Forming method of trailing edge auxiliary beam, trailing edge auxiliary beam, blade and wind generating set

Abstract

The invention provides a forming method of a trailing edge auxiliary beam, the trailing edge auxiliary beam, a blade and a wind generating set. The forming method comprises the following steps: forming a plurality of pultrusion plates, wherein each pultrusion plate comprises reinforced fibers and thermoplastic resin; stacking the plurality of pultrusion plates in a mold for forming the trailing edge auxiliary beam, and inserting a flow guide fabric between the adjacent pultrusion plates to form a stacked body; the mold is heated to the temperature higher than the softening temperature of the thermoplastic resin, so that the laminated body is softened, and a shape-following laminated body which is in shape following with the mold is formed; and pouring resin into the random laminated body and curing the resin to form the trailing edge auxiliary beam. According to the forming method of the trailing edge auxiliary beam, the bearing performance of the trailing edge auxiliary beam can be improved, the weight of the blade is reduced, and the error-tolerant rate is increased.

Description

Technical Field

[0001] The invention relates to the technical field of wind power generation, and in particular to a forming method of a trailing edge auxiliary beam, a trailing edge auxiliary beam, a blade and a wind power generator set. Background Art

[0002] The wind turbine blade is the main structure of the wind turbine generator set. The wind turbine blade includes a shell forming the basic airfoil of the wind turbine blade, a main beam and a trailing edge auxiliary beam sandwiched in the shell, and a web supporting the main beam.

[0003] The trailing edge auxiliary beam and the main beam together constitute the main load-bearing structure of the blade, providing the blade with anti-bending and anti-torsion capabilities. The trailing edge auxiliary beam is set close to the trailing edge of the blade, with a relatively complex shape, and a certain curvature in both the span and chord directions.

[0004] The trailing edge auxiliary beam can be formed together with the half shell during the half shell molding of the blade or can be made into a prefabricated part. Since the shape of the trailing edge auxiliary beam is relatively special and has a certain curvature in both the chord direction and the span direction, whether the trailing edge auxiliary beam is formed into a prefabricated part or not, it is generally formed by vacuum infusion of resin after laying the fiber fabric layer.

[0005] However, when vacuum infusion resin molding is used, the load-bearing performance of the trailing edge auxiliary beam is low, the weight of the blade is increased, and the fault tolerance rate is low. Summary of the invention

[0006] An object of the present invention is to provide a method for forming a trailing edge auxiliary beam, a trailing edge auxiliary beam, a blade and a wind turbine generator set, which can improve the load-bearing performance of the trailing edge auxiliary beam, reduce the weight of the blade and improve the fault tolerance rate.

[0007] Another object of the present invention is to provide a method for forming a trailing edge auxiliary beam, a trailing edge auxiliary beam, a blade and a wind turbine generator set, which can improve the shape accuracy of the trailing edge auxiliary beam.

[0008] Another object of the present invention is to provide a method for forming a trailing edge auxiliary beam, a trailing edge auxiliary beam, a blade and a wind turbine generator set, which can improve the bonding strength between the trailing edge auxiliary beam and an adjacent structure.

[0009] According to one aspect of the present invention, there is provided a method for forming a trailing edge auxiliary beam of a blade, the method comprising: forming a plurality of pultruded plates, each of the pultruded plates comprising reinforcing fibers and a thermoplastic resin; stacking the plurality of pultruded plates in a mold for forming the trailing edge auxiliary beam and inserting a guide fabric between adjacent pultruded plates to form a laminate; heating the mold to a temperature higher than the softening temperature of the thermoplastic resin to soften the laminate to form a conformable laminate that conforms to the mold; and infusing the conformable laminate with resin and curing the resin to form the trailing edge auxiliary beam.

[0010] Optionally, in the step of forming the plurality of pultruded plates, inclined surfaces are formed at both ends in the chord direction of each of the pultruded plates, or a step region including a plurality of steps is formed.

[0011] Optionally, a first step region is formed at one of the two ends in the chord direction of each pultruded plate, and a second step region is formed at the other end in the chord direction of each pultruded plate, and at least two steps staggered from bottom to top toward the chord center of the pultruded plate are formed in the first step region, and at least two steps staggered from top to bottom toward the chord center of the pultruded plate are formed in the second step region. Alternatively, an inclined plane inclined from bottom to top toward the chord center of the pultruded plate is formed at one of the two ends in the chord direction of each pultruded plate, and an inclined plane inclined from top to bottom toward the chord center of the pultruded plate is formed at the other end in the chord direction of each pultruded plate.

