical Field
The invention relates to the technical field of wind power generation, in particular to a fan blade and a method for assembling the same.
Background
In order to solve the environmental problems caused by the application of fossil fuels, human beings have vigorously developed novel energy sources which are friendly to the environment to replace the fossil fuels, wind energy is one of the novel energy sources which is vigorously developed, and the main mode of utilizing the wind energy at present is wind power generation.
As a wind power generation wind catching device, the blade of the wind power generator is of a cavity structure, and a blade root baffle plate for sealing the whole blade of the wind power generator is arranged at the blade root. In the operation process of the wind generating set, the problem of cracking of the blade root baffle often occurs, and the safe operation of the wind generating set is seriously influenced.
Accordingly, there is a need for a fan blade and method of assembling the same to address the problem of blade root baffle cracking.
Disclosure of Invention
The present invention is directed to a fan blade and a method of assembling the same, which solve some or all of the above-mentioned problems of the prior art. The elastic piece is arranged between the blade body and the blade root baffle of the fan blade instead of rigid connection adopted in the prior art, so that the problem that the blade root baffle bears shear stress to cause cracking due to blade deformation is effectively prevented.
According to a first aspect of the present invention, there is provided a fan blade comprising:
the main body of the blade is provided with a blade body,
a blade root baffle arranged in the inner cavity of the blade body,
wherein, set up the elastic component between the periphery wall of blade root baffle and the inner wall of blade main part.
In one embodiment, the outer diameter of the root baffle is 50-60 mm smaller than the inner diameter of the blade body.
In one embodiment, a first catch plate for defining a root baffle is provided on a first side of the resilient member and a second catch plate for defining a root baffle is provided on a second side of the resilient member in the internal cavity of the blade body.
In one embodiment, the resilient member is formed from a polyurethane sealant disposed between the root baffle and the blade body.
In one embodiment, the resilient member has a bottom wall disposed between the blade body and the outer peripheral wall of the root baffle, and a sidewall fixedly attached to the bottom wall extending radially inwardly of the root baffle.
In one embodiment, the ratio of the radial dimension of the portion of the sidewall overlapping the root baffle to the diameter of the root baffle is from 0.05 to 0.15.
In one embodiment, the sidewalls are configured as corrugated sheets alternating along circumferential peaks and valleys.
In one embodiment, a polyurethane sealant is injected between the first clamping plate and the blade root baffle, and/or a polyurethane sealant is injected between the second clamping plate and the blade root baffle.
In one embodiment, the polyurethane sealant is poured at a pressure of 1 to 1.5 mpa.
According to a second aspect of the present invention, there is provided a method of assembling a fan blade as described above, the root baffle being positioned by a plurality of circumferentially spaced cured blocks of epoxy glue.
Compared with the prior art, the fan blade has the advantages that the elastic piece is arranged between the outer peripheral wall of the blade body of the fan blade and the inner wall of the blade root baffle, and the rigid connection in the prior art is avoided, so that the problem that the blade root baffle bears shearing stress to cause cracking due to the deformation of the blade is effectively solved, the safety of the blade root baffle is improved, and the service life of the fan blade is prolonged.
Drawings
Preferred embodiments of the present invention will be described in detail below with reference to the attached drawing figures, wherein:
FIG. 1 shows a fan blade according to one embodiment of the present invention;
FIG. 2 is an enlarged view at A from FIG. 1;
in the drawings, like parts are provided with like reference numerals. The figures are not drawn to scale.
Detailed Description
The invention will be further explained with reference to the drawings.
Fig. 1 shows a fan blade 100 according to the invention. As shown in fig. 1, a wind turbine blade 100 includes a blade body 1 and a root baffle 2. Wherein the blade root baffle 2 is arranged in the cavity of the blade body 1 for sealing the opening of the blade root of the blade body 1. Set up elastic component 3 between the periphery wall of blade root baffle 2 and the inner wall of blade main part 1 to set up the buffering between blade main part 1 and blade root baffle 2, avoid or reduce and make blade root baffle 2 bear great shearing force because blade main part 1 warp, thereby improve fan blade 100's safety in utilization.
The outer diameter of the root baffle 2 is 50-60 mm, for example 55 mm, smaller than the inner diameter of the blade body 1. With this arrangement, the elastic member 3 having a certain thickness can be provided between the blade root baffle 2 and the blade body 1, thereby satisfying the design purpose.
