CN111692041A - Flexible inflatable wind power generation blade and preparation method thereof - Google Patents
Flexible inflatable wind power generation blade and preparation method thereof Download PDFInfo
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- CN111692041A CN111692041A CN202010599498.3A CN202010599498A CN111692041A CN 111692041 A CN111692041 A CN 111692041A CN 202010599498 A CN202010599498 A CN 202010599498A CN 111692041 A CN111692041 A CN 111692041A
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- 238000010248 power generation Methods 0.000 title claims abstract description 111
- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- 239000004744 fabric Substances 0.000 claims abstract description 96
- 239000011347 resin Substances 0.000 claims description 41
- 229920005989 resin Polymers 0.000 claims description 41
- 125000006850 spacer group Chemical group 0.000 claims description 25
- 239000011248 coating agent Substances 0.000 claims description 20
- 238000000576 coating method Methods 0.000 claims description 20
- 238000007789 sealing Methods 0.000 claims description 18
- 229920006253 high performance fiber Polymers 0.000 claims description 15
- 229920002635 polyurethane Polymers 0.000 claims description 10
- 239000004814 polyurethane Substances 0.000 claims description 10
- 238000005260 corrosion Methods 0.000 claims description 8
- 230000007797 corrosion Effects 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 8
- 239000004699 Ultra-high molecular weight polyethylene Substances 0.000 claims description 7
- 239000000835 fiber Substances 0.000 claims description 7
- 229920000728 polyester Polymers 0.000 claims description 7
- 229920000785 ultra high molecular weight polyethylene Polymers 0.000 claims description 7
- 239000003973 paint Substances 0.000 claims description 5
- 239000002657 fibrous material Substances 0.000 claims description 4
- 230000001070 adhesive effect Effects 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims 4
- 239000004593 Epoxy Substances 0.000 claims 2
- 239000000463 material Substances 0.000 abstract description 9
- 238000004134 energy conservation Methods 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 56
- 239000003822 epoxy resin Substances 0.000 description 9
- 229920000647 polyepoxide Polymers 0.000 description 9
- 239000002344 surface layer Substances 0.000 description 9
- 239000011152 fibreglass Substances 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000009940 knitting Methods 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 238000009941 weaving Methods 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 239000000805 composite resin Substances 0.000 description 1
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- 238000005516 engineering process Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- -1 for example Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920003225 polyurethane elastomer Polymers 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
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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
- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D99/00—Subject matter not provided for in other groups of this subclass
- B29D99/0025—Producing blades or the like, e.g. blades for turbines, propellers, or wings
- B29D99/0028—Producing blades or the like, e.g. blades for turbines, propellers, or wings hollow blades
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2280/00—Materials; Properties thereof
- F05B2280/60—Properties or characteristics given to material by treatment or manufacturing
- F05B2280/6001—Fabrics
- F05B2280/6002—Woven fabrics
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2280/00—Materials; Properties thereof
- F05B2280/60—Properties or characteristics given to material by treatment or manufacturing
- F05B2280/6011—Coating
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2280/00—Materials; Properties thereof
- F05B2280/60—Properties or characteristics given to material by treatment or manufacturing
- F05B2280/6015—Resin
-
- 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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Wind Motors (AREA)
Abstract
The invention discloses a flexible inflatable wind power generation blade and a preparation method thereof, and belongs to the technical field of wind power generation. The flexible inflatable wind power generation blade comprises: the flexible film outer layer and the variable-gauge spacing fabric inner layer are arranged, the external shape of the variable-gauge spacing fabric inner layer is the shape of the wind power generation blade, the flexible film outer layer and the variable-gauge spacing fabric inner layer form the flexible inflatable wind power generation blade through bonding, the flexible inflatable wind power generation blade can be curled randomly before being inflated, the transportation is convenient, the wind power generation blade can have certain shape and rigidity after being inflated due to the existence of spacing wires or spacing yarns, the existing wind power generation blade made of hard materials is completely replaced, and therefore the flexible inflatable wind power generation blade has the advantages of energy conservation, high efficiency, convenience in operation, strong applicability and benefit for the transportation and loading and unloading of the wind power generation blade.