[0012] Optionally, the number of steps formed in the first step region and the number of steps formed in the second step region are the same.

[0013] Optionally, the staggered width between adjacent steps of the plurality of steps is 2 mm-10 mm.

[0014] Optionally, the thickness of the central portion of each pultruded plate excluding the two ends in the chord direction is 3 mm-10 mm.

[0015] Optionally, in the step of forming the stacked body, the plurality of pultruded plates are staggered and stacked along a chord direction.

[0016] Optionally, each of the pultruded plates is a straight plate, and multiple pultruded plates have the same structure.

[0017] Optionally, the molding method further comprises: after forming a conformable laminate conforming to the mold and before infusing resin into the softened laminate and curing the resin, after cooling the mold, arranging a vacuum infusion system.

[0018] Optionally, in the step of forming the plurality of pultruded sheets, pre-curing is performed at a temperature of 140°C-180°C, and post-curing is performed at a temperature of 140°C-200°C.

[0019] According to another aspect of the present invention, there is provided a trailing edge auxiliary beam of a blade, wherein the trailing edge auxiliary beam is formed according to the trailing edge auxiliary beam forming method as described above.

[0020] According to another aspect of the present invention, there is provided a blade, comprising the trailing edge auxiliary beam as described above.

[0021] According to another aspect of the present invention, a wind turbine generator set is provided, wherein the wind turbine generator set comprises the blade as described above.

[0022] The method for forming the trailing edge auxiliary beam according to the present invention can improve the load-bearing performance of the trailing edge auxiliary beam, reduce the weight of the blade, and improve the fault tolerance rate.

[0023] The method for forming the rear edge auxiliary beam of the present invention can improve the shape accuracy of the rear edge auxiliary beam.

[0024] The forming method of the rear edge auxiliary beam according to the present invention can improve the bonding strength between the rear edge auxiliary beam and the adjacent structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The above and other objects, features and advantages of the present invention will become more apparent from the following detailed description in conjunction with the accompanying drawings, in which:

[0026] Figure 1 is a schematic diagram of a blade according to an embodiment of the present invention, wherein a trailing edge auxiliary beam on one side is shown;

[0027] Figure 2 yes Figure 1 The chord-wise cross-section of the blade in FIG.

[0028] Figure 3 is a flow chart of a method for forming a trailing edge auxiliary beam according to an embodiment of the present invention;

[0029] Figure 4 is a schematic diagram of a pultrusion apparatus for forming a pultruded plate according to an embodiment of the present invention;

[0030] Figure 5 yes Figure 4 The main view;

[0031] Figure 6 is along Figure 4 The cross-sectional view taken along line AA in FIG.

[0032] Figure 7 is a chord-wise cross-sectional view of a pultruded plate according to an embodiment of the present invention;

[0033] Figure 8 is a schematic diagram of stacking a plurality of pultruded plates to form a laminate according to an embodiment of the present invention;

[0034] Fig. 9 Schematic diagram of a trailing edge auxiliary beam according to an embodiment of the present invention.

[0035] Explanation of the symbols in the drawings: 100-blade, 110-shell, 120-main beam, 130-web, 140-trailing edge auxiliary beam, 10-pultruded plate, 11-first step area, 11a-step, 12-second step area, 12a-step, 13-central part, 20-guide fabric, 30-laminated body, 1-threading plate, 2 and 3-cold mold, 4-molding mold, 4a-mold cavity. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0038] Figure 1 is a schematic diagram of a blade according to an embodiment of the present invention, wherein a trailing edge auxiliary beam on one side is shown; Figure 2 yes Figure 1 Chord-wise cross section of the blade.

[0039] like Figure 1 and Figure 2 As shown, the blade 100 includes a shell 110 forming a basic airfoil of the blade, a main beam 120 and a trailing edge auxiliary beam 140 sandwiched in the shell 110, and a web 130 supporting the main beam 120. The main beam 120 and the trailing edge auxiliary beam 140 are arranged in the upper and lower shells of the shell 110. The trailing edge auxiliary beam 140 is arranged close to the trailing edge of the blade 100, and together with the main beam 120, constitutes the main load-bearing structure of the blade.

[0040] like Figure 1 and Figure 2 As shown, the trailing edge auxiliary beam 140 has a certain curvature in the span direction and the chord direction, and the shape is relatively complex. At present, it is generally formed into a prefabricated part by vacuum infusion resin after laying the fiber fabric layer or formed together when forming the half shell of the blade. However, the use of vacuum infusion resin molding has low load-bearing performance of the trailing edge auxiliary beam, increased blade weight and high fault tolerance.

[0041] The present invention provides a method for forming a trailing edge auxiliary beam that can improve the load-bearing performance of the trailing edge auxiliary beam, reduce the weight and fault tolerance of the blade. In the following, the span direction of the trailing edge auxiliary beam 140 corresponds to the span direction of the blade 100, and also corresponds to the length direction of the trailing edge auxiliary beam 140; the chord direction of the trailing edge auxiliary beam 140 corresponds to the chord direction of the blade 100, and also corresponds to the width direction of the trailing edge auxiliary beam 140. In addition, the span-wise cross section of the trailing edge auxiliary beam 140 is a cross section cut along the span direction, and the chord-wise cross section of the trailing edge auxiliary beam 140 is a cross section cut along the chord direction.

[0042] Figure 3FIG. 1 is a flow chart of a method for forming a rear edge auxiliary beam according to an embodiment of the present invention. Figure 3 As shown, the method for forming the trailing edge auxiliary beam of a blade according to an embodiment of the present invention may include: forming a plurality of pultruded plates 10, each pultruded plate 10 including reinforcing fibers and a thermoplastic resin (S1); stacking the plurality of pultruded plates 10 in a mold for forming the trailing edge auxiliary beam and inserting a guide fabric 20 between adjacent pultruded plates 10 to form a laminate 30 (S2); heating the mold to a temperature higher than the softening temperature of the thermoplastic resin to soften the laminate 30 to form a conformable laminate that conforms to the mold (S3); and infusing the conformable laminate with resin and curing the resin to form the trailing edge auxiliary beam 140 (S4).

[0043] According to an embodiment of the present invention, by using a pultruded plate to form the trailing edge auxiliary beam 140, the load-bearing performance of the trailing edge auxiliary beam can be improved, the weight of the blade can be reduced, and the fault tolerance rate can be improved. The fiber and resin content in the pultruded plate is easy to control, and the fiber content is higher than the fiber content of vacuum infusion. The higher the fiber content, the better the mechanical properties or load-bearing state. In addition, since the fiber content in the pultruded plate is high, the resin content is low, and the mechanical properties are relatively excellent. The mechanical properties can be guaranteed by using less material, which is conducive to reducing the weight of the blade. In addition, if the trailing edge auxiliary beam is produced by vacuum infusing resin after all the layers are laid, when a defect occurs in a certain place, the trailing edge auxiliary beam will be scrapped as a whole. If a pultruded plate is used to produce the trailing edge auxiliary beam, if a problem or defect occurs on a certain pultruded plate during the production process, this pultruded plate can be scrapped and replaced with a new pultruded plate. In other words, even if a problem is found in a certain pultruded plate during the process of stacking pultruded plates to form a stack, it is sufficient to replace the problematic pultruded plate without affecting other pultruded plates. Therefore, the fault tolerance rate can be improved by forming the trailing edge auxiliary beam 140 using a pultruded plate.

[0044] In addition, according to an embodiment of the present invention, a pultruded plate is formed by using a thermoplastic resin, and the characteristic of the thermoplastic resin that it will conform to the shape during the heating process is utilized. The laminate is heated to conform to the shape, and then the resin is injected to bond the laminate as a whole to form a rear edge auxiliary beam, thereby effectively improving the shape accuracy of the rear edge auxiliary beam and solving the problem of conforming to the shape of the rear edge auxiliary beam. In addition, because the pultruded plate is formed by using a thermoplastic resin, the scrapped material can be recycled and reused later, and the rear edge auxiliary beam made of the pultruded plate can also be recycled and reused. Below, each step of forming the rear edge auxiliary beam will be described in detail.

[0045] In step S1, a plurality of pultruded plates 10 are formed, each of which may include reinforcing fibers and thermoplastic resins. As an example, the thermoplastic resin may include at least one of polypropylene (PP), polyethylene terephthalate (PET), nylon 6 (PA6), nylon 66 (PA66), acrylonitrile-styrene-acrylate copolymer (ASA), polyphenylene oxide (PPO), polyimide (PI), and polyetheretherketone (PEEK). As an example, the reinforcing fibers may include at least one of glass fibers, basalt fibers, aramid fibers, carbon fibers, and synthetic fibers.

[0046] As an example, each pultruded plate 10 may be a straight plate. According to the present invention, even if the pultruded plate 10 is formed into a straight plate, the laminate can be conformed by subsequent heating to ensure the shape accuracy of the trailing edge auxiliary beam.

[0047] In the step of forming a plurality of pultruded plates 10, a step region including a plurality of steps is formed at both ends in the chord direction of each pultruded plate 10. According to the present invention, by forming a step region including a plurality of steps at both ends in the chord direction of the pultruded plate, the bonding area between the trailing edge auxiliary beam and the adjacent structure (for example, the shell structure of the blade) can be increased, thereby facilitating the improvement of the bonding strength between the trailing edge auxiliary beam and the adjacent structure.

[0048] like Figure 7 As shown, a first step region 11 may be formed at one of the two ends of each pultruded plate 10 in the chord direction, and a second step region 12 may be formed at the other end of each pultruded plate 10 in the chord direction. In the first step region 11, at least two steps 11a are formed from bottom to top toward the chord center of the pultruded plate 10, and in the second step region 12, at least two steps 12a are formed from top to bottom toward the chord center of the pultruded plate 10. As an example, three, four or more steps 11a may be formed in the first step region 11. As an example, three, four or more steps 12a may be formed in the second step region 12. The number of steps 11a and 12a is not specifically limited. As an example, the number of steps formed in the first step region 11 and the second step region 12 may be the same. However, the number of steps formed in the first step region 11 and the second step region 12 may also be different. As an example, the staggered width of adjacent steps of the plurality of steps is 2mm-10mm.

[0049] Although not shown, an inclined surface may also be formed at both ends of the chord direction of each pultruded plate 10. According to the present invention, by forming an inclined surface at both ends of the chord direction of the pultruded plate, the bonding area between the trailing edge auxiliary beam and the adjacent structure (for example, the shell structure of the blade) may also be increased, which is beneficial to improving the bonding strength between the trailing edge auxiliary beam and the adjacent structure. As an example, an inclined surface inclined from bottom to top toward the chord center of the pultruded plate 10 is formed at one end of the two ends of the chord direction of each pultruded plate 10, and an inclined surface inclined from top to bottom toward the chord center of the pultruded plate 10 is formed at the other end of the two ends of the chord direction of each pultruded plate 10.

[0050] As an example, the thickness of the central portion 13 of each pultruded plate 10, except for the two ends in the chord direction, is 3 mm to 10 mm. However, the present invention is not limited thereto, but the thickness of the central portion 13 of the pultruded plate 10 can be determined according to specific pultrusion process requirements. The chord length and span length of each pultruded plate 10 are not specifically limited, but can be determined according to the size and model of the blade, etc.

[0051] As an example, multiple pultruded panels 10 can be pultruded using the same pultrusion die, thus saving die costs. As an example, the pultruded panels 10 can have the same structure, for example, the span length and chord length of the multiple pultruded panels 10 can be the same as each other.

[0052] As an example, you can use Figures 4 to 6 The pultrusion equipment shown in FIG. Figure 7 The pultruded plate shown in FIG. Figure 4 is a schematic diagram of a pultrusion apparatus for forming a pultruded plate according to an embodiment of the present invention;

[0053] Figure 5 yes Figure 4 The main view; Figure 6 is along Figure 4 The cross-sectional view taken along line AA in FIG. Figure 7 is a chord-wise cross-sectional view of a pultruded plate according to an embodiment of the present invention.

[0054] like Figure 4 As shown, the pultrusion equipment may include a threading plate 1, cold molds 2 and 3, and a forming mold 4. After passing through the dipping tank, the reinforcing fiber may sequentially pass through the threading plate 1 and the cold molds 2 and 3 for glue extrusion, and then enter the forming mold 4 for forming. Figure 5 The shape of the longitudinal cross section of the mold cavity 4a of the molding mold 4 is shown. Figure 6 The shape of the cross section of the mold cavity 4a in the width direction is shown.

[0055] like Figure 5 As shown, the mold cavity 4a is in the shape of a flat plate. Figure 6 As shown, the two ends of the width direction cross section of the mold cavity 4a form step areas. Figure 5 and Figure 6 The pultruded plate formed by pultrusion of the mold cavity 4a shown in FIG. Figure 7 The straight pultruded plate with stepped areas at both ends of the chord direction shown in FIG. It should be understood that when the pultruded plate has inclined surfaces (such as Figure 7 When Figure 6 The mold cavity 4a shown in the figure will also change accordingly, that is, both ends of the width direction cross section of the mold cavity 4a will also form corresponding inclined surfaces.

[0056] The specific structure of the pultrusion equipment and the specific pultrusion process for producing the pultruded plate are not limited, and any pultrusion equipment and pultrusion process known in the art that can produce the above-mentioned pultruded plate can be applied. As an example, the reinforcing fiber after dipping can be pre-cured and cured in the forming mold 4 in sequence. As an example, the pre-curing can be performed at a temperature of 140°C-180°C, and the post-curing can be performed at a temperature of 140°C-200°C, and the pre-curing temperature and the post-curing temperature can be adjusted according to different resins.

[0057] In step S2, a plurality of pultruded plates 10 may be stacked in a mold for forming a trailing edge auxiliary beam and a guide fabric 20 may be inserted between adjacent pultruded plates 10 to form a laminated body 30. As an example, a plurality of pultruded plates 10 may be stacked in staggered layers along the chord direction, such as Figure 8 As shown. The number of pultruded sheets 10 in the laminate 30 is not specifically limited, and the pultruded sheets 10 can be stacked until the thickness requirement is met. The guide fabric 20 can be used to bond adjacent pultruded sheets 10 together after the resin is poured. As an example, the guide fabric 20 may include at least one of glass fiber, basalt fiber, aramid fiber, carbon fiber, and synthetic fiber. As an example, the guide fabric may be a 200 / 300 g / m 2 Biaxial fabric and / or weight 200 / 300g / m 2 plaid.

[0058] In step S3, the mold may be heated to a temperature higher than the softening temperature of the thermoplastic resin to soften the laminate 30 and form a laminate conforming to the mold. As an example, the mold may be heated to above 130°C (e.g., above 150°C) and then kept warm until the laminate 30 softens and conforms to the mold. The heating temperature of the mold may vary depending on the specific material of the thermoplastic resin, and the present invention does not impose any specific restrictions on this, as long as the laminate 30 can be softened. In addition, the insulation time is not specifically limited, as long as the laminate 30 can be softened.

[0059] In step S4, resin is poured into the conformable laminate and cured to form the trailing edge auxiliary beam 140. For example, the resin can be poured into the conformable laminate by a vacuum-assisted pouring system. Specifically, after forming the conformable laminate conforming to the mold, the mold can be cooled to, for example, room temperature, and then the vacuum pouring system can be arranged. Vacuum auxiliary materials can be laid on the conformable laminate. For example, the vacuum auxiliary materials can include a demoulding cloth, an isolation film, a guide net, a glue injection tube, an exhaust tube, and a vacuum bag film.

[0060] A vacuum-assisted infusion system may be used to infuse resin into the conformable laminate under vacuum conditions. As an example, the resin may be a thermosetting resin or a thermoplastic resin, and the present invention does not specifically limit this. For example, the infusion resin may be an epoxy resin. When the infusion resin is an epoxy resin, the temperature may be maintained at 40°C-50°C for 5 hours to 7 hours, and then the temperature may be increased to 70°C-80°C for 5 hours to 7 hours.

[0061] Fig. 9 Schematic diagram of the trailing edge auxiliary beam according to an embodiment of the present invention. Fig. 9 As shown, the chord-wise cross section of the trailing edge auxiliary beam 140 may be formed into a trapezoidal shape. This is because, in step S3, Figure 8 The laminate 30 shown in FIG. 1 softens and conforms to the mold during heating, for example, Figure 8 The right end of the laminate 30 in the mold softens and bends downward to fit the mold, thereby forming a Fig. 9 Trailing edge auxiliary beam in chord-wise section shown in .

