CN212389466U - Composite structure and blade - Google Patents
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- CN212389466U CN212389466U CN202020695005.1U CN202020695005U CN212389466U CN 212389466 U CN212389466 U CN 212389466U CN 202020695005 U CN202020695005 U CN 202020695005U CN 212389466 U CN212389466 U CN 212389466U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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Abstract
The utility model discloses a composite structure, blade. An embodiment of the utility model provides a composite construction body for the blade, include: the corrugated plate-shaped reinforcing structure defines a plurality of grooves which extend along a first direction and are arranged along a second direction, the second direction is intersected with the first direction, openings of two adjacent grooves are arranged in a reverse mode, and the size of the opening of each groove is larger than or equal to that of the bottom of each groove; and a plurality of core materials which are strip-shaped bodies extending along the first direction and are filled in the grooves. According to the utility model discloses composite construction body guarantees good shear strength and compressive strength when satisfying the lightweight.
Description
Technical Field
The utility model relates to a wind power generation field, concretely relates to composite structure, blade.
Background
With the continuous development of wind power technology, it is a development trend in the industry to provide a wind generating set which is stable in operation, and blades need to be light and have enough strength. Therefore, new requirements are placed on the blade structural design.
The blades of wind generating sets are usually composed of an upper shell and a lower shell which form an external outline, and the internal part of the blades is carried by using a beam-web structure. In the prior art, a shell or a web of a blade is usually a sandwich structure with a light core layer sandwiched between an inner skin and an outer skin to reduce weight.
However, the shear strength and compressive strength of the core layer in the prior art are low and do not meet the blade design requirements well.
SUMMERY OF THE UTILITY MODEL
The utility model provides a composite construction body, blade guarantee good shear strength and compressive strength when satisfying the lightweight.
In a first aspect, an embodiment of the present invention provides a composite structure body for a blade, including: the corrugated plate-shaped reinforcing structure defines a plurality of grooves which extend along a first direction and are arranged along a second direction, the second direction is intersected with the first direction, openings of two adjacent grooves are arranged in a reverse mode, and the size of the opening of each groove is larger than or equal to that of the bottom of each groove; and a plurality of core materials which are strip-shaped bodies extending along the first direction and are filled in the grooves.
According to an aspect of the embodiments of the present invention, the reinforcing structure includes: the plurality of first strip-shaped parts extend along a first direction and are arranged at intervals along a second direction; the second strip-shaped parts are arranged side by side with the first strip-shaped parts, extend along the first direction and are arranged at intervals along the second direction, and the adjacent first strip-shaped parts and the second strip-shaped parts are staggered along the second direction; and the connecting parts are positioned between the first strip-shaped parts and the second strip-shaped parts, extend along the first direction and are arranged at intervals along the second direction, and the adjacent first strip-shaped parts and the second strip-shaped parts are connected through the connecting parts.
According to the utility model discloses an aspect, reinforcing structure includes a plurality of reinforcing units of mutual concatenation, and each reinforcing unit includes at least partial first strip and/or at least partial second strip, and reinforcing unit still includes at least partial connecting portion.
According to an aspect of an embodiment of the present invention, the connecting portion includes a plurality of connecting units; the reinforcing unit comprises a first strip part or a second strip part and connecting units connected to two sides of the first strip part or the second strip part.
According to the utility model discloses an aspect, one includes first strip and another includes the second strip in two adjacent reinforcing units, and the adjacent linkage unit of two adjacent reinforcing units is folded and is established the concatenation and constitute connecting portion.
According to an aspect of the embodiments of the present invention, the first strip portion includes a plurality of first strip units, and the second strip portion includes a plurality of second strip units.
According to the utility model discloses an aspect, the reinforcing unit includes connecting portion, and connects in the first strip unit and the second strip unit of connecting portion both sides, and the adjacent first strip unit of adjacent reinforcing unit is folded and is established the concatenation and constitute first strip portion and/or adjacent second strip unit is folded and is established the concatenation and constitute second strip portion.
