CN114251220A - Pultrusion plate assembly, preparation method thereof, blade and wind generating set - Google Patents
Pultrusion plate assembly, preparation method thereof, blade and wind generating set Download PDFInfo
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- CN114251220A CN114251220A CN202011002865.3A CN202011002865A CN114251220A CN 114251220 A CN114251220 A CN 114251220A CN 202011002865 A CN202011002865 A CN 202011002865A CN 114251220 A CN114251220 A CN 114251220A
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- 238000002360 preparation method Methods 0.000 title abstract description 7
- 239000000463 material Substances 0.000 claims abstract description 43
- 239000004744 fabric Substances 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims description 25
- 239000011347 resin Substances 0.000 claims description 12
- 229920005989 resin Polymers 0.000 claims description 12
- 238000004519 manufacturing process Methods 0.000 claims description 10
- 238000000429 assembly Methods 0.000 claims description 8
- 230000000712 assembly Effects 0.000 claims description 8
- 230000004888 barrier function Effects 0.000 claims description 6
- 238000005516 engineering process Methods 0.000 abstract description 2
- 238000005452 bending Methods 0.000 description 11
- 238000005520 cutting process Methods 0.000 description 3
- 229920000049 Carbon (fiber) Polymers 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 239000004917 carbon fiber Substances 0.000 description 2
- 239000013305 flexible fiber Substances 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D1/00—Wind motors with rotation axis substantially parallel to the air flow entering the rotor
- F03D1/06—Rotors
- F03D1/065—Rotors characterised by their construction elements
- F03D1/0675—Rotors characterised by their construction elements of the blades
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/40—Shaping or impregnating by compression not applied
- B29C70/50—Shaping or impregnating by compression not applied for producing articles of indefinite length, e.g. prepregs, sheet moulding compounds [SMC] or cross moulding compounds [XMC]
- B29C70/52—Pultrusion, i.e. forming and compressing by continuously pulling through a die
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/08—Blades for rotors, stators, fans, turbines or the like, e.g. screw propellers
- B29L2031/082—Blades, e.g. for helicopters
- B29L2031/085—Wind turbine blades
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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
-
- 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
- Y02E10/728—Onshore wind turbines
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Composite Materials (AREA)
- Moulding By Coating Moulds (AREA)
Abstract
The utility model provides a pultrusion plate component and preparation method, blade and wind generating set thereof, pultrusion plate component includes interconnect and the rigid section and the flexible section that set up in turn, the rigidity of rigid section is greater than the rigidity of flexible section, and the rigid section comprises pultrusion panel, and the flexible section comprises at least one of flexible fabric and preimpregnation material, and pultrusion plate component includes interconnect and the rigid section and the flexible section that set up in turn, makes pultrusion plate component can laminate with the shape of the blade shell that the preflex technology formed, has also improved pultrusion plate component's conformal nature.
Description
Technical Field
The disclosure belongs to the technical field of wind power generation, and particularly relates to a pultruded plate assembly, a preparation method thereof, a blade and a wind turbine generator system.
Background
The fan blade is one of important parts of the wind power generation complete machine, and the weight of the blade is reduced, so that the load of the complete machine can be reduced, and the cost of the complete machine is reduced. In order to reduce the weight of the blade, large fan blades are usually produced from carbon fiber materials or glass fiber materials, for example, by producing a blade girder from a pultruded plate.
In the production process of the blade, a prebending design and a twisting design are usually adopted to form a blade shell, the prebending of the blade can obviously increase the clearance between a tower and a blade tip and increase the allowable deformation of the blade, so that the required rigidity and weight of the blade are reduced, and the method is a widely applied technology. The pultrusion plate has high rigidity, and in the laying process, a gap and a warp are formed between the blade shell and the pultrusion plate due to the fact that the shapes of the blade shell and the pultrusion plate are not matched, so that the quality of the blade is affected.
Disclosure of Invention
The primary object of the present disclosure is to provide a pultruded panel assembly to enable a blade shell formed through a pre-bending process to be attached to the pultruded panel assembly during the process of forming a blade, thereby improving the quality of the blade.
Aiming at the above purpose, the present disclosure provides the following technical solutions:
in one aspect of the present disclosure, a pultruded panel assembly is provided, the pultruded panel assembly comprising interconnected and alternating rigid segments and flexible segments, the rigid segments being comprised of pultruded sheet material, the flexible segments being comprised of at least one of a flexible fabric and prepreg.
According to an exemplary embodiment of the present disclosure, the pultruded panel assembly comprises a plurality of said rigid segments having different stiffness at different locations along the length of the pultruded panel assembly.
Optionally, the rigid segment and the flexible segment each comprise a flexible base material, and the flexible base material in the rigid segment and the flexible base material in the flexible segment are integrally connected at the connection of the rigid segment and the flexible segment.
Further, the flexible binder is at least one of a flexible fabric and a prepreg.
In another exemplary embodiment of the present disclosure, an outer circumferential surface of the rigid segment is formed as a rough surface.
Further, at least one end of the pultruded panel assembly is the rigid segment, the end of the rigid segment forming a 1: 100.
In another aspect of the present disclosure, a method of making a pultruded panel assembly is provided, comprising the steps of:
taking a flexible base material, impregnating a part of the flexible base material in the length direction with resin, curing in a mould and continuously performing pultrusion to form the rigid section.
In an exemplary embodiment of the present disclosure, the flexible base material includes a portion along a length direction thereof and another portion connected to the portion, and a barrier is detachably provided at a connection between the portion and the another portion before the rigid segment is cured, and the another portion is inclined at a predetermined angle with respect to the portion.
Optionally, the predetermined angle is 90 °.
Further, the barrier is a clamping mechanism that clamps at a connection between the one part and the other part, capable of preventing resin from being impregnated from the one part into the other part of the flexible base material.
Optionally, the flexible binder is at least one of a flexible fabric and a prepreg.
Further, the preparation method further comprises the following steps:
and forming another rigid section at intervals along the length direction of the flexible base stock, wherein the flexible section is arranged between the two rigid sections.
In another exemplary embodiment of the present disclosure, the rigid section is cut into two sections in a state that the flexible sections are connected to both ends of the rigid section, respectively.
In another aspect of the present disclosure, there is provided a blade for a wind turbine generator system, the blade comprising a pultruded panel assembly as described above.
Optionally, the blade comprises a beam member formed by stacking or tiling the pultruded panel assemblies in a predetermined order.
In another aspect of the present disclosure, there is provided a wind turbine generator set comprising a blade as described above.
The pultrusion plate component, the preparation method thereof, the blade and the wind generating set provided by the disclosure have the following beneficial effects: the pultrusion plate component comprises the rigid sections and the flexible sections which are connected with each other and are alternately arranged, and the rigidity of the rigid sections is greater than that of the flexible sections, so that the pultrusion plate component can be attached to the shape of the blade shell formed by a pre-bending process, and the shape following performance of the pultrusion plate component is improved.
Drawings
The above and/or other objects and advantages of the present disclosure will become more apparent from the following description of the embodiments taken in conjunction with the accompanying drawings, in which:
FIG. 1 is a schematic structural view of a pultruded panel assembly according to an exemplary embodiment of the present disclosure.
Description of reference numerals:
101. a rigid section; 102. a flexible section.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. However, it should not be understood that the aspects of the present invention are limited to the embodiments set forth herein. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed description will be omitted.
In general, in order to avoid the motion interference between the blade and the tower in the use process, in the forming process of the blade, the pre-bending process treatment can be carried out on the preliminarily formed blade shell, so that on one hand, the local stress concentration of the blade can be reduced by the pre-bending treatment; on the other hand, the pre-bending treatment can also lead the blade to be flexible to a certain degree, the rigidity is relatively reduced, raw materials and process auxiliary materials for producing the blade are saved, and the purposes of reducing the weight of the blade and reducing the cost are achieved. In addition, because the tower clearance of the forward-inclined pre-bent blades is increased during operation, the length of the main shaft of the whole machine can be reduced, so that the load of the whole machine and the tower is reduced, and the material is saved.
However, the blade shell processed by the pre-bending process is usually partially bent or partially twisted by a predetermined angle, and the existing pultruded plate is usually a linear structure with high rigidity, so that the pultruded plate is difficult to completely conform to the blade shell processed by the pre-bending process. Accordingly, the present disclosure provides a pultruded panel assembly to solve the problem that a pultruded panel is difficult to fully conform to a blade shell.
