CN118088374A - Sectional type wind power blade connection structure and sectional type wind power blade - Google Patents
Sectional type wind power blade connection structure and sectional type wind power blade Download PDFInfo
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- CN118088374A CN118088374A CN202410293308.3A CN202410293308A CN118088374A CN 118088374 A CN118088374 A CN 118088374A CN 202410293308 A CN202410293308 A CN 202410293308A CN 118088374 A CN118088374 A CN 118088374A
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- 239000000853 adhesive Substances 0.000 claims description 14
- 230000001070 adhesive effect Effects 0.000 claims description 14
- 239000011162 core material Substances 0.000 claims description 13
- 238000005452 bending Methods 0.000 claims description 3
- 230000004323 axial length Effects 0.000 abstract description 3
- 238000012545 processing Methods 0.000 abstract description 2
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 230000011218 segmentation Effects 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000005611 electricity Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D1/00—Wind motors with rotation axis substantially parallel to the air flow entering the rotor
- F03D1/06—Rotors
- F03D1/065—Rotors characterised by their construction elements
- F03D1/0675—Rotors characterised by their construction elements of the blades
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D13/00—Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components
- F03D13/10—Assembly of wind motors; Arrangements for erecting wind motors
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- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Wind Motors (AREA)
Abstract
The invention relates to the technical field of wind power blades, in particular to a sectional wind power blade connecting structure and a sectional wind power blade, wherein the sectional structure comprises a first connecting end and a second connecting end, the sections of the first connecting end and the second connecting end are of a reversed-shaped structure, the second middle connecting section, the second front connecting section and the second rear connecting section are respectively matched and butted with the first middle connecting section, the first front connecting section and the first rear connecting section to form a reversed-shaped splicing line, the axial connection of the wind power blade is realized, the structure can realize the three-part structure of the front edge, the middle part and the rear edge of the blade, one of the three-part structure is still integrated with the section position of the same axial length of the blade, the staggered processing of the section position of the blade is realized, the structure can better ensure the strength and the structural stability of the blade, the mechanical property of the blade is effectively ensured, and the service life of the sectional wind power blade is prolonged.
Description
Technical Field
The invention relates to the technical field of wind power blades, in particular to a sectional wind power blade connecting structure and a sectional wind power blade.
Background
With the development of wind power industry, the current main machine has larger power and longer blades, great difficulty is brought to the production and manufacture of the blades, especially the transportation of the blades, and the production and manufacture cost and the transportation cost are greatly increased, while the segmented blades are effective methods and means for solving the problems, as shown in fig. 1, a schematic cross-sectional structure of the wind power blade comprises a front edge of the blade, a middle part of the blade, a rear edge of the blade, a main beam groove, an auxiliary beam groove, a main web plate, a small web plate and the like, wherein the main beam groove and the auxiliary beam groove are respectively internally provided with a main beam and an auxiliary beam.
The existing sectional type blade is generally broken at the same axial section position, so that the strength and the structural stability of the blade at the connecting point are insufficient, and the overall performance and the service life of the blade are affected.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
Disclosure of Invention
The invention provides a sectional type wind power blade connecting structure and a sectional type wind power blade, so that the problems pointed out in the background art are effectively solved.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
A segmented wind power blade connection structure, comprising:
The wind power blade comprises a first blade section and a second blade section which are arranged along the length direction of the wind power blade, wherein the first blade section is provided with a first connecting end, the second blade section is provided with a second connecting end, and the splicing line of the first connecting end and the second connecting end is of a Chinese character 'ji' -shaped structure;
The first connecting end comprises a first middle connecting section with a convex middle part, a first front edge connecting section and a first rear edge connecting section which are concave at two sides and are arranged in a staggered manner; the first middle connecting section is formed by dividing along the outer side surfaces of the main web plate and the small web plate, so that the main web plate and the small web plate are reserved on two sides of the first middle connecting section;
the second connecting end comprises a second middle connecting section with a concave middle part, and second front edge connecting sections and second rear edge connecting sections which are arranged at two sides in a protruding and staggered mode;
the second middle connecting section, the second front edge connecting section and the second rear edge connecting section are respectively matched and butted with the first middle connecting section, the first front edge connecting section and the first rear edge connecting section in shape;
The first middle connecting section, the first front edge connecting section and the first rear edge connecting section are respectively provided with male connectors, the second middle connecting section, the second front edge connecting section and the second rear edge connecting section are respectively provided with female connectors, the male connectors are inserted into the female connectors, and the male connectors are bonded and fixed by structural adhesive between the female connectors.