According to an aspect of the embodiments of the present invention, the reinforcing structure is a resin-cured fiber-reinforced structure.
According to an aspect of the embodiments of the present invention, in a cross section perpendicular to the first direction, the cross-sectional shape of the groove is trapezoidal or rectangular.
According to an aspect of the embodiment of the present invention, the opening size of the groove is 1 to 5 times the bottom size of the groove.
According to an aspect of the embodiments of the present invention, the core material is a closed-cell and light-weight core material.
According to an aspect of the embodiments of the present invention, in a cross-section perpendicular to the first direction, the cross-sectional shape of the core material is the same as the cross-sectional shape of the groove.
According to an aspect of an embodiment of the present invention, the thickness of the composite structure is the same in a direction perpendicular to the first direction and the second direction; alternatively, the composite structure has a different thickness in a direction perpendicular to the first direction and the second direction.
In a second aspect, embodiments of the present invention provide a blade, including a shell and a web, the shell and/or the web including: the first skin and the second skin are arranged oppositely side by side; one or more composite structures according to any of the above embodiments, located between a first skin and a second skin, the first skin and the second skin being connected to a reinforcing structure.
According to an aspect of the embodiments of the present invention, when the composite structure body includes the first strip portion and the second strip portion, the first skin and the second skin are connected with the first strip portion and the second strip portion.
According to an aspect of the embodiments of the present invention, the reinforcing structures of two adjacent composite structures are connected.
According to an aspect of the embodiments of the present invention, when the composite structure body includes the first strip portion and the second strip portion, the first strip portion and the second strip portion of two adjacent composite structure bodies are connected.
In a third aspect, an embodiment of the present invention provides a wind turbine generator system, including a blade according to any of the above embodiments.
According to the utility model discloses composite structure, including the corrugated plate reinforcing structure who prescribes a limit to a plurality of recesses and fill in the core of recess, the shear strength and the compressive strength of composite structure can be strengthened to corrugated plate reinforcing structure, the load that the improvement composite structure can bear to make composite structure non-deformable. The opening size of the groove is larger than or equal to the bottom size of the groove, the strength requirement is met, and meanwhile the proportion of the corrugated plate-shaped reinforcing structure in the composite structure body is reduced, so that the composite structure body is further light in weight, and a core material is easily arranged in the groove.
According to the utility model discloses blade, first covering and second covering are connected with the reinforcing structure, and the reinforcing structure provides the support for first covering and second covering to strengthen the bulk strength of blade.
Drawings
Other features, objects and advantages of the invention will become apparent from the following detailed description of non-limiting embodiments thereof, when read in conjunction with the accompanying drawings, in which like reference characters designate the same or similar parts throughout the figures thereof, and which are not to scale.
Figure 1 shows a schematic cross-sectional structure of a composite structure according to an embodiment of the present invention;
figure 2 shows a schematic cross-sectional structure of a composite structure according to another embodiment of the invention;
FIG. 3 shows a schematic cross-sectional structure of the reinforcement structure of FIG. 1;
FIG. 4 illustrates a partial cross-sectional structural view of one embodiment of the reinforcing structure of FIG. 3;
FIG. 5 illustrates a schematic partial cross-sectional structure of another embodiment of the reinforcement structure of FIG. 3;
figure 6 shows a schematic cross-sectional structure of a composite structure according to yet another embodiment of the present invention;
fig. 7 shows a schematic cross-sectional structural view of a blade according to an embodiment of the invention;
fig. 8 shows a schematic cross-sectional structure of a blade according to another embodiment of the invention.
In the figure:
10-a composite structure;
100-a reinforcing structure; 101-a groove; 102-an enhancement unit; 110-a first strip; 111-a first stripe unit; 120-a second strip; 121-second stripe units; 130-a connecting portion; 131-a connecting unit;
200-a core material;
20-a first skin;
30-second skin.
Detailed Description
The features and exemplary embodiments of various aspects of the present invention will be described in detail below, and in order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. It will be apparent to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the invention by illustrating examples of the invention.
