Core material structure for a wind turbine blade
By setting a combination of flow guide grooves and reinforcements on the core material of wind turbine blades, the problems of uneven resin flow and strength loss are solved, achieving uniform resin distribution and strength compensation, and reducing whitening and material waste.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SANY (BAYANNUR) WIND POWER EQUIP CO LTD
- Filing Date
- 2025-07-21
- Publication Date
- 2026-06-09
Smart Images
Figure CN224334764U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of wind turbine blade technology, and more particularly to a core material structure for a wind turbine blade. Background Technology
[0002] Wind turbine blades are one of the important components of wind turbine generators. In the process of wind turbine blade forming, a vacuum injection molding process is used to lay the blade core material in the mold and inject resin into the mold.
[0003] In existing technologies, to accelerate resin flow on the blade core material, several grooves are formed on the blade core material to guide the resin flow. A mesh fabric is also laid on the blade core material to compensate for any strength loss.
[0004] However, existing wind turbine blades are prone to whitening during the injection process. Utility Model Content
[0005] This application provides a core material structure for wind turbine blades that reduces the possibility of whitening during the filling process while ensuring the strength of the core material itself.
[0006] The wind turbine blade core material structure provided in this application includes a core material body and a plurality of first reinforcing members. The core material body has a plurality of first guide grooves, which are arranged sequentially at intervals along a first direction, and each first guide groove extends to both sides of the core material body along a second direction.
[0007] Multiple first reinforcement members are spaced apart on the side of the core material body with the first flow channel, and the multiple first reinforcement members are spaced apart sequentially along the second direction, and the first reinforcement members extend along the first direction.
[0008] Each first guide groove is located between the two ends of the extension direction of the first reinforcement member, and there is an angle between the first direction and the second direction.
[0009] In one possible implementation, the core material structure of the wind turbine blade provided in this application has a spacing between two adjacent first reinforcement members that is greater than or equal to 300 mm and less than or equal to 600 mm.
[0010] In one possible implementation, the core material structure of the wind turbine blade provided in this application has a first reinforcement member with a length of 75 mm or more and less than or equal to 85 mm along the second direction.
[0011] In one possible implementation, the core material structure of the wind turbine blade provided in this application has a first reinforcing member extending to both sides of the core material body.
[0012] In one possible implementation, the core material structure of the wind turbine blade provided in this application has each first reinforcement component evenly spaced.
[0013] In one possible implementation, the core material structure of the wind turbine blade provided in this application has each first guide groove evenly spaced, with the interval between two adjacent first guide grooves being greater than or equal to 30 mm and less than or equal to 50 mm.
[0014] In one possible implementation, the core material structure of the wind turbine blade provided in this application has a first guide groove with a length greater than or equal to 1.9 mm and less than or equal to 2.1 mm along a first direction.
[0015] In one possible implementation, the core material structure of the wind turbine blade provided in this application has a plurality of second guide grooves on the side of the core material body facing away from the first guide groove. The plurality of second guide grooves are arranged sequentially at intervals along the first direction, and the second guide grooves extend to both sides of the core material body along the second direction.
[0016] In one possible implementation, the core material structure of the wind turbine blade provided in this application further includes a plurality of second reinforcement members, which are spaced apart on the side of the core material body having the second guide groove.
[0017] Multiple second reinforcement members are arranged sequentially at intervals along the second direction, and the second reinforcement members extend along the first direction. Each second guide groove is located between the two ends of the extension direction of the second reinforcement member.
[0018] In one possible implementation, the core material structure of the wind turbine blade provided in this application has an angle between the groove depth direction of the second guide groove and the third direction.
[0019] The first direction is the width direction of the core material body, the second direction is the length direction of the core material body, and the third direction is the thickness direction of the core material body.
[0020] The wind turbine blade core material structure provided in this application comprises a core material body and multiple first reinforcing members. The core material body has multiple first guide grooves, which are sequentially spaced along a first direction and extend to both sides of the core material body along a second direction. Multiple first reinforcing members are spaced apart on the side of the core material body with the first guide grooves, and are sequentially spaced along the second direction, extending along the first direction. Each first guide groove is located between the two ends of the extending direction of the first reinforcing member, and there is an angle between the first and second directions. While ensuring the strength of the core material body, the first reinforcing members do not completely cover the first guide grooves, allowing the resin to fully impregnate the first guide grooves, improving the uniformity of resin distribution within the core material body, thereby reducing localized resin deficiency areas and lowering the possibility of whitening during wind turbine blade injection. Attached Figure Description
[0021] To more clearly illustrate the technical solutions in the embodiments of this application 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 this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0022] Figure 1 A schematic diagram of the core material structure of the wind turbine blade provided in the embodiments of this application. Figure 1 ;
[0023] Figure 2 for Figure 1 Schematic diagram of the core material body;
[0024] Figure 3 for Figure 1 Another structural diagram;
[0025] Figure 4 A schematic diagram of the core material structure of the wind turbine blade provided in the embodiments of this application. Figure 2 ;
[0026] Figure 5 for Figure 4 A schematic diagram of the core material body.
[0027] Explanation of reference numerals in the attached figures:
[0028] 100-core material body;
[0029] 110 - First guide channel; 120 - Second guide channel; 130 - Through hole;
[0030] 200 - First reinforcement piece;
[0031] 300 - Second reinforcement.
[0032] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation
[0033] First, those skilled in the art should understand that these embodiments are merely for explaining the technical principles of this application and are not intended to limit the scope of protection of this application. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.
[0034] Secondly, it should be noted that, in the description of this application, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, an indirect connection through an intermediate medium, or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0035] Furthermore, it should be noted that in the description of this application, the terms "upper," "lower," "front," "back," "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 used only for the convenience of describing this application 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 this application.
[0036] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.
[0037] As shown in the background section, in the prior art, several grooves are formed on the blade core material to guide the resin flow. A mesh fabric is also laid on the blade core material to compensate for the strength loss of the blade core material.
[0038] However, the mesh fabric covering the entire blade core material creates material redundancy. Furthermore, the high porosity of the mesh means that if the resin flow rate is too fast or the pressure is insufficient, the resin may preferentially flow through the mesh pores instead of fully wetting the core material. This results in uneven resin flow on the core material, creating localized resin-deficient areas. These areas, lacking resin coating, expose the core material, leading to increased light scattering and a visually "whitened" appearance.
[0039] Based on this, the wind turbine blade core material structure provided in this application comprises a core material body and multiple first reinforcing members. The core material body has multiple first guide grooves, which are sequentially spaced along a first direction and extend to both sides of the core material body along a second direction. Multiple first reinforcing members are spaced apart on the side of the core material body with the first guide grooves, and are sequentially spaced along the second direction, extending along the first direction. Each first guide groove is located between the two ends of the extending direction of the first reinforcing member, and there is an angle between the first and second directions. While ensuring the strength of the core material body, the first reinforcing members do not completely cover the first guide grooves, allowing the resin to fully impregnate the first guide grooves, improving the uniformity of resin distribution within the core material body, thereby reducing localized resin deficiency areas and lowering the possibility of whitening during wind turbine blade injection.
[0040] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments of this application will be described in more detail below with reference to the accompanying drawings. In the drawings, the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The described embodiments are some, but not all, of the embodiments of this application. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.
[0041] Reference Figure 1 and Figure 2 As shown, the core material structure of the wind turbine blade provided in this application includes a core material body 100 and a plurality of first reinforcing members 200. The core material body 100 has a plurality of first guide grooves 110, which are arranged sequentially at intervals along a first direction, and each first guide groove 110 extends to both sides of the core material body 100 along a second direction.
[0042] Multiple first reinforcement members 200 are spaced apart on the side of the core material body 100 with the first guide groove 110. The multiple first reinforcement members 200 are spaced apart in sequence along the second direction, and the first reinforcement members 200 extend along the first direction.
[0043] Each first guide groove 110 is located between the two ends of the extension direction of the first reinforcement 200, and there is an angle between the first direction and the second direction.
[0044] Specifically, by opening multiple openings along the first direction on the core material body 100 ( Figure 1The first guide grooves 110, arranged at intervals in the X direction (indicated by the middle arrow), form a low-resistance channel, which can increase the flow rate of the resin, thereby improving the injection efficiency and shortening the injection time.
[0045] The cured resin forms an "anchoring structure" in the first guide groove 110, which can improve the shear strength of the interface between the resin and the core material body 100 and improve the reliability of the wind turbine blades.
