CN114286891A - Main beam for fan blade and manufacturing method thereof - Google Patents

Main beam for fan blade and manufacturing method thereof Download PDF

Info

Publication number
CN114286891A
CN114286891A CN202080003490.4A CN202080003490A CN114286891A CN 114286891 A CN114286891 A CN 114286891A CN 202080003490 A CN202080003490 A CN 202080003490A CN 114286891 A CN114286891 A CN 114286891A
Authority
CN
China
Prior art keywords
carbon fiber
glass fiber
blade
pultruded
pultrusion
Prior art date
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.)
Granted
Application number
CN202080003490.4A
Other languages
Chinese (zh)
Other versions
CN114286891B (en
Inventor
梁嫄
马豪
拉尔斯.欧佛高
孙建旭
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Envision Energy Co Ltd
Original Assignee
Envision Energy Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Envision Energy Co Ltd filed Critical Envision Energy Co Ltd
Publication of CN114286891A publication Critical patent/CN114286891A/en
Application granted granted Critical
Publication of CN114286891B publication Critical patent/CN114286891B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/06—Fibrous reinforcements only
    • B29C70/10—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres
    • B29C70/16—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of substantial or continuous length
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28—Shaping operations therefor
    • B29C70/40—Shaping or impregnating by compression not applied
    • B29C70/50—Shaping or impregnating by compression not applied for producing articles of indefinite length, e.g. prepregs, sheet moulding compounds [SMC] or cross moulding compounds [XMC]
    • B29C70/52—Pultrusion, i.e. forming and compressing by continuously pulling through a die
    • 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
    • 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
    • F05B2280/20—Inorganic materials, e.g. non-metallic materials
    • F05B2280/2006—Carbon, e.g. graphite
    • 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
    • F05B2280/6003—Composites; e.g. fibre-reinforced
    • 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

Abstract

A spar (100) for a fan blade (1) and a method of manufacturing the same, comprising: one or more carbon fiber pultruded panels (101) arranged along the length of the blade (1); one or more glass fiber pultruded panels (102) arranged along the length direction of the blade (1), wherein the carbon fiber pultruded panels (101) and the glass fiber pultruded panels (102) are mixedly arranged such that the mixed carbon fiber pultruded panels (101) and glass fiber pultruded panels (102) have a positive intermixing effect and/or a kink coupling effect; and; a first potting material impregnating the carbon fiber pultruded sheet (101) and the glass fiber pultruded sheet (102).

