Manufacturing method of wind power blade, wind power blade and wind generating set

Abstract

The invention discloses a manufacturing method of a wind power blade, the wind power blade and a wind generating set. The manufacturing method of the wind power blade comprises the steps that a mold is provided, wherein the mold comprises a flanging prismatic table arranged along the outer edge; a rear edge bonding corner is laid, the rear edge bonding corner comprises a first bonding corner part and a second bonding corner part which are integrated, the first bonding corner part is laid by being attached to the inner surface of the mold, and the second bonding corner part is laid on the flanging prismatic table; a mold closing part and an anti-movement prefabricated part are sequentially placed on the first bonding corner part, the anti-movement prefabricated part comprises a butt joint face and a bonding corner bonding face, the mold closing part comprises a mold closing part inclined face, and the butt joint face is in butt joint with the mold closing part inclined face; and folding the second bonding corner part and bonding the second bonding corner part with the bonding corner bonding surface to form the die assembly fixing structure. According to the manufacturing method of the wind power blade, the flatness of the combined bonding area of the rear edge of the wind power blade is improved, resin distribution is improved, the blade forming quality is guaranteed, and the blade maintenance cost is reduced.

Description

Technical Field

[0001] The present application belongs to the technical field of wind turbine blade manufacturing, and in particular, relates to a method for manufacturing a wind turbine blade, a wind turbine blade, and a wind turbine generator set. Background Art

[0002] With the development of science and technology, clean green energy has become one of the main energy sources in today's era. As the main green energy, wind energy has occupied the mainstream of green energy development. With the increasing demand for green energy, the length of wind turbine blades has increased rapidly. Wind turbine blades of 100 meters and above have occupied a dominant position in the blade industry.

[0003] As the blade shape of wind turbine blades increases, the difficulty of quality control of wind turbine blades increases. As an important component for blade bonding, the trailing edge combined bonding area of ​​wind turbine blades is prone to quality problems such as wrinkles and resin richness. Summary of the invention

[0004] The embodiments of the present application provide a method for manufacturing a wind turbine blade, a wind turbine blade, and a wind turbine generator set, which can improve the flatness of the trailing edge combined bonding area of ​​the wind turbine blade and improve the resin distribution.

[0005] In a first aspect, a method for manufacturing a wind turbine blade is provided, comprising: providing a mold, the mold comprising a flanged prism arranged along an outer edge; laying a trailing edge bonding angle, the trailing edge bonding angle comprising an integrated first bonding angle portion and a second bonding angle portion, the first bonding angle portion being laid in contact with the inner surface of the mold, and the second bonding angle portion being laid on the flanged prism; placing a mold clamping piece and an anti-movement preformed piece on the first bonding corner in sequence, wherein the anti-movement preformed piece comprises a butt joint surface and a bonding angle pasting surface, the mold clamping piece comprises a mold clamping piece inclined surface, and the butt joint surface is butt joint with the mold clamping piece inclined surface; folding the second bonding angle portion and pasting it to the bonding angle pasting surface to form a mold clamping piece fixing structure; utilizing the mold clamping piece fixing structure to form a wind turbine blade in subsequent processes.

[0006] The manufacturing method of the wind turbine blade provided in the embodiment of the present application places an anti-movement preformed part in the mold bevel area of ​​the mold clamping part, and fixes the anti-movement preformed part in the combined bonding area, which plays the role of fixing the mold bevel of the mold clamping part and supporting the bonding angle cloth layer of the trailing edge, thereby improving the flatness of the combined bonding area of ​​the trailing edge of the wind turbine blade and improving the resin distribution, thereby ensuring the blade molding quality and reducing the blade maintenance cost.

