Blade web, blade web manufacturing method, blade and wind generating set

Abstract

The invention provides a blade web, a blade web forming method, a blade and a wind generating set. The blade web plate comprises a web plate panel and a flange located at the end of the web plate panel. The web plate panel comprises a web plate core material, a first skin including a plurality of first layouts laid on a first side of the web core and having a first layout extension extending beyond an end of the web core; the second skin comprises a plurality of second laying layers which are laid on the second side of the web core material, and the first side is opposite to the second side; and one part of the multiple layers of first paving layer extension parts is folded to the second side of the web core material at the end part of the web core material, is overlapped with the multiple layers of second paving layers and is positioned between the multiple layers of second paving layers and the web core material.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of wind power generation, and more particularly, to a blade web, a blade web manufacturing method, a blade, and a wind turbine generator system. BACKGROUND

[0002] The blade of the wind turbine generator system includes a pressure surface shell and a suction surface shell, and a web connected between the pressure surface shell and the suction surface shell. The web plays a supporting role in the blade cavity and bears the main load of the blade during movement. The effectiveness of the web structure plays a decisive role in the safety of the blade.

[0003] The web includes a web main body and a flange at both ends of the web main body, which is bonded to the inner surface of the blade shell. The commonly used flange structure is a C-shaped flange and a T-shaped flange. However, during the deformation of the blade, the upper and lower shells of the blade deform inconsistently due to the difference in shape, causing the web to generate tensile peeling load, which leads to the problem of adhesive cracking of the C-shaped flange. Although the T-shaped flange can significantly improve the effect, the flange still has the problems of whitening or end face core material cracking failure when subjected to tensile load and bending load due to the complex structure of the web end face. SUMMARY

[0004] The present application provides a blade web, a blade web manufacturing method, a blade, and a wind turbine generator system to solve the problem of connection failure between the blade web and the blade in the prior art.

[0005] According to an aspect of the present application, a blade web is provided, which includes a web panel and a flange at the end of the web panel, the web panel including: a web core; a first ply including a plurality of layers of first ply laid on a first side of the web core and having a first ply extension extending beyond the end of the web core; and a second ply including a plurality of layers of second ply laid on a second side of the web core, the first side and the second side being opposite; wherein a portion of the plurality of layers of first ply extension is folded at the end of the web core to the second side of the web core, stacked with the plurality of layers of second ply, and located between the plurality of layers of second ply and the web core.

[0006] According to an aspect of the present application, the flange includes a main flange on one side of the web panel, the plurality of layers of first ply has a second ply extension extending beyond the end of the web core, and another portion of the plurality of layers of first ply extension is folded at a predetermined angle with respect to the end of the web core and stacked with the second ply extension, thereby forming the main flange.

[0007] According to an aspect of the present application, the flange further comprises a secondary flange located on the other side of the web panel, the secondary web flange is integrally formed with the web panel and the main flange by a vacuum infusion process.

[0008] According to an aspect of the present application, the blade web further comprises a secondary flange reinforcement structure, the secondary flange reinforcement structure is arranged on the secondary flange and extends beyond the secondary flange to overlap the first ply.

[0009] According to an aspect of the present application, the secondary flange reinforcement structure is a preform or a hand lay-up ply, the hand lay-up ply comprises at least two plies.

[0010] According to an aspect of the present application, the R corner radius of the secondary flange is greater than or equal to 10mm.

[0011] According to another aspect of the present application, a detection hole is formed on the web panel, the detection hole penetrates the web panel.

[0012] According to another aspect of the present application, the detection hole has a chamfer structure, the chamfer area of the detection hole is covered by the second ply.

[0013] According to another aspect of the present application, the detection hole further comprises a platform area connected with the chamfer area, the first ply and the second ply are overlapped and combined with each other in the platform area.