The first clamping plate 4 and the second clamping plate 5 are arranged on two axial sides of the blade root baffle 2 and used for limiting the position of the blade root baffle 2 and increasing the stability of the blade root baffle. Wherein the first catch plate 4 is arranged on a first side of the resilient member 3, i.e. on a side close to the blade tip of the blade body 1, and the second catch plate 5 is arranged on a second side of the resilient member 3, i.e. on a side close to the blade root of the blade body 1. Preferably, the first catch plate 4 and the second catch plate 5 are both configured as rings and have an outer wall with a circular diameter dimension that is 18-22 mm, for example 20 mm, smaller than the inner diameter of the blade body 1 in the position in which they are located. That is, there is a gap of about 10 mm between the outer wall of the first card 4 and the blade body 1. Of course, there is also a gap of about 10 mm between the outer wall of the second card 5 and the blade body 1. Of course, while the first card 4 is constructed as described above, the second card 5 may be constructed in other configurations for ease of installation. For example, the second chucking plate 5 is constructed in an "L" -shaped plate structure, a long side thereof extends in the radial direction of the blade root baffle 2 and is disposed opposite to the blade root baffle 2, and a short side thereof extends in the blade root direction along the inner wall of the blade body 1. Further, a plurality of second chucking plates 5 may be provided at intervals in the circumferential direction of the root baffle 2. Through the arrangement, the size of the second clamping plate 5 can be relatively small, so that the installation and the positioning are flexible.
In one embodiment, the elastic member 3 is formed of a polyurethane sealant. That is, after the position between the root baffle 2 and the blade body 1 is positioned, a polyurethane sealant is provided therebetween to bond the two together. Because the polyurethane sealant has excellent elasticity after being cured, the polyurethane sealant has the function of reducing the shearing stress between the blade root baffle 2 and the blade main body 1.
In another embodiment, the elastic element 3 is configured as a flexible circular ring. Preferably, the elastic member 3 is made of silicone rubber. Specifically, the elastic member 3 includes a bottom wall 31 and two side walls 32. Wherein the side wall 32 is fixedly arranged on the bottom wall 31 and extends radially inwards so as to cover the outer circumference of the blade root baffle 2. Preferably, the ratio of the radial dimension of the portion of the sidewall 32 overlapping the root baffle 2 to the diameter of the root baffle 2 is 0.05 to 0.15. Through the arrangement, the elastic pieces can be arranged between the blade root baffle plate 2 and the first clamping plate 4 and the second clamping plate 5, so that the buffering effect is achieved. It is further preferred that the side walls 32 are configured as corrugated plates, and that the peaks and valleys of the corrugated plates alternate along the circumference of the side walls 32. This setting has utilized advantages such as buckled plate bearing capacity height, has increased the elastic deformation's between blade root plate washer 2 and first cardboard 4 and the second cardboard 5 ability to the safety in utilization of blade root plate washer 2 has been guaranteed.
And a polyurethane sealant is poured into the space between the first clamping plate 4 and the blade root baffle 2. Meanwhile, polyurethane sealant is also poured between the second clamping plate 5 and the blade root baffle 2. This kind of arrangement has increased the cohesive force between first cardboard 4 and second cardboard 5 and the blade root baffle 2 on the one hand, has improved the stability of each part, and on the other hand, this sealed glue of polyurethane has very good elasticity after solidifying, has further improved the buffer capacity between blade root baffle 2 and first cardboard 4 and the second cardboard 5.
Preferably, when the polyurethane sealant is poured between the first clamping plate 4 and the second clamping plate 5 and the blade root baffle 2, the pouring pressure is 1-1.5 MPa, for example, 1.3 MPa. In this way the perfusion effect can be improved. Especially, on the premise that the side wall 32 is a corrugated plate, the polyurethane sealant is pumped into the gaps between the side wall 32 and the first clamping plate 4 and the blade root baffle 2 as well as between the side wall 32 and the second clamping plate 5 and the blade root baffle 2, so that the adhesive force of adjacent parts is further increased, and the stability of the fan blade 100 is further improved.
The method of assembling the long fan blades 100 is described in detail below with respect to fig. 1-2.
First, the first card 4 is mounted. The mounting position of the first card 4 in the inner cavity of the blade body 1 is determined. This can be obtained with reference to the root end surface of the blade body 1. The first card 4 is padded with a cured block of epoxy glue such that the first card 4 is concentric with the blade body 1. Epoxy resin glue is adhered and filled between the blade body 1 and the first clamping plate 4. The end surfaces of the first clamping plate 4 on two sides are fixed with the inner wall of the blade main body 1 by using glass fiber cloth 6.
Next, the root baffle 2 is installed. The mounting position thereof is determined with reference to the first card 4. It should be noted that if the blade root baffle 2 is bonded to the blade body 1 by a polyurethane sealant, it may also be used with an epoxy curing block to define the location, and other bonding operations may also refer to the first clamping plate 4. If the elastic piece 3 in the sleeve shape is arranged on the outer wall of the blade root baffle 2, after the installation position is determined, the elastic piece 3 is sleeved on the blade root baffle 2 and placed at the installation position, and the peripheral wall of the elastic piece 3 is abutted to the inner wall of the blade body 1.