[0062] According to an embodiment of the present invention, a blade including the above-mentioned trailing edge auxiliary beam can also be provided. The blade according to an embodiment of the present invention can have the following Figure 1 and Figure 2 For example, the blade 100 may include a shell 110 , a main beam 120 and a web 130 in addition to the trailing edge auxiliary beam 140 .

[0063] According to an embodiment of the present invention, a wind turbine generator set including the above blade may also be provided.

[0064] The method for forming the rear edge auxiliary beam according to the embodiment of the present invention can achieve beneficial technical effects not limited to the following description.

[0065] The method for forming the trailing edge auxiliary beam according to the present invention can improve the load-bearing performance of the trailing edge auxiliary beam, reduce the weight of the blade, and improve the fault tolerance rate.

[0066] The method for forming the rear edge auxiliary beam of the present invention can improve the shape accuracy of the rear edge auxiliary beam.

[0067] The forming method of the rear edge auxiliary beam according to the present invention can improve the bonding strength between the rear edge auxiliary beam and the adjacent structure.

[0068] While exemplary embodiments of the present invention have been described in detail with reference to exemplary embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the claims.

Claims

1. A method for forming a trailing edge auxiliary beam of a blade, characterized in that: The molding method comprises: forming a plurality of pultruded sheets (10), each of the pultruded sheets (10) comprising reinforcing fibers and a thermoplastic resin; Stacking the plurality of pultruded plates (10) in a mold for forming the trailing edge auxiliary beam and inserting a flow guide fabric (20) between adjacent pultruded plates (10) to form a stacked body (30); The mold is heated to a temperature higher than the softening temperature of the thermoplastic resin to soften the laminate (30) and form a laminate that conforms to the mold; Resin is poured into the conformal laminate and cured to form the trailing edge auxiliary beam (140).

2. The molding method according to claim 1, characterized in that: In the step of forming the plurality of pultruded plates (10), inclined surfaces are formed at both ends in the chord direction of each of the pultruded plates (10), or a step region including a plurality of steps is formed.

3. The molding method according to claim 2, characterized in that: A first step region (11) is formed at one of the two ends in the chord direction of each pultruded plate (10), and a second step region (12) is formed at the other end in the chord direction of each pultruded plate (10), and at least two steps (11a) are formed in the first step region (11) from bottom to top toward the chord center of the pultruded plate (10), and at least two steps (12a) are formed in the second step region (12) from top to bottom toward the chord center of the pultruded plate (10), or An inclined surface is formed at one of the two ends in the chord direction of each pultruded plate (10), and an inclined surface is formed at the other end in the chord direction of each pultruded plate (10), and is inclined from top to bottom toward the chord center of the pultruded plate (10).

4. The molding method according to claim 3, characterized in that: The number of steps formed in the first step region (11) and the second step region (12) is the same.

5. The molding method according to claim 2, characterized in that: The staggered width between adjacent steps of the plurality of steps is 2 mm to 10 mm.

6. The molding method according to claim 2, characterized in that: The thickness of the central portion (13) of each pultruded plate (10) except the two ends in the chord direction is 3mm-10mm.

7. The molding method according to claim 1, characterized in that: In the step of forming the stacked body (30), the plurality of pultruded plates (10) are stacked in staggered layers along the chord direction.

8. The molding method according to claim 1, characterized in that: Each of the pultruded plates (10) is a straight plate, and a plurality of pultruded plates (10) have the same structure.

9. The molding method according to claim 1, characterized in that: The molding method further comprises: after forming a conformable laminated body conforming to the mold and before infusing resin into the softened laminated body (30) and curing the resin, after cooling the mold, arranging a vacuum infusion system.

10. The molding method according to claim 1, characterized in that: In the step of forming the plurality of pultruded sheets (10), pre-curing is performed at a temperature of 140°C-180°C, and post-curing is performed at a temperature of 140°C-200°C.

11. A trailing edge auxiliary beam of a blade, characterized in that: The trailing edge auxiliary beam (140) is formed according to the trailing edge auxiliary beam forming method according to any one of claims 1 to 10.

12. A blade, characterized in that: The blade (100) comprises the trailing edge beam according to claim 11.

13. A wind turbine generator set, characterized in that: The wind turbine generator set comprises the blade according to claim 12 .

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