Description

Main beam for fan blade and manufacturing method thereof Technical Field
The invention relates to the field of wind driven generators, in particular to a main beam for a fan blade. Furthermore, the invention relates to a method of manufacturing such a girder.
Background
In recent years, with the increasing environmental importance of various countries, the field of clean energy has rapidly developed in the world. The clean energy is a novel energy, and has the advantages of wide distribution, reproducibility, small environmental pollution and the like compared with the traditional fossil fuel. Wind generators are increasingly used as the most potential representative of clean energy sources, and are expected to further replace traditional fossil energy sources. Wind power is a typical clean energy, and is more and more emphasized by all parties due to the environmental protection problem in recent years. The core and soul of wind power are blade design, and the key of blade design depends on the design of a main bearing structure, namely a main beam.
The blades of the wind driven generator are important components for capturing wind energy, wherein the blades mounted on the hub of the wind driven generator are driven by the wind energy to rotate so as to generate lift force, and the lift force is further converted into torque through a transmission chain in the engine room to drive the generator to generate electricity. In the same case, the larger the impeller formed by the blades, the more wind energy that can be captured, and therefore the blades of the wind turbine tend to be longer and longer. As blades become longer and longer, clearance (clearance is the distance from the tip of the fan blade to the tower, which is an important safety metric) becomes more and more a bottleneck, and the development of new blade materials or blade designs to increase clearance is urgent. The blade spar acts as a component contributing about 90% of the flap stiffness, thereby substantially determining the amount of headroom.
Carbon fiber is a high modulus, high strength material, but at the same time is expensive. Therefore, how to reasonably introduce carbon fibers into the blade to achieve the purpose of increasing the clearance and increasing the cost of the blade as little as possible is a current important research topic of each large wind power company. Because the cost of the pure carbon fiber girder is too high, the one-time investment cost-back time is too long, and therefore the mixed fiber material is produced at the right moment. The hybrid fiber material is a composite material formed by mixing and weaving or laying a certain amount of carbon fibers and glass fibers. Hybrid fiber materials may balance performance and cost as much as possible.
However, current hybrid fiber materials have mainly the following limitations:
1. the mixing mode of the mixed fiber material is mostly carried out in the material scale, for example, the carbon fiber and the glass fiber are mixed and woven in the same fabric layer according to different proportions of fiber bundles, or one layer of the carbon fiber and one layer of the glass fiber are mixed and laid, the mixed form extremely lacks the design freedom degree, the mixed proportion of the fiber is completely restricted by a material supplier, and for blades of different models, only a fixed mixed proportion material can be selected, so that the requirement of customizing according to each model cannot be met.
2. The final mechanical properties of carbon fibers are greatly affected by the process, so a stable process route is crucial to the performance stability of the final product. The hybrid fiber material (i.e. the hybrid material of carbon fiber and glass fiber) generally adopts a perfusion process, i.e. carbon-glass hybrid fabric is perfused by overlapping multiple layers, or several layers of carbon fiber and several layers of glass fiber cloth are perfused by overlapping. However, the infusion process of such materials is prone to defects such as bubbles and wrinkles, which can compromise the final performance.
There is a need for a new fan main beam or main beam material that at least partially eliminates the above limitations.
Disclosure of Invention
The object of the invention is to provide a main girder for a fan blade and a method for producing the same, by means of which a more economical, better-performing and more maneuverable hybrid form can be provided with a reduced amount of carbon fibres, so that the required stiffness and the service life of the main girder are increased.
In a first aspect of the invention, this task is solved by a main beam for a fan blade, comprising: one or more carbon fiber pultruded panels arranged along the length direction of the blade; one or more glass fiber pultruded panels arranged along the length direction of the blade; the carbon fiber pultrusion plate and the glass fiber pultrusion plate are combined in one or more modes and mixed in one or more proportions, so that the mixed carbon fiber pultrusion plate and the glass fiber pultrusion plate have a positive mixing effect and/or a bending and twisting coupling effect; and the first perfusion material is used for infiltrating the carbon fiber pultrusion plate and the glass fiber pultrusion plate.
In the present invention, the term "main beam" refers to an elongated structure in the shells on both sides of the blade for reinforcing the blade. Typically, the two side girders are connected to webs located inside the blade to support the blade interior space. The carbon fiber pultrusion plate is a material formed by curing carbon fibers through resin impregnation and pultrusion processes, and the glass fiber pultrusion plate is a material formed by curing glass fibers through resin impregnation and pultrusion processes. Preferably, the carbon fibre pultruded sheet and the glass fibre pultruded sheet in the main beam together form a continuous main beam surface having a desired curvature if necessary. The term "infiltrated" refers to the pouring material being poured into and at least partially bonded to the pouring object and finally cured. In addition, the second potting material for forming the carbon fiber pultrusion plate can be the same as the first potting material and can also be other potting materials, and similarly, the third potting material for forming the glass fiber pultrusion plate can be the same as the first potting material and can also be other potting materials; the carbon fiber pultruded panel and the glass fiber pultruded panel may be arranged adjacent to each other in a direction perpendicular to the thickness of the main beam, such as in the length and width directions of the main beam to form a footprint of the main beam. Under the condition that the carbon fiber pultrusion plate and the glass fiber pultrusion plate are of strip structures, the carbon fiber pultrusion plate and the glass fiber pultrusion plate can be arranged in the chord direction of the main beam in an adjacent mode. Here, the term "chord-wise" refers to a direction perpendicular to the thickness of the main beam and perpendicular to the length direction of the blade.
In a further development of the invention, it is provided that the glass fiber pultruded sheet body has a rectangular cross section. According to different application occasions, glass fiber pultruded panels of different sizes can be adopted. For example, the size of the fiberglass pultrusion plate may be determined according to the desired final shape of the main beam.
In one embodiment of the invention, the cross section of the carbon fiber pultruded sheet body is rectangular. According to different application occasions, carbon fiber pultrusion plates with different sizes can be adopted. For example, the size of the carbon fiber pultruded panel may be determined according to the desired final shape of the main beam.
In one embodiment of the invention, m carbon fiber pultruded panels are stacked in the thickness direction of the blade and/or n carbon fiber pultruded panels are stacked in the chord direction of the blade in a certain region of the main beam, wherein m and n are integers from 1 to 100. The carbon fiber pultrusion plate extends for 0.1% -99.9% of the length of the blade. The starting point of the length of the blade is the joint of the root of the blade and the hub, and the end point of the length of the blade is the tip of the blade.
In another embodiment of the invention, in a certain area of the main beam, p glass fiber pultruded panels are stacked along the thickness direction of the blade, and/or q glass fiber pultruded panels are stacked along the chord direction of the blade, wherein p and q are integers from 1 to 100.
For example, one or more glass fiber pultruded panels and/or one or more carbon fiber pultruded panels may be disposed above, below, to the left, to the right, and to the front and back of each carbon fiber pultruded panel. Similarly, one or more glass fiber pultrusion plates and/or one or more carbon fiber pultrusion plates can be arranged above, below, on the left, right, in front and at the back of each glass fiber pultrusion plate. Through adjusting the different mixed scheme, the mixed size and the mixed proportion of carbon fiber pultrusion plate and glass fiber pultrusion plate, the rigidity of the girder can be adjusted, so that the glass fiber pultrusion plate and the carbon fiber pultrusion plate can realize the expected waving rigidity after the secondary pouring together, and the expected curved surface can be formed better.
In another preferred embodiment of the present invention, the carbon fiber pultruded panel is formed by curing the second potting material, and the glass fiber pultruded panel is formed by curing the third potting material. Wherein the first potting material, the second potting material and the third potting material may be the same or different between each two or the three may be the same or different, and the three may include one or more of the following: the thermosetting epoxy resin, vinyl resin, unsaturated polyester resin, phenol resin, bismaleimide and thermoplastic resin are contained. Other casting materials are also contemplated under the teachings of the present invention.
In yet another preferred embodiment of the present invention, it is provided that the thermoplastic resin comprises one or more of the following: polypropylene resins, polyethylene resins, polyvinyl chloride resins, polystyrene resins, polyacrylonitrile-butadiene-styrene resins, polyurethanes, polyimide resins, polyether ether ketone resins, and polyphenylene sulfide resins. Other thermoplastic resins are also contemplated under the teachings of the present invention.
In a further embodiment of the invention, it is provided that the first end of the carbon fiber pultruded sheet is connected to the second end of the glass fiber pultruded sheet at one or more layers in the thickness direction of the blade, and/or the first end of the carbon fiber pultruded sheet is inserted between two glass fiber pultruded sheets, and/or the second end of the glass fiber pultruded sheet is inserted between two carbon fiber pultruded sheets. The first end part and the second end part can be end parts positioned in the length direction of the glass fiber pultrusion plate and the carbon fiber pultrusion plate, and also can be end parts positioned in the width direction of the glass fiber pultrusion plate and the carbon fiber pultrusion plate.
Through the preferred scheme, better passive load reduction of the main beam can be realized, for example, a certain layer in the thickness direction of the blade is specifically and mixedly arranged along the chord direction, a first carbon fiber pultrusion plate and a first glass fiber pultrusion plate which are locally connected are distributed on the first chord direction coordinate position, a second carbon fiber pultrusion plate and a second glass fiber pultrusion plate which are locally connected are distributed on the second chord direction coordinate position, and the like, and a N carbon fiber pultrusion plate and a N glass fiber pultrusion plate which are locally connected are distributed on the N chord direction coordinate position, so that the connecting part on the first chord direction coordinate position, the connecting part on the second chord direction coordinate position and the connecting part on the N chord direction coordinate position can be distributed in a staggered manner, the blade can have a bending and twisting coupling effect, namely, torsional deformation is generated under the bending condition, and the passive load reduction is realized by utilizing the response of the structure.
In a further preferred embodiment of the invention, one or more connecting sections are provided at the connecting points of the glass fiber pultruded sheet and the carbon fiber pultruded sheet, which connecting sections cover the first end of the carbon fiber pultruded sheet and/or the second end of the glass fiber pultruded sheet.
Through this preferred scheme, can realize the better local intensity of girder, and provide gentle geometric transition, its reason lies in, at first, from the junction, the carbon fiber pultrusion board all has the chamfer to pass through to full thickness from 0 with fine pultrusion board both sides, respectively lay multilayer fibre cloth from top to bottom at the blank area at junction, the staggered floor size of fibre cloth matches with the slope angle of both sides pultrusion board, the carbon fiber pultrusion board of local connection utilizes the cloth layer at junction with fine pultrusion board to be connected, both satisfy intensity and satisfy the requirement of geometric transition gently again, when the chamfer side of two pultrusion boards was towards one side, fibre cloth was from the junction that is closest to two pultrusion boards to when passing through to full thickness completely, the size of fibre cloth is by little big gradual change. When the chamfers of the two pultrusion plates face to two sides, the two pultrusion plates are butted to just form slope angle matching, a plurality of layers of fiber cloth are arranged between the two plates, the gap between the two pultrusion plates is not in place, the fitting degree is better, the friction coefficient is increased, the two pultrusion plates do not move in a dislocation way, and the local rigidity is enhanced; in addition, the upper surface of the upper plate and the lower surface of the lower plate are respectively provided with a layer of fiber cloth and a layer of fiber cloth, and the fiber cloth form a local connection design integrally, so that the upper and lower surfaces of the two pultruded plates are smoother. The main beam is composed of two types of pultrusion plate main bodies and connecting parts of the two types of pultrusion plate main bodies in the thickness direction, so that more mobility is provided in the direction vertical to the thickness direction of the main beam, such as the chord direction; these activities facilitate the formation of the desired surface shape, such as a curved surface, of the main beam material prior to pouring, and thus can be cured after pouring to maintain the surface shape.
In a further preferred embodiment of the invention, the connecting portion comprises one or more of a woven glass fiber fabric, a woven carbon fiber fabric, a non-woven glass fiber fabric, a non-woven carbon fiber fabric, and a roving glass fiber fabric, and other connecting portion materials are also conceivable under the teaching of the present invention. j connecting parts are stacked along the thickness direction of the blade, and/or k connecting parts are stacked along the chord direction of the blade, wherein j and k are integers from 1 to 100.
In a second aspect of the invention, the aforementioned task is solved by a method of manufacturing a spar for a fan blade, comprising the steps of: providing one or more carbon fiber pultrusion plates, and arranging the carbon fiber pultrusion plates along the length direction of the blade; providing one or more glass fiber pultrusion plates, and arranging the glass fiber pultrusion plates along the length direction of the blade; the carbon fiber pultrusion plate and the glass fiber pultrusion plate are combined in one or more modes and combined and mixed in one or more proportions, so that the mixed carbon fiber pultrusion plate and the glass fiber pultrusion plate have positive mixing effect and/or bending and twisting coupling effect; and infiltrating the carbon fiber pultrusion plate and the glass fiber pultrusion plate with a first filling material.
In a preferred embodiment of the invention, it is provided that the provision of one or more pultruded panels of carbon fibres and the provision of one or more pultruded panels of glass fibres comprises the following steps: the carbon fiber pultrusion plate is soaked and cured by a second perfusion material, and the glass fiber pultrusion plate is soaked and cured by a third perfusion material; arranging one or more carbon fiber pultruded panels and/or glass fiber pultruded panels on top of each other, and providing a perfusion layer around each of the carbon fiber pultruded panels for a second perfusion; and arranging a perfusion layer around each glass fiber pultrusion plate for second perfusion.
The invention has at least the following beneficial effects: (1) the invention adopts the mixture of carbon fiber pultrusion and glass fiber pultrusion, solves the defect of insufficient rigidity of the pure glass fiber main beam, and also avoids the defect of overhigh price of the pure carbon fiber; the mixing ratio of the carbon fiber and the glass fiber can be adjusted at will to achieve the overall optimal cost performance; (2) carbon fiber and glass fiber composites exist in their respective best process: pultrusion; the hybrid material has a positive hybrid effect, namely, the rigidity of the hybrid material is improved due to the existence of the opposite side, and the hybrid material is superior to a pure theoretical value of a mixing relation; compared with a pure carbon fiber pultrusion blade, the glass fiber pultrusion blade has the mixing and buffering functions of glass fibers, can reduce the process sensitivity of carbon fibers, and improves the process and quality robustness of the carbon fibers; (3) the special local connection design can enable the carbon fiber pultrusion plate to start from the blade leaf, and the local connection design has two functions, one is to ensure that the local strength of the connection meets the requirement, and in addition, a gentle geometric transition is provided, so that the defects of resin enrichment and the like caused by suspension of the pultrusion plate are avoided; the carbon fiber pultrusion plate and the glass fiber pultrusion plate can be mixed on the same layer according to the design, also can be mixed on different layers, have the local connection design and can be randomly combined and arranged to the maximum extent; the local connection design is realized by a composite material cloth layer, and a soft laying layer is used for connecting two hard structures, so that the local connection design is very flexible and proper.
The present invention also provides a method of manufacturing a wind turbine blade comprising the steps of: prefabricating a main beam by the method, placing the main beam in the shell, and performing third pouring with the shell; or providing one or more carbon fiber pultrusion plates, and arranging the carbon fiber pultrusion plates in the shell along the length direction of the blade; providing one or more glass fiber pultrusion plates, and arranging the glass fiber pultrusion plates in the shell along the length direction of the blade; and (5) performing secondary filling to integrally form the carbon fiber pultrusion plate, the glass fiber pultrusion plate and other materials. The hybrid main beam can be used as a prefabricated main beam to be molded before the shell is molded and then placed between the shell and the shell for secondary injection; or initially both types of pultruded panels are placed in the shell in one piece with the rest of the shell.
In the main beam for the fan blade and the manufacturing method thereof provided by the invention, the carbon fiber is a material with high specific strength and high specific modulus, is expensive and limits the wide application of the carbon fiber. Thus, the present invention achieves the most efficient use of carbon fiber materials. Mixing carbon fiber and glass fiber is a more optimized design mode. Compared with the material level mixing of carbon glass hybrid weaving or carbon glass hybrid layering, the invention can bring larger design space from higher dimension mixing and is not limited by the material customization mixing ratio. In addition, various properties of the carbon fiber are very sensitive to the process stability, the pultrusion process is a process which is generally recognized to exert the properties of the carbon fiber material to the greatest extent and stably, and the properties of the glass fiber material can be stably solidified by pultrusion of the glass fiber. In conclusion, the main beam made of the carbon fiber pultrusion material and the glass fiber pultrusion material is mixed, so that the maximum potential of blade design can be exerted, and a product with the optimal cost performance is created.
Drawings
Fig. 1A-1G illustrate various embodiments of a main beam according to the present invention;
FIGS. 2A-2C show a schematic view of the connection of various components in the main beam; and
3A-3B show schematic views of a wind turbine employing a main beam according to the present invention; and
FIG. 4 illustrates a method flow of manufacturing a spar for a wind turbine blade according to the present disclosure.
Shown in the figure: 100-main beam; 101-carbon fiber pultrusion plate; 102-glass fiber pultrusion plate; 103-a connecting portion; 104-attachment site.
Detailed Description
It should be noted that the components in the figures may be exaggerated and not necessarily to scale for illustrative purposes. In the figures, identical or functionally identical components are provided with the same reference symbols.
In the present invention, "disposed on …", "disposed over …" and "disposed over …" do not exclude the presence of an intermediate therebetween, unless otherwise specified. Further, "disposed on or above …" merely indicates the relative positional relationship between two components, and may also be converted to "disposed below or below …" and vice versa in certain cases, such as after reversing the product direction.
In the present invention, the embodiments are only intended to illustrate the aspects of the present invention, and should not be construed as limiting.
In the present invention, the terms "a" and "an" do not exclude the presence of a plurality of elements, unless otherwise specified.
It is further noted herein that in embodiments of the present invention, only a portion of the components or assemblies may be shown for clarity and simplicity, but those of ordinary skill in the art will appreciate that, given the teachings of the present invention, required components or assemblies may be added as needed in a particular scenario.
It is also noted herein that, within the scope of the present invention, the terms "same", "equal", and the like do not mean that the two values are absolutely equal, but allow some reasonable error, that is, the terms also encompass "substantially the same", "substantially equal". By analogy, in the present invention, the terms "perpendicular", "parallel" and the like in the directions of the tables also cover the meanings of "substantially perpendicular", "substantially parallel".
The numbering of the steps of the methods of the present invention does not limit the order of execution of the steps of the methods. Unless specifically stated, the method steps may be performed in a different order.
Most conventional main beams are made of glass fiber reinforced plastic composite (GFRP) and are molded by injection in a separate main beam mold to form a preform, which is then placed in a shell mold to be assembled with other materials into an integral blade shell.
Most of the glass fiber main beams in the market are pure glass fiber main beams, and the glass fiber materials cannot meet the requirements of long blades on rigidity above 80m of the blades, so that the glass fiber blades are often extremely heavy, and the rigidity problem can be solved with high efficiency by adding the carbon fiber materials. However, the existing carbon fiber main beam is only pultruded by pure carbon fibers or poured by the pure carbon fibers, and the price is extremely high; even carbon glass mixes the girder, also be mostly carbon glass and mix the material level of weaving or mixing the laying and mix the form, and do not carry out carbon material and glass fiber material's row that mixes in higher structural design dimension. In addition, even though individual patents mention a hybrid design of carbon fiber and glass fiber pultrusion, they do not address the detailed design issues of the actual two material connection and are deficient in operability.
The object of the invention is to provide a main girder for a fan blade and a method for producing the same, by means of which a more economical, better-performing and more maneuverable hybrid form can be provided with a reduced amount of carbon fibres, so that the required stiffness and the service life of the main girder are increased.
In order to realize the idea, the invention provides a main beam for a fan blade and a manufacturing method thereof, which comprises one or more carbon fiber pultrusion plates, a carbon fiber pultrusion plate and a carbon fiber pultrusion plate, wherein the carbon fiber pultrusion plates are arranged along the length direction of the blade; one or more glass fiber pultruded panels arranged along a length direction of the blade, wherein the carbon fiber pultruded panels and the glass fiber pultruded panels are mixedly arranged such that the mixed carbon fiber pultruded panels and glass fiber pultruded panels have a positive intermixing effect and/or a kink coupling effect; and; the first filling material is used for infiltrating the carbon fiber pultrusion plate and the glass fiber pultrusion plate.
The main beam for a fan blade and the manufacturing method thereof according to the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments. Advantages and features of the present invention will become apparent from the following description and from the claims. It is to be noted that the drawings are in a very simplified form and are not to precise scale, which is merely for the purpose of facilitating and distinctly claiming the embodiments of the present invention.
Whether the carbon plates are arranged on the outermost side of the blade or the middle layer (the dimension in the thickness direction of the main beam) can be determined according to the design optimization result, and the first embodiment and the second embodiment are referred to. Fig. 1A shows a first embodiment according to the present invention.
In a first embodiment, the main beam comprises: one or more carbon fiber pultruded panels 101, said carbon fiber pultruded panels 101 being arranged along a length direction z of the blade; one or more glass fiber pultruded panels 102, said glass fiber pultruded panels 102 also arranged along said blade length direction z, said arrangement along said blade length direction z comprising: the length of the blade can be 0.1-99.9% formed by splicing a plurality of plates, and the length of the blade can also be 0.1-99.9% formed by a whole plate. The starting point of the length of the blade is the joint of the root of the blade and the hub, and the end point of the length of the blade is the tip of the blade. The carbon fiber pultrusion plate 101 and the glass fiber pultrusion plate 102 extend for 0.1% -99.9% of the length of the blade. Under the teaching of the present invention, the carbon fiber pultrusion plate 101 and the glass fiber pultrusion plate 102 are started from 0.1% to 99.9% of the blade length, and the carbon fiber pultrusion plate 101 and the glass fiber pultrusion plate 102 are stopped from 0.1% to 99.9% of the blade length.
In a certain area of the main beam, 3 carbon fiber pultrusion plates 101 are stacked along the thickness direction x of the blade, in a certain area of the main beam, 7 glass fiber pultrusion plates 102 are stacked along the thickness direction x of the blade, and as seen from the side view, the carbon fiber pultrusion plates 101 are arranged at the outermost side of the blade, and the glass fiber pultrusion plates 102 are arranged at the inner side of the blade; the carbon fiber pultrusion plate 101 and the glass fiber pultrusion plate 102 are combined in one or more ways and mixed in one or more proportions; a second potting material impregnating the carbon fiber pultruded sheet 101, and a third potting material impregnating the glass fiber pultruded sheet 102.
The cross section of the glass fiber pultrusion plate 102 main body is rectangular. Different sizes of fiberglass pultruded panels 102 may be used depending on the application. For example, the fiberglass pultruded panel 102 may be sized according to the desired final shape of the main beam. The cross section of the main body of the carbon fiber pultruded panel 101 is rectangular. Different sizes of the carbon fiber pultruded panels 101 may be used depending on the application. For example, the carbon fiber pultruded panel 101 may be sized according to the desired final shape of the main beam.
Fig. 1B shows a second embodiment according to the present invention.
In the second embodiment, one or more glass fiber pultruded sheets 102 are disposed above and below each carbon fiber pultruded sheet 101. The carbon fiber pultrusion plate is randomly embedded into the glass fiber pultrusion plate, and the rigidity of the girder can be adjusted by adjusting different mixing schemes, mixing sizes and mixing proportions of the carbon fiber pultrusion plate 101 and the glass fiber pultrusion plate 102, so that the glass fiber pultrusion plate 102 and the carbon fiber pultrusion plate 101 can realize the expected waving rigidity after secondary pouring, and can better form an expected curved surface.
In another preferred embodiment of the present invention, the carbon fiber pultruded panel 101 is formed by curing the second potting material, and the glass fiber pultruded panel 102 is formed by curing the third potting material. Wherein the first potting material, the second potting material, and the third potting material each include one or more of: the thermosetting epoxy resin, vinyl resin, unsaturated polyester resin, phenol resin, bismaleimide and thermoplastic resin are contained. Other casting materials are also contemplated under the teachings of the present invention.
In yet another preferred embodiment of the present invention, it is provided that the thermoplastic resin comprises one or more of the following: polypropylene resins, polyethylene resins, polyvinyl chloride resins, polystyrene resins, polyacrylonitrile-butadiene-styrene resins, polyurethanes, polyimide resins, polyether ether ketone resins, and polyphenylene sulfide resins. Other thermoplastic resins are also contemplated under the teachings of the present invention.
In a further embodiment of the invention, it is provided that the first end of the carbon fiber pultruded sheet 101 is connected to the second end of the glass fiber pultruded sheet 102 in one or more layers in the thickness direction x of the blade, and/or that the first end of the carbon fiber pultruded sheet 101 is inserted between two glass fiber pultruded sheets 102, and/or that the second end of the glass fiber pultruded sheet 102 is inserted between two carbon fiber pultruded sheets 101. The first end portion and the second end portion may be end portions located in the length direction z of the glass fiber pultruded plate 102 and the carbon fiber pultruded plate 101, or end portions located in the width direction of the glass fiber pultruded plate 102 and the carbon fiber pultruded plate 101.
Whether the carbon plate is arranged at the most tip portion of the blade (the dimension in the length direction of the blade) may be decided according to the design optimization result, see the third and fourth embodiments.
Fig. 1C shows a third embodiment according to the present invention.
In the third embodiment, the carbon fiber pultruded sheet 101 is inserted and attached on the same side of the glass fiber pultruded sheet 102. The carbon fiber pultrusion plates 101 are only arranged in the blade tip area, and the carbon fiber pultrusion plates 101 and the glass fiber pultrusion plates 102 are mixed in the layer.
Fig. 1D shows a fourth embodiment according to the present invention.
In the fourth embodiment, a short carbon fiber pultruded sheet 101 is inserted between two long glass fiber pultruded sheets 102. The carbon fiber pultrusion plate 101 is only arranged in the blade tip area, and the carbon fiber pultrusion plate 101 and the glass fiber pultrusion plate 102 are interlaminar mixed.
Fig. 1E shows a fifth embodiment according to the present invention.
In the fifth embodiment, 3 carbon fiber pultrusion plates 101 are placed on the first layer, 2 carbon fiber pultrusion plates 101 are placed on the second layer, 1 carbon fiber pultrusion plate 101 is placed on the third layer, and different numbers of carbon fiber pultrusion plates 101 are arranged in the chord direction, so that the twisting and shearing centers of each layer generate chord direction deviation, the main beam generates twisting deformation when being subjected to bending load, the negative increase of the twisting direction can cause the attack angle of the blade to be reduced, and the load reducing effect is achieved.
Fig. 1F shows a sixth embodiment according to the present invention.
In the sixth embodiment, on each layer (which should have a plurality of carbon fiber pultruded sheets 101) in the fifth embodiment, the carbon fiber pultruded sheets 101 and the glass fiber pultruded sheets 102 are macroscopically aligned.
Fig. 1G shows a seventh embodiment according to the present invention.
Unlike the sixth embodiment, in the seventh embodiment, the carbon fiber pultruded sheet 101 and the glass fiber pultruded sheet 102 are in a macroscopic zigzag butt joint, which can reduce the damage caused by local stress jump.
Through the fifth embodiment, the sixth embodiment and the seventh embodiment, better passive load reduction of the main beam can be realized, for example, a specific mixed arrangement is designed along the chord direction y in a certain layer of the thickness direction x of the blade, the first carbon fiber pultrusion plate 101 and the first glass fiber pultrusion plate 102 which are locally connected are distributed on the first chord direction y coordinate position, the second carbon fiber pultrusion plate 101 and the second glass fiber pultrusion plate 102 which are locally connected are distributed on the second chord direction y coordinate position, and so on, the nth carbon fiber pultrusion plate 101 and the nth glass fiber pultrusion plate 102 which are locally connected are distributed on the nth chord direction y coordinate position, so that the connecting part 104 on the first chord direction y coordinate position, the connecting part 104 on the second chord direction y coordinate position and the connecting part 104 on the nth chord direction y coordinate position can be distributed in a staggered manner, and the blade can have a bending-twisting coupling effect, that is twisted and deformed under the condition of bending, this response of the structure is used to passively load down.
In a further preferred embodiment of the invention, one or more connecting portions 103 are provided at a connecting point 104 of the glass fiber pultruded sheet 102 and the carbon fiber pultruded sheet 101, the connecting portion 103 covering a first end of the carbon fiber pultruded sheet 101 and/or a second end of the glass fiber pultruded sheet 102.
In a further preferred embodiment of the invention, the connecting portion comprises one or more of a woven glass fiber fabric, a woven carbon fiber fabric, a non-woven glass fiber fabric, a non-woven carbon fiber fabric, and a roving glass fiber fabric, and other connecting portion materials are also conceivable under the teaching of the present invention. j connecting parts are stacked along the thickness direction x of the blade, and/or k connecting parts are stacked along the chord direction y of the blade, wherein j and k are integers from 1 to 100.
By this preferred solution, a better local strength of the girder, as well as providing a gentle geometrical transition, the reason is that, firstly, from the connecting part 104, the two sides of the carbon fiber pultrusion plate 101 and the glass fiber pultrusion plate 102 are all chamfered to transition from 0 to full thickness, a plurality of layers of fiber cloth (connecting parts 103) are respectively paved above and below the blank area of the connecting part 104, the staggered layer size of the fiber cloth (the connecting parts 103) is matched with the slope angle of the pultrusion plates at the two sides, the carbon fiber pultrusion plate 101 and the glass fiber pultrusion plate 102 which are locally connected are connected by utilizing the cloth layer of the connecting part 104, thereby not only meeting the requirements of strength but also meeting the requirements of geometric smooth transition, when the chamfer sides of the two pultrusion plates face to one side, the size of the fiber cloth (the connecting part 103) is gradually changed from small to large when the fiber cloth (the connecting part 103) is completely transited to full thickness from the connecting part closest to the two pultrusion plates. When the chamfers of the two pultrusion plates face to two sides, the two pultrusion plates are butted to just form slope angle matching, a plurality of layers of fiber cloth are arranged between the two plates, the gap between the two pultrusion plates is not in place, the fitting degree is better, the friction coefficient is increased, the two pultrusion plates do not move in a dislocation way, and the local rigidity is enhanced; in addition, the upper surface of the upper plate and the lower surface of the lower plate are respectively provided with a layer of fiber cloth and a layer of fiber cloth, and the fiber cloth form a local connection design integrally, so that the upper and lower surfaces of the two pultruded plates are smoother. The main beam is composed of two types of pultrusion plate main bodies and connecting parts 104 of the two types of pultrusion plate main bodies in the thickness direction x, so that more mobility is provided in the direction vertical to the thickness direction x of the main beam, such as the chord direction y; these activities facilitate the formation of the desired surface shape, such as a curved surface, of the main beam material prior to pouring, and thus can be cured after pouring to maintain the surface shape.
The carbon fiber pultrusion plate 101 and the glass fiber pultrusion plate 102 are provided with chamfers at two sides to transition to 0 from full thickness, x layers of fiber cloth are laid at the upper and lower parts of the middle blank area, the staggered layer size of the fiber cloth is matched with the slope angle of the pultrusion plates at two sides, the left pultrusion plate and the right pultrusion plate are connected by utilizing the middle cloth layer, and the requirements of strength and geometric smooth transition are met.
Fig. 2A shows an eighth embodiment according to the present invention.
In the eighth embodiment, the chamfered sides of the carbon fiber pultruded panel 101 and the glass fiber pultruded panel 102 face to one side, i.e. the first connection method when the carbon fiber pultruded panel 101 and the glass fiber pultruded panel 102 are mixed in the layer in the third, fifth, sixth and seventh embodiments;
fig. 2B shows a ninth embodiment according to the present invention.
In the ninth embodiment, the chamfers of the carbon fiber pultrusion plate 101 and the glass fiber pultrusion plate 102 face to two sides, that is, the second connection mode when the carbon fiber pultrusion plate 101 and the glass fiber pultrusion plate 102 are mixed in the layer in the third embodiment, the fifth embodiment, the sixth embodiment and the seventh embodiment; there are x layers of fiber cloth between the carbon fiber pultrusion plate 101 and the glass fiber pultrusion plate 102, and in addition, y and z layers of fiber cloth (connecting parts 103) are respectively arranged on the upper side of the carbon fiber pultrusion plate 101 and the lower side of the glass fiber pultrusion plate 102, and the whole body forms a local connection design.
Fig. 2C shows a tenth embodiment according to the present invention.
In the tenth embodiment, the carbon fiber pultruded sheet 101 has a chamfer and the glass fiber pultruded sheet 102 is smooth, i.e. in the fourth embodiment, the carbon fiber pultruded sheet 101 is inserted into the middle of the glass fiber pultruded sheet 102, and the first connection mode is used when the layers are mixed; the carbon fiber pultrusion plate 101 is inserted into the middle of the glass fiber pultrusion plate 102, a reliable and gentle connection design is also needed, and y and x layers of cloth (connecting parts 103) are respectively arranged above and below the carbon fiber pultrusion plate 101 to play a role in local connection.
In a second aspect of the invention, the aforementioned task is solved by a method of manufacturing a spar for a fan blade, comprising the steps of: providing one or more carbon fiber pultruded panels 101, arranging the carbon fiber pultruded panels 101 along the length direction z of the blade; providing one or more glass fiber pultrusion plates 102, and arranging the glass fiber pultrusion plates 102 along the length direction z of the blade; mixing the carbon fiber pultruded sheet 101 and the glass fiber pultruded sheet 102 in one or more combinations and in one or more ratios; the carbon fiber pultruded sheet 101 and the glass fiber pultruded sheet 102 are infiltrated with a first infusion material.
In a preferred embodiment of the invention, providing one or more pultruded sheets 101 of carbon fibers and one or more pultruded sheets 102 of glass fibers comprises the steps of: the carbon fiber pultrusion plate 101 is soaked and cured by a second perfusion material, and the glass fiber pultrusion plate 102 is soaked and cured by a third perfusion material; arranging one or more carbon fiber pultruded panels 101 and/or glass fiber pultruded panels 102 on top of each other, and providing a glass fiber infusion layer around each of said carbon fiber pultruded panels 101 for a second infusion; and arranging a glass fiber perfusion layer around each glass fiber pultrusion plate 102 for second perfusion.
The present invention also provides a method of manufacturing a wind turbine blade comprising the steps of: prefabricating a main beam by the method, placing the main beam in the shell, and performing third pouring with the shell; or providing one or more carbon fiber pultrusion plates 101, and arranging the carbon fiber pultrusion plates 101 in the shell along the length direction z of the blade; providing one or more glass fiber pultruded panels 102, and arranging the glass fiber pultruded panels 102 in the housing along the length direction z of the blade; and performing second pouring to integrally form the carbon fiber pultrusion plate 101, the glass fiber pultrusion plate 102 and other materials. The hybrid main beam can be used as a prefabricated main beam to be molded before the shell is molded and then placed between the shell and the shell for secondary injection; or initially both types of pultruded panels are placed in the shell in one piece with the rest of the shell.
In the main beam for the fan blade and the manufacturing method thereof provided by the invention, the carbon fiber is a material with high specific strength and high specific modulus, is expensive and limits the wide application of the carbon fiber. Thus, the present invention achieves the most efficient use of carbon fiber materials. Mixing carbon fiber and glass fiber is a more optimized design mode. Compared with the material level mixing of carbon glass hybrid weaving or carbon glass hybrid layering, the invention can bring larger design space from higher dimension mixing and is not limited by the material customization mixing ratio. In addition, various properties of the carbon fiber are very sensitive to the process stability, the pultrusion process is a process which is generally recognized to exert the properties of the carbon fiber material to the greatest extent and stably, and the properties of the glass fiber material can be stably solidified by pultrusion of the glass fiber. In conclusion, the main beam made of the carbon fiber pultrusion material and the glass fiber pultrusion material is mixed, so that the maximum potential of blade design can be exerted, and a product with the optimal cost performance is created.
Fig. 3A shows a schematic cross-sectional view perpendicular to the blade thickness direction of a wind turbine blade 1 employing a spar 100 according to the invention.
Fig. 3B shows a schematic cross-sectional view perpendicular to the blade length direction of a wind turbine blade 1 employing a spar 100 according to the invention.
As shown in fig. 3B, the blade 1 has a blade leading edge 2 and a blade trailing edge 8, and a portion of the blade 1 in front of the blade leading edge 2 and the blade trailing edge 8 is divided into a windward side 5 and a leeward side 6. The trailing edge beam 7 is arranged near the trailing edge 8 to improve the trailing edge strength. The main beams 100 are arranged on the windward 5 and leeward 6 sides, respectively, between the blade leading edge 2 and the blade trailing edge 8. The main beams 100 are connected by webs 4 to increase the stability of the blade and prevent inward collapse. Through the main beam 100 of the invention, the rigidity of the blade 1 can be improved, and the conformability of the main beam material is enhanced, thereby improving the pneumatic performance and the service life of the blade.
FIG. 4 illustrates a method flow 400 of manufacturing a spar for a wind turbine blade according to the present disclosure.
In step 402, providing one or more carbon fiber pultruded panels, the carbon fiber pultruded panels being stacked in a thickness direction, a length direction and/or a chord direction, wherein the carbon fiber pultruded panels are formed by curing a second potting material, wherein a glass fiber potting material is disposed between every two carbon fiber pultruded panels;
in step 404, providing one or more glass fiber pultruded panels stacked in a thickness direction, a length direction, and/or a chord direction, wherein the glass fiber pultruded panels are formed by curing a third potting material, wherein a glass fiber potting material is disposed between every two glass fiber pultruded panels; which may be disposed adjacent to the carbon fiber pultrusion plate;
at step 406, arranging one or more covering layers on the carbon fiber pultrusion plate and/or the glass fiber pultrusion plate on two sides of the main beam in the thickness direction; and
at step 408, the carbon fiber pultruded panel, the glass fiber pultruded panel, and the cover layer are infiltrated with a first infusion material.
The invention has at least the following beneficial effects: (1) the invention adopts the mixture of carbon fiber pultrusion and glass fiber pultrusion, solves the defect of insufficient rigidity of the pure glass fiber main beam, and also avoids the defect of overhigh price of the pure carbon fiber; the mixing ratio of the carbon fiber and the glass fiber can be adjusted at will to achieve the overall optimal cost performance; (2) carbon fiber and glass fiber composites exist in their respective best process: pultrusion; the hybrid material has a positive hybrid effect, namely, the rigidity of the hybrid material is improved due to the existence of the opposite side, and the hybrid material is superior to a pure theoretical value of a mixing relation; compared with a pure carbon fiber pultrusion blade, the glass fiber pultrusion blade has the mixing and buffering functions of glass fibers, can reduce the process sensitivity of carbon fibers, and improves the process and quality robustness of the carbon fibers; (3) the special local connection design can enable the carbon fiber pultrusion plate to start from the blade leaf, and the local connection design has two functions, one is to ensure that the local strength of the connection meets the requirement, and in addition, a gentle geometric transition is provided, so that the defects of resin enrichment and the like caused by suspension of the pultrusion plate are avoided; the carbon fiber pultrusion plate 101 and the glass fiber pultrusion plate 102 can be mixed on the same layer according to the design, also can be mixed on different layers, have local connection design, and can be randomly combined and arranged to the greatest extent; the local connection design is realized by a composite material cloth layer, and a soft laying layer is used for connecting two hard structures, so that the method is very flexible and proper;
in summary, the above embodiments describe in detail different configurations of the main beam for the fan blade and the manufacturing method thereof, and it is understood that the present invention includes, but is not limited to, the configurations listed in the above embodiments, and any modifications made on the configurations provided by the above embodiments are within the scope of the present invention. One skilled in the art can take the contents of the above embodiments to take a counter-measure.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. For the system disclosed by the embodiment, the description is relatively simple because the system corresponds to the method disclosed by the embodiment, and the relevant points can be referred to the method part for description.
The above description is only for the purpose of describing the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention, and any variations and modifications made by those skilled in the art based on the above disclosure are within the scope of the appended claims.

Claims (14)

  1. A main beam for a fan blade, comprising:
    one or more carbon fiber pultruded panels arranged along the length of the blade;
    one or more glass fiber pultruded panels arranged along a length direction of the blade, wherein the carbon fiber pultruded panels and the glass fiber pultruded panels are mixedly arranged such that the mixed carbon fiber pultruded panels and glass fiber pultruded panels have a positive intermixing effect and/or a kink coupling effect; and
    the first filling material is used for infiltrating the carbon fiber pultrusion plate and the glass fiber pultrusion plate.
  2. The spar of claim 1, wherein m of the carbon pultruded sheets are stacked in a thickness direction of the blade and/or n of the carbon pultruded sheets are stacked in a chord direction of the blade in a region of the spar, wherein m and n are integers from 1 to 100.
  3. The spar of claim 1, wherein p of the glass fiber pultruded panels are stacked in the thickness direction of the blade and/or q of the glass fiber pultruded panels are stacked in the chord direction of the blade in a region of the spar where p and q are integers from 1 to 100.
  4. The girder of claim 1, wherein the carbon fiber pultruded panel is cured using the second infusion material and the glass fiber pultruded panel is cured using the third infusion material.
  5. The main beam of claim 4, wherein the first potting material comprises one or more of: containing thermosetting epoxy resin, vinyl resin, unsaturated polyester resin, phenol resin, bismaleimide, and thermoplastic resin;
    the second potting material comprises one or more of: containing thermosetting epoxy resin, vinyl resin, unsaturated polyester resin, phenol resin, bismaleimide, and thermoplastic resin;
    the third potting material comprises one or more of: the thermosetting epoxy resin, vinyl resin, unsaturated polyester resin, phenol resin, bismaleimide and thermoplastic resin are contained.
  6. The main beam of claim 5, wherein said thermoplastic resin comprises one or more of the following: polypropylene resins, polyethylene resins, polyvinyl chloride resins, polystyrene resins, polyacrylonitrile-butadiene-styrene resins, polyurethanes, polyimide resins, polyether ether ketone resins, and polyphenylene sulfide resins.
  7. The main beam of claim 1, wherein the ends of the carbon fiber pultruded panels are connected to the ends of the glass fiber pultruded panels at one or more layers in the thickness direction of the blade, and/or the ends of the carbon fiber pultruded panels are inserted between two of the glass fiber pultruded panels, and/or the ends of the glass fiber pultruded panels are inserted between two of the carbon fiber pultruded panels.
  8. The girder of claim 7, wherein at the connection between the pultruded glass fiber sheet and the pultruded carbon fiber sheet, one or more connection portions cover the ends of the pultruded carbon fiber sheet and/or the ends of the pultruded glass fiber sheet.
  9. The main beam of claim 8, wherein the connecting portions comprise one or more of woven fiberglass, woven carbon fiber, non-woven fiberglass, non-woven carbon fiber, and woven fiberglass roving, and wherein j of the connecting portions are stacked in the thickness direction of the blade, and/or k of the connecting portions are stacked in the chord direction of the blade, and wherein j and k are integers from 1 to 100.
  10. The main beam of claim 1, wherein the carbon fiber pultruded panel starts at 0.1% to 99.9% of the blade length and ends at 0.1% to 99.9% of the blade length.
  11. A method of manufacturing a spar for a fan blade, comprising the steps of:
    providing one or more carbon fiber pultruded panels arranged along the length of the blade;
    providing one or more glass fiber pultrusion plates, and arranging the glass fiber pultrusion plates along the length direction of the blade;
    mixing the carbon fiber pultrusion plate and the glass fiber pultrusion plate to enable the mixed carbon fiber pultrusion plate and the glass fiber pultrusion plate to have a positive mixing effect and/or a bending and twisting coupling effect; and
    and infiltrating the carbon fiber pultrusion plate and the glass fiber pultrusion plate with a first filling material.
  12. The method of claim 11, wherein providing one or more pultruded panels of carbon fiber and providing one or more glass fiber pultruded panels comprises the steps of:
    the carbon fiber pultrusion plate is soaked and cured by a second perfusion material, and the glass fiber pultrusion plate is soaked and cured by a third perfusion material;
    arranging one or more carbon fibre pultruded sheets and/or glass fibre pultruded sheets on top of each other, and
    arranging a perfusion layer around each carbon fiber pultrusion plate for second perfusion; and
    and arranging a perfusion layer around each glass fiber pultrusion plate for second perfusion.
  13. A method of manufacturing a wind turbine blade, comprising the steps of:
    prefabricating a main beam by the method of claim 11, placing the main beam in a shell, and performing a third pouring with the shell; or
    Providing one or more carbon fiber pultruded panels arranged within the shell along the length of the blade;
    providing one or more glass fiber pultruded panels disposed within the housing along the length of the blade;
    and (5) performing secondary filling to integrally form the carbon fiber pultrusion plate, the glass fiber pultrusion plate and other materials.
  14. A wind power generator having a main beam according to any one of claims 1 to 10.
CN202080003490.4A 2020-07-28 2020-07-28 Main beam for fan blade and manufacturing method thereof Active CN114286891B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2020/105013 WO2022021039A1 (en) 2020-07-28 2020-07-28 Main beam for use in wind-driven generator blade and manufacturing method therefor

Publications (2)

Publication Number Publication Date
CN114286891A true CN114286891A (en) 2022-04-05
CN114286891B CN114286891B (en) 2023-10-20

Family

ID=80038038

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202080003490.4A Active CN114286891B (en) 2020-07-28 2020-07-28 Main beam for fan blade and manufacturing method thereof

Country Status (5)

Country Link
CN (1) CN114286891B (en)
GB (1) GB2611677B (en)
MX (1) MX2023000890A (en)
WO (1) WO2022021039A1 (en)
ZA (1) ZA202300355B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115054952B (en) * 2022-07-22 2023-08-08 合肥茂腾环保科技有限公司 Stripping liquid wastewater treatment atomization treatment device
CN117162561B (en) * 2023-11-02 2024-03-22 中材科技风电叶片股份有限公司 Thermoplastic composite girder forming method and wind power blade girder

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102465844A (en) * 2010-11-04 2012-05-23 三一电气有限责任公司 Wind driven generator blade
CN103921457A (en) * 2014-04-28 2014-07-16 连云港中复连众复合材料集团有限公司 Method for manufacturing main beam or auxiliary beam of fan blade by unidirectional sheets manufactured by use of pultrusion process
CN106368894A (en) * 2015-07-22 2017-02-01 通用电气公司 Rotor blade root assembly for wind turbine
US20180156202A1 (en) * 2016-12-05 2018-06-07 Nordex Energy Gmbh Spar cap assembly for a wind turbine rotor blade
CN109094075A (en) * 2017-06-21 2018-12-28 通用电气公司 Wind turbine blade and related production with mixing spar caps
CN109098929A (en) * 2017-06-21 2018-12-28 通用电气公司 The associated method of wind turbine blade and manufacture with hybrid spar caps
CN210859042U (en) * 2019-10-15 2020-06-26 中材科技风电叶片股份有限公司 Main beam cap splicing structure and fan rotor blade

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2497578B (en) * 2011-12-16 2015-01-14 Vestas Wind Sys As Wind turbine blades

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102465844A (en) * 2010-11-04 2012-05-23 三一电气有限责任公司 Wind driven generator blade
CN103921457A (en) * 2014-04-28 2014-07-16 连云港中复连众复合材料集团有限公司 Method for manufacturing main beam or auxiliary beam of fan blade by unidirectional sheets manufactured by use of pultrusion process
CN106368894A (en) * 2015-07-22 2017-02-01 通用电气公司 Rotor blade root assembly for wind turbine
US20180156202A1 (en) * 2016-12-05 2018-06-07 Nordex Energy Gmbh Spar cap assembly for a wind turbine rotor blade
CN109094075A (en) * 2017-06-21 2018-12-28 通用电气公司 Wind turbine blade and related production with mixing spar caps
CN109098929A (en) * 2017-06-21 2018-12-28 通用电气公司 The associated method of wind turbine blade and manufacture with hybrid spar caps
CN210859042U (en) * 2019-10-15 2020-06-26 中材科技风电叶片股份有限公司 Main beam cap splicing structure and fan rotor blade

Also Published As

Publication number Publication date
CN114286891B (en) 2023-10-20
MX2023000890A (en) 2023-02-22
WO2022021039A1 (en) 2022-02-03
GB2611677B (en) 2024-04-03
GB2611677A (en) 2023-04-12
ZA202300355B (en) 2024-02-28

Similar Documents

Publication Publication Date Title
EP2134963B1 (en) Method of fabricating a wind turbine blade assembly
CN101255847B (en) Wind turbine multi-panel blade
CN109098929B (en) Wind turbine blade with hybrid spar cap and associated method of manufacture
US20140271217A1 (en) Efficient wind turbine blade design and associated manufacturing methods using rectangular spars and segmented shear web
CN106401865A (en) Rotor blade with interior shelf for a flat plate spar cap
CN104114856A (en) Wind turbine blades
KR20110100192A (en) Wind turbine blade and wind turbine generator using the same
AU2020430267B2 (en) Main beam for fan blade and manufacturing method therefor
CN114286891B (en) Main beam for fan blade and manufacturing method thereof
CN114183296B (en) Wind-powered electricity generation blade spanwise piecemeal connection structure
CN113357075A (en) Wind power blade and wind driven generator
CN114526193A (en) Wind power blade main bearing structure connecting joint and wind generating set
CN115666913A (en) Pultruded fiber-reinforced strip for reinforcing structures such as spar caps
CN210622996U (en) Main beam and blade of wind generating set and wind generating set
WO2021214726A1 (en) Wind turbine blade with reinforcing structure
EP3930990A1 (en) A flexible preform mould for manufacturing a preform for a wind turbine blade
CN113954388B (en) Prefabricated limiting part, spar cap, fan blade, manufacturing method and prefabricated plate fixing method
CN112840120A (en) Wind turbine blade with multiple spar caps
CN212642950U (en) Fan blade and wind driven generator
CN115485126A (en) Optimized interlayer for spar caps of wind turbine blades
CN114347576A (en) Main beam of blade and blade
CN115485127A (en) Wind turbine blade
CN114623040A (en) Reinforced glass fiber fabric for blade root of wind power generation blade
CN117581013A (en) Blade for a wind turbine
CN113738572A (en) Novel wind-powered electricity generation blade girder, wind-powered electricity generation blade

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant