CN214726637U - Root splicing type wind power blade - Google Patents

Root splicing type wind power blade Download PDF

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Publication number
CN214726637U
CN214726637U CN202120587453.4U CN202120587453U CN214726637U CN 214726637 U CN214726637 U CN 214726637U CN 202120587453 U CN202120587453 U CN 202120587453U CN 214726637 U CN214726637 U CN 214726637U
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China
Prior art keywords
root
blade
spliced
layer
prefabricated
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CN202120587453.4U
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Chinese (zh)
Inventor
刘广
刘梅
朱宝乐
宁慧森
刘玉娟
赵亚男
何占启
程朗
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Guoneng United Power Technology Baoding Co ltd
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国电联合动力技术(保定)有限公司
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Abstract

The utility model discloses a root concatenation formula wind-powered electricity generation blade, include: the root prefabricated parts are provided with a plurality of root circles which form the wind power blades through splicing; the blade main body is arranged on the inner side of the spliced root prefabricated member; and the inner reinforcement and the outer reinforcement are respectively arranged on the inner side and the outer side of the part to be spliced of the adjacent root prefabricated parts. The utility model is not only suitable for the root punching blade, but also suitable for the pre-buried blade of the bolt sleeve; the root prefabricated part adopts a quarter circle, so that the deformation can be reduced, and the shape following performance of the root prefabricated part and the shell mold is improved; when the glass fiber cloth of the prefabricated part at the root is laid, the gradient is reduced, the glass fiber cloth can be prevented from sliding downwards, the wrinkles of the glass fiber cloth are reduced, and the strength of the root is improved; by using the design of the root prefabricated member, the adjusting and shape-repairing time of the prefabricated member can be reduced, the production efficiency is improved, and the pouring defect is reduced.