The directional terms appearing in the following description are directions shown in the drawings and do not limit the specific structure of the present invention. In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "mounted" and "connected" are to be interpreted broadly, e.g., as either a fixed connection, a removable connection, or an integral connection; can be directly connected or indirectly connected. The specific meaning of the above terms in the present invention can be understood as the case may be, by those of ordinary skill in the art.
The blades of wind generating sets are usually composed of an upper shell and a lower shell which form an external outline, and the internal part of the blades is carried by using a beam-web structure. The shell or web of the blade is typically a sandwich structure with a lightweight core layer sandwiched between inner and outer skins to reduce weight.
In some examples, the core material is made of synthetic foam material, but the foam is basically isotropic, so that the compression strength is low, the compression modulus is low, the design requirement of the blade cannot be met well, the overall use is difficult, and the foam can be used only locally.
In other examples, balsa wood or other light wood is used as the core material of the blade. The balsa wood has anisotropy and high longitudinal compression strength. But the quality controllability of the light wood is poor, the quality discreteness is large, the light wood is easy to be affected with damp to reduce the quality and is easy to be corroded by bacteria, fungi, insects and the like, the growth period is long, and the price is high.
In order to solve the above problem, embodiments of the present invention provide a composite structure and a blade, and a detailed description is provided below for a composite structure according to an embodiment of the present invention with reference to fig. 1 to 7.
Referring to fig. 1 and 2, fig. 1 is a schematic cross-sectional structure of a composite structure according to an embodiment of the present invention, and fig. 2 is a schematic cross-sectional structure of a composite structure according to another embodiment of the present invention.
An embodiment of the present invention provides a composite structure 10 for a blade, especially for a blade of a wind turbine generator system. The embodiment of the present invention provides a composite structure 10 having a plate shape, and including a corrugated plate-shaped reinforcing structure 100 and a core material 200. The reinforcing structure 100 can enhance the compressive strength of the composite structure 10.
The reinforcing structure 100 defines a plurality of grooves 101 extending in a first direction and arranged in a second direction intersecting the first direction, specifically, the second direction intersects perpendicularly to the first direction. The openings of two adjacent grooves 101 are arranged oppositely. The reinforcing structure 100 may be a thin-walled member having a generally uniform wall thickness. The wall thickness of the reinforcing structure 100 may be, for example, 0.1 to 10 mm. The groove 101 may be formed by bending the reinforcing structure 100 in a space. The wall thickness between adjacent grooves 101 may be uniform. The reinforcing structure 100 may be a stamped or pultruded piece. The reinforcing structure 100 may be a preform and have good mechanical properties. The reinforcing structure 100 may be, for example, a preform of a hand lay-up process.
Wherein, the opening size of the groove 101 is larger than or equal to the bottom size of the groove 101. Specifically, the sectional shape of the groove 101 in a section perpendicular to the first direction is a trapezoid or a rectangle. As shown in fig. 1, in the example where the sectional shape of the groove 101 is trapezoidal, the opening size of the groove 101 is larger than the bottom size of the groove 101. As shown in fig. 2, in an example in which the sectional shape of the groove 101 is rectangular, the opening size of the groove 101 is equal to the bottom size of the groove 101.
In some embodiments, the opening dimension of groove 101 is 1 to 5 times the dimension of the bottom of groove 101. Specifically, the opening size of the groove 101 is 3 times the size of the bottom of the groove 101. The bottom of the groove 101 may have a size of 1 to 200mm, for example. The inclination of the bottom of the groove 101 may be 20 to 90. The two angles of inclination of the bottom of the groove 101 may or may not be equal. In some embodiments, groove 101 may include a chamfer, i.e., a rounded or beveled transition between the bottom and sidewalls of groove 101.
The reinforcing structure 100 may be a resin cured fiber reinforced structure 100. Specifically, the reinforcing structure 100 may include fibers and a resin filled into the fibers. The resin may coat the fibers and cure.
The fibers in the reinforcing structure 100 may be chopped or continuous various glass fibers, basalt fibers, carbon fibers, boron fibers, aramid fibers, or the like, or may be woven fabrics of the above fibers. The fibers may also contain a portion of a filler, which may be, for example, a filled powder, milled fibers, needle-like fillers, and the like.
The resin in the reinforcing structure 100 may be an unsaturated polyester resin, a vinyl ester resin, an acrylic resin, a urethane resin, an epoxy resin, a phenolic resin, nylon, or the like. The resin may be a mixed system of the above resin matrix, for example, a urethane-unsaturated polyester resin, a urethane-vinyl ester resin, a urethane-acrylic ester resin, a phenol-epoxy resin, or the like, and various thermoplastic resin systems and mixed systems thereof may be used.
In order to meet the requirement of the blade, the volume density of the reinforcing structure 100 can be 20-500 kg/m3. Further, the reinforcing structure 100 may have a bulk density of 50 to 200kg/m3. Furthermore, the reinforcing structure 100 may have a bulk density of 70 to 150kg/m3。
The number of the core material 200 may be plural. The core members 200 are bars extending in the first direction, and each core member 200 is filled in the groove 101. Specifically, the sectional shape of the core material 200 is the same as the sectional shape of the groove 101 in a section perpendicular to the first direction. In the example where the sectional shape of the groove 101 is trapezoidal, the sectional shape of the core material 200 filled in the groove 101 is trapezoidal. In the example where the sectional shape of the groove 101 is rectangular, the sectional shape of the core material 200 filled in the groove 101 is rectangular. The core material 200 may be closely filled in the groove 101 without a gap.
The core material 200 is a lightweight material, i.e. the density of the core material 200 is relatively low in many constructions and materials of the blade. The density of core material 200 is less than the density of reinforcing structure 100. Core 200 may be a foam material. Core material 200 may be a polyurethane, polyurea resin. The core material 200 may be a thermosetting high molecular polymer such as foamed phenol, foamed epoxy, foamed polyester, foamed vinyl ester, foamed acrylic ester, or the like. The foam material may also be a thermoplastic high molecular polymer, such as polystyrene, Acrylonitrile Butadiene Styrene (ABS), polyvinyl chloride, Polyester (PET), Polyimide (PMI), polymethyl methacrylate (PMMA), Polycarbonate (PC), and the like. Core material 200 may be a closed cell foam, which prevents resin from penetrating core material 200 and increasing the weight of core material 200. It will be appreciated that core material 200 may also be a lightweight cellulosic material, such as a lightweight wood material.
According to the utility model discloses composite structure 10, including the corrugated plate form reinforcing structure 100 of injecing a plurality of recesses 101 and fill in the core 200 of recess 101, corrugated plate form reinforcing structure 100 can strengthen composite structure 10's shear strength and compressive strength, improves the load that composite structure 10 can bear to make composite structure 10 non-deformable. The size of the opening of the groove 101 is greater than or equal to the size of the bottom of the groove 101, the ratio of the corrugated plate-like reinforcing structure 100 in the composite structural body 10 is reduced while satisfying the strength requirement, so that the composite structural body 10 is further lightened, and it is easy to provide the core material 200 in the groove 101.
Referring to fig. 3, fig. 3 is a schematic cross-sectional view of the reinforcing structure shown in fig. 1.
In some embodiments, the reinforcement structure 100 includes a first strip 110, a second strip 120, and a connection 130.
The plurality of first stripe portions 110 extend in a first direction and are spaced apart in a second direction. At least a portion of the plurality of first stripe portions 110 may be disposed in the same layer. Specifically, the first stripe portions 110 are all disposed in the same layer. Alternatively, the first stripe portions 110 alternately arranged are arranged in the same layer.
The plurality of second stripe portions 120 are arranged side by side with the plurality of first stripe portions 110. The plurality of second stripe portions 120 extend in the first direction and are spaced apart in the second direction. At least a portion of the plurality of second stripe portions 120 may be disposed in the same layer. Specifically, the second stripe portions 120 are all disposed in the same layer. Alternatively, the second stripe portions 120 alternately arranged are arranged in the same layer.
The adjacent first strip portions 110 and the second strip portions 120 are staggered along the second direction.
The plurality of connecting portions 130 are located between the plurality of first stripe portions 110 and the plurality of second stripe portions 120, extend along the first direction, and are arranged at intervals along the second direction, and the adjacent first stripe portions 110 and the second stripe portions 120 are connected by the connecting portions 130.
The first strip portion 110 or the second strip portion 120 may constitute a bottom of the groove 101, and the connection portion 130 may constitute a sidewall of the groove 101. The first strip 110 and/or the second strip 120 can be reused to connect the connection ends of the external structure and provide a stable support surface.
Referring to fig. 4 and 5 together, fig. 4 is a schematic partial cross-sectional view of one embodiment of the reinforcing structure shown in fig. 3, and fig. 5 is a schematic partial cross-sectional view of another embodiment of the reinforcing structure shown in fig. 3.
In some embodiments, the reinforcement structure 100 includes a plurality of reinforcement units 102 that are spliced to one another. Each reinforcement unit 102 may be formed separately and connected by bonding, connectors, or the like. Each reinforcement unit 102 includes at least a portion of the first strip 110 and/or at least a portion of the second strip 120, and the reinforcement unit 102 further includes at least a portion of the connection portion 130. The reinforcement unit 102 is relatively easy to manufacture due to its small dimension in the second direction, and is particularly suitable for use in a pultrusion process.
In some specific embodiments, as shown in fig. 4, the connection part 130 includes a plurality of connection units 131. The connection units 131 may be stacked. The connection units 131 may be bonded to each other with resin, for example.
Specifically, the enhancing unit 102 includes a first stripe portion 110 or a second stripe portion 120, and a connecting unit 131 connected to two sides of the first stripe portion 110 or the second stripe portion 120. The connection units 131 connected to both sides of the first stripe portion 110 or the second stripe portion 120 may be located at the same side of the first stripe portion 110 or the second stripe portion 120. The connection unit 131 may be connected to an edge of the first stripe portion 110 or the second stripe portion 120 in the second direction and extend away from the first stripe portion 110 or the second stripe portion 120. The reinforcement unit 102 may be, for example, a pultrusion.
Further, one of the two adjacent reinforcing units 102 includes a first strip 110 and the other includes a second strip 120, and the adjacent connecting units 131 of the two adjacent reinforcing units 102 are overlapped and spliced to form the connecting portion 130. The reinforcement units 102 comprising the first stripes 110 and the reinforcement units 102 comprising the second stripes 120 are arranged alternately in sequence in the second direction to form a reinforcement structure 100 with grooves 101.
In other embodiments, as shown in fig. 5, the first stripe 110 includes a plurality of first stripe units 111, and the second stripe 120 includes a plurality of second stripe units 121. The first strip units 111 may be stacked. The first strip units 111 may be bonded to each other with resin, for example. The second bar units 121 may be stacked. The second stripe units 121 may be bonded to each other with resin, for example.
Further, the reinforcing unit 102 includes a connecting portion 130, and a first strip unit 111 and a second strip unit 121 connected to two sides of the connecting portion 130, where adjacent first strip units 111 of adjacent reinforcing units 102 are overlapped and spliced to form a first strip portion 110 and/or adjacent second strip units 121 are overlapped and spliced to form a second strip portion 120. In the embodiment where the groove 101 is trapezoidal, the connecting portions 130 of adjacent reinforcement units 102 have inclination angles in the second direction that are one obtuse and one acute. The reinforcement units 102 are arranged in sequence along the second direction to form a reinforcement structure 100 having grooves 101.
In some embodiments, the thickness of the composite structure 10 is the same in a direction perpendicular to the first and second directions. The composite structure 10 has two surfaces that are opposite and parallel in a direction perpendicular to the first direction and the second direction.
Referring to fig. 6, fig. 6 is a schematic cross-sectional structure of a composite structure according to another embodiment of the present invention.
In other embodiments, as shown in fig. 6, the thickness of the composite structure 10 is different in a direction perpendicular to the first and second directions. The composite structure 10 has two opposite surfaces in a direction perpendicular to the first direction and the second direction, and at least one of the two surfaces may be a curved surface. The thickness of the composite structure 10 may decrease in the first direction and/or the second direction.
Referring to fig. 7 and 8, fig. 7 is a schematic cross-sectional structure of a blade according to an embodiment of the present invention, and fig. 8 is a schematic cross-sectional structure of a blade according to another embodiment of the present invention.
An embodiment of the present invention provides a blade comprising a shell and a web, the shell and/or the web comprising a first skin 20 and a second skin 30 arranged relatively side by side, and one or more composite structures. Wherein the plurality of composite structures may form one or more layers.
The first skin 20 and the second skin 30 may be layers of reinforcing fibers. The first skin 20 and the second skin 30 can increase the stiffness of the blade.
The composite structure may be the composite structure 10 according to any of the embodiments described above. The composite structure 10 is located between the first skin 20 and the second skin 30. The first skin 20 and the second skin 30 are connected with the reinforcing structure 100. A plurality of composite structures 10 are stacked between a first skin 20 and a second skin 30.
A blade according to an embodiment of the present invention, comprising a composite structure 10 according to any of the embodiments described above, thus has the beneficial effects described above with respect to composite structure 10. Also, the reinforcing structure 100 provides support for the first and second skins 20, 30 to enhance the overall strength of the blade.
In some embodiments, the shell and/or the web of the blade may have composite structures 10 of different thicknesses at the edges, for example composite structures 10 of decreasing thickness at the edges. The composite structure 10 of decreasing thickness is smoothly transition spliced to other composite structures 10.
In some embodiments, as shown in fig. 7, when the composite structure 10 includes the first strip 110 and the second strip 120, the first skin 20 and the second skin 30 are connected to the first strip 110 and the second strip 120. In some embodiments, as shown in FIG. 8, the reinforcing structures 100 of two adjacent composite structures 10 are connected. In other embodiments, as shown in fig. 8, when the composite structure 10 includes the first strip 110 and the second strip 120, the first strip 110 and the second strip 120 of two adjacent composite structures 10 are connected.
The embodiment of the utility model provides a wind generating set, the embodiment of the utility model provides a wind generating set mainly includes a tower section of thick bamboo, cabin, generator and impeller, and the cabin sets up in the top of a tower section of thick bamboo, and the generator sets up in the cabin, can be located the inside in cabin, of course, also can be located the outside in cabin. The impeller comprises a hub, and the generator is connected with the hub and fixed on a base of the engine room. The embodiment of the utility model provides a wind turbine generator system includes the blade according to any one of above-mentioned embodiment. More than two blades are respectively connected with the hub, and the blades drive the hub to rotate under the action of wind load, so that the power generation of the generator is realized. The embodiment of the utility model provides a wind generating set includes the blade according to any one of the above-mentioned embodiments, and the structural stability of blade is high and intensity is high for wind generating set can be more stable, continuous operation reliably.
In accordance with the embodiments of the present invention as set forth above, these embodiments do not set forth all of the details nor limit the invention to the specific embodiments described. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical application, to thereby enable others skilled in the art to best utilize the invention and its various embodiments with various modifications as are suited to the particular use contemplated. The present invention is limited only by the claims and their full scope and equivalents.
Claims (17)
1. A composite structure for a blade, comprising:
the corrugated plate-shaped reinforcing structure is used for limiting a plurality of grooves which extend along a first direction and are arranged along a second direction, the second direction is intersected with the first direction, openings of two adjacent grooves are arranged oppositely, and the size of the opening of each groove is larger than or equal to that of the bottom of the corresponding groove;
and a plurality of core materials which are strip-shaped bodies extending along the first direction and are filled in the grooves.
2. The composite structure of claim 1, wherein the reinforcing structure comprises:
the plurality of first strip-shaped parts extend along the first direction and are arranged at intervals along the second direction;
the second strip-shaped parts are arranged side by side with the first strip-shaped parts, extend along the first direction and are arranged at intervals along the second direction, and the adjacent first strip-shaped parts and the second strip-shaped parts are staggered along the second direction;
a plurality of connecting portions are located a plurality ofly between the first strip portion and a plurality of the second strip portion and follow first direction extension and follow the second direction interval sets up, and is adjacent first strip portion with the second strip portion passes through connecting portion connect.
3. The composite structure of claim 2, wherein the reinforcing structure comprises a plurality of reinforcing units spliced to one another, each reinforcing unit comprising at least part of the first strip and/or at least part of the second strip, and further comprising at least part of the connecting portion.
4. The composite structure of claim 3, wherein the connection portion comprises a plurality of connection units;
the reinforcing unit comprises one first strip-shaped part or one second strip-shaped part and connecting units connected to two sides of the first strip-shaped part or the second strip-shaped part.
5. The composite structure body according to claim 4, wherein one of the two adjacent reinforcing units includes the first strip portion and the other includes the second strip portion, and the adjacent connecting units of the two adjacent reinforcing units are overlapped and spliced to form the connecting portion.
6. The composite structure of claim 3, wherein the first stripe comprises a plurality of first stripe units and the second stripe comprises a plurality of second stripe units.
7. The composite structure of claim 6, wherein the reinforcing units comprise the connecting portion, and the first strip-shaped units and the second strip-shaped units connected to two sides of the connecting portion, and adjacent first strip-shaped units of adjacent reinforcing units are overlapped and spliced to form the first strip-shaped portion and/or adjacent second strip-shaped units are overlapped and spliced to form the second strip-shaped portion.
8. The composite structure of claim 1, wherein the reinforcing structure is a resin cured fiber reinforced structure.
9. The composite structure of claim 1, wherein the grooves have a trapezoidal or rectangular cross-sectional shape in a cross-section perpendicular to the first direction.
10. The composite structure of claim 1, wherein the opening dimension of the groove is 1 to 5 times the dimension of the bottom of the groove.
11. The composite structure of claim 1, wherein the core material is a closed-cell and lightweight core material.
12. The composite structure of claim 1, wherein a cross-sectional shape of the core material is the same as a cross-sectional shape of the groove in a cross-section perpendicular to the first direction.
13. The composite structure of claim 1, wherein the thickness of the composite structure is the same in a direction perpendicular to the first and second directions;
alternatively, the composite structure has a thickness that differs in a direction perpendicular to the first direction and the second direction.
14. A blade comprising a shell and a web, the shell and/or the web comprising:
the first skin and the second skin are arranged oppositely side by side;
a composite structure according to any one or more of claims 1 to 13, located between the first skin and the second skin, the first skin and the second skin being connected to the reinforcing structure.
15. The blade of claim 14, wherein when the composite structure includes a first strip and a second strip, the first skin and the second skin are connected to the first strip and the second strip.
16. The blade of claim 14, wherein the reinforcing structures of two adjacent composite structures are connected.
17. The blade of claim 16, wherein when the composite structure includes a first strip and a second strip, the first strip and the second strip of adjacent two of the composite structures are connected.
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| CN202020695005.1U CN212389466U (en) | 2020-04-29 | 2020-04-29 | Composite structure and blade |
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| CN202020695005.1U CN212389466U (en) | 2020-04-29 | 2020-04-29 | Composite structure and blade |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111486049A (en) * | 2020-04-29 | 2020-08-04 | 中材科技风电叶片股份有限公司 | Composite structure and blade |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111486049A (en) * | 2020-04-29 | 2020-08-04 | 中材科技风电叶片股份有限公司 | Composite structure and blade |
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