[0007] In some achievable embodiments, the steps of placing the mold component and the anti-movement preform in sequence on the first bonding corner include: laying the mold component wrapping cloth on the rear edge bonding corner, the mold component wrapping cloth having a first wrapping portion and a second wrapping portion, the first wrapping portion being laid on the first bonding corner, and the second wrapping portion being laid on the second bonding corner; placing the mold component against the first wrapping portion, and then folding the second wrapping portion and pasting it on the pasting surface of the second wrapping portion of the mold component, the mold component wrapping cloth forms a semi-enclosed structure for the mold component, and the butt joint surface is butted against the oblique surface of the mold component, wherein the chordal edges of the mold component wrapping cloth are staggered.

[0008] In some achievable embodiments, the step of laying the mold component wrapping cloth on the trailing edge bonding angle includes: positioning the mold component placement position according to the reference line of the trailing edge bonding angle; laying the mold component wrapping cloth on the trailing edge bonding angle according to the reference line position.

[0009] In some achievable methods, the steps of sequentially placing the mold closing piece and the anti-movement preform on the first bonding corner include: sealing the anti-movement preform with a non-porous film; pasting the sealed anti-movement preform's conforming surface with a continuous felt and placing it against the inner side of the mold, and making the butt joint surface butt joint with the inclined surface of the mold closing piece.

[0010] In some feasible embodiments, the mold may further include a plurality of flange positioning blocks arranged around the flange edge; utilizing the mold fixing structure, the subsequent steps of forming a wind turbine blade include: covering the upper surface of the mold fixing structure with a demolding cloth, a porous film, and an anti-seam cloth; and fixing a bonding angle tooling on the upper surface of the mold fixing structure according to the position of the flange positioning block.

[0011] In some feasible methods, the use of the clamping component fixing structure to form wind turbine blades in subsequent processes may also include: after the auxiliary materials and the exhaust system are arranged, the entire product area is vacuum-sealed using a vacuum film; a vacuum negative pressure operation is performed in the product area, and a pre-vacuum operation is performed in the product area, and at the same time, the clamping component and the anti-movement prefabricated component are pushed toward the mold to prevent the clamping component and the anti-movement prefabricated component from being displaced by the vacuum pressure and the mold from creating a gap that causes resin accumulation during the infusion process; after the clamping is completed, the anti-movement prefabricated component is removed.

[0012] In some achievable embodiments, a first gap is maintained between the butt joint surface and the inclined surface of the mold clamping piece, and the first gap is ≤2 mm; and / or a second gap is maintained between the mold clamping piece and the mold, and the second gap is ≤5 mm.

[0013] In some achievable embodiments, there are multiple mold clamping pieces, the anti-movement preform corresponds to the mold clamping piece at the edge of the mold, and the chord-wise gap between every two mold clamping pieces is ≤2 mm.

[0014] In some achievable embodiments, the cross-section of the anti-movement preform is the same as that of the molded part, and the manufacturing method of the anti-movement preform is the same as that of the molded part; and / or, the material of the anti-movement preform is polyvinyl chloride and / or polyethylene terephthalate.

[0015] In some practicable embodiments, the mold clamping piece includes a docking block having a mold clamping slope and a main body block detachably connected to the docking block.

[0016] In some practicable embodiments, the docking block and the main body block are bonded together by means of structural adhesive, and the thickness of the structural adhesive is 2 mm to 10 mm.

[0017] In a second aspect, a wind turbine blade is manufactured by the manufacturing method of the first aspect.

[0018] In a third aspect, a wind turbine generator set comprises the wind turbine blade according to the second aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 This is a flow chart of a method for manufacturing a blade provided in one embodiment of the present application.

[0021] Figure 2 yes Figure 1 The structural schematic diagram corresponding to step S2 is shown.

[0022] Figure 3 yes Figure 1 The structural schematic diagram corresponding to step S3 is shown.

[0023] Figure 4 yes Figure 1 The structural schematic diagram corresponding to step S4 is shown.

[0024] Figure 5 This is a flow chart of a method for manufacturing a blade provided in another embodiment of the present application.

[0025] Figure 6 This is a flow chart of a method for manufacturing a blade provided in another embodiment of the present application.

