CN113021677B - Pultruded main beam, blade and manufacturing method of blade - Google Patents
Pultruded main beam, blade and manufacturing method of blade Download PDFInfo
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- CN113021677B CN113021677B CN202110231465.8A CN202110231465A CN113021677B CN 113021677 B CN113021677 B CN 113021677B CN 202110231465 A CN202110231465 A CN 202110231465A CN 113021677 B CN113021677 B CN 113021677B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B11/00—Making preforms
- B29B11/04—Making preforms by assembling preformed material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C39/00—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
- B29C39/02—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor for making articles of definite length, i.e. discrete articles
- B29C39/10—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor for making articles of definite length, i.e. discrete articles incorporating preformed parts or layers, e.g. casting around inserts or for coating articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/001—Profiled members, e.g. beams, sections
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/08—Blades for rotors, stators, fans, turbines or the like, e.g. screw propellers
- B29L2031/082—Blades, e.g. for helicopters
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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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Abstract
The invention provides a pultrusion girder, a blade and a manufacturing method of the blade, wherein the pultrusion girder comprises a core material block and a plurality of pultrusion plate layers which are stacked in a multi-layer mode, each pultrusion plate layer comprises a plurality of pultrusion plates, the core material block is respectively arranged on two opposite sides of each multi-layer pultrusion plate layer, a plurality of limiting steps are arranged on one side, opposite to the pultrusion plates, of each core material block, and the limiting steps and the pultrusion plate layers are correspondingly positioned and matched one by one. According to the invention, the core blocks and the multiple layers of the stacked pultrusion plate layers are arranged, each layer of pultrusion plate layer comprises the multiple pultrusion plates, the core blocks are respectively arranged on two opposite sides of the multiple layers of pultrusion plate layers, the multiple layers of limiting steps are arranged on one side, opposite to the pultrusion plates, of the core blocks, the multiple layers of limiting steps are correspondingly positioned and adapted with the multiple layers of pultrusion plate layers one by one, the limiting of the core blocks on the pultrusion plates is realized, the pultrusion plates are prevented from laterally moving, meanwhile, the stacking of the pultrusion plates is easy to realize, the positioning is accurate, and the integral mechanical property of the pultrusion girder is improved.
Description
Technical Field
The invention relates to the technical field of wind power blade manufacturing, in particular to a pultruded main beam, a blade and a manufacturing method of the blade.
Background
The wind power blade is a main component of wind power generation, and consists of an upper shell, a lower shell, a main beam and a web plate, wherein the main beam is used as a force bearing component. Along with the continuous increase of the length of the blade, the load born by the main beam is larger and larger, and new requirements are put forward on the material of the main beam. As a novel material used for the blade, the pultruded plate has better performance than a pouring process, can achieve higher mechanical property, and meets the requirement of increasing the rigidity of the blade.
Generally, the pultruded panels need to be stacked, and when the stack is placed in a shell mold, the positioning is not accurate enough, and the stack is not laid stably enough. The pultrusion plate is flatly laid on the shell mold, the control precision of the pultrusion plate of the flatly laid structure is high, the control precision is not easy to realize, the stacked structure is not stable enough, the side of the pultrusion plate is easy to move, the pultrusion plate is stacked in the thickness direction without positioning, the pultrusion plate can only be stacked by means of the flatly laid mode, and the gap between the pultrusion plate layers is easy to generate, so that the resin is rich.
Disclosure of Invention
The invention provides a pultruded girder, a blade and a manufacturing method of the blade, which are used for solving the defects that the stacking of the pultruded girder in the prior art is easy to laterally move and inaccurate in positioning, realizing the stable stacking of the pultruded girder, realizing the accurate positioning and ensuring the structural strength of the pultruded girder.
The invention provides a pultrusion girder which comprises a core material block and a plurality of layers of pultrusion plate layers which are stacked, wherein each layer of pultrusion plate layer comprises a plurality of pultrusion plates, the core material block is respectively arranged on two opposite sides of the plurality of layers of pultrusion plate layers, a plurality of layers of limiting steps are arranged on one side of the core material block opposite to the pultrusion plates, and the plurality of layers of limiting steps and the plurality of layers of pultrusion plate layers are correspondingly positioned and matched one by one.
