CN109878105B - Fiber layering method for wind power blade manufacturing - Google Patents
Fiber layering method for wind power blade manufacturing Download PDFInfo
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- CN109878105B CN109878105B CN201910215344.7A CN201910215344A CN109878105B CN 109878105 B CN109878105 B CN 109878105B CN 201910215344 A CN201910215344 A CN 201910215344A CN 109878105 B CN109878105 B CN 109878105B
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Abstract
The invention discloses a fiber layering method for manufacturing a wind power blade. Wherein, adopt the exhibition to the fiber cloth to lay in the first region of wind-powered electricity generation blade mould, the exhibition is unanimous with the exhibition of wind-powered electricity generation blade mould to the direction of laying of fiber cloth, and polylith exhibition is to the mutual overlap joint of fiber cloth. The second area of the wind power blade mould is paved with the chord-direction fiber cloth, the paving direction of the chord-direction fiber cloth is consistent with the chord direction of the wind power blade mould, the plurality of chord-direction fiber cloths are mutually lapped, and the adjacent chord-direction fiber cloths and the span-direction fiber cloths are mutually lapped. By adopting the method, the problem that the laying difficulty and the laying efficiency are difficult to be considered when the wind power blade is produced by adopting a spreading direction laying mode or a chord direction laying mode can be solved at the same time.
Description
Technical Field
The invention relates to a fiber layering method for manufacturing a wind power blade.
Background
Wind energy is an effective energy source way for coping with climate and environmental problems as a high-quality renewable energy source. The wind power blade is used as a core component of a wind turbine generator and is rapidly developing towards the large-scale direction of the blade. As the blade size becomes larger, the difficulty of manufacturing the composite blade also increases sharply. In the area with larger height and curvature change of the blade mould, constructors are not easy to reach, the manual laying difficulty of the fiber reinforced material is large, and the fiber reinforced material can be laid only by the aid of special tools.
In the production process of the wind power blade, the following two ways are generally adopted to lay the fiber cloth. One method is that the cloth width laying direction is all consistent with the blade spreading direction, the method has high laying efficiency, but the laying difficulty is extremely high in the area with obvious mold height and curvature change. This approach is adopted by most blade manufacturers in the industry. The other method is that the cloth width laying direction is totally consistent with the chord direction of the blade, the method is easy to operate in the area with large curvature change of the mould, but the operation efficiency in the area with gentle curvature is low, and the overlay overlapping weight is heavier. The method is only applied to the integrally formed blade technology of siemens.
Disclosure of Invention
The invention aims to overcome the defect that the laying difficulty and the laying efficiency are difficult to be considered when the wind power blade is produced by adopting a spread-direction laying mode or a chord-direction laying mode in the prior art, and provides a fiber laying method for manufacturing the wind power blade, which can consider the laying difficulty and the laying efficiency.
The invention solves the technical problems through the following technical scheme:
the utility model provides a fibre shop layer method for wind-powered electricity generation blade manufacturing which characterized in that lays multilayer fibrous layer in wind-powered electricity generation blade mould, and each fibrous layer is formed by the mutual overlap joint of polylith spanwise fibre cloth and polylith chordwise fibre cloth, wherein:
paving the spanwise fiber cloth in a first area of the wind power blade mould, wherein the paving direction of the spanwise fiber cloth is consistent with the spanwise direction of the wind power blade mould, and a plurality of spanwise fiber cloths are mutually overlapped;
the second area of the wind power blade mould is adopted to lay the chord-direction fiber cloth, the laying direction of the chord-direction fiber cloth is consistent with the chord direction of the wind power blade mould, a plurality of the chord-direction fiber cloth are mutually overlapped, and the chord-direction fiber cloth and the span-direction fiber cloth are mutually overlapped.
Preferably, the first region includes a blade leading edge, a blade body middle section to a blade tip region.
Preferably, the second region comprises the trailing edge of the blade.
Preferably, the width of the chord-direction fiber cloth is changed according to the curvature of the wind power blade mold, and the smaller the curvature of the wind power blade mold is, the wider the width of the chord-direction fiber cloth is.