[0026] Figure 7 This is a flow chart of a method for manufacturing a blade provided in another embodiment of the present application.

[0027] Figure 8This is a flow chart of a method for manufacturing a blade provided in another embodiment of the present application.

[0028] Fig. 9 yes Figure 8 The structural schematic diagram corresponding to step S7 is shown.

[0029] Fig.10 yes Figure 8 The schematic diagram of the structural cross section corresponding to step S7 is shown.

[0030] Fig.11 This is a flow chart of a method for manufacturing a blade provided in another embodiment of the present application.

[0031] Fig.12 It is a schematic diagram of the structure of a wind turbine generator set provided in one embodiment of the present application.

[0032] In the drawings, the drawings are not necessarily drawn to scale.

[0033] In the attached figure:

[0034] 100-blades; 200-wind turbine generator set;

[0035] 10-mold; 20-rear edge bonding angle; 21-first bonding angle; 22-second bonding angle; 30-mold clamping part; 40-anti-movement prefabricated part; 50-bonding angle tooling. DETAILED DESCRIPTION

[0036] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In the detailed description below, many specific details are proposed to provide a comprehensive understanding of the present application. However, it is obvious to those skilled in the art that the present application can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by illustrating examples of the present application. In the accompanying drawings and the following description, at least some of the known structures and technologies are not shown to avoid unnecessary ambiguity in the present application; and, for clarity, the size of some structures may be exaggerated. In addition, the features, structures or characteristics described below may be combined in one or more embodiments in any suitable manner.

[0037] The directional words appearing in the following description are all directions shown in the figures, and do not limit the specific structures in the molding mold and molding method of this application. In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the meaning of "multiple" is more than two, and the terms "installation" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected; the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "inside", "outside", etc. are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0038] In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0039] In addition, the term "and / or" in this article is only a description of the association relationship between the associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0040] It should be understood that in the embodiment of the present application, "B corresponding to A" means that B is associated with A, and B can be determined according to A. However, it should also be understood that determining B according to A does not mean determining B only according to A, and B can also be determined according to A and / or other information.

[0041] With the development of science and technology, clean green energy has become one of the main energy sources in today's era. As the main green energy, wind energy has occupied the mainstream of green energy development. With the growing demand for green energy, the length of wind turbine blades has increased rapidly. Wind turbine blades of 100 meters and above have occupied a dominant position in the blade industry. As the blade shape of wind turbine blades becomes larger, the quality control of wind turbine blades becomes more difficult. As an important component of wind turbine blade bonding, the combined bonding area at the trailing edge of the wind turbine blade is an important component of wind turbine blade bonding. The quality control of wrinkles, resin-rich and other aspects in this area is even more urgent.

[0042] At present, the common methods for quality control of the bonding area of ​​wind turbine blade assemblies are as follows: 1. After the mold parts (commonly used mold PVC) are laid out in accordance with the mold, a fiberglass pad is placed on the bonding surface of the triangular area of ​​the mold PVC head and in the bonding area of ​​the trailing edge bonding angle. During vacuum tightening, the bonding angle cloth layer is supported by the pad in the hypotenuse area of ​​the mold PVC triangle to prevent wrinkles from forming. However, the pad has a low hardness and the vacuum tightening force is large. When the trailing edge bonding angle is wide and has many cloth layers, the pad's support is insufficient, and there is a risk of wrinkles. 2. After the bonding angle and the mold PVC are laid out in accordance with the mold, the auxiliary materials are arranged and the bonding angle tooling is installed. The upper end of the bonding angle cloth layer is clamped and fixed at the upper edge of the bonding angle tooling with a clamp. After the vacuum wrapping is completed, a soft cushion is placed between the clamp and the vacuum film for protection, and then the clamp is clamped in the original position of the bonding angle tooling, leaving enough space for the vacuum film to be stretched flat in accordance with the mold. When the vacuum is tightened, the adhesive corner fabric layer is clamped by the clamp to prevent it from sliding down and causing wrinkles. However, clamping the adhesive corner fabric layer can effectively prevent the adhesive corner fabric layer from sliding down. When the arc of the triangular block of the mold-jointed PVC head is large, the sliding force of the fabric layer will have a reverse force on the mold-jointed PVC and the mold fitting surface, which is easy to cause a gap between the adhesive corner and the mold-jointed PVC, and there is a risk of resin-rich defects.

[0043] In order to solve the above problems, the embodiments of the present application provide a blade manufacturing method, a blade and a wind turbine generator set. The manufacturing method can improve the flatness of the trailing edge combined bonding area of ​​the wind turbine blade and improve the resin distribution.

[0044] The embodiment of the present application first provides a method for manufacturing a wind turbine blade, which can be used to manufacture a wind turbine blade by vacuum infusion molding. The wind turbine blade can be optionally applied to a wind turbine generator set.

[0045] In order to better understand this application, Figures 1 to 12 The manufacturing method of the wind turbine blade, the wind turbine blade and the wind turbine generator set provided in the embodiments of the present application are described in detail.

[0046] Please also read Figures 1 to 4 , Figure 1 is a flow chart of a method for manufacturing a wind turbine blade 100 provided in one embodiment of the present application. Figure 2 yes Figure 1 The structural schematic diagram corresponding to step S2 is shown, Figure 3 yes Figure 1 The structural schematic diagram corresponding to step S3 is shown, Figure 4 yes Figure 1 A schematic diagram of the structure corresponding to step S4.

[0047] The embodiment of the present application provides a method for manufacturing a wind turbine blade 100, comprising:

[0048] S1. Provide a mold 10, wherein the mold 10 includes a flanged edge arranged along the outer edge.

[0049] S2. Lay the rear edge bonding corner 20. The rear edge bonding corner 20 includes an integrated first bonding corner portion 21 and a second bonding corner portion 22. The first bonding corner portion 21 is laid in contact with the inner surface of the mold 10, and the second bonding corner portion 22 is laid on the flange edge.

[0050] S3. Place the mold clamping piece 30 and the anti-movement preformed piece 40 in sequence on the first bonding corner 21, wherein the anti-movement preformed piece 40 includes a butt joint surface and a bonding corner pasting surface, and the mold clamping piece 30 includes a mold clamping piece inclined surface, and the butt joint surface is butt joint with the mold clamping piece inclined surface.

[0051] S4, folding the second bonding corner portion 22 and bonding it to the bonding corner bonding surface to form a fixed structure of the mold assembly 30.

[0052] S5. Use the mold assembly to fix the structure and form the wind turbine blade through subsequent processes.

[0053] In step S1, a corresponding mold 10 is first provided, the mold 10 having an inner surface matching the shape of the wind turbine blade 100 to be formed, and used to manufacture the wind turbine blade 100 by laying layers and curing in the mold 10. Specifically, the shape of the inner surface of the mold 10 is designed according to the shape of the required wind turbine blade 100, and the mold 10 includes a flanged edge arranged along the outer edge.

[0054] In step S2, the material of the trailing edge bonding corner 20 can be glass fiber reinforced composite material (GFRP), carbon fiber reinforced composite material (CFRP) or polyurethane material, the first bonding corner 21 is laid and glued to the inner surface of the mold 10, and the second bonding corner 22 is placed on the flange edge.

[0055] In step S3, the conforming surface of the anti-movement preform 40 is a curved surface, and the conforming surface of the anti-movement preform 40 can be appropriately extended as required to increase the stability of the anti-movement preform 40. On the opposite side of the conforming surface, the other surface can be a plane or a curved surface, which can be specifically designed according to its processing technology and the required weight, volume and other parameters, and the present application does not make any specific limitations on this.

[0056] Optionally, the mold clamping member 30 is a mold clamping PVC, and the mold clamping PVC is set according to parameters such as the structure and size of the blade 100 to be molded.

[0057] Optionally, the mold-fitting surface of the mold clamping part 30 can be extended to ensure that the contact surface between the mold clamping part 30 and the mold 10 is stable, effectively preventing the mold clamping part 30 from sliding down and flipping during the vacuum tightening process, causing quality defects.

[0058] In step S4, the second bonding corner 22 is smoothly pasted on the bonding corner pasting surface. After the laying is completed, the side of the second bonding corner 22 away from the fixed structure of the clamping piece 30 can be rolled by a mop or the like, so that the second bonding corner 22 and the anti-movement prefabricated part 40 and the corresponding partial area of ​​the clamping piece 30 can be evenly and reliably bonded and connected. In this way, the anti-movement prefabricated part 40 can be stably fixed to the clamping piece 30, reducing the possibility of resin-rich problems at this position during injection molding, and effectively fixing the cloth layer of the rear edge bonding corner 20.

[0059] Optionally, the method for manufacturing the blade 100 in the embodiment of the present application does not impose any particular limitation on the specific manner of curing and molding the blade 100 , and any suitable molding method may be used.

[0060] The inventors found that placing an anti-movement preform 40 in the mold bevel area of ​​the mold clamping part 30 and fixing the anti-movement preform 40 in the combined bonding area can fix the mold bevel of the mold clamping part 30 and the supporting trailing edge bonding angle 20 layer, thereby improving the flatness of the trailing edge combined bonding area of ​​the wind turbine blade and improving the resin distribution, ensuring the blade molding quality and reducing the blade maintenance cost.

[0061] Please also read Figure 5 , Figure 5 This is a flow chart of a method for manufacturing a blade provided in another embodiment of the present application.

[0062] In some optional embodiments, the step S3 of sequentially placing the mold closing member 30 and the anti-movement preform 40 on the first bonding corner portion 21 may further include:

[0063] S31. Lay the mold closing component wrapping cloth on the rear edge bonding corner 20. The mold closing component wrapping cloth has a first wrapping portion and a second wrapping portion. The first wrapping portion is laid on the first bonding corner 21, and the second wrapping portion is laid on the second bonding corner 22.

[0064] S32, place the mold clamping part 30 against the first wrapping part, and then fold the second wrapping part and stick it to the sticking surface of the second wrapping part of the mold clamping part 30. The mold clamping part wrapping cloth forms a semi-enclosed structure for the mold clamping part 30, thereby avoiding damage to the mold clamping part 30 and making the butt joint surface butt joint with the inclined surface of the mold clamping part.

[0065] Optionally, the chordal edges of the molded component wrapping cloth are arranged in staggered layers, thereby improving the tensile and shear resistance, and at the same time improving the sealing and waterproof performance.

[0066] Optionally, the first wrapping portion is pressed and pasted on the first bonding corner portion 21, and then the first wrapping portion is pasted against the conformal surface of the mold assembly 30, and then the second wrapping portion is folded and pasted on the pasting surface of the second wrapping portion of the mold assembly 30 to further reduce the possibility of gaps between layers.

[0067] Please also read Figure 6 , Figure 6 This is a flow chart of a method for manufacturing a blade provided in another embodiment of the present application.

[0068] In some optional embodiments, the step S31 of laying the molded component wrapping cloth on the trailing edge bonding corner 20 may also include:

[0069] S311 , positioning the mold assembly 30 according to the reference line of the rear edge bonding angle 20 .

[0070] S312, the mold assembly wrapping cloth is laid on the rear edge bonding angle 20 according to the reference line position.

[0071] Optionally, the reference line is drawn based on the rear edge, after being translated into the cavity at a set distance at the axial full meter position, and the center line of the mold wrapping cloth is aligned with the reference line to ensure accurate installation and product quality and consistency.

[0072] Please also read Figure 7 , Figure 7 This is a flow chart of a method for manufacturing a blade provided in another embodiment of the present application.

