CN115674731A - Wind power blade manufacturing process - Google Patents
Wind power blade manufacturing process Download PDFInfo
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- CN115674731A CN115674731A CN202211386808.9A CN202211386808A CN115674731A CN 115674731 A CN115674731 A CN 115674731A CN 202211386808 A CN202211386808 A CN 202211386808A CN 115674731 A CN115674731 A CN 115674731A
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- blade
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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
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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
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Abstract
The invention discloses a wind power blade manufacturing process, which comprises the following steps: fixing a segmented positioning flange, manufacturing a reinforcing layer below an embedded part, installing the embedded part, lapping a beam cap, manufacturing a reinforcing layer above the embedded part, splicing a segmented shell and a segmented blade, and splicing the wind power blade; the beneficial benefits that can be produced by the invention are as follows: the invention has the advantages that the connecting structure of the segmented blade is more compact, the machining process is simplified, the beam cap and the layering of the wedge-shaped strips are integrally designed, the thickness of the layering of the beam cap and the layering of the wedge-shaped strips is reduced, the smooth transition of the rigidity of the blade is ensured, the fatigue strength of the composite material at the segmented joint is improved, the weight of the blade is reduced, the unidirectional fiber composite material layering is spliced in a chordwise direction, and the composite material layering is added among layers, so that the uniform penetration of suction and injection is ensured, the torsional rigidity at the segmented joint is increased, and the smooth transmission of the local load at the segmented joint of the blade is effectively ensured.
Description
Technical Field
The invention relates to the technical field of wind power blades, in particular to a manufacturing process of a wind power blade.
Background
In China, the development trend of large-scale wind turbines is established. With the continuous increase of the length of the blade, the problems of difficult blade transportation, road traffic control, increased transportation cost and the like are quickly highlighted, on one hand, due to safety considerations, the length, the height and the like of goods to be carried are limited by railways and highway management departments in all countries in the world, for example, the length of the blade of the wind generating set is dozens of meters or more, and the lengths and the heights of the blade belong to an overrun range; on the other hand, wind power fields in China are very wide in distribution, many places are far away, traffic is inconvenient, transportation cost of large blades is very high when the wind power fields are built, and the large blades cannot be delivered in some areas. The problem of large blade transportation becomes a troublesome problem in the development of wind energy in China, the segmented design and manufacture of the blades play an extremely important role in solving the problem, and the key point for smoothly manufacturing and assembling the segmented blades is that the blades are arranged in a segmented mode. The metal connecting cylinder in the prior art increases the weight of the blade, and the manufacturing of the blade-shaped framework increases the processing procedures.
Disclosure of Invention
The invention aims to provide a wind power blade manufacturing process to solve the technical problems of difficult blade transportation, road traffic control and increased transportation cost.
In order to achieve the purpose, the invention provides the following technical scheme:
the invention provides a wind power blade manufacturing process, which comprises the following steps:
s1, fixing a sectional positioning flange;
s2, manufacturing a lower reinforcing layer of the embedded part;
s3, installing an embedded part;
s4, lapping the beam cap;
s5, manufacturing an upper reinforcing layer of the embedded part;
s6, splicing the segmented shells and completing the segmented blades;
and S7, splicing the wind power blades.
Optionally or preferably, the wind power blade comprises at least two blade sections, each blade section comprises a root section and a tip section, connecting devices are arranged among the blade sections to form a whole blade, and an embedded part lower reinforcing layer is laid at the joint of the sections.
Optionally or preferably, the segmented positioning flanges are fixed, and the segmented blade suction surface airfoil positioning flange and the segmented blade pressure surface airfoil positioning flange are respectively fixed on the segmented blade positioning flange fixing device, so that the repeatability and consistency of installation of the segmented flanges are ensured.
Optionally or preferably, the lower reinforcing layer of the embedded part is manufactured by laying the lower reinforcing layer of the embedded part at the segmented joint of the blade shell, and the triaxial cloth is adopted to ensure the uniform permeation of resin during suction and injection and simultaneously increase the chord-wise strength of the blade; the lower reinforcing layer of the embedded part is formed by additionally laying at least 2 layers of triaxial cloth among at least 3 layers of uniaxial cloth layers, the uniaxial cloth layers are in chord-wise butt joint, the triaxial cloth layers are in chord-wise lap joint, and the tail edge is laid with approximate triangular reinforcing cloth.