Preferably, the overlapping length of the spanwise fiber cloths is between 50mm and 70 mm.
Preferably, the overlapping length of the chord-direction fiber cloth is between 50mm and 70 mm.
Preferably, the length of the lap joint between the chordwise fiber cloth and the spanwise fiber cloth is between 50mm and 70 mm.
Preferably, the overlapping positions on adjacent fiber layers are staggered.
Preferably, the overlapping positions on adjacent fibre layers are staggered by at least 70 mm.
On the basis of the common knowledge in the field, the above preferred conditions can be combined randomly to obtain the preferred embodiments of the invention.
The positive progress effects of the invention are as follows: adopt the exhibition to lay chord to laying the mode that combines together to laying and lay the fibre cloth in wind-powered electricity generation blade manufacturing process, can solve simultaneously and adopt single exhibition to when laying the mode, lay the problem that the degree of difficulty is big in the region that the height and the camber change of mould are obvious and adopt single chord to when laying the mode, lay the problem of inefficiency in the region that the height and the camber change of mould are mild.
Drawings
Fig. 1 is a schematic structural diagram of a wind turbine blade mold with chordwise fiber cloth and spanwise fiber cloth laid in the preferred embodiment of the invention.
Fig. 2 is a schematic structural diagram of the mutual overlapping of the chordwise fiber cloth and the spanwise fiber cloth in the preferred embodiment of the invention.
Fig. 3 is an enlarged view of a portion a in fig. 2.
Fig. 4 is an enlarged view of a portion B in fig. 2.
Description of reference numerals:
Wind power blade mold 30
In the spreading direction X
Chord direction Y
Detailed Description
The invention is further illustrated by the following examples, which are not intended to limit the scope of the invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
The manufacturing process of the large wind power blade generally comprises the following steps: male die, female die turning, layering, heating and curing, demoulding, surface polishing, paint spraying and the like. The layering process is to lay fiber materials such as glass fiber cloth and carbon fiber cloth in the wind turbine blade mold 30, and then pour resin into the fiber materials. The laying quality of the fiber material has great influence on the quality stability of the wind power blade, and wrinkles are easily generated when the fiber material is not laid well. In order to improve the quality of fiber material laying and simultaneously take the laying efficiency into consideration, the embodiment introduces a fiber laying method for wind turbine blade manufacturing, which mainly comprises laying a plurality of fiber layers in a wind turbine blade mold 30, wherein each fiber layer is formed by mutually overlapping a plurality of spanwise fiber cloths 10 and a plurality of chordwise fiber cloths 20. As shown in fig. 1 to 4, a spanwise fiber cloth 10 is laid in a first region of a wind turbine blade mold 30, the laying direction of the spanwise fiber cloth 10 is consistent with the spanwise direction X of the wind turbine blade mold 30, and a plurality of spanwise fiber cloths 10 are overlapped with each other. The chord-direction fiber cloth 20 is paved in the second area of the wind power blade mould 30, the paving direction of the chord-direction fiber cloth 20 is consistent with the chord direction Y of the wind power blade mould 30, the plurality of chord-direction fiber cloths 20 are mutually overlapped, and the adjacent chord-direction fiber cloths 20 and the spanwise fiber cloth 10 are mutually overlapped. The first area represents an area with gentle height and curvature in the wind power blade mold 30, and the second area represents an area with obvious height and curvature in the wind power blade mold 30.
In this embodiment, adopt the chord to the fibre cloth 20 to lay in the second region of wind-powered electricity generation blade mould 30 and can make chord to fibre cloth 20 and wind-powered electricity generation blade mould 30 more laminate, reduce and lay the degree of difficulty, avoid producing the problem of fold. The spanwise laying efficiency advantage can be played by adopting the spanwise fiber cloth 10 to lay in the first area of the wind power blade mould 30, and the manufacturing efficiency of the wind power blade is improved. And the overlapping of the spanwise fiber cloths 10 and the chordwise fiber cloths 20 ensures that the fiber load is transmitted. The paving mode can take the advantages of both the spread-direction paving mode and the chord-direction paving mode into consideration.
