CN217270598U - Wind turbine generator system beveling main beam blade - Google Patents
Wind turbine generator system beveling main beam blade Download PDFInfo
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- CN217270598U CN217270598U CN202220999917.7U CN202220999917U CN217270598U CN 217270598 U CN217270598 U CN 217270598U CN 202220999917 U CN202220999917 U CN 202220999917U CN 217270598 U CN217270598 U CN 217270598U
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- pultrusion
- pultrusion plate
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
The utility model discloses a beveling main beam blade of a wind turbine generator, wherein two main beams of the blade are formed by connecting a plurality of main beam pultrusion plates, and the main beam pultrusion plate which is positioned in a blade tip section and close to one side of the front edge of the blade is obliquely cut towards the blade root direction at the position where the main beam pultrusion plate keeps a preset distance with the structural adhesive of the inner wall of the front edge of the blade, so that the cross section width of the main beam pultrusion plate is gradually reduced from the blade root to the blade tip direction, and a beveling chamfer is formed between the main beam pultrusion plate and the adjacent main beam pultrusion plate; the other main beam pultrusion plate which is positioned in the blade tip section and close to one side of the rear edge of the blade is obliquely cut towards the direction of the blade root at the position where the position keeps a preset distance with the structural adhesive of the inner wall of the rear edge of the blade, so that the width of the section of the main beam pultrusion plate is gradually reduced from the blade root to the blade tip, and another oblique chamfer angle is formed between the main beam pultrusion plate and the adjacent main beam pultrusion plate; the utility model discloses make the apex subtract heavy in the time of can increasing material efficiency, improve and wave and the frequency of shimmying, subtract at the blade and fall originally and prevent that resonance vortex shakes in the aspect of, play positive effect.
Description
Technical Field
The utility model belongs to the technical field of wind turbine generator system wind wheel blade's technique and specifically relates to indicate a wind turbine generator system miscut girder blade.
Background
At present, the wind power generation technology is mature day by day, the weight reduction and cost reduction requirements of wind power blades are continuously highlighted, and the diameter of a wind wheel is increased while the high requirements on the quality of the wind wheel are also provided. The glass fiber pultrusion process improves the specific modulus of the traditional uniaxial cloth and provides a good material performance basis for reducing the weight and cost of the blade. However, the pultrusion process has the problems of difficult attachment, angle bonding interference and the like in the laying process, particularly, the pultruded plate cannot be laid in the blade tip area along with chord length reduction, so that only perfusion uniaxial cloth can be used in the blade tip area, the material efficiency is reduced, and the blade tip weight increment also can cause rapid reduction of waving and shimmy frequency.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve not enough among the prior art, provide a wind turbine generator system miscut girder blade, before apex girder draws the extruded sheet and the structure is glued and is interfered, draw the extruded sheet to carry out chord to the miscut transition to the girder, repair type back girder pultrusion board need prolong to the apex according to structural strength, carry out the reinforcement at girder chord to cutting position, be favorable to laying girder pultrusion board to the apex, improve apex structural efficiency, reduce apex weight.
In order to achieve the above purpose, the utility model provides a technical scheme does: a wind turbine generator beveling main beam blade is characterized in that two main beams of the blade are formed by connecting a plurality of main beam pultrusion plates and are respectively attached to a blade pressure surface and a blade suction surface to extend in the length direction of the blade, the blade is divided into a blade tip section and a blade root section, structural adhesives are arranged on the inner walls of the front edge and the rear edge of the blade, the main beam pultrusion plate which is positioned in the blade tip section and close to one side of the front edge of the blade starts to be obliquely cut towards the blade root direction at the position where the main beam pultrusion plate keeps a preset distance from the structural adhesives on the inner wall of the front edge of the blade, so that the section width of the main beam pultrusion plate is gradually reduced from the blade root to the blade tip, and a beveling chamfer is formed between the main beam pultrusion plate and the main beam pultrusion plate adjacent to the main beam pultrusion plate; and the other main beam pultrusion plate which is positioned in the blade tip section and close to one side of the rear edge of the blade starts to cut obliquely towards the blade root at a position where the position keeps a preset distance from the structural adhesive on the inner wall of the rear edge of the blade, so that the section width of the main beam pultrusion plate is gradually reduced from the blade root to the blade tip, and another oblique chamfer angle is formed between the other main beam pultrusion plate and the adjacent main beam pultrusion plate.
Further, the preset distance is 50 mm.
Further, the proportion of the chamfer is not more than 1: 10.
furthermore, at least two layers of biaxial cloth for reinforcement are laid at the splicing positions of the girder pultrusion plates on the two sides, which are positioned in the blade tip section and are respectively close to the front edge and the rear edge of the blade, and the girder pultrusion plates adjacent to the two sides, and the width of the biaxial cloth is not less than 100 mm.
Further, at least two layers of single-shaft cloth for reinforcement are paved on the two main beams.
Furthermore, the two main beams respectively attached to the pressure surface and the suction surface of the blade are connected through a web.
Compared with the prior art, the utility model, have following advantage and beneficial effect:
the utility model discloses can avoid pultrusion technology to have in the laying process and be difficult to laminating and bonding angle interference scheduling problem, the apex region is unable to be laid along with chord length reduction pultrusion board, leads to the apex region can only use the problem of filling the uniaxial cloth, makes the apex subtract heavy when increasing material efficiency, improves and waves and the pendulum vibration frequency, subtracts at the blade and falls this and prevention resonance vortex in the aspect of shaking, plays positive effect.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
The present invention will be further described with reference to the following specific embodiments.
Referring to fig. 1, for the beveling main girder blade of the wind turbine generator set provided by this embodiment, two main girders of the blade are formed by connecting four main girder pultrusion plates 01, 02, 03, 04, the width of which is 480mm, and the two main girders are respectively attached to the pressure surface and the suction surface of the blade and extend in the length direction of the blade, the total length is 144m, the two main girders respectively attached to the pressure surface and the suction surface of the blade are connected by a web, the blade is divided into a blade tip section and a blade root section, structural adhesives are respectively disposed on the inner walls of the front edge and the rear edge of the blade, the main girder pultrusion plate 04 located in the blade tip section and near the front edge of the blade starts to cut in the blade root direction at a position where the interval of 50mm from the structural adhesive 06 on the inner wall of the front edge of the blade, that is, a beveling tool is used at 71m of the main girder pultrusion plate 04 to cut in the blade root direction, so that the width of the section thereof is gradually reduced from the blade root to the blade tip, a chamfer angle 08 is formed between the main beam pulling and extruding plate 03 and the adjacent main beam pulling and extruding plate 03, and meanwhile, the main beam pulling and extruding plate 04 interferes with the structural adhesive 06 on the inner wall of the front edge;
the other main beam pultrusion plate 01 which is positioned in the blade tip section and close to one side of the trailing edge of the blade is obliquely cut towards the blade root direction at the position which is 50mm away from the structural adhesive 05 of the inner wall of the trailing edge of the blade, namely 73m of the main beam pultrusion plate 01 by adopting a beveling tool, so that the section width of the main beam pultrusion plate is gradually reduced from the blade root to the blade tip direction, and another beveling chamfer is formed between the main beam pultrusion plate 02 adjacent to the main beam pultrusion plate, wherein the proportion of the two beveling chamfers is 1:15, the stress concentration coefficient of the proportion of the beveling chamfers is smaller than 1.2 through simulation, two layers of biaxial cloth 07 for reinforcement are laid at the splicing positions of the main beam pultrusion plates at two sides which are positioned in the blade tip section and respectively close to the leading edge and the trailing edge of the blade and the main beam pultrusion plate adjacent to the main beam pultrusion plate respectively, the width of each biaxial cloth is 200mm, two layers of uniaxial cloth for reinforcement are laid on the main beam, the main beam used for preventing the blade tip area from tilting when being laid; if the simulated stress concentration coefficient of the bevel chamfer ratio after cutting is not less than 1.2, secondary bevel cutting needs to be carried out at the concentration position 09 so as to reduce stress concentration, and if the number of layers of the cutting pultrusion plate exceeds 1 layer, the bevel positions cannot be overlapped and need to be staggered in the blade direction.
The above-mentioned embodiments are only preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, so that all the changes made according to the shape and principle of the present invention should be covered within the protection scope of the present invention.
Claims (6)
1. The utility model provides a wind turbine generator system miscut main girder blade, the girder of blade has two, forms by the connection of multi-disc girder pultrusion board to laminating blade pressure surface and blade suction surface respectively and extending on the blade length direction, the blade is distinguished there is blade tip section and blade root section, the leading edge inner wall and the trailing edge inner wall department of blade all are provided with the structure and glue its characterized in that: the main beam pultrusion plate which is positioned in the blade tip section and close to one side of the front edge of the blade starts to cut obliquely towards the blade root direction at the position where the main beam pultrusion plate keeps a preset distance from the structural adhesive of the inner wall of the front edge of the blade, so that the section width of the main beam pultrusion plate is gradually reduced from the blade root to the blade tip direction, and a beveling chamfer is formed between the main beam pultrusion plate and the main beam pultrusion plate adjacent to the main beam pultrusion plate; and the other main beam pultrusion plate which is positioned in the blade tip section and close to one side of the rear edge of the blade starts to cut obliquely towards the direction of the blade root at the position where the position keeps a preset distance with the structural adhesive of the inner wall of the rear edge of the blade, so that the width of the section of the main beam pultrusion plate is gradually reduced from the blade root to the blade tip, and another oblique chamfer angle is formed between the main beam pultrusion plate and the adjacent main beam pultrusion plate.
2. The chamfered main beam blade of a wind turbine generator according to claim 1, wherein: the preset distance is 50 mm.
3. The chamfered main beam blade of a wind turbine generator as claimed in claim 1, wherein: the proportion of the beveling chamfer is not more than 1: 10.
4. the chamfered main beam blade of a wind turbine generator according to claim 1, wherein: at least two layers of biaxial cloth for reinforcement are laid at the splicing positions of the girder pultrusion plates on the two sides, which are positioned in the blade tip section and are respectively close to the front edge and the rear edge of the blade, and the girder pultrusion plates adjacent to the girder pultrusion plates, and the width of the biaxial cloth is not less than 100 mm.
5. The chamfered main beam blade of a wind turbine generator according to claim 1, wherein: at least two layers of single-shaft cloth for reinforcement are paved on the two main beams.
6. The chamfered main beam blade of a wind turbine generator according to claim 1, wherein: the two main beams respectively attached to the pressure surface and the suction surface of the blade are connected through a web.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220999917.7U CN217270598U (en) | 2022-04-27 | 2022-04-27 | Wind turbine generator system beveling main beam blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220999917.7U CN217270598U (en) | 2022-04-27 | 2022-04-27 | Wind turbine generator system beveling main beam blade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217270598U true CN217270598U (en) | 2022-08-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220999917.7U Active CN217270598U (en) | 2022-04-27 | 2022-04-27 | Wind turbine generator system beveling main beam blade |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217270598U (en) |
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2022
- 2022-04-27 CN CN202220999917.7U patent/CN217270598U/en active Active
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