CN221022432U - Wind-powered electricity generation blade core repair structure - Google Patents
Wind-powered electricity generation blade core repair structure Download PDFInfo
- Publication number
- CN221022432U CN221022432U CN202322786521.1U CN202322786521U CN221022432U CN 221022432 U CN221022432 U CN 221022432U CN 202322786521 U CN202322786521 U CN 202322786521U CN 221022432 U CN221022432 U CN 221022432U
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- blade
- core material
- core
- shell
- gap
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- 230000008439 repair process Effects 0.000 title claims abstract description 17
- 230000005611 electricity Effects 0.000 title claims abstract description 4
- 239000011162 core material Substances 0.000 claims abstract description 139
- 239000000463 material Substances 0.000 claims abstract description 53
- 238000005187 foaming Methods 0.000 claims abstract description 49
- 240000007182 Ochroma pyramidale Species 0.000 claims description 6
- 238000007711 solidification Methods 0.000 claims description 5
- 230000008023 solidification Effects 0.000 claims description 5
- 239000004697 Polyetherimide Substances 0.000 claims description 4
- 229920001601 polyetherimide Polymers 0.000 claims description 4
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 4
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 4
- 239000004793 Polystyrene Substances 0.000 claims description 3
- 229920001893 acrylonitrile styrene Polymers 0.000 claims description 3
- -1 polyethylene terephthalate Polymers 0.000 claims description 3
- 239000004800 polyvinyl chloride Substances 0.000 claims description 3
- SCUZVMOVTVSBLE-UHFFFAOYSA-N prop-2-enenitrile;styrene Chemical compound C=CC#N.C=CC1=CC=CC=C1 SCUZVMOVTVSBLE-UHFFFAOYSA-N 0.000 claims description 3
- 230000007704 transition Effects 0.000 claims description 3
- 229920002223 polystyrene Polymers 0.000 claims description 2
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 2
- 239000006260 foam Substances 0.000 abstract description 4
- 239000002131 composite material Substances 0.000 abstract description 3
- 239000002699 waste material Substances 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 16
- 230000008569 process Effects 0.000 description 10
- 238000000465 moulding Methods 0.000 description 7
- 239000011347 resin Substances 0.000 description 7
- 229920005989 resin Polymers 0.000 description 7
- 238000001802 infusion Methods 0.000 description 6
- 238000005520 cutting process Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000004744 fabric Substances 0.000 description 3
- 239000003365 glass fiber Substances 0.000 description 3
- 229920002635 polyurethane Polymers 0.000 description 3
- 239000004814 polyurethane Substances 0.000 description 3
- 238000009417 prefabrication Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 238000005381 potential energy Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 239000012943 hotmelt Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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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
- 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 provides a wind-powered electricity generation blade core repair structure, includes the casing core, and the casing core sets up in the blade mould, still sets up the casing prefab in the blade mould, gap between the casing core, gap between casing core and the casing prefab, gap between casing core and the blade mould all pack and set up quick foaming material. Compared with the prior art, the utility model has the following advantages: aiming at the problems of unstable gap size, time and labor waste in gap repair operation and unstable repair quality of the wind power blade shell core material, the gap is filled with the rapid foaming material, the rapid foaming material is utilized to rapidly foam, the volume expansion is used for filling the gap of the core material, a composite structure combining the rapid foaming material and the core material is formed, the core material repair operation difficulty is reduced, the rapid repair of the core material gap is realized, the gap filling quality is ensured, and the purpose of improving the laying efficiency of the blade core material is achieved.
Description
Technical Field
The utility model belongs to the technical field of wind power blade forming, and particularly relates to a wind power blade core material repairing structure.
Background
The wind power blade is used as a main component of the wind turbine generator, and generally adopts a sandwich structure so as to reduce the weight of the wind power blade and improve the strength and the rigidity of the wind power blade. The manufacturing process of the blade is to lay structural materials such as glass fiber cloth, core materials, prefabricated members and the like and auxiliary materials for infusion molding on a die, establish a vacuum system, and then finish resin infusion of the blade by adopting a vacuum auxiliary infusion molding process, and solidify and mold.
In the existing molding process, the time required for laying the core material is long, and improvement is needed. The problems of mismatch between the core materials, mismatch between the core materials and the prefabricated members and difficulty in shape following of the core materials at the arc-shaped positions and corners of the edges of the die can occur when the core materials are paved due to the problems of large thickness, hard texture and insufficient machining precision, so that the gap between the core materials is overlarge, and resin rich is easy to form after the filling molding. Therefore, the gap between the core materials needs to be repaired, and the process takes a lot of manpower and time.
The conventional method for repairing the gaps of the core material comprises the following steps: adjusting the core material to ensure the core material clearance to be stable; cutting the core material blocks according to the size of the core material gap, and embedding the cut core material blocks into the core material gap; and finally, checking the repairing effect, and if the repairing effect is not qualified, continuing to adjust. Because the core material blocks embedded in the gaps are manually cut by operators, the gap size cannot be perfectly adapted, and the operators need to adjust for many times to be qualified in filling. Meanwhile, the core material has certain hardness, especially Balsawood (BALSA), and manual cutting of the core material is time-consuming and labor-consuming. Finally, the repairing efficiency of the core material is low, the repairing quality is unstable, and the core material laying process becomes a bottleneck affecting the production speed.
In the prior art of 'a wind power blade shell core material prefabrication process method and shell core material prefabrication' with the application number 202110344545.4, the method comprises the following steps: manufacturing a shell core material pre-paving template; paving a plurality of shell core materials on a shell core material pre-paving template; connecting the plurality of shell core materials using a back felt; repairing oblique angles on the connected shell core materials by using a hot melt felt; numbering the core material after modification in a partition mode, and cutting according to the partition; finally, the shell core material is placed on a storage table for standby. According to the method, the core material is prefabricated, the mold occupying time is reduced, the efficiency is greatly improved, the problem that gaps still need to be repaired after the core material is paved cannot be solved, and the cost of core material prefabrication is increased.
In the conventional wind power blade core material structure and the laying method thereof with the application number 202111165485.6, a hard plate is arranged on the outer side, and the hard plate and an elastic plate are arranged at intervals, so that the core material can keep strength and has certain elastic potential energy, the core material is compressed along the elastic direction before being laid, and gaps among the core materials, between the core materials and the prefabricated member, between the core materials and the arc and corner positions of the die are greatly reduced along with the release of the elastic potential energy after being laid. According to the method, the elastic deformation of the elastic body is utilized to reduce the gap between the core materials, but the operation difficulty of laying the core materials is increased, so that the production efficiency is not improved.
In the existing wind power blade core material processing tool with the patent application number 202122074572.2, the core material can be cut with high quality and high efficiency, triangular strips with different angle requirements are formed, and the requirements of filling gaps between webs and blade shells are met. The method simplifies the operation of cutting the core material strips, but can not realize perfect filling of gaps at one time, and the efficiency of repairing the gaps of the core material is greatly improved.
Disclosure of utility model
In order to solve the technical problem that resin enrichment occurs due to the fact that gaps exist in the shell core material of the wind power blade, the utility model provides a wind power blade core material repairing structure, which can eliminate the gaps of the shell core material and improve the laying efficiency of the shell core material.
The aim of the utility model is realized by adopting the following technical scheme. According to the wind power blade core material repairing structure provided by the utility model, the wind power blade core material repairing structure comprises the shell core material, wherein the shell core material is arranged in the blade mould, the shell prefabricated member is further arranged in the blade mould, and the gaps between the shell core material and the shell prefabricated member, and the gaps between the shell core material and the blade mould are filled with the rapid foaming material.
Further, the shell core material is made of polyethylene terephthalate, polyvinyl chloride, balsawood, polymethacrylimide, polyetherimide, acrylonitrile-styrene or polystyrene.
Further, the blade mould comprises a blade shell mould and a blade web mould.
Further, the shell prefabricated member comprises a girder, an auxiliary girder, a trailing edge girder and a blade root prefabricated member.
Further, the rapid foaming material is a foaming material with the mechanical property close to that of the shell core material after solidification.
Further, the rapid foaming material fills the bottom of the gap and fills the gap after expansion.
Further, after the rapid foaming material is foamed and expanded, the rapid foaming material is higher than the outer surface of the shell core material.
Further, the rapid foaming material is flush with the surface of the shell core material or is smooth in transition after being cured and trimmed.
