CN109882364B - Carbon fiber wind power blade crossbeam and preparation method thereof - Google Patents
Carbon fiber wind power blade crossbeam and preparation method thereof Download PDFInfo
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- CN109882364B CN109882364B CN201910234696.7A CN201910234696A CN109882364B CN 109882364 B CN109882364 B CN 109882364B CN 201910234696 A CN201910234696 A CN 201910234696A CN 109882364 B CN109882364 B CN 109882364B
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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
Abstract
The invention discloses a carbon fiber wind power blade girder which comprises girder main body units of a plurality of carbon fiber wind power blades and filling strips for connecting the girder main body units, wherein the girder main body units and the filling strips are connected in a vacuum infusion forming mode after being spliced; the invention further comprises a preparation method of the carbon fiber wind power blade girder. According to the invention, the wind power blade girder is pultruded according to a specific contour and is provided with the corresponding filling strips, so that no splicing cavity is generated no matter a single block is used or a plurality of blocks are spliced, and the defect of rich resin in the product is further avoided.
Description
Technical Field
The invention relates to the technical field of wind power blades, in particular to a carbon fiber wind power blade crossbeam and a preparation method thereof.
Background
The traditional wind power blade forming method is in series connection forming, the forming time of a certain region of a blade directly determines the forming time of the whole blade, if a serious defect occurs in a certain region, the delay of the whole wind power blade is caused, the production progress is influenced, and in order to reduce the risk caused by the forming defect in the wind power blade forming process and improve the production efficiency, the structure and the preparation method of a wind power blade crossbeam need to be improved and designed.
At present, although the wind turbine blade with a strip splicing structure is disclosed in the prior art, the structure and the process of the existing wind turbine blade do not consider that the outer surface of the wind turbine blade is an irregular curve (such as the structural form shown in figure 4), a cavity is generated during strip splicing, and the defect of rich resin is generated after vacuum infusion molding, and the defect that the defect of rich resin is generated and is not easy to find and repair, so that the product quality is influenced.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a carbon fiber wind power blade crossbeam and a preparation method thereof.
In order to solve the technical problems, the technical scheme provided by the invention is as follows: the utility model provides a carbon fiber wind-powered electricity generation blade girder, includes girder main part unit and the filler strip that is used for connecting of a plurality of carbon fiber wind-powered electricity generation blades girder main part unit, adopt the fashioned mode of vacuum infusion to connect after the concatenation between girder main part unit and the filler strip.
As a further improvement of the above technical solution: the cross section of each girder main body unit is of an arc-shaped carbon fiber structure, one end of each girder main body unit is of an arc-shaped structure protruding outwards, and the other end of each girder main body unit is of an arc-shaped structure protruding inwards.
Further, the cross section of the filling strip is of a circular structure.
Furthermore, seamless splicing can be realized between the girder main body unit and the filling strips.
Furthermore, the filling strips and the girder main body units are respectively manufactured by adopting a pultrusion process, so that the molding efficiency is high.
A preparation method of a carbon fiber wind power blade girder adopts the carbon fiber wind power blade girder structure, and comprises the following steps:
1) forming a plurality of girder main body units and filling strips through a specific die and a pultrusion process respectively;
2) and splicing the girder main body unit and the filling strips according to the process parameters, and performing vacuum infusion.
As a further improvement of the above technical solution: the splicing process in step 2) may be performed in a shell mold.
Compared with the prior art, the invention has the advantages that:
1. according to the invention, from the structural aspect, the girder of the structure can reduce or even eliminate a cavity generated by splicing the traditional carbon fiber pultrusion girders, thereby avoiding the generation of a resin-rich defect, reducing the product repair time, and having a gradually light structure, a better molding effect and higher efficiency;
2. the carbon fiber girder structure can be directly subjected to vacuum infusion molding after being quickly spliced according to requirements, simplifies the manufacturing process of the girder, avoids the defects caused by operation in a redundant process, and is more efficient and reliable.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of a girder main unit according to the present invention;
FIG. 3 is a schematic cross-sectional view of the filler rod of the present invention;
FIG. 4 is a graph of the splicing effect of a conventional pultruded longeron.
Illustration of the drawings:
1. a girder main body unit; 2. and (6) filling the strip.
Detailed Description
In order to facilitate an understanding of the invention, the invention will be described more fully and in detail below with reference to the accompanying drawings and preferred embodiments, but the scope of the invention is not limited to the specific embodiments below.