Description
Technical Field
The invention relates to a flexible inflatable wind power generation blade and a preparation method thereof, and belongs to the technical field of wind power generation.
Background
Wind energy is taken as a clean renewable energy source, huge energy is accumulated in the wind energy source, and the global wind energy resource can be developed as a clean renewable energy source; meanwhile, clean renewable wind energy is also paid more and more attention from countries around the world. With the development of the world economy, the wind energy market is rapidly developed; there is no doubt that the prospect of wind power generation will be better and better in the future. The traditional wind power generation blades are all made of hard materials and are large in size and heavy in weight; although light wind power generation blades prepared by fabric composite resin exist, the wind power generation blades are still hard materials, and are large in size, difficult to transport and difficult to disassemble and assemble.
In order to solve the problem of difficult transportation and disassembly, the technology of preparing the wind power generation blade by using the spacer fabric is adopted at present, the spacer fabric is mainly utilized to weave to obtain a bearing body in the shape of the wind power generation blade, then resin or foam wood and the like are filled into the spacer yarn fabric to be used as sandwich materials to improve the mechanical strength of the wind power generation blade, and meanwhile, compared with the wind power generation blade made of metal materials, the sandwich materials of the resin, the foam or the wood also reduce the weight of the wind power generation blade; after the sandwich material is filled, the weather resistance requirement of the wind power generation blade is considered, and the resin with certain weather resistance is coated on the outer side of the spacer yarn fabric in the shape of the wind power generation blade, so that the prepared wind power generation blade has the characteristics of corrosion resistance, high temperature resistance and the like in the wild environment.
However, the weight of the prepared wind power generation blade is reduced on the premise of meeting the requirements of the wind power generation blade, but the volume of the wind power generation blade is not reduced, and the problem of inconvenient transportation still exists in the process of completing transportation to an installation site.
Disclosure of Invention
In order to solve the problem that the volume of the existing wind power generation blade is inconvenient to transport, the invention provides the flexible inflatable wind power generation blade and the preparation method thereof.
A flexible inflatable wind power blade, comprising: the flexible film outer layer and the variable-spacing fabric inner layer are in the shape of the wind power generation blade in the state that the spacing filaments of the variable-spacing fabric inner layer are straightened, and high-performance fibers which are high in strength and easy to bend are adopted as the spacing filaments in the preparation process of the variable-spacing fabric inner layer, so that the upper and lower layers of fabrics of the prepared wind power generation blade can be in a joint state in a natural state; the outer layer of the flexible film is formed by coating resin with sealing property and adhesion property on the outer surface of the variable-gauge spacing fabric, and an inflation inlet is reserved during coating.
Optionally, the length of the spacer yarn at the edges of the upper and lower layers of the variable-gauge spacer fabric is approximately zero, so that the upper and lower layers of the variable-gauge spacer fabric can be connected into a whole at the edges.
Optionally, the resin with both sealing property and adhesion property is a flexible resin which is not hardened after being cured, and the flexible resin also has weather resistance and corrosion resistance.
Optionally, the flexible resin comprises a flexible epoxy resin and a SJKR 1592 one-component exposed polyurethane thick paint; the flexible film outer layer is prepared by adopting one or more of the flexible resins.
Optionally, the inner layer of the variable-gauge spacing fabric is made of one or more high-performance fiber materials, and the high-performance fibers include fibers such as high-strength polyester and ultrahigh molecular weight polyethylene.
The invention also provides a preparation method of the flexible inflatable wind power generation blade, which is used for preparing the flexible inflatable wind power generation blade and comprises the following steps:
preparing a variable-gauge spacing fabric according to the shape of the wind power generation blade, wherein the length of a spacing filament at the edges of an upper fabric layer and a lower fabric layer of the variable-gauge spacing fabric is approximately zero, so that the upper fabric layer and the lower fabric layer can be connected into a whole at the edges;
coating resin with sealing property and bonding property on the variable-pitch spacing fabric in the shape of the wind power generation blade, and reserving an inflation inlet during coating;
after the resin is cured, a proper amount of gas is injected from the inflation inlet, and the amount of the gas is determined according to the requirements of the rigidity and the mechanical strength of the wind power generation blade.