Compared with the prior art, the utility model has the following advantages: aiming at the problems of unstable gap size, time and labor waste in gap repair operation and unstable repair quality of the wind power blade shell core material, the gap is filled with the rapid foaming material, the rapid foaming material is utilized to rapidly foam, the volume expansion is used for filling the gap of the core material, a composite structure combining the rapid foaming material and the core material is formed, the core material repair operation difficulty is reduced, the rapid repair of the core material gap is realized, the gap filling quality is ensured, and the purpose of improving the laying efficiency of the blade core material is achieved.
The foregoing description is only an overview of the present utility model, and is intended to be implemented in accordance with the teachings of the present utility model, as well as the preferred embodiments thereof, together with the following detailed description of the utility model, given by way of illustration only, together with the accompanying drawings.
Drawings
FIG. 1 is a schematic diagram of a filling structure of a gap between shell core materials according to an embodiment of the present utility model;
FIG. 2 is a schematic diagram of a gap filling structure between a shell core and a blade mold according to an embodiment of the present utility model;
Fig. 3 is a schematic view of a gap filling structure between a shell core material and a shell preform according to an embodiment of the present utility model.
[ Reference numerals ]
1-A shell core;
2-quick foaming material;
3-blade mold;
4-shell preform.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
An embodiment of a repairing structure for a wind power blade core material is shown in fig. 1 to 3. The wind power blade comprises a blade shell, wherein the blade shell comprises glass fiber cloth, a shell core material 1, a shell prefabricated member 4, poured resin and the like. When the blade shell is processed, the structural materials such as the glass fiber cloth, the shell core material 1, the shell prefabricated member 4 and the like and auxiliary materials for infusion molding are paved in the blade mold 3, vacuum is established, and then the vacuum auxiliary infusion molding process is adopted to finish the infusion of the blade resin, and the blade shell is manufactured through solidification molding.
The shell core 1 may be a core made of polyethylene terephthalate (PET), polyvinyl chloride (PVC), balsawood (BALSA), polymethacrylimide (PMI), polyetherimide (PEI), acrylonitrile-Styrene (SAN), or Polystyrene (PS). The blade mould 3 may be a blade shell mould and a blade web mould. The shell preform 4 may be a girder, an auxiliary girder, a trailing edge girder, a blade root preform.
In the existing blade shell forming process, the problems of mismatching among shell core materials 1, mismatching among shell core materials 1 and shell prefabricated parts 4, difficulty in shape following of the shell core materials 1 at the edge arc position, corners and the like of the blade mould 3 can occur when the shell core materials 1 are paved in the blade mould 3 due to the problems of large thickness, hard texture and insufficient processing precision, the gaps of the shell core materials 1 and the shell prefabricated parts 4, the gaps of the shell core materials 1 and the blade mould 3 are overlarge, and resin-rich materials are easily formed in the gaps after pouring and forming, so that the integral strength and rigidity of the blade shell are affected.
Therefore, when the shell core material 1, the shell prefabricated member 4 and other structural materials are paved in the blade mould 3, the gaps between the adjacent shell core materials 1, the gaps between the shell core material 1 and the shell prefabricated member 3 and the gaps between the shell core material 1 and the blade mould 3 are filled with the rapid foaming material 2, the gaps generated by the shell prefabricated member 3 and the blade mould 3 due to insufficient processing precision of the shell core material 1 are repaired, a composite structure formed by the shell core material 1 and the rapid foaming material 2 is formed after the rapid foaming material 2 is solidified, the problem of insufficient precision of the shell core material 1 is solved, and the tight fit between the shell core material 1 and the blade mould 3 and the shell prefabricated member 4 is ensured. After the gap is repaired, the whole quality of the blade shell after being poured, solidified and molded is improved, and resin enrichment is avoided. In the gap repairing process, the operation difficulty of repairing the shell core material 1 is reduced, the gap of the shell core material is quickly repaired, the filling quality of the gap is ensured, and meanwhile, the laying efficiency of the shell core material is improved.
Before laying the shell core material 1, the quick foaming material 2 is prepared, the quick foaming material 2 can be prepared according to a formula in advance, or a finished product can be purchased directly, so that the quick foaming material is ensured to be uniformly mixed before use, and the filling quality of the filled quick foaming material is improved. The rapid foaming material 2 can select polyurethane with higher density, and the mechanical property of the polyurethane within a certain density range can be close to that of the shell core material 1 after solidification because the foam mechanical property of the polyurethane is positively correlated with the density.
