CN113530755A - Fan blade and wind driven generator - Google Patents
Fan blade and wind driven generator Download PDFInfo
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- CN113530755A CN113530755A CN202111012671.6A CN202111012671A CN113530755A CN 113530755 A CN113530755 A CN 113530755A CN 202111012671 A CN202111012671 A CN 202111012671A CN 113530755 A CN113530755 A CN 113530755A
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- 229920001187 thermosetting polymer Polymers 0.000 claims description 4
- 239000003351 stiffener Substances 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 5
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- 230000005540 biological transmission Effects 0.000 description 2
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- 238000005304 joining Methods 0.000 description 2
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- 230000015572 biosynthetic process Effects 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D1/00—Wind motors with rotation axis substantially parallel to the air flow entering the rotor
- F03D1/06—Rotors
- F03D1/065—Rotors characterised by their construction elements
- F03D1/0675—Rotors characterised by their construction elements of the blades
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- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2240/00—Components
- F05B2240/20—Rotors
- F05B2240/30—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor
- F05B2240/302—Segmented or sectional blades
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2280/00—Materials; Properties thereof
- F05B2280/40—Organic materials
- F05B2280/4007—Thermoplastics
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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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)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The application provides a fan blade and aerogenerator. The fan blade comprises a blade tip section and a blade root section. The tip section includes a first link end. The root section includes a second connection end. And overlapping the first connecting end and the second connecting end which are made of thermoplastic materials, then heating and softening the connecting ends, and bonding and fixing the connecting ends through pressure to connect the blade tip section and the blade root section. The wind power generator comprises a tower, a nacelle and a wind rotor. The wind wheel includes fan blades. So set up, make the quality of the junction of leaf tip section and leaf root section light, connect more reliably to it is less to carry the load influence to the whole machine, and simple structure, the factory production and the field operation of wind field of being convenient for.
Description
Technical Field
The application relates to the technical field of wind power, in particular to a fan blade and a wind driven generator.
Background
The segmented blade is a new technology developed for dividing a conventional fan blade into two or more segments so as to facilitate transportation of a longer fan blade in a mountain area. In the related art, the weight of the joint of the tip section and the root section divided into two sections is significantly increased, resulting in a large increase in the weight and cost of the fan blade itself, and inconvenience in factory machining and wind field implementation.
Disclosure of Invention
The application provides a fan blade and a wind driven generator aiming at reducing the mass of the joint of a blade tip section and a blade root section.
The application provides a fan blade, wherein includes:
a blade tip section, a blade root section; the blade tip section comprises a first connecting end arranged at the end part, and the blade root section comprises a second connecting end arranged at the end part; at least one of the first connecting end and the second connecting end is made of thermoplastic materials, and the first connecting end and the second connecting end are heated and softened and then are fixed through pressure bonding, so that the blade tip section is connected with the blade root section.
Optionally, the first connecting end includes a first step, the second connecting end includes a second step, and the first step and the second step are overlapped.
Optionally, the first steps are gradually reduced along the thickness direction of the first connecting end, the second steps are gradually reduced along the thickness direction of the second connecting end, and the first steps are in one-to-one corresponding lap joint with the second steps.
Optionally, the number of the first connection ends is multiple, the first connection ends are distributed at intervals along the circumferential direction of the blade tip section, the number of the second connection ends is multiple, the second connection ends are distributed at intervals along the circumferential direction of the blade root section, and the second connection ends and the first connection ends are arranged in a one-to-one correspondence manner.
Optionally, the surface of the first connection end is lower than the surface of the rest part of the blade tip section, so as to form a first concave space at the periphery of the first connection end, and the second connection end is accommodated in the first concave space and is connected with the first connection end; or
The surface of the second connection end is lower than the surface of the rest part of the blade root section so as to form a second sunken space at the periphery of the second connection end, and the first connection end is accommodated in the second sunken space and is jointed with the second connection end.
Optionally, the fan blade includes a reinforcing member, and the reinforcing member is connected to the first connection end and the second connection end, and covers the outer surfaces of the first connection end and the second connection end.
Optionally, the surface of the first connection end is lower than the surface of the rest of the blade tip section to form a first recessed space at the periphery of the first connection end, the surface of the second connection end is lower than the surface of the rest of the blade root section to form a second recessed space at the periphery of the second connection end, the first connection end is accommodated in the second recessed space and is wrapped outside the second connection end, and the reinforcement is accommodated in the second recessed space; or
The surface of the first connecting end is lower than the surface of the rest part of the blade tip section so as to form a first concave space at the periphery of the first connecting end, the surface of the second connecting end is lower than the surface of the rest part of the blade root section so as to form a second concave space at the periphery of the second connecting end, the second connecting end is accommodated in the first concave space and is wrapped outside the first connecting end, and the reinforcing member is arranged in the first concave space.
Optionally, the first connecting end is a prefabricated member, and is integrated with the blade tip section into an integrated structure in a pouring manner; and/or
The second connecting end is set as a prefabricated part and forms an integral structure with the blade root section in a pouring mode.
Optionally, at least one of the tip section and the root section is made of a thermoset material.
The present application further provides a wind power generator, comprising:
a tower;
a nacelle disposed atop the tower;
the wind wheel is arranged at the front end of the cabin and comprises the fan blade.
The application provides a fan blade, including tip section, root section. The tip section includes a first link end. The root section includes a second connection end. And overlapping the first connecting end and the second connecting end which are made of thermoplastic materials, then heating and softening the connecting ends, and bonding and fixing the connecting ends through pressure to connect the blade tip section and the blade root section. So set up, make the quality of the junction of leaf tip section and leaf root section light, connect more reliably to it is less to carry the load influence to the whole machine, and simple structure, the factory production and the field operation of wind field of being convenient for.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.
FIG. 1 is a schematic view of a portion of a wind turbine provided herein;
FIG. 2 is a schematic partially exploded view of a fan blade according to the present disclosure;
FIG. 3 is a schematic view of a portion of the fan blade shown in FIG. 2;
FIG. 4 is a cross-sectional view of the first and second connection ends of a fan blade of the present application;
fig. 5 is a schematic structural diagram of a supporting structure adopted in a process of overlapping a first connecting end and a second connecting end of a fan blade provided by the present application;
fig. 6 is a schematic structural diagram of a fan blade provided in the present application.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the description and in the claims does not indicate any order, quantity, or importance, but rather is used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. "plurality" or "a number" means two or more. Unless otherwise indicated, "front", "rear", "lower" and/or "upper" and the like are for convenience of description and are not limited to one position or one spatial orientation. The word "comprising" or "comprises", and the like, means that the element or item listed as preceding "comprising" or "includes" covers the element or item listed as following "comprising" or "includes" and its equivalents, and does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
The application provides a fan blade, including tip section, root section. The blade tip section is including setting up in the first link end of tip. The blade root section includes a second connection end disposed at the end. At least one of the first connection end and the second connection end is made of a thermoplastic material. And after the first connecting end and the second connecting end are heated and softened, the first connecting end and the second connecting end are bonded and fixed through pressure, so that the blade tip section is connected with the blade root section.
The application provides a wind driven generator, including the pylon, set up in the cabin of pylon top, set up in the wind wheel of cabin front end. The wind wheel includes fan blades.
The application provides a fan blade, including tip section, root section. The tip section includes a first link end. The root section includes a second connection end. And overlapping the first connecting end and the second connecting end which are made of thermoplastic materials, then heating and softening the connecting ends, and bonding and fixing the connecting ends through pressure to connect the blade tip section and the blade root section. So set up, make the quality of the junction of leaf tip section and leaf root section light, connect more reliably to it is less to carry the load influence to the whole machine, and simple structure, the factory production and the field operation of wind field of being convenient for.
Fig. 1 is a partial schematic structural diagram of a wind turbine 1 provided in the present application. As shown in fig. 1, the wind turbine 1 includes a tower 2, a nacelle 3 disposed at a top end of the tower 2, and a wind turbine 4 disposed at a front end of the nacelle 3. The wind wheel 4 comprises fan blades 5. The number of fan blades 5 is not limited, including but not limited to three.
Fig. 2 is a partially exploded schematic view of a fan blade 5 according to the present disclosure. As shown in fig. 1, the fan blade 5 includes a tip section 6 and a root section 7. The tip section 6 comprises a first connection end 8 arranged at the end. The blade root section 7 comprises a second connection end 9 arranged at the end. The blade tip section 6 and the blade root section 7 are arranged in a split mode, and the first connecting end 8 and the second connecting end 9 are used for connecting the blade tip section 6 and the blade root section 7. Specifically, at least one of the first connecting end 8 and the second connecting end 9 is made of thermoplastic material and can be softened after being heated. The first connecting end 8 and the second connecting end 9 are heated and softened and then are bonded and fixed through pressure, so that the blade tip section 6 is connected with the blade root section 7. So set up, make the quality of the junction of tip section 6 and blade root section 7 light, connect more reliably to it is less to carry the load influence to the whole machine, and simple structure, be convenient for factory production and wind field site operation. In some embodiments, the first and second connection ends 8 and 9 may be heated and pressurized using a heating and pressurizing device.
The fan blade 5 is formed by sectionally arranging the blade tip section 6 and the blade root section 7, so that the difficulty in transporting the fan blade 5 can be reduced, for example, the blade tip section 6 and the blade root section 7 can be transported sectionally, and the blade tip section 6 and the blade root section 7 are connected together through the first connecting end 8 of the blade tip section 6 and the second connecting end 9 of the blade root section 7 after being transported to a wind field.
In this embodiment, at least one of the first and second connection ends 8, 9 is made of a thermoplastic material. Thermoplastic material is a plastic having the property of softening by heating and hardening by cooling. The thermoplastic material is light in weight, the weight of the joint of the blade tip section 6 and the blade root section 7 cannot be greatly increased, and the overall load on the fan is small. Moreover, the thermoplastic material can be molded for many times, so that later maintenance is facilitated.
Fig. 3 is a partial structural schematic view of the fan blade 5 shown in fig. 2. Fig. 4 shows a sectional view of the connection of the first connection end 8 to the second connection end 9 of the fan blade 5 according to the present application. In some embodiments, the first link end 8 includes a first step 10. The second connection end 9 comprises a second step 11. The first step 10 overlaps the second step 11. The step surface of the first step 10 is opposite to the step surface of the second step 11. That is, if the step surface of the first step 10 faces upward, the step surface of the second step 11 faces downward; if the step of the first step 10 faces downward, the step of the second step 11 faces upward. Thus, the first step 10 and the second step 11 are oppositely overlapped. Thus, the first connecting end 8 and the second connecting end 9 have a plurality of joint surfaces and are positioned in different directions. For example, in the present embodiment, the first connecting end 8 is formed with a first vertical surface 22 and a first horizontal surface 23 at the first step 10, and the second connecting end 9 is formed with a second vertical surface 24 and a second horizontal surface 25 at the second step 11, wherein the first vertical surface 22 is joined with the second vertical surface 24, the first horizontal surface 23 is joined with the second horizontal surface 25, the two joining surfaces are vertical and horizontal, and are located at different orientations, and the two joining surfaces can bear external forces in different directions, so that the connecting strength is high, and the anti-damage capability is high. Of course, the engaging surface is not limited to the horizontal surface and the vertical surface, and may be an inclined surface inclined with respect to the horizontal direction.
In some embodiments, the first step 10 is provided in plurality and gradually decreases in the thickness direction of the first connection end 8. The second step 11 is provided in plurality and gradually decreases in the thickness direction of the second connection end 9. The first steps 10 and the second steps 11 are in one-to-one lap joint. Thus, at least two joint surfaces with different directions are formed at each of the first step 10 and the second step 11, so that the connection strength of the first connection end 8 and the second connection end 9 is further enhanced, and the overall stability of the connection of the blade tip section 6 and the blade root section 7 is improved.
In some embodiments, the plurality of first steps 10 may be formed by sequentially stacking a plurality of first connecting plates 12, and the plurality of second steps 11 may be formed by sequentially stacking a plurality of second connecting plates 13. It should be noted that the first step 10 and the second step 11 are not limited in the formation manner.
In some embodiments, the first connection ends 8 are provided in plurality, and the plurality of first connection ends 8 are spaced apart along the circumference of the blade tip section 6. The second connection ends 9 are provided in plurality, and the plurality of second connection ends 9 are distributed at intervals along the circumferential direction of the blade root section 7. The second connecting ends 9 are arranged in one-to-one correspondence with the first connecting ends 8. In this embodiment, the first connection ends 8 and the second connection ends 9 are provided in plural numbers, the plural first connection ends 8 and the plural second connection ends 9 are connected in a one-to-one correspondence manner, and the connection area is increased, so that the connection between the blade tip section 6 and the blade root section 7 is more stable. A plurality of first link 8 and a plurality of second link 9 one-to-one are connected, make the space of overlap joint each other rationalize, and then make the overlap joint each other effectual. In some embodiments, the fan blade 5 is hollow and flat. The first connecting ends 8 are at least two and are respectively connected to the inner walls of the blade tip sections 6 and are oppositely arranged, so that the stress on the blade tip sections 6 is uniform. Correspondingly, the second connecting ends 9 are at least two and are respectively connected to the inner walls of the blade root sections 7 and are oppositely arranged, so that the stress on the blade root sections 7 is uniform. Therefore, the connecting area of the first connecting end 8 and the second connecting end 9 is increased, and the blade tip section 6 and the blade root section 7 are stressed uniformly to enable the first connecting end 8 and the second connecting end 9 to be in lap joint, so that the blade tip section 6 and the blade root section 7 are connected more stably.
Fig. 5 is a schematic structural diagram of a support structure 18 used in the overlapping process of the first connection end 8 and the second connection end 9 of the fan blade 5 provided by the present application. Referring to fig. 4 and 5, in some embodiments, when the first connection end 8 and the second connection end 9 are heated and pressed, the first connection end 8 and the second connection end 9 are supported inside the fan blade 5 by using the support structure 18 to prevent the first connection end 8 and the second connection end 9 from being deformed. Specifically, the supporting structure 18 includes a first supporting member 19, a second supporting member 20, and a telescopic member 21 connected between the first supporting member 19 and the second supporting member 20. The first supporting member 19 abuts against a joint of the first connecting plate 12 and the second connecting plate 13, the second supporting member 20 abuts against a joint of the other first connecting plate 12 and the second connecting plate 13 relative to the first supporting member 19, and the first supporting member 19 and the second supporting member 20 are arranged oppositely. The telescopic member 21 facilitates the installation and removal of the integral support structure 18 by changing the length to change the distance between the first support member 19 and the second support member 20. In some embodiments, the first support 19 is a plate-like structure. The second support member 20 has a plate-like structure. In some embodiments, the telescopic member 21 is a rod-shaped structure and has a telescopic function.
In some embodiments, the surface of the first connection end 8 is lower than the surface of the remainder of the tip section 6 to form a first recessed space 14 at the periphery of the first connection end 8. The second connection end 9 is received in the first recessed space 14 to be engaged with the first connection end 8. The first concave space 14 provides a receiving space for the second connecting end 9, when the first connecting end 8 is connected with the second connecting end 9, a few seams can be formed on the fan blade 5 when the fan blade is viewed from the outside, and the stress concentration phenomenon on the fan blade 5 is reduced, so that the load transmission of the fan blade 5 is more uniform.
In some embodiments, the surface of the second connection end 9 is lower than the surface of the rest of the root section 7 to form a second recessed space 15 at the periphery of the second connection end 9. The first connection end 8 is received in the second recessed space 15 and engages with the second connection end 9. The second concave space 15 provides a receiving space for the first connecting end 8, and when the first connecting end 8 is connected with the second connecting end 9, a few joints can be formed on the fan blade 5 when viewed from the outside, so that the stress concentration phenomenon on the fan blade 5 is reduced, and the load transmission of the fan blade 5 is more uniform.
In some embodiments, the first connection end 8 is provided as a preform, formed as a unitary structure with the tip section 6 by means of pouring. The first connection end 8 may be pre-embedded in the tip section 6. The first connecting end 8 and the blade tip section 6 are integrally poured, so that the connection is more stable and the phenomenon of breakage is not easy to occur.
In some embodiments, the second connection end 9 is provided as a preform, integrally formed with the blade root section 7 by means of potting. The second connection end 9 can be pre-buried in the root section 7. The second connecting end 9 and the connecting part of the blade root section 7 are integrally poured, so that the connection is more stable and the fracture phenomenon is not easy to occur.
In some embodiments, at least one of the tip and root sections 6, 7 is made of a thermoset material. The thermosetting material has high melting temperature and high strength, is not easy to deform, and cannot cause the deformation of the blade tip section 6 and the blade root section 7 when the first connecting end 8 and the second connecting end 9 are heated and pressurized, so that the integral performance of the fan blade 5 cannot be influenced.
Fig. 6 is a schematic structural diagram of the fan blade 5 provided in the present application. As shown in fig. 6, the fan blade 5 includes a reinforcing member 16, and the reinforcing member 16 is connected to the first connection end 8 and the second connection end 9 and covers the outer surfaces of the first connection end 8 and the second connection end 9. After the first connecting end 8 is connected with the second connecting end 9, the reinforcing member 16 is coated on the surfaces of the first connecting end 8 and the second connecting end 9 and used for covering the position of the first connecting end 8 connected with the second connecting end 9, so that the blade tip section 6 and the blade root section 7 are connected more stably, and the whole surface of the fan blade 5 is smoother.
In some embodiments, the reinforcing members 16 are arranged in a plurality of numbers, the reinforcing members 16 are connected end to end, the surfaces of the first connecting end 8 and the second connecting end 9 are coated with 360 degrees of all-round coatings, the outer surface of the fan blade 5 is a curved surface, the reinforcing members 16 are arranged in a split mode, the processing difficulty can be reduced, the appearance of the fan blade 5 can be well matched, and the connecting effect is better. In some embodiments, the reinforcing members 16 are plate-like structures.
In some embodiments, the surface of the first connection end 8 is lower than the surface of the rest of the blade tip section 6 to form a first concave space 14 at the periphery of the first connection end 8, the surface of the second connection end 9 is lower than the surface of the rest of the blade root section 7 to form a second concave space 15 at the periphery of the second connection end 9, the first connection end 8 is accommodated in the second concave space 15 and wraps outside the second connection end 9, and the reinforcing member 16 is accommodated in the second concave space 15. That is, when the blade tip section 6 is connected to the blade root section 7, the second connection end 9 is on the outer side, the first connection end 8 is on the inner side, the first concave space 14 formed on the periphery of the first connection end 8 can accommodate the second connection end 9, and the second concave space 15 formed on the outer side of the second connection end 9 can accommodate the reinforcement 16, so that the outer contour size of the connection position of the first connection end 8 and the second connection end 9 can be reduced, and the connection structure is more compact. The reinforcement 16 is connected to the second recessed space 15 to reinforce the connection between the tip section 6 and the root section 7, and the overall surface of the fan blade 5 is made smooth by disposing the reinforcement 16 above the second recessed space 15. In some embodiments, the stiffener 16 is secured to the tip and root sections 6, 7 by pegs 17. In some embodiments, the first and second connection ends 8, 9 are secured by pegs 17.
In some embodiments, the second connection end 9 is received in the first concave space 14 and covers the outside of the first connection end 8, and the reinforcement member 16 is disposed in the first concave space 14. That is, when the blade tip section 6 is connected to the blade root section 7, the first connection end 8 is located on the outer side, the second connection end 9 is located on the inner side, the second concave space 15 formed on the outer side of the second connection end 9 can accommodate the first connection end 8, and the first concave space 14 formed on the periphery of the first connection end 8 can accommodate the reinforcement 16, so that the size of the outer contour of the connection position of the first connection end 8 and the second connection end 9 can be reduced, and the connection structure is more compact. The reinforcement 16 is disposed in the first recessed space 14 to reinforce the junction of the tip section 6 and the root section 7, and the overall surface of the fan blade 5 is made smoother by disposing the reinforcement 16 above the first recessed space 14.
In the process of connecting the blade tip section 6 and the blade root section 7, the first connecting end 8 pre-embedded in the inner wall of the blade tip section 6 is aligned with the second connecting end 9 pre-embedded in the inner wall of the blade root section 7 in a positioning mode, so that the situation that the connection reliability is reduced due to deviation in the subsequent connection process of the first connecting end 8 and the second connecting end 9 is avoided. Further, the first connecting end 8 and the second connecting end 9 are mutually overlapped, then the first connecting end 8 and the second connecting end 9 are heated and pressurized, so that the first connecting end 8 and the second connecting end 9 are softened, and then the cooling and solidification are carried out, so that the strength of the connecting part of the blade tip section 6 and the blade root section 7 is increased. Further, the reinforcing member 16 is covered on the first connecting end 8 and the second connecting end 9 and fixed, so that the stability and the reliability of the connecting part of the blade tip section 6 and the blade root section 7 are effectively improved. The blade tip section 6 and the blade root section 7 are connected. Therefore, the connecting part of the blade tip section 6 and the blade root section 7 is light in weight and more reliable in connection, so that the influence on the whole load is small, the structure is simple, and the factory production and the wind field operation are facilitated.
In addition, before the first connection end 8 and the second connection end 9 are heated and pressurized, the connection between the first connection end 8 and the second connection end 9 is abutted and attached through the support structure 18, so that the first connection end 8 and the second connection end 9 are prevented from being deformed in the heating and pressurizing process, and the reliability of connection between the blade tip section 6 and the blade root section 7 is affected.
The technical solutions disclosed in the embodiments of the present application can complement each other without generating conflicts.
Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the application being indicated by the following claims.
It will be understood that the present application is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the application is limited only by the appended claims.
Claims (10)
1. A fan blade is characterized by comprising a blade tip section and a blade root section; the blade tip section comprises a first connecting end arranged at the end part, and the blade root section comprises a second connecting end arranged at the end part; at least one of the first connecting end and the second connecting end is made of thermoplastic materials, and the first connecting end and the second connecting end are heated and softened and then are fixed through pressure bonding, so that the blade tip section is connected with the blade root section.
2. The fan blade of claim 1 wherein the first connection end comprises a first step and the second connection end comprises a second step, the first step overlapping the second step.
3. The fan blade according to claim 2, wherein the first step is provided in plurality and gradually decreases in the thickness direction of the first connection end, the second step is provided in plurality and gradually decreases in the thickness direction of the second connection end, and the first step and the second step are overlapped in a one-to-one correspondence manner.
4. The fan blade according to any one of claims 1 to 3, wherein a plurality of the first connection ends are provided, the plurality of the first connection ends are circumferentially spaced apart along the blade tip section, a plurality of the second connection ends are provided, the plurality of the second connection ends are circumferentially spaced apart along the blade root section, and the second connection ends are arranged in one-to-one correspondence with the first connection ends.
5. The fan blade according to any of claims 1 to 3, wherein a surface of the first connection end is lower than a surface of the remaining portion of the tip section to form a first recessed space at a periphery of the first connection end, and the second connection end is received in the first recessed space to be engaged with the first connection end; or
The surface of the second connection end is lower than the surface of the rest part of the blade root section so as to form a second sunken space at the periphery of the second connection end, and the first connection end is accommodated in the second sunken space and is jointed with the second connection end.
6. The fan blade according to any of claims 1 to 3, wherein the fan blade comprises a stiffener connected to the first connection end and the second connection end and wrapped around an outer surface of the first connection end and the second connection end.
7. The blower blade according to claim 6, wherein a surface of the first connection end is lower than a surface of the remaining portion of the tip section to form a first recessed space at a periphery of the first connection end, a surface of the second connection end is lower than a surface of the remaining portion of the root section to form a second recessed space at a periphery of the second connection end, the first connection end is received in the second recessed space and is wrapped outside the second connection end, and the reinforcement is received in the second recessed space; or
The surface of the first connecting end is lower than the surface of the rest part of the blade tip section so as to form a first concave space at the periphery of the first connecting end, the surface of the second connecting end is lower than the surface of the rest part of the blade root section so as to form a second concave space at the periphery of the second connecting end, the second connecting end is accommodated in the first concave space and is wrapped outside the first connecting end, and the reinforcing member is arranged in the first concave space.
8. The fan blade according to any of claims 1 to 3, wherein the first connection end is provided as a preform and is formed as an integral structure with the blade tip section by means of pouring; and/or
The second connecting end is set as a prefabricated part and forms an integral structure with the blade root section in a pouring mode.
9. The fan blade according to any of claims 1 to 3, wherein at least one of the tip section and the root section is made of a thermoset material.
10. A wind power generator, comprising:
a tower;
a nacelle disposed atop the tower;
a wind rotor arranged at the front end of the nacelle, the wind rotor comprising a fan blade according to any of the claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111012671.6A CN113530755A (en) | 2021-08-31 | 2021-08-31 | Fan blade and wind driven generator |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111012671.6A CN113530755A (en) | 2021-08-31 | 2021-08-31 | Fan blade and wind driven generator |
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| CN113530755A true CN113530755A (en) | 2021-10-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111012671.6A Pending CN113530755A (en) | 2021-08-31 | 2021-08-31 | Fan blade and wind driven generator |
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| CN114474792A (en) * | 2022-02-23 | 2022-05-13 | 上海电气风电集团股份有限公司 | Manufacturing method of fan blade, fan blade and wind turbine generator |
| CN114851581A (en) * | 2022-05-09 | 2022-08-05 | 常州市宏发纵横新材料科技股份有限公司 | Modular blade connecting structure, method and tool |
| CN116335873A (en) * | 2022-12-19 | 2023-06-27 | 北京金风科创风电设备有限公司 | Blade and method for connecting blade |
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| CN113021916A (en) * | 2021-03-30 | 2021-06-25 | 中材科技风电叶片股份有限公司 | Bonding module and size design method thereof, wind power blade and bonding method thereof |
| CN113137346A (en) * | 2021-05-08 | 2021-07-20 | 上海电气风电集团股份有限公司 | Sectional type fan blade and assembling method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113021916A (en) * | 2021-03-30 | 2021-06-25 | 中材科技风电叶片股份有限公司 | Bonding module and size design method thereof, wind power blade and bonding method thereof |
| CN113137346A (en) * | 2021-05-08 | 2021-07-20 | 上海电气风电集团股份有限公司 | Sectional type fan blade and assembling method thereof |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114474792A (en) * | 2022-02-23 | 2022-05-13 | 上海电气风电集团股份有限公司 | Manufacturing method of fan blade, fan blade and wind turbine generator |
| CN114474792B (en) * | 2022-02-23 | 2024-04-23 | 上海电气风电集团股份有限公司 | Manufacturing method of fan blade, fan blade and wind turbine generator |
| CN114851581A (en) * | 2022-05-09 | 2022-08-05 | 常州市宏发纵横新材料科技股份有限公司 | Modular blade connecting structure, method and tool |
| CN114851581B (en) * | 2022-05-09 | 2022-11-25 | 新创碳谷集团有限公司 | Modular blade connecting structure, method and tool |
| CN116335873A (en) * | 2022-12-19 | 2023-06-27 | 北京金风科创风电设备有限公司 | Blade and method for connecting blade |
| WO2024131043A1 (en) * | 2022-12-19 | 2024-06-27 | 北京金风科创风电设备有限公司 | Blade and blade connection method |
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