Optionally or preferably, the embedded parts comprise connecting devices, PVC wedge-shaped strips and beam caps, the connecting devices are at least provided with 2 groups, bolt sleeves and light sleeves in two adjacent groups of connecting devices are arranged in a forward and reverse direction, the light sleeves are the same in structure as the bolt sleeves, are internally provided with no threads, and are provided with openings at two ends, the embedded parts are installed in a way that at least two groups of embedded parts are arranged on a reinforcing layer below the embedded parts, two adjacent groups of embedded parts are arranged in the forward and reverse direction, the tail ends of the light sleeves are provided with wrench space blocks, the screw sleeves in threaded fit with the positioning screws are embedded in the wrench space blocks, and the peripheries of the wrench space blocks are sealed; the gap between the bolt sleeve and the light sleeve is provided with a glass fiber reinforced plastic wedge-shaped strip, and one end of the bolt sleeve and the wrench space block, which is far away from the segmented connection part, is provided with a PVC wedge-shaped strip.
Optionally or preferably, the beam cap is lapped by lapping the beam cap on the wedge-shaped strip, a reinforcing layer is arranged between the PVC wedge-shaped strip and the beam cap, the bonding effect between the PVC wedge-shaped strip and the beam cap is enhanced, and the phenomenon that bonding substances at local positions are accumulated or bubble cavities appear is prevented from affecting the quality of the blade.
Optionally or preferably, the reinforcing layer on the embedded part is manufactured by paving a core material in the shell, and then paving the reinforcing layer on the bolt sleeve, the light sleeve and the wrench space block, so that resin can be uniformly permeated during suction and injection, the torsional rigidity of a subsection is increased, and the smooth transmission of local load of the subsection connection of the blade is ensured; the upper reinforcing layer of the embedded part is formed by additionally laying at least 2 layers of biaxial cloth among at least 3 layers of uniaxial cloth layers, wherein the uniaxial cloth layers are in chord-direction butt joint and the biaxial cloth layers are in chord-direction lap joint.
Optionally or preferably, the splicing of the segmented shell and the segmented blade are completed, auxiliary materials are laid on a reinforcing layer above the embedded part in a vacuum suction injection mode, the segmented shell is spliced through connecting positioning pins after pre-curing, auxiliary material removing, polishing and dismantling of a segmented blade suction surface wing-shaped positioning flange and a segmented blade pressure surface wing-shaped positioning flange, a girder is installed, die assembly, post-curing and stripping are carried out, a wrench space block is dismantled to obtain the segmented blade, the shell is spliced in a segmented mode firstly through the positioning pins, then integrated die assembly is carried out, and the segmented transportation is dismantled after the die stripping.
Optionally or preferably, the wind power blade is spliced by taking out a connecting positioning pin, arranging a bolt assembly between bolt sleeves and optical sleeves of a blade root section and a blade tip section of the segmented blade, arranging a tensioner in a wrench space, connecting one end of the bolt assembly with the bolt sleeve, penetrating the optical sleeve through the other end of the bolt assembly, fixing the bolt sleeve in the wrench space by using a nut, and connecting the blade root section and the blade tip section of the segmented blade to obtain the complete wind power blade.
Optionally or preferably, one end of the connecting positioning pin is a thread, the other end of the connecting positioning pin is a taper pin, the threaded end of the connecting positioning pin is connected with the bolt sleeve, and the end of the taper pin is connected with the light sleeve.
Based on the technical scheme, the invention can produce the following technical effects:
the invention has the advantages that the connecting structure of the segmented blade is more compact, the machining process is simplified, the beam cap and the layering of the wedge-shaped strips are integrally designed, the thickness of the layering of the beam cap and the layering of the wedge-shaped strips is reduced, the smooth transition of the rigidity of the blade is ensured, the fatigue strength of the composite material at the segmented joint is improved, the weight of the blade is reduced, the unidirectional fiber composite material layering is spliced in a chordwise direction, and the composite material layering is added among layers, so that the uniform penetration of suction and injection is ensured, the torsional rigidity at the segmented joint is increased, and the smooth transmission of the local load at the segmented joint of the blade is effectively ensured.
Drawings
FIG. 1 is a process flow diagram of the present invention.