Finally, the second card 5 is mounted. In the installation process, the second clamping plate 5 and the blade main body 1 are fixed only by manually pasting the fiberglass cloth 6 on one side departing from the blade root baffle 2. The rest is the same as or similar to the mounting of the first card 4 and will not be described in detail here.
It should be noted that the above describes the mounting process of the first card 4 and the second card 5, but the blade root baffle 2 is expected to have better mounting stability. However, the first card 4 and the second card 5 may not be installed within the engineering tolerance.
In the present application, reference is made to the mounting position of the blade root baffle 2 for both "axial" and "radial".
The above is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily make changes or variations within the technical scope of the present invention disclosed, and such changes or variations should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (7)
1. A fan blade, comprising:
the main body of the blade is provided with a blade body,
a root baffle disposed in the interior cavity of the blade body,
wherein an elastic member is provided between the outer peripheral wall of the blade root baffle and the inner wall of the blade body,
an annular first clamping plate used for limiting the blade root baffle is arranged on the first side of the elastic piece in the inner cavity of the blade body, a second clamping plate used for limiting the blade root baffle is arranged on the second side of the elastic piece,
the elastic piece is provided with a bottom wall arranged between the blade body and the peripheral wall of the blade root baffle, and a side wall fixedly connected with the bottom wall and extending inwards along the radial direction of the blade root baffle, the side wall on the first side is arranged between the first clamping plate and the blade root baffle, and the side wall on the second side is arranged between the second clamping plate and the blade root baffle.
2. The fan blade of claim 1 wherein the outer diameter of the root baffle is 50-60 millimeters less than the inner diameter of the blade body.
3. The fan blade of claim 1 wherein the ratio of the radial dimension of the portion of the sidewall overlapping the root baffle to the diameter of the root baffle is 0.05 to 0.15.
4. The fan blade of claim 1 wherein the sidewalls are configured as corrugated sheets alternating along circumferential peaks and valleys.
5. The blower blade of claim 1, wherein a polyurethane sealant is injected between the first clamping plate and the root baffle, and/or a polyurethane sealant is injected between the second clamping plate and the root baffle.
6. The fan blade according to claim 5, wherein the polyurethane sealant is poured under a pressure of 1 to 1.5 MPa.
7. A method of assembling a wind turbine blade according to any of claims 1 to 6 wherein the root baffle is positioned by a plurality of circumferentially spaced cured blocks of epoxy glue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710320597.1A CN108869165B (en) | 2017-05-09 | 2017-05-09 | Fan blade and method of assembling the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710320597.1A CN108869165B (en) | 2017-05-09 | 2017-05-09 | Fan blade and method of assembling the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108869165A CN108869165A (en) | 2018-11-23 |
| CN108869165B true CN108869165B (en) | 2020-01-14 |
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ID=64287009
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710320597.1A Active CN108869165B (en) | 2017-05-09 | 2017-05-09 | Fan blade and method of assembling the same |
Country Status (1)
| Country | Link |
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| CN (1) | CN108869165B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111425355B (en) * | 2020-04-02 | 2021-07-02 | 连云港中复连众复合材料集团有限公司 | Assembling method of novel breathing port of megawatt wind driven generator blade |
| CN113103214B (en) * | 2021-04-09 | 2022-07-05 | 株洲时代新材料科技股份有限公司 | Wind power blade root baffle mounting equipment and mounting method |
| CN113074083B (en) * | 2021-04-22 | 2024-01-12 | 北京国电思达科技有限公司 | Blade root supporting structure and installation method thereof |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102797644B (en) * | 2012-08-22 | 2014-10-22 | 天津东汽风电叶片工程有限公司 | Blade root baffle plate and manufacturing method thereof, die special for clapboard and die special for manhole plate |
| CN104819105B (en) * | 2015-04-16 | 2018-04-27 | 北京金风科创风电设备有限公司 | Root baffle structure of fan blade and mounting method thereof |
| CN205877432U (en) * | 2016-07-04 | 2017-01-11 | 尹晓普 | A vertical pipeline gallows |
| CN206957872U (en) * | 2017-03-21 | 2018-02-02 | 中材科技风电叶片股份有限公司 | Blade root baffle and the attachment structure of blade root |
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| Publication number | Publication date |
|---|---|
| CN108869165A (en) | 2018-11-23 |
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Effective date of registration: 20240110 Address after: 412007 Haitian Road, Tianyuan District, Zhuzhou, Hunan Province, No. 18 Patentee after: ZHUZHOU TIMES NEW MATERIAL TECHNOLOGY Co.,Ltd. Patentee after: National University of Defense Technology Address before: 412007 Haitian Road, Tianyuan District, Zhuzhou, Hunan Province, No. 18 Patentee before: ZHUZHOU TIMES NEW MATERIAL TECHNOLOGY Co.,Ltd. |
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