[0073] In some optional embodiments, the step S3 of sequentially placing the mold closing member 30 and the anti-movement preform 40 on the first bonding corner portion 21 may further include:

[0074] S33, using a non-porous film to seal the anti-movement preform 40 to ensure the subsequent removal of the anti-movement preform 40.

[0075] S34, the sealed anti-movement preform 40 is pasted with continuous felt on its contoured surface and then placed against the inner side of the mold 10, and the butt joint surface is butted against the inclined surface of the mold clamping part.

[0076] Please also read Figure 8 , Fig. 9 and Fig.10 , Figure 8 is a flow chart of a method for manufacturing a blade provided in another embodiment of the present application. Fig. 9 yes Figure 8 The structural schematic diagram corresponding to step S7 is shown, Fig.10 yes Figure 8 The schematic diagram of the structural cross section corresponding to step S7 is shown.

[0077] In some optional embodiments, the mold 10 may further include a plurality of flange positioning blocks arranged around the flange prism. In this embodiment, the step S5 of forming a wind turbine blade by using the mold clamping fixing structure in the subsequent process includes:

[0078] S6. Cover the upper surface of the fixed structure of the mold clamping part 30 with a release cloth, a porous film, and an anti-caulking cloth.

[0079] S7. Fix the bonding corner tooling 50 on the upper surface of the fixed structure of the mold clamping part 30 according to the position of the flanging positioning block.

[0080] Specifically, the edge of the demoulding cloth can be fixed to the edge of the mold 10 or other fixed positions with an adhesive. For example, the adhesive is evenly sprayed on the edge of the demoulding cloth, and a section is sprayed at a certain distance to ensure that the demoulding cloth is firmly attached to the surface of the mold 10. Similar to the demoulding cloth, the porous membrane is fixed in an appropriate manner. Then the anti-caulking cloth is placed in a determined position to ensure that it completely covers the gap. Finally, according to the position of the flange positioning block, the bonding corner fixture 50 is placed on the upper surface of the fixed structure of the clamping piece 30. When placing the bonding corner fixture 50, the cloth layer of the rear edge bonding corner 20 is appropriately lifted to ensure that the bonding corner fixture 50, the rear edge bonding corner 20, the clamping piece 30 and the anti-movement preform 40 are tightly fitted without gaps, and the cloth layer of the rear edge bonding corner 20 is smooth and wrinkle-free.

[0081] Please also read Fig.11 , Fig.11 This is a flow chart of a method for manufacturing a blade provided in another embodiment of the present application.

[0082] In some practicable manners, the step S5 of using the mold assembly fixing structure to form the wind turbine blade in a subsequent process in this embodiment may also include:

[0083] S8. After the auxiliary materials and the exhaust system are arranged, the entire product area will be vacuum sealed using a vacuum film.

[0084] S9. Perform vacuum negative pressure operation in the product area, perform pre-vacuum operation in the product area, and at the same time push the clamping part 30 and the anti-movement preform 40 toward the mold 10 to prevent the clamping part 30 and the anti-movement preform 40 from being displaced by the vacuum pressure and the mold 10 from generating gaps to cause resin accumulation during the infusion process.

[0085] S10, after the mold is closed, the anti-movement preform 40 is removed, for example, by using a crowbar or the like.

[0086] In some optional embodiments, a first gap is maintained between the butt joint surface and the inclined surface of the clamping part, and the first gap is ≤2mm. In the present embodiment, the first gap ≤2mm can effectively improve the fixing effect of the anti-movement fixing part on the clamping part 30; and or, a second gap is maintained between the clamping part 30 and the mold 10, and the second gap is ≤5mm. In the present embodiment, the second gap ≤5mm can effectively prevent resin leakage and ensure the vacuum degree and molding quality.

[0087] In some optional embodiments, there are multiple clamping pieces 30, the anti-movement preform 40 corresponds to the clamping piece 30 at the edge of the mold 10, the chordal gap between every two clamping pieces 30 is ≤2mm, and the multiple clamping pieces 30 cooperate with each other to enhance the sealing effect and better fill the gap.