[0014] According to another aspect of the present application, a blade web forming method is provided, the blade web forming method uses a blade web forming mold, the blade web forming mold comprises a support base, a boss arranged on the support base, a flange baffle located at both ends of the boss, and a mold strip arranged at both ends of the boss, the blade web forming method comprises the following steps: laying a secondary flange ply on the flange baffle, and placing a mold strip between the boss and the flange baffle, fixing the lower end of the secondary flange ply, and bending the upper end of the secondary flange ply towards the boss to be arranged on the boss; laying a plurality of first plies on the boss, and covering the first plies to the flange baffle; placing a web core material on the plurality of first plies; folding a part of the plurality of first plies to the upper surface of the web core material; laying a plurality of second plies on the web core material; vacuum infusion forming to obtain a blade web.

[0015] According to another aspect of the present application, the method further comprises: arranging a secondary flange reinforcement structure at the secondary flange, the secondary flange reinforcement structure is a preform or a hand lay-up ply, the hand lay-up ply comprises at least two plies.

[0016] According to another aspect of the present application, the core web is provided with an open hole structure having a chamfer, the first and second plies respectively cover both sides of the open hole structure, and the blade web forming method further comprises: after the blade web is cured and formed, a through hole is formed at the position corresponding to the open hole structure, and a platform area is reserved at the outer periphery of the through hole.

[0017] According to yet another aspect of the present application, a blade for a wind turbine generator is provided, the blade for a wind turbine generator comprising a blade shell and a blade web as described above, the blade web being in the blade shell.

[0018] According to yet another aspect of the present application, a wind turbine generator is provided, the wind turbine generator comprising a blade for a wind turbine generator as described above. BRIEF DESCRIPTION OF DRAWINGS

[0019] The above and other objects and features of the present application will become more apparent from the following description of embodiments taken in conjunction with the accompanying drawings, in which:

[0020] Figure 1 is a partial structural schematic diagram of a blade web according to an embodiment of the present application;

[0021] Figure 2 is a structural schematic diagram of a blade web forming mold according to an embodiment of the present application;

[0022] Figure 3 is a process schematic diagram of a blade web forming process according to an embodiment of the present application;

[0023] Figure 4 is a structural schematic diagram of a web core according to an embodiment of the present application;

[0024] Figure 5 is a flowchart of a blade web forming method according to an embodiment of the present application;

[0025] Figure 6 is a schematic diagram of a blade web provided with a secondary flanging reinforcing structure;

[0026] Figure 7 is a schematic diagram of a blade web according to another embodiment of the present application;

[0027] Figure 8 is a partial enlarged view of a detection hole according to another embodiment of the present application;

[0028] Figure 9 is a forming process schematic diagram of a blade web according to another embodiment of the present application. DETAILED DESCRIPTION

[0029] The following detailed description is presented to aid the reader in gaining a comprehensive understanding of the methods, apparatuses, and / or systems described herein. However, various changes, modifications, and equivalents can be used, and thus particular embodiments described herein are not intended as being limiting as there are many different ways to implement the methods, apparatuses, and / or systems described herein. For example, the order in which operations are described is not intended to be limiting unless otherwise specified. Moreover, descriptions of features in terms of being performed in serial order are not intended to be limiting as parallel or some other order can be performed instead.

[0030] The features described herein can be implemented in different ways depending upon the particular application. Rather than be bound by the examples described herein, the examples described herein are provided to illustrate some of the many possible ways in which the methods, apparatuses, and / or systems described herein can be implemented.

[0031] As used herein, the term “and / or” includes any one of the associated listed items, as well as any combination of any two or more of the associated listed items.

[0032] Although terms such as “first,” “second,” and “third” can be used herein to describe various elements, components, regions, layers, or sections, these elements, components, regions, layers, or sections should not be limited by these terms. Rather, these terms are only used to distinguish one element, component, region, layer, or section from another element, component, region, layer, or section. Thus, a first element, component, region, layer, or section referred to in the examples described herein can also be referred to as a second element, component, region, layer, or section without departing from the teachings of the examples.

[0033] In the description, when an element such as a layer, a region, or a substrate is referred to as being “on” another element, “connected to” or “coupled to” another element, it can be directly on, directly connected to, or directly coupled to the other element, or one or more other elements can be interposed therebetween. In contrast, when an element is referred to as being “directly on,” “directly connected to,” or “directly coupled to” another element, there are no other elements interposed therebetween.