In this embodiment, the first region of the wind turbine blade mold 30 includes a leading edge, a blade body middle section, and a blade tip region. The spanwise fiber cloth 10 is laid in the area along the spanwise direction of the wind power blade mould 30, so that the laying quality can be guaranteed, and the laying efficiency can be improved. The second region of the wind blade mould 30 comprises the trailing edge of the blade. The curvature change in the area is obvious, the chord-wise fiber cloth 20 is laid along the chord direction of the wind power blade mould 30, the laying difficulty can be reduced, and the laying quality of the fiber cloth is well controlled.
In the actual operation process, the width of the chord-wise fiber cloth 20 can be changed according to the curvature of the wind power blade mold 30, and the smaller the curvature of the wind power blade mold 30 is, the wider the width of the adopted chord-wise fiber cloth 20 is. The width of the chord-wise fiber cloth 20 is adjusted according to the curvature change of the wind power blade mold 30, so that the chord-wise fiber cloth 20 is more attached to the wind power blade mold 30. The large-width cloth width is used in the area with gentle curvature change, so that the production efficiency can be improved, and the lap joint weight can be reduced.
In order to ensure that the fibre load is transferred efficiently, the span length of the spanwise fibre cloths 10 with respect to each other is between 50mm and 70mm in this embodiment. The lap length of the chord-direction fiber cloth 20 is 50mm-70 mm. The lap length between the chordwise fibre cloth 20 and the spanwise fibre cloth 10 is between 50mm and 70 mm.
After the first fiber layer of the shell is laid, the subsequent fiber layers can be laid by adopting the same laying process. It should be noted that the overlapping positions between the fiber cloths belong to the weakest positions, and in order to avoid that the weak points on different fiber layers overlap each other to influence the overall structural strength of the wind turbine blade, the overlapping positions on adjacent fiber layers should be staggered with each other. In this embodiment, the overlapping positions of the adjacent fiber layers are staggered by at least 70 mm.
While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention, and these changes and modifications are within the scope of the invention.
Claims (7)
1. The utility model provides a fibre shop layer method for wind-powered electricity generation blade manufacturing which characterized in that lays multilayer fibrous layer in wind-powered electricity generation blade mould, and each fibrous layer is formed by the mutual overlap joint of polylith spanwise fibre cloth and polylith chordwise fibre cloth, wherein:
paving the spanwise fiber cloth in a first area of the wind power blade mould, wherein the paving direction of the spanwise fiber cloth is consistent with the spanwise direction of the wind power blade mould, and a plurality of spanwise fiber cloths are mutually overlapped;
the second region of wind-powered electricity generation blade mould adopts the chord is laid to the fibre cloth, the direction of laying of chord to the fibre cloth with the chord of wind-powered electricity generation blade mould is unanimous to the polylith the mutual overlap joint of chord to fibre cloth, adjacent the chord to fibre cloth with the exhibition is to mutual overlap joint between the fibre cloth, first region includes blade leading edge, blade body middle section to apex region, the second region includes the blade trailing edge.
2. A fiber layering method for wind power blade manufacturing according to claim 1, wherein the width of the chord-wise fiber cloth is changed according to the curvature of the wind power blade mould, and the smaller the curvature of the wind power blade mould is, the wider the width of the chord-wise fiber cloth is.
3. A fibre lay-up method for wind turbine blade manufacture according to claim 1, wherein the spanwise fibre cloths overlap each other by a length of between 50mm and 70 mm.
4. A fibre lay-up method for wind turbine blade manufacture according to claim 1, wherein the chordwise fibre cloths overlap each other by a length of between 50mm and 70 mm.
5. A fibre lay-up method for wind turbine blade manufacture according to claim 1, wherein the length of the overlap between the chordwise fibre cloth and the spanwise fibre cloth is between 50mm and 70 mm.
6. A fibre lay-up method for wind turbine blade manufacture according to claim 1, wherein the overlapping positions on adjacent fibre layers are staggered with respect to each other.
