CN216767624U - Large-scale modularization wind-powered electricity generation blade connection structure - Google Patents
Large-scale modularization wind-powered electricity generation blade connection structure Download PDFInfo
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- CN216767624U CN216767624U CN202220490520.5U CN202220490520U CN216767624U CN 216767624 U CN216767624 U CN 216767624U CN 202220490520 U CN202220490520 U CN 202220490520U CN 216767624 U CN216767624 U CN 216767624U
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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 utility model relates to the technical field of wind power blade manufacturing, in particular to a large-scale modularized wind power blade connecting structure, which comprises a blade root module, a blade leaf module and a blade tip module which are sequentially connected along the length direction of a wind power blade, wherein the blade leaf module sequentially comprises a front edge part, a front main beam part, a middle part, a rear main beam part and a rear edge part in the width direction of the blade leaf module; wherein, leading edge portion is the setting of opening arc section, and preceding main beam portion is connected with the open end of leading edge portion, and the intermediate part is connected with the other end of preceding main beam portion, and back main beam portion is connected with the other end of intermediate part, and the open end of trailing edge portion is connected with the other end of back main beam portion, and trailing edge portion, back main beam portion, intermediate part, preceding main beam portion and leading edge portion constitute confined blade structure. According to the utility model, the middle part and the rear main beam part are additionally arranged on the middle blade module, so that the size of the middle blade module in the width direction is lengthened, and the strength requirements of large-scale wind power blades in the manufacturing, assembling and using processes are met.
Description
Technical Field
The utility model relates to the technical field of wind power blade manufacturing, in particular to a large-scale modularized wind power blade connecting structure.
Background
The wind power blade is a core component for converting natural wind energy into electric energy of the wind generating set in the wind generating set, and is also a main basis for measuring the design and technical level of the wind generating set. With the development of wind power blade technology, the size limitation of the wind power blade is continuously broken through, and the sectional type wind power blade is gradually applied and popularized in order to conveniently manufacture and install large blades.
In the related art, a structure form of being divided into modules in the width direction of the blade is adopted, as shown in fig. 1, the structure form comprises a front edge body 01, a main beam 02 and a rear edge body 03 which are sequentially connected in the width direction of the blade, and the three are combined into a closed structure in a bonding form, so that the manufacturing efficiency is improved, and the transportation and the field assembly of the blade are facilitated;
however, for the large-sized modular wind power blade, the structural form cannot be expanded continuously in the width direction due to the limited bearing capacity of each structural module, and further development of the large-sized modular wind power blade is hindered.
The information disclosed in this background section is only for enhancement of understanding of the general background of the utility model and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art that is known to a person skilled in the art.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the utility model is as follows: the large-scale modularized wind power blade connecting structure is provided, and manufacturing of the large-scale modularized wind power blade is achieved.
In order to achieve the purpose, the utility model adopts the technical scheme that: a large-scale modularization wind power blade connection structure comprises a blade root module, a blade leaf module and a blade tip module which are sequentially connected along the length direction of the wind power blade, wherein the blade leaf module is arranged in a blocking manner along the length direction and sequentially comprises a front edge part, a front main beam part, a middle part, a rear main beam part and a rear edge part along the width direction;
wherein, the leading edge portion is the setting of opening arc section, preceding main roof beam portion with the open end of leading edge portion is connected, the intermediate part with the other end of preceding main roof beam portion is connected, back main roof beam portion with the other end of intermediate part is connected, the open end of trailing edge portion with the other end of back main roof beam portion is connected, trailing edge portion, back main roof beam portion, intermediate part, preceding main roof beam portion and leading edge portion constitute confined blade structure.
Further, both ends of the intermediate portion are provided as inclined surfaces.
Furthermore, the middle part sandwich structure comprises an inner core and a reinforcing layer coated on the outer surface of the inner core.
Further, the reinforcing layer is made of glass fiber reinforced plastic, and the inner core is made of balsa wood or honeycomb foam.
Further, preceding girder portion and back girder portion all include two girder caps and with two the web that the girder cap is connected.
Further, both ends of the girder cap are inclined surfaces, and are connected to the front edge portion, the middle portion, or the middle portion and the rear edge portion by the inclined surfaces.
Furthermore, the inclined plane is close to one side of wind-powered electricity generation blade inside and extends towards both ends and has the boss, the inboard both ends of intermediate part with the boss is connected.
Furthermore, two ends of the main beam cap are of a double-inclined-surface pointed structure, and the two inclined surfaces are respectively used for butt joint and are connected with the interior of the wind power blade through a connecting layer.
Further, the open ends of the front or rear edge portions are attached by bevel bonding or by bonding flanges.
Further, preceding main beam portion is the box girder construction, back main beam portion is the I-beam structure.
The utility model has the beneficial effects that: according to the utility model, the middle part and the rear main beam part are additionally arranged on the module in the blade, so that the size of the module in the blade in the width direction is lengthened, and the integral strength of the blade is improved through the support of the rear main beam part and the front main beam part.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a cross-sectional structural view of a wind turbine blade connection structure in the background of the utility model;
FIG. 2 is a schematic diagram of a top-view explosion structure of a large-scale modular wind turbine blade connection structure according to an embodiment of the utility model;
FIG. 3 is a cross-sectional view of a module in a middle leaflet according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of an intermediate portion according to an embodiment of the present invention;
FIG. 5 is an exploded view of a connection structure of the front main beam portion and the rear main beam portion according to an embodiment of the present invention;
FIG. 6 is a cross-sectional view of a module in the middle lobe according to a second embodiment of the present invention;
fig. 7 is a partially enlarged view of a portion a in fig. 6 according to a second embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Example one
2-5, the wind blade includes a blade root module 10, a blade leaf module 20 and a blade tip module 30 connected in sequence along the length direction, wherein the blade leaf module 20 is arranged in blocks in the length direction, as shown in fig. 3, the blade leaf module 20 is arranged in blocks in the length direction, each module includes a front edge portion 21, a front main beam portion 22, a middle portion 23, a rear main beam portion 24 and a rear edge portion 25 in sequence along the width direction on the basis of the block arrangement in the length direction; through the modularized arrangement, the middle part 23 and the rear main beam part 24 are additionally arranged in the width direction, so that the width direction is expanded, and the overall strength is improved through the support and connection of the front main beam part 22 and the rear main beam part 24;
with reference to fig. 3, in the embodiment of the present invention, the front edge portion 21 is an open arc segment, the front main beam portion 22 is connected to the open end of the front edge portion 21, the middle portion 23 is connected to the other end of the front main beam portion 22, the rear main beam portion 24 is connected to the other end of the middle portion 23, the open end of the rear edge portion 25 is connected to the other end of the rear main beam portion 24, and the rear edge portion 25, the rear main beam portion 24, the middle portion 23, the front main beam portion 22 and the front edge portion 21 form a closed blade structure. The closed blade structure here means that the outer surfaces of the leading edge portion 21, the leading spar portion 22, the intermediate portion 23, the trailing spar portion 24 and the trailing edge portion 25 form a smooth curved structure.
It should be noted that the connection may be in various forms, such as a connection in which the inclined surfaces are connected by an adhesive, a connection in which a connection flange is disposed at the end, or a connection by a reinforcing cloth, and the modular wind turbine blade according to the above structure forms falls within the protection scope of the present invention.
In the above embodiment, the middle part 23 and the rear main beam part 24 are additionally arranged on the module 20 in the blade, so that the size of the module 20 in the blade in the width direction is lengthened, and the strength of the whole blade is improved through the support of the rear main beam part 24 and the front main beam part 22.
In addition to the above-described embodiment, as shown in fig. 4, in order to improve the connection strength of the intermediate portion 23, in the embodiment of the present invention, both ends of the intermediate portion 23 are provided as inclined surfaces. The inclined plane is inclined along the thickness direction with the butt joint surface of the front main beam part 22 and the rear main beam part 24, so as to increase the contact area of the contact surface, and the contact area of the contact surface is larger and the bonding effect is more stable through the arrangement of the inclined plane;
with continued reference to fig. 4, in the embodiment of the present invention, in order to increase the strength of the middle portion 23 and reduce the weight of the middle portion 23, the middle portion 23 is of a sandwich structure including an inner core 23a and a reinforcing layer 23b covering the outer surface of the inner core 23 a. Specifically, the reinforcing layer 23b is made of glass fiber reinforced plastic, and the inner core 23a is made of balsa wood or honeycomb foam. Through the improvement of the internal structure of the middle part 23, on one hand, the whole weight of the middle part 23 is reduced, and on the other hand, through the arrangement of the glass fiber reinforced plastics, the whole structural strength is also improved;
regarding the construction of the spar, as shown in FIG. 5, in an embodiment of the present invention, the front and rear spar portions 22, 24 each include two spar caps 22a and a web 22b connecting the two spar caps 22 a. In this way, the spar caps 22a are connected with the front edge part 21, the rear edge part 25 and the middle part 23, the two spar caps 22a are supported and connected through the web plate 22b, when the web plate 22b is connected with the spar caps 22a, the connecting area of the two ends of the web plate 22b and the spar caps 22a can be increased through bending or other forms, and the tensile strength between the two opposite spar caps 22a is further enhanced;
in order to improve the connection strength between the spar cap 22a and the side members, in the embodiment of the present invention, the spar cap 22a has inclined surfaces at both ends thereof, and is connected to the front edge portion 21 and the intermediate portion 23 or the intermediate portion 23 and the rear edge portion 25 by the inclined surfaces. The inclined plane can be a single inclined plane like that shown in fig. 4, or can be a double inclined plane as shown in fig. 7, and the inclined plane can improve the bonding area, and on the other hand, the reinforcing layer can be laid on two butt-joint surfaces to improve the smoothness of the laying, so that the stress concentration is reduced when a force is applied; furthermore, in the embodiment of the utility model, the main beam can adopt the form of unidirectional UD yarn, fabric or a pultrusion plate, and the like, and the inclination ratio of the inclined surface is from 1: 1-1: 10, according to the specific structural form;
with reference to fig. 5, in the embodiment of the present invention, the inclined surface extends from the inner side of the wind turbine blade to the two ends to form the bosses 22a1, and the two ends of the inner side of the middle portion 23 are connected to the bosses 22a 1. Thus, when the intermediate portion 23 is fixed, not only the inclined surfaces of both ends of the intermediate portion 23 are attached to the inclined surfaces of the main beam caps 22a, but also the bottom surface of the inner side of the intermediate portion 23 is attached to the upper surface of the boss 22a1, that is, in addition to the structure of the inclined surfaces being bonded, the intermediate portion 23 has a lap joint form and is supported by two main beams, so that the fixing strength of the intermediate portion 23 is further improved;
of course, in addition to the above-mentioned overlapped form of the bosses 22a1, the two ends of the spar cap 22a in the embodiment of the present invention may also be in the structure as shown in fig. 7, and the two ends of the spar cap 22a are in the shape of a double-bevel tip, and the two bevels are respectively used for butt joint and connection with the inside of the wind turbine blade through the connection layer.
Regarding the connection form of the front edge portion 21 and the rear edge portion 25, in the embodiment of the present invention, the opening end of the front edge portion 21 or the rear edge portion 25 is bonded by a bevel, and the bevel bonding is the same as the structural form of the intermediate portion 23 and the main spar cap 22a, and is not described again; in the embodiment of the utility model, the front edge part 21 and the rear edge part 25 are both of an open integral structure, so that the wind turbine blade can be connected through the adhesive flange, specifically, the adhesive flange can be arranged in an inclined flange form fixed with an inclined surface, the inner side of the flange can extend towards the interior of the wind turbine blade, or the flange is attached to the boss 22a1 and then extends inwards, and through the arrangement of the adhesive flange, the strength of the open structure is improved, the strength of the connection part is better, and the connection strength of the open structure and other parts is enhanced.
Example two
As shown in fig. 6 and 7, in order to further increase the width limit value of the structural form in the foregoing, in the second embodiment of the present invention, the front main beam structure is improved, and the structural forms and connection manners of the remaining components are the same as those in the foregoing, and are not described again here;
as shown in fig. 6, the front main beam portion 22 is of a box beam structure, and the rear main beam portion 24 is of an i-beam structure. The box girder structure is characterized in that two webs 22b which are arranged in parallel at intervals are arranged between two main girder caps 22a, so that the front main girder body becomes a box body, and compared with a girder in an I-shaped girder structure form, the box girder structure has stronger bearing capacity and better integrity through the bearing of the box body, and the width of the front main girder part 22 can be properly increased, thereby providing a foundation for the increase of the integral width of the middle part of the blade; in the embodiment of the present invention, the rear main beam portion 24 still has a single web 22b structure, and it should be noted that the connection forms of the front main beam portion 22 and the rear main beam portion 24 with other components may adopt the connection forms shown in fig. 6 and 7, and may also adopt the connection forms described above, and the connection structures all fall into the protection scope of the present invention.
It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (10)
1. A large-scale modularization wind power blade connecting structure is characterized in that the wind power blade comprises a blade root module, a blade leaf module and a blade tip module which are sequentially connected along the length direction of the wind power blade, wherein the blade leaf module is arranged in a blocking manner along the length direction and sequentially comprises a front edge part, a front main beam part, a middle part, a rear main beam part and a rear edge part along the width direction of the blade leaf module;
wherein, the leading edge portion is the setting of opening arc section, preceding main roof beam portion with the open end of leading edge portion is connected, the intermediate part with the other end of preceding main roof beam portion is connected, back main roof beam portion with the other end of intermediate part is connected, the open end of trailing edge portion with the other end of back main roof beam portion is connected, trailing edge portion, back main roof beam portion, intermediate part, preceding main roof beam portion and leading edge portion constitute confined blade structure.
2. The large scale modular wind blade connection structure of claim 1, wherein both ends of the middle portion are provided as inclined surfaces.
3. The large-scale modular wind turbine blade connection structure according to claim 2, wherein the middle part sandwich structure comprises an inner core and a reinforcing layer coated on the outer surface of the inner core.
4. The large-scale modular wind turbine blade connection structure according to claim 3, wherein the reinforcement layer is made of glass fiber reinforced plastic, and the inner core is made of balsa wood or honeycomb foam.
5. The large modular wind blade connection structure of claim 1, wherein the front and rear spar portions each comprise two spar caps and a web connecting the two spar caps.
6. The large-scale modular wind turbine blade connection structure according to claim 5, wherein the two ends of the spar cap are inclined surfaces, and are connected with the front edge part, the middle part or the middle part and the rear edge part through the inclined surfaces.
7. The large-scale modular wind turbine blade connection structure according to claim 6, wherein bosses extend from one side of the inclined surface close to the interior of the wind turbine blade toward two ends of the inclined surface, and two ends of the inner side of the middle portion are connected with the bosses.
8. The large-scale modular wind turbine blade connection structure according to claim 6, wherein the two ends of the main beam cap are of a double-bevel tip structure, and the two bevels are respectively used for butt joint and connection with the interior of the wind turbine blade through a connection layer.
9. The large scale modular wind blade connection structure of claim 1, wherein the open ends of the leading edge portion or trailing edge portion are attached by bevel bonding or by adhesive flanges.
10. The large-scale modular wind turbine blade connection structure of claim 1, wherein the front main beam portion is of a box beam structure, and the rear main beam portion is of an I-beam structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220490520.5U CN216767624U (en) | 2022-03-08 | 2022-03-08 | Large-scale modularization wind-powered electricity generation blade connection structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202220490520.5U CN216767624U (en) | 2022-03-08 | 2022-03-08 | Large-scale modularization wind-powered electricity generation blade connection structure |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115596604A (en) * | 2022-10-19 | 2023-01-13 | 新创碳谷集团有限公司（Cn） | Multi-web structure modularized wind power blade |
| CN115898754A (en) * | 2023-03-13 | 2023-04-04 | 新创碳谷集团有限公司 | Blade module and forming method thereof |
| CN116146582A (en) * | 2023-04-17 | 2023-05-23 | 新创碳谷集团有限公司 | Sectional type wind power blade bolt connection structure and replacement method thereof |
-
2022
- 2022-03-08 CN CN202220490520.5U patent/CN216767624U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115596604A (en) * | 2022-10-19 | 2023-01-13 | 新创碳谷集团有限公司（Cn） | Multi-web structure modularized wind power blade |
| CN115898754A (en) * | 2023-03-13 | 2023-04-04 | 新创碳谷集团有限公司 | Blade module and forming method thereof |
| CN116146582A (en) * | 2023-04-17 | 2023-05-23 | 新创碳谷集团有限公司 | Sectional type wind power blade bolt connection structure and replacement method thereof |
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Effective date of registration: 20221028 Address after: 213127 No. 329, Huanghai Road, Xinbei District, Changzhou City, Jiangsu Province Patentee after: Xinchuang Carbon Valley Group Co.,Ltd. Address before: 213135, No. 28, Lijiang Road, textile industry garden, Xixia Town villa, Xinbei District, Jiangsu, Changzhou Patentee before: CHANGZHOU HONGFA ZONGHENG ADVANCED MATERIAL TECHNOLOGY Co.,Ltd. |