CN116104687B - Blade and wind generating set - Google Patents

Blade and wind generating set Download PDF

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Publication number
CN116104687B
CN116104687B CN202310008073.4A CN202310008073A CN116104687B CN 116104687 B CN116104687 B CN 116104687B CN 202310008073 A CN202310008073 A CN 202310008073A CN 116104687 B CN116104687 B CN 116104687B
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CN
China
Prior art keywords
sub
section
blade
piece
skin
Prior art date
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Active
Application number
CN202310008073.4A
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Chinese (zh)
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CN116104687A (en
Inventor
鲁晓锋
翟佳琪
杨玉荣
李占营
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.)
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Publication date
Application filed by Sinomatech Wind Power Blade Co Ltd filed Critical Sinomatech Wind Power Blade Co Ltd
Priority to CN202310008073.4A priority Critical patent/CN116104687B/en
Publication of CN116104687A publication Critical patent/CN116104687A/en
Application granted granted Critical
Publication of CN116104687B publication Critical patent/CN116104687B/en
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Classifications

    • 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 subsection and a second subsection; the connecting pieces, wherein a part of the connecting pieces are pre-embedded in the first subsection, and a part of the other part of the connecting pieces are pre-embedded in the second subsection; and a connecting member fixedly connected with the plurality of connecting pieces to connect the first sub-section and the second sub-section. According to the blade provided by the application, as the connecting piece and the first sub-section and the second sub-section have higher connecting strength, after the connecting piece pre-embedded in the first sub-section and the connecting piece pre-embedded in the second sub-section are respectively connected with the connecting component, the first sub-section and the second sub-section have higher connecting strength, so that the integral structural strength and the rigidity of the blade are ensured.

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 ensure structural strength and rigidity of the blade besides improving 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 and a wind generating set, which can ensure the structural strength and rigidity of the blade.
In one aspect, the present application provides a blade comprising a first sub-section and a second sub-section; the connecting pieces, wherein a part of the connecting pieces are pre-embedded in the first subsection, and a part of the other part of the connecting pieces are pre-embedded in the second subsection; and a connecting member fixedly connected with the plurality of connecting pieces to connect the first sub-section and the second sub-section.
In some embodiments, the material of the connector comprises an insulating material; and/or the material of the connection member comprises an insulating material.
In some embodiments, the material of the connector comprises at least one of a fiber reinforced composite, rubber, silicone, and ceramic; and/or the material of the connection member includes at least one of a fiber reinforced composite material, rubber, silica gel, and ceramic.
In some embodiments, the first sub-section comprises a first sub-housing and a first sub-web, the first sub-housing being a hollow structure having a first receiving cavity, the first sub-web being located within the first receiving cavity and connecting the first sub-housing; and one part of the connecting piece is pre-buried in the first sub-shell and/or one part of the connecting piece is pre-buried in the first sub-web.
In some embodiments, the connecting member is cylindrical, and a portion of the connecting member is accommodated in the first accommodating cavity and is attached to the first sub-web and the inner wall of the first sub-housing.
In some embodiments, the second sub-section includes a second sub-housing having a hollow structure with a second receiving cavity and a second sub-web positioned within the second receiving cavity and connected to the second sub-housing; the connecting component comprises a first sub-component and a second sub-component, one part of the first sub-component is positioned in the first accommodating cavity and connected with the first sub-shell, and the other part of the first sub-component is positioned in the second accommodating cavity and connected with the second sub-shell; one part of the second sub-piece is positioned in the first accommodating cavity and connected with the first sub-web, and the other part of the second sub-piece is positioned in the second accommodating cavity and connected with the second sub-web.
In some embodiments, the first sub-piece is attached to an inner wall of the first sub-housing and to an inner wall of the second sub-housing; and/or the second sub-piece is attached to the first sub-web and attached to the second sub-web.
In some embodiments, the plurality of connectors are spaced apart along the circumference of the first sub-housing.
In some embodiments, the connector comprises a fastening sub-piece and a supporting sub-piece, the fastening sub-piece is connected with the supporting sub-piece, the supporting sub-piece is pre-embedded in the first sub-section or the second sub-section, and the fastening sub-piece is connected with the connecting member.
In some embodiments, the fastening sub-assembly includes a bolt, screw, pin, or rivet, and the connecting member has a mounting hole that mates with the fastening sub-assembly.
In some embodiments, the axial direction of the securing sub intersects a first direction, the first direction being a direction from the root of the blade toward the tip of the blade.
In some embodiments, the first sub-section comprises a first sub-housing and a first sub-web, the first sub-housing being a hollow structure having a first receiving cavity, the first sub-web being located within the first receiving cavity and connecting the first sub-housing; the first sub-shell comprises a first sub-skin, a first sub-core material and a first sub-beam, and the first sub-beam and the first sub-core material are filled in the first sub-skin; the support sub-piece is arranged in the first sub-core material.
In some embodiments, the support sub-assembly includes a first support plate, a second support plate, and a third support plate, the normal to the first support plate, the normal to the second support plate, and the normal to the third support plate intersecting one another; the fastening sub-piece is connected to the first supporting plate, the first supporting plate is connected with one side of the first sub-skin, which is opposite to the first accommodating cavity, and the second supporting plate and the third supporting plate are connected to the first sub-core material and connected with one side of the first sub-skin, which is close to the first accommodating cavity.
In some embodiments, the first sub-skin includes a skin body having a first opening for a portion of the connector embedded in the first sub-section to pass through, and a stiffening portion disposed over the first opening and connected to the skin body and the connector.
In some embodiments, the first sub-section further comprises a reinforcing skin and a fastening nut, the fastening nut being connected to the fastening sub-member, the reinforcing skin covering the fastening nut and a portion of the fastening sub-member extending out of the first sub-housing and connecting the first sub-skin.
On the other hand, the embodiment of the application provides a wind generating set, which comprises the blade provided by any embodiment.
According to the blade and the wind generating set, the plurality of connecting pieces and the connecting members are arranged, and the plurality of connecting pieces are respectively embedded in the first sub-section and the second sub-section, so that the first sub-section and the second sub-section of the blade are connected through the connection of the connecting pieces and the connecting members. Because the connecting piece all has higher joint strength with first subsection and second subsection, pre-buried in the connecting piece of first subsection and pre-buried in the connecting piece of second subsection be connected with the connecting piece after respectively for first subsection and second subsection have higher joint strength, and then are favorable to guaranteeing the overall structure intensity and the rigidity of blade.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments of the present application will be briefly described below, 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 application;
FIG. 2 is a schematic view of the structure of a first subsection and a second subsection of a blade according to an embodiment of the present application;
FIG. 3 is a schematic view of a first subsection and a second subsection of a blade according to an embodiment of the present application;
FIG. 4 is a schematic view of a first subsection and a second subsection of a blade from another perspective according to an embodiment of the present application;
FIG. 5 is a schematic view of a partial cross-sectional structure of a blade provided by an embodiment of the present application;
FIG. 6 is a schematic view of another partial cross-sectional configuration of a blade provided by an embodiment of the present application;
fig. 7 is a schematic structural view of a connector in a blade according to an embodiment of the present application.
FIG. 8 is a schematic view of another connection member in a blade according to an embodiment of the present application;
FIG. 9 is a schematic view of a further connector in a blade according to an embodiment of the present application;
FIG. 10 is a schematic view of still another attachment member for a blade according to an embodiment of the present application;
fig. 11 is a schematic structural view of a connection member in a blade according to an embodiment of the present application.
In the drawings, the drawings are not necessarily to scale.
Reference numerals in the specific embodiments are as follows:
10. a blade; 11. a first sub-segment; 111. a first sub-housing; 111a, a first accommodation chamber; 112. a first sub-web; 12. a second subsection; 121. a second sub-housing; 121a, a second accommodation chamber; 122. a second sub-web; 13. a connecting piece; 131. a fastening sub-member; 132. a support sub-member; 1321. a first support plate; 1322. a second support plate; 1323. a third support plate; 14. a connecting member; 14a, mounting holes; 15. reinforcing the skin; 16. a fastening nut;
100. a wind power generator set.
Detailed Description
Features and exemplary embodiments of various aspects of the present application will be described in detail below, and in order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be described in further detail below with reference to the accompanying drawings and the detailed embodiments. It should be understood that the particular embodiments described herein are meant to be illustrative of the application only and not 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 application by showing examples of the 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 above terms in the present application will be understood in specific cases by those of ordinary skill in the art.
With the development of wind turbine generator technology, longer and longer blades are being designed and manufactured. However, as the length of the blade increases, the transportation of the blade becomes more and more difficult. To this end, the related art proposes a concept of a segmented blade. The blade is manufactured into a plurality of subsections, the subsections are transported separately, and the subsections are assembled after the transportation is completed, so that the transportation work of the blade is greatly facilitated.
However, in the related art, the plurality of sub-segments are manufactured separately, and the plurality of sub-segments are assembled into the complete blade, and as the working time of the subsequent blade increases, the blade gradually shows a bad phenomenon of insufficient strength, especially the connection part of the plurality of sub-segments, and even has a problem of breakage due to the fact that the blade needs to bear larger torque, vibration load and the like in the working process. Therefore, the segmented blade assembly presents a problem of insufficient strength.
In view of this, as shown in fig. 1 to 4 and 11, the present embodiment provides a blade 10 including a first sub-segment 11, a second sub-segment 12, a plurality of connectors 13 and a connecting member 14. Part of the connecting pieces 13 of the plurality of connecting pieces 13 are embedded in the first subsection 11, and part of the other connecting pieces 13 are embedded in the second subsection 12. The connecting member 14 is fixedly connected with the plurality of connectors 13 to connect the first and second sub-sections 11 and 12.
Alternatively, the first subsection 11 may be the end near the blade root of the blade 10 and the second subsection 12 may be the end near the blade tip, or the first subsection 11 may be the end near the blade tip and the second subsection 12 may be the end near the blade root. Or the first subsection 11 and the second subsection 12 are portions of the blade 10 between the root and the tip, respectively. Thus, the blade 10 may comprise only the first sub-section 11 and the second sub-section 12, but may also comprise further sub-sections to be assembled together with the first sub-section 11 and the second sub-section 12 into a complete blade 10.
The first sub-section 11 and the second sub-section 12 can be transported separately after at least the first sub-section 11 and the second sub-section 12 are completed, and the first sub-section 11 and the second sub-section 12 are transported more conveniently because the first sub-section 11 and the second sub-section 12 are lower than the whole length of the blade 10, and the first sub-section 11 and the second sub-section 12 are assembled into a whole through the connecting member 14 after the first sub-section 11 and the second sub-section 12 are transported in place respectively, or the connecting member 14 is assembled with one of the first sub-section 11 and the second sub-section 12 and transported together. In this way, the convenience of transportation of the blade 10 is advantageously improved.
The plurality of connecting elements 13 may be identical in terms of their structural design or, depending on their positional relationship with the first subsection 11 and the second subsection 12, the plurality of connecting elements 13 may be provided with a plurality of different structural designs for facilitating the connection with the first subsection 11 or the second subsection 12.
The blade 10 may be a hollow structure body with a containing cavity, a part of the connecting piece 13 is pre-embedded in the first subsection 11 or the second subsection 12, and the other part extends to the outside of the blade 10 facing away from the containing cavity, or extends to the side of the blade 10 facing towards the containing cavity. Of course, it is also possible to provide the connecting piece 13 pre-buried in the first sub-section 11 to be disposed toward the second sub-section 12, while the connecting piece 13 pre-buried in the second sub-section 12 is disposed toward the first sub-section 11, and the connecting member 14 is located between the first sub-section 11 and the second sub-section 12.
In an embodiment in which the other part of the connecting piece 13 protrudes outside the blade 10 facing away from the receiving cavity, the connecting member 14 may be sleeved outside the first and second sub-sections 11, 12 and serve to connect the first and second sub-sections 11, 12. In the embodiment in which the other part of the connecting piece 13 extends to the side of the blade 10 facing the accommodating cavity of the blade 10, the connecting member 14 may be located in the accommodating cavity of the blade 10 and connected with the connecting piece 13 embedded in the first sub-section 11 and the second sub-section 12 respectively in the accommodating cavity to realize the connection of the first sub-section 11 and the second sub-section 12.
The connecting member 14 may extend in a direction in which the first sub-section 11 points toward the second sub-section 12, and one portion is connected to the first sub-section 11 and the other portion is connected to the second sub-section 12. Alternatively, the connecting member 14 may be in a strip shape, and a plurality of connecting members 14 in a strip shape are respectively disposed at intervals along the circumference of the first sub-section 11 toward one end of the second sub-section 12; alternatively, the connecting member 13 is cylindrical and is disposed in the accommodating cavity of the blade 10, or is sleeved on the outer surface of the blade 10.
The first subsection 11 may be pre-embedded with a plurality of connectors 13, the connectors 13 may be arranged at even intervals, or the connectors 13 may be arranged at positions where reinforcement is required. Similarly, the second subsection 12 may be pre-embedded with a plurality of connectors 13, and the connectors 13 may be arranged at even intervals, or a plurality of connectors 13 may be arranged at appropriate positions. The selection can be specifically performed according to actual requirements, and is not limited herein.
The connecting piece 13 is tightly connected with the connecting member 14, and then the connecting piece 13 and the connecting member 14 can be connected into a whole by a pin connection, riveting, threaded connection or welding. Accordingly, the connection 13 may include a structure of a bolt, a pin, or a rivet, etc., and the connection member 14 is provided with a mounting hole 14a for being engaged with the bolt, the pin, or the rivet of the connection 13.
The connecting member 13 may include only a fastener such as a pin, a bolt, or a rivet, or the connecting member 13 may have other structures to increase the connection strength of the connecting member 13 with the first or second sub-section 11 or 12.
The connecting piece 13 is pre-buried in the first sub-section 11 or the second sub-section 12, and then the connecting piece 13 can be pre-buried in the first sub-section 11 and the second sub-section 12 respectively before the first sub-section 11 or the second sub-section 12 is formed by pouring, and in the process of pouring the first sub-section 11 and the second sub-section 12 into a whole, the connecting piece 13 is connected with the first sub-section 11 or the second sub-section 12 into a whole, so that the connecting piece 13 and the first sub-section 11 or the second sub-section 12 have higher connection strength.
According to the blade 10 provided by the embodiment of the application, the plurality of connecting pieces 13 and the connecting members 14 are arranged, and the plurality of connecting pieces 13 are respectively embedded in the first sub-section 11 and the second sub-section 12, so that the first sub-section 11 and the second sub-section 12 of the blade 10 are connected through the connection of the connecting pieces 13 and the connecting members 14. Because the connecting piece 13 has higher connecting strength with the first sub-section 11 and the second sub-section 12, after the connecting piece 13 pre-embedded in the first sub-section 11 and the connecting piece 13 pre-embedded in the second sub-section 12 are respectively connected with the connecting member 14, the first sub-section 11 and the second sub-section 12 have higher connecting strength, and the integral structural strength and the rigidity of the blade 10 are further guaranteed.
In some embodiments, the material of the connector 13 comprises an insulating material. Illustratively, the connector 13 is made of an insulating material.
Extreme weather such as lightning usually occurs in the working environment of the blade 10, and the material for arranging the connecting piece 13 comprises an insulating material, so that the risk of lightning striking the connecting piece 13 during working is reduced, and the risk of lightning striking the blade 10 is further reduced.
In some embodiments, the material of the connecting member 14 includes an insulating material. Illustratively, the connecting member 14 is made of an insulating material. In this way, the risk of lightning striking the blade 10 during operation may be further reduced.
Optionally, both the connection piece 13 and the connection member 14 are made of an insulating material, thus further reducing the risk of lightning striking the blade 10 during operation, which is advantageous for improving the operational lifetime of the blade 10.
In some embodiments, the material of the connector 13 comprises at least one of a fiber reinforced composite, rubber, silicone, and ceramic.
The material of the connector 13 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 13 and the blade 10.
The material of the connecting piece 13 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 on the premise of ensuring the insulating property of the connecting piece 13.
In some embodiments, the material of the connecting member 14 includes at least one of a fiber reinforced composite, rubber, silicone, and ceramic.
The material of the connection member 14 includes at least one of a fiber reinforced composite material, rubber, silica gel, and ceramic, which is advantageous in reducing the manufacturing cost of the blade 10 while ensuring the insulation performance of the connection member 14.
As shown in fig. 3 and 4, in some embodiments, the first sub-section 11 includes a first sub-housing 111 and a first sub-web 112, the first sub-housing 111 is a hollow structure having a first receiving cavity 111a, and the first sub-web 112 is located within the first receiving cavity 111a and connects the first sub-housing 111. A portion of the connecting member 13 is embedded in the first sub-housing 111 and/or a portion of the connecting member 13 is embedded in the first sub-web 112.
The first sub-housing 111 may comprise two half-shells formed to be mutually covered, and the first sub-web 112 connects the two half-shells of the first sub-housing 111.
The connecting piece 13 may be pre-buried in the first sub-housing 111, or the connecting piece 13 may be pre-buried in the first sub-web 112, or of course, both the connecting piece 13 and the connecting piece 13 may be pre-buried in the first sub-housing 111 and the first sub-web 112.
In the embodiment where the connection 13 is pre-embedded in the first sub-web 112, the portion of the connection 13 extending out of the first sub-web 112 may be towards the leading edge of the blade 10 or towards the trailing edge of the blade 10, in the case where the first sub-segment 11 has two first sub-webs 112, the portion of the connection 13 extending out of the first sub-web 112 needs to be facing away from the other first sub-web 112, i.e. the connection 13 does not pass through both first sub-webs 112 at the same time.
The plurality of connection members 13 may be disposed at intervals along the circumferential direction of the first sub-housing 111, or the plurality of connection members 13 may be disposed at intervals along the direction from the first sub-section 11 to the second sub-section 12, and of course, the plurality of connection members 13 may be disposed at intervals along the circumferential direction of the first sub-housing 111 and at intervals along the direction from the first sub-section 11 to the second sub-section 12.
The plurality of connecting pieces 13 are embedded in the first sub-web 112, and then the plurality of connecting pieces 13 may be arranged on the first sub-web 112 in an array distribution manner, so as to improve the connection strength between the first sub-segment 11 and the second sub-segment 12.
Of course, the second sub-section 12 may also include a second sub-housing 121 and a second sub-web 122, and the second sub-housing 121 may be configured as a hollow structure having a second accommodating cavity 121a, and the second sub-web 122 is located in the second accommodating cavity 121a and connected to the first sub-housing 111. As such, a portion of the connection member 13 may be disposed to be embedded in the second sub-web 122; and/or, a part of the connecting piece 13 is pre-buried in the second sub-housing 121.
In this way, the first sub-housing 111 and the second sub-housing 121 are connected through the connecting member 14, and the first sub-web 112 and the second sub-web 122 are connected through the connecting member 14, so that each part of the first sub-section 11 and the second sub-section 12 has a connection relationship, and the connection strength of the first sub-section 11 and the second sub-section 12 is further improved.
Therefore, a part of the connecting piece 13 is pre-buried in the first sub-housing 111, or a part of the connecting piece 13 is pre-buried in the first sub-web 112, which is beneficial to further improving the connection strength of the first sub-section 11 and the second sub-section 12 and facilitating the connection of the first sub-section 11 and the second sub-section 12.
With continued reference to fig. 3 and 4, in some embodiments, the connecting member 14 is cylindrical, and a portion of the connecting member 14 is accommodated in the first accommodating cavity 111a and is adhered to the first sub-web 112 and the inner wall of the first sub-housing 111.
As such, a portion of the connecting member 14 is received in the first receiving cavity 111a and is connected to the first sub-web 112 and the first sub-housing 111, and another portion is received in the second receiving cavity 121a and is connected to the second sub-web 122 and the second sub-housing 121 of the second sub-segment 12.
The connecting member 14 is cylindrical, and the shape of the connecting member 14 may be set according to the specific shape of the inner walls of the first and second sub-sections 11 and 12.
Another portion of the connecting member 14 may be bonded to the inner wall of the second sub-housing 121 and the second sub-web 122 of the second sub-section 12 to increase the contact area of the connecting member 14 with the second sub-section 12, further increasing the connection strength of the second sub-section 12 with the first sub-section 11.
It can be understood that the connecting member 14 is provided to be cylindrical, and the connecting member 14 is attached to the first sub-web 112 and the inner wall of the first sub-housing 111, which is beneficial to improving the connection area between the connecting member 14 and the first sub-section 11, and further is beneficial to the connection strength between the first sub-section 11 and the second sub-section 12. In addition, the connecting member 14 is disposed in the second accommodating cavity 121a, so that the space of the outer surface of the blade 10 in the process can be avoided, the hydrodynamic appearance of the blade 10 can be maintained, and the risk that the appearance of the blade 10 is affected to a certain extent due to the connection of the first subsection 11 and the second subsection 12 is reduced. In this way, when the blade 10 is applied to the wind turbine generator system 100, the power generation efficiency of the wind turbine generator system 100 can be improved.
As shown in fig. 3 and 4, in some embodiments, the second sub-section 12 includes a second sub-housing 121 and a second sub-web 122, the second sub-housing 121 having a hollow structure of a second receiving cavity 121a, the second sub-web 122 being located within the second receiving cavity 121a and connecting the second sub-housing 121. The connection member 14 includes a first sub-member, a part of which is located in the first receiving chamber 111a and connected to the first sub-housing 111, and a second sub-member, a part of which is located in the second receiving chamber 121a and connected to the second sub-housing 121. A portion of the second sub-member is located in the first receiving chamber 111a and is connected to the first sub-web 112, and another portion is located in the second receiving chamber 121a and is connected to the second sub-web 122.
Thus, the first and second sub-elements each extend in a direction in which the first sub-section 11 points to the second sub-section 12, the number of the first and second sub-elements being one, or the number of the first and second sub-elements being plural, respectively. A plurality of first or second sub-pieces are provided as required to effect the connection of the first and second sub-sections 11, 12. The plurality of first sub-members may be disposed at intervals or the plurality of first sub-members may be disposed next to each other. Similarly, the plurality of second sub-members may be disposed at intervals, or the plurality of second sub-members may be disposed next to each other.
Providing the connecting member 14 comprising a first sub-piece and a second sub-piece facilitates the assembly of the first sub-section 11 and the second sub-section 12.
In some embodiments, the first sub-piece is in registry with the inner wall of the first sub-housing 111 and in registry with the inner wall of the second sub-housing 121; and/or the second sub-member is attached to the first sub-web 112 and attached to the second sub-web 122.
In this way, the specific shape of the first sub-member may be set according to the shapes of the first sub-housing 111 and the second sub-housing 121, so as to increase the connection area between the first sub-member and the first sub-housing 111 and the second sub-housing 121, and further increase the connection strength between the first sub-section 11 and the second sub-section 12. Alternatively, the specific shape of the second sub-member is set according to the shapes of the first sub-web 112 and the second sub-web 122, so as to increase the connection area of the second sub-member and the first sub-web 112 and the second sub-web 122, and also increase the connection strength of the first sub-section 11 and the second sub-section 12.
Therefore, the first sub-member is attached to the inner walls of the first sub-housing 111 and the second sub-housing 121, or the second sub-member is attached to the inner walls of the first sub-web 112 and the second sub-web 122, which is advantageous for improving the connection strength of the first sub-section 11 and the second sub-section 12.
In some embodiments, the plurality of connectors 13 are disposed at intervals along the circumference of the first sub-housing 111.
Alternatively, the plurality of connection members 13 may be disposed at intervals along the circumferential direction of the second sub-housing 121, and the specific intervals of the plurality of connection members 13 may be disposed according to the specific configuration of the second sub-housing 121, and the plurality of connection members 13 may be disposed at uniform intervals, or may be disposed at non-uniform intervals, and may be selected according to actual requirements.
Thus, along the circumference of the first sub-housing 111, the first sub-housing 111 is connected with the second sub-housing 121, and the connection force is relatively uniform, which is further beneficial to improving the connection strength of the first sub-housing 111 and the second sub-housing 121.
As shown in fig. 5, 7 and 8, in some embodiments, the connecting member 13 includes a fastening sub-member 131 and a supporting sub-member 132, the fastening sub-member 131 is connected to the supporting sub-member 132, the supporting sub-member 132 is pre-embedded in the first sub-section 11 or the second sub-section 12, and the fastening sub-member 131 is connected to the connecting member 14.
The supporting sub-component 132 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 132 is pre-embedded in the first sub-segment 11 or the second sub-segment 12 and is cured and formed together with the first sub-segment 11 or the second sub-segment 12, the connection strength between the connecting piece 13 and the first sub-segment 11 or the second sub-segment 12 is improved, and the bearing capacity of the connecting piece 13 is improved.
The fastening sub-member 131 may be a bolt, a screw, a pin, a rivet, or the like, and the fastening sub-member 131 is connected to the supporting sub-member 132 and fastened to the web.
Therefore, the arrangement of the connecting piece 13 including the fastening sub-piece 131 and the supporting sub-piece 132 is beneficial to improving the connection strength of the connecting piece 13 and the first sub-section 11 or the second sub-section, thereby improving the overall structural strength of the blade 10.
As shown in fig. 7, 8 and 11, in some embodiments, the fastening sub-assembly 131 includes a bolt, screw, pin or rivet, and the connecting member 14 has a mounting hole 14a, the mounting hole 14a being mated with the fastening sub-assembly 131.
The mounting hole 14a may be a light hole, and the fastening sub-member 131 is inserted into the mounting hole 14a, and the fastening sub-member 131 is fastened to the connecting member 14 by screwing, pinning, riveting, or the like.
Providing the fastening sub-assembly 131 comprising bolts, screws, pins or rivets facilitates a secure connection of the connection member 13 with the connection member 14, further simplifies the production process of the blade 10, and facilitates an improved connection strength of the first and second sub-sections 11, 12.
In some embodiments, the axial direction of the fastening sub 131 intersects a first direction X, which is the direction from the root of the blade 10 to the tip of the blade. Illustratively, the axial direction of the fastened component is perpendicular to the first direction X.
In this way, the connection between the fastening sub-piece 131 and the connecting member 14 occupies the space inside the first sub-section 11 and the second sub-section 12, so that the risk of interference caused by the connection between the first sub-section 11 and the second sub-section 12 and the connecting member 14 is reduced, and the convenience of connection between the first sub-section 11 and the second sub-section 12 is improved.
In addition, after the first sub-segment 11 and the second sub-segment 12 are assembled, the fastening sub-piece 131 has higher bearing capacity along the direction perpendicular to the axial direction of the fastening sub-piece 131, and the circumference of the fastening sub-piece 131 is intersected with the first direction X, so that the connection strength of the first sub-segment 11 and the second sub-segment 12 is further improved, and the risk of connection failure of the first sub-segment 11 and the second sub-segment 12 under the action of external load is reduced.
In some embodiments, the first sub-section 11 includes a first sub-housing 111 and a first sub-web 112, the first sub-housing 111 being a hollow structure having a first receiving cavity 111a, the first sub-web 112 being located within the first receiving cavity 111a and connecting the first sub-housing 111. The first sub-case 111 includes a first sub-skin, a first sub-core material, and a first sub-beam, and the first sub-beam and the first sub-core material are filled in the first sub-skin. The support sub 132 is disposed within the first sub-core.
Specifically, the first sub-core material, the first sub-beam and the first sub-skin are integrally formed through a pouring process. Before the pouring molding, the supporting sub-piece 132 is arranged between the first sub-skin and the first sub-core material, so that in the pouring molding process, the supporting sub-piece 132, the first sub-skin and the first sub-core material are integrally molded, the connection strength of the supporting sub-piece 132, the first sub-core material and the first sub-skin is improved, and the connection strength of the connecting piece 13 and the first sub-section 11 is improved.
Therefore, the supporting sub-component 132 is disposed in the first sub-core material, and the supporting sub-component 132 is disposed in the first sub-skin and can be connected or spaced from the first sub-skin, which is beneficial to further improving the connection strength between the connecting piece 13 and the first sub-segment 11, and is beneficial to improving the connection strength between the first sub-segment 11 and the second sub-segment 12 after the connecting piece 13 is connected with the connecting member 14.
As shown in fig. 5, 6, 9, and 10, in some embodiments, the support sub 132 includes a first support plate 1321, a second support plate 1322, and a third support plate 1323, with the normal to the first support plate 1321, the normal to the second support plate 1322, and the normal to the third support plate 1323 intersecting one another. The fastening sub-member 131 is connected to the first support plate 1321, the first support plate 1321 is connected to a side of the first sub-skin facing away from the first accommodating cavity 111a, and the second support plate 1322 and the third support plate 1323 are connected to the first sub-core material and are connected to a side of the first sub-skin adjacent to the first accommodating cavity 111 a.
The first support plate 1321, the second support plate 1322 and the third support plate 1323 may be integrally formed, or formed by the three, and connected into a whole by clamping, screwing or riveting.
Illustratively, the first support plate 1321, the second support plate 1322, and the third support plate 1323 are integrally formed together through a concrete casting process.
The normal direction of the first support plate 1321, the normal direction of the second support plate 1322, and the normal direction of the third support plate 1323 may be disposed at an acute angle, or at right angles. The first support plate 1321, the second support plate 1322 and the third support plate 1323 may be respectively in a flat plate shape, or the first support plate 1321, the second support plate 1322 and the third support plate 1323 may be provided with corresponding shapes according to the specific shape of the first sub-skin or the first sub-core of the first sub-section 11.
The first support plate 1321, the second support plate 1322 and the third support plate 1323 have higher bearing capacity along the normal direction of the first support plate 1321, the normal direction of the second support plate 1322 and the normal direction of the third support plate 1323 are arranged to be intersected in pairs, so that the support sub-members 132 have certain bearing capacity along the directions of intersecting three pairs, and the bearing capacity of the support sub-members 132 is improved, and the connection strength of the first sub-section 11 and the second sub-section 12 is improved.
The first support plate 1321 is connected to the side of the first sub-skin facing away from the first accommodating cavity 111a, which is favorable for improving the connection strength between the first support plate 1321 and the first sub-skin, and the second support plate 1322 and the third support plate 1323 are connected to the core material and connected to the side of the first sub-skin adjacent to the first accommodating cavity 111a, which is favorable for improving the connection strength between the second support plate 1322 and the third support plate 1323 and the first sub-skin and the first sub-core material, respectively. Thus, this arrangement is advantageous in improving the strength of the connection of the support sub-member 132 to the first sub-section 11.
Accordingly, the set support subassembly 132 includes a first support plate 1321, a second support plate 1322, and a third support plate 1323, with the normal of the first support plate 1321, the normal of the second support plate 1322, and the normal of the third support plate 1323 intersecting one another. And set up first backup pad 1321 and first sub-covering be connected with the one side that is facing away from first holding chamber 111a, second backup pad 1322 and third backup pad 1323 are connected in first sub-core to be connected with one side that is close to first holding chamber 111a of first sub-covering, be favorable to improving the bearing capacity of support sub-piece 132, and improve the joint strength of support sub-piece 132 and first sub-section 11, and then be favorable to improving the joint strength of first sub-section 11 and second sub-section 12.
It can be appreciated that the connecting piece 13 pre-buried in the second sub-section 12 may also be provided with a first supporting plate 1321, a second supporting plate 1322 and a third supporting plate 1323, and have a corresponding relationship with the first sub-section 11, so as to further improve the connection strength between the connecting piece 13 and the second sub-section 12, and be beneficial to further improving the connection strength between the first sub-section 11 and the second sub-section 12.
In some embodiments, the first sub-skin includes a skin body having a first opening for passing a portion of the connector 13 embedded in the first sub-section 11, and a reinforcement portion disposed to cover the first opening and connected to the skin body and the connector 13.
In the process of arranging the connecting piece 13 on the first subsection 11, a first opening is required to be formed in the first sub-skin for the connecting piece 13 to pass through, and after the connecting piece 13 and the first sub-skin are poured and molded together, the first opening is supplemented by arranging the reinforcing part, so that the integrity of the first sub-skin structure is maintained.
The reinforcing portion may be formed by casting resin onto the fibers, covering the first openings with a fiber cloth or the like, casting resin onto the fiber portion, and curing.
Therefore, the first sub-including the skin body and the reinforcing part are provided, so that the connection strength of the first sub-section 11 and the connecting piece 13 is improved, the integrity of the first sub-skin structure is maintained, and the structural strength of the first sub-section 11 is improved.
Similarly, a reinforcing part can be arranged at the connection part of the connecting piece 13 and the second subsection 12 so as to improve the structural strength of the second subsection 12.
In some embodiments, the first sub-section 11 further comprises a reinforcing skin 15 and a fastening nut 16, the fastening nut 16 being connected to the fastening sub-member 131, the reinforcing skin 15 covering the fastening nut 16 and the portion of the fastening sub-member 131 protruding out of the first sub-housing 111 and connecting the first sub-skin.
The portion of the connecting piece 13 extending out of the first sub-housing 111 is connected to the connecting member 14 and is connected by the fastening nut 16, and after the fastening connection is completed, the portion of the connecting piece 13 extending out of the first sub-housing 111 and the fastening nut 16 are covered by the reinforcing skin 15 and are connected to the first sub-skin.
The reinforcement skin 15 may comprise fibers and a resin, illustratively, a fiber cloth covering the connectors 13 and the fastening nuts 16, and then casting the resin, which is cured over the fiber cloth to form the reinforcement skin 15.
Therefore, the provision of the reinforcing skin 15 is advantageous for further improving the structural strength of the first subsection 11 and the connecting member 14, and thus the structural strength of the blade 10.
It will be appreciated that a reinforcing skin 15 may also be provided at the junction of the second sub-section 12 with the connector 13 to increase the strength of the connection of the second sub-section 12 with the connector 13 and the connection member 14, further providing structural strength to the blade 10.
The wind generating set 100 provided according to an embodiment of the present application includes the blade 10 provided in any of the above embodiments.
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.
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 application has been described in detail with reference to the foregoing embodiments, it will 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 application, and are intended to be included within the scope of the appended 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 (11)

1. A blade, comprising:
the first subsection comprises a first sub-shell and a first sub-web, the first sub-shell is a hollow structure body with a first accommodating cavity, and the first sub-web is positioned in the first accommodating cavity and connected with the first sub-shell; the first sub-shell comprises a first sub-skin, a first sub-core material and a first sub-beam, and the first sub-beam and the first sub-core material are filled in the first sub-skin;
the connecting pieces comprise insulating materials, each connecting piece comprises a fastening sub-piece and a supporting sub-piece, wherein part of the supporting sub-pieces of the connecting pieces are embedded in the first sub-section, the other part of the supporting sub-pieces of the connecting pieces are embedded in the second sub-section, the supporting sub-pieces embedded in the first sub-section comprise a first supporting plate, a second supporting plate and a third supporting plate, and the normal direction of the first supporting plate, the normal direction of the second supporting plate and the normal direction of the third supporting plate are intersected in pairs; the fastening sub-piece is connected to the first supporting plate, the first supporting plate is connected with one side of the first sub-skin, which is opposite to the first accommodating cavity, and the second supporting plate and the third supporting plate are connected to the first sub-core material and connected with one side of the first sub-skin, which is close to the first accommodating cavity;
a connecting member, the material of the connecting member comprising an insulating material, the connecting member being connected with the fastening sub-pieces of the plurality of the connectors to connect the first sub-section and the second sub-section.
2. The blade of claim 1, wherein the material of the connector comprises at least one of a fiber reinforced composite, rubber, silicone, and ceramic; and/or the material of the connecting member includes at least one of a fiber reinforced composite material, rubber, silica gel, and ceramic.
3. The blade of claim 1, wherein the connecting member is cylindrical and a portion of the connecting member is received in the first receiving cavity and conforms to the first sub-web and the inner wall of the first sub-housing.
4. The blade of claim 1, wherein the second sub-section comprises a second sub-housing having a hollow structure with a second receiving cavity and a second sub-web located within the second receiving cavity and connecting the second sub-housing;
the connecting member comprises a first sub-piece and a second sub-piece, one part of the first sub-piece is positioned in the first accommodating cavity and is connected with the first sub-shell, and the other part of the first sub-piece is positioned in the second accommodating cavity and is connected with the second sub-shell; and one part of the second sub-piece is positioned in the first accommodating cavity and connected with the first sub-web, and the other part of the second sub-piece is positioned in the second accommodating cavity and connected with the second sub-web.
5. The blade of claim 4, wherein the first sub-piece is in engagement with an inner wall of the first sub-housing and in engagement with an inner wall of the second sub-housing; and/or the second sub-piece is attached to the first sub-web and attached to the second sub-web.
6. The blade of claim 1, wherein a plurality of the connectors are disposed at intervals along the circumference of the first sub-housing.
7. The blade of claim 1, wherein the fastening sub-piece comprises a bolt, screw, pin, or rivet, and the connecting member has a mounting hole that mates with the fastening sub-piece.
8. The blade of claim 1, wherein the axial direction of the securing subassembly intersects a first direction, the first direction being a direction from a root of the blade toward a tip of the blade.
9. The blade of claim 1, wherein the first sub-skin comprises a skin body having a first opening for the passage of a portion of the connector embedded in the first sub-section, and a reinforcement portion disposed over the first opening and connected to the skin body and the connector.
10. The blade of claim 1, wherein the first subsection 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 a portion of the fastening sub-piece extending out of the first sub-shell and connecting the first sub-skin.
11. A wind power plant comprising a blade according to any of claims 1 to 10.
CN202310008073.4A 2023-01-04 2023-01-04 Blade and wind generating set Active CN116104687B (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102197214A (en) * 2008-08-21 2011-09-21 Lm玻璃纤维制品有限公司 Blade section for a wind turbine blade
CN202971054U (en) * 2012-11-13 2013-06-05 中国科学院工程热物理研究所 Multi-section wind driven generator blade connected by U-shaped reinforcing devices
WO2016189092A1 (en) * 2015-05-28 2016-12-01 Blade Dynamics Limited A wind turbine blade and method of assembling a wind turbine blade
CN113137347A (en) * 2021-05-08 2021-07-20 上海电气风电集团股份有限公司 Fan sectional type blade connecting structure, fan sectional type blade and manufacturing process
CN114412699A (en) * 2022-02-07 2022-04-29 常州市新创智能科技有限公司 Sectional type combined material wind-powered electricity generation blade

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102197214A (en) * 2008-08-21 2011-09-21 Lm玻璃纤维制品有限公司 Blade section for a wind turbine blade
CN202971054U (en) * 2012-11-13 2013-06-05 中国科学院工程热物理研究所 Multi-section wind driven generator blade connected by U-shaped reinforcing devices
WO2016189092A1 (en) * 2015-05-28 2016-12-01 Blade Dynamics Limited A wind turbine blade and method of assembling a wind turbine blade
CN113137347A (en) * 2021-05-08 2021-07-20 上海电气风电集团股份有限公司 Fan sectional type blade connecting structure, fan sectional type blade and manufacturing process
CN114412699A (en) * 2022-02-07 2022-04-29 常州市新创智能科技有限公司 Sectional type combined material wind-powered electricity generation blade

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