Further, the sections of the second front edge connecting section and the second rear edge connecting section are C-shaped structures and V-shaped structures with one side being opened, two ends of the opening are provided with vertical flange sections which are inwards arranged, and the flange sections are fixedly bonded with the main web plate or the small web plate through structural adhesive.
Further, the flange section, the second front edge connecting section and the second rear edge connecting section are integrally bent and formed.
Further, the novel combined type connecting piece comprises a connecting section main beam groove and a connecting section auxiliary beam groove, wherein a main beam connecting section is arranged in the main beam groove, an auxiliary beam connecting section is arranged in the auxiliary beam groove, the main beam connecting section and two ends of the auxiliary beam connecting section are respectively connected with a disconnected main beam and an auxiliary beam, the length dimension of the main beam connecting section and the auxiliary beam connecting section is larger than the dimension of a Chinese character 'ji' -shaped spliced line area, and the main beam connecting section and the auxiliary beam connecting section are formed by overlapping pultruded plates.
Further, the pultrusion plate is poured and cured in the die to form the main beam connecting section and the auxiliary beam connecting section, and then the main beam connecting section and the auxiliary beam connecting section are respectively placed in the main beam groove of the connecting section and the auxiliary beam groove of the connecting section to be poured and cured for the second time with the blade shell, so that the main beam connecting section and the auxiliary beam connecting section are respectively connected with the disconnected main beam and auxiliary beam, and meanwhile, the connection with the blade shell is realized.
Further, the main beam connecting section and the auxiliary beam connecting section further comprise core materials positioned on two sides of the pultrusion plate in the width direction, and the core materials are arranged close to two sides of the main beam groove of the connecting section and the auxiliary beam groove of the connecting section in the width direction.
Further, the core material and the pultrusion plate at two sides are integrally poured and molded.
Further, the main beam connecting section and the auxiliary beam connecting section are respectively and axially connected with two ends of the main beam and the auxiliary beam at two sides through a split gradient staggered structure.
Further, the end parts of the pultrusion plates of each layer are gradually shortened, the end parts of the pultrusion plates of each layer are provided with inclined sections, and the main beam connecting sections and the auxiliary beam connecting sections are correspondingly arranged with the gradient staggered layer structures of the main beams and the auxiliary beams.
The invention also comprises a sectional wind power blade, which comprises at least two blade sections, wherein the two adjacent blade sections are connected by adopting the sectional wind power blade connecting structure.
By the technical scheme of the invention, the following technical effects can be realized: the utility model provides a blade front edge, the blade middle part, blade trailing edge segmentation department is not in the same axial cross section position of blade through several style of calligraphy mosaic structure, this kind of structure can realize blade front edge, blade middle part, blade trailing edge triplex, when one of them is in segmentation position, other two parts are still integrative with axial length cross section position at the blade, this kind of structure has realized that the blade segmentation position staggers the processing, compare in the segmentation form of blade at same axial cross section position whole disconnection, this kind of structure can be better guarantee blade intensity and blade structural stability, the effectual blade mechanical properties that has guaranteed the life-span of sectional type wind-powered electricity generation blade.
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 required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings may be obtained according to the drawings without inventive effort to those skilled in the art.
FIG. 1 is a schematic cross-sectional view of a wind turbine blade in the background art;
FIG. 2 is a schematic illustration of a segmented wind blade connection;
FIG. 3 is a front view of a segmented wind blade connection;
FIG. 4 is a schematic view of a first connection end and a first connection end spliced together;
FIG. 5 is a chordwise schematic view of a second leading edge connection segment, a second trailing edge connection segment proximate the first intermediate connection segment;
FIG. 6 is a schematic view of chordwise connection of a second leading edge connection segment, a second trailing edge connection segment, and a first intermediate connection segment;
FIG. 7 is an enlarged view of a portion at A in FIG. 6;
FIG. 8 is a partial enlarged view at B in FIG. 6;
FIG. 9 is a schematic view of a chordwise cross section of a main beam connection section or an auxiliary beam connection section;
FIG. 10 is a schematic axial cross-sectional view of a main beam connection section or an auxiliary beam connection section;
FIG. 11 is a partial enlarged view at C in FIG. 10;
FIG. 12 is a schematic structural view of a segmented wind turbine blade.