Description

Root splicing type wind power blade
Technical Field
The utility model relates to a wind power generation blade field especially relates to a root concatenation formula wind-powered electricity generation blade.
Background
At present, the layering of the root of the wind power generation blade can be more than one hundred layers. Therefore, most of the glass fiber cloth of the blade root is usually fabricated as a preform using a separate mold, and then the root preform is put into a shell mold and molded together with other components. Therefore, the use efficiency of the shell mold can be improved, the root part of the blade is prevented from spreading folds, and scrapping caused by filling and air leakage is reduced.
In the existing fan blade production process, the root prefabrication technology is generally applied, but the following problems exist: on the one hand, as the service time increases, the root preform mold deforms and the fit with the shell mold deteriorates. On the other hand, the root prefabricated part is semicircular and is easy to deform. Under the two conditions, the root prefabricated part is not molded when being placed into the shell mold, the gap is large, subsequent glass fiber cloth laying and vacuum pouring are not facilitated, and the quality of the blade is affected.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a root concatenation formula wind-powered electricity generation blade that root prefab and casing mould are high, fill the defect low along with type nature.
In order to achieve the above object, the utility model discloses a root concatenation formula wind-powered electricity generation blade's concrete technical scheme does:
a root-spliced wind turbine blade comprising: the root prefabricated parts are provided with a plurality of root circles which form the wind power blades through splicing; the blade main body is arranged on the inner side of the spliced root prefabricated member; and the inner reinforcement and the outer reinforcement are respectively arranged on the inner side and the outer side of the part to be spliced of the adjacent root prefabricated parts.
Further, the mould closing glue is also included and can be used for fixedly splicing the root prefabricated parts together.
Further, the root prefabricated parts are arranged among the front edge parting line, the rear edge parting line, the SS surface splicing seam and the PS surface splicing seam.
Furthermore, the front edge parting line and the rear edge parting line are the parting lines of the front edge and the rear edge of the SS surface shell and the PS surface shell respectively.
Furthermore, the SS surface splicing seam and the PS surface splicing seam are respectively positioned on the SS surface shell and the PS surface shell and positioned between two adjacent bolt holes or bolt sleeves.
Further, the starting point of the root prefabricated part and the layer laying starting point of the blade main body are located at the same position, and the layer laying starting points are all zero points.
Further, the starting point of the root preform is different from the layer layup point of the blade body.
Further, the layer layup point is located near the end of the root preform.
Further, the layer laying starting point is located at the position staggered with the layer laying starting point.
Further, a splicing reinforcing layer is arranged at the layer paving starting point of the blade main body in a chordwise direction.
The utility model discloses a root concatenation formula wind-powered electricity generation blade's advantage lies in:
1) the method is suitable for the root punching blade and the bolt sleeve embedded blade;
2) the root prefabricated part adopts a quarter circle, so that the deformation can be reduced, and the shape following performance of the root prefabricated part and the shell mold is improved;
3) when the glass fiber cloth of the prefabricated part at the root is laid, the gradient is reduced, the glass fiber cloth can be prevented from sliding downwards, the wrinkles of the glass fiber cloth are reduced, and the strength of the root is improved;
4) by using the design of the root prefabricated member, the adjusting and shape-repairing time of the prefabricated member can be reduced, the production efficiency is improved, and the pouring defect is reduced.
Drawings
Fig. 1 is a schematic overall structure diagram of a first embodiment of a root-spliced wind turbine blade according to the present invention;
fig. 2 is a schematic overall structure diagram of a second embodiment of the root-spliced wind turbine blade of the present invention;
FIG. 3 is a schematic structural view of the root preform of the present invention after molding;
fig. 4 is a schematic structural view of the embodiment of the present invention when the root-spliced wind turbine blade is manufactured.
In the figure: 1. a root preform; 2. a blade main body; 3. die assembling glue; 4. internal reinforcement; 5. external reinforcement; 6. a root preform mold; 7. a blade shell mold; 8. and splicing the reinforcing layer.
Detailed Description
For better understanding the utility model discloses a purpose, structure and function, below combine the figure, right the utility model discloses a further detailed description is done to root concatenation formula wind-powered electricity generation blade.
As shown in fig. 1 to 4, it is shown that the root splicing type wind power blade of the present invention is suitable for both a root punching blade and a bolt sleeve pre-embedded blade, and includes a root prefabricated member 1, a blade main body 2, a mold closing glue 3, an inner reinforcement 4 and an outer reinforcement 5, wherein the root prefabricated member 1 is provided with a plurality of (4 shown in the figure), is prefabricated on a root prefabricated member mold 7, and can be spliced to form a root circle of the wind power blade; the blade main body 2 is arranged on the inner side of the spliced root prefabricated member 1, and splicing of the wind power blade is completed in the spliced root prefabricated member 1; the mold closing glue 3 can be used for fixedly splicing the root prefabricated parts 1 together; and the inner reinforcement and the outer reinforcement are respectively arranged on the inner side and the outer side of the part to be spliced of the adjacent root prefabricated parts.
Specifically, each blade comprises a plurality of root preforms 1, each root preform 1 being approximately quarter-circle shaped to form a root circle of the wind turbine blade. The number and shape of the root preforms 1 are not limited to these, and the number may be increased according to the shape and bolt distribution. The adjacent root preforms 1 can be fixed together by the die-filling glue 3.
Further, a plurality of root prefab 1 set up respectively at leading edge parting line, trailing edge parting line, SS face concatenation seam and PS face concatenation seam between, and accessible die-closing glue 3 bonds, is located 2 root prefab 1 on SS face and the PS face, also can not bond, directly pours the shaping into with 2 integrations of blade main part. The front edge parting line and the rear edge parting line are the parting lines of the front edge and the rear edge of the SS surface shell and the PS surface shell respectively; the SS face splicing seam and the PS face splicing seam are respectively positioned on the SS face shell and the PS face shell and positioned between two adjacent bolt holes or bolt sleeves, and the bolt holes and the bolt sleeves are avoided.
Further, in the first embodiment of the present invention, the starting position of the connection between the root prefabricated member 1 and the blade main body 2 is zero point of the blade, that is, the starting point of the root prefabricated member 1 and the layer-laying starting point of the blade main body 2 are zero points (i.e. located at the same position). In a slightly different way from the first embodiment, the second embodiment of the present invention is a blade in which the connection starting position of the root preform 1 and the blade body 2 is non-zero (i.e., the starting point of the root preform 1 is different from the layer-spread starting point of the blade body 2), that is, the starting point of the root preform 1 is zero, but the layer-spread starting point of the blade body 2 is not zero. Depending on the design, the layer start point of the blade body 2 may be located near the end point of the root preform 1, or at a staggered layer where the rest of the layers are staggered from the start point of the root preform 1.
In the first embodiment, the blade body 2 is provided inside the root preform 1, and includes blade components such as a glass fiber cloth layer, a core material, and a girder. The root prefabricated part 1 and the root of the blade main body 2 form a root circle of the wind power blade.
Further, the utility model discloses in, on SS face and PS face casing, 2 root prefabs 1 glue 3 bonding (also can not use the clamping to glue, directly splice) backs through the clamping, pours into an organic whole through the vacuum with inboard blade main part 2 again, the forming process of SS face and PS face casing promptly. And at the parting line at the front edge and the rear edge, the root prefabricated part 1 and the blade main body 2 are directly bonded together through a die-closing glue 3 as a whole after molding, so that a die-closing bonding process of an SS surface and a PS surface is formed.
Further, in order to reinforce the connection position of the root prefabricated member 1, an inner reinforcement 4 is arranged on the inner side of the part to be spliced of the adjacent root prefabricated members 1, and an outer reinforcement 5 is arranged on the outer side. Wherein, the inner reinforcement 4 and the outer reinforcement 5 are multilayer biaxial cloth and are manufactured by hand pasting or vacuum infusion.
As shown in fig. 2 and 4, which illustrate the second embodiment of the present invention, a connection reinforcing layer 8 is installed at the layer-laying starting point of the blade body 2 in a chordwise direction to reinforce the connection position while increasing the infiltration property of vacuum infusion. Wherein, the connection strengthening layer 8 is a plurality of layers of 200-300mm wide biaxial cloth. The blade body 2 is laid at the end point of the root preform 1, and the layer laying point is not a zero point but near the end point of the root preform 1, or other staggered layer laying modes.
The utility model also discloses a root concatenation formula wind-powered electricity generation blade's preparation method, including following step:
step one, after the root prefabricated part 1 is layered, the root prefabricated part is manufactured and molded.
Specifically, firstly, glass fiber cloth and other materials required by the perforated blade or bolt sleeve embedded blade root prefabricated part 1 are laid in the root prefabricated part mold 6, wherein the perforated blade is made of the glass fiber cloth, and the bolt sleeve embedded blade comprises the glass fiber cloth, a bolt sleeve, a UD rod, a foam wedge strip and the like. The shape of the root preform mold 6 is matched with the shape of the root preform 1, and is used for prefabricating and forming the root preform 1.
And, when laying root prefab 1, 2 layers of glass fiber cloth of downside lay to mould flange edge at least 200mm for follow-up fixed, location.
Then laying auxiliary materials such as demolding cloth, an isolation film, a flow guide net, a vacuum pipeline, a glue injection pipeline, a vacuum bag film and the like, and manufacturing the root prefabricated member 1 through vacuum infusion and precuring so as to form the molded root prefabricated member 1. The first embodiment and the second embodiment of the present invention take the quarter circle as an example.
And step two, modifying the shape of the root prefabricated part 1.
Specifically, tearing off part (except demolding cloth) auxiliary materials, cutting, polishing and trimming the shape of one side of the root prefabricated part 1, which is positioned at the SS surface splicing seam and the PS surface splicing seam, cutting off flash, and polishing and flattening the splicing surface.
And step three, after the root prefabricated part 1 is laid on the blade shell mold 7, splicing and cleaning the root prefabricated part.
Particularly, hoist root prefab 1 to blade shell mould 7 on, through locating pin etc. with root prefab 1 with blade shell mould laminating location, scribble the joint face and paint the mould glue (this step can be omitted), then hoist blade shell mould 7 with half root prefab 1 that matches on, fix a position and the compaction.
In addition, cleaning the extruded mold closing glue 3, starting a mold temperature machine for heating, and pre-curing the mold closing glue; and after the mold closing glue 3 is basically cured, tearing off the release cloth on the surface of the root prefabricated part 1, and if the mold closing glue is not used, omitting the mold closing glue in the step.
And step four, paving the blade main body 2 on the root prefabricated part 1.
Specifically, in the second embodiment, a plurality of biaxial fabrics are laid on the root preform 1 in the chord direction as the connection reinforcing layer 8 (this is not the case in the first embodiment), and then the laying of the blade body 2 is completed according to the design, including a glass cloth layer, a core material, a girder, and the like.
And step five, forming the blade shell.
Specifically, auxiliary materials such as demolding cloth, an isolation film, a flow guide net, a vacuum pipeline, an adhesive injection pipeline, a vacuum bag film and the like are laid, and the blade shell is molded through vacuum infusion and precuring.
And step six, closing the blade and manufacturing internal reinforcement.
After the operations of hoisting a blade web, scraping mold closing glue, closing the blade and the like are finished, manufacturing inner reinforcements 4 on the inner sides of front and rear edge mold closing seams and the inner sides of SS surface and PS surface splicing seams, and selecting biaxial cloth to be formed by hand pasting or vacuum infusion.
And seventhly, performing mold lifting and shape modification on the blade, and performing external reinforcement manufacturing.
Specifically, after post-curing, the blade is subjected to mold trimming, and outer reinforcements 5 are respectively manufactured on the outer sides of the front and rear edge mold closing seams and the outer sides of the SS surface splicing seams and the PS surface splicing seams, wherein the outer reinforcements 5 are formed by hand pasting or vacuum infusion of biaxial cloth.
The root splicing type wind power blade is suitable for both a root punching blade and a bolt sleeve pre-embedded blade; the root prefabricated part adopts a quarter circle, so that the deformation can be reduced, and the shape following performance of the root prefabricated part and the shell mold is improved; when the glass fiber cloth of the prefabricated part at the root is laid, the gradient is reduced, the glass fiber cloth can be prevented from sliding downwards, the wrinkles of the glass fiber cloth are reduced, and the strength of the root is improved; by using the design of the root prefabricated member, the adjusting and shape-repairing time of the prefabricated member can be reduced, the production efficiency is improved, and the pouring defect is reduced.
The present invention has been further described with reference to specific embodiments, but it should be understood that the specific description herein should not be construed as limiting the spirit and scope of the present invention, and that various modifications to the above-described embodiments, which would occur to persons skilled in the art after reading this specification, are within the scope of the present invention.

Claims (10)

1. The utility model provides a root concatenation formula wind-powered electricity generation blade which characterized in that includes:
the root prefabricated parts (1) are provided in plurality and form root circles of the wind power blades through splicing;
the blade main body (2) is arranged on the inner side of the spliced root prefabricated part (1); and
and the inner reinforcement (4) and the outer reinforcement (5) are respectively arranged on the inner side and the outer side of the part to be spliced of the adjacent root prefabricated member (1).
2. The root spliced wind turbine blade as claimed in claim 1, further comprising a mold compound (3) for fixedly splicing the root preforms (1) together.
3. The root spliced wind turbine blade as claimed in claim 1, wherein the root prefabricated member (1) is provided in plurality and is respectively arranged between a leading edge parting line, a trailing edge parting line, an SS surface splicing seam and a PS surface splicing seam.
4. The root splicing type wind power blade according to claim 3, wherein the front edge parting line and the rear edge parting line are the parting lines of the front edge and the rear edge of the SS-surface shell and the PS-surface shell respectively.
5. The root-spliced wind turbine blade according to claim 3, wherein the SS-surface splicing seam and the PS-surface splicing seam are respectively located on the SS-surface shell and the PS-surface shell and located between two adjacent bolt holes or bolt sleeves.
6. The root spliced wind turbine blade as claimed in claim 1, wherein the starting point of the root prefabricated member (1) and the layer-laying starting point of the blade main body (2) are located at the same position, and the layer-laying starting points are all zero points.
7. Root spliced wind blade according to claim 1, characterized in that the starting point of the root preform (1) is different from the layup starting point of the blade body (2).
8. Root spliced wind blade according to claim 7, wherein the layer start point is located near the end point of the root preform (1).
9. The root-spliced wind turbine blade according to claim 7, wherein the layer-laying starting point is located at a position where the root preform (1) and the layer-laying starting point are laid in a staggered manner.
10. The root-spliced wind turbine blade according to claim 8 or 9, wherein the spliced reinforcing layer (8) is laid chordwise at the layer-laying starting point of the blade body (2).
CN202120587453.4U 2021-03-23 2021-03-23 Root splicing type wind power blade Active CN214726637U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202120587453.4U CN214726637U (en) 2021-03-23 2021-03-23 Root splicing type wind power blade

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202120587453.4U CN214726637U (en) 2021-03-23 2021-03-23 Root splicing type wind power blade

Publications (1)

Publication Number Publication Date
CN214726637U true CN214726637U (en) 2021-11-16

Family

ID=78596373

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202120587453.4U Active CN214726637U (en) 2021-03-23 2021-03-23 Root splicing type wind power blade

Country Status (1)

Country Link
CN (1) CN214726637U (en)

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GR01 Patent grant
GR01 Patent grant
CP01 Change in the name or title of a patent holder

Address after: 071051 No.88, Fengfeng street, high tech Development Zone, Baoding City, Hebei Province

Patentee after: Guoneng United Power Technology (Baoding) Co.,Ltd.

Address before: 071051 No.88, Fengfeng street, high tech Development Zone, Baoding City, Hebei Province

Patentee before: GUODIAN UNITED POWER TECHNOLOGY (BAODING) Co.,Ltd.

CP01 Change in the name or title of a patent holder