Wind turbine blade web, wind turbine blades and generator set

Abstract

This invention relates to the field of wind power generation technology, providing a wind turbine blade web, a web fabrication mold, a wind turbine blade, and a generator set. The wind turbine blade web includes a main core material, a flange inner core, and a skin, forming an integral structure of the main core material, flange inner core, and skin through injection molding. The web fabrication mold includes a mold body with a support surface and a pair of receiving grooves. The wind turbine blade web, wind turbine blade, and generator set provided by this invention have a bonding flange with high rigidity, ensuring strong connection with the main beam, increasing the flapping stiffness of the blade, and facilitating rapid adjustment of the bonding flange angle during manufacturing. The web fabrication mold provided by this invention supports the main core material through the support surface and accommodates the flange inner core through the receiving grooves, enabling rapid fabrication of the wind turbine blade web, which improves production efficiency and reduces production costs.

Description

Technical Field

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

[0002] In wind turbine blades, the blade web is bonded to the main beam via adhesive flanges, providing support for the entire main beam structure. The adhesive flanges for the blade web are typically molded from fiberglass layers. The number of fabric layers constituting the adhesive flange is generally small, resulting in low stiffness. Bonding it to the main beam affects the thickness of the adhesive layer, and the adhesive flange only provides bonding, contributing little to the blade's flapping stiffness. Summary of the Invention

[0003] This invention provides a wind turbine blade web, a wind turbine blade, and a generator set to solve the problem that the low stiffness of the adhesive flange in the prior art contributes little to the blade's contact stiffness.

[0004] This invention provides a wind turbine blade web, comprising:

[0005] Main core material;

[0006] A flange inner core, wherein the flange inner core is made of pultruded sheet material, and the flange inner core is disposed at the end of the main core material and arranged at an angle to the main core material; and

[0007] The skin covers the outside of the main core material and the inner core of the flange.

[0008] The wind turbine blade web is an integral structure formed by injection molding of the main core material, the flange inner core, and the skin. The portion of the wind turbine blade web located at the position of the main core material forms the web body, and the portion of the wind turbine blade web located at the position of the flange inner core forms the adhesive flange.

[0009] According to the present invention, a wind turbine blade web includes an inner skin and an outer skin, wherein the inner skin and the outer skin are respectively disposed on both sides of the main core material and both extend along the surface of the flange inner core.

[0010] According to a wind turbine blade web provided by the present invention, the skin further includes a first reinforcing skin and a second reinforcing skin. The first reinforcing skin and the second reinforcing skin are respectively disposed on both sides of the junction position of the main core material and the flange inner core, and are both located on the side of the inner skin and the outer skin close to the joint of the main core material and the flange inner core. The two ends of the first reinforcing skin and the two ends of the second reinforcing skin are respectively configured to extend along the main core material and the flange inner core.

[0011] According to the present invention, a wind turbine blade web has two or more layers of the first reinforcing skin and / or the second reinforcing skin, which are stacked sequentially in a direction away from the junction of the main core material and the flange inner core.

[0012] According to the present invention, a wind turbine blade web further includes a positioning plate, which is disposed on the side of the adhesive flange away from the web body.

[0013] The positioning plate is wrapped between the skin and the flange core, or the positioning plate is fixedly disposed on the outside of the skin.

[0014] The present invention also provides a web fabrication mold suitable for the above-mentioned wind turbine blade web, comprising a mold body, a support surface formed on the upper side of the mold body, a pair of receiving grooves provided on the mold body, the portion of the support surface located between the pair of receiving grooves being adapted to support the main core material, and the receiving grooves being adapted to accommodate the flange inner core.

[0015] According to a web plate manufacturing mold provided by the present invention, the width of the receiving groove gradually decreases from the supporting surface to the bottom of the groove, and the flange inner core is adapted to adjust the vertical angle within the receiving groove.

[0016] The present invention also provides a wind turbine blade, including a main beam and the aforementioned wind turbine blade web, wherein the adhesive flange is bonded and fixed to the main beam on the side away from the web body.

[0017] According to a wind turbine blade provided by the present invention, the main beam is provided with an adhesive groove, the adhesive groove is provided with adhesive, and the adhesive flange is bonded and fixed to the main beam by the adhesive.

[0018] The present invention also provides a generator set, including the above-described wind turbine blade web, or including the above-described wind turbine blade.

[0019] The wind turbine blade web, wind turbine blade, and generator set provided by this invention utilize pultruded sheet material as the inner core of the bonding flange. This material possesses high rigidity, not only meeting the connection requirements between the web and the main beam and ensuring uniform adhesive layer thickness during connection, but also increasing the flapping stiffness of the blade, thus functioning as the main beam. Furthermore, due to the rigidity of the pultruded sheet material, the angle of the bonding flange can be quickly adjusted during injection molding, making production more convenient and increasing its applicability.

[0020] The web plate manufacturing mold provided by this invention can support the main core material through the support surface and accommodate the flange inner core through the receiving groove, thereby realizing the rapid preparation of the web plate of the wind turbine blade, which is conducive to improving production efficiency and reducing production costs. Attached Figure Description

[0021] 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.

[0022] Figure 1 This is a schematic diagram of the structure of a wind turbine blade web provided by the present invention;

[0023] Figure 2 This is one of the structural schematic diagrams showing the skin arrangement in the web of a wind turbine blade provided by the present invention;

[0024] Figure 3 This is the second schematic diagram of a structure showing the skin arrangement in the web of a wind turbine blade provided by the present invention;

[0025] Figure 4 This is one of the schematic diagrams showing the positioning plate structure in the web of a wind turbine blade provided by the present invention;

[0026] Figure 5 This is the second schematic diagram showing the positioning plate structure in the web of a wind turbine blade provided by the present invention;

[0027] Figure 6 This is a schematic diagram of the structure of a web plate manufacturing mold in use, provided by the present invention;

[0028] Figure 7 This is one of the schematic diagrams showing the mating structure between the adhesive flange and the main beam in a wind turbine blade provided by the present invention;

[0029] Figure 8 This is the second schematic diagram of the bonding flange and main beam mating structure in a wind turbine blade provided by the present invention;

[0030] Figure 9 This is the third schematic diagram of the bonding flange and main beam mating structure in a wind turbine blade provided by the present invention;

[0031] Reference numerals: 100, Web body; 110, Main core material; 200, Bonding flange; 210, Flange inner core; 211, First end; 212, Second end; 220, Positioning plate; 300, Inner skin; 310, First reinforcing skin; 320, Second reinforcing skin; 400, Outer skin; 500, Mold body; 510, Support surface; 520, Receiving groove; 600, Main beam; 610, Bonding groove; 620, Adhesive; 630, Positioning groove; 640, Ladder platform. Detailed Implementation

[0032] 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.

[0033] 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.

[0034] 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.

[0035] 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.

[0036] 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.

[0037] The following is combined Figures 1 to 9 The wind turbine blade web of this invention is described in an embodiment. The wind turbine blade web is adapted to be installed in the inner cavity of the wind turbine blade shell and is bonded and fixed to the main beams 600 at the bottom and top of the wind turbine blade shell, respectively, so as to support the wind turbine blade shell.

[0038] Please combine Figure 1 and Figure 2 The wind turbine blade web of this embodiment includes a main core material 110, a flange inner core 210, and a skin.

[0039] The main core material 110 adopts a long strip plate structure. The direction from the root to the tip of the fan blade is the length direction of the main core material 110, and the thickness direction of the fan blade is the width direction of the main core material 110. It can be understood that the main core material 110 changes with the shape of the fan blade. From the root to the tip of the fan blade, the width of the main core material 110 gradually decreases with the thickness of the fan blade.

[0040] The flange inner core 210 is made of pultruded sheet material and is located at the end of the main core material 110. For ease of description, the position where the flange inner core 210 meets the main core material 110 shown in the figure is taken as the boundary. The upper end of the flange inner core 210 is designated as the first end 211 of the flange inner core 210, and the lower end of the flange inner core 210 is designated as the second end 212 of the flange inner core 210. The upper side of the main core material 110 shown in the figure is designated as the first side of the main core material 110, and the lower side of the main core material 110 is designated as the second side of the main core material 110. The flange inner core 210 and the main core material 110 are arranged at an angle. Taking the figure as an example, the angle between the first end 211 of the flange inner core 210 and the main core material 110 is an acute angle, and the angle between the second end 212 of the flange inner core 210 and the main core material 110 is an obtuse angle.

[0041] The skin covers the outside of the joint between the main core material 110 and the flange inner core 210. It should be noted that the skin extends continuously at the joint between the main core material 110 and the flange inner core 210 to ensure the firmness of the connection between the main core material 110 and the flange inner core 210.

[0042] The wind turbine blade web is an integral structure formed by injection molding of the main core material 110, the flange inner core 210, and the skin. The part of the wind turbine blade web located at the position of the main core material 110 forms the web body 100, and the part of the wind turbine blade web located at the position of the flange inner core 210 forms the adhesive flange 200.

[0043] It is understandable that, since both ends of the wind turbine blade web need to be bonded and fixed to the corresponding main beam 600, bonding flanges 200 are formed at both ends of the web body 100 in the width direction of the wind turbine blade web.

[0044] According to an embodiment of the present invention, the wind turbine blade web uses pultruded sheet as the inner core of the bonding flange 200, which gives the bonding flange 200 greater rigidity. When bonding it to the main beam 600, this facilitates ensuring the thickness of the adhesive 620, improving the strength of the connection with the main beam 600. Furthermore, after the bonding flange 200 is connected to the main beam 600, it can also form part of the main beam 600, thereby increasing the flapping stiffness of the blade. During the grouting process, because the pultruded sheet is a rigid plate, it is easy to adjust the angle according to actual installation requirements, resulting in better applicability.

[0045] In some embodiments of the present invention, the skin includes an inner skin 300 and an outer skin 400, which are respectively placed on both sides of the main core material 110 and both extend along the surface of the flange inner core 210.

[0046] Optionally, the inner skin 300 is placed on the first side of the main core material 110, and the two ends of the inner skin 300 extend through the joint position between the main core material 110 and the flange inner core 210 on the corresponding side and continue to extend along the surface of the flange inner core 210. The outer skin 400 is placed on the second side of the main core material 110, and the two ends of the outer skin 400 extend through the joint position between the main core material 110 and the flange inner core 210 on the corresponding side and continue to extend along the surface of the flange inner core 210.

[0047] Furthermore, both ends of the inner skin 300 extend to the first end 211 of the corresponding flange inner core 210; both ends of the outer skin 400 extend to the first end 211 of the corresponding flange inner core 210 after bypassing the second end 212 of the corresponding flange inner core 210. This arrangement facilitates the laying of the skin while ensuring the connection strength between the main core material 110 and the flange inner core 210, thus simplifying the fabrication process of the wind turbine blade web.

[0048] like Figure 3As shown, in some embodiments of the present invention, the skin further includes a first reinforcing skin 310 and a second reinforcing skin 320. The first reinforcing skin 310 and the second reinforcing skin 320 are respectively disposed on both sides of the junction of the main body core material 110 and the flange inner core 210, and are both located on the side of the inner skin 300 and the outer skin 400 near the joint of the main body core material 110 and the flange inner core 210. The two ends of the first reinforcing skin 310 and the two ends of the second reinforcing skin 320 are respectively configured to extend along the main body core material 110 and the flange inner core 210. Specifically, the first reinforcing skin 310 is located at the angle formed by the first side of the main core material 110 and the first end 211 of the flange inner core 210, and the second reinforcing skin 320 is located at the angle formed by the second side of the main core material 110 and the second end 212 of the flange inner core 210. By setting the first reinforcing skin 310 and the second reinforcing skin 320, the two sides of the joint between the main core material 110 and the flange inner core 210 can be reinforced, thereby increasing the firmness of the connection between the adhesive flange 200 and the web body 100.

[0049] Optionally, at least one of the first reinforcing skin 310 and the second reinforcing skin 320 is provided with two or more layers, and they are stacked sequentially in a direction away from the contact position between the main core material 110 and the flange inner core 210. Preferably, the first reinforcing skin 310 and the second reinforcing skin 320 are each provided with two or more layers.

[0050] Furthermore, along the stacking direction of the first reinforcing skin 310, the length of each of the first reinforcing skins 310 increases progressively, and along the stacking direction of the second reinforcing skins 320, the length of each of the second reinforcing skins 320 increases progressively. This allows for contact and fit between each of the first reinforcing skins 310 and the main core material 110 and the flange inner core 210, as well as between each of the second reinforcing skins 320 and the main core material 110 and the flange inner core 210, resulting in better stability at the joint between the main core material 110 and the flange inner core 210 after injection molding.

[0051] Optionally, the first reinforcing skin 310 is located on the inner skin 300 near the main core material 110 and the flange inner core 210, and the second reinforcing skin 320 is located on the outer skin 400 near the main core material 110 and the flange inner core 210. That is, the inner skin 300 covers the outside of the first reinforcing skin 310, and the outer skin 400 covers the outside of the second reinforcing skin 320. This not only facilitates injection and demolding, but also results in better integrity of the wind turbine blade web after injection.

[0052] Combination Figure 4 and Figure 5In some embodiments of the present invention, the wind turbine blade web further includes a positioning plate 220. The positioning plate 220 is a plate-shaped structure adapted to the side wall of the flange inner core 210, and its width is smaller than the width of the flange inner core 210. The length of the positioning plate 220 is the same as the length of the flange inner core 210, or the length of the positioning plate 220 is smaller than the length of the flange inner core 210. The positioning plate 220 is disposed on the side of the bonding flange 200 away from the web body 100. Preferably, the positioning plate 220 is disposed in the middle of the side of the bonding flange 200 away from the web body 100.

[0053] like Figure 4 As shown, in one alternative embodiment, the positioning plate 220 is wrapped between the skin and the flange inner core 210. Specifically, the positioning plate 220 is positioned on the side of the flange inner core 210 away from the main core material 110. The positioning plate 220 and the flange inner core 210 are tightly fitted together. When manufacturing the web of the wind turbine blade, the positioning plate 220 and the flange inner core 210 can be bonded together in advance, and then the flange inner core 210 can be connected to the main core material 110 and the skin, so that the skin covers the outside of the positioning plate 220. This arrangement can make the connection between the positioning plate 220 and the flange inner core 210 more secure after grouting.

[0054] like Figure 5 As shown, in another alternative embodiment, the positioning plate 220 is fixedly mounted on the outside of the skin. During manufacturing, the flange inner core 210, the main core material 110, and the skin can be injected first, and then the positioning plate 220 can be fixed to the adhesive flange 200 by adhesive bonding.

[0055] In both of the above schemes, by setting a positioning plate 220, a limiting protrusion can be formed on the side of the bonding flange 200 away from the web body 100. This limiting protrusion extends along the length direction of the wind turbine blade main beam 600 (i.e., the length direction of the web body 100 and the bonding flange 200). When a bonding groove 610 corresponding to the limiting protrusion is set on the main beam 600, the limiting protrusion can be inserted into the bonding groove 610, and then the bonding flange 200 and the main beam 600 can be connected by adhesive 620. The limiting protrusion can increase the firmness of the connection between the bonding flange 200 and the main beam 600, and also facilitates positioning when connecting the wind turbine blade web to the main beam 600.

[0056] like Figure 6As shown, the present invention also provides a mold for manufacturing the web of the aforementioned wind turbine blade web, comprising a mold body 500, a support surface 510 formed on the upper side of the mold body 500, and a pair of receiving grooves 520 provided on the mold body 500. The receiving grooves 520 form upward openings, and the portion of the support surface 510 located between the pair of receiving grooves 520 is adapted to support the main core material 110. The receiving grooves 520 are adapted to accommodate the flange inner core 210. It should be noted that when the receiving grooves 520 accommodate the flange inner core 210, they only accommodate the lower portion of the flange inner core 210, that is, only the second end 212 of the flange inner core 210. The flange inner core 210 is connected to the main core material 110 at the opening position of the receiving grooves 520.

[0057] Optionally, the width of the receiving groove 520 gradually decreases from the support surface 510 to the bottom of the groove, making the receiving groove 520 approximately V-shaped. The side wall of the receiving groove 520 near the middle of the mold body 500 gradually slopes from the end located at the bottom of the groove to the end connected to the support surface 510 towards the middle of the mold body 500. The side wall of the receiving groove 520 away from the middle of the mold body 500 can be arranged vertically, or it can gradually slope away from the middle of the mold body 500 from the end located at the bottom of the groove to the end connected to the support surface 510. The flange inner core 210 is suitable for adjusting the vertical angle within the receiving groove 520. When adjusting the vertical angle, the flange inner core 210 rotates around its bottom end as the rotation center. By adjusting the vertical angle of the flange inner core 210, different installation angle requirements can be accommodated. After adjusting the flange inner core 210 to a suitable angle, the angle between the flange inner core 210 and the main core material 110 can be fixed by casting.

[0058] The process of fabricating the web of a wind turbine blade using the web fabrication mold described above is as follows:

[0059] The outer skin 400 is laid on the sidewalls of the support surface 510 and the receiving groove 520; the main core material 110 is laid tightly against the outer skin 400 between the two receiving grooves 520; the flange inner core 210 is inserted into the receiving groove 520, so that the outer skin 400 extends from the side of the flange inner core 210 away from the main core material 110 and to the first end 211 of the flange inner core 210; the inner skin 300 is laid on the upper side of the main core material 110, so that both ends of the inner skin 300 are close to the side of the flange inner core 210 near the main core material 110 and extend to the first end 211 of the flange inner core 210; finally, casting and molding are performed to obtain the wind turbine blade web of the embodiment of the present invention.

[0060] Combination Figures 7 to 9 The present invention also provides a wind turbine blade, including a main beam 600 and the aforementioned wind turbine blade web, wherein the bonding flange 200 is bonded and fixed to the main beam 600 on the side away from the web body 100.

[0061] In some embodiments of the present invention, the main beam 600 is provided with an adhesive groove 610, the width of which is smaller than the width of the adhesive flange 200. Adhesive 620 is disposed within the adhesive groove 610, and the adhesive flange 200 is bonded and fixed to the main beam 600 by the adhesive 620. By providing the adhesive groove 610, space is provided for the adhesive 620, which helps ensure uniform thickness of the adhesive 620 and improves the firmness of the connection between the adhesive flange 200 and the main beam 600.

[0062] like Figure 7 As shown, in one alternative embodiment, the adhesive flange 200 is attached to the side wall of the main beam 600 on the side opposite to the web body 100. The adhesive groove 610 extends from the side wall of the main beam 600 into the interior of the main beam 600. The width of the adhesive groove 610 is smaller than the width of the adhesive flange 200. The adhesive flange 200 is restricted by the side wall of the main beam 600 to prevent the adhesive flange 200 from being embedded in the adhesive groove 610.

[0063] Furthermore, a limiting protrusion is provided on the side of the bonding flange 200 away from the web body 100. The limiting protrusion can be formed by a positioning plate 220 provided on the side of the flange inner core 210 of the bonding flange 200 away from the main core material 110. The width of the limiting protrusion is not greater than the width of the bonding groove 610, and the thickness of the limiting protrusion is less than the thickness of the bonding groove 610. When the bonding flange 200 is attached to the side wall of the main beam 600, the limiting protrusion is inserted into the bonding groove 610, and a gap is formed between the end of the limiting protrusion and the bottom of the bonding groove 610. The adhesive 620 is located within this gap. The cooperation between the limiting protrusion and the bonding groove 610 can limit the bonding flange 200, making installation more convenient, and at the same time increasing the connection strength between the bonding flange 200 and the main beam 600.

[0064] like Figure 8As shown, in another alternative embodiment, the side wall of the main beam 600 is provided with a positioning groove 630, and an adhesive groove 610 is provided at the bottom of the positioning groove 630. A step 640 is formed on the outer side of the adhesive groove 610. The width of the adhesive flange 200 is not greater than the width of the positioning groove 630 and not less than the width of the adhesive groove 610. The adhesive flange 200 is inserted into the positioning groove 630, and the step 640 limits the adhesive flange 200, preventing it from being inserted into the adhesive groove 610. At the same time, the positioning groove 630 serves to position the adhesive flange 200. It should be noted that the adhesive flange 200 can either abut against the inner walls of the ladder platform 640 and the positioning groove 630, or form a gap between itself and the inner walls of these two surfaces. When a gap forms between the adhesive flange 200 and the inner walls of the ladder platform 640 and the positioning groove 630, the gap can be filled with adhesive 620. In this design, there is no specific limitation on the thickness of the adhesive flange 200 and the depth of the positioning groove 630, and preferably, the thickness of the adhesive flange 200 and the depth of the positioning groove 630 are the same.

[0065] like Figure 9 As shown, in another alternative embodiment, the side wall of the main beam 600 is provided with a positioning groove 630, and an adhesive groove 610 is provided at the bottom of the positioning groove 630. Both the positioning groove 630 and the adhesive groove 610 extend along the length direction of the main beam, and a step 640 is formed on the outer side of the adhesive groove 610. The width of the adhesive flange 200 is not greater than the width of the positioning groove 630 and not less than the width of the adhesive groove 610. The adhesive flange 200 is inserted into the positioning groove 630, and the step 640 limits the adhesive flange 200. A limiting protrusion is provided on the side of the adhesive flange 200 away from the web body 100. The limiting protrusion can be formed by a positioning plate 220 provided on the side of the flange inner core 210 of the adhesive flange 200 away from the main core material 110. The width of the limiting protrusion is not greater than the width of the adhesive groove 610, and the thickness of the limiting protrusion is less than the thickness of the adhesive groove 610. The limiting protrusion is inserted into the adhesive groove 610, and a gap is formed between the end of the limiting protrusion and the bottom of the adhesive groove 610, and the adhesive 620 is located in the gap.

[0066] According to an embodiment of the present invention, the thickness of the adhesive 620 is ensured by the adhesive groove 610, thereby ensuring the firmness of the connection between the adhesive flange 200 and the main beam 600. Since the adhesive groove 610 is filled with adhesive 620, and the adhesive flange 200 uses pultruded sheet as the flange core 210, the rigidity of the connection between the main beam 600 and the adhesive flange 200 is effectively enhanced, increasing the swing stiffness of the wind turbine blades, improving the reliability of the wind turbine blades, and extending the service life of the wind turbine blades.

[0067] The present invention also provides a generator set, including the above-mentioned wind turbine blade web, or including the above-mentioned wind turbine blade.

[0068] 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 wind turbine blade web, characterized in that, The wind turbine blade web comprises: a main core material; a flange inner core, which is arranged at the end of the main core material and is arranged at an angle with the main core material, and is made of a pultruded plate; and a skin, which is wrapped outside the joint position of the main core material and the flange inner core; The wind turbine blade web is an integrated structure formed by the main core material, the flange inner core and the skin through pouring, the part of the wind turbine blade web located at the position of the main core material forms a web main body, and the part of the wind turbine blade web located at the position of the flange inner core forms a bonding flange; The skin comprises an inner skin and an outer skin, the inner skin and the outer skin are respectively arranged on both sides of the main core material and extend along the surface of the flange inner core; the skin further comprises a first reinforcing skin and a second reinforcing skin, the first reinforcing skin and the second reinforcing skin are respectively arranged on both sides of the joint position of the main core material and the flange inner core and are located on the side of the inner skin and the outer skin close to the joint of the main core material and the flange inner core, and the two ends of the first reinforcing skin and the two ends of the second reinforcing skin are arranged to respectively extend along the main core material and the flange inner core; Further comprising a positioning plate, which is arranged on the side of the bonding flange away from the web main body; the positioning plate is wrapped between the skin and the flange inner core, or the positioning plate is fixedly arranged outside the skin, the positioning plate is a plate-shaped structure matched with the side wall of the flange inner core, the width of the positioning plate is smaller than the width of the flange inner core, the length of the positioning plate is the same as or smaller than the length of the flange inner core.

2. A wind turbine blade web according to claim 1, characterised in that The first reinforcing skin and / or the second reinforcing skin are provided with two or more layers, and are sequentially stacked in the direction away from the joint position of the main core material and the flange inner core.

3. A wind turbine blade, characterised in that The wind turbine blade web comprises a main beam and the wind turbine blade web as claimed in claim 1 or 2, and the side of the bonding flange away from the web main body is bonded and fixed with the main beam.

4. The wind turbine blade of claim 3, wherein, The main beam is provided with a bonding groove, the bonding groove is provided with bonding glue, and the bonding flange is bonded and fixed with the main beam through the bonding glue.

5. A generator set characterized by, The wind turbine blade web comprises the wind turbine blade web as claimed in claim 1 or 2, or the wind fan blade as claimed in claim 3 or 4.

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