CN115839301B - Wind turbine segmented blade and assembling method and preparation method thereof - Google Patents
Wind turbine segmented blade and assembling method and preparation method thereof Download PDFInfo
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- CN115839301B CN115839301B CN202210715649.6A CN202210715649A CN115839301B CN 115839301 B CN115839301 B CN 115839301B CN 202210715649 A CN202210715649 A CN 202210715649A CN 115839301 B CN115839301 B CN 115839301B
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- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000002360 preparation method Methods 0.000 title abstract description 5
- 238000003780 insertion Methods 0.000 claims abstract description 58
- 230000037431 insertion Effects 0.000 claims abstract description 58
- 239000000853 adhesive Substances 0.000 claims abstract description 27
- 230000001070 adhesive effect Effects 0.000 claims abstract description 27
- 238000004519 manufacturing process Methods 0.000 claims abstract description 15
- 239000002131 composite material Substances 0.000 claims description 17
- 239000011347 resin Substances 0.000 claims description 11
- 229920005989 resin Polymers 0.000 claims description 11
- 238000010438 heat treatment Methods 0.000 claims description 10
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- 210000001503 joint Anatomy 0.000 claims description 8
- 230000008569 process Effects 0.000 claims description 7
- 239000004744 fabric Substances 0.000 claims description 6
- 238000009755 vacuum infusion Methods 0.000 claims description 5
- 238000002347 injection Methods 0.000 claims description 4
- 239000007924 injection Substances 0.000 claims description 4
- 238000004080 punching Methods 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 4
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 238000001723 curing Methods 0.000 claims description 3
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 2
- 239000004917 carbon fiber Substances 0.000 claims description 2
- 239000003365 glass fiber Substances 0.000 claims description 2
- 208000025274 Lightning injury Diseases 0.000 abstract description 5
- 238000009434 installation Methods 0.000 description 13
- 238000013461 design Methods 0.000 description 11
- 230000008901 benefit Effects 0.000 description 4
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 239000000835 fiber Substances 0.000 description 4
- 239000010410 layer Substances 0.000 description 4
- 238000009826 distribution Methods 0.000 description 3
- 239000003292 glue Substances 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000011230 binding agent Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000012790 adhesive layer Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000011162 core material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
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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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Abstract
The invention relates to the technical field of fan blade manufacturing, and particularly discloses a wind turbine segmented blade, an assembly method and a preparation method thereof, wherein the segmented blade comprises the following components: at least a first blade and a second blade; the at least one connecting assembly comprises a first connecting piece and a second connecting piece, the first connecting piece is provided with an insertion cavity, the second connecting piece is provided with an insertion part, and the insertion part is suitable for being inserted into the insertion cavity and is correspondingly bonded; the inner wall surface of the web plate is adhered to the outer wall surfaces of the two sides of the corresponding connecting piece, and the outer wall surfaces are adhered to the main beam; and an adhesive member adapted to fill in a gap between the first and second connection members. The inserting part of the connecting group is adhered to the inner wall surface of the inserting cavity, the web plates are adhered to the two side surfaces of the first connecting piece and the second connecting piece, then the gap is suitable for being filled with the adhesive piece, the outer wall surface of the web plates is adhered to the main beam, the first blade and the second blade are connected, the lightning stroke risk is effectively avoided, and the manufacturing and the assembly are easy.
Description
Technical Field
The invention relates to the technical field of fan blade manufacturing, in particular to a wind turbine segmented blade, an assembling method and a manufacturing method thereof.
Background
When the length of the fan blade exceeds 50m, the transportation cost of the blade is very outstanding, and in many remote places with inconvenient traffic, the transportation cost of the large-scale blade is higher, and some areas can not be even reached.
In order to solve the difficult problems of manufacturing and transporting the long blades of the large-scale wind turbine, the sectional type blades are generated, the large-scale wind turbine adopts sectional type blades, the technical conditions of the existing equipment can be fully utilized to produce longer blades, and the requirements of the production of the blades on the process, the equipment and the tools are reduced. The length of the segmented blade is changed into half of the original length or shorter, the transportation difficulty and the cost are obviously reduced, and the difficulty of on-site hoisting can be reduced by adopting the multi-section blade. Therefore, the adoption of the segmented connection technology on the long blade has important significance for the efficient utilization of the propelling wind energy and the improvement of the economic benefit.
In the prior art, various connection modes are developed aiming at sectional blade designs, wherein T-shaped bolt connection and tubular connection structures have better comprehensive performance, and due to the influences of disassembly and field construction, the connection mode of the embedded bolt sleeve double flange does not have cost advantages due to excessive weight increment, so that the T-shaped bolt, tubular connection and embedded bolt sleeve double-end stud connection structures have better application prospects, and in the three design modes, a large number of mechanical connection designs exist, so that unbalanced blade weight distribution can be caused, and meanwhile, due to the introduction of metal pieces, the lightning stroke risk of the blade is also greatly increased.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to overcome the defects that in the fan blade in the prior art, various connection modes are developed aiming at the sectional blade design, wherein the T-shaped bolt connection and the tubular connection structure have better comprehensive performance, and the connection mode of the embedded bolt sleeve double flange does not have cost advantage due to excessive weight increase due to the influence of disassembly and site construction, so the T-shaped bolt, the tubular connection and the embedded bolt sleeve double-end stud connection structure have better application prospect. In the three design modes, a large number of mechanical connection designs exist, so that the weight distribution of the blade is unbalanced, and meanwhile, the lightning strike risk of the blade is greatly increased due to the introduction of metal parts, so that the segmented blade of the wind turbine, the assembly method and the preparation method of the segmented blade of the wind turbine are provided.
A wind turbine segmented blade comprising: at least a first blade and a second blade; at least one connecting component is positioned at the butt joint position of the first blade and the second blade, the first blade and the second blade are connected through the connecting component, each connecting component comprises a first connecting piece and a second connecting piece which are spliced, the first connecting piece is provided with an inserting cavity, the second connecting piece is provided with an inserting part, the inserting part is suitable for being inserted into the inserting cavity, and the inserting part is bonded with the inner wall surface of the inserting cavity;
The web plates are arranged in one-to-one correspondence with the first connecting pieces and the second connecting pieces, wherein the inner wall surfaces of the web plates are bonded with the outer wall surfaces of the two sides of the corresponding connecting pieces, and the outer wall surfaces of the web plates are bonded on the main beam;
And an adhesive member adapted to fill in a gap between the first and second connection members to adhere the first and second connection members.
Optionally, in the wind turbine segmented blade, a longitudinal section of the insertion cavity is of a polygonal structure, and the insertion portion is adapted to the longitudinal section of the insertion cavity.
Optionally, in the above wind turbine segmented blade, all the webs include a main body and two end portions, and any one of the end portions is disposed at an oblique angle to the main body.
Optionally, in the wind turbine segmented blade, the main bodies of the two webs located on the same connecting piece form a first installation space and a second installation space which are suitable for bonding the corresponding connecting piece, one end of the first connecting piece is suitable for extending out of the first installation space, and one end of the second connecting piece is suitable for extending out of the second installation space.
Optionally, in the wind turbine segmented blade, the insertion part is a composite structure, and includes an insertion body and a composite layer wrapped on the insertion body, so as to form the insertion part of the composite structure.
Optionally, in the wind turbine segmented blade, the composite layer is a fiber cloth, and the fiber cloth is bonded with the insertion body.
Optionally, in the above wind turbine segmented blade, the wind turbine segmented blade further comprises a skin, and the skin is bonded at least at the joint of the first blade and the second blade.
A method of assembling a segmented blade for a wind turbine, comprising the steps of:
s1: and bonding webs on two side surfaces of the first connecting piece and the second connecting piece respectively, and sliding the insertion part of the second connecting piece towards the insertion cavity of the first connecting piece. So that the insertion portion is inserted into the insertion cavity;
s2: sealing the connection gap, introducing structural resin by using a vacuum infusion method, or injecting structural adhesive by using a punching and adhesive injection mode;
s3: and (3) coating adhesive on the bonding position of the middle section of the skin, putting down the edge of the alignment joint, putting into a pressurizing and locking tool, extruding the adhesive, and assembling the segmented blade of the wind turbine.
A method of making a connection assembly comprising the steps of:
s1: sequentially laying a composite structural material and a pouring auxiliary material on a lower die, introducing resin by adopting a vacuum pouring process, and heating and curing;
S2: vacuum pouring and forming by using an upper die;
s3: and bonding the butt joint of the upper die and the lower die, heating and curing integrally, and demolding to form the connecting assembly.
The technical scheme of the invention has the following advantages:
1. The invention provides a wind turbine sectional blade, which comprises: at least a first blade and a second blade; at least one connecting component is positioned at the butt joint position of the first blade and the second blade, the first blade and the second blade are connected through the connecting component, each connecting component comprises a first connecting piece and a second connecting piece which are spliced, the first connecting piece is provided with an inserting cavity, the second connecting piece is provided with an inserting part, the inserting part is suitable for being inserted into the inserting cavity, and the inserting part is bonded with the inner wall surface of the inserting cavity; the web plates are arranged in one-to-one correspondence with the first connecting pieces and the second connecting pieces, wherein the inner wall surfaces of the web plates are bonded with the outer wall surfaces of the two sides of the corresponding connecting pieces, and the outer wall surfaces of the web plates are bonded on the main beam;
And an adhesive member adapted to fill in a gap between the first and second connection members to adhere the first and second connection members.
In the wind turbine segmented blade of this structure, connect first blade and second blade through coupling assembling, and the internal face bonding of insert portion and insert the intracavity, bond the web simultaneously on the both sides face of first connecting piece and second connecting piece, then be suitable for filling the bonding piece in the clearance department between first connecting piece and the second connecting piece, the external wall and the girder bonding connection of web, in order to accomplish the connection of first blade and second blade, utilize this coupling assembling and bonding piece can connect first blade and second blade, the risk of lightning stroke can effectually be avoided to the mode of bonding, and whole weight is lower, the sectional type design and the manufacturing of fan blade have been realized, easily make and assemble, in the fan blade of prior art has been overcome, in adopting T bolt, tubular connection and pre-buried bolt sleeve stud connection structure all there is a large amount of mechanical connection designs, can cause blade weight distribution imbalance, simultaneously because the introduction of metal piece, the blade lightning stroke also greatly increased defect.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of a first blade module formed by connecting a first connecting member and a web according to a first embodiment of the present invention;
FIG. 2 is a schematic view of a second blade module formed by connecting a web to a second connector according to the first embodiment of the present invention;
FIG. 3 is a schematic view showing the position structure of the second connecting member and the upper and lower stationary molds;
FIG. 4 is a schematic view of a longitudinal cross-sectional configuration of the web after connection to the first connector;
FIG. 5 is a schematic view of the connection structure of the upper and lower molds;
FIG. 6 is a schematic view of the structure of an upper movable mold and a lower movable mold formed by integral pouring;
Reference numerals illustrate:
1. a first connector; 101. an insertion cavity;
2. a second connector; 201. an insertion section;
3. A web; 301. a main body; 302. an end portion;
4. a first installation space; 5. a second installation space;
6. an upper movable mold; 7. a lower fixed die; 8. an upper mold; 9. and a lower die.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In addition, the technical features of the different embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
Example 1
This embodiment describes a segmented blade of a wind turbine, see fig. 1-4, which comprises at least a first blade and a second blade, at least a connecting assembly and a web 3 and an adhesive, wherein the connecting assembly is adapted to be mounted at the butt joint of the first blade and the second blade and by which the first blade and the second blade are connected, each connecting assembly comprises a first connecting member 1 and a second connecting member 2 which are inserted, in particular, the first connecting member 1 has an insertion cavity 101, the second connecting member 2 has an insertion portion 201, the insertion portion 201 is adapted to be inserted into the insertion cavity 101 and the insertion portion 201 is adhered to the inner wall surface of the insertion cavity 101, the web 3 is arranged in one-to-one correspondence with the first connecting member 1 and the second connecting member 2, wherein the inner wall surface of the web 3 is adhered to the outer wall surfaces of both sides of the corresponding connecting members and the adhesive is adapted to be filled in the gap between the first connecting member 1 and the second connecting member 2 to adhere the first connecting member 1 and the second connecting member 2.
The wind turbine segmented blade in this embodiment connects first blade and second blade through coupling assembling, and insert portion 201 bonds with the interior wall face of inserting in the chamber 101, bond web 3 simultaneously on the both sides face of first connecting piece 1 and second connecting piece 2, then pack appropriate binder in the clearance department between first connecting piece 1 and second connecting piece 2, the outer wall face and the girder bonding connection of web 3 again, with accomplish the connection of first blade and second blade, utilize this coupling assembling and binder can connect first blade and second blade, the risk of lightning stroke can effectually be avoided to the mode of bonding, and overall weight is lower, the sectional type design and the manufacturing of fan blade have been realized, easy manufacturing and equipment.
Specifically, the adhesive member may be a structural resin adhesive or a structural adhesive, and the structural resin adhesive or the structural adhesive is directly filled in the connection gap between the first connecting member 1 and the second connecting member 2.
In this embodiment, the longitudinal section of the insertion cavity 101 may be in a polygonal structure, and meanwhile, the insertion portion 201 is adapted to the longitudinal section of the insertion cavity 101, after the insertion portion 201 is inserted into the insertion cavity 101, the insertion portion 201 and the insertion cavity 101 with the adapted shapes can ensure that after the connection is completed, the connection stability between the insertion portion 201 and the insertion cavity 101 is higher, so as to prevent the unstable connection caused by the relative rotation between the insertion portion 201 and the insertion cavity 101.
In the wind turbine segmented blade of the present embodiment, all the webs 3 include the main body 301 and two end portions 302, and any one of the end portions 302 is disposed at an inclination angle with respect to the main body 301, specifically, the inclination angle may be set to be greater than 90 °, and when specifically bonding, the inner wall surfaces of the main body 301 of the webs 3 may be connected to the corresponding additional connectors, and the outer wall surfaces of the two end portions 302 are connected to the corresponding main beams.
In this embodiment, the bodies 301 of the two webs 3 on the same connector form a first installation space 4 and a second installation space 5 adapted to bond the corresponding connectors, wherein the insertion cavity 101 of one end of the first connector 1 is adapted to extend out of the first installation space 4, and the insertion portion 201 of one end of the second connector 2 is adapted to extend out of the second installation space 5.
In order to increase the structural strength of the insertion portion 201, the insertion portion 201 may be a composite structure, and the insertion portion 201 of the composite structure includes an insertion body and a composite layer wrapped on the insertion body to form the insertion portion 201 of the composite structure, and in a specific application, the composite layer may be provided as a fiber cloth, which is adhered to the insertion body.
In the wind turbine segmented blade of the embodiment, the wind turbine segmented blade further comprises a skin, and a section of skin is bonded at least at the joint of the first blade and the second blade.
In this embodiment, the first connecting piece and the second connecting piece may be made of carbon fiber or glass fiber.
The insertion chamber 101 in the present embodiment may be provided in a quadrangular shape.
Example 2:
The embodiment describes an assembling method of a wind turbine segmented blade, referring to fig. 1-3, comprising the following steps:
S1: the webs 3 are bonded to both side surfaces of the first connector 1 and the second connector 2, respectively, and the insertion portion 201 of the second connector 2 is slid toward the insertion cavity 101 of the first connector 1. So that the insertion portion 201 is inserted into the insertion cavity 101;
s2: sealing the connection gap, introducing structural resin by using a vacuum infusion method, or injecting structural adhesive by using a punching and adhesive injection mode;
S3: and (3) coating adhesive on the bonding position of the middle section of the skin, putting down the edge of the alignment joint, putting into a pressurizing and locking tool, extruding the adhesive, and assembling the wind turbine segmented blade as described in the embodiment 1.
The assembly method in this embodiment is simple to operate, when specifically installing, the first blade is bonded with the first connecting piece 1 and the web 3, and the second blade is connected with the second connecting piece 2, so that the first blade module and the second blade module are respectively formed between the first blade module and the second blade module, and then the first blade module and the second blade module are respectively placed on an installation tool, and the first blade module and the second blade module are checked, so that the technical installation requirement is confirmed to be met.
Then the inserting part 201 of the second blade module slides towards the inserting cavity 101 of the first blade, so that the inserting part 201 can be inserted into the inserting cavity 101, the connecting bolts on the mounting bracket are screwed down, then the connecting gap is sealed, structural resin is introduced by using a vacuum infusion method, or structural glue is infused by using a punching glue injection mode, and the modular blade is convenient to assemble and install.
And finally, smearing adhesive on the bonding position of the middle section of the skin, putting down the edge of the interface of the first blade and the second blade, putting into a pressurizing and locking tool, extruding the adhesive, and ensuring that the molded surface is qualified. And (3) using the silica gel to seal the connecting seam, and after solidification, dismantling the corresponding installation tool to complete the connection of the first blade and the second blade.
In a specific application, the first blade and the second blade have a windward side and a leeward side, and are required to be installed on both the windward side and the leeward side correspondingly through the connecting component and the web 3.
Specifically, the first connecting piece 1 and the second connecting piece 2 may be respectively bonded to the web 3, in the bonding process, the first connecting piece 1 with the insertion cavity 101 is respectively bonded to the inner side of the end web 3, in the bonding process, the space position degree and the thickness of the adhesive layer are ensured by using tools, and in the same way, the second connecting piece 2 with the insertion portion 201 is bonded to the starting point side of the web 3.
After the first connecting piece 1 and the second connecting piece 2 are respectively bonded with the web plates 3, the web plates 3 are correspondingly bonded at bonding positions of the first blade and the second blade, bonding glue is smeared after the bonding positions are inspected to be qualified, die assembly bonding is carried out, so that the first blade module and the second blade module are manufactured, the first blade module and the second blade module are correspondingly inserted, and the assembly of the segmented blade is completed.
Example 3:
This embodiment describes a method for manufacturing a connection assembly, see fig. 5, comprising the steps of:
s1: sequentially laying a composite structural material and a pouring auxiliary material on a lower die, introducing resin by adopting a vacuum pouring process, and heating and curing;
S2: vacuum pouring and forming by using an upper die;
s3: and bonding the butt joint of the upper die and the lower die, heating and curing integrally, and demolding to form the connecting assembly.
Specifically, the composite structure is fiber and core material, the pouring auxiliary material comprises demolding cloth, a porous film and a diversion net, a vacuum pouring process is adopted, resin is led into a lower mold, and a mold heating system is started for curing according to a curing system for standby.
Referring to fig. 5, the upper mold 8 is used to manufacture the U-shaped upper part, vacuum infusion molding is adopted, adhesive is applied to the bonding area of the lower mold 9 or the bonding foot of the upper mold 8, the upper and lower molds are bonded into a whole, the mold is locked, the gap is checked, then the first connecting piece 1 is removed after heating and curing, the butt joint and the flash position of the first connecting piece 1 relative to the second connecting piece 2 are machined and shaped, the profile and the contour are checked, and the requirement of design tolerance is confirmed to be met, so as to manufacture the first connecting piece 1.
Similarly, the upper mold 8 is used to manufacture the solid second connecting piece 2, then the lower mold 9 is covered on the upper mold 8, and after heating and curing, the second connecting piece 2 is obtained by demolding.
Of course, the first connecting piece 1 and the second connecting piece 2 in this embodiment may also be integrally molded by pouring, referring to fig. 3 and 6, preparing the second connecting piece 2, laying corresponding structural materials and pouring materials on the lower fixed mold, putting the insert body, laying corresponding composite materials such as fiber cloth around the insert body, putting the upper movable mold 6, locking and fixing the lower fixed mold 7 and the upper movable mold 6, sealing, vacuum-inspecting, introducing resin, heating and curing, removing the upper movable mold 6, extracting the insert body, removing the solid second connecting piece 2, machining and repairing the interface and flash, inspecting the profile and contour, and confirming that the design tolerance requirement is satisfied.
The same procedure is used to make the first connector 1, and it is necessary to prepare the first connector 1 with one more center movable mold for forming the insert cavity 101 of the first connector 1, unlike the preparation of the second connector 2.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the invention.
Claims (7)
1. A segmented wind turbine blade comprising:
at least a first blade and a second blade;
At least one connecting component is positioned at the butt joint position of the first blade and the second blade and is used for connecting the first blade and the second blade through the connecting component, each connecting component comprises a first connecting piece (1) and a second connecting piece (2) which are inserted, the first connecting piece (1) and the second connecting piece (2) are made of carbon fibers or glass fibers, the first connecting piece (1) is provided with an inserting cavity (101), the second connecting piece (2) is provided with an inserting part (201), the inserting part (201) is suitable for being inserted into the inserting cavity (101), the inserting part (201) is adhered to the inner wall surface of the inserting cavity (101), and the inserting part (201) is of a composite structure and comprises an inserting body and a composite layer wrapped on the inserting body;
The web plates (3) are arranged in one-to-one correspondence with the first connecting piece (1) and the second connecting piece (2), wherein the inner wall surfaces of the web plates (3) are adhered to the outer wall surfaces of the two sides of the corresponding connecting piece, the outer wall surfaces of the web plates are adhered to the main beam, all the web plates (3) comprise a main body (301) and two end parts (302), and any one of the end parts (302) and the main body (301) are arranged at an inclined angle of more than 90 degrees;
And an adhesive member adapted to fill in a gap between the first connector (1) and the second connector (2) to adhere the first connector (1) and the second connector (2).
2. Wind turbine segmented blade according to claim 1, wherein the longitudinal section of the insertion cavity (101) is of polygonal configuration, the insertion portion (201) being adapted to the longitudinal section of the insertion cavity (101).
3. A wind turbine segmented blade according to claim 1, wherein the bodies (301) of two of said webs (3) on the same connector form a first mounting space (4) and a second mounting space (5) adapted to bond to a corresponding connector, one end of said first connector (1) being adapted to extend out of said first mounting space (4) and one end of said second connector (2) being adapted to extend out of said second mounting space (5).
4. The segmented wind turbine blade of claim 1, wherein the composite layer is a fibrous cloth bonded to the insert body.
5. The segmented wind turbine blade of claim 4, further comprising a skin bonded at least at the interface of the first blade and the second blade.
6. A method of assembling a segmented blade for a wind turbine, comprising the steps of:
S1: respectively bonding webs (3) on two side surfaces of the first connecting piece (1) and the second connecting piece (2), and sliding an insertion part (201) of the second connecting piece (2) towards an insertion cavity (101) of the first connecting piece (1) so that the insertion part (201) is inserted into the insertion cavity (101);
s2: sealing the connection gap, introducing structural resin by using a vacuum infusion method, or injecting structural adhesive by using a punching and adhesive injection mode;
S3: coating adhesive on the bonding position of the middle section of the skin, putting down the edge of the alignment joint, putting into a pressurizing and locking tool, extruding the adhesive, and assembling the wind turbine segmented blade according to any one of claims 1-5.
7. A method of making a connection assembly comprising the steps of:
s1: sequentially laying a composite structural material and a pouring auxiliary material on a lower die, introducing resin by adopting a vacuum pouring process, and heating and curing;
S2: vacuum pouring and forming by using an upper die;
s3: and bonding the butt joint of the upper die and the lower die, heating and curing integrally, and demolding to form the connecting assembly.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210715649.6A CN115839301B (en) | 2022-06-22 | 2022-06-22 | Wind turbine segmented blade and assembling method and preparation method thereof |
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| CN202210715649.6A CN115839301B (en) | 2022-06-22 | 2022-06-22 | Wind turbine segmented blade and assembling method and preparation method thereof |
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| CN115839301B true CN115839301B (en) | 2024-04-19 |
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| CN101070816A (en) * | 2006-04-30 | 2007-11-14 | 通用电气公司 | Modular rotor blade for a wind turbine and method for assembling same |
| CN101905538A (en) * | 2010-01-14 | 2010-12-08 | 连云港中复连众复合材料集团有限公司 | Process for integrally manufacturing megawatt wind turbine blade |
| CN102734084A (en) * | 2012-06-26 | 2012-10-17 | 昆明理工峰潮科技有限公司 | Sectional blade of wind driven generator |
| CN108087191A (en) * | 2017-12-25 | 2018-05-29 | 江苏金风科技有限公司 | The method and wind power generating set of subsection blade, connection segment blade |
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| US20130216388A1 (en) * | 2012-02-20 | 2013-08-22 | General Electric Company | Box-shaped shear web for wind turbine blades and method of making |
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| CN101070816A (en) * | 2006-04-30 | 2007-11-14 | 通用电气公司 | Modular rotor blade for a wind turbine and method for assembling same |
| CN101905538A (en) * | 2010-01-14 | 2010-12-08 | 连云港中复连众复合材料集团有限公司 | Process for integrally manufacturing megawatt wind turbine blade |
| CN102734084A (en) * | 2012-06-26 | 2012-10-17 | 昆明理工峰潮科技有限公司 | Sectional blade of wind driven generator |
| CN108087191A (en) * | 2017-12-25 | 2018-05-29 | 江苏金风科技有限公司 | The method and wind power generating set of subsection blade, connection segment blade |
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