CN113320193A - Wind power blade root layering structure and manufacturing method thereof - Google Patents
Wind power blade root layering structure and manufacturing method thereof Download PDFInfo
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- CN113320193A CN113320193A CN202110597765.8A CN202110597765A CN113320193A CN 113320193 A CN113320193 A CN 113320193A CN 202110597765 A CN202110597765 A CN 202110597765A CN 113320193 A CN113320193 A CN 113320193A
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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
- 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
- B29C70/72—Encapsulating inserts having non-encapsulated projections, e.g. extremities or terminal portions of electrical components
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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
- 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
- B29C70/36—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 impregnating by casting, e.g. vacuum casting
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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
- B29L2031/085—Wind turbine blades
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Engineering & Computer Science (AREA)
- Composite Materials (AREA)
- Mechanical Engineering (AREA)
- Wind Motors (AREA)
Abstract
The invention discloses a wind power blade root layering structure and a manufacturing method thereof, wherein the wind power blade root layering structure comprises the following components: a blade mold; the outer enhancement layer is laid on the blade mould; the embedded thread sleeve assemblies are intermittently laid on the outer enhancement layer and comprise a plurality of bolt sleeves and UD rods arranged between the adjacent bolt sleeves, and winding yarns are spirally bound in grooves on the outer sides of the bolt sleeves; a foam wedge-shaped strip is arranged behind the end head of the inner side of the bolt sleeve; and the inner reinforcing layer covers the upper part of the embedded thread sleeve assembly. The manufacturing method comprises the steps of manufacturing a pre-buried thread sleeve assembly; preparing before laying; laying an outer enhancement layer; installing a sealing ring; installing the embedded thread sleeve assembly; fixing the embedded thread sleeve assembly; filling unidirectional yarns; laying a blade main component; laying an inner enhancement layer; vacuum infusion and pre-curing. The invention reduces the risk of glue feeding of the embedded thread sleeve, reduces the maintenance working hour and the maintenance cost, and prevents the root part of the blade from deforming during maintenance.
Description
Technical Field
The invention relates to the field of wind power blades, in particular to a layer structure of a wind power blade root and a manufacturing method thereof.
Background
Wind energy is a clean renewable energy source, and wind power generation is increasingly emphasized by countries in the world. Installed capacity is newly increased by tens of "GW" every year in china from land to sea. As the most important component in a wind turbine, a blade plays an irreplaceable role in a wind turbine. A wind power blade with excellent design, reliable quality and high efficiency is a key factor for ensuring the normal operation of the whole wind turbine.
In recent years, wind farms in various regions have been increasing, and while wind farms in land have been developing, offshore wind farms have also started to be built. At present, the land mainly develops 2 MW-3 MW machine types, while the offshore wind power develops 4 MW-6 MW or larger MW level wind power generators, and the length of the fan blade ranges from more than fifty meters to more than one hundred meters.
As the length of the blade is continuously lengthened, the load of the blade root is increased. In order to improve the loading resistance of the blade root, the number of the connecting bolts needs to be increased, and in order to improve the connecting quality, a connecting mode of an embedded bolt sleeve is often adopted. At present, the layer design of wind power blade embedded bolt laying is relatively tedious, materials such as embedded bolt sleeves, UD rods and wedge-shaped strips need to be laid alternately, the mold occupation time is relatively long, the production efficiency is low, and the blade production cycle is long. Meanwhile, the existing blade root is easy to have the risks of bolt sleeve glue feeding and the like, the positioning bolt is not easy to take out, the cleaning process is complex, the bolt sleeve is easy to damage, and the quality of the blade root is reduced.
Disclosure of Invention
The invention aims to provide a wind power blade root layering structure and a manufacturing method thereof, wherein the wind power blade root layering structure is used for reducing the risk of glue feeding of an embedded threaded sleeve and preventing the blade root from deforming during maintenance.