[0034] The terminology used herein is for the purpose of describing various examples only and is not intended to limit disclosure. Unless the context clearly indicates otherwise, the singular form is intended to include the plural form as well. The terms “comprising,” “including,” and “having” indicate the presence of the described features, quantities, operations, components, elements, and / or combinations thereof, but do not preclude the presence or addition of one or more other features, quantities, operations, components, elements, and / or combinations thereof. The term “a plurality” represents any quantity of two or more.

[0035] The directional terms “above,” “below,” “top,” and “bottom” used in this application, unless otherwise specified, are based on the orientation of the product when it is in normal use.

[0036] Unless otherwise defined, all terms used herein, including technical and scientific terms, shall have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains upon understanding the invention. Unless expressly defined herein, terms such as those defined in a general dictionary shall be interpreted as having a meaning consistent with their meaning in the context of the relevant field and in this invention, and shall not be interpreted in an idealized or overly formalistic manner.

[0037] This application provides a blade web and a method for manufacturing the same, which will be described in detail below with reference to the accompanying drawings.

[0038] Figure 1 This is a schematic diagram of the blade web structure according to an embodiment of this application. Figure 1 As shown, the blade web according to an embodiment of this application includes a web panel 110 and flanges 120 located at both ends of the web panel 110 in the width direction.

[0039] The web panel 110 includes a web core material 111, a first ply laid on the lower surface (first side) of the web core material 111, and a second ply laid on the upper surface (second side) of the web core material 111. The first skin includes multiple first plies 112, which are laid across the entire lower surface of the web core material 111 and extend beyond the end face of the web core material 111. The portion of the first ply 112 extending beyond the end of the web core material 111 is referred to as the first ply extension. The second skin includes multiple second plies 113, a portion of which is folded over at the end of the web core material 111 to the upper surface of the web core material 111, overlapping with the multiple second plies 113, and located between the multiple second plies 113 and the web core material 111. As an example, the first ply 112 and the second ply 113 can be fiberglass cloth layers.

[0040] According to one aspect of this application, at least one first ply of the multi-layer first ply 112, whose extension is close to the web core material 111, is bent upward and stacked on the web core material 111. For example, if the multi-layer first ply 112 is configured with 5 layers, the ends of the two inner first ply layers 112 closest to the web core material 111 are bent and stacked on the web core material 111 to form a folded portion, and the remaining 3 first ply layers are configured in a conventional manner.

[0041] According to the blade web of this application, the edge of the first ply 112 is folded over to the other side of the web core material 111 and formed into an integral structure with the second ply 113 through vacuum infusion, thereby achieving a strengthening effect on the end face of the web. The blade web is connected to the blade shell through a flange 120 located at the end face. In the case of blade torsional deformation, shear force is generated between the blade shell and the web flange 120, and the shear force is transmitted to the entire web through the end face of the web. Because the first ply 112, the second ply 113 and the web core material 111 at the end face of the blade web according to the embodiment of this application are combined into a whole, a uniform load-bearing effect can be achieved, reducing the probability of web end face failure.

[0042] According to one aspect of this application, the flange 120 is a T-shaped flange structure, including a main flange 121 and an auxiliary flange 122 located on opposite sides of the web panel 110. The main flange 121 and the auxiliary flange 122 form a T-shaped structure with the web panel 110. The T-shaped flange 120 constitutes the end face of the blade web and is used for bonding to the inner surface of the blade shell. This application optimizes the auxiliary flange and layup of the web to form a double T-shaped structure with uniform load-bearing capacity on the end face of the web, further reducing the risk of failure and damage caused by uneven load on the blade.

[0043] Multiple second ply 113 are laid on the entire web core 111 and extend beyond the end of the web core 111. The portion extending beyond the end of the web core 111 is called the second ply extension. A portion of the multiple first ply extension is folded onto the upper surface of the web core 111, while another portion is bent at a predetermined angle relative to the end of the web core 111 and overlapped with it to form the main flange 121. Figure 4 A schematic diagram of the structure of the web core material 111 according to an embodiment of this application is shown. Figure 4 The web core material 111 has a C-shaped recess at its end. A portion of the extension of the multilayer first layup 112 is covered on the upper surface of the web core material 111 by a bent needle, so that both sides of the upper surface of the C-shaped recess are wrapped with cloth layers. After vacuum injection molding, the bonding area and bonding strength between the resin and the cloth layers can be further strengthened, thereby improving the structural strength of the web core material.

[0044] The auxiliary flange 122 comprises multiple auxiliary flange layups, integrally formed with the multiple first layups 112 via vacuum injection. According to another aspect of this application, as... Figure 1 As shown, the blade web also includes an auxiliary flange reinforcement structure 123. As an example, the auxiliary flange reinforcement structure 123 may include at least two hand lay-up layers. The radius of the radius of the auxiliary flange is increased by scraping a radius-reduction (R-angle) onto the integrally cast auxiliary flange. The hand lay-up layers are then placed on the outer surface of the auxiliary flange and overlap with the first lay-up layer 112, enhancing the bond strength between the auxiliary flange reinforcement structure 123 and the web panel. As an example, the hand lay-up layers are fiberglass lay-ups. Alternatively, the auxiliary flange reinforcement structure 123 may be a prefabricated component, adhered to the corner of the auxiliary flange 122 using adhesive.

[0045] By applying a coating to the R-corner, the radius of the R-corner can be increased, effectively strengthening the R-corner of the auxiliary flange and reducing the whitening of the flange caused by stress concentration due to an excessively small R-corner radius. Further strengthening the structure by adding an auxiliary flange reinforcement structure 123 can further enhance the structural strength.

[0046] Figure 2 It is a blade web forming mold according to an embodiment of the present application, used to manufacture the blade web according to an embodiment of the present application.

[0047] As shown in Figure 2, the blade web forming mold according to an embodiment of this application includes a supporting base plate 210, a boss 220 disposed on the supporting base plate 210, flange baffles 230 located at both ends of the boss 220, and mold strips 240 for being disposed at both ends of the boss 220. The mold strips 240 are typically made of silicone. The boss 220 protrudes a certain height relative to the supporting base plate 210 to support the blade web. The two flange baffles 230 are located on the supporting base plate 210, extending upward relative to the supporting base plate 210, and the angle between them and the supporting base plate 210 depends on the shape of the web. Typically, the included angle between the flange baffles 230 and the supporting base plate 210 is greater than 90° and less than 150°. The two flange baffles 230 are respectively located on both sides of the boss 220 and spaced a predetermined distance from the boss 220, thereby forming a groove 250 between them. The mold strips 240 are placed in the groove 250. The mold strip 240 is soft and its height is basically the same as that of the boss 220.

[0048] Figure 3 A schematic diagram is shown illustrating the manufacturing of blade webs using a web forming mold. (For example...) Figure 3 As shown, when the mold strip 240 is placed in the groove 250, the mold strip 240 is placed close to the boss 220, thereby forming a gap with the flange baffle 230 for fixing and laying the ply of the auxiliary flange 122.

[0049] Figure 5A flowchart of a blade web manufacturing method according to an embodiment of this application is shown. Below, in conjunction with… Figure 3 and Figure 5 A method for manufacturing a blade web according to an embodiment of this application will be described in detail.

[0050] In step S310, the ply of the auxiliary flange 122 is laid. Specifically, the ply of the auxiliary flange 122 is first laid on the flange baffle 230, and then the mold strip 240 is placed in the groove 250, thus fixing the auxiliary flange ply between the mold strip 240 and the flange baffle 230. Then, the ply of the auxiliary flange 122 is bent toward the boss 220, thereby overlapping the upper surface of the mold strip 240 and the upper surface of the boss 220. This ensures that the auxiliary flange ply overlaps with the subsequently laid first ply 112, thus combining them together.

[0051] In step S320, the first ply 112 is laid. The first ply 112 is laid along the starting position of the height of the flange 230 until the entire boss 220 and flange 230 are covered. That is, in addition to covering the boss 220 and the die strip 240, the first ply 112 also has a first ply extension that can cover the flange 230.

[0052] In step S330, the web core material 111 is laid. The web core material 111 is placed flat on the boss 220 and placed on the first layup 112.

[0053] In step S340, the first ply extensions are bent. A portion of the first ply extensions is bent over the web core material 111. For example, if there are 5 first ply layers 112, 2 of the first ply extensions are bent over the web core material 111 to form a bent ply. The remaining 3 fabric layers are then laid on the flange baffle 230 in a conventional manner.

[0054] In step S350, the second ply 113 is laid. It is laid along the edge of the flange 230 until the entire boss 220 and flange 230 are covered. At the position corresponding to the web core material 111, the second ply 113 is stacked with the bent ply.

[0055] In step S360, vacuum infusion molding is performed. After the second layup 113 is laid, vacuum infusion auxiliary materials are laid on the second layup 113, and resin is infused using a vacuum infusion process. After the resin is cured, the blade web according to the embodiment of this application is obtained.

[0056] The embodiments of this application do not limit the number of layers of the auxiliary flange and the web. The layering can be optimized through actual web design to achieve a uniform layering structure on both sides of the main flange and the auxiliary flange, ensuring uniform load-bearing on the web end face.

[0057] According to the embodiments of this application, by improving the web ply of the blade, the first web ply 112 and the second web ply 113 are integrated with the web core material 111 at the web face plate 110 position, so that the web end face can bear the load evenly when the blade is under load, thereby solving the problem of whitening of the web end face or cracking of the core material.

[0058] According to an embodiment of this application, the method further includes step S380, which involves setting an auxiliary flange reinforcement structure 123. In step S370, as... Figure 6 As shown, structural adhesive can be applied to the radius of the auxiliary flange by first increasing the radius of the radius by applying structural adhesive to the rounded corner. Then, at least two layers of fabric (e.g., fiberglass lay-up) can be hand-laid onto the auxiliary flange position using a hand lay-up process, overlapping with the first lay-up 112. The auxiliary flange reinforcement structure 123 can also be prefabricated, with the prefabricated reinforcement structure bonded to the auxiliary flange 122 as a single unit.

[0059] Specifically, after vacuum casting of the blade web, structural adhesive is applied to the radius (R) of the auxiliary flange to increase the chamfer radius, making R ≥ 5mm, and further, R ≥ 10mm. Then, an auxiliary flange reinforcement structure 123 is installed at the auxiliary flange position. The auxiliary flange reinforcement structure 123 can be installed using a hand lay-up process, where at least two layers (e.g., fiberglass lay-up) are hand-laid onto the auxiliary flange position, overlapping with the first lay-up 112 of the web. Alternatively, the auxiliary flange reinforcement structure 123 can be prefabricated, where the prefabricated auxiliary flange reinforcement structure 123 is bonded to the auxiliary flange 122 as a single unit.

[0060] By using the auxiliary flange reinforcement structure 123, the R-angle position of the auxiliary flange of the web plate is effectively strengthened, and the R-angle radius is increased, reducing the whitening of the flange caused by stress concentration due to the small R-angle radius.

[0061] The web with T-shaped flanges according to the embodiments of this application has the following advantages: the main flange, the auxiliary flange and the web panel are integrally formed, the structural strength is improved, the bonding area is large, the connection with the blade is more stable, the stress at the corner of the bonding surface is small, local stress concentration is eliminated, and the operational reliability is improved.

[0062] Typically, three blade webs are provided in the blade casing. For example, two main beam webs are generally placed in the main beam region, and a trailing edge web is placed in the trailing edge region of the blade. Both the main beam webs and the trailing edge webs can be blade webs according to embodiments of this application.

[0063] While the blade web according to the embodiments of this application can reduce the risk of blade damage to some extent, it still cannot completely avoid damage such as insufficient adhesive bonding or damage at the web corners. However, due to the relatively narrow space between the two main beam webs and the space from the trailing edge web to the trailing edge of the blade, the bonding condition or damage to the blade web flange is difficult to detect. If insufficient adhesive bonding or damage to the web flange is not detected in time, it may lead to blade failure in severe cases. Therefore, according to the embodiments of this application, a detection hole 130 is also provided on the blade web for installing a detection sensor to facilitate the detection of the bonding condition and damage of the blade web and to repair it in a timely manner.

[0064] Figure 7 A schematic structure of a blade web according to another embodiment of this application is shown. Figure 7 As shown, a detection hole 130 is provided on the web of the blade. The detection hole 130 is provided on the web panel 110 and penetrates the web panel 110, so that an endoscope can be used to detect the bonding condition of the web flange or the whitening and damage of the flange through the detection hole 130.

[0065] As an example, the detection hole 130 has a chamfered structure. Optionally, the chamfer ratio is less than 1:3. By setting the detection hole 130 to have a chamfered structure, stress transition is facilitated and stress concentration is prevented.

[0066] In addition, such as Figure 7 and Figure 8 As shown, the second layup 113 covers the chamfered area of ​​the detection hole 130, thereby forming a layered reinforcement structure on the chamfered area of ​​the detection hole 130 to minimize the impact of the detection hole 130 on the strength of the blade web.

[0067] Figure 9 A schematic diagram illustrating the forming process of a blade web according to another embodiment of this application is shown. Figure 9 As shown, during the manufacturing process of the blade web, a core material opening 114 is formed on the web core material 111, and the core material opening 114 has a chamfered structure. During the layup process, the layups on both sides of the web core material 111 cover the core material opening 114, especially the second layup 113, which is laid in the chamfered area of ​​the core material opening 114 to form a reinforcing structure. Furthermore, the first layup 112 and the second layup 113 are stacked and bonded together to form a platform area. After the web has been cured and formed, a hole is drilled at the corresponding position of the core material opening 114 to penetrate the layup reinforcement structure, thereby obtaining a test hole 130 that penetrates the web panel 110. The perforation is formed in the platform area, and the inner diameter of the perforation is smaller than the minimum inner diameter of the core material opening 114, so that the platform area 116 formed by the bonding of the first layup 112 and the second layup 113 is still retained on the outer periphery of the perforation.

[0068] According to an embodiment of this application, the detection hole 130 has a chamfered region 115 and a platform region 116 connected to the chamfered region. A through hole is formed on the web core material 111 at a position corresponding to the platform region 116. The diameter of the through hole is smaller than the minimum diameter of the core material opening 114, thus retaining a platform region around the outer periphery of the through hole. After the web is cured and formed, it is only necessary to open the skin structure at the position corresponding to the platform region 116 and the existing opening structure 114. The subsequent processing operation is simple and avoids damage to the strength of the web panel 110. As an example, the diameter of the detection hole 130 is generally 10-100mm.

[0069] According to an embodiment of this application, a platform region 116 is formed by bonding the first ply 112 and the second ply 113 together in the core material opening 114. Without the platform region 116, stress concentration can easily occur when the force on the web is transmitted to the chamfered area, potentially causing the ply to delaminate and crack at that location. By forming the platform region, the bond between the first ply 112 and the second ply 113 is strengthened, forming a single integrated structure during vacuum injection molding, thus preventing cracking at the inspection hole.

[0070] According to embodiments of this application, the blade web can be inspected endoscopically through the opening area to check the condition of the web flange bonding or the whitening damage of the flange, increasing the inspectability of the blade. Furthermore, blade damage can be repaired through the inspection hole 130, significantly reducing blade web problems.

[0071] According to one aspect of this application, a wind turbine blade is provided, the blade including a blade shell and the aforementioned blade web. Specifically, the blade shell includes a pressure surface shell and a suction surface shell, and the two sides of the blade web are bonded between the pressure surface shell and the suction surface shell by a flange structure.

[0072] According to one aspect of this application, a wind turbine generator set is also provided, the wind turbine generator set including a tower, a generator mounted on the top of the tower and an impeller connected to the main shaft of the generator set, the impeller including at least two blades, the blades being the blades described above.

[0073] Although specific details of the embodiments of this application have been described in detail with reference to the accompanying drawings, the scope of protection of this application is not limited by the description. Without departing from the principles of this application, those skilled in the art can make corresponding modifications and variations, which will fall within the scope of protection of this application.

Claims

1. A blade web, characterized in that, The blade web includes a web face plate (110) and a flange (120) located at the end of the web face plate (110), the web face plate (110) comprising: web core(111); The first skin includes multiple first plies (112) laid on a first side of the web core material (111) and has first ply extensions extending beyond the end of the web core material (111). The second skin includes multiple second lay-ups (113) laid on the second side of the web core material (111), with the first side and the second side opposite to each other; In this process, a portion of the first ply extension is folded over at the end of the web core material to the second side of the web core material, stacked with the second ply (113), and located between the second ply (113) and the web core material (111).

2. The blade web according to claim 1, characterized in that, The flange (120) includes a main flange (121) located on one side of the web panel (110), the multi-layer first ply (112) having a second ply extension extending beyond the end of the web core material (111), another portion of the multi-layer first ply extension and the second ply extension being bent at a predetermined angle relative to the end of the web core material (111) and stacked on top of each other to form the main flange (121).

3. The blade web according to claim 2, characterized in that, The flange (120) also includes an auxiliary flange (122) located on the other side of the web panel (110). The auxiliary flange (120), the web panel (110), and the main flange (121) are integrally formed by vacuum injection process.

4. The blade web according to claim 3, characterized in that, The blade web also includes an auxiliary flange reinforcement structure (123), which is disposed on the auxiliary flange (122) and extends beyond the auxiliary flange (122) to overlap with the first layup (112).

5. The blade web according to claim 4, characterized in that, The auxiliary flange reinforcement structure (123) is a preform or a hand lay-up layer, wherein the hand lay-up layer comprises at least two lay-ups.

6. The blade web according to any one of claims 3-5, characterized in that, The radius of the auxiliary flange is greater than or equal to 10mm.

7. The blade web as described in claim 1, characterized in that, An inspection hole (130) is provided on the web panel (110) through the web panel (110).

8. The blade web according to claim 7, characterized in that, The detection hole (130) has a chamfered structure, and the chamfered area of ​​the detection hole is covered by the second layup.

9. The blade web according to claim 8, characterized in that, The detection hole (130) also includes a platform region (116) connected to the chamfered region, wherein the first ply and the second ply are stacked and combined with each other in the platform region.

10. A method for forming a blade web, characterized in that, The blade web forming method employs a blade web forming mold, which includes a supporting base plate (210), a boss (220) disposed on the supporting base plate (210), flange baffles (230) located at both ends of the boss (220), and mold strips (240) disposed at both ends of the boss (220). The blade web forming method includes the following steps: An auxiliary flanging layer is laid on the flanging baffle (230), and a mold strip is placed between the boss (220) and the flanging baffle (230). The lower end of the auxiliary flanging layer is fixed, and the upper end of the auxiliary flanging layer is bent toward the boss (220) and placed on the boss (220). Multiple first ply layers (112) are laid on the boss (220) and the first ply layers cover the flange baffle (230); A web core material (111) is placed on the multilayer first ply (112); A portion of the first layup (112) is folded over to the upper surface of the web core material (111); Multiple layers of second layup (113) are laid on the web core material (111); Vacuum casting is used to obtain the blade web.

11. The blade web forming method according to claim 10, characterized in that, The method further includes: setting an auxiliary flange reinforcement structure at the auxiliary flange, wherein the auxiliary flange reinforcement structure (123) is a preform or a hand lay-up layer, and the hand lay-up layer includes at least two lay-ups.

12. The blade web forming method according to claim 10, characterized in that, The web core material (111) is provided with a core material opening (114), the core material opening (114) has a chamfer, the first ply (112) and the second ply (113) respectively cover the two sides of the core material opening (114), and the blade web forming method further includes: after the blade web is cured and formed, forming a through hole at the corresponding position of the core material opening (114), the diameter of the through hole is smaller than the minimum diameter of the core material opening (114), thereby forming a platform area on the outer periphery of the through hole.

13. A blade for a wind turbine generator set, characterized in that, The blade for a wind turbine generator includes a blade shell and a blade web as described in any one of claims 1-9, the blade web being disposed within the blade shell.

14. A wind turbine generator set, characterized in that, The wind turbine generator set includes blades for a wind turbine generator set as described in claim 13.

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