Blade main beam web bonding structure, blades and generator set

Abstract

This invention relates to the field of wind power generation technology, providing a blade main beam web bonding structure, a blade, and a generator set. The blade main beam web bonding structure includes a main beam and a web. The main beam has a bonding groove containing adhesive. An end plate is provided at the end of the web. The main beam provides a limiting effect on the end plate along the depth direction of the bonding groove. A gap is formed between the side of the end plate closest to the main beam and the bottom of the bonding groove. The end plate is bonded and fixed to the main beam using adhesive. The blade main beam web bonding structure, blade, and generator set provided by this invention achieve a fixed connection between the main beam and the end plate through the adhesive in the bonding groove. Because the main beam has a bonding groove, and the main beam provides a limiting effect on the end plate along the depth direction of the bonding groove, the adhesive in the bonding groove has a suitable and uniform thickness, thus ensuring a strong bond between the web and the main beam, avoiding insufficient adhesive, and making the process easier to operate during production.

Description

Technical Field

[0001] This invention relates to the field of wind power generation technology, and in particular to a blade main beam web bonding structure, blade, and generator set. Background Technology

[0002] As wind turbine blades become longer and bear greater loads, pultruded carbon steel plates and pultruded glass plates are being used extensively in blades. In addition, the amount of structural adhesives used is also increasing.

[0003] The web of the wind turbine blade is bonded to the main beam with structural adhesive. In the existing fixing method, the end of the web is usually directly bonded to the surface of the main beam. It is difficult to ensure that the thickness of the structural adhesive at the bonding position is uniform, and there may be insufficient adhesive in some positions, which will affect the structural strength of the bonding position. Summary of the Invention

[0004] This invention provides a blade main beam web bonding structure, a blade, and a generator set to solve the problem in the prior art that it is difficult to ensure the uniform thickness of the structural adhesive at the bonding position between the web and the main beam of the wind turbine blade.

[0005] This invention provides a bonding structure for the web of a blade main beam, comprising:

[0006] The main beam is provided with an adhesive groove, and adhesive is provided in the adhesive groove;

[0007] The web has an end plate at its end. The main beam limits the end plate along the depth direction of the adhesive groove. A gap is formed between the side of the end plate near the main beam and the bottom of the adhesive groove. The end plate is bonded and fixed to the main beam by the adhesive.

[0008] According to the present invention, in a blade main beam web bonding structure, the outer wall of the main beam is located at the periphery of the outer side of the bonding groove, which limits the end plate along the depth direction of the bonding groove.

[0009] According to the present invention, a blade main beam web bonding structure is provided, wherein the end plate includes a first connecting portion and a first protrusion, the first connecting portion is fixedly connected to the web, the first connecting portion is located outside the bonding groove, the first protrusion is located on the side of the first connecting portion away from the web, the first protrusion is inserted into the bonding groove, and a gap is formed between the side of the first protrusion away from the web and the bottom of the bonding groove.

[0010] According to the present invention, a bonding structure for the web of a blade main beam includes a bonding groove comprising a first groove and a second groove. The first groove is disposed at the bottom of the second groove, and a step is formed between the second groove and the first groove. The adhesive is located in the first groove, and the end plate is inserted into the bonding groove. The step is adapted to limit the end plate along the depth direction of the bonding groove.

[0011] According to the present invention, a bonding structure for the web of a blade main beam is provided.

[0012] The end plate includes a second connecting portion and a second protrusion. The second connecting portion is located outside the adhesive groove, and the second protrusion is inserted into the second groove. The ladder forms a limit on the second protrusion along the depth direction of the adhesive groove.

[0013] Alternatively, the end plate includes a third connecting portion and a third protrusion, the third connecting portion being inserted into the second groove, the third protrusion being inserted into the first groove, the thickness of the third protrusion being less than the depth of the first groove, and the ladder forming a limit on the third connecting portion along the depth direction of the adhesive groove.

[0014] According to the present invention, the end plate is a plate-shaped structure adapted to the opening of the bonding groove, the end plate is inserted into the second groove and located on the outside of the platform.

[0015] According to the present invention, a blade main beam web bonding structure is provided, wherein a support protrusion is provided on the side of the end plate away from the web, the support protrusion is engaged with the bottom of the bonding groove, and the length of the support protrusion is greater than the depth of the bonding groove.

[0016] According to the present invention, the adhesive for bonding the web of a blade main beam has an extension portion that extends from the gap between the main beam and the end plate to the outside of the bonding groove.

[0017] According to the present invention, the end plate of the blade main beam web bonding structure is a pultruded sheet.

[0018] The present invention also provides a blade, including the above-described blade main beam web bonding structure.

[0019] The present invention also provides a generator set, including the above-described blade main beam web bonding structure, or including the above-described blade.

[0020] The blade main beam web bonding structure provided by the present invention can achieve a fixed connection between the main beam and the end plate through the adhesive in the bonding groove. Since the main beam is provided with the bonding groove, the main beam limits the end plate along the depth direction of the bonding groove, which can ensure that the adhesive in the bonding groove has a suitable thickness and uniform thickness. Therefore, it can ensure a firm bond between the web and the main beam, avoid situations such as insufficient adhesive, and is easier to operate in the production process.

[0021] Furthermore, the blades and generator sets provided by the present invention also possess the advantages described above due to the blade main beam web bonding structure described above. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is one of the overall structural schematic diagrams of a blade main beam web bonding structure provided by the present invention;

[0024] Figure 2 This is the second overall structural schematic diagram of a blade main beam web bonding structure provided by the present invention;

[0025] Figure 3 This is the third overall structural schematic diagram of a blade main beam web bonding structure provided by the present invention;

[0026] Figure 4 This is the fourth overall structural schematic diagram of a blade main beam web bonding structure provided by the present invention;

[0027] Figure 5 This is the fifth overall structural schematic diagram of the blade main beam web bonding structure provided by the present invention;

[0028] Figure 6 This is the sixth overall structural schematic diagram of a blade main beam web bonding structure provided by the present invention;

[0029] Reference numerals: 100, main beam; 110, adhesive groove; 111, first groove; 112, second groove; 113, platform; 200, end plate; 210, first connecting part; 211, second connecting part; 212, third connecting part; 220, first protrusion; 221, second protrusion; 222, third protrusion; 230, support protrusion; 300, web; 400, adhesive; 410, extension. Detailed Implementation

[0030] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of the invention.

[0031] In the description of the embodiments of the present invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of the present invention. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0032] In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of the present invention based on the specific circumstances.

[0033] In embodiments of the present invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0034] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0035] The following is combined Figures 1 to 6 This invention describes a blade main beam web bonding structure. The bonding structure includes a main beam 100 and a web 300. The main beam 100 is provided with a bonding groove 110, which can be square, circular, elliptical, irregular in shape, etc., and can be flexibly designed as needed. Adhesive 400 is disposed within the bonding groove 110. An end plate 200 is provided at the end of the web 300, and the end plate 200 is angled relative to the web 300. This angle is determined during production based on the relative angle between the web 300 and the main beam 100, ensuring that the end plate 200 fits the main beam 100 at the opening of the bonding groove 110. The main beam 100 limits the end plate 200 along the depth direction of the adhesive groove 110. This limitation prevents the end plate 200 from moving excessively towards the bottom of the adhesive groove 110, thus ensuring a gap between the side of the end plate 200 closest to the main beam 100 and the bottom of the adhesive groove 110. This gap is the thickness of the adhesive 400. The end plate 200 is then bonded and fixed to the main beam 100 using the adhesive 400.

[0036] In the above scheme, the adhesive groove 110 is used to contain the adhesive 400, and the thickness of the adhesive 400 is ensured by the cooperation between the end plate 200 and the main beam 100, so that the end plate 200 and the main beam 100 have good connection strength, the structure is more robust, the yield is high, and the bonding process is simpler and easier to operate.

[0037] The bonding groove 110 can be formed during the forming process of the main beam 100. Specifically, during the forming process of the main beam 100, at least one layer of plate is removed from the main beam 100, and the bonding groove 110 is formed at the location of the removed plate. Preferably, a 5mm thick plate is removed during the forming process of the main beam 100 to form a 5mm deep bonding groove 110. Of course, the bonding groove 110 can also be formed by subsequent machining after the main beam 100 is formed.

[0038] In this embodiment of the invention, by setting the bonding groove 110, it is not only convenient to connect the web plate 300 and the main beam 100, but also to reduce the number of layers of the main beam 100, reduce the weight of the main beam 100, and reduce production costs.

[0039] In some embodiments of the present invention, the outer wall of the main beam 100, located at the periphery of the outer side of the adhesive groove 110, limits the end plate 200 along the depth direction of the adhesive groove 110. During the bonding process between the main beam 100 and the end plate 200, the outer wall of the main beam 100 supports the end plate 200 to ensure the thickness of the adhesive 400. It is understood that, in order to achieve the limitation of the end plate 200 by the outer wall of the main beam 100, the dimension of the end plate 200 in at least one direction parallel to the outer wall of the main beam 100 should be larger than the size of the opening of the adhesive groove 110.

[0040] by Figure 1 As shown in the example, the end plate 200 adopts a plate-like structure adapted to the outer wall of the main beam 100. The dimension of the end plate 200 in the length direction is larger than the dimension of the opening of the adhesive groove 110. Furthermore, the dimensions of the end plate 200 in both the length and width directions can be larger than the dimension of the opening of the adhesive groove 110, so that the end plate 200 can be mounted at the opening position of the adhesive groove 110. In this case, the thickness of the adhesive 400 is not less than the depth of the adhesive groove 110.

[0041] like Figure 2As shown, in one alternative embodiment, the end plate 200 includes a first connecting portion 210 and a first protrusion 220. The first connecting portion 210 is fixedly connected to the web plate 300. The size of the first connecting portion 210 is larger than the size of the opening of the adhesive groove 110. The first connecting portion 210 is located outside the adhesive groove 110, and the outer wall of the main beam 100 can limit the first connecting portion 210. The first protrusion 220 is located on the side of the first connecting portion 210 away from the web plate 300. The shape of the first protrusion 220 is adapted to the opening shape of the adhesive groove 110. The first protrusion 220 is inserted into the adhesive groove 110. It should be noted that the sidewall of the first protrusion 220 can be fitted with the sidewall of the adhesive groove 110, or a gap can be formed. When a gap is formed between the sidewall of the first protrusion 220 and the sidewall of the adhesive groove 110, it can be filled with adhesive 400. The side of the first protrusion 220 facing away from the web 300 forms a gap with the bottom of the adhesive groove 110. The gap between the first protrusion 220 and the bottom of the adhesive groove 110 is the arrangement position of the adhesive 400. The distance between the first protrusion 220 and the bottom of the adhesive groove 110 is the thickness of the adhesive 400. In order to make the thickness of the adhesive 400 uniform, the side of the first protrusion 220 near the bottom of the adhesive groove 110 can be set to the same shape as the bottom of the adhesive groove 110. For example, the side of the first protrusion 220 near the bottom of the adhesive groove 110 and the bottom of the adhesive groove 110 can be set to a parallel plane.

[0042] In the above scheme, the cooperation between the outer wall of the main beam 100 and the first connecting part 210 ensures the thickness of the adhesive 400, and the cooperation between the first protrusion 220 and the adhesive groove 110 plays a positioning role during the bonding process, ensuring the accuracy of the installation position, reducing the difficulty of operation, and improving the molding efficiency. Furthermore, the cooperation between the first protrusion 220 and the adhesive groove 110 can also increase the structural strength of the connection between the web 300 and the main beam 100.

[0043] Figure 1 and Figure 2 The two forms shown exemplify the scheme of limiting the end plate 200 by the position of the outer wall of the main beam 100 on the outer periphery of the adhesive groove 110. The following exemplifies the scheme of limiting the end plate 200 by the main beam 100 in other ways.

[0044] like Figures 3 to 5As shown, in some embodiments of the present invention, the bonding groove 110 includes a first groove 111 and a second groove 112. The second groove 112 extends from the outer wall of the main beam 100 into the interior of the main beam 100. The first groove 111 is disposed at the bottom of the second groove 112. Preferably, the first groove 111 is disposed at the middle position of the bottom of the second groove 112. A step 113 is formed between the second groove 112 and the first groove 111. It can be understood that the step 113 can be a continuous structure or a multi-segment structure. Taking the first groove 111 and the second groove 112 as rectangular grooves parallel in the length direction as an example, when the length and width of the second groove 112 are both greater than the first groove 111, the step 113 is a continuous square-ring structure. When the length of the second groove 112 is the same as the length of the first groove 111, and the width is greater than the width of the first groove 111, the step 113 includes rectangular structures at both ends.

[0045] The adhesive 400 is located within the first groove 111, and the end plate 200 is inserted into the adhesive groove 110. The step 113 is adapted to limit the end plate 200 along the depth direction of the adhesive groove 110. By limiting the end plate 200 with the step 113, the end plate 200 can be prevented from being inserted too deeply into the adhesive groove 110. In this design, the cooperation between the end plate 200 and the second groove 112 can play a positioning role, reducing production difficulty and increasing the connection strength between the main beam 100 and the web 300. It is understood that during the production process, the end plate 200 can be made to fit against the side wall of the second groove 112 and the outer side of the step 113, or a gap can be formed. When a gap is formed between the end plate 200 and the side wall of the second groove 112 and the outer side of the step 113, the adhesive 400 is used to fill the gap.

[0046] like Figure 3As shown, in one alternative embodiment, the end plate 200 includes a second connecting portion 211 and a second protrusion 221. The second connecting portion 211 is fixedly connected to the web plate 300, and the second protrusion 221 is disposed on the side of the second connecting portion 211 opposite to the web plate 300. The size of the second connecting portion 211 is larger than the size of the opening of the adhesive groove 110. The second connecting portion 211 is located outside the adhesive groove 110. The shape of the second protrusion 221 is adapted to the shape of the second groove 112. The second protrusion 221 is inserted into the second groove 112, and the step 113 limits the second protrusion 221 along the depth direction of the adhesive groove 110. It should be noted that, compared to the previous scheme where the first connecting part 210 is located outside the adhesive groove 110, the first protrusion 220 is inserted into the adhesive groove 110, and the outer wall of the main beam 100 can limit the first connecting part 210, this scheme mainly relies on the cooperation between the second protrusion 221 and the platform 113 for limiting. When the second protrusion 221 contacts the platform 113, the second connecting part 211 and the outer wall of the main beam 100 can be fitted together or separated.

[0047] like Figure 4 As shown, in another alternative embodiment, the end plate 200 includes a third connecting portion 212 and a third protrusion 222. The third connecting portion 212 is fixedly connected to the web plate 300, and the third protrusion 222 is disposed on the side of the third connecting portion 212 away from the web plate 300. The cross-sectional dimension of the third connecting portion 212 is not greater than the dimension of the second groove 112 and not less than the cross-sectional dimension of the first groove 111, preferably adapted to the shape of the second groove 112, and the third connecting portion 212 is inserted into the second groove 112. The cross-sectional dimension of the third protrusion 222 is not greater than the cross-sectional dimension of the first groove 111, and preferably the shape of the third protrusion is adapted to the first protrusion. The third protrusion 222 is inserted into the first groove 111, and the thickness of the third protrusion 222 is less than the depth of the first groove 111, so that a gap is formed between the third protrusion and the bottom of the first groove 111, and the adhesive 400 is located between the third protrusion and the bottom of the first groove 111. In this design, the ladder 113 limits the third connecting part 212 along the depth direction of the adhesive groove 110, ensuring that a gap is formed between the third protrusion and the bottom of the first groove 111, reserving space for the adhesive 400.

[0048] like Figure 5As shown, in another alternative embodiment, the end plate 200 is a plate-shaped structure adapted to the opening of the adhesive groove 110. The end plate 200 is inserted into the second groove 112 and located outside the platform 113, which restricts the insertion depth of the end plate 200. In this embodiment, the thickness of the adhesive 400 is not less than the depth of the first groove 111 (when the end plate 200 is in contact with the platform 113, the thickness of the adhesive 400 is the same as the depth of the first groove 111; when there is a gap between the end plate 200 and the platform 113, the thickness of the adhesive 400 is greater than the depth of the first groove 111). In this embodiment, the thickness of the end plate 200 can be set to be no greater than the depth of the second groove 112, so that the end plate 200 can be completely hidden in the second groove 112; or the thickness of the end plate 200 can be set to be greater than the depth of the second groove 112, so that part of the end plate 200 is inserted into the second groove 112.

[0049] In all three schemes mentioned above, the end plate 200 can be limited by the ladder 113 structure to ensure the thickness of the adhesive 400.

[0050] like Figure 6 As shown, in some embodiments of the present invention, a support protrusion 230 is provided on the side of the end plate 200 away from the web plate 300. The support protrusion 230 extends away from the web plate 300 and abuts against the bottom of the adhesive groove 110. The length of the support protrusion 230 is greater than the depth of the adhesive groove 110. During the bonding process between the web plate 300 and the main beam 100, a gap is formed between the end plate 200 and the main beam 100 under the support of the support protrusion 230, allowing the web plate 300 to slightly adjust its mating angle with the main beam 100. When the adhesive 400 solidifies, the mating angle between the web plate 300 and the main beam 100 is fixed. It should be noted that, under the support of the support protrusion 230, the web plate 300 can only be adjusted to a small angle. When the angle is adjusted to the limit position, the web plate 300 cannot be further adjusted to the same angle due to the limiting effect of the outer wall of the main beam 100 or the platform 113 on the end plate 200. This setting allows the web plate 300 to adapt to different installation positions and helps to eliminate production errors.

[0051] Optionally, the end of the support protrusion 230 facing away from the end plate 200 is provided with a rounded head structure, so that the end plate 200 and the web plate 300 can be adjusted to different directions more smoothly.

[0052] In this embodiment, during the production of the web 300, the support protrusion 230 can be wrapped together with the end plate 200 and the web 300 using a covering cloth, or the support protrusion 230 can be left unwrapped. During the production process, the support protrusion 230 can be pre-supported, the support protrusion 230 can be bonded to the inner core of the end plate 200, and the support protrusion 230 can be inserted into the hole reserved in the injection mold before the injection of the end plate 200 and the web 300; alternatively, the support protrusion 230 can be formed by injection using the groove reserved in the injection mold during the injection of the end plate 200 and the web 300, which is not specifically limited here.

[0053] In the above scheme, the cross-sectional dimensions of the supporting protrusion 230 are much smaller than those of the adhesive groove 110. Preferably, the supporting protrusion 230 does not contact the inner wall of the adhesive groove 110 in any direction perpendicular to the depth of the adhesive groove 110, and the sidewalls of the supporting protrusion 230 are all covered by adhesive 400. This arrangement makes angle adjustment more convenient and avoids the supporting protrusion 230 occupying too much space, which helps to ensure the firmness of the connection between the web 300 and the main beam 100.

[0054] In some embodiments of the present invention, the adhesive 400 is provided with an extension 410, which extends from the gap between the main beam 100 and the end plate 200 to the outside of the adhesive groove 110. For details, please refer to [reference needed]. Figure 6 The structure shown is illustrated. It should be noted that the extension 410 in this solution can be applied to the web bonding structure of the blade main beam 100 in any of the above-described solutions. During the bonding operation between the end plate 200 and the main beam 100, the extension 410 is formed by creating a gap between the main plate and the main beam 100 that communicates with the bonding groove 110. Furthermore, it should be noted that the extension 410 can be as follows: Figure 6 The beam may extend to the slot as shown, or it may extend to the slot and then continue along the outer wall of the main beam 100, or it may not extend to the slot. No specific limitation is made here.

[0055] refer to Figure 1 and Figure 4In some embodiments of the present invention, the end plate 200 uses pultruded sheet as its core, enabling the end plate 200 to provide rigidity and ensure the structural strength of the connection between the web 300 and the main beam 100. Optionally, the end plate 200 is angled and positioned at one end of the core material of the web 300, and is cast-molded after being covered with a skin, ensuring a firm connection between the end plate 200 and the web 300. In some prior art, the end structure of the web 300 is formed by directly setting glass fiber flanges on both sides of the web 300 and casting. Although this arrangement meets the shear resistance requirements to a certain extent, it does not have strong compressive strength and cannot increase the flapping stiffness of the blade. In this application, by adding a pultruded sheet, the flapping stiffness of the blade can be increased, thus functioning as the main beam 100, which can be better applied to the scheme of setting the bonding groove 110 in the present invention. The use of pultruded sheet as the inner core of end plate 200 also facilitates the adjustment of the angle between end plate 200 and web plate 300 during the production process. Specifically, before injection, the rigidity of the pultruded sheet can be used to easily adjust the angle between end plate 200 and web plate 300. After adjusting end plate 200 and web plate 300 to a suitable angle, they are supported by support components such as silicone. After injection, the angle between end plate 200 and web plate 300 can be fixed.

[0056] This invention also provides a blade, including the aforementioned blade main beam web bonding structure.

[0057] The present invention also provides a generator set, including the above-described blade main beam web bonding structure, or including the above-described blade.

[0058] The blades and generator sets provided in this invention have better structural strength and can achieve the purpose of weight reduction and cost reduction because they adopt the blade main beam web bonding structure of this application.

[0059] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A blade spar web bonding structure, characterized by, The application relates to a blade main beam web bonding structure. The main beam is provided with a bonding groove, the bonding groove comprises a first groove and a second groove, the first groove is arranged at the groove bottom of the second groove, a step is formed between the first groove and the second groove, and bonding glue is arranged in the bonding groove. The end plate of the web is provided with a third connecting part and a third protruding part, the third connecting part is inserted into the second groove, the third protruding part is inserted into the first groove, the thickness of the third protruding part is smaller than the depth of the first groove, the step limits the third connecting part along the depth direction of the bonding groove, the side of the end plate away from the web is provided with a supporting protruding part, the supporting protruding part is in abutting fit with the groove bottom of the bonding groove, the length of the supporting protruding part is greater than the depth of the bonding groove, a space is formed between the side of the end plate close to the main beam and the groove bottom of the bonding groove, and the end plate is bonded and fixed with the main beam through the bonding glue.

2. The blade spar web bond structure of Claim 1, wherein, The outer wall of the main beam is located at the position of the periphery outside the bonding groove, and limits the end plate along the depth direction of the bonding groove.

3. The blade spar web bond structure of Claim 1, wherein, The bonding glue is provided with an extension part, the extension part extends to the outside of the bonding groove through the gap between the main beam and the end plate.

4. The blade spar web bond structure according to any one of claims 1 to 3, wherein The end plate adopts a pultruded plate as an inner core structure.

5. A blade, characterized in that The application relates to a blade main beam web bonding structure.

6. A generator set characterized by The application relates to a blade main beam web bonding structure.

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