In order to achieve the purpose, the specific technical scheme of the layer laying structure of the wind power blade root and the manufacturing method thereof is as follows:
a wind turbine blade root lay-up structure comprising: a blade mold; the outer enhancement layer is laid on the blade mould; the embedded thread sleeve assemblies are intermittently laid on the outer enhancement layer and comprise a plurality of bolt sleeves and UD rods arranged between the adjacent bolt sleeves, and winding yarns are spirally bound in grooves on the outer sides of the bolt sleeves; a foam wedge-shaped strip is arranged behind the end head of the inner side of the bolt sleeve; and the inner reinforcement layer covers the upper part of the embedded thread sleeve assembly.
Further, a lower coating layer is arranged between the outer enhancement layer and the embedded thread sleeve assembly.
Further, an upper coating layer is arranged between the inner enhancement layer and the embedded thread sleeve assembly.
Furthermore, unidirectional yarns are filled between the adjacent embedded thread sleeve assemblies.
Furthermore, an inner plug cover is arranged at the end head of the inner side of the bolt sleeve, and an outer plug cover is arranged at the end head of the outer side of the bolt sleeve.
Further, a foam wedge-shaped strip is filled between the lower coating layer and the upper coating layer.
Furthermore, fiber bundles are filled at four corners of the bolt sleeve respectively.
A manufacturing method of a wind power blade root layering structure comprises the following steps:
step one, manufacturing a pre-buried thread sleeve assembly: plugging the end heads at the two sides of the bolt sleeve through the inner plugging cover and the outer plugging cover, and binding the winding yarns; laying a lower coating layer, a bolt sleeve, a foam wedge strip, a UD rod, a fiber bundle and an upper coating layer in sequence in a pre-buried thread sleeve assembly mould; the manufacturing of the embedded thread insert assembly is completed through vacuum infusion, pre-curing and shaping treatment;
step two, preparation before layer laying: cleaning the surface of the blade mould, and paving auxiliary materials;
step three, laying an outer enhancement layer: laying the cut glass fiber cloth of the outer enhancement layer on a blade mould layer by layer;
step four, installing a sealing ring: taking out the plug of the bolt sleeve in the middle of the embedded bolt sleeve assembly, and placing a sealing ring in the groove of the bolt sleeve;
step five, installing the embedded thread sleeve assembly: starting to install an embedded thread sleeve assembly by taking a bolt hole at the bottommost part of a die flange as a starting point, placing a bolt sleeve in the middle of the embedded thread sleeve assembly in a manner of aligning to the bolt hole of the die flange, enabling the embedded thread sleeve assembly to be perpendicular to the end face of the die flange, and compacting the embedded thread sleeve assembly to realize the tight attachment of the embedded thread sleeve assembly and the die flange;
step six, fixing the embedded thread sleeve assembly: inserting positioning bolts into corresponding holes of the flange from the outer side of the mold flange and fastening, and sequentially installing embedded thread sleeve assemblies from the lowest point of a mold cavity to the front edge and the rear edge;
step seven, filling unidirectional yarns: and filling gaps larger than 1mm between the two embedded thread sleeve assemblies by using unidirectional yarns.
Step eight, paving a main blade component: paving a girder and a core material according to the design of the blade;
step nine, paving an inner reinforcing layer: laying the cut glass fiber cloth of the inner enhancement layer above the embedded thread sleeve assembly layer by layer;
step ten, vacuum infusion and pre-curing: and (3) finishing the arrangement of the demolding cloth, the composite flow guide net, the glue injection system and the air exhaust system, and finishing the manufacture of the blade root structure through vacuum infusion and precuring.
Further, in the first step, the end heads at two sides of the bolt sleeve are plugged through the inner plugging cover and the outer plugging cover.
And further, in the fourth step, taking out the outer blocking cover of the bolt sleeve at the middle position of the embedded bolt sleeve assembly.
The invention discloses a wind power blade root layering structure and a manufacturing method thereof, and the wind power blade root layering structure has the advantages that:
1) the risk of glue feeding of the embedded threaded sleeve is reduced, the maintenance working time and the maintenance cost are reduced, and the root of the blade is prevented from deforming during maintenance, so that the blade is guaranteed to be delivered and smoothly installed in time;
2) the embedded screw sleeve assembly is used for laying the root of the blade, so that the production efficiency of the blade can be improved, the time of the blade occupying a mold can be shortened, and the rigidity of the blade root can be improved;
3) because of the annular reduction 1/3 on the mould flange, can reduce mould flange and warp, improve flange intensity and life.
Drawings
FIG. 1 is a schematic overall structure diagram of a wind turbine blade root layer structure according to the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1 of the present invention;
FIG. 3 is a cross-sectional view taken at A-A of FIG. 1 in accordance with the present invention;
FIG. 4 is a top cross-sectional view of the embedded bolt bushing assembly of the present invention;
fig. 5 is a schematic structural view of a mold flange according to the present invention.
In the figure: 1. a blade mold; 2. an outer reinforcement layer; 3. embedding a threaded sleeve assembly; 4. an inner reinforcement layer; 5. a unidirectional yarn; 6. a mold flange; 7. positioning the bolt; 8. a seal ring; 31. a bolt sleeve; 32. winding the yarn; 33. an inner plug cover; 34. an outer plug cover; 35. a foam wedge strip; 36. UD rod; 37. a fiber bundle; 38. coating a layer; 39. and (7) a lower coating layer.
Detailed Description
In order to better understand the purpose, structure and function of the present invention, a wind turbine blade root layer structure and a manufacturing method thereof according to the present invention are described in further detail below with reference to the accompanying drawings.
As shown in fig. 1 to 5, which illustrate a wind power blade root layer structure and a manufacturing method thereof according to the present invention, the wind power blade root layer structure includes a blade mold 1, an outer enhancement layer 2, an embedded thread insert assembly 3, an inner enhancement layer 4, a unidirectional yarn 5, a mold flange 6, a positioning bolt 7, and a sealing ring 8.
Specifically, an outer enhancement layer 2 is laid on a blade mould 1, a plurality of embedded thread insert assemblies 3 are laid on the outer enhancement layer 2 in sequence and intermittently, the embedded thread insert assemblies 3 are located at the root positions of blades, and an inner enhancement layer 4 covers the embedded thread insert assemblies 3. The outer enhancement layer 2 and the inner enhancement layer 4 are both composed of a plurality of layers of glass fiber cloth, and the distance between the outer enhancement layer 2 and the inner enhancement layer 4 is gradually increased from far away to close to the embedded thread insert component 3.
In addition, a lower coating layer 39 is arranged between the outer enhancement layer 2 and the embedded thread insert assembly 3, an upper coating layer 38 is arranged between the inner enhancement layer 4 and the embedded thread insert assembly 3, and the lower coating layer 39 and the upper coating layer 38 are respectively tightly attached to the outer enhancement layer 2 and the inner enhancement layer 4.
Further, as shown in fig. 1 and 2, unidirectional yarns 5 are filled between adjacent embedded thread insert assemblies 3 to prevent resin-rich formation between the embedded thread insert assemblies 3, thereby improving root strength.
Further, the embedded thread sleeve assembly 3 comprises a bolt sleeve 31, a winding yarn 32, an inner blocking cover 33, an outer blocking cover 34, a foam wedge strip 35, a UD rod 36, a fiber bundle 37, an upper coating layer 38 and a lower coating layer 39. Wherein, lay lower coating 39, bolt sleeve 31, foam wedge strip 35, UD stick 36, tow 37, upper coating 38 in proper order, through vacuum infusion, precuring, the processing of repairing the type, accomplish the preparation of pre-buried swivel nut subassembly 3.
Specifically, each insert nut assembly 3 includes a plurality of bolt sleeves 31 and a plurality of UD rods 36, and the UD rods 36 are disposed between adjacent bolt sleeves 31. In the embodiment of the present invention, as shown in fig. 2, each embedded screw sleeve assembly 3 includes 3 bolt sleeves 31 and 3 UD rods 36, but the present invention is not limited thereto, and the actual number may be adjusted according to the circumstances.
Further, an inner cap 33 is provided at an inner end of the bolt housing 31, and an outer cap 34 is provided at an outer end thereof, to prevent resin from entering the bolt housing 31 during vacuum infusion. When the root of the blade is paved, in order to install and fix the embedded bolt sleeve assembly 3, the outer blocking cover 34 of the middle bolt sleeve 31 needs to be taken out.
Further, the outer surface of the bolt sleeve 31 is provided with a groove, and winding yarns 32 are spirally bound in the groove on the outer side of the bolt sleeve 31 so as to ensure the infiltration effect. When laying, as shown in fig. 4, a foam wedge strip 35 is placed behind the inner end of the bolt sleeve 31 (i.e. behind the inner plug cover 33), and the foam wedge strip 35 is filled between the lower coating layer 39 and the upper coating layer 38.
Further, in order to prevent resin enrichment, the four corners of the bolt housing 31 are filled with fiber bundles 37, respectively. In order to facilitate the molding of the embedded bolt sleeve assembly, a lower coating layer 39 and an upper coating layer 38 are respectively arranged on two sides and are made of a plurality of layers of glass fiber cloth.
Further, when the embedded screw sleeve component 3 is laid, a mold flange 6 is arranged on the end face of the outer side of the embedded screw sleeve component 3 in a clinging mode, the embedded screw sleeve component is connected to the mold flange 6 in a fastening mode through a positioning bolt 7, the positioning bolt is inserted into a corresponding hole of the mold flange from the outer side of the mold flange 6 and is fastened, and the embedded screw sleeve component 3 is installed from the lowest point of a mold cavity of the mold to the front edge and the rear edge in sequence. In order to prevent the bolt sleeve 31 from entering glue, the seal ring 8 is placed in the groove at the end of the bolt sleeve 31 when the root part of the blade is paved.
The invention also discloses a manufacturing method of the wind power blade root layer structure, which comprises the following steps:
step one, manufacturing a pre-buried thread sleeve assembly: plugging the end heads at two sides of the bolt sleeve 31 by using an inner plugging cover 33 and an outer plugging cover 34, and binding and winding yarns 32; laying a lower coating layer 39, a bolt sleeve 31, a foam wedge strip 35, a UD rod 36, a fiber bundle 37 and an upper coating layer 38 in sequence in a die of the embedded thread sleeve component 3; and (4) completing the manufacture of the embedded thread insert assembly 3 through vacuum infusion, pre-curing and shaping treatment.
Step two, preparation before layer laying: cleaning the surface of the blade mold 1, and laying auxiliary materials such as demolding cloth.
Step three, laying an outer enhancement layer 2: and according to the layer design, paving the cut glass fiber cloth of the outer enhancement layer 2 on the blade mould 1 layer by layer.
Step four, installing a sealing ring 8: and (3) taking out the outer blocking cover 34 of the bolt sleeve 31 in the middle of the embedded bolt sleeve assembly 3, putting a sealing ring into the groove of the bolt sleeve, and pressing the sealing ring into the groove completely, so that the phenomenon of outward springing cannot occur.
Step five, installing the embedded thread sleeve assembly 3: the method comprises the following steps of starting to install the embedded swivel nut assembly 3 by taking a bolt hole at the bottommost part of the die flange 6 as a starting point, placing a bolt sleeve in the middle of the embedded swivel nut assembly 3 in an aligning mode with the bolt hole of the die flange 6, enabling the embedded swivel nut assembly 3 to be perpendicular to the end face of the die flange 6, and compacting the embedded swivel nut assembly by hands to enable the embedded swivel nut assembly 3 to be tightly attached to the die flange 6.
Step six, fixing the embedded thread sleeve assembly 3: and (3) inserting positioning bolts into corresponding holes of the flanges from the outer sides of the flanges 6 of the mold by personnel on the outer sides of the mold, fastening by hands, then fastening by using a pneumatic wrench and the like, and sequentially installing the embedded thread insert assemblies 3 from the lowest point of the mold cavity of the mold to the front edge and the rear edge.
Step seven, filling unidirectional yarns: and filling a gap which is larger than 1mm between the two embedded thread sleeve assemblies 3 by using the unidirectional yarn 5.
Step eight, paving a main blade component: and paving the girder, the core material and the like according to the blade design.
Step nine, paving an inner reinforcing layer 4: and according to the layer design, laying the cut glass fiber cloth of the inner enhancement layer 4 above the embedded thread sleeve component 3 layer by layer.
Step ten, vacuum infusion and pre-curing: and (3) finishing the arrangement of the demolding cloth, the composite flow guide net, the glue injection system, the air exhaust system and the like, and finishing the manufacture of the blade root structure through vacuum infusion and precuring.
According to the wind power blade root laying layer structure and the manufacturing method thereof, the risk of glue feeding of the embedded threaded sleeves is reduced, the maintenance working time and the maintenance cost are reduced, the blade root is prevented from deforming during maintenance, and timely delivery and smooth installation of the blade are guaranteed; the embedded screw sleeve assembly is used for laying the root of the blade, so that the production efficiency of the blade can be improved, the time of the blade occupying a mold can be shortened, and the rigidity of the blade root can be improved; because of the annular reduction 1/3 on the mould flange, can reduce mould flange and warp, improve flange intensity and life.
The present invention has been further described with reference to specific embodiments, but it should be understood that the detailed description should not be construed as limiting the spirit and scope of the present invention, and various modifications made to the above-described embodiments by those of ordinary skill in the art after reading this specification are within the scope of the present invention.
Claims (10)
1. The utility model provides a wind-powered electricity generation blade root portion spreads layer structure which characterized in that includes:
a blade mold (1);
the outer reinforcing layer (2) is laid on the blade mould (1);
the embedded thread sleeve assemblies (3) are intermittently laid on the outer reinforcing layer (2) and comprise a plurality of bolt sleeves (31) and UD rods (36) arranged between the adjacent bolt sleeves (31), and winding yarns (32) are spirally bound in grooves on the outer sides of the bolt sleeves (31); a foam wedge-shaped strip (35) is arranged behind the end head of the inner side of the bolt sleeve (31); and
and the inner reinforcing layer (4) covers the upper part of the embedded thread sleeve assembly (3).
2. The wind power blade root laying layer structure as claimed in claim 1, wherein a lower coating layer (39) is arranged between the outer reinforcement layer (2) and the embedded thread sleeve assembly (3).
3. The wind power blade root laying layer structure as claimed in claim 2, wherein an upper coating layer (38) is arranged between the inner reinforcement layer (4) and the embedded thread sleeve assembly (3).
4. The wind power blade root laying layer structure as claimed in claim 1, wherein unidirectional yarns (5) are filled between adjacent embedded thread sleeve assemblies (3).
5. The ply structure for the root of a wind power blade according to claim 1, characterized in that an inner plug cover (33) is arranged at the end of the inner side of the bolt sleeve (31), and an outer plug cover (34) is arranged at the end of the outer side.
6. Wind blade root ply structure according to claim 3, characterized in that a foam wedge strip (35) is filled between the lower cladding layer (39) and the upper cladding layer (38).
7. The ply structure for wind turbine blade roots according to claim 1, characterized in that the four corners of the bolt sleeve (31) are respectively filled with fiber bundles (37).
8. A manufacturing method of a wind power blade root layering structure is characterized by comprising the following steps:
step one, manufacturing a pre-buried thread sleeve assembly: the end heads at two sides of the bolt sleeve (31) are blocked by an inner blocking cover (33) and an outer blocking cover (34), and the winding yarns (32) are bound; in the pre-buried thread sleeve assembly mould, a lower coating layer (39), a bolt sleeve (31), a foam wedge-shaped strip (35), a UD rod (36), a fiber bundle (37) and an upper coating layer (38) are laid in sequence; the embedded thread sleeve assembly (3) is manufactured through vacuum infusion, pre-curing and shaping treatment;
step two, preparation before layer laying: cleaning the surface of the blade mould (1) and paving auxiliary materials;
step three, paving an outer reinforcing layer (2): laying the glass fiber cloth of the cut outer enhancement layer (2) on the blade mould (1) layer by layer;
step four, installing a sealing ring (8): taking out the plug of the bolt sleeve (31) in the middle of the embedded bolt sleeve assembly (3), and placing a sealing ring (8) in a groove of the bolt sleeve (31);
step five, installing the embedded thread sleeve assembly (3): the method comprises the following steps of (1) starting to install an embedded swivel nut assembly (3) by taking a bolt hole at the bottommost part of a die flange (6) as a starting point, placing a bolt sleeve (31) in the middle of the embedded swivel nut assembly (3) in a mode of aligning to the bolt hole of the die flange (6), enabling the embedded swivel nut assembly (3) to be perpendicular to the end face of the die flange, and compacting the embedded swivel nut assembly to achieve the purpose that the embedded swivel nut assembly is tightly attached to the die flange;
step six, fixing the embedded thread sleeve assembly (3): inserting positioning bolts into corresponding holes of the flanges from the outer sides of the mold flanges (6) and fastening the positioning bolts, and sequentially installing embedded thread sleeve assemblies (3) from the lowest point of a mold cavity to the front edge and the rear edge;
step seven, filling unidirectional yarns: and filling gaps which are larger than 1mm between the two embedded thread sleeve assemblies (3) through unidirectional yarns (5).
Step eight, paving a main blade component: paving a girder and a core material according to the design of the blade;
step nine, paving an inner reinforcing layer (4): laying the cut glass fiber cloth of the inner enhancement layer (4) above the embedded thread sleeve component (3) layer by layer;
step ten, vacuum infusion and pre-curing: and (3) finishing the arrangement of the demolding cloth, the composite flow guide net, the glue injection system and the air exhaust system, and finishing the manufacture of the blade root structure through vacuum infusion and precuring.
9. The manufacturing method of the wind power blade root laying layer structure according to claim 8, wherein in the first step, the ends at two sides of the bolt sleeve (31) are blocked through an inner blocking cover (33) and an outer blocking cover (34).
10. The manufacturing method of the layer structure of the wind power blade root portion according to claim 9, characterized in that in the fourth step, the outer plug cover (34) of the bolt sleeve (31) at the middle position of the embedded bolt sleeve assembly (3) is taken out.
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| CN114683579A (en) * | 2022-03-17 | 2022-07-01 | 上海晋飞碳纤科技股份有限公司 | Carbon fiber product embedded pipe body forming structure and forming method |
| CN116085188A (en) * | 2023-04-07 | 2023-05-09 | 新创碳谷集团有限公司 | Wind power blade segmented connection pretightening force connection structure and method |
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| CN205929500U (en) * | 2016-08-18 | 2017-02-08 | 三一重型能源装备有限公司 | A paving layer structure and blade for blade |
| CN106426988A (en) * | 2016-11-18 | 2017-02-22 | 中复连众（哈密）复合材料有限公司 | Preparation method of megawatt wind generator pre-embedded bolt blade root for preventing cavity of root end face from appearing |
| CN109648894A (en) * | 2018-12-28 | 2019-04-19 | 连云港中复连众复合材料集团有限公司 | A kind of production method of the wind blade root prefabricated component of the set containing pre-embedded bolt |
| CN211030585U (en) * | 2019-11-14 | 2020-07-17 | 山东天盾矿用设备有限公司 | A pre-buried frock for built-in fitting |
| CN212454679U (en) * | 2020-06-23 | 2021-02-02 | 吉林重通成飞新材料股份公司 | Prefabricated blade root structure of megawatt wind-powered electricity generation blade |
| CN111765041A (en) * | 2020-07-14 | 2020-10-13 | 连云港中复连众复合材料集团有限公司 | Root connecting structure of wind power blade and manufacturing method thereof |
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| CN114683579A (en) * | 2022-03-17 | 2022-07-01 | 上海晋飞碳纤科技股份有限公司 | Carbon fiber product embedded pipe body forming structure and forming method |
| CN116085188A (en) * | 2023-04-07 | 2023-05-09 | 新创碳谷集团有限公司 | Wind power blade segmented connection pretightening force connection structure and method |
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Address after: 071051 No.88, Fengfeng street, high tech Development Zone, Baoding City, Hebei Province Patentee after: Guoneng United Power Technology (Baoding) Co.,Ltd. Address before: 071051 No.88, Fengfeng street, high tech Development Zone, Baoding City, Hebei Province Patentee before: GUODIAN UNITED POWER TECHNOLOGY (BAODING) Co.,Ltd. |