Optionally, the inner layer of the variable-gauge spacing fabric adopts high-performance fibers which are high in strength and easy to bend as spacing filaments during preparation, so that the upper and lower layers of fabric of the prepared wind power generation blade can be in a joint state in a natural state.
Optionally, the resin with both sealing property and adhesion property is a flexible resin which is not hardened after being cured, and the flexible resin also has weather resistance and corrosion resistance.
Optionally, the flexible resin comprises a flexible epoxy resin and a SJKR 1592 one-component exposed polyurethane thick paint; the flexible film outer layer is prepared by adopting one or more of the flexible resins.
Optionally, the inner layer of the variable-gauge spacing fabric is made of one or more high-performance fiber materials, and the high-performance fibers include fibers such as high-strength polyester and ultrahigh molecular weight polyethylene.
The invention has the beneficial effects that:
the flexible inflatable wind power generation blade is composed of a flexible film outer layer and a variable-spacing fabric inner layer, the shape of the variable-spacing fabric inner layer in a filament straightening state is the shape of the wind power generation blade, and high-performance fibers which are high in strength and easy to bend are adopted as the spacing filaments in the preparation process of the variable-spacing fabric inner layer, so that the upper and lower fabrics of the prepared wind power generation blade can be in a joint state in a natural state; the outer layer of the flexible membrane is formed by coating cured non-hardened flexible resin with sealing property and adhesion on the outer surface of the variable-gauge spacing fabric, and an inflation inlet is reserved during coating.
The application provides a flexible inflatable wind power generation blade, because the lower floor fabric can be in the laminating state about wind power generation blade when natural state, and the outer flexible resin that does not harden after the solidification for having leakproofness and cohesiveness concurrently of flexible membrane, when needs are installed, adopt inflation equipment again to aerify from the inflation inlet of reserving, and when the transportation, also the volume under the natural state is less promptly, therefore it is comparatively convenient during the transportation, can transport after rolling up even, the cost of transportation has significantly reduced. The existing wind power generation blade prepared by adopting the spacing yarn fabric and the filling sandwich material occupies a larger volume space than the flexible inflatable wind power generation blade provided by the application due to the fact that the existing wind power generation blade is formed during transportation.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a perspective view of an inner layer of a variable-pitch spacer fabric for a flexible inflatable wind power blade according to an embodiment of the present invention.
FIG. 2 is a transverse cross-sectional view of a variable-pitch spacer fabric corresponding to the tail of the flexible inflatable wind turbine blade according to one embodiment of the present invention; wherein, 1-2-1 is the upper layer fabric of the variable-gauge spacing fabric, 1-2-2 is the lower layer fabric of the variable-gauge spacing fabric, and 1-2-3 is the spacing filament between the upper layer fabric and the lower layer fabric of the variable-gauge spacing fabric.
FIG. 3 is a cross-sectional view of a variable-pitch spacer fabric corresponding to a port portion of a flexible inflatable wind turbine blade according to an embodiment of the present invention.
FIG. 4 is a perspective view of a flexible inflatable wind power blade according to an embodiment of the present invention.
FIG. 5 is a transverse cross-sectional view of the tail of the flexible inflatable wind power blade according to one embodiment of the present invention, wherein 1-4-1 is the outer layer of the flexible film.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
The first embodiment is as follows:
the embodiment provides a flexible inflatable wind power generation blade, flexible inflatable wind power generation blade includes: the flexible film outer layer and the variable-spacing fabric inner layer are in the shape of the wind power generation blade in the state that the spacing filaments of the variable-spacing fabric inner layer are straightened, and high-performance fibers which are high in strength and easy to bend are adopted as the spacing filaments in the preparation process of the variable-spacing fabric inner layer, so that the upper and lower layers of fabrics of the prepared wind power generation blade can be in a joint state in a natural state; the outer layer of the flexible film is formed by coating resin with sealing property and adhesion property on the outer surface of the variable-gauge spacing fabric, and an inflation inlet is reserved during coating.
