CN107676221B - Wind power blade - Google Patents
Wind power blade Download PDFInfo
- Publication number
- CN107676221B CN107676221B CN201711015966.2A CN201711015966A CN107676221B CN 107676221 B CN107676221 B CN 107676221B CN 201711015966 A CN201711015966 A CN 201711015966A CN 107676221 B CN107676221 B CN 107676221B
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- Prior art keywords
- blade
- blade root
- root baffle
- wind power
- elastic
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- 239000012790 adhesive layer Substances 0.000 claims abstract description 15
- 239000000463 material Substances 0.000 claims abstract description 12
- 239000010410 layer Substances 0.000 claims abstract description 9
- 239000013013 elastic material Substances 0.000 claims description 7
- 239000006261 foam material Substances 0.000 claims description 3
- 229920001296 polysiloxane Polymers 0.000 claims 1
- 239000000853 adhesive Substances 0.000 abstract description 9
- 230000001070 adhesive effect Effects 0.000 abstract description 9
- 239000003292 glue Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000003550 marker Substances 0.000 description 2
- 229920002379 silicone rubber Polymers 0.000 description 2
- 239000004945 silicone rubber Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000012217 deletion Methods 0.000 description 1
- 230000037430 deletion Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
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
- F03D1/065—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
-
- 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
-
- 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
Landscapes
- 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)
- Wind Motors (AREA)
Abstract
The invention discloses a wind power blade, wherein the inner wall of a blade body is connected with the outer edge of a blade root baffle plate through a plurality of elastic connection structures which are distributed at intervals, and an elastic filling material layer is arranged at the position of the inner wall of the blade body, which is not connected with the outer edge of the blade root baffle plate. Each elastic connection structure comprises an elastic connection piece, a first adhesive layer and a second adhesive layer. The elastic connecting piece is provided with a first connecting surface and a second connecting surface which are respectively corresponding to the inner wall of the blade body and the outer edge of the blade root baffle, and the width of the first connecting surface is larger than that of the second connecting surface. The first adhesive layer is adhered between the first connecting surface and the inner wall of the blade body. The second adhesive layer is adhered between the second connecting surface and the outer edge of the blade root baffle. The invention can avoid the problem of overhigh stress level of the local position of the blade root baffle, improves the safety of the wind power blade and the fan installed by the wind power blade, has smaller adhesive dosage and further reduces the cost of the wind power blade.
Description
Technical Field
The invention relates to the technical field of wind power blades, in particular to a wind power blade.
Background
In the running process of the fan, if the residual articles in the blades fall down to the hub, the hub can be damaged, and the normal operation of the fan is affected. To avoid the above problems, existing wind power blades typically employ a design that mounts a blade root baffle at the blade root to separate the blade cavity from the hub. In addition, in order to ensure the maintenance safety of the blade in the static maintenance process, the blade root baffle needs to bear corresponding external force load, so that the blade root baffle needs to be ensured not to crack and break in the maintenance process, and safety accidents are caused.
On the bearing, the existing blade root baffle and blade root are connected in a mode of pasting glass fiber cloth by hand, and the blade root baffle are connected in a rigid mode. Therefore, in the running process of the fan, the deformation of the blade root can be directly transmitted to the blade root baffle, so that the stress level of the local position of the blade root baffle is too high, structural damage is generated under the action of fatigue load, and the safe running of the fan is further affected.
Furthermore, the blade root baffle and the blade root are all connected by elastic glue, and the rigid connection between the blade root and the blade root baffle can be changed into flexible connection (elastic connection), so that the effect of weakening the extrusion of the blade root baffle caused by the deformation of the blade root is achieved. However, the amount of the elastic glue in the scheme is huge, so that the cost of the blade root baffle is greatly increased.
Disclosure of Invention
It is a primary object of the present invention to overcome at least one of the above-mentioned drawbacks of the prior art and to provide a wind power blade with a high safety and a low cost.
In order to achieve the above purpose, the invention adopts the following technical scheme:
according to one aspect of the invention, a wind power blade is provided, comprising a blade body and a blade root baffle, wherein the blade root baffle is arranged in a cavity of the blade body adjacent to a blade root. The blade body inner wall is connected with the blade root baffle outer edge through a plurality of elastic connection structures distributed at intervals, and an elastic filling material layer is arranged at the position between the blade body inner wall and the blade root baffle outer edge, which is not connected with the elastic connection structures. Each elastic connecting structure comprises an elastic connecting piece, a first adhesive layer and a second adhesive layer. The elastic connecting piece is provided with a first connecting surface and a second connecting surface which are respectively corresponding to the inner wall of the blade body and the outer edge of the blade root baffle, and the width of the first connecting surface is larger than that of the second connecting surface. The first adhesive layer is adhered between the first connecting surface and the inner wall of the blade body. The second adhesive layer is adhered between the second connecting surface and the outer edge of the blade root baffle.
According to one embodiment of the invention, the first connecting surface of the elastic connecting piece is provided with a first slot, and the first slot is filled with elastic material.
According to one embodiment of the present invention, the width of the first slotted notch is greater than the width of the slot bottom.
According to one embodiment of the present invention, at least one protruding strip is protruding from the bottom of the first slot, so that the first slot has a V-shape or a continuous V-shape.
According to one embodiment of the present invention, the first slot has an arc shape or an inverted trapezoid shape.
According to one embodiment of the present invention, the elastic material is a foam material or a silicone rubber.
According to one embodiment of the present invention, a second slot is formed in the second connection surface of the elastic connection member, and the outer edge portion of the blade root baffle is clamped into the second slot.
According to one embodiment of the invention, the blade root baffle has an inner surface facing the blade tip of the blade body and an outer surface facing the blade root, and the height of the groove wall of the second slot on the inner surface side of the blade root baffle is greater than the height of the groove wall on the outer surface side of the blade root baffle.
According to one embodiment of the invention, a plurality of said elastic connection structures are evenly distributed.
According to one embodiment of the invention, a manhole is formed in the middle of the blade root baffle, and a manhole cover plate is detachably mounted on the blade root baffle so as to openably and closably close the manhole.
According to the technical scheme, the wind power blade provided by the invention has the advantages and positive effects that:
according to the wind power blade provided by the invention, the flexible connection between the blade body and the blade root baffle is realized by utilizing the plurality of elastic connection structures, so that the problem of overhigh stress level at the local position of the blade root baffle is avoided, and the safety of the wind power blade and the fan mounted by the wind power blade is improved. Furthermore, through the setting of a plurality of elastic connection structures and elasticity filling material layer, can realize the complete seal between blade body and the blade root baffle, guarantee the leakproofness of blade root baffle. In addition, compare in the current scheme that all adopts elastic glue to connect, this application bonding glue quantity is less, further reduces wind-powered electricity generation blade's cost.
Drawings
Various objects, features and advantages of the present invention will become more apparent from the following detailed description of the preferred embodiments of the invention, when taken in conjunction with the accompanying drawings. The drawings are merely exemplary illustrations of the invention and are not necessarily drawn to scale. In the drawings, like reference numerals refer to the same or similar parts throughout. Wherein:
FIG. 1 is a partial schematic view of a wind power blade according to an exemplary embodiment;
FIG. 2 is another partial schematic view of the wind turbine blade shown in FIG. 1;
FIG. 3 is an enlarged schematic view of portion A of FIG. 2;
fig. 4a to 4d are schematic views of the elastic connection member of the wind power blade shown in fig. 1, respectively.
Wherein reference numerals are as follows:
100. a blade body;
110. blade root;
111. a blade root skin;
120. a cavity;
200. blade root baffle;
300. an elastic connection structure;
310. an elastic connection member;
310a, elastic connecting piece;
310b, elastic connecting piece;
310c, elastic connecting piece;
310d, elastic connecting piece;
311. a first slot;
311a, first grooving;
311b, first grooving;
311c, first grooving;
311d, first grooving;
3111. a convex strip;
3111b, raised strips;
312. an elastic material;
313. a second slot;
3131. a groove wall;
3132. a groove wall;
400. a layer of elastomeric filler material;
500. a manhole cover plate;
510. a bolt;
520. a handle.
Detailed Description
Typical embodiments embodying features and advantages of the present invention will be described in detail in the following description. It will be understood that the invention is capable of various modifications in various embodiments, all without departing from the scope of the invention, and that the description and drawings are intended to be illustrative in nature and not to be limiting.
In the following description of various exemplary embodiments of the invention, reference is made to the accompanying drawings, which form a part hereof, and in which are shown by way of illustration various exemplary structures, systems, and steps in which aspects of the invention may be practiced. It is to be understood that other specific arrangements of parts, structures, example devices, systems, and steps may be utilized and structural and functional modifications may be made without departing from the scope of the present invention. Moreover, although the terms "end," "side," "middle," and the like may be used in this description to describe various example features and elements of the invention, these terms are used herein for convenience only, e.g., in terms of the orientation of the examples depicted in the figures. Nothing in this specification should be construed as requiring a particular three-dimensional orientation of the structure in order to fall within the scope of the invention.
Referring to FIG. 1, a partial schematic view of a wind power blade capable of embodying principles of the present invention is representatively illustrated in FIG. 1. In this exemplary embodiment, the wind power blade provided by the invention is described by taking a blade of a wind turbine generator set as an example. Those skilled in the art will readily appreciate that numerous modifications, additions, substitutions, deletions, or other changes may be made to the specific embodiments described below for use in other types of plant blades, and such changes are still within the principles of the wind turbine blade as set forth herein.
As shown in fig. 1, in the present embodiment, the wind power blade according to the present invention mainly includes a blade body 100, a blade root baffle 200, four elastic connection structures 300, and an elastic filler material layer 400. Referring to FIGS. 2 and 3 in combination, another partial schematic view of a wind turbine blade, and in particular a partial cross-sectional view of a portion of a blade root 110 of the wind turbine blade, along an axial direction, is representatively illustrated in FIG. 2; an elastic connection 300 of a wind blade capable of embodying the principles of the present invention, an enlarged schematic view of section a in fig. 2, is representatively illustrated in fig. 3. The structure, connection mode and functional relation of the main components of the wind power blade provided by the invention are described in detail below with reference to the accompanying drawings.
As shown in fig. 1 and 2, in the present embodiment, the blade root baffle 200 is disposed in the cavity 120 of the blade body 100 adjacent to the blade root 110, and for example, the axial distance between the blade root baffle 200 and the blade root end surface may be designed to be between 200mm and 1500 mm. The inner wall of the blade body 100 is connected with the outer edge of the blade root baffle 200 through four elastic connection structures 300 distributed at intervals, and an elastic filling material layer 400 is arranged at a position between the inner wall of the blade body 100 and the outer edge of the blade root baffle 200, where the elastic connection structures 300 are not connected.
As shown in fig. 1, in the present embodiment, the section of the blade body 100 adjacent to the blade root 110 is circular, so that the blade root baffle 200 is substantially circular in shape matching the section of the blade body 100, and the diameter of the blade root baffle 200 is slightly smaller than the inner diameter of the cavity 120 at the corresponding position of the blade body 100 to which it is connected. In other embodiments, when the cross section of the blade body 100 where the blade root baffle 200 is disposed has another shape, the shape of the blade root baffle 200 may be correspondingly adjusted to a shape corresponding to the above cross section, and the size is slightly smaller than the inner diameter of the cavity 120 at the connection position. Accordingly, compared to the rigid connection manner in which the baffle is directly connected to the inner wall of the blade cavity 120 in the prior art, the present invention can avoid the extrusion of the blade root baffle 200 caused by the deformation of the blade body 100.
As shown in fig. 1, in the present embodiment, based on the design that the cross section of the blade body 100 and the blade root baffle 200 at the corresponding position is substantially circular, four elastic connection structures 300 are uniformly distributed on the circular path between the blade body 100 and the blade root baffle 200, that is, are located at the relative positions of substantially 0 °, 90 °, 180 °, 270 ° of the circular path. Accordingly, the stress of the combined structure of the elastic connection structure 300 for connecting the blade body 100 and the blade root baffle 200 can be more uniform, and the problem of damage to the blade root baffle 200 caused by uneven stress is avoided. In other embodiments, the number and distribution of the elastic connection structures 300 may be one, two, three or more than three, which are distributed at intervals, but not limited to this embodiment. Further, the plurality of elastic connection structures 300 may be distributed in a uniform manner. Furthermore, when the cross sections of the blade body 100 and the blade root baffle 200 at the corresponding positions are in other shapes, the number and distribution positions of the elastic connection structures 300 can be flexibly adjusted according to the stress values at the different positions of the structure, which is not limited by the present embodiment.
As shown in fig. 3, in the present embodiment, for one elastic connection structure 300, it generally includes an elastic connection member 310, a first adhesive layer, and a second adhesive layer. Specifically, the elastic connection member 310 has a first connection surface corresponding to an inner wall of the blade body 100 (i.e., a cavity wall of the cavity 120) and a second connection surface corresponding to an outer edge of the root guard 200, and a width of the first connection surface is greater than a width of the second connection surface. The first adhesive layer is adhered between the first connection surface and the inner wall of the blade body 100. The second adhesive layer is adhered between the second connection surface and the outer edge of the root baffle 200.
It should be noted that, as shown in fig. 3, the conventional wind power blade is actually a combined structure of the root skin 111 (skin) and the glass fiber reinforced plastic wrapped therein, and for convenience of description, the exemplary description of the present specification refers to the above combined structure collectively referred to as the blade body 100, and the connection end 222 of the expansion joint 220 is actually connected to the root baffle 200 and the root skin 111 in this embodiment, which is described herein. In the practice of the present invention, the root skin 111 may refer to similar structures or materials of existing wind blades and will not be described herein.
As shown in fig. 3, in the present embodiment, a first slot 311 is formed on a first connecting surface of the elastic connecting member 310, and the first slot 311 is filled with an elastic material 312. Wherein the width of the notch of the first slot 311 is preferably larger than the width of the bottom of the slot. In addition, the elastic material 312 may be a foam material or a silicone rubber.
Further, as shown in fig. 3, in the present embodiment, one protruding strip 3111 is protruding from the bottom of the first slot 311, so that the first slot 311 has a substantially continuous shape of two "V" shapes, or a shape similar to a "W" shape. Still further, a partially planar groove bottom is preferably still reserved between the protruding strip 3111 and the two groove walls 3131 of the first groove 311. Through the above design, the structural strength of the elastic connector 310 can be further ensured, and the stress of the structure is dispersed.
Fig. 4a to 4d each show an exemplary variant of the elastic connection 310 in a further embodiment. As shown in fig. 4a, the bottom of the first slot 311a of the elastic connecting piece 310a may not have a convex strip, i.e. the bottom of the first slot 311a is a complete planar structure, and the shape of the first slot 311a is approximately inverted trapezoid. As shown in fig. 4b, the number of protruding bars 3111b provided at the bottom of the first slot 311b is two or more (two are shown in the drawing) in the elastic connector 310b, that is, the shape of the first slot 311b is substantially a continuous plurality of V shapes. The elastic connector 310c shown in fig. 4c has a first slot 311c with an arc shape. As shown in FIG. 4d, the first slot 311d of the elastic connector 310d has a substantially V-shape. In the above illustrated embodiment, only the shape change of the first grooves 311a, 311b, 311c, 311d is described, and the shape of each second groove 313a, 313b, 313c, 313d is substantially the same as the shape of the second groove 313 in the present embodiment, and will be described in the following, and will not be repeated here.
As shown in fig. 3, in the present embodiment, a second slot 313 is formed on the second joint surface of the elastic connection member 310. When the inner wall of the blade body 100 is connected to the outer edge of the blade root baffle 200 by the elastic connection structure 300, the outer edge portion of the blade root baffle 200 is clamped into the second slot 313. Specifically, the second slot 313 has a shape substantially matching the cross-sectional shape of the outer edge portion of the blade root baffle 200, such as a "n" shape as shown in the figures. In other embodiments, the shape of the second slot 313 may be trapezoid, arc, etc. according to the different shapes of the cross section of the outer edge portion of the blade root baffle 200, and is not limited to this embodiment.
Further, as shown in fig. 3, in the present embodiment, for the two side surfaces of the blade root baffle 200, where the surface facing the blade tip of the blade body 100 is defined as the inner surface and the surface facing the blade root 110 is defined as the outer surface, the height of the groove wall 3131 of the second groove 313 on the inner surface side of the blade root baffle 200 is preferably greater than the height of the groove wall 3132 on the outer surface side of the blade root baffle 200. Through the design, the combined structure strength of the blade root baffle 200 and the elastic connecting piece 310 can be further ensured by adapting to different stress conditions of the two side surfaces of the blade root baffle 200, and meanwhile, stress borne by the blade root baffle 200 is dispersed, so that the problem of damage of the blade root baffle 200 caused by stress concentration is avoided.
In the present embodiment, the distance from the top of the ridge 3111 to the notch of the first slot 311 is preferably 5mm or more. The height of the groove wall 3131 of the second groove 313 on the inner surface side of the blade root baffle 200 may be preferably 10mm or more, and the difference in height between the groove walls 3131, 3132 on both sides of the second groove 313 may be preferably 5mm or more. Further, the distance from the bottom of the second groove 313 to the notch of the first groove 311 may be approximately preferably 10mm to 80mm. In other embodiments, the above dimensions may be flexibly adjusted according to the model dimensions of the wind power blade or the required stress conditions, and are not limited to this embodiment.
It should be noted herein that the wind power blade shown in the drawings and described in this specification is merely one example of the many types of wind power blades that can employ the principles of the present invention. It should be clearly understood that the principles of the present invention are in no way limited to any of the details of the wind turbine blade or any of the components of the wind turbine blade shown in the drawings or described in the present specification.
For example, as shown in fig. 1 and 2, in the present embodiment, the root baffle 200 is further provided with a manhole cover plate 500. Specifically, a manhole is opened in the middle of the blade root baffle 200, and a manhole cover plate 500 is detachably installed at the manhole of the blade root baffle 200 for openably and closably closing the manhole.
Further, as shown in fig. 1 and 2, in the present embodiment, the manhole cover plate 500 and the blade root baffle 200 are detachably attached to each other by a plurality of bolts 510. And, a handle 520 is further provided on the manhole cover 500 to facilitate the opening and closing operation of the manhole cover 500. In other embodiments, the above-mentioned mounting manner may be implemented by other fixing members such as a lock pin and a rivet, which is not limited to the present embodiment.
In view of the above, the following describes an exemplary process for installing a blade root baffle of a wind turbine blade according to the present invention, in combination with the above description about each component of the wind turbine blade.
Positioning of the elastic connection structure: according to the model of the selected wind power blade and the length requirement of the blade root baffle plate from the blade root, the axial position of the elastic connection structure is marked and positioned on the blade body by utilizing tools such as a steel plate ruler, a marker pen and the like. Meanwhile, the chordwise position of each elastic connecting structure on the circumference of the base circle of the blade body can be marked and positioned by using tools such as a marker pen, a tape measure and the like. Accordingly, the bonding position of the elastic connection structure on the bonding pitch circle of the blade body can be determined by utilizing the axial position and the chord position.
Surface treatment of bonding positions: the inner wall of the blade body at the bonding position is polished, and surface cleaning work is performed, so that the bonding surface is ensured to be free of impurities and dirt.
Bonding of blade body and elastic connection piece: and uniformly smearing the prepared adhesive on the bonding position of the blade root of the blade body by using tools such as a scraper and the like, and fully coating the adhesive on the bonding surface. And meanwhile, the prepared adhesive is uniformly smeared on the first connecting surface of the elastic connecting piece by utilizing tools such as a scraper and the like, and the first connecting surface is fully smeared with the adhesive. The first connecting surface of the elastic connecting piece is aligned with the bonding position of the blade root of the blade body, and the first connecting surface and the bonding position of the blade root of the blade body are bonded. The adhesive (i.e., the first adhesive layer) is cured by heating using a tool such as a heat gun to provide the adhesive with a preliminary adhesive strength and cured at ambient temperature.
The elastic connecting piece is bonded with the blade root baffle plate: and the second connecting surface of the elastic connecting piece, which is bonded with the baffle, is fully coated with bonding adhesive. And (3) horizontally pushing the blade root baffle into the second groove of the elastic connecting piece and fixing, and curing at the ambient temperature. And then, elastic filling materials (foaming materials, silica gel and the like) are filled in gaps between the blade body and the blade root baffle plate for connecting the elastic connection structure, and the formed elastic filling material layer can play a role in sealing.
And (3) manhole cover plate installation: the blade root baffle plate is fixedly connected with the manhole cover plate through a plurality of bolts
The installation of the blade root baffle of the wind power blade provided by the invention is approximately completed.
In summary, according to the wind power blade provided by the invention, the flexible connection between the blade body and the blade root baffle is realized by utilizing the plurality of elastic connection structures, so that the problem of overhigh stress level of the local position of the blade root baffle is avoided, and the safety of the wind power blade and the fan mounted by the wind power blade is improved. Furthermore, through the setting of a plurality of elastic connection structures and elasticity filling material layer, can realize the complete seal between blade body and the blade root baffle, guarantee the leakproofness of blade root baffle. In addition, compare in the current scheme that all adopts elastic glue to connect, this application bonding glue quantity is less, further reduces wind-powered electricity generation blade's cost.
Exemplary embodiments of wind power blades according to the present invention are described and/or illustrated in detail above. Embodiments of the invention are not limited to the specific embodiments described herein, but rather, components and/or steps of each embodiment may be utilized independently and separately from other components and/or steps described herein. Each component and/or each step of one embodiment may also be used in combination with other components and/or steps of other embodiments. When introducing elements/components/etc. that are described and/or illustrated herein, the terms "a," "an," and "the" are intended to mean that there are one or more of the elements/components/etc. The terms "comprising," "including," and "having" are intended to be inclusive and mean that there may be additional elements/components/etc., in addition to the listed elements/components/etc. Furthermore, the terms "first" and "second" and the like in the claims and in the description are used for descriptive purposes only and not for numerical limitation of their subject matter.
While the invention has been described in terms of various specific embodiments, those skilled in the art will recognize that the invention can be practiced with modification within the spirit and scope of the claims.
Claims (10)
1. The wind power blade comprises a blade body and a blade root baffle plate, wherein the blade root baffle plate is arranged in a cavity of the blade body, which is close to a blade root, and the wind power blade is characterized in that the inner wall of the blade body is connected with the outer edge of the blade root baffle plate through a plurality of elastic connection structures which are distributed at intervals, and an elastic filling material layer is arranged at a position between the inner wall of the blade body and the outer edge of the blade root baffle plate, which is not connected with the elastic connection structures; wherein each of the elastic connection structures includes:
the elastic connecting piece is provided with a first connecting surface and a second connecting surface which are respectively corresponding to the inner wall of the blade body and the outer edge of the blade root baffle, and the width of the first connecting surface is larger than that of the second connecting surface;
the first adhesive layer is adhered between the first connecting surface and the inner wall of the blade body; and
and the second adhesive layer is adhered between the second connecting surface and the outer edge of the blade root baffle.
2. The wind power blade of claim 1, wherein the first connection surface of the elastic connection member is provided with a first slot, and the first slot is filled with an elastic material.
3. The wind blade of claim 2, wherein the width of the first slotted notch is greater than the width of the slot bottom.
4. A wind power blade according to claim 3, wherein the bottom of the first slot is convexly provided with at least one protruding strip, such that the first slot has a "V" shape or a continuous "V" shape.
5. A wind power blade according to claim 3, wherein the first slot has an arcuate or inverted trapezoidal shape.
6. Wind blade according to claim 2, wherein the elastic material is a foam material or a silicone.
7. A wind power blade according to claim 1, wherein the second connection surface of the elastic connection member is provided with a second slot, and the outer edge portion of the blade root baffle is clamped into the second slot.
8. The wind blade of claim 7, wherein the blade root baffle has an inner surface facing the blade tip of the blade body and an outer surface facing the blade root, and wherein the height of the groove wall of the second slot on the inner surface side of the blade root baffle is greater than the height of the groove wall on the outer surface side of the blade root baffle.
9. A wind power blade according to claim 1, wherein a plurality of said elastic connection structures are evenly distributed.
10. A wind power blade according to claim 1, wherein a manhole is provided in the middle of the blade root baffle, and a manhole cover is detachably mounted to the blade root baffle to openably and closably close the manhole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN111102140B (en) * | 2020-01-03 | 2023-12-26 | 国电联合动力技术有限公司 | Wind power blade, root platform structure of wind power blade and installation method of root platform structure |
| CN111425355B (en) * | 2020-04-02 | 2021-07-02 | 连云港中复连众复合材料集团有限公司 | Assembling method of novel breathing port of megawatt wind driven generator blade |
| CN112360681A (en) * | 2020-10-29 | 2021-02-12 | 中材科技（邯郸）风电叶片有限公司 | Wind power blade and production process |
| CN112943527B (en) * | 2021-04-09 | 2023-01-10 | 吉林重通成飞新材料股份公司 | Flexible blade root baffle structure of wind power blade |
| CN114962134A (en) * | 2022-03-31 | 2022-08-30 | 振石集团华智研究院(浙江)有限公司 | Structural reinforcement for wind power blade and wind power blade |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104564540A (en) * | 2015-01-05 | 2015-04-29 | 吉林重通成飞新材料股份公司 | Glue collecting device for wind power blade |
| CN205478092U (en) * | 2016-01-18 | 2016-08-17 | 广东明阳风电产业集团有限公司 | Formula aerogenerator blade is made up in segmentation |
| CN207538972U (en) * | 2017-10-26 | 2018-06-26 | 中材科技风电叶片股份有限公司 | Wind electricity blade |
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| EP2383465A1 (en) * | 2010-04-27 | 2011-11-02 | Lm Glasfiber A/S | Wind turbine blade provided with a slat assembly |
| EP2484896B1 (en) * | 2011-02-04 | 2014-04-23 | LM WP Patent Holding A/S | Mounting of vortex generator devices on a wind turbine rotorblade by means of mounting plate |
| US8430638B2 (en) * | 2011-12-19 | 2013-04-30 | General Electric Company | Noise reducer for rotor blade in wind turbine |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104564540A (en) * | 2015-01-05 | 2015-04-29 | 吉林重通成飞新材料股份公司 | Glue collecting device for wind power blade |
| CN205478092U (en) * | 2016-01-18 | 2016-08-17 | 广东明阳风电产业集团有限公司 | Formula aerogenerator blade is made up in segmentation |
| CN207538972U (en) * | 2017-10-26 | 2018-06-26 | 中材科技风电叶片股份有限公司 | Wind electricity blade |
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