According to the pultrusion girder provided by the invention, the pultrusion plates of two adjacent pultrusion plate layers are staggered and stacked.
According to the pultrusion girder provided by the invention, round chamfers are arranged at the side edge positions of the pultrusion plate along the length direction of the pultrusion plate.
According to the pultrusion main beam provided by the invention, the width of the limiting step is half of the width of the pultrusion plate, and the height of the limiting step is the same as the thickness of the corresponding pultrusion plate layer.
According to the pultrusion main beam provided by the invention, the number difference of the pultrusion plates of two adjacent pultrusion plate layers is one.
The pultrusion girder comprises a first group of pultrusion plates and a second group of pultrusion plates which are stacked, wherein the first group of pultrusion plates comprise pultrusion plate layers which are stacked in a multi-layer mode, the width of the plurality of pultrusion plate layers of the first group of pultrusion plates is sequentially increased along the vertical direction, and the width of the plurality of pultrusion plate layers of the second group of pultrusion plates is sequentially decreased along the vertical direction.
According to the pultrusion main beam provided by the invention, the width of the pultrusion plate layer at the uppermost layer of the first group of pultrusion plates is the same as the width of the pultrusion plate layer at the lowermost layer of the second group of pultrusion plates.
According to the pultrusion main beam provided by the invention, the length of the pultrusion plate is the same as that of the core material block.
The invention also provides a blade comprising a shell and the pultruded girder as described in any of the above, the pultruded girder being provided within the shell.
The invention also provides a manufacturing method of the blade, which comprises the following steps:
placing the two core blocks at a set interval, and sequentially laying the pultrusion plates between the limiting steps corresponding to the two core blocks to form a plurality of pultrusion plate layers to manufacture the pultrusion girder;
binding the pultrusion girder by using a binding piece, and assembling the pultrusion girder in the shell or in a girder mold;
integrally pouring the pultrusion main beam, the shell glass fiber and the core material in the shell; or placing the pultruded main beam in the main beam mould for prefabrication, then placing the pultruded main beam in the shell after prefabrication, and filling the pultruded main beam, the shell glass fiber and the core material in the shell together to prepare the blade.
According to the pultruded girder, the blade and the manufacturing method of the blade, the core blocks and the plurality of layers of the pultruded plate which are stacked are arranged, each layer of the pultruded plate comprises the plurality of pultruded plates, the core blocks are respectively arranged on two opposite sides of the plurality of layers of the pultruded plate, the plurality of limiting steps are arranged on one side, opposite to the pultruded plates, of the core blocks, the plurality of layers of the limiting steps are correspondingly positioned and matched with the plurality of layers of the pultruded plates one by one, so that the limiting of the core blocks to the pultruded plates is realized, the pultruded plates are prevented from lateral shifting, meanwhile, the stacking of the pultruded plates is easy to realize, the positioning is accurate, and the integral mechanical property of the pultruded girder is improved.
Drawings
In order to more clearly illustrate the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a cross-sectional view of a first embodiment of a pultruded girder according to the present disclosure;
FIG. 2 is a schematic structural view of a pultruded slab in a first embodiment of a pultruded girder according to the present disclosure;
FIG. 3 is a cross-sectional view of a second embodiment of a pultruded girder according to the present disclosure;
reference numerals are as follows:
100: a core material block; 110: a limiting step; 200: pultrusion of the slab layer;
210: and (5) extruding the board.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.
The pultrusion girder of the present invention is described below with reference to fig. 1 to 3, and includes a core block 100 and a plurality of layers of pultrusion plate layers 200 stacked together, each layer of pultrusion plate layer 200 includes a plurality of pultrusion plates 210, the core block 100 is respectively disposed on two opposite sides of the plurality of layers of pultrusion plate layers 200, a plurality of layers of limiting steps 110 are disposed on one side of the core block 100 opposite to the pultrusion plates 210, and the plurality of layers of limiting steps 110 are positioned and adapted to the plurality of layers of pultrusion plate layers 200 in a one-to-one correspondence manner. It can be understood that the core blocks 100 are respectively arranged on two opposite sides of the multi-layer pultruded slab layer 200, namely, two chordwise sides of the pultruded slab layer 200, so that the stacked pultruded slab layer 200 is positioned between the two core blocks 100, and the pultruded slab layer 200 is prevented from lateral movement. Each layer of pultruded sheet layer 200 includes at least three pultruded sheets 210 laid flat, and the plurality of layers of pultruded sheet layers 200 are stacked in the vertical direction. The core material blocks 100 are provided with a plurality of layers of limiting steps 110, the number of the limiting steps 110 is the same as the number of layers of the pultrusion plate layers 200, and the positioning adaptation is in one-to-one correspondence, that is, one layer of pultrusion plate layer 200 is positioned between the limiting steps 110 corresponding to the two core material blocks 100, two sides of the pultrusion plate layer 200 on the upper side of the layer of pultrusion plate layer 200 are butted on the limiting steps 110, the limiting steps 110 on the upper side of the limiting steps 110 are positioned, the analogy is carried out in sequence, the positioning of each layer of pultrusion plate layer 200 between the corresponding limiting steps 110 is realized, and the side shift of each layer of pultrusion plate 210 is prevented.
It should be noted that the total thickness of the multiple layers of pultruded plies 200 is the same as the height of the core block 100, thereby avoiding the generation of gaps between the pultruded plies 200, and specifically, the overall thickness of the pultruded plies 200 may be specifically set according to the actually required thickness of the pultruded girder.
According to the pultrusion girder provided by the invention, the pultrusion plates 210 of two adjacent pultrusion plate layers 200 are staggered and stacked. It can be understood that, there is the gap between the pultrusion plate 210 of every layer of pultrusion plate layer 200, and the gap of adjacent two-layer pultrusion plate layer 200 is crisscross to be set up, and convenient the filling man-hour, resin can evenly distributed in the upper and lower surface of pultrusion plate 210 on every layer, guarantees to fill the effect, improves structural strength.
According to the pultrusion girder provided by the invention, along the length direction of the pultrusion plate 210, the positions of the side edges of the pultrusion plate 210 are provided with round chamfers. It is understood that in order to improve the fluidity of the resin at the end side of the pultruded ply 200 at the time of infusion, rounded chamfers are provided at the positions of the side ridges of the pultruded ply 210 in the longitudinal direction of the pultruded ply 210, that is, the rounded chamfers are located at the positions of the four corners of the cross-section of the pultruded ply 210.
According to the pultruded girder provided by the present invention, the width of the limiting step 110 is half of the width of the pultruded slab 210, and the height of the limiting step 110 is the same as the thickness of the corresponding pultruded slab 200. It can be understood that the width of the limiting step 110 is half of the width of the pultruded panel 210, and the height of the limiting step 110 is the same as the thickness of the pultruded panel layer 200 of the corresponding layer, so that the limiting butt joint of the core material block 100 and the pultruded panel 210 is realized, the stacking stability of the pultruded panel layer 200 is ensured, and the side shift of the pultruded panel layer 200 is prevented. It should be noted that the sizes of the pultruded panels 210 of each layer of pultruded panel layer 200 are the same, and the sizes of the limiting steps 110 of each layer are also the same.
In one embodiment of a pultruded main beam, as shown in fig. 1 and 2, the number of pultruded panels 210 of two adjacent pultruded plies 200 differs by one. It is understood that in the first embodiment, four layers of pultruded plies 200 are provided, and four layers of limiting steps 110 are provided for the core block 100. The first layer (from bottom to top along the vertical direction) of the pultrusion board layer 200 is tiled with three pultrusion boards 210 which are positioned between the limiting steps 110 of the first layer (from bottom to top along the vertical direction) of the two core blocks 100;
a second layer of pultruded slab layer 200 is stacked on the upper side of the first layer of pultruded slab layer 200, four pultruded slabs 210 are flatly laid, half of the pultruded slabs 210 on the two sides of the second layer of pultruded slab layer 200 are lapped on the first layer of limiting step 110, and the other half of the pultruded slabs are arranged on the upper side of the first layer of pultruded slab layer 200, so that a gap between the pultruded slabs 210 of the second layer is positioned in the middle of the pultruded slabs 210 of the first layer;
a third layer of pultruded slab layer 200 is stacked on the upper side of the second layer of pultruded slab layer 200, five pultruded slabs 210 are flatly laid, half of the pultruded slabs 210 on two sides of the third layer of pultruded slab layer 200 are lapped on the second layer of limiting step 110, and the other half of the pultruded slabs 210 are arranged on the upper side of the second layer of pultruded slab layer 200, so that the gap between the pultruded slabs 210 of the third layer is positioned in the middle of the pultruded slabs 210 of the second layer, and the gap part between the pultruded slabs 210 of the third layer is collinear with the gap between the pultruded slabs 210 of the first layer;
the fourth layer pultrusion plate layer 200 is stacked on the upper side of the third layer pultrusion plate layer 200, the tiling is provided with six pultrusion plates 210, half of the pultrusion plates 210 on the two sides of the fourth layer pultrusion plate layer 200 are lapped on the limit step 110 on the third layer, the other half of the pultrusion plates are arranged on the upper side of the third layer pultrusion plate layer 200, so that the gap between the pultrusion plates 210 on the fourth layer is positioned at the middle position of the third layer pultrusion plates 210, the gap between the pultrusion plates 210 on the fourth layer and the gap between the pultrusion plates 210 on the second layer are collinear, and the upper end surface of the core block 100 is coplanar with the upper surface of the fourth layer pultrusion plate layer 200.
In the first embodiment, only the pultrusion girder provided with four pultrusion plate layers 200 is explained, and the specific number of the layers can be specifically set according to the size of the actual required pultrusion girder.
As shown in fig. 3, a second embodiment of the pultruded girder according to the present invention includes a first group of pultruded panels and a second group of pultruded panels stacked together, where the first group of pultruded panels includes pultruded panel layers 200 stacked in multiple layers, the widths of the multiple pultruded panel layers 200 of the first group of pultruded panels sequentially increase along the vertical direction, and the widths of the multiple pultruded panel layers 200 of the second group of pultruded panels sequentially decrease along the vertical direction. It will be appreciated that the second embodiment is comprised of the pultruded girders of the first two embodiments. The first group of pultruded panels are arranged on the bottom side, and the second group of pultruded panels are arranged on the upper side of the first group of pultruded panels and are vertically symmetrical about the interface. That is, the pultruded girder provided in example two is composed of the pultruded girder of example one and the pultruded girder of example one inverted. The cross-section of the multi-layer pultruded plies 200 in the first embodiment is trapezoidal-like, and the cross-section of the multi-layer pultruded plies 200 in the second embodiment is hexagonal-like.
According to the pultrusion girder provided by the invention, the width of the uppermost pultrusion plate layer 200 of the first group of pultrusion plates is the same as the width of the lowermost pultrusion plate layer 200 of the second group of pultrusion plates. It can be understood that four core material blocks 100 are provided, two of the four core material blocks are respectively located at two sides of the first group of pultruded panels, the other two core material blocks are respectively located at two sides of the second group of pultruded panels after being inverted, and the side surfaces of the two core material blocks 100 located at the same side are flush, that is, the cross section of the pultrusion girder provided in the second embodiment is a regular quadrangle.
According to the pultruded girder provided by the present invention, the length of the pultruded panels 210 is the same as the length of the core blocks 100. It is understood that the core material block 100 is disposed along the length direction of the pultruded panel 210, and the length of the core material block 100 is the same as that of the pultruded panel 210 in order to ensure the position limiting effect. It should be noted that the length of the core block 100 may also be set slightly less than the length of the pultruded panel 210.
The invention also provides a blade comprising a shell and the pultrusion girder as any one of the above, wherein the pultrusion girder is arranged in the shell. It can be understood that the core material and the glass fibers are arranged in the shell, the pultrusion main beam is placed in the shell, and the blade is integrally poured to ensure the overall structural strength of the blade. Or placing the pultrusion main beam in a main beam mould for prefabrication, and then pouring the main beam together with the shell glass fiber and the core material in the shell to obtain the blade.
The invention also provides a manufacturing method of the blade, which comprises the following steps:
placing two core blocks 100 according to a set distance, and sequentially laying pultrusion plates 210 between the limiting steps 110 corresponding to the two core blocks 100 to form a plurality of pultrusion plate layers 200 to obtain a pultrusion girder;
binding the pultruded main beam by a binding piece, and assembling the pultruded main beam in the shell or the main beam mold;
integrally filling the pultrusion main beam, the shell glass fiber and the core material in the shell to obtain the blade; or placing the pultrusion main beam in the main beam mold for prefabrication, placing the prefabricated pultrusion main beam in the shell, and filling the prefabricated pultrusion main beam, the shell glass fiber and the core material in the shell together to obtain the blade.
The invention provides a manufacturing method of a blade, which specifically comprises the following steps:
placing the two core blocks 100 according to a set interval, ensuring that the interval between the limiting steps 110 of the lowest layers of the two core blocks 100 is the same as the width of the pultrusion plate layer 200 of the lowest layer, namely measuring the width of each pultrusion plate 210, determining the number of the pultrusion plate layers 200 of the lowest layer which need to be tiled to form the pultrusion plates 210, and further obtaining the actual distance of the set interval;
n (3 in this embodiment) pultruded panels 210 of the first pultruded panel layer 200 are laid between the first layer of limiting steps 110 of the two core blocks 100, and the vertical sides of the limiting steps 110 are butted with the vertical sides of the pultruded panels 210 to realize positioning;
n +1 (4 in the embodiment) pultrusion plates 210 of the second layer of pultrusion plate layer 200 are flatly laid on the upper side of the first pultrusion plate layer 200, half of the pultrusion plates 210 positioned on two sides of the second layer of pultrusion plate layer 200 are positioned on the upper side of the first layer of limiting step 110, the other half of the pultrusion plates are positioned on the upper side of the first layer of pultrusion plate layer 200, the vertical side of the second layer of limiting step 110 is butted with the vertical side of the pultrusion plates 210 positioned on two sides of the second layer of pultrusion plate layer 200, and the positioning of the second layer of pultrusion plate layer 200 is realized;
by analogy, the third pultruded slab layer 200 is flatly laid on the supporting surface formed by the upper surfaces of the second pultruded slab layer 200 and the second limiting step 110, and the fourth pultruded slab layer 200 is flatly laid on the supporting surface formed by the upper surfaces of the third pultruded slab layer 200 and the third limiting step 110, so that the preparation of the pultruded girder in the first embodiment is completed; (preparing the second pultruded girder in the embodiment, then according to the preparation method of the first pultruded girder in the embodiment, placing one core block 100 on the upper sides of two core blocks 100, laying a fourth pultruded slab 200 on the supporting surface formed by the upper surfaces of the fourth pultruded slab 200 and the fourth limiting step 110, laying a third pultruded slab 200 between the fourth limiting step 110 of the two core blocks 100 placed behind the fourth pultruded slab 200 laid behind, laying a third pultruded slab 200 on the upper side of the fourth pultruded slab 200 laid behind and the third limiting step 110, and finishing the laying of the second pultruded slab 200 and the first pultruded slab 200 in sequence) to ensure that the two adjacent pultruded slabs 200 are staggered;
binding the prepared pultrusion girder by adopting a binding band, a binding belt or other materials to form a fixed whole;
hoisting the bundled pultrusion main beam into the shell, hoisting by adopting a tray, a tool and a travelling crane, and pouring resin into the shell to integrate the pultrusion main beam with the glass fiber and the core material in the shell to complete the preparation of the blade; alternatively, the first and second electrodes may be,
and hoisting the bundled pultruded main beam into a main beam mold, filling resin into the main beam mold to complete the prefabrication of the pultruded main beam, hoisting the prefabricated pultruded main beam into the shell, and filling the pultruded main beam, the shell glass fiber and the core material in the shell together to prepare the blade.
According to the pultruded girder, the blade and the manufacturing method of the blade, the core blocks and the plurality of layers of the pultruded plate which are stacked are arranged, each layer of the pultruded plate comprises the plurality of pultruded plates, the core blocks are respectively arranged on two opposite sides of the plurality of layers of the pultruded plate, the plurality of limiting steps are arranged on one side, opposite to the pultruded plates, of the core blocks, the plurality of limiting steps are correspondingly positioned and matched with the plurality of layers of the pultruded plate one by one, the limiting of the core blocks to the pultruded plates is realized, the pultruded plates are prevented from lateral displacement, meanwhile, the stacking of the pultruded plates is easy to realize, the positioning is accurate, and the integral mechanical property of the girder is improved.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (8)
1. The pultrusion girder is characterized by comprising a core block and a plurality of layers of pultrusion plates which are stacked, wherein each layer of pultrusion plate comprises a plurality of pultrusion plates, the core block is arranged on each of two opposite sides of each layer of pultrusion plate, a plurality of layers of limiting steps are arranged on one side of each core block, which is opposite to each pultrusion plate, and the limiting steps and the pultrusion plates are correspondingly positioned and matched one by one;
the specifications and the sizes of the pultrusion plates of each layer of pultrusion plate layer are the same and consistent, the specifications and the sizes of the limiting steps of each layer of pultrusion plate layer are the same and consistent, the width of each limiting step is half of the width of the pultrusion plate, and the height of each limiting step is the same as the thickness of the corresponding pultrusion plate layer; the number difference of the pultrusion plates of the two adjacent layers of pultrusion plate layers is one.
2. The pultruded girder of claim 1, wherein the pultruded panels of two adjacent layers of the pultruded plies are staggered stacked.
3. The pultruded girder according to claim 1, wherein rounded corners are provided at the side edges of the pultruded panels along the length of the pultruded panels.
4. The pultruded girder according to claim 1, comprising a first group of pultruded panels and a second group of pultruded panels stacked together, wherein the first group of pultruded panels comprises a plurality of layers stacked on the pultruded plate layer, wherein the width of the pultruded plate layer of the first group of pultruded panels is sequentially increased along the vertical direction, and the width of the pultruded plate layer of the second group of pultruded panels is sequentially decreased along the vertical direction.
5. The pultruded girder of claim 4, wherein the width of the pultruded slab of the uppermost layer of the first set of pultruded panels is the same as the width of the pultruded slab of the lowermost layer of the second set of pultruded panels.
6. The pultruded girder according to any of claims 1 to 5, wherein the length of the pultruded slab is the same as the length of the core block.
7. A blade comprising a shell and a pultruded main beam according to any of claims 1 to 6, said pultruded main beam being provided within said shell.
8. A method of manufacturing a blade according to claim 7, comprising the steps of:
placing the two core blocks at a set interval, and sequentially laying the pultrusion plates between the limiting steps corresponding to the two core blocks to form a plurality of pultrusion plate layers to manufacture the pultrusion girder;
binding the pultrusion girder by using a binding piece, and assembling the pultrusion girder in the shell or in a girder mold;
integrally filling the pultrusion main beam with a shell glass fiber and a core material in the shell; or placing the pultruded main beam in the main beam mould for prefabrication, then placing the pultruded main beam in the shell after prefabrication, and filling the pultruded main beam, the shell glass fiber and the core material in the shell together to prepare the blade.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110231465.8A CN113021677B (en) | 2021-03-02 | 2021-03-02 | Pultruded main beam, blade and manufacturing method of blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110231465.8A CN113021677B (en) | 2021-03-02 | 2021-03-02 | Pultruded main beam, blade and manufacturing method of blade |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113021677A CN113021677A (en) | 2021-06-25 |
| CN113021677B true CN113021677B (en) | 2022-11-01 |
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