As shown in fig. 1 to 4, the flexible inflatable wind power generation blade comprises an inner layer and an outer layer, wherein the inner layer is a variable-pitch spacing fabric 1-1, and the outer layer is a flexible film 1-2; the external shape of the variable-pitch spacer fabric 1-1 is the shape of a wind power generation blade, and the flexible film 1-2 is a flexible film outer layer formed by coating resin with sealing property and adhesive property on the outer surface of the variable-pitch spacer fabric.
The inner layer of the flexible inflatable wind power generation blade, namely the variable-spacing-distance fabric 1-1, can be directly prepared according to the shape and size requirements of the wind power generation blade.
As is well known, a spacer fabric is composed of an upper surface layer and a lower surface layer knitted by yarns or monofilaments, and spacer filaments or spacer yarns for connecting and supporting the upper surface layer and the lower surface layer, and a variable-pitch spacer fabric is a spacer fabric in which the lengths of the spacer filaments or the spacer yarns for connecting and supporting the upper surface layer and the lower surface layer are different.
The inner layer of the flexible inflatable wind power generation blade is prepared by adopting the variable-pitch spacing fabric, the length of the spacing filament or the spacing yarn between the upper surface layer and the lower surface layer is determined according to the thickness of each part of the wind power generation blade, the requirement of subsequent inflation sealing is considered, the length of the spacing filament at the edges of the upper fabric layer and the lower fabric layer (namely) of the variable-pitch spacing fabric 1-1 is limited to be approximately zero, the upper fabric layer and the lower fabric layer can be connected into a whole at the edges, so that the resin can be tightly bonded with the fabrics when the resin with sealing property and bonding property is coated on the surface of the subsequent flexible inflatable wind power generation blade, and the sealing effect is; finally, the variable-pitch space fabric 1-1 meeting the shape and size requirements of the wind power generation blade is prepared. The specific preparation process can be completed by adopting a weaving or artificial knitting method, and the preparation can be carried out by a person in the technical field of knitting according to the actual requirement.
In the preparation process, the prepared wind power generation blade is used for preparing the wind power generation blade, and the upper layer fabric and the lower layer fabric of the prepared wind power generation blade are required to be in a joint state in a natural state, so that high-performance fibers which are high in strength and easy to bend are used as spacing filaments of the variable-spacing fabric, for example, fibers such as high-strength polyester and ultrahigh molecular weight polyethylene can be used as the spacing filaments, and the inner layer of the variable-spacing fabric prepared in the way has the excellent characteristics of high tensile strength, wear resistance, corrosion resistance, impact resistance, weather resistance and the like. The high-strength polyester and the ultrahigh molecular weight polyethylene fibers have the characteristics of high strength and flexibility, are not like glass fibers and carbon fibers, and are easy to break, so that the high-strength polyester and ultrahigh molecular weight polyethylene fibers can be used for weaving the spacing yarns, have high strength and are convenient to bend and fold.
The outer layer of the flexible inflatable wind power generation blade, namely the flexible film 1-2, needs to be prepared by flexible resin which is not hardened after being cured, the flexible resin is considered to be used for preparing the wind power generation blade, the flexible resin also has weather resistance and corrosion resistance, and specifically, flexible epoxy resin, SJKR 1592 single-component exposed polyurethane thick coating and the like can be adopted.
The flexible epoxy resin and the SJKR 1592 single-component exposed polyurethane thick coating are coated outside the variable-pitch space fabric 1-1 to form a flexible film 1-2, 4-5 layers can be coated according to requirements during coating, so that the flexible film has good sealing performance, and the two resins have good viscosity, so that the flexible film can be well adhered to the upper and lower layers of fabrics when being coated on the surface layer of the variable-pitch space fabric 1-1 and can not be separated for a long time, and the good sealing performance of the flexible inflatable wind power generation blade is maintained. After the flexible epoxy resin is coated and completely cured, the performances of weather resistance, fatigue resistance, corrosion resistance, sand erosion resistance, radiation resistance and the like of the wind power generation blade can be improved. The viscosity of the flexible epoxy resin adopted by the application is 20000cp (60 ℃), and the flexible epoxy resin can be fully bonded with the inner layer of the flexible inflatable wind power generation blade, namely the variable-spacing spacer fabric 1-1, so that the flexible inflatable wind power generation blade is prevented from falling off for a long time, and the sealing property of the flexible inflatable wind power generation blade is ensured; and the tensile strength of the SJKR 1592 single-component exposed polyurethane thick coating is more than 12MPa, and experiments prove that a compact protective layer is formed by coating the SJKR 1592 single-component exposed polyurethane thick coating for 5 times, and the polyurethane elastomer formed after curing and film forming can be exposed outdoors for more than 20 years. In practical application, the flexible epoxy resin and the SJKR 1592 single-component exposed polyurethane thick coating can be mixed and coated on the outer layer of the variable-pitch spacer fabric 1-1.