7. A fibre lay-up method for wind turbine blade manufacture according to claim 6, wherein the overlap position on adjacent fibre layers is staggered by at least 70 mm.
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| CN201910215344.7A CN109878105B (en) | 2019-03-20 | 2019-03-20 | Fiber layering method for wind power blade manufacturing |
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| CN201910215344.7A CN109878105B (en) | 2019-03-20 | 2019-03-20 | Fiber layering method for wind power blade manufacturing |
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| CN109878105B true CN109878105B (en) | 2021-05-07 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111188740B (en) * | 2019-11-30 | 2024-08-02 | 惠阳航空螺旋桨有限责任公司 | Composite blade with high-strength blade root and manufacturing method thereof |
| CN114523686A (en) * | 2022-02-14 | 2022-05-24 | 三一重能股份有限公司 | Blade glass fiber layering method, blade glass fiber layering, wind power blade and wind power unit |
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| US5127802A (en) * | 1990-12-24 | 1992-07-07 | United Technologies Corporation | Reinforced full-spar composite rotor blade |
| CN101749194A (en) * | 2009-12-11 | 2010-06-23 | 重庆通用工业(集团)有限责任公司 | Wind turbine blade for large-scale wind generating set, and molding method thereof |
| CN102108946A (en) * | 2011-01-17 | 2011-06-29 | 南京航空航天大学 | Composite layering type wind turbine blade and manufacturing method thereof |
| EP2727710A2 (en) * | 2012-10-31 | 2014-05-07 | General Electric Company | A wind turbine rotor blade with fabric skin and associated method for assembly |
| CN106499578A (en) * | 2016-12-18 | 2017-03-15 | 中国科学院工程热物理研究所 | A kind of wind power blade tip lightening extending structure and method |
| CN106945302A (en) * | 2016-01-07 | 2017-07-14 | 中航商用航空发动机有限责任公司 | Fiber-reinforced composite fan blade and its manufacture method |
| CN107605667A (en) * | 2016-07-12 | 2018-01-19 | 北京博比风电科技有限公司 | A kind of modularization pneumatic equipment bladess part synergy design method |
| CN109372708A (en) * | 2018-10-12 | 2019-02-22 | 株洲时代新材料科技股份有限公司 | A kind of wind electricity blade girder or auxiliary girder construction and its manufacturing method |
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2019
- 2019-03-20 CN CN201910215344.7A patent/CN109878105B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5127802A (en) * | 1990-12-24 | 1992-07-07 | United Technologies Corporation | Reinforced full-spar composite rotor blade |
| CN101749194A (en) * | 2009-12-11 | 2010-06-23 | 重庆通用工业(集团)有限责任公司 | Wind turbine blade for large-scale wind generating set, and molding method thereof |
| CN102108946A (en) * | 2011-01-17 | 2011-06-29 | 南京航空航天大学 | Composite layering type wind turbine blade and manufacturing method thereof |
| EP2727710A2 (en) * | 2012-10-31 | 2014-05-07 | General Electric Company | A wind turbine rotor blade with fabric skin and associated method for assembly |
| CN106945302A (en) * | 2016-01-07 | 2017-07-14 | 中航商用航空发动机有限责任公司 | Fiber-reinforced composite fan blade and its manufacture method |
| CN107605667A (en) * | 2016-07-12 | 2018-01-19 | 北京博比风电科技有限公司 | A kind of modularization pneumatic equipment bladess part synergy design method |
| CN106499578A (en) * | 2016-12-18 | 2017-03-15 | 中国科学院工程热物理研究所 | A kind of wind power blade tip lightening extending structure and method |
| CN109372708A (en) * | 2018-10-12 | 2019-02-22 | 株洲时代新材料科技股份有限公司 | A kind of wind electricity blade girder or auxiliary girder construction and its manufacturing method |
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Address after: 200233 Caobao Road, Xuhui District, Shanghai, No. 115 Applicant after: Shanghai Electric Wind Power Group Co., Ltd Address before: 200233 Caobao Road, Xuhui District, Shanghai, No. 115 Applicant before: Shanghai Electric Wind Power Group Co., Ltd. |
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