[0046] It should be noted that each of the first guide channels 110 is along the second direction ( Figure 1 The first guide groove 110 extends to the edges of the core material body 100 (in the Y direction indicated by the middle arrow) to both sides of the core material body 100, that is, the first guide groove 110 extends to the edges of the core material body 100, so that the resin can flow smoothly out of the edges of the core material body 100, preventing resin stagnation and ensuring that the core material body 100 is completely wetted.
[0047] The first guide groove 110 can also serve as an exhaust channel. The first guide groove 110 extends to the edge of the core material body 100, which can prevent the gas inside the core material body 100 from accumulating at the end of the first guide groove 110 and avoid forming bubbles.
[0048] Understandably, since the first guide groove 110 interrupts the continuity of the core material body 100, stress is concentrated at the edge of the groove opening of the first guide groove 110.
[0049] By spaced apart on one side of the core material body 100 having a first flow channel 110, multiple first reinforcement members 200 are arranged sequentially and spaced apart along a second direction (Y direction), and the first reinforcement members 200 extend along a first direction (X direction). Since the multiple first flow channels 110 are arranged sequentially and spaced apart along the first direction, each first flow channel 110 is located between the two ends of the extension direction of the first reinforcement member 200, and there is an angle between the first direction and the second direction, multiple first flow channels 110 are connected by the same first reinforcement member 200. The first reinforcement member 200 can disperse the stress concentrated at the edge of the groove of the first flow channel 110, compensate for the strength loss of the core material body 100, and ensure the strength of the core material body 100.
[0050] For example, the first reinforcement member 200 can be a mesh fiberglass cloth or other reinforcement members, and the embodiments of this application do not impose too many restrictions on it.
[0051] In specific implementations, the angle between the first direction and the second direction can be 60°, 70°, 80° or 90°, or other angles. This application does not impose too many restrictions on this.
[0052] It should be noted that, since multiple first reinforcement members 200 are spaced apart on the core material body 100, the first reinforcement members 200 do not completely cover the first guide groove 110. The resin can fully wet the first guide groove 110, which improves the uniformity of resin distribution in the core material body 100, thereby reducing the local resin deficiency area and reducing the possibility of whitening during wind turbine blade injection.
[0053] In some embodiments, refer to Figure 3 As shown, the interval between two adjacent first reinforcement members 200 is greater than or equal to 300 mm and less than or equal to 600 mm.
[0054] Specifically, the interval between two adjacent first reinforcement members 200 is Figure 3 The length of L1. The spacing between two adjacent first reinforcement members 200 is greater than or equal to 300 mm, which ensures the strength of the core material body 100 while allowing the resin to fully impregnate the first guide groove 110. This improves the uniformity of resin distribution within the core material body 100, thereby reducing local resin deficiency areas and lowering the possibility of whitening during wind turbine blade injection.
[0055] The spacing between two adjacent first reinforcement members 200 is greater than or equal to 300 mm, which can also prevent the first reinforcement members 200 from being too dense and causing redundancy of reinforcing material. While ensuring strength, it reduces the amount of first reinforcement members 200 used and lowers costs.
[0056] It should be noted that the interval between two adjacent first reinforcement members 200 is less than or equal to 600 mm to compensate for the strength loss of the core material body 100 and ensure that the strength of the core material body 100 can meet the strength requirements.
[0057] In specific implementation, the interval between two adjacent first reinforcement members 200 can be 300 mm, 350 mm, 400 mm, 450 mm, 500 mm, 530 mm, 550 mm or 600 mm, or any length between 300 mm and 600 mm. This application embodiment does not impose too many restrictions on this.
[0058] In some embodiments, refer to Figure 3 As shown, the length of the first reinforcement member 200 along the second direction is greater than or equal to 75 mm and less than or equal to 85 mm.
[0059] Specifically, the length of the first reinforcing member 200 along the second direction is Figure 3The length of L2 is the width of the first reinforcing member 200. It should be noted that if the width of the first reinforcing member 200 is too small, its reinforcing effect is limited. If the width of the first reinforcing member 200 is greater than or equal to 75 mm, it can effectively resist the expansion of the first guide groove 110, prevent stress concentration, and ensure the strength of the core material body 100.
[0060] It should also be noted that an excessively wide first reinforcement member 200 may exceed the actual reinforcement requirements, resulting in unnecessary material consumption. A width of 85 mm or less for the first reinforcement member 200 ensures the strength of the core material body 100 while avoiding material waste and reducing costs.
[0061] For example, the width of the first reinforcement member 200 can be 75 mm, 80 mm or 85 mm, or any length between 75 mm and 85 mm. This application embodiment does not impose too many restrictions on this.
[0062] In practical implementation, multiple rolls of 80mm wide mesh fabric can be placed on the rollers of the meshing machine, with a spacing of 530mm between adjacent rolls. The mesh fabric is fixed using limiting plates or clamps. Then, the core material body 100 is placed on the meshing machine, and the machine is started to bond the mesh fabric to the core material body 100. Exemplarily, the number of mesh fabric rolls placed on the rollers simultaneously can be 2 or 3 rolls, or more than 3 rolls. The number of mesh fabric rolls can be determined based on the length of the rollers and the length of the core material body 100; this embodiment does not impose excessive limitations on this. It should be noted that the meshing machine is a technology well-known to those skilled in the art and will not be described in detail further.
[0063] In some embodiments, refer to Figure 1 and Figure 3 As shown, the first reinforcement member 200 extends to both sides of the core material body 100.
[0064] It should be noted that, due to the multiple first reinforcement members 200 along the second direction ( Figure 1 or Figure 3 The reinforcement members 200 are arranged sequentially at intervals along the first direction (Y direction indicated by the middle arrow). Figure 1 or Figure 3 Extending in the X direction (as indicated by the middle arrow), the first reinforcement 200 extends to both sides of the core material body 100, that is, (along the second direction) the edge of the first reinforcement 200 is flush with the edge of the core material body 100.
[0065] In this way, the first reinforcement member 200 and the core material body 100 form a continuous whole, which can achieve more complete stress transmission, make the stress distribution more uniform, and ensure the strength of the core material body 100.
[0066] In some embodiments, refer to Figure 1 and Figure 3 As shown, each of the first reinforcement components 200 is evenly spaced.
[0067] It should be noted that the equal spacing of each first reinforcement component 200 can ensure that the reinforcement area is evenly distributed, thereby evenly dispersing stress, avoiding stress concentration, and ensuring the strength of the core material body 100.
[0068] In some embodiments, refer to Figure 2 and Figure 3 As shown, each of the first guide channels 110 is evenly spaced, and the interval between two adjacent first guide channels 110 is greater than or equal to 30 mm and less than or equal to 50 mm.
[0069] Understandably, the equally spaced first guide channels 110 form a regular resin flow path, allowing the resin to be evenly filled onto the core material body 100 during the pouring process, reducing air bubbles or unwetted dead zones. Furthermore, the resin exhibits a consistent curing shrinkage rate within the equally spaced first guide channels 110, reducing the possibility of interlayer delamination caused by uneven internal stress.
[0070] The equally spaced first guide grooves 110 can also ensure that the stress is evenly distributed on the core material body 100, preventing certain areas from experiencing a sudden drop in strength due to excessively dense first guide grooves 110, or from becoming stress concentration points due to excessively sparse first guide grooves 110.
[0071] It should be noted that the interval between two adjacent first guide channels 110 is Figure 3 The length of L3. The interval between two adjacent first guide grooves 110 is greater than or equal to 30 mm to prevent the first guide grooves 110 from being too dense, which can ensure the rigidity and load-bearing capacity of the core material body 100.
[0072] The interval between two adjacent first guide grooves 110 is less than or equal to 50 mm, which can provide sufficient flow channels for the resin to fully impregnate the core material body 100.
[0073] For example, the interval between two adjacent first guide grooves 110 can be 30 mm, 35 mm, 40 mm, 45 mm or 50 mm, or any length between 30 mm and 50 mm. This application embodiment does not impose too many restrictions on this.
[0074] In some embodiments, refer to Figure 2 and Figure 3 As shown, the length of the first guide groove 110 along the first direction is greater than or equal to 1.9 mm and less than or equal to 2.1 mm.
[0075] Specifically, the length of the first guide channel 110 along the first direction is Figure 2 The length of L4 is the same as the width of the first guide channel 110.
[0076] It should be noted that if the first guide groove 110 is too narrow, it will hinder the flow of resin due to capillary effect. The width of the first guide groove 110 is greater than or equal to 1.9 mm, which can ensure that the resin flows smoothly in the first guide groove 110 so that the resin can fully wet the first guide groove 110.
[0077] The width of the first guide groove 110 is less than or equal to 2.1 mm, which can prevent the resin from forming a "flood zone" in the first guide groove 110 and avoid uneven wetting of the first guide groove 110. It should also be noted that the width of the first guide groove 110 is less than or equal to 2.1 mm, which can prevent the first guide groove 110 from weakening the bending stiffness of the core material body 100.
[0078] For example, the width of the first guide groove 110 can be 1.9 mm, 2 mm or 2.1 mm, and the length can be any length from 1.9 mm to 2.1 mm. This application embodiment does not impose too many restrictions on this.
[0079] In some embodiments, refer to Figure 4 and Figure 5 As shown, the core material body 100 also has a plurality of second guide channels 120 on the side opposite to the first guide channel 110. The plurality of second guide channels 120 are arranged sequentially at intervals along the first direction, and the second guide channels 120 extend to both sides of the core material body 100 along the second direction.
[0080] Specifically, by providing a plurality of first guide channels 110 and a plurality of second guide channels 120 on opposite sides of the core material body 100, the first guide channels 110 and the second guide channels 120 can provide resin flow paths on opposite sides of the core material body 100, thereby increasing the resin flow rate and shortening the resin infusion time.
[0081] This also enables a dual-sided reinforcement mechanism, improving the bending and torsional stiffness of wind turbine blades.
[0082] In some embodiments, refer to Figure 4 As shown, the core material structure of the wind turbine blade also includes a plurality of second reinforcement members 300, which are spaced apart on the side of the core material body 100 having the second guide groove 120.
[0083] Multiple second reinforcement members 300 are arranged sequentially at intervals along the second direction, and the second reinforcement members 300 extend along the first direction. Each second guide groove 120 is located between the two ends of the extension direction of the second reinforcement member 300.
[0084] Understandably, since the second guide groove 120 interrupts the continuity of the core material body 100, stress is concentrated at the edge of the groove opening of the second guide groove 120.
[0085] By providing a plurality of second reinforcement members 300 at intervals on one side of the core material body 100 having a second flow channel 120, the plurality of second reinforcement members 300 are arranged along a second direction ( Figure 4 The second reinforcement member 300 is arranged at intervals along the first direction (in the Y direction indicated by the middle arrow), and is positioned sequentially at intervals. Figure 4 Extending in the X direction (indicated by the middle arrow). Since multiple second guide channels 120 are arranged sequentially at intervals along the first direction (X direction), and each second guide channel 120 is located between the two ends of the extension direction of the second reinforcement 300, and since there is an angle between the first direction and the second direction, multiple second guide channels 120 are connected by the same second reinforcement 300. The second reinforcement 300 can disperse the stress concentrated at the edge of the groove of the second guide channel 120, compensate for the strength loss of the core material body 100, and ensure the strength of the core material body 100.
[0086] For example, the second reinforcement 300 can be a mesh fiberglass cloth or other reinforcement components, and the embodiments of this application do not impose too many restrictions on it.
[0087] In some embodiments, refer to Figure 5 As shown, the depth direction of the second guide channel 120 has an angle with the third direction.
[0088] The first direction is the width direction of the core material body 100, the second direction is the length direction of the core material body 100, and the third direction is the thickness direction of the core material body 100.
[0089] It should be noted that the depth direction of the second guide channel 120 is opposite to the third direction ( Figure 5 The angle between the Z-direction indicated by the middle arrow, i.e. Figure 5 The middle arrow indicates angle α.
[0090] Since the third direction is the thickness direction of the core material body 100, the depth direction of the second guide channel 120 forms an angle with the thickness direction of the core material body 100, that is, the second guide channel 120 is inclined. This facilitates the natural flow of resin, reduces the generation of trapped air during injection, and thus reduces bubbles and voids. In this way, the anchoring force between the cured resin and the core material body 100 can also be increased, improving the strength of the wind turbine blade.
[0091] It should be noted that the bending stiffness of the core material body 100 mainly depends on the integrity of its length direction. The first direction is the width direction of the core material body 100, and the second direction is the length direction of the core material body 100. Each first guide groove 110 extends along the second direction, that is, each first guide groove 110 extends along the length direction of the core material body 100. This can prevent the first guide groove 110 from interrupting the continuity of the length direction of the core material body 100 and reduce the impact of the first guide groove 110 on the bending performance of the core material body 100.
[0092] The first guide groove 110 extends along the length direction of the core material body 100, interrupting the continuity of the width direction of the core material body 100. In some embodiments, the first direction and the second direction are perpendicular to each other, and a plurality of first reinforcement members 200 are arranged sequentially at intervals along the second direction. The vertically arranged first reinforcement members 200 can provide width direction reinforcement for the core material body 100, ensuring the strength of the core material body 100 in the width direction.
[0093] In some embodiments, refer to Figure 4 As shown, the core material body 100 also has a plurality of through holes 130. The through holes 130 can serve as additional channels for resin flow, reducing the flow resistance of resin in the core material area and reducing dry spots or insufficient wetting caused by resin retention.
[0094] Those skilled in the art will understand that the core material structure of the wind turbine blade provided in this application comprises a core material body 100 and a plurality of first reinforcing members 200. The core material body 100 has a plurality of first guide grooves 110, which are arranged at intervals along a first direction. Each first guide groove 110 extends to both sides of the core material body 100 along a second direction. The plurality of first reinforcing members 200 are arranged at intervals on the side of the core material body 100 with the first guide grooves 110, and are arranged at intervals along the second direction. The first reinforcing members 200 extend along the first direction. Each first guide groove 110 is located between the two ends of the extending direction of the first reinforcing member 200, and there is an angle between the first direction and the second direction. While ensuring the strength of the core material body 100, the first reinforcement 200 does not completely cover the first guide groove 110, so that the resin can fully wet the first guide groove 110, which improves the uniformity of resin distribution in the core material body 100, thereby reducing the local resin deficiency area and reducing the possibility of whitening during wind turbine blade injection.
[0095] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. 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.
[0096] It is understood that the various numerical designations used in the embodiments of this application are merely for descriptive convenience and are not intended to limit the scope of the embodiments of this application.
[0097] The technical solutions of this application have been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of this application is obviously not limited to these specific embodiments. Without departing from the principles of this application, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the scope of protection of this application.
Claims
1. A core material structure for a wind turbine blade, characterized in that, include: The core material body has a plurality of first flow channels, which are arranged at intervals along a first direction, and each first flow channel extends to both sides of the core material body along a second direction. Multiple first reinforcement members are spaced apart on the side of the core material body having the first flow channel, and the multiple first reinforcement members are spaced apart sequentially along the second direction, and the first reinforcement members extend along the first direction; Each of the first guide channels is located between the two ends of the extension direction of the first reinforcement member, and there is an angle between the first direction and the second direction.
2. The core material structure of the wind turbine blade according to claim 1, characterized in that, The interval between two adjacent first reinforcement members is greater than or equal to 300 mm and less than or equal to 600 mm.
3. The core material structure of the wind turbine blade according to claim 1, characterized in that, The length of the first reinforcement member along the second direction is greater than or equal to 75 mm and less than or equal to 85 mm.
4. The core material structure of the wind turbine blade according to claim 1, characterized in that, The first reinforcement extends to both sides of the core material body.
5. The core material structure of the wind turbine blade according to claim 1, characterized in that, Each of the first reinforcement components is evenly spaced.
6. The core material structure of the wind turbine blade according to any one of claims 1 to 5, characterized in that, Each of the first guide channels is evenly spaced, and the interval between two adjacent first guide channels is greater than or equal to 30 mm and less than or equal to 50 mm.
7. The core material structure of the wind turbine blade according to claim 6, characterized in that, The length of the first guide groove along the first direction is greater than or equal to 1.9 mm and less than or equal to 2.1 mm.
8. The core material structure of the wind turbine blade according to any one of claims 1 to 5, characterized in that, The core material body also has a plurality of second flow channels on the side opposite to the first flow channel. The plurality of second flow channels are arranged at intervals along the first direction and extend to both sides of the core material body along the second direction.
9. The core material structure of the wind turbine blade according to claim 8, characterized in that, It also includes a plurality of second reinforcing members, which are spaced apart on the side of the core body having the second flow channel; Multiple second reinforcing members are arranged sequentially at intervals along the second direction, the second reinforcing members extend along the first direction, and each second guide groove is located between the two ends of the extension direction of the second reinforcing member.
10. The core material structure of the wind turbine blade according to claim 9, characterized in that, The second guide channel has an angle between its depth direction and a third direction; The first direction is the width direction of the core material body, the second direction is the length direction of the core material body, and the third direction is the thickness direction of the core material body.