The flexible epoxy resin and the SJKR 1592 single-component exposed polyurethane thick paint have the characteristic of not hardening after curing, the prepared flexible inflatable wind power generation blade can be transported after being wound and rolled like paper during transportation, even if the coil is not wound, the space occupied by the coil is extremely small because the upper surface and the lower surface are in a joint state in a natural state, the transportation is greatly facilitated, after the wind power generation blades are transported to the installation site of the wind power generation equipment, the air inflation equipment is adopted to inflate from the inflation inlet according to the rigidity and the mechanical strength of the wind power generation blades, after inflation, the outer layer flexible film 1-2 plays a good role in sealing, the inner layer variable-spacing fabric 1-1, due to the existence of the spacing wires or the spacing yarns, the shape of the wind power generation blade can be kept, the wind power generation blade has certain shape and rigidity, and the wind power generation blade can completely replace the existing wind power generation blade made of hard materials.
In order to prove that the flexible inflatable wind power generation blade prepared by the method can completely meet various indexes of the wind power generation blade, the following data are listed:
1. standard of existing wind power generation blades
(see https:// wenku. baidu. com/view/1ae53baa4b 7302768e9951e7989680203d86be 8. html:
a) the traditional wind power generation blade with the length of 50m can reach 10 tons; compared with the traditional wind power generation blade, the wind power generation blade prepared by the fabric and the filling resin has the advantages that the mass is reduced by 30-40%, and the mass of the wind power generation blade with the length of 50m is about 6-7 tons;
b) the service life of the blade is more than or equal to 20 years;
c) the tensile strength of the blade is more than or equal to 200N/mm2(200N/mm2The tensile strength standard of the existing glass fiber reinforced plastic laminate wind power generation blade);
d) the tensile modulus of the blade is more than or equal to 16000N/mm2。(16000N/mm2The tensile modulus standard of the existing glass fiber reinforced plastic laminate wind power generation blade).
2. The flexible inflatable wind power generation blade prepared by the application can reach relevant indexes that:
(1) the volume of the flexible inflatable wind power generation blade is the same as that of the wind power generation blade prepared from the fabric and the filling resin, and the weight of the flexible inflatable wind power generation blade which is 50 meters long is 1-1.5 tons, so that the weight of the flexible inflatable wind power generation blade is reduced by 85-90% compared with that of the traditional wind power generation blade;
(2) service life: 20 years;
(3) average tensile strength: average tensile strength of 220N/mm2；
(4) Average tensile modulus: 17000N/mm2。
Therefore, the flexible inflatable wind power generation blade provided by the application can meet the strength and modulus requirements of the conventional wind power generation blade. Therefore, the wind power generation blade prepared by the method meets the strength requirement of the conventional wind power generation blade, and meanwhile, the invention has the advantages of energy saving, high efficiency, convenient operation, strong applicability and contribution to transportation, loading and unloading of the wind power generation blade; most importantly, the upper and lower fabric of the wind power generation blade of this application preparation can be in the laminating state when natural state, in the transportation, also the volume under the natural state is less, therefore it is comparatively convenient in the transportation, can transport around rolling up even, for the wind power generation blade (when transporting, owing to shaping, shared volume space is far more than the flexible inflatable wind power generation blade that this application provided) that current adoption interval yarn fabric and filling sandwich material prepared greatly reduced the cost of transportation, and when needs were installed, adopt inflation equipment to aerify from the inflation inlet of reserving again, the wind power generation blade after aerifing can satisfy relevant index requirement.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. A flexible inflatable wind power generation blade, characterized in that the flexible inflatable wind power generation blade comprises: the flexible film outer layer and the variable-spacing fabric inner layer are in the shape of the wind power generation blade in the state that the spacing filaments of the variable-spacing fabric inner layer are straightened, and high-performance fibers which are high in strength and easy to bend are adopted as the spacing filaments in the preparation process of the variable-spacing fabric inner layer, so that the upper and lower layers of fabrics of the prepared wind power generation blade can be in a joint state in a natural state; the outer layer of the flexible film is formed by coating resin with sealing property and adhesion property on the outer surface of the variable-gauge spacing fabric, and an inflation inlet is reserved during coating.