After the shell core material 1 is paved, under the condition of normal temperature and normal pressure, a quick foaming material is injected along the gap of the shell core material and the gap formed by the shell core material 1, the shell prefabricated member 4 and the blade mould 3. The way of injecting the quick foaming material can be injection, pouring, extruding and the like, so that the quick foaming material expands from bottom to top and occupies the gap, and therefore, the gap is not required to be filled when the quick foaming material is injected, and the gap can be filled by virtue of the expansion of the quick foaming material. The injection quantity of the rapid foaming material is controlled according to actual needs, so that the filling quality is ensured, and the gaps are filled. Operators can design auxiliary filling tools according to operation requirements so as to smoothly inject the rapid foaming materials into the gap.
After the rapid foaming material is injected, the rapid foaming material is foamed under the condition of normal temperature and normal pressure, and the volume of the rapid foaming material expands to fill the gaps of the core material and extrude the gaps. The rapid foaming material has stable foaming performance and stable density after foaming, and after solidification, the mechanical property is close to that of the shell core material 1, so that the consistency of quality is ensured.
After the quick foaming material is solidified, an operator uses a repair tool (such as a shovel blade) to repair the shape of the quick foaming material, the extruded quick foaming material is shoveled out, and the smoothness or transition smoothness between the quick foaming material and the shell core material is ensured. In the repairing process, operators visually check the gap filling integrity of the shell core material 1, and check the hardness of the cured rapid foaming material by using a durometer to ensure the filling quality of the gap.
The gap of the shell core is filled by utilizing the rapid foaming material to rapidly foam and expand the volume to replace the gap of the cutting core block embedded into the shell core, so that the operation difficulty of repairing the shell core is greatly reduced, the filling quality of the gap of the shell core is ensured, the problems of difficult repair and unstable repair quality of the gap of the shell core caused by insufficient machining precision of the shell core and complex blade wing profile are completely solved, the repair efficiency of the shell core is improved, the working efficiency of the shell core laying process personnel is improved, and the requirement of paving and accelerating is met.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the spirit and scope of the utility model as defined by the appended claims and their equivalents.
Claims (8)
1. The utility model provides a wind-powered electricity generation blade core repair structure, includes the casing core, and the casing core sets up in the blade mould, still sets up casing prefab, its characterized in that in the blade mould: and the gaps between the shell core materials, the gaps between the shell core materials and the shell prefabricated member and the gaps between the shell core materials and the blade mould are filled with quick foaming materials.
2. The wind power blade core material repairing structure according to claim 1, wherein: the shell core material is made of polyethylene terephthalate, polyvinyl chloride, balsawood, polymethacrylimide, polyetherimide, acrylonitrile-styrene or polystyrene.
3. The wind power blade core material repairing structure according to claim 1, wherein: the blade mould comprises a blade shell mould and a blade web mould.
4. The wind power blade core material repairing structure according to claim 1, wherein: the shell prefabricated member comprises a girder, an auxiliary girder, a trailing edge girder and a blade root prefabricated member.
5. The wind power blade core material repairing structure according to claim 1, wherein: the rapid foaming material is a foaming material with the mechanical property close to that of the shell core material after solidification.
6. The wind power blade core material repairing structure according to claim 1, wherein: the rapid foaming material fills the bottom of the gap and fills the gap after expansion.
7. The wind power blade core material repairing structure according to claim 1, wherein: after the rapid foaming material is foamed and expanded, the rapid foaming material is higher than the outer surface of the shell core material.
8. The wind power blade core material repairing structure according to claim 1, wherein: and the quick foaming material is flush with the surface of the shell core material or is smooth in transition after being cured and trimmed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322786521.1U CN221022432U (en) | 2023-10-17 | 2023-10-17 | Wind-powered electricity generation blade core repair structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322786521.1U CN221022432U (en) | 2023-10-17 | 2023-10-17 | Wind-powered electricity generation blade core repair structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221022432U true CN221022432U (en) | 2024-05-28 |
Family
ID=91190018
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322786521.1U Active CN221022432U (en) | 2023-10-17 | 2023-10-17 | Wind-powered electricity generation blade core repair structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221022432U (en) |
-
2023
- 2023-10-17 CN CN202322786521.1U patent/CN221022432U/en active Active
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