[0088] In some optional embodiments, the cross-section of the anti-movement preform 40 is the same as the cross-section of the mold component 30, and the manufacturing method of the anti-movement preform 40 is the same as the manufacturing method of the mold component 30; and / or, the material of the anti-movement preform 40 is polyvinyl chloride and / or polyethylene terephthalate.

[0089] Specifically, in the model, the starting point of the mold part 30 is extended toward the blade root, and a three-dimensional simulation diagram of the trailing edge area of ​​the blade is output. The extension length is determined according to the specific requirements of the wind turbine blade. The arc surface of the conformal surface of the anti-movement preform 40 can be appropriately extended as required, and finally the anti-movement preform 40 is formulated according to the conformal surface of the anti-movement preform 40 with the most stable placement.

[0090] In some optional embodiments, the mold clamping piece 30 includes a docking block having a mold clamping slope and a main body block detachably connected to the docking block. The mold clamping slope usually has a complex geometric shape, which may be a gradual curved surface or have a special angle. The mold clamping piece mold with relatively simple designs of the docking block and the main body block can reduce the difficulty of manufacturing the mold clamping piece mold.

[0091] In some feasible methods, the docking block and the main body block are bonded by structural adhesive, and the thickness of the structural adhesive is 2 mm to 10 mm. The thickness of the structural adhesive is 2 mm to 10 mm, which can ensure the structural strength of the mold part 30 while avoiding the influence of the structural adhesive on subsequent processes.

[0092] Optionally, the butt joint block and the main body block are both precast by injection molding, and the butt joint position is reinforced by hand lay-up after bonding with structural adhesive.

[0093] See also Fig.12 , Fig.12 1 is a schematic diagram of the structure of a wind turbine generator set 200 provided in one embodiment of the present application. In a second aspect, according to an embodiment of the present application, a blade 100 is provided, which is manufactured by the manufacturing method in any embodiment of the first aspect.

[0094] In a third aspect, according to an embodiment of the present application, a wind turbine generator set 200 is proposed, comprising the blade 100 in any embodiment of the second aspect.

[0095] Optionally, the wind turbine generator set 200 includes a tower, a nacelle and a wind rotor. The nacelle is arranged at the top of the tower. The wind rotor includes a hub and a wind turbine blade 100. The wind turbine blade 100 is connected to the hub. The hub is connected to the main shaft of the nacelle. The wind turbine blade 100 can generate torque under the action of wind. The wind turbine blade 100 and the hub drive the main shaft of the nacelle to rotate, thereby converting wind energy into mechanical energy. The main shaft of the nacelle can be connected to the rotor of the generator, thereby converting mechanical energy into electrical energy.

[0096] The blade 100 and the wind turbine generator set 200 in the embodiment of the present application have all the beneficial effects of the blade manufacturing method in the first aspect. For details, please refer to the specific description of the blade manufacturing method in the above embodiments, and this embodiment will not be repeated here.

[0097] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed in the present application, and these modifications or replacements should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A method for manufacturing a wind turbine blade, characterized in that: include: Providing a mold, the mold comprising a flanged edge platform arranged along the outer edge; Laying the rear edge bonding corner, the rear edge bonding corner comprising an integrated first bonding corner portion and a second bonding corner portion, the first bonding corner portion being laid in contact with the inner surface of the mold, and the second bonding corner portion being laid on the flanging edge platform; Placing a mold clamping piece and an anti-movement prefabricated piece on the first bonding corner in sequence, wherein the anti-movement prefabricated piece includes a butt joint surface and a bonding corner pasting surface, the mold clamping piece includes a mold clamping piece inclined surface, and the butt joint surface is butted against the mold clamping piece inclined surface; Folding the second bonding corner portion and bonding it to the bonding corner bonding surface to form a mold-jointed component fixing structure; The mold-clamping fixing structure is utilized to form a wind turbine blade in subsequent processes.

2. The manufacturing method according to claim 1, characterized in that: The step of sequentially placing the mold closing part and the anti-movement prefabricated part on the first bonding corner comprises: Laying a mold closing component wrapping cloth on the trailing edge bonding corner, the mold closing component wrapping cloth comprising a first wrapping portion and a second wrapping portion, the first wrapping portion being laid on the first bonding corner portion, and the second wrapping portion being laid on the second bonding corner portion; Place the mold clamping part against the first wrapping part, and then fold the second wrapping part and stick it to the sticking surface of the second wrapping part of the mold clamping part. The mold clamping part wrapping cloth wraps the mold clamping part in a semi-enclosed structure, and the docking surface is butted against the oblique surface of the mold clamping part, wherein the chordal edges of the mold clamping part wrapping cloth are staggered.

3. The manufacturing method according to claim 2, characterized in that: The step of laying the mold assembly wrapping cloth on the trailing edge bonding angle comprises: Positioning the mold assembly according to the reference line of the trailing edge bonding angle; The mold assembly wrapping cloth is laid on the trailing edge bonding angle according to the reference line position.

4. The manufacturing method according to claim 1, characterized in that: The step of sequentially placing the mold closing member and the anti-movement prefabricated member on the first bonding corner comprises: The anti-movement prefabricated component is sealed with a non-porous film; The sealed anti-movement preformed part is placed close to the inner side of the mold after the continuous felt is pasted on the molded surface, and the butt joint surface is butted against the inclined surface of the mold clamping part.

5. The manufacturing method according to claim 1, characterized in that: The mold further comprises a plurality of flange positioning blocks arranged around the flange prism; the steps of using the mold clamping member fixing structure to form a wind turbine blade in a subsequent process include: Covering the upper surface of the mold clamping part fixing structure with a release cloth, a porous film, and an anti-caulking cloth; According to the position of the flanging positioning block, a bonding corner tooling is fixed on the upper surface of the mold clamping part fixing structure.

6. The manufacturing method according to claim 5, characterized in that: The step of using the mold assembly fixing structure to form a wind turbine blade in a subsequent process also includes: After the auxiliary materials and the exhaust system are arranged, the entire product area is vacuum sealed with a vacuum film; The product area is subjected to a vacuum negative pressure operation, and the product area is subjected to a pre-vacuum operation, and at the same time, the mold clamping part and the anti-movement preform are pushed toward the direction of the mold; After the mold is closed, the anti-movement preform is removed.

7. The manufacturing method according to claim 1, characterized in that: A first gap is maintained between the butt joint surface and the inclined surface of the mold clamping part, and the first gap is ≤ 2 mm; And or, a second gap is maintained between the mold clamping part and the mold, and the second gap is ≤5mm.

8. The manufacturing method according to claim 1, characterized in that: There are multiple mold clamping parts, and the anti-movement prefabricated parts correspond to the mold clamping parts at the edge of the mold. The chord-wise gap between every two mold clamping parts is ≤2mm.

9. The manufacturing method according to claim 1, characterized in that: The cross section of the anti-movement prefabricated part is the same as the cross section of the mold closing part, and the manufacturing method of the anti-movement prefabricated part is the same as the manufacturing method of the mold closing part; And / or, the anti-movement prefabricated component is made of polyvinyl chloride and / or polyethylene terephthalate.

10. The manufacturing method according to claim 1, characterized in that: The mold clamping part comprises a docking block with a mold clamping inclined surface and a main body block detachably connected to the docking block.

11. The manufacturing method according to claim 10, characterized in that: The butt joint block and the main body block are bonded by structural adhesive, and the thickness of the structural adhesive is 2 mm to 10 mm.

12. A wind turbine blade, characterized in that: The method is prepared by the method according to any one of claims 1 to 11.

13. A wind turbine generator set, characterized in that: It comprises the wind turbine blade as claimed in claim 12.

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