CN116292072A - Interlayer fabric, blade bearing structure, manufacturing method of interlayer fabric and blade bearing structure and wind driven generator blade - Google Patents

Interlayer fabric, blade bearing structure, manufacturing method of interlayer fabric and blade bearing structure and wind driven generator blade Download PDF

Info

Publication number
CN116292072A
CN116292072A CN202310303845.7A CN202310303845A CN116292072A CN 116292072 A CN116292072 A CN 116292072A CN 202310303845 A CN202310303845 A CN 202310303845A CN 116292072 A CN116292072 A CN 116292072A
Authority
CN
China
Prior art keywords
fabric
plates
blade
interlayer fabric
interlayer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202310303845.7A
Other languages
Chinese (zh)
Inventor
王国军
张振聪
张振国
文欢
路绪恒
白宏伟
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shanghai Electric Wind Power Group Co Ltd
Original Assignee
Shanghai Electric Wind Power Group Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shanghai Electric Wind Power Group Co Ltd filed Critical Shanghai Electric Wind Power Group Co Ltd
Priority to CN202310303845.7A priority Critical patent/CN116292072A/en
Publication of CN116292072A publication Critical patent/CN116292072A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/04—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres having existing or potential cohesive properties, e.g. natural fibres, prestretched or fibrillated artificial fibres
    • D04H1/08—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres having existing or potential cohesive properties, e.g. natural fibres, prestretched or fibrillated artificial fibres and hardened by felting; Felts or felted products
    • 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
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28—Shaping operations therefor
    • B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
    • B29C70/34—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation
    • 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
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28—Shaping operations therefor
    • B29C70/54—Component parts, details or accessories; Auxiliary operations, e.g. feeding or storage of prepregs or SMC after impregnation or during ageing
    • 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
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28—Shaping operations therefor
    • B29C70/54—Component parts, details or accessories; Auxiliary operations, e.g. feeding or storage of prepregs or SMC after impregnation or during ageing
    • B29C70/56—Tensioning reinforcements before or during shaping
    • 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
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/68—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks
    • B29C70/681—Component parts, details or accessories; Auxiliary operations
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04C—BRAIDING OR MANUFACTURE OF LACE, INCLUDING BOBBIN-NET OR CARBONISED LACE; BRAIDING MACHINES; BRAID; LACE
    • D04C1/00—Braid or lace, e.g. pillow-lace; Processes for the manufacture thereof
    • D04C1/02—Braid or lace, e.g. pillow-lace; Processes for the manufacture thereof made from particular materials
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Composite Materials (AREA)
  • Textile Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Wind Motors (AREA)

Abstract

The invention discloses an interlayer fabric, a blade bearing structure, a manufacturing method of the interlayer fabric and a wind driven generator blade. The main fiber layer of the interlayer fabric adopts straight fibers without twisting, so that gaps in fiber bundles are straight and uniform, and therefore, when resin is poured, the flow velocity in the fiber bundles is basically consistent with the flow velocity among the fiber bundles under the capillary action, and the pouring defect caused by asynchronous resin flow velocity in the fiber bundles and among the fiber bundles can be solved.

Description

Interlayer fabric, blade bearing structure, manufacturing method of interlayer fabric and blade bearing structure and wind driven generator blade
Technical Field
The invention relates to the field of wind driven generators, in particular to an interlayer fabric, a blade bearing structure, a manufacturing method of the interlayer fabric and the blade bearing structure, and a wind driven generator blade.
Background
The blade bearing structure is used as a main bearing structure of the wind power generator blade and comprises a fiber reinforced resin composite material plate (hereinafter referred to as plate) and an interlayer fabric, wherein the interlayer fabric is clamped between the two plates, and resin is poured into the interlayer fabric and a gap between the interlayer fabric and the plates so as to fix the two plates.
The material of interlayer fabric commonly used in the industry is twisted fabric, the fibers are twisted and bound together relatively, gaps in the fiber bundles are tightly combined and bent, the resin permeability is small in the pouring process, and the resin flowing speeds in the fiber bundles and among the fibers are asynchronous, so that pouring defects are formed.
Disclosure of Invention
The invention aims to overcome the defect that resin flow speeds in fiber bundles of an interlayer fabric made of twisted fabrics and among the fiber bundles are asynchronous in the prior art, and provides an interlayer fabric, a blade bearing structure, a manufacturing method thereof and a wind driven generator blade.
The invention solves the technical problems by the following technical scheme:
an interlayer fabric is used for a blade bearing structure of a wind driven generator blade, the interlayer fabric is an interlayer between two plates, the interlayer fabric comprises a main fiber layer, and the main fiber layer is composed of untwisted straight fibers.
In the scheme, the straight fibers which are not twisted are adopted, so that gaps in the fiber bundles are straight and uniform, the flow velocity of the fibers in the fiber bundles is basically consistent with the flow velocity of the fibers among the fiber bundles under the capillary action when the resin is poured, and the pouring defect caused by the asynchronous resin flow velocity in the fiber bundles and among the fiber bundles can be solved.
Preferably, the main fiber layer includes a first fiber extending axially along a first direction and a second fiber extending axially along a second direction, wherein an included angle is formed between the first direction and the second direction, and the first fiber and the second fiber are arranged in a crossing manner.
In this scheme, above-mentioned setting makes the main body fibrous layer be biax axial fabric, adopts such structure can make the even whole surface diffusion along the main body fibrous layer of resin of pouring, improves the degree of consistency of pouring.
Preferably, the interlayer fabric further comprises felt layers arranged on two side surfaces of the main body fiber layer in the thickness direction.
In this scheme, when the interlayer fabric is only a sheet-shaped fiber woven fabric, the interlayer fabric is compressed into a sheet due to a tight weaving manner and a vacuum pressure during a filling process, and it is difficult to introduce a resin fluid into a gap between a plate and the interlayer fabric by capillary action, thereby causing a filling defect of the interlayer fabric, resulting in a decrease in mechanical properties. When the felt layers are arranged on the two side surfaces of the main fiber layer, the felt layer part can be combined with the resin fluid introduced by the felt layer part to form the fiber reinforced resin material, and the material has excellent interface combination property, is beneficial to improving the structural strength of the blade bearing structure and enhancing the stability.
Preferably, the felt layer is made of surface felt.
In this embodiment, a specific material for the felt layer is provided.
The utility model provides a blade load-carrying structure, blade load-carrying structure includes the multilayer is followed the thickness direction of panel is arranged in proper order panel layer and as above interlaminar fabric, arbitrary panel layer includes a plurality of level is arranged panel, interlaminar fabric presss from both sides to be located between two adjacent in the thickness direction of panel.
In the scheme, the blade bearing structure is used as a main bearing structure of the wind power generator blade and is used for guaranteeing the structural strength of the wind power generator blade and improving the stability of the wind power generator blade in the use process.
Preferably, the blade load-carrying structure further comprises a resin impregnated between two adjacent plates in a thickness direction of the plates, the resin being capable of filling an inner gap of the interlayer fabric and a gap between the plates and the interlayer fabric.
In this scheme, the resin is used for realizing the connection between a plurality of planks, guarantees the structural strength of blade load-carrying structure.
Preferably, the end face of the plate facing the interlayer fabric is provided with a concave accommodating cavity, and the resin is filled in the accommodating cavity and wraps the felt layer of the interlayer fabric.
In this scheme, hold the chamber and be used for providing accommodation space for the resin of follow-up pouring, guarantee to pour sufficient resin between panel and the interlaminar fabric, improve the fastness of connection.
Preferably, the interlayer fabric is of an integral structure, and one interlayer fabric is clamped between two adjacent plate layers;
or, any one of the plate layers comprises a plurality of plates, the interlayer fabric comprises a plurality of mutually independent interlayer fabric units, and one interlayer fabric unit is clamped between two adjacent plates in the thickness direction of the plates.
