CN116085187A - Blade and wind generating set - Google Patents

Blade and wind generating set Download PDF

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Publication number
CN116085187A
CN116085187A CN202310008072.XA CN202310008072A CN116085187A CN 116085187 A CN116085187 A CN 116085187A CN 202310008072 A CN202310008072 A CN 202310008072A CN 116085187 A CN116085187 A CN 116085187A
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CN
China
Prior art keywords
half shell
web
blade
sub
skin
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN202310008072.XA
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Chinese (zh)
Other versions
CN116085187B (en
Inventor
翟佳琪
鲁晓锋
石磊
胡晓萍
李占营
蒙丹
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sinomatech Wind Power Blade Co Ltd
Original Assignee
Sinomatech Wind Power Blade Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sinomatech Wind Power Blade Co Ltd filed Critical Sinomatech Wind Power Blade Co Ltd
Priority to CN202310008072.XA priority Critical patent/CN116085187B/en
Publication of CN116085187A publication Critical patent/CN116085187A/en
Application granted granted Critical
Publication of CN116085187B publication Critical patent/CN116085187B/en
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Anticipated expiration legal-status Critical

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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
    • F03D1/0608—Rotors characterised by their aerodynamic shape
    • F03D1/0633—Rotors characterised by their aerodynamic shape of the blades
    • 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
    • F03D1/0658—Arrangements for fixing wind-engaging parts to a hub
    • 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
    • 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
    • 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
    • F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/72—Wind turbines with rotation axis in wind direction

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Wind Motors (AREA)

Abstract

The application provides a blade and a wind generating set, wherein the blade comprises a first half shell, a second half shell, a web plate and at least one connecting piece; the first half shell and the second half shell are mutually covered to form a hollow structure body with a containing cavity; the web plate is arranged in the accommodating cavity and is connected with the first half shell and the second half shell; one part of the connecting piece is pre-buried in the first half shell, and the other part extends out of the first half shell to be arranged and used for fastening and connecting the first half shell with the web plate. The blade that this application provided is favorable to simplifying the connection technology of first half shell and web when guaranteeing the joint strength of web and first half shell, and then is favorable to improving the production efficiency of blade.

Description

Blade and wind generating set
Technical Field
The application belongs to the technical field of wind power, and particularly relates to a blade and a wind generating set.
Background
Wind energy is a clean and renewable energy source, and a wind generating set is used as necessary equipment for converting wind energy into electric energy and is widely applied at home and abroad. The blades of the wind generating set are used as main components for converting wind energy into kinetic energy, and the performance stability of the blades in use has a key influence on the overall performance of the wind generating set.
As a main bearing component of a wind generating set, how to improve the production efficiency of the blade besides improving the performance of the blade is a problem to be solved by those skilled in the art.
Disclosure of Invention
The embodiment of the application provides a blade, a manufacturing method thereof and a wind generating set, and can improve the production efficiency of the blade.
In one aspect, the present application provides a blade comprising a first half shell, a second half shell, a web, and at least one connector; the first half shell and the second half shell are mutually covered to form a hollow structure body with a containing cavity; the web plate is arranged in the accommodating cavity and is connected with the first half shell and the second half shell; one part of the connecting piece is pre-buried in the first half shell, and the other part extends out of the first half shell to be arranged and used for fastening and connecting the first half shell with the web plate.
In some embodiments, a part of at least one of the connecting pieces is pre-buried in the second half shell, and another part extends out of the second half shell, and is used for fastening and connecting the two half shells with the web.
In some embodiments, the blade further comprises a connecting member; at least one connecting piece is partially embedded in the web, the other part extends out of the web, the connecting component is connected with the part, extending out of the first half shell, of the connecting piece, and the part, extending out of the web, of the connecting piece is connected with the connecting piece.
In some embodiments, the web includes a web body and a flange portion on at least one side of the web body, the flange portion having a mounting hole, the portion of the connector extending out of the first half shell passing through the mounting hole.
In some embodiments, the material of the connector comprises an insulating material.
In some embodiments, the material of the connector comprises at least one of fiber, resin, rubber, silicone, and ceramic.
In some embodiments, the connector comprises a fastening sub-piece and a support sub-piece, the fastening sub-piece being connected to the support sub-piece, the support sub-piece being located inside the first half-shell, the fastening sub-piece protruding from the first half-shell and being arranged for connection to the web.
In some embodiments, the fastening sub-component comprises a bolt, screw, pin, or rivet.
In some embodiments, the first half shell comprises a skin, a core material, and a beam, the beam and the core material being filled within the skin; the support sub-member is disposed between the skin and the beam; and/or the support sub-member is arranged between the skin and the core material.
In some embodiments, the support sub-member includes a first support plate, a second support plate, and a third support plate connected in pairs, a normal to the first support plate, a normal to the second support plate, and a normal to the third support plate intersecting in pairs; the fastening sub-piece is connected to the first support plate, the first support plate is connected with one side of the skin, which faces away from the accommodating cavity, and the second support plate and the third support plate are connected to the core material and connected with one side of the skin, which is close to the accommodating cavity.
In some embodiments, the skin includes a skin body having a first opening for the passage of the portion of the connector pre-buried in the first half-shell, and a reinforcement portion disposed to cover the first opening and connected to the skin body and the connector.
In some embodiments, the blade further comprises a reinforcing skin and a fastening nut, the fastening nut being connected to the fastening sub-piece, the reinforcing skin covering the fastening nut and the portion of the fastening sub-piece extending out of the first half-shell and connecting the skin.
In some embodiments, the first half shell has a first sub-section and a second sub-section, the second sub-section is located at one end of the blade near the tip of the blade, the connecting piece is disposed on the first sub-section, and the second sub-section is adhesively connected with the web.
On the other hand, the embodiment of the application provides a wind generating set, which comprises the blade provided by any embodiment.
The blade and the wind generating set that provide of this embodiment are pre-buried in first half casing through setting up the part of connecting piece, and another part stretches out first half casing setting to be used for with web fastening connection, when guaranteeing the joint strength of first half casing and web, be favorable to simplifying the connection technology of first half casing and web, and then be favorable to improving the production efficiency of blade.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following description will briefly explain the drawings needed in the embodiments of the present application, and it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of a wind turbine generator system according to an embodiment of the present disclosure;
FIG. 2 is a schematic cross-sectional view of a blade provided in an embodiment of the present application;
FIG. 3 is a schematic view of a structure of a web of a blade according to an embodiment of the present disclosure in a first half shell mounted state;
FIG. 4 is a schematic view of a structure of a web of a blade according to an embodiment of the present disclosure in a first half shell mounted state;
FIG. 5 is an enlarged view of a portion of FIG. 4 at C;
fig. 6 is a schematic structural view of the connection member of fig. 5.
FIG. 7 is a schematic view of a structure of a connector in a blade according to an embodiment of the present application;
FIG. 8 is a schematic view of another construction of a web of a blade according to an embodiment of the present disclosure in an installed state with a first half shell;
FIG. 9 is an enlarged view of a portion of FIG. 8 at A;
FIG. 10 is a schematic view of the structure of the connector of FIG. 9;
FIG. 11 is a schematic view of yet another construction of a web of a blade provided in an embodiment of the present application in an installed state with a first half shell;
FIG. 12 is a partial enlarged view at B in FIG. 11;
fig. 13 is a schematic view of the structure of the connector of fig. 12. In the drawings, the drawings are not necessarily to scale.
Reference numerals in the specific embodiments are as follows:
10. a blade; 10a, a containing cavity; 10b, head-on; 10c, lee side; 11. a first half-shell; 111. a skin; 1111. a skin body; 1112. a reinforcing part; 112. a core material; 113. a beam; 12. a second half-shell; 13. a web; 131. a web body; 132. a flange portion; 14. a connecting piece; 141. a fastening sub-member; 142. a support sub-member; 1421. a first support plate; 1422. a second support plate; 1423. a third support plate; 15. a connecting member; 16. reinforcing the skin; 17. a fastening nut;
100. a wind power generator set.
Detailed Description
Features and exemplary embodiments of various aspects of the present application are described in detail below, and in order to make the objectives, technical solutions, and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and detailed embodiments. It should be understood that the specific embodiments described herein are intended to be illustrative of the application and are not intended to be limiting. It will be apparent 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 showing examples of the present application.
It is noted that relational terms such as first and second, and the like are 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. Moreover, 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 like elements in a process, method, article or apparatus that comprises the element.
It should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "front", "rear", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of description, and do not indicate or imply that the apparatus or element to be referred to must have a specific direction, be configured and operated in a specific direction, and thus should not be construed as limiting the patent.
It should also be noted that unless explicitly stated or limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.
The blade is generally formed by mutually covering two half shells to form a hollow structural body, and the connection of the two half shells is realized through structures such as a web plate and the like so as to improve the overall structural strength of the blade.
In the related art, the web and the half shell are generally connected into a whole by means of bonding, however, after the glue body in bonding connection is cured and formed, brittleness is high, and before bonding, the web and the half shell, such as the skin of the half shell, are required to have certain roughness and cleanliness, so that before bonding, the web and the skin of the half shell and other structures need to be cleaned and subjected to roughness treatment. And in the bonding process, the pressing work is needed to be placed, so that the bonding strength of the web plate and the skin is improved. After the bonding is finished, the defects of excessive thickness of the web adhesive layer, adhesive shortage or adhesive layer foreign matter, poor curing of the adhesive, cracking of the adhesive, web bonding offset and the like are easy to occur. Thus, not only is the manufacturing process of the blade complicated, but also the strength of the manufactured blade is not high.
In view of the foregoing, embodiments of the present application provide a blade and a wind turbine generator set using the same.
As shown in fig. 1, 2 and 3, a blade 10 provided according to an embodiment of the present application comprises a first half shell 11, a second half shell 12, a web 13 and at least one connection 14. The first half shell 11 and the second half shell 12 are mutually covered to form a hollow structure body with a containing cavity 10 a. The web 13 is disposed in the accommodating chamber 10a and connects the first half shell 11 and the second half shell 12. The connecting piece 14 is partially embedded in the first half shell 11, and the other part extends out of the first half shell 11 and is used for fastening and connecting the first half shell 11 and the web 13.
The first half shell 11 may include a beam 113, a skin 111, and a core 112, and a portion of the beam 113, the skin 111, and the connection member 14 are laid together on an associated mold, and a portion of the connection member 14 is disposed inside the skin 111, and is cured by pouring an adhesive such as resin, etc., so that a portion of the connection member 14 is cured together with the first half shell 11 and is embedded inside the first half shell 11, and another portion of the connection member 14 may be exposed outside the first half shell 11 and is used for connection with the web 13.
The number of the connecting pieces 14 may be plural, and the plural connecting pieces 14 may be disposed at uniform intervals along the axial direction of the blade 10, or the plural connecting pieces 14 may be disposed at non-uniform intervals along the axial direction of the blade 10, and may be selected according to actual needs.
Alternatively, the first half shell 11 may be provided on the side of the blade 10 close to the windward side 10b, and the second half shell 12 on the side of the blade 10 close to the leeward side 10 c. Alternatively, the first half shell 11 is arranged on the side of the blade 10 close to the lee side 10c, while the second half shell 12 is arranged on the side of the blade 10 close to the windward side 10 b. Can be selected according to actual needs.
The second half shell 12 and the web 13 may be connected by a connecting member 14 or may be connected by bonding or the like. Illustratively, in the same manner as the first half shell 11, a portion of the connecting member 14 is embedded in the second half shell 12 during the injection molding of the second half shell 12, and is connected to the web 13 through another portion of the connecting member 14.
In the installation process, the web 13 and one side of the first half shell 11 close to the accommodating cavity 10a are connected through the connecting piece 14, then the second half shell 12 and the first half shell 11 are mutually covered to form a hollow structure body with the accommodating cavity 10a, the web 13 is positioned in the accommodating cavity 10a, and the second half shell 12 is connected with the web 13.
The part of the connecting piece 14 extending out of the first half shell 11 is used for fastening and connecting the first half shell 11 with the web 13, and then the part of the connecting piece 14 extending out of the first half shell 11 and the web 14 can be directly connected or connected through an intermediate connecting component, and can be selected according to actual needs.
Optionally, the connecting piece 14 is pre-buried in the beam 113 and the side of the skin 111 of the first half shell 11 close to the accommodating cavity 10a, or in the core 112 of the first half shell 11.
The connecting member 14 may include fasteners such as bolts, screws, pins or rivets and is connected to the web 13 by the fasteners, and the connecting member 14 may include other structures to provide some support to the fasteners.
In order to achieve the connection of the web 13 to the connection piece 14, a hole structure for connection to the connection piece 14 may be reserved at an appropriate position during the processing of the web 13, or the hole structure for connection to the connection piece 14 may be formed after the web 13 is molded. The selection can be specifically performed according to actual requirements, and is not limited herein.
Illustratively, the web 13 is also formed by pouring the base material, and prior to the pouring, a hole structure is provided at the corresponding position of the base material of the web 13, and when the web 13 is connected with the first half shell 11, the connecting piece 14 is directly inserted into the hole structure on the web 13, so as to realize the fastening connection of the web 13 and the connecting piece 14.
Alternatively, the first half shell 11 may be provided to be connected to the web 13 only by the connecting member 14, or a part of the first half shell 11 may be provided to be connected to the web 13 by the connecting member 14, and another part may be provided to be connected to the web 13 by bonding or the like.
According to the blade 10 provided by the embodiment of the application, one part of the connecting piece 14 is embedded in the first half shell 11, and the other part of the connecting piece extends out of the first half shell 11 and is used for being fixedly connected with the web 13, so that the connection process of the first half shell 11 and the web 13 is simplified on the premise of ensuring the structural strength of the blade 10, and the production efficiency of the blade 10 is improved.
In some embodiments, a portion of the at least one connecting member 14 is embedded in the second half shell 12, and another portion extends out of the second half shell 12 and is used to securely connect the second half shell 12 with the web 13.
Specifically, during installation, the web 13 may be fastened to one of the first half shell 11 and the second half shell 12 by the connecting member 14, and then the first half shell 11 and the second half shell 12 are covered, and the web 13 is fastened to the other of the first half shell 11 and the second half shell 12 by the connecting member 14 in the accommodating chamber 10 a.
A portion of the connecting member 14 is pre-embedded in the second half shell 12, and then the connecting member 14 may be pre-embedded in the skin 111 of the second half shell 12 before the second half shell 12 is injection molded, and during the injection molding process, the connecting member 14 and the second half shell 12 are cured together.
It will be appreciated that providing at least one connecting element 14, a portion of which is pre-embedded in the second half-shell 12 and another portion of which extends beyond the second half-shell 12 and is used to securely connect the second half-shell 12 to the web 13, is advantageous for further simplifying the processing of the blade 10 and improving the structural strength of the blade 10.
As shown in fig. 4 to 6, in some embodiments, the blade 10 further includes a connection member 15, a portion of at least one connection member 14 is embedded in the web 13, another portion extends out of the web 13, the connection member 15 connects a portion of the connection member 14 extending out of the first half shell 11, and connects a portion of the connection member 14 extending out of the web 13.
Thus, during the manufacturing process of the web 13, a part of the connecting piece 14 is embedded in the web 13, and the other part extends out of the web 13, so that the connecting piece 14 extending out of the web 13 and the connecting piece 14 extending out of the first half shell 11 are connected by the connecting member 15.
The connecting member 15 may be any structural member capable of achieving connection of the web 14 and the first half shell 11, and as shown in fig. 6, the connecting member 15 is illustratively an "L" shaped plate and has a hole structure for penetrating the connecting member 14, one side of which is connected to the connecting member 14 extending from the first half shell 11, and the other side of which is connected to the connecting member 14 extending from the web 13.
Through setting up connecting elements 15 to set up the partial pre-buried in web 13 of at least one connecting piece 14, realize the connection of web 13 and first half shell 11 through connecting elements 15, can omit the technology of punching on web 13, be favorable to keeping web 13 structural integrity, and then improve web 13 and blade 10's overall structure intensity.
As shown in fig. 2 and 3, in some embodiments, the web 13 includes a web body 131 and a flange portion 132 on at least one side of the web body 131, the flange portion 132 having a mounting hole through which a portion of the connector 14 extending out of the first half shell 11 is disposed.
The flange portion 132 may be located on the side of the web 13 near the leading edge of the blade 10 or on the side of the web 13 near the trailing edge of the blade 10, although in embodiments where the blade 10 comprises only one web 13, it is also possible to provide the web 13 with flange portions 132 on both sides near the leading and trailing edges of the blade 10, respectively.
The flange portion 132 may be integrally formed with the web 13 and form mounting holes in the formed flange.
The mounting holes are adapted to cooperate with the connecting members 14 to provide a positioning action for the mounting of the web 13 and the first half-shell 11 during the connection of the first half-shell 11 to the web 13.
Therefore, the flange portion 132 is provided on the web 13, and the flange portion 132 is provided with the mounting hole, so that the fastening sub-member 141 is inserted into the mounting hole, the contact area between the web 13 and the first half shell 11 can be increased by using the flange portion 132, the stress concentration of the web 13 on the first half shell 11 can be reduced, and the web 13 is connected with the connecting member 14 through the flange portion 132, so that the connection strength between the web 13 and the first half shell 11 can be increased, and the structural strength of the blade 10 can be further improved. And by utilizing the matching of the mounting holes and the fastening sub-pieces 141, a positioning effect is provided for the mounting of the web 13 and the first half shell 11, which is beneficial to simplifying the production process of the blade 10 and improving the mounting precision in the mounting process of the web 13 and the first half shell 11.
In some embodiments, the material of the connector 14 comprises an insulating material. Illustratively, the connectors 14 are each made of an insulating material.
In the working process of the blade 10, extreme weather such as lightning is inevitably met, the material for arranging the connecting piece 14 comprises an insulating material, the risk of lightning striking of the connecting piece 14 in working is reduced, and then the risk of lightning striking of the blade 10 is reduced.
In some embodiments, the material of the connector 14 includes at least one of a fiber reinforced composite, rubber, silicone, and ceramic.
The material of the connector 14 may include one or more of a fiber reinforced composite, rubber, silicone, and ceramic. The fiber reinforced composite material can be a resin-based fiber reinforced composite material, which can be formed by pouring resin on the fibers for curing, has better strength and lighter weight, and is beneficial to realizing the light weight of the connecting piece 14 and the blade 10.
The material of the connecting piece 14 comprises at least one of fiber reinforced composite material, rubber, silica gel and ceramic, which is beneficial to reducing the manufacturing cost of the blade 10 under the premise of ensuring the insulating property of the connecting piece 14.
As shown in fig. 4, in some embodiments, the connector 14 includes a fastening sub-member 141 and a support sub-member 142, the fastening sub-member 141 being connected to the support sub-member 142, the support sub-member 142 being located within the first half-shell 11, the fastening sub-member 141 being disposed protruding from the first half-shell 11 and being connected to the web 13.
The supporting sub-component 142 may be a plate-shaped structure, and the shape of the supporting sub-component may be set along with the outer surface of the blade 10, and since the supporting sub-component 142 is located in the first half shell 11, the supporting sub-component 142 is pre-embedded in the first half shell 11, and is cured and formed together with the first half shell 11 in the skin 111 of the first half shell 11, so that the connection strength between the connecting piece 14 and the first half shell 11 is improved, and the bearing capacity of the connecting piece 14 is improved.
The fastening sub-member 141 may be a bolt, a screw, a pin, a rivet, or the like, and the fastening sub-member 141 is connected to the supporting sub-member 142 and fastened to the web 13.
Therefore, the provision of the connecting member 14 including the fastening sub-member 141 and the supporting sub-member 142 is advantageous in improving the connection strength of the connecting member 14 with the first half shell 11, thereby improving the structural strength of the entire blade 10.
In some embodiments, the fastening sub 141 comprises a bolt, screw, pin, or rivet.
In embodiments where the web 13 has mounting holes, the mounting holes may be smooth holes, the fastening sub-members 141 may be threaded into the mounting holes, and the fastening sub-members 141 may be fastened to the web 13 by screwing, pinning, riveting, or the like.
Therefore, the provision of the fastening sub-members 141 including bolts, screws, pins or rivets facilitates the fastening connection of the connecting member 14 with the web 13, further simplifies the production process of the blade 10, and improves the connection strength of the web 13 with the first half shell 11.
As shown in fig. 2, in some embodiments, the blade 10 has a windward side 10b and a leeward side 10c disposed opposite each other, and the first half shell 11 is located on a side of the blade 10 adjacent to the windward side 10 b.
Since the web 13 is generally connected to the blade 10 on the side close to the windward side 10b, and then the half shell on the leeward side 10c of the blade 10 is covered with the half shell on the leeward side 10c, the first half shell 11 is disposed on the side close to the leeward side 10c of the blade 10, and the web 13 may be connected to the first half shell 11 first, and then the second half shell 12 is covered with the first half shell 11 and connected to the web 13.
In addition, during the operation of the blade 10 under the action of wind, a side of the windward side 10b bears a larger load, and the first half shell 11 is disposed on a side of the blade 10 close to the windward side 10b, so that the connection strength between the first half shell 11 and the web 13 is higher, which is beneficial to improving the bearing capacity of the blade 10.
Therefore, the first half shell 11 is arranged on the side of the blade 10 close to the windward side 10b, which is beneficial to simplifying the production process of the blade 10 and improving the bearing capacity of the blade 10.
As shown in fig. 8-13, in some embodiments, first half shell 11 includes a skin 111, a core 112, and a beam 113, with beam 113 and core 112 filling within skin 111, support sub-members 142 disposed between skin 111 and beam 113, and/or support sub-members 142 disposed between skin 111 and core 112.
Specifically, the beam 113 may be a structure formed by injection molding a plate, and the core 112 is a structure filled between the core 112 and the skin 111 or between the skin 111 and the skin 111 formed by curing a binder such as a resin or the like injected into the plate after injection molding.
Depending on the construction of the web 13 and its mounting position to the first half shell 11, the support sub-elements 142 of the connection 14 may be arranged between the beams 113 and the skin 111, or the support sub-elements 142 may be arranged between the skin 111 and the core 112, of course, both the support sub-elements 142 and the support sub-elements 142 between the beams 113 and the skin 111 and between the beams 113 and the core 112. So arranged, the connection position of the first half shell 11 and the web 13 can be set appropriately as required.
As shown in fig. 8 to 10, in some embodiments, the support sub-members 142 include a first support plate 1421, a second support plate 1422, and a third support plate 1423 connected in pairs, and a normal direction of the first support plate 1421, a normal direction of the second support plate 1422, and a normal direction of the third support plate 1423 intersect in pairs. The fastening sub-component 141 is connected to the first support plate 1421, the first support plate 1421 is connected to a side of the skin 111 facing away from the accommodating cavity 10a, and the second support plate 1422 and the third support plate 1423 are connected to the core 112 and connected to a side of the skin 111 adjacent to the accommodating cavity 10 a.
The normal direction of the first support plate 1421, the normal direction of the second support plate 1422, and the normal direction of the third support plate 1423 may intersect in pairs, and may be disposed at an acute angle, or at right angles in pairs. The first support plate 1421, the second support plate 1422, and the third support plate 1423 may have a flat plate shape, or the first support plate 1421, the second support plate 1422, and the third support plate 1423 may have corresponding shapes according to the specific shape of the skin 111 or the core 112.
The first support plate 1421, the second support plate 1422 and the third support plate 1423 have higher bearing capacity along the normal direction of the first support plate 1421, the normal direction of the second support plate 1422 and the normal direction of the third support plate 1423 are arranged to be intersected in pairs, so that the support sub-members 142 have certain bearing capacity along the directions of intersection of three pairs, and the bearing capacity of the support sub-members 142 is improved, and the connection strength of the first half shell 11 and the second half shell 12 is improved.
The first support plate 1421, the second support plate 1422, and the third support plate 1423 may be integrally formed, or formed by the three components, and integrally connected by clamping, screwing, or riveting.
Illustratively, the first support plate 1421, the second support plate 1422, and the third support plate 1423 are integrally formed together by a concrete casting process.
The first support plate 1421 is connected with the skin 111, the second support plate 1422 and the third support plate 1423 are respectively connected with the core 112, which is favorable for further improving the connection area of the support sub-piece 142 and the first half shell 11, further improving the connection strength of the connecting piece 14 and the first half shell 11, and thus, is favorable for further improving the connection strength of the first half shell 11 and the web 13, and the integral structural strength of the blade 10
As shown in fig. 11 to 13, in some embodiments, the skin 111 includes a skin body 1111 and a reinforcing portion 1112, the skin body 1111 has a first opening for passing a portion of the connecting member 14 pre-buried in the first half shell 11, and the reinforcing portion 1112 is disposed to cover the first opening and is connected to the skin body 1111 and the connecting member 14.
In the process of disposing the connecting member 14, a first opening needs to be formed in the skin 1111 for the connecting member 14 to pass through, and after the connecting member 14 is injection molded together with the skin 111, the reinforcing portion 1112 is disposed to supplement the first opening, so as to maintain the structural integrity of the skin 111.
The reinforcing portion 1112 may be formed by casting a resin on the fibers, covering the first openings with a cloth or the like, casting a resin on the fiber portions, and curing.
Therefore, providing the skin 111 includes providing the skin body 1111 and the reinforcing portion 1112, and providing the connecting member 14 improves the connection strength of the first half shell 11 and the web 13, while also being beneficial to maintaining the structural integrity of the skin 11, and improving the structural strength of the first half shell 11.
In some embodiments, the blade 10 further comprises a reinforcing skin 16 and a fastening nut 17, the fastening nut 17 being connected to the fastening sub-element 141, the reinforcing skin 16 covering the fastening nut 17 and the part of the fastening sub-element 141 protruding out of the first half shell 11.
The portion of the connecting piece 14 extending out of the first half shell 11 is connected with the web 13 or the connecting member 15 and fastened by the fastening nut 17, and after the fastening connection is completed, the portion of the connecting piece 14 extending out of the first half shell 11 and the fastening nut 17 are covered by the reinforcing skin 16 and connected to the skin 111.
The reinforcement skin 16 may comprise fibers and a resin, illustratively, a fiber cloth covering the connectors 14 and the fastening nuts 17, and then casting the resin, which is cured over the fiber cloth to form the reinforcement skin 16.
Therefore, the provision of the reinforcing skin 16 is advantageous in further improving the strength of the connection of the first half shell 11 and the web 13, and thus the structural strength of the blade 10.
In some embodiments, the first half shell 11 has a first sub-section at the end of the blade 10 near the tip of the blade, and a connecting member 14 is provided on the first sub-section, and a second sub-section adhesively connected to the web 13.
The fastening connection between the web 13 and the connecting member 14 embedded in the first half shell 11 may be achieved before the first half shell 11 and the second half shell 12 are mutually covered, or may be achieved after the first half shell 11 and the second half shell 12 are mutually covered.
In the case where the fastening of the connecting piece 14 to the web 13 is effected after the first half-shell 11 and the second half-shell 12 have been closed, an operator is required to enter the receiving space in order to effect the fastening of the connecting piece 14 to the web 13. The closer the receiving chamber 10a is to the tip end of the blade 10, the smaller the space in the interior thereof until there is insufficient space to accommodate an operator, at which time the first half shell 11 and the web 13 cannot be connected by the connecting member 14.
Therefore, the first half shell 11 is provided with a first sub-section and a second sub-section, the second sub-section is positioned at one end of the blade 10 close to the blade tip, and is provided with the connecting piece 14 to be connected with the first sub-section, the second sub-section is connected with the web 13 in an adhesive mode, the lengths of the first sub-section and the second sub-section can be reasonably set, the first half shell 11 and the web 13 can be connected through the connecting piece 14 as much as possible, and the web 13 and the second half shell 12 can be connected in an adhesive mode at the second sub-section which cannot be connected through the connecting piece 14. In this way, it is advantageous to achieve an improvement in the strength of the connection between the first half shell 11 and the web 13, while at the same time improving the strength of the connection between them as much as possible.
The wind generating set 100 provided according to an embodiment of the present application includes the blade 10 provided in any of the embodiments described above.
The wind generating set 100 provided in the embodiment of the present application has the same technical effects due to the adoption of the blade 10 provided in any one of the embodiments, and will not be described herein again.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the embodiments, and are intended to be included within the scope of the claims and description. In particular, the technical features mentioned in the respective embodiments may be combined in any manner as long as there is no structural conflict. The present application is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.

Claims (14)

1. A blade, comprising:
the first half shell and the second half shell are mutually covered to form a hollow structure body with a containing cavity;
the web plate is arranged in the accommodating cavity and is connected with the first half shell and the second half shell;
at least one connecting piece, a part of which is pre-buried in the first half shell, and another part of which extends out of the first half shell and is used for fastening and connecting the first half shell and the web plate.
2. A blade according to claim 1, wherein at least one of the connection elements is partially embedded in the second half-shell and the other part extends beyond the second half-shell and is arranged for fastening the two half-shells to the web.
3. The blade of claim 1, further comprising a connecting member;
at least one connecting piece is partially embedded in the web, the other part extends out of the web, the connecting component is connected with the part, extending out of the first half shell, of the connecting piece, and the part, extending out of the web, of the connecting piece is connected.
4. The blade of claim 1, wherein the web comprises a web body and a flange portion on at least one side of the web body, the flange portion having a mounting hole, the portion of the connector extending out of the first half shell passing through the mounting hole.
5. The blade of claim 1, wherein the material of the connector comprises an insulating material.
6. The blade of claim 1, wherein the material of the connector comprises at least one of a fiber reinforced composite, rubber, silicone, and ceramic.
7. A blade according to claim 1, wherein the connection piece comprises a fastening sub-piece and a supporting sub-piece, the fastening sub-piece being connected to the supporting sub-piece, the supporting sub-piece being located inside the first half-shell, the fastening sub-piece protruding from the first half-shell and being arranged for connection with the web.
8. The blade of claim 7, wherein the fastening sub comprises a bolt, screw, pin, or rivet.
9. The blade of claim 7, wherein the first half shell comprises a skin, a core material, and a beam, the beam and the core material being filled within the skin;
the support sub-member is disposed between the skin and the beam; and/or the number of the groups of groups,
the support sub-member is disposed between the skin and the core material.
10. The blade of claim 9, wherein the support sub-members comprise a first support plate, a second support plate, and a third support plate connected in pairs, the normal to the first support plate, the normal to the second support plate, and the normal to the third support plate intersecting in pairs; the fastening sub-piece is connected to the first support plate, the first support plate is connected with one side of the skin, which faces away from the accommodating cavity, and the second support plate and the third support plate are connected to the core material and connected with one side of the skin, which is close to the accommodating cavity.
11. The blade of claim 9, wherein the skin includes a skin body having a first opening for the passage of the portion of the connector embedded in the first half shell, and a reinforcement portion disposed over the first opening and connected to the skin body and the connector.
12. The blade of claim 9 further comprising a reinforcing skin and a fastening nut, the fastening nut being connected to the fastening sub-piece, the reinforcing skin covering the fastening nut and the portion of the fastening sub-piece extending out of the first half shell and connecting the skin.
13. The blade according to any of the claims 1 to 12, wherein the first half shell has a first sub-section and a second sub-section, the second sub-section being located at the blade tip end, the connecting piece being arranged at the first sub-section, the second sub-section being adhesively connected to the web.
14. A wind power plant comprising a blade according to any of claims 1 to 13.
CN202310008072.XA 2023-01-04 2023-01-04 Blade and wind generating set Active CN116085187B (en)

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