Reference numerals: 1. a first leaf segment; 11. a first connection end; 111. a first middle connecting section; 112. a first leading edge connection section; 113. a first trailing edge connecting section; 114. an interface male; 12. a connecting section main beam groove; 13. the connecting section assists the beam groove; 2. a second leaf segment; 21. a second connection end; 211. a second middle connecting section; 212. a second leading edge connection section; 212a, a flange section; 213. a second trailing edge connecting section; 214. inserting an interface female; 3. structural adhesive; 4. a main beam connecting section; 41. a pultruded panel; 42. a core material; 43. a split-gradient staggered structure; 431. an inclined section; 5. an auxiliary beam connecting section; 6. splicing lines;
01. a blade leading edge; 02. the middle part of the blade; 03. blade trailing edge; 04. a main beam groove; 05. an auxiliary beam groove; 06. a primary web; 07. a small web; 08. a main beam; 09. an auxiliary beam;
10. She Genduan; 20, a step of; a blade tip section.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all 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 invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
As shown in fig. 2 to 11: a segmented wind power blade connection structure, comprising:
The wind power blade comprises a first blade segment 1 and a second blade segment 2 which are arranged along the length direction of the wind power blade, wherein the first blade segment 1 is provided with a first connecting end 11, the second blade segment 2 is provided with a second connecting end 21, and a splicing line 6 of the first connecting end 11 and the second connecting end 21 is of a shape like a Chinese character 'ji'; the splice lines 6 of the figure-of-a-few configuration can provide a larger contact area and tighter connection, thereby enhancing the connection stability between the blade segments, helping to reduce vibration and deformation of the blade under high-speed rotation and changing climatic conditions, and prolonging the service life of the blade.
The first connecting end 11 comprises a first middle connecting section 111 with a convex middle part, a first front edge connecting section 112 and a first rear edge connecting section 113 which are concave at two sides and are arranged in a staggered manner; wherein, the first middle connecting section 111 is formed by dividing along the outer side surfaces of the main web 06 and the small web 07, so that the main web 06 and the small web 07 are reserved on two sides of the first middle connecting section 111; a first connection end 11 forming a several-shaped structure;
In this embodiment, in one implementation manner of the dislocation arrangement, the heights of the first middle connecting section 111, the first trailing edge connecting section 113 and the first leading edge connecting section 112 are sequentially reduced, so that the splicing line 6 located at the blade leading edge 01, the blade middle 02 and the blade trailing edge 03 is not located at the same axial section position of the blade;
In another embodiment of the dislocation arrangement, the heights of the first middle connecting section 111, the first front edge connecting section 112 and the first rear edge connecting section 113 are sequentially reduced, so that the purpose that the splicing line 6 positioned at the front edge 01, the middle part 02 and the rear edge 03 of the blade is not positioned at the same axial section position of the blade can be achieved, and the purpose is within the protection scope of the application;
The second connecting end 21 comprises a second middle connecting section 211 with a concave middle part, a second front edge connecting section 212 and a second rear edge connecting section 213 which are arranged at two sides in a protruding and staggered way; a second connection end 21 forming a figure-shaped structure;
The second middle connecting section 211, the second front edge connecting section 212 and the second rear edge connecting section 213 are respectively matched and butted with the shapes of the first middle connecting section 111, the first front edge connecting section 112 and the first rear edge connecting section 113; through the mutual fit and butt joint of the shapes, the connection between the connecting sections of the blade can be ensured to be more compact, so that the stability of the whole blade is improved;
The mouths of the first middle connecting section 111, the first front edge connecting section 112 and the first rear edge connecting section 113 are respectively provided with an inserting port male head 114, the mouths of the second middle connecting section 211, the second front edge connecting section 212 and the second rear edge connecting section 213 are respectively provided with an inserting port female head 214, the inserting port male head 114 is inserted into the inserting port female head 214, and the design of the inserting port male head 114 and the inserting port female head 214 can provide more closely connected, so that the connection of the blades is firmer; and the male connector 114 and the female connector 214 are adhered and fixed by the structural adhesive 3; on one hand, the use of the structural adhesive 3 further enhances the fixation of the connection, and ensures that the connection part is not easy to loosen or fall off; on the other hand, the structural adhesive 3 may fill the gap between the male plug 114 and the female plug 214 to form a sealing layer, preventing moisture or other external media from penetrating into the joint, helping to protect the joint from corrosion or damage, and extending the service life of the blade.
Through setting up first link 11 and second link 21, the cross-section of first link 11 and second link 21 is the several style of calligraphy structure of opposite shape, when the male 114 plug of interface inserts in the female 214 plug interface, second middle part link 211, second leading edge link 212, second trailing edge link 213 respectively with first middle part link 111, first leading edge link 112, first trailing edge link 113 mutually agree with each other, form several style of calligraphy and splice line 6, and carry out the bonding with structural adhesive 3 between male plug 114 plug interface, plug interface female 214 and fix, realize wind-powered electricity generation blade axial connection, this kind of several style of calligraphy sectional structure can guarantee that blade leading edge 01, blade middle part 02, blade trailing edge 03 segmentation department is not in blade same axial cross-section position, this kind of structure can realize blade leading edge 01, blade middle part 02, blade trailing edge 03 triplex, when one of them is in the segmentation position, other two parts are in blade same axial length cross-section position integral, this kind of structure has realized that blade segmentation position staggers and has handled, compared with blade segmentation position, blade structure that has guaranteed that the blade has better performance and has guaranteed that the wind-powered electricity generation blade has guaranteed that the overall structure has good performance in the section form of the blade has guaranteed that the blade has guaranteed the axial stability.
In this embodiment, when the segmented blade structure is axially connected, the first front edge connecting section 112, the first middle connecting section 111 and the first rear edge connecting section 113 of the first blade segment 1 are provided with the beveled male plug 114, the second front edge connecting section 212, the second middle connecting section 211 and the second rear edge connecting section 213 of the second blade segment 2 are provided with the beveled female plug 214, the male plug 114 is matched with the female plug 214, and the male plug and the female plug are bonded by using the structural adhesive 3, so that the axial connection of the blade is realized.
As a preference of the above embodiment, the sections of the second leading edge connecting section 212 and the second trailing edge connecting section 213 are a C-shaped structure and a V-shaped structure with one opened side, two ends of the opening are provided with a vertical flange section 212a which is inwardly arranged, the flange section 212a and the main web 06 or the small web 07 are adhered and fixed by adopting structural adhesive 3, specifically, as shown in fig. 5 to 8, the second leading edge connecting section 212 is positioned on the right side, the second trailing edge connecting section 213 is positioned on the left side, the connecting structures of the second leading edge connecting section 212 and the second trailing edge connecting section 213 on two sides and the first middle connecting section 111 are specifically that two ends of the opening of the second leading edge connecting section 212 and the second trailing edge connecting section 213 are provided with vertical flange sections 212a, structural adhesive 3 is arranged between the flange section 212a and the main web 06 or the small web 07, and the main web 06 or the small web 07 of the first middle connecting section 111 are adhered and fixed by the structural adhesive 3, thereby the chord-wise stability and the connection strength of the second leading edge connecting section 212 and the second trailing edge connecting section 213 on two sides and the first middle connecting section 111 are enhanced;
The chord direction connection of the connecting section part of the segmented blade structure takes a stable box structure formed by the middle parts of a PS surface (windward surface) and an SS surface (leeward surface) of the connecting section part of the blade and a main web 06 and a small web 07 as a main body, and the second front edge connecting section 212 and the second rear edge connecting section 213 are bonded with the main web 06 or the small web 07 through bonding flange sections 212a by using structural adhesive 3, so that the chord direction connection of the front edge, the middle part and the rear edge of the connecting section of the blade connecting section is realized.
The flange section 212a is formed by integrally bending the second leading edge connecting section 212 and the second trailing edge connecting section 213, and specifically, the flange section 212a formed by integrally bending ensures that no interface or seam exists between the flange section 212a and the second leading edge connecting section 212 or the second trailing edge connecting section 213, thereby improving the stability and reliability of connection.
In this embodiment, still include linkage segment girder groove 12 and linkage segment and assist beam groove 13, be equipped with girder linkage segment 4 in the girder groove 04, assist beam groove 05 in be equipped with assist beam linkage segment 5, and girder linkage segment 4 and assist beam linkage segment 5's both ends respectively with the girder 08 of disconnection and assist beam 09 be connected, and girder linkage segment 4 and assist beam linkage segment 5's length dimension is greater than the regional size of several style of calligraphy splice lines 6, girder linkage segment 4 and assist beam linkage segment 5 are the stack of pultrusion board 41 and form, specifically, longer girder linkage segment 4 and assist beam linkage segment 5 can provide bigger connecting area, structural strength has been increased, help bearing the wind load that the blade bore in operation, reduce the deformation and the vibration of structure, thereby improve overall stability.
As the preference of the above embodiment, the pultrusion plate 41 forms the girder connecting section 4 and the auxiliary girder connecting section 5 after being poured and cured in the mould, then the girder connecting section 4 and the auxiliary girder connecting section 5 are respectively put into the connecting section girder groove 12 and the connecting section auxiliary girder groove 13 to be poured and cured for the second time with the blade shell, so as to realize the connection of the girder connecting section 4 and the auxiliary girder connecting section 5 with the disconnected girder 08 and the auxiliary girder 09 respectively, and simultaneously realize the connection with the blade shell.
In this embodiment, the main beam connecting section 4 and the auxiliary beam connecting section 5 further include core materials 42 located on both sides of the pultrusion panel 41 in the width direction, and the core materials 42 are disposed near both sides of the connecting section main beam groove 12 and the connecting section auxiliary beam groove 13 in the width direction.
The two side core materials 42 and the pultrusion plate 41 are integrally poured and formed, specifically, as shown in fig. 9, the main body of the main beam connecting section 4 and the auxiliary beam connecting section 5 is a pultrusion plate 41, two core materials 42 with the same thickness as the pultrusion plate 41 are arranged on two sides of the width direction of the pultrusion plate 41, and when the main beam connecting section 4 and the auxiliary beam connecting section 5 are prefabricated and poured, the two side core materials 42 and the pultrusion plate 41 are integrally poured, and the structural form can lead the main beam connecting section 4 and the auxiliary beam connecting section 5 to be placed in a blade beam groove, if the condition of size interference or over-wide gap on the two sides occurs, only the two side core materials 42 are required to be corrected, the pultrusion plate 41 is not affected, and the structural strength and rigidity of the main beam connecting section 4 and the auxiliary beam connecting section 5 are ensured not to be affected.
As a preference of the above embodiment, the main beam connecting section 4 and the auxiliary beam connecting section 5 are respectively axially connected with two ends of the main beam 08 and the auxiliary beam 09 on two sides through the split gradient staggered structure 43, specifically, as shown in fig. 10 to 11, the main beam connecting section 4 and the auxiliary beam connecting section 5 are axially schematic in section, and the main beam connecting section 4 and the auxiliary beam connecting section 5 are axially connected with the main beam 08 and the auxiliary beam 09 of the blade root section 10 and the blade tip section 20 through the split gradient staggered structure 43.
In this embodiment, the end of each layer of pultrusion plate 41 is gradually shortened, and the end of each layer of pultrusion plate 41 is provided with an inclined section 431, the main beam connecting section 4 and the auxiliary beam connecting section 5 are correspondingly arranged with the sub-gradient staggered layer structures 43 of the main beam 08 and the auxiliary beam 09, specifically, with continued reference to fig. 10 and 11, the axial cross-sectional schematic diagrams of the main beam connecting section 4 and the auxiliary beam connecting section 5 are shown in the middle upper part, the sub-gradient staggered layer structures 43 at the two ends of the main beam connecting section 4 or the auxiliary beam connecting section 5 are shown in the middle upper part, the sub-gradient staggered layer structures 43 are downwards arranged, the sub-gradient staggered layer structures 43 at the two ends of the main beam 08 or the auxiliary beam 09 are shown as being fixed in the main beam slot 04 or the auxiliary beam slot 05 of the blade, the sub-gradient staggered layer structures 43 at the two ends are upwards arranged, and the sub-gradient staggered layer structures 43 arranged downwards are in the shape of the sub-gradient staggered layer structures 43 arranged upwards, on the one hand, the method prevents the two ends of the main beam connecting section 4 or the auxiliary beam connecting section 5 located in the middle from being staggered, the stability and reliability of the connection point are ensured, and the possibility of loosening or failure at the connection point is reduced; on the other hand, the design of multi-layer superposition increases the connection area and improves the strength and stability of connection; in addition, the arrangement of the split-gradient staggered structure 43 makes the connection between the main beam connecting section 4 and the auxiliary beam connecting section 5 and the main beam 08 and the auxiliary beam 09 tighter, and helps to reduce vibration and deformation of the blade in the running process, so that the performance and stability of the blade are improved.
The invention also comprises a sectional wind power blade, which comprises at least two blade segments, wherein the two adjacent blade segments are connected by adopting the sectional wind power blade connecting structure, specifically, as shown in fig. 12, as an alternative implementation mode, the sectional wind power blade is divided into a blade root segment 10 and a blade tip segment 20, and the wind power blade can be further divided into a plurality of sections for splicing according to the actual condition of the wind power blade size, and the sectional wind power blade connecting structure is adopted for connection, so that the blade strength and the blade structural stability are ensured, and the blade mechanical property is effectively ensured.
The foregoing has outlined and described the basic principles, features, and advantages 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, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. A segmented wind power blade connection structure, comprising:
The wind power blade comprises a first blade section and a second blade section which are arranged along the length direction of the wind power blade, wherein the first blade section is provided with a first connecting end, the second blade section is provided with a second connecting end, and the splicing line of the first connecting end and the second connecting end is of a Chinese character 'ji' -shaped structure;
The first connecting end comprises a first middle connecting section with a convex middle part, a first front edge connecting section and a first rear edge connecting section which are concave at two sides and are arranged in a staggered manner; the first middle connecting section is formed by dividing along the outer side surfaces of the main web plate and the small web plate, so that the main web plate and the small web plate are reserved on two sides of the first middle connecting section;
the second connecting end comprises a second middle connecting section with a concave middle part, and second front edge connecting sections and second rear edge connecting sections which are arranged at two sides in a protruding and staggered mode;
the second middle connecting section, the second front edge connecting section and the second rear edge connecting section are respectively matched and butted with the first middle connecting section, the first front edge connecting section and the first rear edge connecting section in shape;
The first middle connecting section, the first front edge connecting section and the first rear edge connecting section are respectively provided with male connectors, the second middle connecting section, the second front edge connecting section and the second rear edge connecting section are respectively provided with female connectors, the male connectors are inserted into the female connectors, and the male connectors are bonded and fixed by structural adhesive between the female connectors.
2. The segmented wind power blade connecting structure according to claim 1, wherein the sections of the second front edge connecting section and the second rear edge connecting section are of a C-shaped structure and a V-shaped structure with one side open, two ends of the opening are provided with vertical flange sections which are inwards arranged, and the flange sections are adhered and fixed with a main web or a small web by structural adhesive.
3. The segmented wind power blade connection structure according to claim 2, wherein the flange segment, the second leading edge connection segment and the second trailing edge connection segment are integrally formed by bending.
4. The segmented wind power blade connection structure according to claim 1, further comprising a connection section main beam groove and a connection section auxiliary beam groove, wherein a main beam connection section is arranged in the main beam groove, an auxiliary beam connection section is arranged in the auxiliary beam groove, two ends of the main beam connection section and the auxiliary beam connection section are respectively connected with a disconnected main beam and an auxiliary beam, the length dimensions of the main beam connection section and the auxiliary beam connection section are larger than the dimension of a several-shaped splicing line area, and the main beam connection section and the auxiliary beam connection section are formed by overlapping pultruded plates.
5. The segmented wind power blade connection structure according to claim 4, wherein the pultrusion plate is poured and cured in a die to form the main beam connection section and the auxiliary beam connection section, and then the main beam connection section and the auxiliary beam connection section are respectively placed in a main beam groove of the connection section and an auxiliary beam groove of the connection section to be poured and cured for the second time with the blade shell, so that the main beam connection section and the auxiliary beam connection section are respectively connected with a disconnected main beam and an disconnected auxiliary beam, and meanwhile, the connection with the blade shell is realized.
6. The segmented wind power blade connection structure according to claim 4, wherein the main beam connection section and the auxiliary beam connection section further comprise core materials located on two sides of the pultruded panel in the width direction, and the core materials are arranged close to two sides of the main beam groove of the connection section and the auxiliary beam groove of the connection section in the width direction.
7. The segmented wind-power blade connection structure according to claim 6, wherein the core material and the pultruded panels are integrally molded on both sides.
8. The segmented wind power blade connection structure according to claim 4, wherein the main beam connection section and the auxiliary beam connection section are respectively connected with two ends of the main beam and the auxiliary beam on two sides in an axial direction through a split gradient staggered structure.
9. The segmented wind-power blade connection structure according to claim 8, wherein the end portions of each layer of the pultrusion plates are gradually shortened, the end portions of each layer of the pultrusion plates are provided with inclined sections, and the main beam connection sections and the auxiliary beam connection sections are arranged corresponding to the gradient staggered structures of the main beams and the auxiliary beams.
10. A segmented wind power blade comprising at least two blade segments, adjacent two of said blade segments being connected by a segmented wind power blade connection according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410293308.3A CN118088374A (en) | 2024-03-14 | 2024-03-14 | Sectional type wind power blade connection structure and sectional type wind power blade |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202410293308.3A CN118088374A (en) | 2024-03-14 | 2024-03-14 | Sectional type wind power blade connection structure and sectional type wind power blade |
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| CN118088374A true CN118088374A (en) | 2024-05-28 |
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| CN202410293308.3A Pending CN118088374A (en) | 2024-03-14 | 2024-03-14 | Sectional type wind power blade connection structure and sectional type wind power blade |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101718250A (en) * | 2010-01-11 | 2010-06-02 | 华锐风电科技(集团)股份有限公司 | Sectional type wind wheel vanes of wind power generator set and assembly method thereof |
| EP2746574A2 (en) * | 2012-12-21 | 2014-06-25 | General Electric Company | Joints for connecting blade segments of a wind turbine rotor blade |
| CA2854384A1 (en) * | 2013-06-17 | 2014-12-17 | Envision Energy (Denmark) Aps | Wind turbine blade with extended shell section |
| CN105508131A (en) * | 2016-01-18 | 2016-04-20 | 广东明阳风电产业集团有限公司 | A segmented combined wind turbine blade and its manufacturing method |
| CN216866895U (en) * | 2022-04-07 | 2022-07-01 | 常州市宏发纵横新材料科技股份有限公司 | Three-segment type modularized wind power blade |
| CN219381693U (en) * | 2023-04-14 | 2023-07-21 | 新创碳谷集团有限公司 | Double-web blade module bonding structure |
-
2024
- 2024-03-14 CN CN202410293308.3A patent/CN118088374A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101718250A (en) * | 2010-01-11 | 2010-06-02 | 华锐风电科技(集团)股份有限公司 | Sectional type wind wheel vanes of wind power generator set and assembly method thereof |
| EP2746574A2 (en) * | 2012-12-21 | 2014-06-25 | General Electric Company | Joints for connecting blade segments of a wind turbine rotor blade |
| CA2854384A1 (en) * | 2013-06-17 | 2014-12-17 | Envision Energy (Denmark) Aps | Wind turbine blade with extended shell section |
| CN105508131A (en) * | 2016-01-18 | 2016-04-20 | 广东明阳风电产业集团有限公司 | A segmented combined wind turbine blade and its manufacturing method |
| CN216866895U (en) * | 2022-04-07 | 2022-07-01 | 常州市宏发纵横新材料科技股份有限公司 | Three-segment type modularized wind power blade |
| CN219381693U (en) * | 2023-04-14 | 2023-07-21 | 新创碳谷集团有限公司 | Double-web blade module bonding structure |
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