As shown in fig. 1 to 3, a carbon fiber wind power blade girder comprises a girder main body unit 1 of a plurality of carbon fiber wind power blades and a filling strip 2 used for connecting the girder main body unit 1, and the girder main body unit 1 and the filling strip 2 are connected by vacuum infusion molding after being spliced.
In this embodiment, the cross section of each girder main unit 1 is an arc-shaped carbon fiber structure, one end of each girder main unit 1 is an outwardly protruding arc-shaped structure, and the other end of each girder main unit 1 is an inwardly protruding arc-shaped structure, and the girder main units 1 of this structure can realize that the girders formed by splicing the girder main units 1 are continuous curve structures, are not easy to generate splicing gaps, and can also make the girder structure formed by splicing have higher stability.
In this embodiment, the cross section of the filler rod 2 is a circular structure.
In this embodiment, the girder main unit 1 and the filler strip 2 are spliced by the seamless fit between the arc-shaped end surface of the filler strip 2 and the arc-shaped end surface of the girder main unit 1, so that seamless splicing can be realized, repair is not needed, the rejection rate is low, and a girder structure in the prior art (as shown in fig. 4) has a clearance of a girder, generates a resin-rich defect, needs to be repaired, and can be directly scrapped if the defect cannot be repaired.
In the embodiment, the filler strip 2 and the girder main body unit 1 are respectively manufactured by adopting a pultrusion process, so that the molding efficiency is high. The preparation method of the carbon fiber wind power blade girder adopts the carbon fiber wind power blade girder structure, and comprises the following steps:
1) forming a plurality of girder main body units 1 and filling strips 2 through a specific die and a pultrusion process respectively;
2) and splicing the girder main body unit 1 and the filling strips 2 according to the process parameters, and performing vacuum infusion.
In this embodiment, the splicing process in step 2) may be performed in a shell mold.
Claims (3)
1. The utility model provides a carbon fiber wind-powered electricity generation blade girder which characterized in that: the girder main body unit comprises a girder main body unit (1) with a plurality of carbon fiber wind power blades and a filling strip (2) used for connecting the girder main body unit (1), wherein the girder main body unit (1) is connected with the filling strip (2) in a vacuum infusion forming mode after being spliced; the cross section of each girder main body unit (1) is of an arc-shaped carbon fiber structure, one end of each girder main body unit (1) is of an arc-shaped structure protruding outwards, and the other end of each girder main body unit (1) is of an arc-shaped structure protruding inwards; the cross section of the filling strip (2) is of a circular structure; the girder main body unit (1) and the filling strips (2) can be spliced seamlessly; the filling strips (2) and the girder main body units (1) are respectively manufactured by adopting a pultrusion process.
2. A preparation method of a carbon fiber wind power blade girder is characterized in that the structure of the carbon fiber wind power blade girder of claim 1 is adopted, and the preparation method comprises the following steps:
1) the forming of the girder main body units (1) and the filling strips (2) is respectively completed through a die and a pultrusion process;
2) and splicing the girder main body unit (1) and the filling strips (2) according to the process parameters, and performing vacuum infusion.
3. The method for manufacturing the carbon fiber wind power blade girder according to claim 2, wherein the splicing process in the step 2) is performed in a shell mold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910234696.7A CN109882364B (en) | 2019-03-26 | 2019-03-26 | Carbon fiber wind power blade crossbeam and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910234696.7A CN109882364B (en) | 2019-03-26 | 2019-03-26 | Carbon fiber wind power blade crossbeam and preparation method thereof |
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| Publication Number | Publication Date |
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| CN109882364A CN109882364A (en) | 2019-06-14 |
| CN109882364B true CN109882364B (en) | 2020-11-06 |
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| CN113306175A (en) * | 2021-06-22 | 2021-08-27 | 株洲时代新材料科技股份有限公司 | Method for preparing wind power blade pultrusion girder and product thereof |
| CN113858659A (en) * | 2021-09-30 | 2021-12-31 | 中材科技（酒泉）风电叶片有限公司 | Wind power blade core material structure and laying method thereof |
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| ES2625946T3 (en) * | 2012-11-20 | 2017-07-21 | Vestas Wind Systems A/S | Wind turbine blades and their manufacturing method |
| CN103573563B (en) * | 2013-11-19 | 2016-08-17 | 北京可汗之风科技有限公司 | A kind of spar cap method of attachment lengthening blade of wind-driven generator |
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