Referring to fig. 1, the pultruded panel assembly comprises rigid segments 101 and flexible segments 102 connected to each other and arranged alternately, the rigid segments 101 may have a stiffness greater than the stiffness of the flexible segments 102. In other words, the pultruded panel assembly may comprise rigid segments 101 and flexible segments 102 arranged alternately. The rigid section 101 may be the same as a conventional pultruded fabricated article, while the flexible section 102 may be bent to a greater extent to match the blade pre-curved shape.
By arranging the pultruded panel assembly to include the rigid segment 101 and the flexible segment 102 which are connected to each other and have different rigidity, the pultruded panel assembly can be adapted to more blade shells, such as but not limited to, a blade shell with a predetermined bending or twisting angle formed through a pretreatment process, so as to improve the fitting area between the pultruded panel assembly and the blade shell, and also improve the shape following performance of the pultruded panel assembly, thereby improving the universality of the use of the pultruded panel assembly.
The pultruded panel assembly may be constructed in a form of alternating rigid segments 101 and flexible segments 102, for example, rigid segment 101-flexible segment 102-rigid segment 101, flexible segment 102-rigid segment 101-flexible segment 102, and rigid segment 101-flexible segment 102 may be extended in the length direction of the pultruded panel assembly as a unit.
Both rigid section 101 and flexible section 102 comprise a flexible base material that is a flexible fabric or prepreg, for example, but not limited to, the flexible base material may be comprised of flexible fibers, such as yarns. The prepreg may be a combination of a resin matrix and reinforcement made by impregnating a continuous fiber or fabric with the resin matrix under predetermined conditions.
The flexible base material in the rigid segment 101 and the flexible base material in the flexible segment 102 are integrally connected at the connection of the rigid segment 101 and the flexible segment 102, so that no additional connecting component is required between the flexible segment 102 and the rigid segment 101. Further, the first end of the rigid section 101 is connected to the first end of the flexible section 102, and the flexible base material in the pultruded panel assembly extends continuously from the second end of the rigid section 101 to the second end of the flexible section 102. Where the flexible base material is a yarn, each yarn in the pultruded panel assembly may be integral and extend continuously from one end of the pultruded panel assembly to the other.
By extending the flexible base material continuously from one end of the pultruded panel assembly to the other end, the pultruded panel assembly is simple in structure and has good structural strength without additional connecting members between the rigid segment 101 and the flexible segment 102, but not limited thereto. The number and gauge of yarns in the rigid section 101 and the number and gauge of yarns in the flexible section 102 may be different. Further, the yarns may be formed using fiberglass or carbon fiber.
Further, the rigid section 101 may be substantially rectangular in cross-section, for example, but not limited to, the cross-section may have a dimension of 200mm in the width direction of the pultruded plate assembly and a dimension of 5mm in the height direction of the pultruded plate assembly, which in this embodiment is a direction perpendicular to both the length direction and the width direction of the pultruded plate assembly.
Optionally, the outer peripheral surface of the rigid section 101 is formed as a rough surface to facilitate good adhesion between adjacent pultruded plate assemblies and between the pultruded plate assemblies and the blade shell during formation of the blade member (e.g., without limitation, the blade member may be a beam member), thereby improving the structural strength of the blade.
The dimension of the flexible section 102 in the length direction of the pultruded panel assembly may be determined according to the use environment, for example, but not limited to, in case of a beam member for forming a blade, the dimension of the flexible section 102 in the length direction of the pultruded panel assembly may be determined according to the length of the beam member to enable the rigid section 101 to be over-shaped.
The beam member includes a girder (located in the middle of the blade section and usually connected by one or two webs), a leading edge UD beam (located at the leading edge and connected by no web), a trailing edge UD beam (located at the trailing edge and connected by no web), a trabecula (or called auxiliary beam and auxiliary beam, located between the trailing edge and the girder and connected by a small web), and the like.
The beam part can be formed by laying or prefabricating in the blade shell, and when the beam part is a prefabricated part, the mold occupying time of the blade shell mold can be reduced, the laying is accelerated, and the quality risk is reduced.
In the using process of the pultrusion plate assembly, the pultrusion plate assembly can be used as an embedded part, a plurality of pultrusion plate assemblies can be stacked or tiled, and the flexible section 102 of the pultrusion plate assembly can be subjected to resin infiltration and curing molding.
According to an embodiment of the present disclosure, there is also provided a method of making a pultruded panel assembly, comprising the steps of:
a rigid segment 101 is produced by taking a flexible base material, impregnating a part of the flexible base material in the longitudinal direction with a resin, curing in a mold, and continuously performing pultrusion. The flexible base material is formed by at least one of flexible fabric and prepreg, and after the rigid section 101 is formed, the rest part (namely the other part) of the flexible base material can keep the original rigidity, namely, the flexible base material does not enter a glue dipping tank and does not carry out pultrusion process. The pultruded panel assembly is formed in a continuous and alternating arrangement of rigid segments 101 and flexible segments 102, the rigid segments 101 and the flexible segments 102 having different rigidity so as to be able to be used for fully conforming to the blade shell formed by the pre-bending process, thereby improving the conformability of the pultruded panel assembly.
In this embodiment, another portion of the flexible base stock may also enter the dip tank without undergoing the curing and pultrusion processes, such that the flexible segment 102 formed from the other portion has a different stiffness than the rigid segment 101.
The flexible base material includes a portion along its length and another portion connected to the portion, and a barrier may be detachably provided at the connection of the portion and the other portion of the flexible base material to prevent resin in the portion of the flexible base material from entering the other portion before pultrusion of the rigid segment 101. Further, it is also possible to incline the other portion at a predetermined angle with respect to the one portion, thereby preventing the resin in the one portion of the flexible base material from entering into the other portion. This allows the subsequently formed flexible section to be well defined and flat at the junction with the rigid section, without the flexible section 102 and the rigid section 101 interfering with each other. Alternatively, the predetermined angle may be other angles such as 30 °, 45 °, 60 °, 75 °, 90 °, and the like.
The barrier may be a clamping mechanism that can clamp at the junction between the one part and the other part, capable of preventing the resin from being impregnated from one part of the flexible web into the other part.
In the case of a pultruded panel assembly, where the rigid segments 101 and the flexible segments 102 are arranged consecutively and alternately, the ends of the pultruded panel assembly may be either the rigid segments 101 or the flexible segments 102. For example, in the case of a pultruded panel assembly having three sections, in the case of a rigid section 101 located in the middle of the pultruded panel assembly, the pultruded panel assembly formed by the present embodiment has the structural form of flexible section 102-rigid section 101-flexible section 102; the present embodiment forms a pultruded panel assembly in the form of a rigid segment 101-flexible segment 102-rigid segment 101 configuration, with rigid segment 101 at the end of the pultruded panel assembly. Obviously, the number of segments of the pultruded panel assembly is not limited and may be at least two segments, i.e. comprising one or more rigid segments 101 and one or more flexible segments 102.
In the case that the flexible segments 102 are respectively connected to the two ends of the rigid segment 101, for example, the pultruded plate assembly is in the structure of the flexible segment 102-the rigid segment 101-the flexible segment 102, and the rigid segment 101 can be cut as required, so that one pultruded plate assembly can be formed into two pultruded plate assemblies. Because the pultrusion plate forming process is complex and high in cost, one rigid section 101 with a large length is formed through one process and then cut off from the middle of the rigid section 101 as required, so that two pultrusion plate assemblies with a new rigid section 101 with a preset length are formed, and compared with two pultrusion plate assemblies formed through two pultrusion plate forming processes, the manufacturing cost is reduced. Alternatively, the cutting process in this embodiment may be performed using existing pultrusion rod cutting equipment. The cutting plane may be located at the center of the original rigid segment 101 in the longitudinal direction, or may be non-central.
In this embodiment, the cut surface may form 1: 100 to avoid stress concentrations and to extend the life of the rigid section 101.
Further, the preparation method of the pultruded panel assembly further comprises the step of forming another rigid segment 101 at intervals along the length direction of the flexible base material, wherein the flexible segment 102 is arranged between the two rigid segments 101, and the pultruded panel assembly formed in the embodiment is in the structural form of rigid segment 101-flexible segment 102-rigid segment 101.
The pultrusion plate component adopts the continuous and alternate arrangement mode of the rigid sections 101 and the flexible sections 102 to form a local flexible structure, so that the shape following performance of the pultrusion plate component is improved, and the pultrusion plate component can be suitable for blades with various shapes, such as but not limited to blades formed by a pre-bending process. In the forming process of the pultruded plate assembly, only one part of the pultruded plate assembly in the length direction is soaked with resin and is solidified after pultrusion, so that the rigid section 101 and the flexible section 102 with different rigidities are formed, and the shape following performance of the pultruded plate assembly is improved.
In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present application.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating 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 the present disclosure, "a plurality" means two or more unless otherwise specified.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present disclosure can be understood in specific instances by those of ordinary skill in the art.
The described features, structures, or characteristics of the disclosure may be combined in any suitable manner in one or more embodiments. In the above description, numerous specific details are provided to give a thorough understanding of embodiments of the disclosure. One skilled in the relevant art will recognize, however, that the subject matter of the present disclosure can be practiced without one or more of the specific details, or with other methods, components, materials, and so forth. In other instances, well-known structures, materials, or operations are not shown or described in detail to avoid obscuring aspects of the disclosure.
Claims (16)
1. A pultruded panel assembly, characterized in that it comprises interconnected and alternating rigid segments (101) and flexible segments (102), said rigid segments (101) being constituted by pultruded sheet material and said flexible segments (102) being constituted by at least one of flexible fabric and prepreg.
2. The pultruded panel assembly according to claim 1, wherein said pultruded panel assembly comprises a plurality of said rigid segments (101), said rigid segments (101) having different stiffness at different locations along the length of said pultruded panel assembly.
3. The pultruded panel assembly according to claim 1, wherein the rigid segment (101) and the flexible segment (102) each comprise a flexible base material, the flexible base material in the rigid segment (101) and the flexible base material in the flexible segment (102) being integrally connected at the connection of the rigid segment (101) and the flexible segment (102).
4. The pultruded panel assembly of claim 3, wherein the flexible base material is at least one of a flexible fabric and a prepreg.
5. The pultruded panel assembly according to claim 1, wherein the outer circumferential surface of the rigid segment (101) is formed as a rough surface.
6. The pultruded panel assembly according to claim 1, wherein at least one end of said pultruded panel assembly is said rigid segment (101), the end of said rigid segment (101) forming a 1: 100.
7. A method of making a pultruded panel assembly comprising the steps of:
a rigid segment (101) is produced by taking a flexible base material, impregnating a part of the flexible base material in the longitudinal direction with a resin, curing in a mold, and continuously performing pultrusion.
8. The method of manufacturing a pultruded panel assembly according to claim 7, wherein said flexible base material comprises a portion along its length and another portion connected to said portion, wherein a barrier is removably provided at the connection between said portion and said another portion is inclined at a predetermined angle with respect to said one portion prior to pultrusion of said rigid segment (101).
9. The method of making a pultruded panel assembly according to claim 8, wherein the predetermined angle is 90 °.
10. The method of making a pultruded panel assembly according to claim 9, wherein the barrier is a clamping mechanism that clamps at a connection between the one portion and the another portion capable of preventing resin from being impregnated from the one portion of the flexible base material into the another portion.
11. The method of making a pultruded panel assembly according to any one of claims 7-10, wherein the flexible base material is at least one of a flexible fabric and a prepreg.
12. The method of preparing a pultruded panel assembly according to claim 7, wherein the method of preparing further comprises:
and another rigid section (101) is formed at intervals along the length direction of the flexible base stock, and a flexible section (102) is arranged between the two rigid sections (101).
13. The method of manufacturing a pultruded panel assembly according to claim 12, wherein said rigid segment (101) is cut into two segments with said flexible segments (102) attached to each end of said rigid segment (101).
14. A blade for a wind park according to any of claims 1-6, wherein the blade comprises a pultruded panel assembly according to any of the claims 1-6.
15. The blade of claim 11 wherein said blade includes a beam member formed by stacking or laying said pultruded panel assemblies in a predetermined order.
16. A wind park according to claim 14 or 15, wherein the wind park comprises a blade according to claim 14 or 15.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011002865.3A CN114251220A (en) | 2020-09-22 | 2020-09-22 | Pultrusion plate assembly, preparation method thereof, blade and wind generating set |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011002865.3A CN114251220A (en) | 2020-09-22 | 2020-09-22 | Pultrusion plate assembly, preparation method thereof, blade and wind generating set |
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| CN114251220A true CN114251220A (en) | 2022-03-29 |
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