Core material of blade web plate of wind generating set, web plate, blade and wind generating set

Abstract

The utility model provides a core material of a blade web plate of a wind generating set, the web plate, a blade and the wind generating set, a plurality of flow channels are arranged on the surface of the core material, and the plurality of flow channels extend along the same direction. According to the core material provided by the utility model, the plurality of runners for flowing of the poured liquid resin are arranged on the surface of the core material, so that the liquid resin can smoothly flow through the runners and fully spread the core material, auxiliary materials such as a flow guide net can be omitted, the process is simplified, and the cost is saved; furthermore, the plurality of runners extend along the same direction, so that the flowing of the liquid resin is more orderly and smoother.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of wind power generation, in particular to a core material of a blade web of a wind turbine generator, the web, the blade and the wind turbine generator. BACKGROUND

[0002] With the increasing power of wind turbine generators, the trend of large-scale blades has become more and more obvious, and the strength of the web has a more obvious impact on the blade. Large blades often use I-shaped webs, i.e. webs with auxiliary flanges. Since the structure of the I-shaped web is more complex than that of the commonly used C-shaped web, problems such as half-dry yarn, wrinkles formed by flow channel indentation, discoloration of the core material under the flow channel, etc. are prone to occur after pouring, which affects the pouring quality of the web. In related technologies, a flow guide net is often laid between the core materials to guide the flow of liquid resin. The laying area of the flow guide net is large, the operation is difficult, and the cost is high.

[0003] The present disclosure provides a core material that matches the auxiliary material-free layout, can improve the pouring quality of the I-shaped web, reduce defects such as half-dry yarn, wrinkles formed by flow channel indentation, discoloration of the core material under the flow channel, etc., and save auxiliary material cost. CONTENT OF THE UTILITY MODEL

[0004] The main purpose of the present disclosure is to provide a core material to solve the problems in the related art that the wind power industry is prone to have problems such as half-dry yarn, wrinkles formed by flow channel indentation, discoloration of the core material under the flow channel, etc. after pouring, which affects the pouring quality of the web.

[0005] To achieve the above purpose, a first aspect of the present disclosure provides a core material of a blade web of a wind turbine generator, the surface of the core material being provided with a plurality of flow channels, the plurality of flow channels extending in the same direction.

[0006] In some embodiments, the core material is at least two, the at least two core materials being arranged in sequence along the extension direction of the flow channels, and the plurality of flow channels of the two adjacent core materials in the extension direction of the flow channels correspond to each other.

[0007] In some embodiments, a liquid storage area is provided at the position where the two adjacent flow channels in the extension direction of the flow channels contact each other, the liquid storage area being arranged at the outer periphery of the flow channel in the width direction and being in communication with the flow channel. In some embodiments, an outwardly inclined flow guide surface is provided at the opening of the flow channel, and the space between the flow guide surface and the flow channel forms the liquid storage area; or a groove in communication with the flow channel is arranged at the outer periphery of the flow channel, and the groove forms the liquid storage area. In some embodiments, the width of the liquid storage area is 1mm to 10mm.

[0008] In some embodiments, the depth of the liquid storage area is 1mm to 10mm.

[0009] In some embodiments, the core material is in the form of a flat plate, and the flow channels are arranged on the two surfaces opposite in the thickness direction of the core material.

[0010] In some embodiments, the flow channel is a straight one-slot channel.

[0011] In some embodiments, the plurality of flow channels are spaced apart along a preset direction at a preset included angle with the extension direction of the flow channels, and the preset included angle is 80-100 degrees.

[0012] The second aspect of the present disclosure provides a web comprising the core material of any one of the above embodiments.

[0013] The web provided by the embodiments of the present disclosure has the core material of any one of the above embodiments, and thus has the beneficial effects of any one of the above embodiments, which will not be repeated here.

[0014] In some embodiments, a plurality of protrusions are arranged on the surface of the core material facing the mold for pouring the web, so as to form a gap between the core material and the mold.

[0015] In some embodiments, the height of the protrusion is 1-3 mm.

[0016] In some embodiments, the spacing between two adjacent protrusions is 1-2 m.

[0017] In some embodiments, the web comprises a web body and flange turnings at both ends of the web body in the axial direction, and the flange turnings comprise a main flange distributed on the first side of the web body in the chordal direction, and an auxiliary flange distributed on the second side of the chordal direction.

[0018] The third aspect of the present disclosure provides a blade comprising a shell and the web of any one of the above embodiments, the web being supported between the inner walls of the shell, and the first end and the second end of the web abutting the shell, respectively.

[0019] The blade provided by the embodiments of the present disclosure has the web of any one of the above embodiments, and thus has the beneficial effects of any one of the above embodiments, which will not be repeated here.

[0020] The fourth aspect of the present disclosure provides a wind turbine generator set comprising the blade of any one of the above embodiments.

[0021] The wind turbine generator set provided by the embodiments of the present disclosure has the blade of any one of the above embodiments, and thus has the beneficial effects of any one of the above embodiments, which will not be repeated here.

[0022] The core material provided by the embodiment of the present disclosure sets multiple flow channels for the flowing of the liquid resin on the surface of the core material, so that the liquid resin can flow smoothly through the flow channels and cover the core material, thereby eliminating the need for auxiliary materials such as flow guide nets, simplifying the process, and saving costs; further, the multiple flow channels extend along the same direction, so that the flow of the liquid resin is more orderly and smooth.

[0023] Further aspects and / or advantages of the present general inventive concepts will be set forth in part in the following description, and in part will be apparent from the description, or can be learned by practice of the present general inventive concepts. BRIEF DESCRIPTION OF DRAWINGS

[0024] The above and other objects and features of the present application will become more apparent from the following description of an embodiment example, taken in conjunction with the accompanying drawings, which illustrate, by way of example, the principles of the application.

[0025] Figure 1 is a sectional view of a web according to an embodiment of the present application;

[0026] Figure 2 is a structural schematic view of a core material according to an embodiment of the present application;

[0027] Figure 3 is a schematic view of a core material arranged along a first direction according to an embodiment of the present application;

[0028] Figure 4 is a structural schematic view of a core material provided with a liquid storage area according to an embodiment of the present application;

[0029] Figure 5 is a structural schematic view of a core material provided with a protruding portion according to an embodiment of the present application;

[0030] Figure 6 is a structural schematic view of a blade according to an embodiment of the present application.

[0031] Figures 1 to 6 BRIEF DESCRIPTION OF DRAWINGS

[0032] 10 web,

[0033] 110 core material, 111 flow channel, 112 liquid storage area, 113 protruding portion,

[0034] 120 web body, 130 main flange, 140 auxiliary flange,

[0035] 20 blade, 210 housing. DETAILED DESCRIPTION

[0036] 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 exhaustive of the ways in which the methods, apparatuses, and / or systems described herein can be practiced. For instance, the order in which operations are described is not intended to be limiting, except insofar as a particular order can be required for practical implementations described herein, and

[0037] The terminology used herein is for the purpose of describing various examples only and is not intended to be limiting. As used herein, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "includes," "including" and "has," "having" and the like are inclusive and are intended to be equivalent to the term "consisting of."

[0038] Although the terms "first," "second," etc. can be used herein to describe various elements, components, regions, layers and / or sections, these elements, components, regions, layers and / 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 herein as such can also be termed a second element, component, region, layer or section, without departing from the teachings of the examples.

[0039] 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" the other element, "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" another element, "directly connected to" or "directly coupled to" another element, there are no other elements interposed therebetween.

[0040] The terminology used herein is for the purpose of describing various examples only and is not intended to be limiting. As used herein, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "includes," "including" and "has," "having" and the like are inclusive and are intended to be equivalent to the term "consisting of."

[0041] The orientation words such as "upper", "lower", "top" and "bottom" in the present application are all defined based on the orientation of the product in the normal use state.

[0042] Unless otherwise defined, all terms used in the present application, including technical terms and scientific terms, have the same meaning as commonly understood by a person of ordinary skill in the art to which the present application belongs after the present application is understood. Unless explicitly defined herein, terms such as those defined in a general dictionary should be interpreted as having meanings consistent with their meanings in the context of the relevant art and the present application, and should not be interpreted ideally or too formally.

[0043] In addition, in the description of the examples, when it is considered that a detailed description of the related structure or function known will cause a blurred interpretation of the present application, such a detailed description will be omitted.

[0044] With the increasing power of wind turbine generators, the trend of large-scale blades has become more and more obvious, and the strength of the web has a more obvious effect on the blade. In order to improve the supporting performance of the web to the blade shell, most of the large-volume blades use I-shaped webs, that is, webs with auxiliary flanges. Because the structure of the I-shaped web is more complex than that of the commonly used C-shaped web, after the web is poured, the resin flowability is insufficient or unevenly distributed, resulting in a semi-dry yarn problem in which the fiber cloth layer in some areas is not fully soaked with resin, forming a semi-dry state similar to a semi-dry yarn. In the vacuum pouring process, the design of the flow channel and the spiral pipe is unreasonable, causing poor fluid flow, thereby forming indentations and wrinkles on the surface of the web. In addition, the resin in the flow channel reacts with the core material at high temperature, causing the core material covered by the flow channel to discolor. The above problems will affect the pouring quality of the web. Moreover, in the related art, a flow guide net is often laid between the core materials to guide the flow of liquid resin, and the laying area of the flow guide net is large, the operation is difficult, and the cost is high.

[0045] The present application introduces a core material 110, which, compared to the pouring of the web in the related art, eliminates the laying of a flow guide net between the core materials, and at the same time of guiding the flow of liquid resin, can also improve the pouring quality of the I-shaped web, reduce the semi-dry yarn problem, the wrinkle problem caused by the indentation of the flow channel, and the discoloration problem of the core material covered by the flow channel, etc. Defects, while saving the cost of auxiliary materials, also improve the pouring quality of the web.

[0046] The embodiments of the present application will be described below in conjunction with Figures 1 to 6 The embodiments of the present application provide a core material of a blade web of a wind turbine generator, a web, a blade and a wind turbine generator.

[0047] As Figure 1 , Figure 2 and Figure 3As shown, the core material 110 of the blade web of the wind turbine generator set provided by an example embodiment of the present disclosure is provided with a plurality of flow channels 111 on the surface of the core material 110, and the plurality of flow channels 111 extend along the same direction.

[0048] The core material 110 of the blade web of the wind turbine generator set provided by the example embodiment of the present disclosure is provided with a plurality of flow channels 111 on the surface of the core material 110, so that the liquid resin can flow smoothly through the flow channels 111 and cover the core material 110, thereby the auxiliary material such as the flow guide net can be omitted, the process is simplified, and the cost is saved; further, the plurality of flow channels 111 extend along the same direction, so that the flow of the liquid resin is more orderly and smooth.

[0049] Further, as shown in some embodiments, Figure 3 and Figure 4 the core material 110 is at least two, the at least two core materials 110 are arranged in sequence along the extension direction of the flow channel 111, and the plurality of flow channels 111 of the two adjacent core materials 110 in the extension direction of the flow channel 111 correspond one by one. In this way, the plurality of core materials 110 can be spliced and extended, avoiding the problem that a single core material 110 is too large to be processed; further, the plurality of flow channels 111 of the two adjacent core materials 110 in the extension direction of the flow channel 111 correspond one by one, so that the liquid resin can flow smoothly from one of the two adjacent core materials 110 to the other, ensuring the quality of the pouring.

[0050] Further, in order to ensure the smooth flow of the liquid resin, in some embodiments, as shown in Figure 4 the position where the two adjacent flow channels 111 in the extension direction of the flow channel 111 are in contact is provided with a liquid storage area 112, and the liquid storage area 112 is arranged at the outer periphery in the width direction of the flow channel and is in communication with the flow channel. In this way, the liquid storage area 112 can temporarily store the liquid resin, so that there is more liquid resin accumulated at the splicing position of the flow channels 111 of the two adjacent core materials 110, avoiding the misalignment of the splicing position which causes the liquid resin to be difficult to flow to the core material 110 away from the pouring port, thereby ensuring the uniform distribution of the liquid resin and ensuring the quality of the pouring.

[0051] Further, for the specific structure of the liquid storage area 112, in some embodiments, as shown in Figure 4As shown, a flow guide surface inclined outward is arranged at the opening of the flow channel 111, and the space between the flow guide surface and the flow channel 111 forms a liquid storage area 112; or specifically, a flow guide surface inclined outward in the width direction of the flow channel can be arranged at the opening of a section of the flow channel 111 near the splicing position of the two core materials 110, so that the width of the flow of the liquid resin is widened by the liquid storage area formed by the space between the flow guide surface and the flow channel 111, and the width and depth of the space between the flow guide surface and the flow channel 111 can be set as required, wherein the depth of the space between the flow guide surface and the flow channel 111 is generally not more than the depth of the flow channel 111. The structure of the flow guide surface is simple, which not only can widen the width of the flow channel 111 at the splicing position to widen the capacity of the splicing position for storing the liquid resin, but also is beneficial to processing and production, and can save processing cost. It can be understood that the flow guide surface can be a chamfer arranged at the edge of the flow channel.

[0052] Alternatively, the liquid storage area 112 is a groove arranged at the outer periphery of the flow channel 111 and in communication with the flow channel 111, and specifically, the groove can be arranged at the first side and / or the second side in the width direction of a section of the flow channel 111 near the splicing position of the two core materials 110, and the groove is arranged in communication with the flow channel 111, so that the liquid resin in the flow channel 111 automatically enters the groove when flowing through the position, thereby achieving the purpose of temporarily storing the liquid resin, wherein the depth of the groove is generally not more than the depth of the flow channel 111.

[0053] It can be understood that the liquid storage area 112 can be arranged on any one of the adjacent two core materials 110, or the liquid storage area 112 can be arranged on both of the adjacent two core materials 110, which all belong to the protection scope of the present scheme without departing from the design concept.

[0054] Further, for the specific structure of the liquid storage area 112, in some embodiments, as shown in Figure 4 The width W of the liquid storage area 112 is 1 mm to 10 mm. Within this range, the liquid storage area 112 can not only widen the width of the flow channel 111, but also is beneficial to the abutment of the flow channels 111 on the adjacent core materials 110 at the splicing position, thereby facilitating the smooth flow of the liquid resin between the adjacent two core materials 110, and the liquid storage area 112 will not be too wide to occupy too much area of the core material 110, thereby reducing the number of the flow channels 111 arranged on the core material 110.

[0055] Further, for the specific structure of the liquid storage area 112, in some embodiments, the depth N of the liquid storage area 112 is 1 mm to 10 mm. Within this range, on the one hand, the liquid storage area 112 can store the liquid resin and facilitate the smooth flow of the liquid resin between the adjacent two core materials 110, and on the other hand, the depth N of the liquid storage area 112 will not be too deep to affect the structural strength of the core material 110.

[0056] For the specific structure of the core material 110, in some embodiments, as shown in Figure 2 and Figure 3 , the core material 110 is in the form of a flat plate, and the flow channels 111 are arranged on the two surfaces of the core material 110 facing away from each other in the thickness direction. In this way, the flat plate-shaped core material 110 structure is simple and convenient to process, which is conducive to the processing of the flow channels 111; further, arranging the flow channels 111 on the two surfaces of the core material 110 facing away from each other in the thickness direction can increase the area of the flow channels 111 and increase the distribution of the liquid resin.

[0057] It is worth noting that the core material 110 is generally in the form of a flat plate, and the thickness direction is the up-down direction, that is, a plurality of flow channels 111 are arranged on the upper surface and the lower surface of the core material 110.

[0058] For the specific structure of the flow channel 111, in some embodiments, as shown in Figure 2 and Figure 3 , the flow channel 111 is a straight one-slot groove. In this way, the straight one-slot groove structure is simple and conducive to processing and production, and also conducive to the flow of the liquid resin.

[0059] For the specific structure of the flow channel 111, in some embodiments, as shown in Figure 2 and Figure 3 , a plurality of flow channels 111 are spaced apart along a preset direction at a preset angle with the extension direction of the flow channel 111, wherein the preset angle is 80° to 100°. In this way, the plurality of flow channels 111 are spaced apart along a direction substantially perpendicular to the extension direction of the flow channel 111, so that the distribution of the flow channels 111 is more uniform and more conducive to the distribution of the liquid resin on the core material 110. Preferably, the preset angle is 90°, that is, the plurality of flow channels 111 are spaced apart along a direction perpendicular to the extension direction of the flow channel 111, so that the distribution of the flow channels 111 is more regular and more conducive to processing and production.

[0060] As shown in Figure 1 , the second aspect embodiment of the present disclosure provides a web 10, which comprises the core material 110 of any one of the above embodiments.

[0061] The web 10 provided by the embodiments of the present disclosure has the core material 110 of any one of the above embodiments, and thus has the beneficial effects of any one of the above embodiments, which will not be repeated here.

[0062] In some embodiments, as shown in Figure 5As shown, a plurality of protrusions 113 are arranged on the surface of the core material 110 facing the mold for pouring the web 10, so as to form gaps between the core material 110 and the mold. In this way, the protrusions 113 can form gaps between the main structure of the core material 110 and the mold, avoid the core material 110 being too close to the mold, and affect the downward penetration of the liquid resin, thereby causing uneven flow of the liquid resin.

[0063] As an example, the protrusions 113 can be in the form of ribs, bosses, round bumps, etc., which have the advantages of simple structure and convenient processing and production. Of course, the present solution is not limited thereto, and those skilled in the art can design the protrusions 113 to be triangular, pentagonal, elliptical, or even other irregular patterns, which will not be enumerated one by one here, but all of them fall within the protection scope of the present solution without departing from the design concept.

[0064] As an example, the protrusions 113 can be in the form of ribs, bosses, round bumps, etc., which have the advantages of simple structure and convenient processing and production. Of course, the present solution is not limited thereto, and those skilled in the art can design the protrusions 113 to be triangular, pentagonal, elliptical, or even other irregular patterns, which will not be enumerated one by one here, but all of them fall within the protection scope of the present solution without departing from the design concept. Figure 5 As shown, the height H of the protrusions 113 is 1 mm to 3 mm. Within this range, on the one hand, the height H of the protrusions 113 can avoid being too small to form gaps between the core material 110 and the mold, and on the other hand, the height H of the protrusions 113 can also avoid being too large to cause the edge liquid resin to be too thick and waste materials.

[0065] As an example, the protrusions 113 can be in the form of ribs, bosses, round bumps, etc., which have the advantages of simple structure and convenient processing and production. Of course, the present solution is not limited thereto, and those skilled in the art can design the protrusions 113 to be triangular, pentagonal, elliptical, or even other irregular patterns, which will not be enumerated one by one here, but all of them fall within the protection scope of the present solution without departing from the design concept. Figure 5 As shown, the interval L between the two adjacent protrusions 113 is 1 m to 2 m. Within this range, on the one hand, the interval L between the two adjacent protrusions 113 can make the gaps between the core material 110 and the mold uniform, and ensure the uniform distribution of the liquid resin, and on the other hand, the interval L between the two adjacent protrusions 113 can also avoid being too dense to cause waste.

[0066] As an example, the protrusions 113 can be in the form of ribs, bosses, round bumps, etc., which have the advantages of simple structure and convenient processing and production. Of course, the present solution is not limited thereto, and those skilled in the art can design the protrusions 113 to be triangular, pentagonal, elliptical, or even other irregular patterns, which will not be enumerated one by one here, but all of them fall within the protection scope of the present solution without departing from the design concept. Figure 1 and Figure 6 As shown, the web 10 includes a web body 120 and flange turn-ups located at both ends of the web body 120 in the axial direction, and the flange turn-ups include a main flange 130 distributed on the first side of the web body 120 in the chordal direction, and an auxiliary flange 140 distributed on the second side of the web body 120 in the chordal direction.

[0067] In these embodiments, the web 10 includes the web body 120, the main flange 130, and the auxiliary flange 140, and the overall web 10 is generally in the form of I, i.e., an I-shaped section, and the auxiliary flange 140 can increase the connection area between the web 10 and the shell 210 of the blade 20, and enhance the strength of the web 10.

[0068] It can be understood that, due to the more complex structure of the I-shaped web plate 10, it is more necessary to improve the pouring quality of the web plate 10 and reduce the manufacturing cost. The core material 110 of the embodiment of the present application is used to process and manufacture the I-shaped web plate 10, which can solve the technical problems in the related art that the structure of the I-shaped web plate 10 is more complex than the commonly used C-shaped web plate 10, and after pouring, half-dry yarn, wrinkles formed by flow channel 111 indentation, discoloration of core material 110 under flow channel 111 and other problems that affect the pouring quality of the web plate 10, which can improve the pouring quality of the I-shaped web plate 10, reduce half-dry yarn, wrinkles formed by flow channel 111 indentation, discoloration of core material 110 under flow channel 111 and other defects, and save auxiliary material cost.

[0069] Of course, the present scheme is not limited to this, and those skilled in the art can also use a C-shaped web plate 10, which will not be enumerated one by one here, but all belong to the protection scope of the present scheme without departing from the design concept.

[0070] As an example, optionally, the web plate 10 of the embodiment of the present aspect in the pouring process, compared with the pouring process in the related art, uses the flow channel 111 arranged on the upper and lower surfaces of the core material 110 to guide the flow of liquid resin, which can save the device for guiding the flow of resin such as the flow guide net arranged in the mold; and the glue injection pipe is arranged outside the mold, which solves the defects of wrinkles formed by glue injection pipe indentation and discoloration of core material 110 in the flow channel 111 area; the web plate 10 of the embodiment of the present aspect in the pouring process, pouring from one side and pumping from the other side, and the liquid resin flows along the flow channel 111 arranged on the core material 110.

[0071] As shown in Figure 6 The third aspect embodiment of the present disclosure provides a blade 20, which comprises a shell 210 and a web plate 10 according to any one of the above embodiments, the web plate 10 being supported between the inner walls of the shell 210, and the first end and the second end of the web plate 10 abutting against the shell 210, respectively.

[0072] The blade 20 provided by the embodiments of the present disclosure has the web plate 10 of any one of the above embodiments, and thus has the beneficial effects of any one of the above embodiments, which will not be repeated here.

[0073] The fourth aspect embodiment of the present disclosure provides a wind turbine generator, which comprises a blade 20 according to any one of the above embodiments.

[0074] The wind turbine generator provided by the embodiments of the present disclosure has the blade 20 of any one of the above embodiments, and thus has the beneficial effects of any one of the above embodiments, which will not be repeated here.

[0075] Although the embodiments of the present application have been described in detail above, those skilled in the art can make various modifications and variations to the embodiments of the present application without departing from the spirit and scope of the present application. It should be understood that these modifications and variations will still fall within the spirit and scope of the embodiments of the present application defined by the claims.

Claims

1. A core material of a blade web of a wind turbine generator, characterized in that, a plurality of flow channels (111) are arranged on a surface of the core material (110), and the plurality of flow channels (111) extend in the same direction; the core material (110) is at least two, and the at least two core materials (110) are arranged in sequence along the extension direction of the flow channels (111), and the plurality of flow channels (111) of two adjacent core materials (110) correspond to each other in the extension direction of the flow channels (111). 2.The core material of a blade web of a wind turbine generator according to claim 1, characterized in that, a liquid storage area (112) is arranged at a position where two adjacent flow channels (111) in the extension direction of the flow channels (111) are in contact, and the liquid storage area (112) is arranged at the outer periphery of the flow channels (111) in the width direction and is in communication with the flow channels (111). 3.The core material of a blade web of a wind turbine generator according to claim 2, characterized in that, an outwardly inclined flow guide surface is arranged at the opening of the flow channel (111), and the space between the flow guide surface and the flow channel (111) forms the liquid storage area (112); or a groove in communication with the flow channel (111) is arranged at the outer periphery of the flow channel (111), and the groove forms the liquid storage area (112). 4.The core material of a blade web of a wind turbine generator according to claim 2, characterized in that, the width of the liquid storage area (112) is 1mm to 10mm; and / or the depth of the liquid storage area (112) is 1mm to 10mm. 5.The core material of a blade web of a wind turbine generator according to any one of claims 1 to 4, characterized in that, the core material (110) is a flat plate, and the flow channels (111) are arranged on two surfaces opposite in the thickness direction of the core material (110); and / or the flow channel (111) is a flat and straight slot; and / or a plurality of flow channels (111) are distributed in a preset direction at a preset included angle with the extension direction of the flow channels (111), and the preset included angle is 80° to 100°.

6. A web characterized in that, the web comprises: the core material (110) of a blade web of a wind turbine generator according to any one of claims 1 to 5. 7.The web according to claim 6, characterized in that, a plurality of spaced protrusions (113) are arranged on the surface of the core material (110) facing the mold used for pouring the web (10), so that a gap is formed between the core material (110) and the mold. 8.The web according to claim 7, characterized in that, the height of the protrusion (113) is 1mm to 3mm; and / or the interval between two adjacent protrusions (113) is 1m to 2m. 9.The web according to claim 6, characterized in that, The web (10) comprises a web body (120) and flange turn-ups at both ends of the web body (120) in an axial direction, the flange turn-ups comprising a main flange (130) distributed on a first side of the web body (120) in a chordal direction, and an auxiliary flange (140) distributed on a second side of the web body (120) in the chordal direction.

10. A vane, characterized by The vane (20) comprises: a housing (210), and The web (10) as claimed in any one of claims 6 to 9, the web (10) being supported between inner walls of the housing (210), the first and second ends of the web (10) respectively abutting against the housing (210).

11. A wind power unit, characterized in that Comprise: The vane (20) as claimed in claim 10.

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