2. The flexible, inflatable wind power blade of claim 1, wherein the length of the spacer thread at the edges of the upper and lower layers of fabric of the variable gauge spacer fabric is approximately zero, such that the upper and lower layers of fabric can be integrally connected at the edges.
3. The flexible, inflatable wind power blade of claim 2, wherein said resin having both sealing and adhesive properties is a flexible resin that does not harden after curing, said flexible resin further having weather and corrosion resistance.
4. The flexible, inflatable wind power blade according to claim 3, wherein said flexible resin comprises flexible epoxy and SJKR 1592 one-component exposed polyurethane thick paint; the flexible film outer layer is prepared by adopting one or more of the flexible resins.
5. The flexible inflatable wind power blade according to claim 4, wherein the inner layer of variable-pitch spacer fabric is made of one or more high-performance fiber materials, and the high-performance fibers comprise fibers of high-strength polyester, ultra-high molecular weight polyethylene and the like.
6. A method of manufacturing a flexible inflatable wind power blade, for use in manufacturing a flexible inflatable wind power blade according to any of claims 1-5, the method comprising:
preparing a variable-gauge spacing fabric according to the shape of the wind power generation blade, wherein the length of a spacing filament at the edges of an upper fabric layer and a lower fabric layer of the variable-gauge spacing fabric is approximately zero, so that the upper fabric layer and the lower fabric layer can be connected into a whole at the edges;
coating resin with sealing property and bonding property on the variable-pitch spacing fabric in the shape of the wind power generation blade, and reserving an inflation inlet during coating;
after the resin is cured, a proper amount of gas is injected from the inflation inlet, and the amount of the gas is determined according to the requirements of the rigidity and the mechanical strength of the wind power generation blade.
7. The method for preparing the flexible inflatable wind power generation blade according to claim 6, wherein the inner layer of the variable-pitch spacing fabric adopts high-performance fibers which are high in strength and easy to bend as spacing filaments during preparation, so that the upper and lower layers of fabrics can be in a joint state when the prepared wind power generation blade is in a natural state.
8. The method of claim 7, wherein the resin with sealing and bonding properties is a flexible resin that is not cured after curing, and the flexible resin has weather resistance and corrosion resistance.
9. The method of making a flexible, inflatable wind power blade according to claim 8, wherein said flexible resin comprises flexible epoxy and SJKR 1592 single component exposed polyurethane thick paint; the flexible film outer layer is prepared by adopting one or more of the flexible resins.
10. The method for manufacturing the flexible inflatable wind power generation blade according to claim 9, wherein the inner layer of the variable-pitch spacer fabric is made of one or more high-performance fiber materials, and the high-performance fibers comprise fibers such as high-strength polyester and ultrahigh molecular weight polyethylene.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010599498.3A CN111692041B (en) | 2020-06-28 | 2020-06-28 | Flexible inflatable wind power generation blade and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010599498.3A CN111692041B (en) | 2020-06-28 | 2020-06-28 | Flexible inflatable wind power generation blade and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111692041A true CN111692041A (en) | 2020-09-22 |
| CN111692041B CN111692041B (en) | 2022-02-15 |
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Cited By (1)
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| US20230184209A1 (en) * | 2021-12-15 | 2023-06-15 | Alliance For Sustainable Energy, Llc | Inflatable wind turbine blade and attachment mechanism |
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| US11988191B2 (en) * | 2021-12-15 | 2024-05-21 | Alliance For Sustainable Energy, Llc | Inflatable wind turbine blade and attachment mechanism |
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| CN111692041B (en) | 2022-02-15 |
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