CN114810472A - Blade, connecting assembly and blade forming method - Google Patents
Blade, connecting assembly and blade forming method Download PDFInfo
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- CN114810472A CN114810472A CN202210230398.2A CN202210230398A CN114810472A CN 114810472 A CN114810472 A CN 114810472A CN 202210230398 A CN202210230398 A CN 202210230398A CN 114810472 A CN114810472 A CN 114810472A
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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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- 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
Abstract
The application discloses blade, coupling assembling and blade forming method, blade include blade body and coupling assembling, and the blade body has more than two segmentation blades that distribute in succession, and every segmentation blade includes shell unit and web unit, and coupling assembling includes first connecting piece and second connecting piece. Through making first connecting piece and second connecting piece respectively with the web unit connection of two adjacent segmentation blades to make first connecting piece and second connecting piece towards one end interconnect each other, can realize the web unit and the shell element's of two adjacent segmentation blades connection through coupling assembling, the shell unit and the web unit of each segmentation blade connect gradually in order to form casing and web, thereby form whole blade with each segmentation blade connection. The blade that this application embodiment provided can improve and connect the reliability and reduce its influence to blade weight distribution, and low cost is more convenient for the equipment and the manufacturing of segmentation blade.
Description
Technical Field
The application relates to the field of wind power generation, in particular to a blade, a connecting assembly and a blade forming method.
Background
The blade is used as a component for capturing wind energy of the wind generating set and plays an extremely important role in the wind generating set. At present, as megawatt levels of wind generating sets increase, blades become increasingly long, which causes difficulty in manufacturing and transporting the blades. In order to solve the problems, the segmented blades are produced at the same time, the length of the segmented blades is changed into half or less than the original length, the transportation difficulty and the cost are obviously reduced, and the difficulty of field hoisting can be reduced.
For the sectional blade, the connection design between the blade is crucial to later stage design and research, and at present, bolted connection or the mode that bonds are usually adopted, however the connection mode of current sectional blade is difficult to reduce the influence to blade weight distribution when guaranteeing to connect the reliability, and the equipment and the manufacturing of the sectional blade of being convenient for.
Therefore, a blade, a connecting assembly and a method for forming a blade are needed.
Disclosure of Invention
The embodiment of the application provides a blade, a connecting assembly and a blade forming method, which can improve the connection reliability, reduce the influence of the connection reliability on the weight distribution of the blade, have low cost and are more convenient for assembling and manufacturing the sectional blade.
In a first aspect, an embodiment of the present application provides a blade, including: the blade body comprises a shell and a web plate arranged in the shell and connected with the shell, the blade body is provided with more than two segmented blades which are sequentially distributed along the axial direction of the blade body, every two adjacent segmented blades are connected with each other, each segmented blade comprises a shell unit and a web plate unit, the shell units of all the segmented blades are sequentially connected to form the shell, and all the web plate units are sequentially connected to form the web plate; the connecting assembly comprises a first connecting piece and a second connecting piece, one ends of the first connecting piece and one ends of the second connecting piece, which face each other, are connected with each other to form a joint, one end of the first connecting piece, which deviates from the second connecting piece, is connected with the web plate unit of one of the two adjacent segmented blades, and one end of the second connecting piece, which deviates from the first connecting piece, is connected with the web plate unit of the other of the two adjacent segmented blades.
According to one aspect of the embodiment of the present application, one end of the first connecting member and one end of the second connecting member facing each other are detachably connected.
According to an aspect of an embodiment of the application, one of the ends of the first and second connecting pieces facing each other is provided with a hollow cavity, the other is provided with a plug part adapted to the size of the hollow cavity, and the plug part is at least partially plugged into the hollow cavity to form the joint part.
According to an aspect of the embodiment of the application, the outer wall in hollow cavity is provided with at least one first pinhole, and the grafting portion is last to be provided with the second pinhole corresponding to first pinhole, and coupling assembling still includes the connecting pin, and the connecting pin wears to establish first pinhole and second pinhole in proper order to realize the fixed of first connecting piece and second connecting piece.
According to one aspect of the embodiment of the application, one ends of the first connecting piece and the second connecting piece facing each other are at least partially arranged to protrude out of the shell units along the axial direction, and a joint formed by connecting one ends of the first connecting piece and the second connecting piece facing each other is positioned between two adjacent shell units; the connecting assembly further comprises an outer skin which is arranged around the periphery of the joint part and extends for a predetermined distance along the radial direction of the sectional blade, so that the shell units of two adjacent sectional blades are connected through the outer skin.
According to an aspect of an embodiment of the present application, one ends of the adjacent two case units facing each other are provided with overlapping portions to which both ends of the outer skin in the axial direction are respectively overlapped.
According to one aspect of an embodiment of the present application, the first and second connectors comprise at least one of core material foam and thermoplastic deformation foam.
In a second aspect, an embodiment of the present application further provides a connection assembly, which is used for a blade body, where the blade body includes two or more segmented blades distributed successively along an axial direction of the blade body, each segmented blade includes a shell unit and a web unit disposed inside the shell unit, and the connection assembly includes: one end of the first connecting piece is used for being connected with the web plate unit of one of the two adjacent segmented blades; the end, facing away from the first connecting piece, of the second connecting piece is used for being connected with the web plate unit of the other of the two adjacent segmented blades, the end, facing each other, of the first connecting piece and the end, facing each other, of the second connecting piece are at least partially arranged in a protruding mode in the shell unit along the axial direction, and the ends, facing each other, of the first connecting piece and the second connecting piece are mutually jointed to form a joint portion located between the two adjacent shell units; and the outer skin is arranged around the periphery of the joint part and extends for a preset distance along the radial direction of the blade, so that two adjacent shell units are connected through the outer skin.
In a third aspect, an embodiment of the present application further provides a forming method of a blade, where the forming method includes: providing a connecting assembly and at least two web plate units, wherein the connecting assembly comprises a first connecting piece and a second connecting piece, one end of the first connecting piece is bonded to the inner side of one web plate unit to form a first transition piece, and one end of the second connecting piece is bonded to the inner side of the other web plate unit to form a second transition piece; providing at least two shell elements, bonding a first transition piece to the inner side of one shell element to form a first blade section, and bonding a second transition piece to the inner side of the other shell element to form a second blade section; connecting the ends of the first and second connectors facing each other to form a joint, each first blade segment and each second blade segment being connected to form a blade.
According to an aspect of the embodiments of the present application, at least two shell units are provided, wherein one ends of the first connecting piece and the second connecting piece facing each other at least protrude out of the shell unit bonding arrangement; after connecting the ends of the first and second connectors facing each other to form a joint, the method further comprises: and providing an outer skin, arranging the outer skin around the periphery of the joint part and extending for a preset thickness along the radial direction of the segmented blade so that two adjacent shell units are connected through the outer skin.
The blade that this application embodiment provided, including blade body and coupling assembling, the blade body has more than two segmentation blades that distribute in succession, every segmentation blade includes shell unit and web unit, coupling assembling includes first connecting piece and second connecting piece, first connecting piece and second connecting piece are connected respectively in the web unit of two adjacent segmentation blades, form the junction through first connecting piece and second connecting piece one end interconnect each other that faces each other, can be connected two adjacent segmentation blades to connect each segmentation blade and form the blade. Compared with a bolt connection mode, the connection of the segmented blades is realized by arranging the connecting assembly on the web plate unit of each segmented blade, the connecting force can be axially dispersed to the joint part, the connection reliability is improved, and meanwhile, the phenomenon that the weight is concentrated on the butt joint surface of the segmented blades is avoided, so that the influence of the weight distribution on the weight distribution is reduced. In addition, the connection of the sectional blades is realized by additionally arranging the connecting assembly, so that the cost is lower, and the assembly and the manufacture of the sectional blades are more convenient.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments of the present application will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic structural view of a blade provided in accordance with an embodiment of the present application;
FIG. 2 is a cross-sectional view of a segmented vane provided in accordance with an embodiment of the present application;
FIG. 3 is a schematic illustration of a connection of a web unit to a first connector provided in accordance with an embodiment of the present application;
FIG. 4 is a schematic illustration of a connection of a web element with a second connector provided according to an embodiment of the present application;
FIG. 5 is an enlarged view of a joint provided according to an embodiment of the present application;
FIG. 6 is an enlarged view of a joint including an outer skin provided in accordance with an embodiment of the present application;
FIG. 7 is a schematic structural view of a first mold provided in accordance with an embodiment of the present application;
FIG. 8 is a schematic structural view of a second mold provided in accordance with an embodiment of the present application;
FIG. 9 is a schematic illustration of a connection of a first section and a second section provided in accordance with an embodiment of the present application;
FIG. 10 is a schematic view of a connection of a first mold and a second mold provided in accordance with another embodiment of the present application;
FIG. 11 is a flow chart of a method of forming a blade provided by an embodiment of the present application;
FIG. 12 is a flow chart of a method of forming a blade according to another embodiment of the present application.
Wherein:
1-a blade body;
10-a segmented blade; 110-a shell element; 120-web elements;
2-connecting the components; 21-a first connector; 211-hollow cavity; 2111-first subsection; 2112-second subsection; 212-first pin hole; 22-a second connector; 221-a plug-in part; 222-a second pin hole; 23-a connecting pin; 24-an outer skin;
3-molding; 31-a first mold; 32-a second mold; 33-a support core;
x-axial direction.
Detailed Description
Features and exemplary embodiments of various aspects of the present application will be described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present application by illustrating examples thereof.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The connection of segmentation blade is realized to current segmentation equipment blade all adopting bolted connection or the mode of gluing basically, bolted connection is including pre-buried in the blade with the bolt, or the joint drilling bolt hole and setting up the bolt of wearing to lead to the heart at two adjacent segmentation blades, realize the connection of segmentation blade through screwing up the bolt, nevertheless through bolted connection's mode, there is a large amount of mechanical connection designs in the junction, can cause blade weight to distribute unevenly, simultaneously because the introduction of metalwork, the risk that the blade received the thunderbolt also correspondingly increases. And for the gluing mode, the field construction and the disassembly are not facilitated. Therefore, the existing connection mode of the sectional blade is difficult to ensure the connection reliability, reduce the influence on the weight distribution of the blade and facilitate the assembly and the manufacture of the sectional blade.
In order to solve the above technical problems, embodiments of the present invention provide a blade, a connecting assembly, and a method for forming a blade, and the blade, the connecting assembly, and the method for forming a blade in embodiments of the present invention will be described below with reference to fig. 1 to 12.
Referring to fig. 1 to 4, the present application provides a blade, including a blade body 1 and a connecting assembly 2, where the blade body 1 includes a shell and a web disposed inside the shell and connected to the shell, the blade body 1 has more than two segmented blades 10 distributed successively along an axial direction of the blade body, two adjacent segmented blades 10 are connected to each other, each segmented blade 10 includes a shell unit 110 and a web unit 120, the shell units 110 of the segmented blades 10 are connected in sequence to form a shell, and the web units 120 are connected in sequence to form a web. At least two adjacent segmented blades 10 are connected through a connecting assembly 2, the connecting assembly 2 comprises a first connecting piece 21 and a second connecting piece 22, one ends of the first connecting piece 21 and the second connecting piece 22 facing each other are connected to form a joint, one end of the first connecting piece 21 facing away from the second connecting piece 22 is connected with the web unit 120 of one of the two adjacent segmented blades 10, and one end of the second connecting piece 22 facing away from the first connecting piece 21 is connected with the web unit 120 of the other of the two adjacent segmented blades 10.
The blade 100 provided by the embodiment of the application comprises a blade body 1 and a connecting assembly 2, wherein the blade body 1 is provided with more than two segmented blades 10 which are distributed successively, each segmented blade 10 comprises a shell unit 110 and a web unit 120, the connecting assembly 2 comprises a first connecting piece 21 and a second connecting piece 22, the first connecting piece 21 and the second connecting piece 22 are respectively connected to the web units 120 of two adjacent segmented blades 10, and one ends of the first connecting piece 21 and the second connecting piece 22 facing each other are connected with each other to form a joint part, namely, the two adjacent segmented blades 10 can be connected, so that the segmented blades 10 are connected to form the blade 100. Compared with the bolt connection mode, the connection of the segmented blades 10 is realized by arranging the connecting component 2 on the web plate unit 120 of each segmented blade 10, the connection force can be dispersed to a joint part along the axial direction X, the connection reliability is improved, and meanwhile, the weight is prevented from being concentrated on the butt joint surface of the segmented blade 10, so that the influence of the weight distribution is reduced. In addition, the connecting assembly 2 is additionally arranged to realize the connection of the segmented blade 10, so that the cost is lower, and the assembly and the manufacture of the segmented blade 10 are more convenient.
In order to ensure the reliability of the connection between the first connecting member 21 and the second connecting member 22, the first connecting member 21 and the second connecting member 22 may be bonded to each other. In view of the assembly and disassembly issues of the segmented blade 10, in some alternative embodiments, the ends of the first and second connectors 21, 22 facing each other are removably connected. Through can dismantling first connecting piece 21 and second connecting piece 22 and be connected, can make each segmentation blade 10 accomplish the back, transport to the scene and assemble, and be more convenient for realize dismantling the change, reduce the construction degree of difficulty and improve the installation effectiveness.
Referring to fig. 3 and 4, in some alternative embodiments, one of the ends of the first connecting member 21 and the second connecting member 22 facing each other is provided with a hollow cavity 211, and the other end is provided with a plug portion 221 adapted to the size of the hollow cavity 211, and the plug portion 221 is at least partially plugged into the hollow cavity 211. That is, the first connecting member 21 and the second connecting member 22 can be configured to be inserted into each other, and the detachable connection of the first connecting member 21 and the second connecting member 22 can be realized by inserting the inserting portion 221 of one into the hollow cavity 211 of the other to form a joint portion. The insertion portion 221 may be a solid structure or a hollow structure to reduce the weight of the connection assembly 2.
For convenience of description, the first connection member 21 is provided with the hollow cavity 211, and the second connection member 22 is provided with the insertion portion 221 having a solid structure.
In order to realize the stable connection between the first connection member 21 and the second connection member 22, in some optional embodiments, the outer wall of the hollow cavity 211 is provided with at least one first pin hole 212, the insertion portion 221 is provided with a second pin hole 222 corresponding to the first pin hole 212, the connection assembly 2 further includes a connection pin 23, and the connection pin 23 sequentially penetrates through the first pin hole 212 and the second pin hole 222 to realize the fixation between the first connection member 21 and the second connection member 22. Optionally, the outer wall of the hollow cavity 211 is provided with more than two first pin holes 212, and the plurality of first pin holes 212 are arranged at intervals along the axial direction X, or at least two of the plurality of first pin holes 212 are arranged at intervals along the circumferential direction of the hollow cavity 211, so as to form a cross pin connection form, so as to avoid relative rotation between the first connecting piece 21 and the second connecting piece 22 from affecting the connection stability.
In other alternative embodiments, the first connecting member 21 and the second connecting member 22 may also be fixed by riveting or bolting, and it is sufficient that the first connecting member 21 and the second connecting member 22 are stably connected, and the specific connection form is not limited herein.
Referring to fig. 5 and 6, it can be understood that, when the first connecting member 21 and the second connecting member 22 are connected by the pin, one end of the first connecting member 21 and the second connecting member 22 facing each other needs to be protruded out of the end surface of the housing unit 110 to reserve a space for installing the connecting pin 23. At this time, when the first connection member 21 is engaged with the second connection member 22, there is a gap between the shell units 110 of the segmented blades 10 to which they are respectively connected, which affects the continuity of the surface of the blade 100.
In some alternative embodiments, the ends of the first connecting member 21 and the second connecting member 22 facing each other are at least partially protruded from the shell units 110 along the axial direction X, a joint formed by connecting the ends of the first connecting member 21 and the second connecting member 22 facing each other is located between two adjacent shell units 110, and the connecting assembly 2 further includes an outer skin 24 disposed around the periphery of the joint and extending a preset distance along the radial direction of the segmented blade 10, so that the shell units 110 of two adjacent segmented blades 10 are connected by the outer skin 24. By connecting two adjacent shell elements 110 by the outer skin 24, the gap between the shell elements 110 of two adjacent segmented blades 10 can be filled, and the surface continuity of the blade 100 is ensured.
Alternatively, the outer skin 24 may be bonded to the periphery of the joint portion of the first connecting member 21 and the second connecting member 22 by structural adhesive bonding, tape bonding, or the like. By connecting the outer skin 24 at the periphery of the joint of the first connecting piece 21 and the second connecting piece 22 by means of glue joint, a hybrid connecting mode which takes mechanical connection as the main part and glue joint as the auxiliary part can be formed. The connection mode can ensure the connection reliability of the segmented blade 10 through the mechanical connection of the first connecting piece 21 and the second connecting piece 22, and also has the characteristics of reliable quality and simple and convenient operation of glue joint, namely the advantages of mechanical connection and glue joint can be combined, and the quality, the efficiency and the cost are considered.
In some alternative embodiments, the ends of two adjacent shell elements 110 facing each other are provided with overlapping portions, and both ends of the outer skin 24 in the axial direction X are overlapped with the overlapping portions, respectively. When both ends of the outer skin 24 are respectively connected to the shell units 110 of the segmented blade 10, it is possible to more easily bridge the outer skin 24 to the bridge portions of the shell units 110 by providing the bridge portions at the ends of the shell units 110, thereby more easily assembling the blade 100.
Alternatively, the cross section of the outer skin 24 perpendicular to the circumferential direction of the blade 100 is in an inverted trapezoid or T shape, that is, the overlapping part of each segmented blade 10 is obliquely arranged, and the included angle between the surface of the overlapping part and the surface of the joint part is an obtuse angle, so that the contact area between the outer skin 24 and the shell unit 110 is increased, and the reliability of connection between the outer skin 24 and the shell unit 110 is increased while the arrangement of the outer skin 24 is facilitated.
In some alternative embodiments, the first connector 21 and the second connector 22 comprise at least one of a foam core and a plastic foam. The material of the first connecting member 21 and the second connecting member 22 may be a high-strength composite material, for example, at least one of a foam core material or a plastic foam, which can avoid the use of a metal connecting member that is easily struck by lightning, reduce the weight of the connecting member 2 while ensuring the connecting strength, and have certain flexibility to facilitate the demolding manufacture of the first connecting member 21 and the second connecting member 22.
Referring to fig. 1 to 6, the present invention further provides a connecting assembly 2 for a blade body 1, the blade body 1 includes more than two segmented blades 10 sequentially distributed along an axial direction X thereof, each segmented blade 10 includes a shell unit 110 and a web unit 120 disposed inside the shell unit 110, the connecting assembly 2 includes a first connecting member 21, a second connecting member 22 and an outer skin 24, one end of the first connecting member 21 is used for connecting with the web unit 120 of one of two adjacent segmented blades 10, one end of the second connecting member 22 facing away from the first connecting member 21 is used for connecting with the web unit 120 of the other of two adjacent segmented blades 10, one ends of the first connecting member 21 and the second connecting member 22 facing each other are at least partially protruded from the shell unit 110 along the axial direction X, one ends of the first connecting member 21 and the second connecting member 22 facing each other are joined to form a joint portion between two adjacent shell units 110, an outer skin 24 is disposed around the outer periphery of the joint portion and extends a predetermined distance in the radial direction of the segmented blade 10 so that adjacent two shell units 110 are connected by the outer skin 24.
By surrounding the outer skin 24 on the basis of the mechanical connection of the first connecting piece 21 and the second connecting piece 22, a hybrid connection is formed which is predominantly mechanical and secondarily glued. When the segmented vane 10 is connected by the connecting assembly 2, the connecting force can be dispersed to the joint portion in the axial direction X, the connecting reliability is improved, and the weight is prevented from being concentrated on the connecting surface of the segmented vane 10, thereby reducing the influence thereof on the weight distribution. By enclosing the outer skin 24 outside the joint, a reliable connection of the connection assembly 2 can be further achieved, while the outer skin 24 can also fill the gap between two adjacent shell elements 110 to form a surface-continuous blade 100.
Referring to fig. 7 to 9, a mold 3 for manufacturing the connecting assembly 2 of the above embodiments is further provided, and the connecting assembly 2 may be formed by bonding, integrally pouring, pultrusion, winding, and metal material molding. It is to be understood that, since the connection module 2 includes the first connection member 21 having the hollow cavity 211 and the second connection member 22 having the socket 221, the mold 3 for manufacturing the connection module 2 and the molding method thereof will be described by taking as an example the molding of the first connection member 21 having the hollow cavity 211 in consideration of the fact that the injection molding can be directly performed when the socket 221 is provided as the solid structure.
When the first connecting member 21 is manufactured by bonding molding, the mold 3 includes a first mold 31 and a second mold 32, and the first mold 31 and the second mold 32 are provided as hollow structures. The first mold 31 and the second mold 32 may be provided with a vacuum pumping port, a profile adjusting mechanism, a special mark and a heating temperature control device, so as to facilitate the demolding preparation of the first connecting member 21.
In some alternative embodiments, the cross section of the first mold 31 along the axial direction X may be pi-shaped, the cross section of the second mold 32 along the axial direction X may be inverted pi-shaped, or may be curved, the first part 2111 may be demolded by pouring the first mold 31, the second part 2112 may be demolded by pouring the second mold 32, and the ends of the first part 2111 and the second part 2112 facing each other may be joined to form the first connecting member 21 having the hollow cavity 211. Alternatively, the cross-sections of the first mold 31 and the second mold 32 may be adjusted to other shapes according to the specific structure of the first connecting member 21, and are not particularly limited herein.
Specifically, the manufacturing step of manufacturing the first connecting member 21 by bonding molding may include: laying a structural material and an infusion auxiliary material in the second mold 32 in sequence, introducing resin by a vacuum infusion process, and curing the resin to form a second section 2112; a structural material and an infusion auxiliary material are sequentially laid in the first mold 31, resin is introduced by a vacuum infusion process and is cured to form a first subsection 2111; coating adhesive glue on the second part 2112 and/or the adhesive area of the first part 2111, adhering the first part 2111 and the second part 2112 into a whole, and heating and curing to form a first connecting piece 21 with a hollow cavity 211; the first connecting member 21 is machined and profiled and checked until it meets the design tolerance requirements. Alternatively, the structural material may include fibers, core materials, and the like, and the auxiliary materials may include release cloths, porous films, and flow guide nets, and the like.
Referring to fig. 10, when the first connecting member 21 is manufactured by using the integral injection molding, the mold 3 includes a first mold 31, a second mold 32, and a support core 33, one ends of the first mold 31 and the second mold 32 facing each other are detachably connected, and the first mold 31 and the second mold 32 are joined to form an inner cavity structure, the support core 33 can be placed in the inner cavity structure, and the first connecting member 21 having the hollow cavity 211 can be formed by injecting a gap between the support core 33 and the inner cavity structure. The first mold 31 and the second mold 32 are provided with an operation flange in the circumferential direction of one end facing each other, and the flange includes a resin flow groove, a limiting groove, a special mark, a vacuum air suction interface, a heating temperature control device and the like, so that the connecting assembly 2 can be prepared in a demolding manner.
Specifically, the manufacturing step of manufacturing the first connecting member 21 by the integral injection molding may include: laying the structural material and the auxiliary pouring material in the second mold 32, putting the support core 33 in the second mold, and laying the structural material and the auxiliary pouring material around the support core 33; joining and locking the first mold 31 and the second mold 32, introducing resin into the cavity structure formed by the first mold 31 and the second mold 32, filling the gap between the support core 33 and the cavity structure, and heating and curing to release the first connecting member 21 having the hollow cavity 211; the first connecting member 21 is machined and profiled and checked until it meets the design tolerance requirements.
It is understood that the second connecting member 22 having the solid-structured socket part 221 can be formed by directly pouring the cavity structure formed by the first mold 31 and the second mold 32 by using the mold 3, and the manufacturing steps thereof are not specifically described herein.
In some alternative embodiments, the first mold 31 and the second mold 32 may be provided with positioning pin protrusions, and when the first connecting member 21 and/or the second connecting member 22 is ejected from the mold 3, marks are formed at corresponding positions thereof, and the first pin hole 212 and the second pin hole 222 may be formed at the marks by a special tool. Optionally, after checking that the position size and the like of the first pin hole 212 and the second pin hole 222 meet requirements, the first connecting piece 21 and the second connecting piece 22 may be inserted and the connecting pin 23 for inspection is used to sequentially penetrate through the first pin hole 212 and the second pin hole 222, so as to ensure that the assembly gap between the first pin hole 212 and the second pin hole 222 meets the design tolerance requirement, and further, the manufacturing of the first connecting piece 21 and the second connecting piece 22 is completed.
Referring to fig. 11, the present embodiment further provides a method for forming a blade 100, which is used to form the blade 100 in the foregoing embodiment, and the method includes:
s110, providing a connecting assembly 2 and at least two web plate units 120, wherein the connecting assembly 2 comprises a first connecting piece 21 and a second connecting piece 22, one end of the first connecting piece 21 is bonded to the inner side of one web plate unit 120 to form a first transition piece, and one end of the second connecting piece 22 is bonded to the inner side of the other web plate unit 120 to form a second transition piece;
s120, providing at least two shell units 110, bonding a first transition piece to the inner side of one shell unit 110 to form a first blade segment, and bonding a second transition piece to the inner side of the other shell unit 110 to form a second blade segment;
and S130, connecting one ends of the first connecting piece 21 and the second connecting piece 22 facing each other to form a joint, and connecting each first blade segment and each second blade segment to form the blade 100.
In steps S110 and S120, a first transition piece may be formed by bonding one end of the first connecting member 21 to the inner side of the web unit 120, and using a tool to ensure the spatial position degree and the thickness of the bonding glue layer, so as to bond the first transition piece to a designated position of the shell unit 110, thereby forming a first blade segment. Similarly, a second blade segment may be formed by bonding one end of the second connection member 22 to the inside of the web element 120 to form a second transition piece, and using tooling to ensure spatial locality and bond line thickness, and then bonding the second transition piece to the shell element 110 at a designated location.
In some optional embodiments, one of the ends of the first and second connection pieces 21 and 22 facing each other is provided with a hollow cavity 211, and the other is provided with a plug part 221 adapted to the size of the hollow cavity 211, and the connecting the ends of the first and second connection pieces 21 and 22 facing each other in step S130 includes: the engaging portion is formed by at least partially inserting the insertion portion 221 into the hollow cavity 211.
Optionally, before the insertion part 221 is at least partially inserted into the hollow cavity 211, the interface profile, contour and position of the first connector 21 and the second connector 22 may be checked for deformations or other defects using an inspection card. In addition, the segmented blade 10 with the first connecting member 21 and the segmented blade 10 with the second connecting member 22 can be inserted into the hollow cavity 211 at least partially by placing the segmented blade 10 with the first connecting member 21 and the segmented blade 10 with the second connecting member 22 on the bracket, respectively, and sliding the segmented blade 10 with the first connecting member 21 and the segmented blade 10 with the second connecting member 22 relative to each other after checking the relative position of the segmented blades 10.
Referring to fig. 12, in some alternative embodiments, at least two shell units 110 are provided, and one ends of the first connecting member 21 and the second connecting member 22 facing each other at least protrude from the shell units 110 for bonding; after connecting the ends of the first connecting member 21 and the second connecting member 22 facing each other to form a joint, the method further includes: an outer skin 24 is provided, and the outer skin 24 is disposed around the outer circumference of the joint and extends a predetermined thickness in the radial direction of the segmented blade 10 so that adjacent two shell units 110 are connected by the outer skin 24.
In steps S210 and S220, when the first connecting member 21 and the second connecting member 22 are respectively bonded to the inner sides of the web units 120, one end of the first connecting member 21 and one end of the second connecting member 22 facing each other may be at least partially protruded from the web units 120, so that when the first transition member and the second transition member are respectively bonded to the inner sides of the shell units 110, one end of the first connecting member 21 and one end of the second connecting member 22 facing each other may be at least partially protruded from the shell units 110.
In step S230, when the ends of the first connecting member 21 and the second connecting member 22 facing each other at least partially protrude from the shell units 110, the ends of the first connecting member 21 and the second connecting member 22 facing each other are connected to form a joint between two adjacent shell units 110. To fill the gap between two connected shell elements 110, step S230 further includes providing an outer skin 24 and connecting two adjacent shell elements 110 by the outer skin 24.
Alternatively, the surface of the outer skin 24 on the side facing the joint portion and both ends thereof in the axial direction X may be coated with adhesive glue, and the adhesion of the outer skin 24 may be achieved by enclosing the outer skin 24 in the joint portion and squeezing out excess adhesive glue by pressing the locking tool. Wherein, after the outer skin 24 is adhered to the periphery of the joint part, the method further comprises the following steps: the gap between the outer skin 24 and the shell element 110 is sealed by a filler to achieve a smooth transition of the segmented blade 10. Alternatively, the filler may be provided as silicone.
It can be understood that the blade 100 formed by the blade forming method in the embodiment of the present application can connect each segmented blade in a hybrid connection manner in which mechanical connection is mainly performed and adhesive bonding is performed as an auxiliary, and the connection manner can ensure the reliability of connection of the segmented blade 10 by mechanically connecting the first connecting member 21 and the second connecting member 22, and also has the characteristics of reliable quality and convenience in operation of adhesive bonding, that is, the blade 100 can combine the advantages of mechanical connection and adhesive bonding, and has quality, efficiency and cost. Meanwhile, by respectively abutting the two ends of the outer skin 24 in the axial direction X with the shell elements 110, the gap between the shell elements 110 of two adjacent segmented blades 10 can be filled, and the surface continuity of the blade 100 is ensured.
As will be apparent to those skilled in the art, for convenience and brevity of description, the specific working processes of the systems, modules and units described above may refer to corresponding processes in the foregoing method embodiments, and are not described herein again. It should be understood that the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive various equivalent modifications or substitutions within the technical scope of the present application, and these modifications or substitutions should be covered within the scope of the present application.
It should also be noted that the exemplary embodiments mentioned in this application describe some methods or systems based on a series of steps or devices. However, the present application is not limited to the order of the above-described steps, that is, the steps may be performed in the order mentioned in the embodiments, may be performed in an order different from the order in the embodiments, or may be performed simultaneously.
Claims (10)
1. A blade, comprising:
the blade body comprises a shell and a web arranged in the shell and connected with the shell, the blade body is provided with more than two segmented blades which are sequentially distributed along the axial direction of the blade body, every two adjacent segmented blades are connected with each other, each segmented blade comprises a shell unit and a web unit, the shell units of the segmented blades are sequentially connected to form the shell, and the web units are sequentially connected to form the web;
coupling assembling, at least two adjacent settings the segmentation blade passes through coupling assembling connects, coupling assembling includes first connecting piece and second connecting piece, first connecting piece with the second connecting piece is connected towards one end each other and is formed the joint, first connecting piece deviates from the one end and the adjacent two of second connecting piece in the segmentation blade the web unit connection, the second connecting piece deviates from the one end and the adjacent two of first connecting piece another in the segmentation blade the web unit connection.
2. The blade of claim 1, wherein the ends of the first and second connectors facing each other are removably connected.
3. A blade according to claim 2, wherein one of the ends of the first and second connectors facing each other is provided with a hollow cavity and the other is provided with a socket adapted to the size of the hollow cavity, the socket being at least partially plugged into the hollow cavity to form the joint.
4. The blade of claim 3, wherein the outer wall of the hollow cavity is provided with at least one first pin hole, the insertion part is provided with a second pin hole corresponding to the first pin hole, and the connecting assembly further comprises a connecting pin, and the connecting pin sequentially penetrates through the first pin hole and the second pin hole to fix the first connecting piece and the second connecting piece.
5. The blade according to claim 1, wherein the ends of the first and second connectors facing each other are at least partially disposed to protrude from the shell units in the axial direction, and the joint formed by connecting the ends of the first and second connectors facing each other is located between two adjacent shell units;
the connecting assembly further comprises an outer skin, the outer skin is arranged around the periphery of the joint portion and extends for a preset distance along the radial direction of the segmented blade, so that two adjacent shell units are connected through the outer skin.
6. The blade according to claim 5, wherein one ends of adjacent two shell units facing each other are provided with lap portions to which both ends of the outer skin in the axial direction are respectively lapped.
7. The blade of claim 1 wherein said first connector and said second connector comprise at least one of core foam and thermo-plastic foam.
8. A coupling assembling for the blade body, the blade body includes more than two along the segmentation blade that self axial distributes in succession, the segmentation blade include the shell unit and set up in the inboard web unit of shell unit, its characterized in that, coupling assembling includes:
one end of the first connecting piece is used for being connected with the web plate unit of one of two adjacent segmented blades;
a second connecting piece, one end of the second connecting piece, which is far away from the first connecting piece, is used for connecting with the web plate unit of the other of the two adjacent segmented blades, one ends of the first connecting piece and the second connecting piece, which face each other, are at least partially arranged to protrude out of the shell units along the axial direction, and one ends of the first connecting piece and the second connecting piece, which face each other, are mutually jointed to form a joint part between the two adjacent shell units;
and the outer skin is arranged around the periphery of the joint part and extends for a preset distance along the radial direction of the segmented blade, so that two adjacent shell units are connected through the outer skin.
9. A method of forming a blade, the method comprising:
providing a connecting assembly and at least two web plate units, wherein the connecting assembly comprises a first connecting piece and a second connecting piece, one end of the first connecting piece is bonded to the inner side of one web plate unit to form a first transition piece, and one end of the second connecting piece is bonded to the inner side of the other web plate unit to form a second transition piece;
providing at least two shell elements, bonding said first transition piece to the inside of one of said shell elements to form a first blade segment, and bonding said second transition piece to the inside of another of said shell elements to form a second blade segment;
connecting the ends of the first and second connectors facing each other to form a joint, each of the first and second blade segments connecting to form the blade.
10. The molding method according to claim 9, wherein in providing at least two shell units, one ends of the first connecting pieces and the second connecting pieces facing each other protrude at least from the shell unit bonding arrangement;
after the connecting the ends of the first connecting piece and the second connecting piece facing each other to form a joint, the method further comprises the following steps: providing an outer skin, arranging the outer skin around the periphery of the joint part and extending for a preset thickness along the radial direction of the blade so that two adjacent shell units are connected through the outer skin.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210230398.2A CN114810472A (en) | 2022-03-09 | 2022-03-09 | Blade, connecting assembly and blade forming method |
| PCT/CN2022/138305 WO2023169027A1 (en) | 2022-03-09 | 2022-12-12 | Blade, connecting assembly, and forming method for blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210230398.2A CN114810472A (en) | 2022-03-09 | 2022-03-09 | Blade, connecting assembly and blade forming method |
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| Publication Number | Publication Date |
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| CN114810472A true CN114810472A (en) | 2022-07-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210230398.2A Pending CN114810472A (en) | 2022-03-09 | 2022-03-09 | Blade, connecting assembly and blade forming method |
Country Status (2)
| Country | Link |
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| CN (1) | CN114810472A (en) |
| WO (1) | WO2023169027A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116335873A (en) * | 2022-12-19 | 2023-06-27 | 北京金风科创风电设备有限公司 | Blade and method for connecting blade |
| WO2023169027A1 (en) * | 2022-03-09 | 2023-09-14 | 中材科技风电叶片股份有限公司 | Blade, connecting assembly, and forming method for blade |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7891947B2 (en) * | 2008-12-12 | 2011-02-22 | General Electric Company | Turbine blade and method of fabricating the same |
| 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 |
| CN104612907A (en) * | 2014-12-01 | 2015-05-13 | 华北电力大学 | Wind turbine generator combined type blades and installation method |
| CN105526044A (en) * | 2015-12-24 | 2016-04-27 | 东方电气风电有限公司 | Connection structure of sectionally-assembled blade of wind-driven generator and manufacture method thereof |
| CN112412696B (en) * | 2020-11-20 | 2021-09-10 | 株洲时代新材料科技股份有限公司 | Wind driven generator extension blade and manufacturing method thereof |
| CN114810472A (en) * | 2022-03-09 | 2022-07-29 | 中材科技风电叶片股份有限公司 | Blade, connecting assembly and blade forming method |
-
2022
- 2022-03-09 CN CN202210230398.2A patent/CN114810472A/en active Pending
- 2022-12-12 WO PCT/CN2022/138305 patent/WO2023169027A1/en unknown
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023169027A1 (en) * | 2022-03-09 | 2023-09-14 | 中材科技风电叶片股份有限公司 | Blade, connecting assembly, and forming method for blade |
| CN116335873A (en) * | 2022-12-19 | 2023-06-27 | 北京金风科创风电设备有限公司 | Blade and method for connecting blade |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2023169027A1 (en) | 2023-09-14 |
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