Detailed Description
The invention provides a wind power blade manufacturing process, which comprises the following steps:
s1, fixing a sectional positioning flange, namely respectively fixing a sectional blade suction surface airfoil positioning flange and a sectional blade pressure surface airfoil positioning flange on a sectional blade positioning flange fixing device to ensure the repeatability and the consistency of the installation of the sectional flanges;
s2, manufacturing a lower reinforcing layer of the embedded part, namely paving the lower reinforcing layer of the embedded part at the segmented joint of the blade shell, wherein the reinforcing layer is formed by additionally paving at least 2 layers of triaxial cloth among at least 3 layers of uniaxial cloth layers, the uniaxial cloth layers are in chord-wise butt joint, the triaxial cloth layers are in chord-wise lap joint, and the tail edge is paved with approximate triangular reinforcing cloth;
s3, installing the embedded parts, namely arranging at least two groups of embedded parts on the embedded part lower reinforcing layer in the second step, wherein the adjacent two groups of embedded parts are arranged in the forward and reverse directions, each embedded part comprises a bolt sleeve and a light sleeve, and the bolt sleeves and the light sleeves of the blade root section and the blade tip section of the segmented blade are installed in a matched manner;
s4, lapping the beam cap, namely lapping the beam cap on the wedge-shaped strip, arranging a reinforcing layer between the PVC wedge-shaped strip and the beam cap, and reinforcing the bonding effect between the PVC wedge-shaped strip and the beam cap to prevent the adhesion substance accumulation at local positions or the bubble cavity from occurring to influence the quality of the blade;
s5, manufacturing an upper reinforcing layer of the embedded part: after a core material in the shell is laid, a reinforcing layer is laid on the bolt sleeve, the light sleeve and the wrench space block, the reinforcing layer is formed by additionally laying at least 2 layers of biaxial cloth among at least 3 layers of uniaxial cloth layers, the uniaxial cloth layers are in chord-wise butt joint, and the biaxial cloth layers are in chord-wise lap joint, so that resin can be uniformly permeated during suction and injection, the torsional rigidity of a subsection is increased, and the smooth transmission of local load of the subsection connection of the blade is ensured;
s6, splicing the segmented shell and completing the segmented blades: paving auxiliary materials on the upper reinforcing layer of the embedded part in the seventh step in a vacuum suction injection manner, then performing pre-curing, removing the auxiliary materials, polishing and dismantling a sectional blade suction surface wing-shaped positioning flange and a sectional blade pressure surface wing-shaped positioning flange, splicing a sectional shell through a connecting positioning pin, wherein one end of the connecting positioning pin is provided with threads, the other end of the connecting positioning pin is provided with a taper pin, the threaded end of the connecting positioning pin is connected with a bolt sleeve, the end of the taper pin is connected with a light sleeve, after a girder is installed, a die is assembled, post-curing and stripping are performed, a wrench space block is dismantled to obtain a sectional blade, the shell is spliced in sections by using the positioning pin, then the die is assembled in an integrated manner, and the shell is dismantled and transported in sections after stripping, so that the die is saved, and the splicing accuracy can be ensured;
s7, splicing the wind power blade, namely taking out the connecting positioning pin, arranging a bolt assembly between bolt sleeves and optical sleeves of a blade root section and a blade tip section of the segmented blade, arranging a tension device in a wrench space, connecting one end of the bolt assembly with the bolt sleeve, fixing the other end of the bolt assembly in the wrench space through the optical sleeve by using a nut, and connecting the blade root section and the blade tip section of the segmented blade to obtain the complete wind power blade;
one embodiment of the present invention is: a wind power blade comprises at least two blade sections, wherein each blade section comprises a blade root section and a blade tip section, connecting devices are arranged between the blade sections to form a whole blade, an embedded part lower reinforcing layer is laid at the joint of the sections, the reinforcing layer is formed by additionally laying at least 2 layers of triaxial cloth among at least 3 layers of uniaxial cloth layers, the uniaxial cloth chordwise butt joint is realized, the triaxial cloth chordwise lap joint is realized, and the tail edge reinforcing cloth is laid at the joint of the sections; the connecting device is connected with the blade root section and the blade tip section through a bolt assembly, one end of the bolt assembly is connected with a bolt sleeve, and the other end of the bolt assembly penetrates through the smooth sleeve and is fixed by a nut.
The foregoing is illustrative of the preferred embodiments of this invention, and it is to be understood that the invention is not limited to the precise form disclosed herein and that various other combinations, modifications, and environments may be resorted to, falling within the scope of the concept as disclosed herein, either as described above or as apparent to those skilled in the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (9)
1. The manufacturing process of the wind power blade is characterized by comprising the following steps of:
s1, fixing a sectional positioning flange;
s2, manufacturing a lower reinforcing layer of the embedded part;
s3, installing an embedded part;
s4, lapping the beam caps;
s5, manufacturing an upper reinforcing layer of the embedded part;
s6, splicing the segmented shells and completing the segmented blades;
and S7, splicing the wind power blades.
2. The wind power blade manufacturing process according to claim 1, wherein the wind power blade comprises at least two blade sections, each blade section comprises a root section and a tip section, connecting devices are arranged between the blade sections to be connected into a whole blade, and embedded part lower reinforcing layers are laid at the connection positions of the sections.
3. The wind power blade manufacturing process according to claim 1, wherein the segmented positioning flanges are fixed, and the segmented blade suction surface airfoil positioning flange and the segmented blade pressure surface airfoil positioning flange are respectively fixed on the segmented blade positioning flange fixing device, so that the repeatability and consistency of installation of the segmented flanges are ensured.
4. The wind power blade manufacturing process according to claim 1, wherein the embedded part lower reinforcing layer is manufactured by laying the embedded part lower reinforcing layer at the segmented joint of the blade shell, and the triaxial distribution is adopted to ensure uniform permeation of resin during suction and injection and increase the chord strength of the blade; the lower reinforcing layer of the embedded part is formed by additionally laying at least 2 layers of triaxial cloth among at least 3 layers of uniaxial cloth layers, the uniaxial cloth layers are in chord-wise butt joint, the triaxial cloth layers are in chord-wise lap joint, and the tail edge is laid with approximate triangular reinforcing cloth.
5. The wind power blade manufacturing process according to claim 1, wherein the embedded parts comprise connecting devices, PVC wedge-shaped strips and beam caps, the connecting devices are provided with at least 2 groups, bolt sleeves and light sleeves in two adjacent groups of connecting devices are arranged in the forward and reverse directions, the light sleeves are the same in structure as the bolt sleeves, are internally unthreaded and are provided with openings at two ends, the embedded parts are installed in such a way that at least two groups of embedded parts are arranged on a reinforcing layer below the embedded parts, two adjacent groups of embedded parts are arranged in the forward and reverse directions, a wrench space block is arranged at the tail end of each light sleeve, a screw sleeve in threaded fit with a positioning screw is embedded in each wrench space block, and the periphery of each wrench space block is sealed; the gap between the bolt sleeve and the light sleeve is provided with a glass fiber reinforced plastic wedge-shaped strip, and one end of the bolt sleeve and the wrench space block, which is far away from the segmented connection part, is provided with a PVC wedge-shaped strip.
6. The wind power blade manufacturing process according to claim 1, wherein the beam cap is lapped by lapping the beam cap on the wedge-shaped strip, a reinforcing layer is arranged between the PVC wedge-shaped strip and the beam cap, the bonding effect between the PVC wedge-shaped strip and the beam cap is enhanced, and the phenomenon that bonding substances at local positions are accumulated or bubble cavities are formed to influence the blade quality is prevented.
7. The wind power blade manufacturing process according to claim 1, wherein the reinforcement layer on the embedded part is manufactured by laying the reinforcement layer on the bolt sleeve, the light sleeve and the wrench space block after laying the core material in the shell, so that resin can be uniformly permeated during suction and injection, the torsional rigidity at the subsection is increased, and the smooth transmission of local load of the subsection connection of the blade is ensured; the upper reinforcing layer of the embedded part is formed by additionally laying at least 2 layers of biaxial cloth among at least 3 layers of uniaxial cloth layers, wherein the uniaxial cloth layers are in chord-direction butt joint and the biaxial cloth layers are in chord-direction lap joint.
8. The wind turbine blade manufacturing process according to claim 1, wherein the splicing of the segmented shells and the completion of the segmented blades are performed by vacuum suction and injection laying of auxiliary materials on the reinforcement layer above the embedded part, pre-curing, auxiliary material removal, polishing, and dismantling of the segmented blade suction surface airfoil positioning flange and the segmented blade pressure surface airfoil positioning flange, splicing the segmented shells through connecting positioning pins, installing a girder, die assembly, post-curing, and stripping, dismantling of wrench space blocks to obtain the segmented blades, splicing the shells in segments by using the positioning pins, performing integrated die assembly, and dismantling and segmented transportation after the stripping.
9. The wind power blade manufacturing process according to claim 1, wherein the wind power blade is spliced by taking out a connecting positioning pin, arranging a bolt assembly between a bolt sleeve and a light sleeve of a blade root section and a blade tip section of the segmented blade, arranging a tension device in a wrench space, connecting one end of the bolt assembly with the bolt sleeve and the other end of the bolt assembly with a nut in the wrench space through the light sleeve, and connecting the blade root section and the blade tip section of the segmented blade to obtain the complete wind power blade, wherein one end of the connecting positioning pin is a thread, the other end of the connecting positioning pin is a taper pin, the thread end of the connecting positioning pin is connected with the bolt sleeve, and the end of the taper pin is connected with the light sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211386808.9A CN115674731A (en) | 2022-11-07 | 2022-11-07 | Wind power blade manufacturing process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211386808.9A CN115674731A (en) | 2022-11-07 | 2022-11-07 | Wind power blade manufacturing process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115674731A true CN115674731A (en) | 2023-02-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211386808.9A Pending CN115674731A (en) | 2022-11-07 | 2022-11-07 | Wind power blade manufacturing process |
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| Country | Link |
|---|---|
| CN (1) | CN115674731A (en) |
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- 2022-11-07 CN CN202211386808.9A patent/CN115674731A/en active Pending
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