In this scheme, the double-layered fabric of intermediate layer is inserted between two adjacent sheet material layers, can improve the efficiency of laying, practices thrift the man-hour of equipment. An interlayer fabric unit is clamped between the two plates, so that material consumption of interlayer fabrics can be reduced, and cost is saved.
A method of manufacturing a blade load carrying structure for manufacturing a blade load carrying structure as described above, the method of manufacturing a blade load carrying structure comprising the steps of:
step S1, sandwiching the interlayer fabric between two adjacent plates in the thickness direction of the plates;
s2, vacuumizing the accommodating cavity of the plate;
and S3, filling resin into the main body fiber layer of the interlayer fabric, and filling the resin into the accommodating cavity and wrapping the felt layer of the interlayer fabric under vacuum negative pressure and capillary action of the main body fiber layer.
In the scheme, the blade bearing structure manufactured by the method can form a fiber reinforced resin material between two layers of plates, and the material can give consideration to self strength and bonding compactness of an interface, so that the overall strength of the blade bearing structure is improved. Meanwhile, due to the adoption of the straight fibers, the resin can flow in the fiber bundles and among the fiber bundles at a basically uniform speed through capillary action, so that the problem of uneven pouring caused by uneven resin flow speed is not easy to occur.
A wind turbine blade comprising an interlaminar fabric as described above; or the wind power generator blade comprises the blade bearing structure.
In the scheme, the wind driven generator blade adopting the interlayer fabric or blade bearing structure has the advantages of high strength, long service life and reliable and stable use.
The invention has the positive progress effects that: the main fiber layer of the interlayer fabric adopts straight fibers without twisting, so that gaps in fiber bundles are straight and uniform, and therefore, when resin is poured, the flow velocity in the fiber bundles is basically consistent with the flow velocity among the fiber bundles under the capillary action, and the pouring defect caused by asynchronous resin flow velocity in the fiber bundles and among the fiber bundles can be solved.
Drawings
Fig. 1 is a schematic structural view of an interlaminar fabric according to an embodiment of the invention.
Fig. 2 is a schematic diagram of an interlayer fabric sandwiched between two plates according to an embodiment of the present invention.
Fig. 3 is an enlarged view of the right half of fig. 2.
Fig. 4 is a schematic structural view of a blade bearing structure according to an embodiment of the present invention.
FIG. 5 is a flow chart illustrating a method of fabricating a blade bearing structure according to an embodiment of the invention.
Reference numerals illustrate:
interlaminar fabric 1
Body fiber layer 11
Felt layer 12
Plate 2
Accommodation chamber 21
Resin 3
Detailed Description
The invention is further illustrated by means of the following examples, which are not intended to limit the scope of the invention.
As shown in fig. 1 to 4, the present embodiment provides a blade bearing structure, which is used as a main bearing structure of a wind turbine blade, so as to ensure structural strength of the wind turbine blade and improve stability of the wind turbine blade in use.
As shown in fig. 1 to 4, the blade load bearing structure includes a plurality of plate layers, an interlayer fabric 1, and a resin 3.
As shown in fig. 4, the plurality of plate layers are sequentially arranged along the thickness direction of the plate 2, and any plate layer includes a plurality of plate materials 2 that are horizontally arranged, and it should be noted that, in this embodiment, the horizontal arrangement refers to a state in which the plurality of plate materials 2 of the same plate layer are horizontally arranged in the interface shown in fig. 4, and does not mean that the plurality of plate materials 2 of the same plate layer are horizontally arranged when the wind turbine blade is in a normal use state.
In other alternative embodiments, the number of sheets 2 in a sheet layer may also be one.
As shown in fig. 2-4, the plates 2 in different plate layers are arranged in one-to-one correspondence in the thickness direction of the plates 2, the interlayer fabric 1 is sandwiched between two adjacent plates 2 in the thickness direction of the plates 2, that is, the interlayer fabric 1 is an interlayer between two plates 2, and the interlayer fabric 1 can solve the impact or the stress through the deformation of the interlayer fabric 1 when the blade bearing structure is impacted or stressed, so that the flexibility and the bending resistance of the blade bearing structure are improved. Thereby improving the usability of the blade bearing structure when used as the main bearing structure of the wind driven generator blade.
As shown in fig. 2-4, the end surface of the plate 2 facing the interlayer fabric 1 is provided with a concave accommodating cavity 21, and the accommodating cavity 21 is used for providing an accommodating space for the resin 3 which is subsequently poured, so that the sufficient resin 3 is poured between the plate 2 and the interlayer fabric 1, and the connection firmness is improved.
As shown in fig. 1, the interlaminar fabric 1 comprises a main fiber layer 11, and the main fiber layer 11 is composed of straight fibers which are not twisted, so that gaps in fiber bundles can be straight and uniform, and therefore when resin 3 is infused, flow velocity in the fiber bundles and flow velocity among the fiber bundles under capillary action are basically consistent, and infusion defects caused by asynchronous flow velocity of the resin 3 in the fiber bundles and among the fiber bundles can be solved.
Further, the body fiber layer 11 is a biaxial braid, and the body fiber layer 11 includes first fibers extending axially along a first direction and second fibers extending axially along a second direction, an included angle is formed between the first direction and the second direction, and the first fibers and the second fibers are disposed in a crossing manner. The present embodiment adopts the biaxial braid as the main fiber layer 11, so that the infused resin 3 can be uniformly diffused along the whole surface of the main fiber layer 11, and the infusion uniformity is improved.
It should be noted that the biaxial braid is a braided structure already existing in the prior art, and how the first fiber and the second fiber are braided to form the biaxial braid is not specifically discussed here.
When the interlayer fabric 1 is only a sheet-shaped woven fabric of fibers, the interlayer fabric 1 is compressed into a sheet due to a tight weaving manner and a vacuum pressure during a filling process, it is difficult to introduce a resin 3 fluid into a gap between the plate 2 and the interlayer fabric 1 by capillary action, thereby causing a filling defect of the interlayer fabric 1, resulting in a decrease in mechanical properties.
To solve this problem, in the present embodiment, the interlayer fabric 1 further includes felt layers 12, specifically, a surface felt, provided on both sides in the thickness direction of the body fiber layer 11. Compared with the main fiber layer 11, the surface felt is fluffy and sparse, and the resin 3 can flow into the accommodating cavity 21 of the plate 2 under the capillary action of the glass fibers of the surface felt, so that the accommodating cavity 21 is filled with the resin 3, and interlayer filling defects are not easy to form. In addition, the surface felt can be in fluid combination with the resin 3 introduced by the surface felt to form a fiber reinforced resin 3 material, and the material has excellent interface combination property, thereby being beneficial to improving the structural strength of the bearing structure of the blade and enhancing the stability.
The accommodating cavity 21 is arranged on the plate 2, so that the plate 2 can be prevented from being pressed against the felt layer 12, and the felt layer 12 can be kept in a fluffy state. After the resin 3 is poured in the following, the felt hairs distributed in the resin 3 can form a fiber reinforced resin 3 material, and the fiber reinforced resin 3 material has excellent interface bonding performance, structural strength and stability.
In other alternative embodiments, the mat layer 12 may be formed from other materials.
As shown in fig. 2 to 4, the resin 3 is impregnated between two plates 2 adjacent in the thickness direction of the plates 2, and the resin 3 is capable of filling the inner gap of the interlayer fabric 1 and the gap between the plates 2 and the interlayer fabric 1 and wrapping the felt layer 12 of the interlayer fabric 1. The resin 3 is used for realizing connection among a plurality of plates 2 and ensuring the structural strength of the blade bearing structure.
As shown in fig. 4, in this embodiment, the interlayer fabric 1 is of an integral structure, and one interlayer fabric 1 is sandwiched between two adjacent sheet material layers, so that the laying efficiency is improved, and the assembly man-hour is saved. The interlayer fabric 1 adopting the integral structure can ensure the flow continuity of the resin 3 when the resin 3 is infused, so that the infusion of the resin 3 is more uniform.
In other alternative embodiments, the interlayer fabric 1 includes a plurality of interlayer fabric units independent of each other, and one interlayer fabric unit is interposed between two adjacent plates 2 in the thickness direction of the plates 2, thereby reducing material consumption of the interlayer fabric 1 and saving costs.
As shown in fig. 5, the present embodiment further provides a method for manufacturing a blade bearing structure, where the method for manufacturing a blade bearing structure includes the following steps:
step S1, sandwiching an interlayer fabric 1 between two adjacent plates 2 in the thickness direction of the plates 2;
step S2, vacuumizing the accommodating cavity 21 of the board 2; the vacuum pumping can be realized by various schemes, such as placing the whole blade bearing structure in a vacuum chamber, vacuumizing the vacuum chamber, and the like;
step S3, filling the resin 3 into the main fiber layer 11 of the interlayer fabric 1, and filling the resin 3 into the accommodating cavity 21 and wrapping the felt layer 12 of the interlayer fabric 1 under the capillary action of the main fiber layer 11 under the vacuum negative pressure.
Specifically, in step S1, since the interlayer fabric 1 in the present embodiment is of a unitary structure, it is necessary to lay the interlayer fabric 1 on all the plates 2 of one plate layer after the placement of all the plates 2 of that layer is completed. In other alternative embodiments, if the interlayer fabric 1 includes a plurality of interlayer fabric units, the interlayer fabric units may be laid on the corresponding boards 2 after all boards 2 in one board layer are laid; or after finishing the placement of one plate 2, the corresponding interlayer fabric units can be directly paved on the plate 2.
In this embodiment, the blade bearing structure manufactured by the method can form the fiber reinforced resin 3 material between the two plates 2, and the material can give consideration to the self strength and the bonding compactness of the interface, so that the overall strength of the blade bearing structure is improved. Meanwhile, due to the adoption of the straight fibers, the resin 3 can flow in the fiber bundles and among the fiber bundles at a substantially uniform rate through capillary action, and the problem of uneven pouring caused by uneven flow speed of the resin 3 is not easy to occur.
The embodiment also discloses a wind driven generator blade, which comprises the blade bearing structure or only comprises the interlayer fabric 1, and the wind driven generator blade adopting the interlayer fabric 1 or the blade bearing structure has high strength, long service life and reliable and stable use.
While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the principles and spirit of the invention, but such changes and modifications fall within the scope of the invention.

Claims (10)

1. An interlayer fabric for a blade bearing structure of a wind driven generator blade, wherein the interlayer fabric is an interlayer between two plates, and is characterized by comprising a main fiber layer, and the main fiber layer is formed by untwisted straight fibers.
2. The interlaminar fabric of claim 1 wherein said body fiber layer comprises first fibers extending axially in a first direction and second fibers extending axially in a second direction, said first and second directions having an included angle therebetween, said first and second fibers being disposed crosswise.
3. The interlaminar fabric as in claim 1, further comprising a batt layer disposed on each side of said body fiber layer in the thickness direction thereof.
4. An interlaminar fabric as in claim 3 wherein said felt layer is comprised of surface felt.
5. A blade bearing structure, characterized in that the blade bearing structure comprises a plurality of plate layers which are sequentially arranged along the thickness direction of the plates and an interlayer fabric as claimed in any one of claims 1 to 4, wherein any one of the plate layers comprises a plurality of plates which are horizontally arranged, and the interlayer fabric is sandwiched between two adjacent plates in the thickness direction of the plates.
6. The blade bearing structure according to claim 5, further comprising a resin impregnated between two of the plates adjacent in a thickness direction of the plates, the resin being capable of filling an inner gap of the interlayer fabric and a gap between the plates and the interlayer fabric.
7. The blade bearing structure according to claim 6, wherein the end face of the plate facing the interlayer fabric is provided with a concave accommodating cavity, and the resin is filled in the accommodating cavity and wraps the felt layer of the interlayer fabric.
8. The blade load-carrying structure according to claim 5, wherein said interlaminar fabric is of unitary construction, one of said interlaminar fabrics being sandwiched between two adjacent said sheet material layers;
or, any one of the plate layers comprises a plurality of plates, the interlayer fabric comprises a plurality of mutually independent interlayer fabric units, and one interlayer fabric unit is clamped between two adjacent plates in the thickness direction of the plates.
9. A method of manufacturing a blade load carrying structure, wherein the method of manufacturing a blade load carrying structure is used to manufacture a blade load carrying structure as claimed in any one of claims 5 to 8, the method of manufacturing a blade load carrying structure comprising the steps of:
step S1, sandwiching the interlayer fabric between two adjacent plates in the thickness direction of the plates;
s2, vacuumizing the accommodating cavity of the plate;
and S3, filling resin into the main body fiber layer of the interlayer fabric, and filling the resin into the accommodating cavity and wrapping the felt layer of the interlayer fabric under vacuum negative pressure and capillary action of the main body fiber layer.
10. A wind turbine blade comprising an interlaminar fabric as in any of claims 1-4; or the wind turbine blade comprises a blade load carrying structure according to any one of claims 5-8.
CN202310303845.7A 2023-03-24 2023-03-24 Interlayer fabric, blade bearing structure, manufacturing method of interlayer fabric and blade bearing structure and wind driven generator blade Pending CN116292072A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310303845.7A CN116292072A (en) 2023-03-24 2023-03-24 Interlayer fabric, blade bearing structure, manufacturing method of interlayer fabric and blade bearing structure and wind driven generator blade

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310303845.7A CN116292072A (en) 2023-03-24 2023-03-24 Interlayer fabric, blade bearing structure, manufacturing method of interlayer fabric and blade bearing structure and wind driven generator blade

Publications (1)

Publication Number Publication Date
CN116292072A true CN116292072A (en) 2023-06-23

Family

ID=86816565

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202310303845.7A Pending CN116292072A (en) 2023-03-24 2023-03-24 Interlayer fabric, blade bearing structure, manufacturing method of interlayer fabric and blade bearing structure and wind driven generator blade

Country Status (1)

Country Link
CN (1) CN116292072A (en)

Similar Documents

Publication Publication Date Title
US20140304957A1 (en) Fiber Composite Material and Method for Production Thereof
CN104241570B (en) It is padded made of the combination raw glass fiber and ultra-fine fibre glass as the diaphragm in lead-acid battery
EP1927464A2 (en) Sandwich panel
WO2003024705A1 (en) Three-dimensional knit spacer fabric sandwich composite
CA2817097A1 (en) Structural warp knit sheet and laminate thereof
JP2004160927A (en) Preform substrate, preform, fiber-reinforced plastic molding and molding method
CN110435238B (en) Bionic microstructure three-dimensional fiber hollow array synchronous weaving functional composite material
CN104972670B (en) Three-dimensional integral composite material and manufacturing method
CN116292072A (en) Interlayer fabric, blade bearing structure, manufacturing method of interlayer fabric and blade bearing structure and wind driven generator blade
US20230234315A1 (en) Cushion material for hot pressing
CN113119491A (en) Carbon glass mixed flat plate and application method thereof
JP6064070B1 (en) Method for reinforcing concrete structure and its reinforcing structure
CN210106062U (en) Wind wheel blade
JP2012188786A (en) Unidirectional woven fabric and method for producing the same, and fiber-reinforced plastic molded article using the unidirectional woven fabric and molding method thereof
CN105426600B (en) A kind of interlayer connection elasticity modulus calculation method that carbon fibre composite is laminated
US20130011625A1 (en) Layered composite component
CN113715418B (en) Foam sandwich composite board and forming process thereof
CN101792954A (en) In-layer hybrid fiber cloth used in civil engineering and multilayer hybrid fiber cloth
CN100380024C (en) Material for gland packing and the gland packing
JP2002059488A (en) Fiber-reinforced plastic molding and method for molding the same
CN201634852U (en) In-layer hybrid fiber cloth and multilayer hybrid fiber cloth for civil engineering
CN218701782U (en) High-strength base cloth fabric
JP2006015611A (en) Method for producing sandwich laminate
CN216893617U (en) Concrete beam reinforced structure with surface embedded with three-dimensional woven fiber cable
CN211546795U (en) Hollow-structured tubular fabric

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination