CN118438699B - Processing method of blade root structure of wind power blade - Google Patents
Processing method of blade root structure of wind power blade Download PDFInfo
- Publication number
- CN118438699B CN118438699B CN202410906631.3A CN202410906631A CN118438699B CN 118438699 B CN118438699 B CN 118438699B CN 202410906631 A CN202410906631 A CN 202410906631A CN 118438699 B CN118438699 B CN 118438699B
- Authority
- CN
- China
- Prior art keywords
- screw sleeve
- blade root
- pultrusion
- blade
- core material
- 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.)
- Active
Links
- 238000003672 processing method Methods 0.000 title claims abstract description 8
- 238000000034 method Methods 0.000 claims abstract description 38
- 230000000712 assembly Effects 0.000 claims abstract description 28
- 238000000429 assembly Methods 0.000 claims abstract description 28
- 238000004519 manufacturing process Methods 0.000 claims abstract description 18
- 239000011162 core material Substances 0.000 claims description 61
- 229910052751 metal Inorganic materials 0.000 claims description 37
- 239000002184 metal Substances 0.000 claims description 37
- 238000005253 cladding Methods 0.000 claims description 31
- 239000004744 fabric Substances 0.000 claims description 26
- 238000005520 cutting process Methods 0.000 claims description 23
- 239000000463 material Substances 0.000 claims description 13
- 229920001875 Ebonite Polymers 0.000 claims description 10
- 239000000853 adhesive Substances 0.000 claims description 6
- 230000001070 adhesive effect Effects 0.000 claims description 6
- 238000012545 processing Methods 0.000 claims description 4
- 239000012783 reinforcing fiber Substances 0.000 claims description 4
- 210000001624 hip Anatomy 0.000 claims description 3
- 230000035515 penetration Effects 0.000 claims description 3
- 238000003754 machining Methods 0.000 claims 1
- 239000011248 coating agent Substances 0.000 abstract description 17
- 238000000576 coating method Methods 0.000 abstract description 17
- 238000009434 installation Methods 0.000 abstract description 7
- 238000010924 continuous production Methods 0.000 abstract description 4
- 230000003014 reinforcing effect Effects 0.000 abstract description 3
- 239000000306 component Substances 0.000 description 16
- 238000013461 design Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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
- B29C70/40—Shaping or impregnating by compression not applied
- B29C70/50—Shaping or impregnating by compression not applied for producing articles of indefinite length, e.g. prepregs, sheet moulding compounds [SMC] or cross moulding compounds [XMC]
- B29C70/52—Pultrusion, i.e. forming and compressing by continuously pulling through a die
-
- 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
-
- 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
- B29C70/40—Shaping or impregnating by compression not applied
- B29C70/50—Shaping or impregnating by compression not applied for producing articles of indefinite length, e.g. prepregs, sheet moulding compounds [SMC] or cross moulding compounds [XMC]
- B29C70/52—Pultrusion, i.e. forming and compressing by continuously pulling through a die
- B29C70/525—Component parts, details or accessories; Auxiliary operations
-
- 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
- B29C70/40—Shaping or impregnating by compression not applied
- B29C70/50—Shaping or impregnating by compression not applied for producing articles of indefinite length, e.g. prepregs, sheet moulding compounds [SMC] or cross moulding compounds [XMC]
- B29C70/52—Pultrusion, i.e. forming and compressing by continuously pulling through a die
- B29C70/525—Component parts, details or accessories; Auxiliary operations
- B29C70/526—Pultrusion dies, e.g. dies with moving or rotating parts
-
- 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
- B29C70/545—Perforating, cutting or machining during or after moulding
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Composite Materials (AREA)
- Mechanical Engineering (AREA)
- Wind Motors (AREA)
Abstract
The invention relates to the technical field of wind power blade production, in particular to a processing method of a wind power blade root structure, wherein a blade root comprises an inner coating, an outer coating and a screw sleeve assembly, a plurality of screw sleeve assemblies are arranged in parallel along the circumferential direction of the blade root, and the screw sleeve assembly and the inner coating and the outer coating are integrally poured and molded; the sleeve assembly includes a housing and an inner core disposed along a length thereof. The screw sleeve component is formed by adopting a pultrusion process, so that the production efficiency can be improved by continuous production; in the blade root forming process, directly laying the pultruded swivel nut assemblies in a blade root die in parallel and integrally forming the swivel nut assemblies and the shell, and eliminating the procedure of prefabricating the blade root; the pultrusion screw sleeve component replaces UD bars, PET bars and screw sleeves in the traditional blade root structure, so that the covering laying and the screw sleeve component are synchronously installed; the single pultrusion swivel nut component is low in weight, two persons can complete installation in a matched mode, the thickness of the blade root reinforcing layer can be reduced, the blade root layering time is shortened, and layering and installation procedures in the blade root production process are optimized.
Description
Technical Field
The invention relates to the technical field of wind power blade production, in particular to a processing method of a blade root structure of a wind power blade.
Background
Wind energy has great development potential as a pollution-free renewable green development energy source, the wind energy is usually utilized in a mode that wind energy is converted into electric energy through a wind turbine generator, so that power is generated through wind power, the blade is one of core components of the wind turbine generator, and the embedded sandwich structure of the blade root part of the blade provides integral rigidity for the wind power blade. With the expansion of the wind power generation market, the load demand on the blade root is increasing, and meanwhile, the design of a blade structure with larger size is also required.
The bolt sleeve of fan blade root part is pre-buried to be set up, and the bolt sleeve connects the core stick and cooperates the wedge strip in both sides, arranges along prefabricated blade root mould circumference and lays and pour into shape in prefabricated blade root mould, obtains the prefabricated blade root that bolt sleeve and other structural materials bond as an organic wholely. The traditional prefabricated blade root structure needs to be provided with a set of blade root mould aiming at each blade profile, so that the production cost of the blade root part of the fan blade is greatly increased; the prefabricated blade root is lifted to be paved and poured in the blade mould, defects between the shell and the prefabricated blade root are difficult to maintain, and silver marks are easy to occur when the prefabricated blade root is heated for the second time; the prefabricated blade root structure is easy to deform, and the installation difficulty is greatly improved.
Disclosure of Invention
The invention provides a processing method of a blade root structure of a wind power blade, which can effectively solve the problems in the background technology.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
A wind power blade root structure comprising: the inner skin, the outer skin and the screw sleeve assembly are arranged between the inner skin and the outer skin, and the screw sleeve assembly is provided with a plurality of screw sleeve assemblies in parallel along the circumferential direction of the blade root and is integrally poured with the inner skin and the outer skin;
The screw sleeve assembly comprises a shell and an inner core arranged along the length direction of the shell, the inner core comprises a metal screw sleeve and a strip-shaped piece, an internal thread is formed at the tail end of the metal screw sleeve, and the strip-shaped piece is connected with the tail end of the metal screw sleeve;
the strip-shaped piece is of a wedge-shaped structure, a first inclined plane is arranged at one end, far away from the metal screw sleeve, of the strip-shaped piece, the shell is formed in the outer ring of the inner core through a pultrusion process, and a second inclined plane is arranged corresponding to the first inclined plane.
Further, the one end that the strip spare was kept away from first inclined plane is provided with tenon portion, tenon portion with metal swivel nut tail end interference fit to it is fixed to link to each other through the structural adhesive.
Further, a conformal gasket is arranged between two adjacent screw sleeve components, the conformal gasket is in a triangular structure, and the side surfaces of two waists of the conformal gasket are respectively attached to the two adjacent screw sleeve components.
Further, a shape-following gasket is arranged between two adjacent screw sleeve components, the shape-following gasket is of a T-shaped structure and comprises a horizontal part and a vertical part, the screw sleeve components are positioned on the horizontal part, and the vertical part is of a triangular structure and is positioned between two adjacent screw sleeve components.
Further, the shell comprises an inner cladding and an outer cladding, the inner cladding comprises a plurality of layers of fabrics wound on the outer ring of the inner core, and the outer cladding is formed at four corners of the outer ring of the inner cladding through yarn pultrusion.
Further, the housing includes an inner cladding including a multi-layered fabric quadrangled around an outer circumference of the inner core, and an outer cladding including yarns filled at four circumferential corners between the outer cladding and the inner core.
A processing method of a blade root structure of a wind power blade is applied to processing the blade root structure of the wind power blade, and comprises the following steps:
Splicing the screw sleeve core materials and continuously producing screw sleeve sectional materials through a pultrusion process;
Cutting the screw sleeve section bar to obtain the screw sleeve assembly;
And paving an outer coating, a screw sleeve assembly and an inner coating in the blade root mould, and integrally pouring and forming.
Further, in the splicing process of the screw sleeve core material, two metal screw sleeves are connected through stud bolts to form a screw sleeve unit, a hard rubber gasket is arranged between the two metal screw sleeves, any end of the screw sleeve unit is connected with a core material rod, and the screw sleeve unit and the core material rod are connected through penetration to form a continuous screw sleeve core material;
Clamping the screw sleeve core material on a pultrusion production line, continuously conveying reinforcing fibers along the pultrusion direction, continuously forming screw sleeve sectional materials by matching with a pultrusion die, carrying out online nondestructive scanning on the screw sleeve sectional materials, and determining a first cutting line and a second cutting line at the positions of the core material rod and the hard rubber gasket;
and obliquely cutting the screw sleeve section along the first cutting line and continuously obtaining section units, and carrying out circular cutting on the section units along the second cutting line to obtain two screw sleeve assemblies.
Further, in the pultrusion process of the screw sleeve section, a plurality of layers of fabrics are wound on the outer ring of the screw sleeve core material through a cloth guiding tool to form an inner cladding, and yarns are adopted and matched with a pultrusion die to form an outer cladding at four corners of the outer ring of the fabrics.
Further, in the pultrusion process of the screw sleeve section, a fabric is pultruded by matching with a cloth guide tool to form a quadrilateral structure to be coated on the outer ring of the screw sleeve core material to form an outer wrapping layer, and meanwhile, yarns are filled at four circumferential corners between the outer wrapping layer and the screw sleeve core material by matching with a yarn guide tool to form an inner wrapping layer.
The beneficial effects of the invention are as follows:
in the invention, the screw sleeve component is formed by adopting a pultrusion process, so that the production efficiency can be improved by continuous production; in the blade root forming process, directly laying the pultruded swivel nut assemblies in a blade root die in parallel and integrally forming the swivel nut assemblies and the shell, and eliminating the procedure of prefabricating the blade root; the pultrusion screw sleeve component replaces UD bars, PET bars and screw sleeves in the traditional blade root structure, so that the covering laying and the screw sleeve component are synchronously installed; the single pultrusion swivel nut component is low in weight, two persons can complete installation in a matched mode, the thickness of the blade root reinforcing layer can be reduced, the blade root layering time is shortened, and layering and installation procedures in the blade root production process are optimized.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings may be obtained according to the drawings without inventive effort to those skilled in the art.
FIG. 1 is a schematic view of a blade root structure of a wind turbine blade in accordance with the present invention;
FIG. 2 is an exploded view of the blade root structure of the wind turbine blade of the present invention;
FIG. 3 is a schematic view of the process of the sleeve assembly of the present invention;
FIG. 4 is a schematic view of the structure of the screw sleeve assembly of the present invention;
FIG. 5 is an enlarged view of a partial structure at A in FIG. 4;
FIG. 6 is a schematic illustration of a molding process of a sleeve assembly according to the present invention;
FIG. 7 is a schematic view of a molding structure of a screw sleeve assembly according to the present invention;
FIG. 8 is a schematic view of another insert assembly forming structure according to the present invention;
FIG. 9 is a schematic view of another insert assembly forming structure according to the present invention;
FIG. 10 is a schematic view of another compliant shim in the configuration of a blade root in accordance with the present invention;
FIG. 11 is a cross-sectional view of the blade root structure of FIG. 10;
Fig. 12 is a schematic cross-sectional view of another blade root configuration.
Reference numerals: 1. an inner skin; 2. an outer skin; 3. a swivel assembly; 31. a housing; 311. an inner cladding; 312. an outer cladding; 313. a second inclined surface; 32. an inner core; 321. a metal screw sleeve; 322. a strip; 322a, a first incline; 322b, tenon portion; 323. a stud bolt; 324. a hard rubber gasket; 4. a conformal gasket; 41. a horizontal portion; 42. a vertical portion; 5. a sleeve core material; 51. a core rod; 6. a thread sleeve section bar; 7. profile units.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
A wind power blade root structure as shown in fig. 1 to 12, comprising: the inner coating 1, the outer coating 2 and the screw sleeve assembly 3 arranged between the inner coating 1 and the outer coating 2, wherein a plurality of screw sleeve assemblies 3 are arranged in parallel along the circumferential direction of the blade root and are integrally poured and molded with the inner coating 1 and the outer coating 2; the screw sleeve assembly 3 comprises a shell 31 and an inner core 32 arranged along the length direction of the shell, the inner core 32 comprises a metal screw sleeve 321 and a strip-shaped piece 322, an internal thread is arranged at the tail end of the metal screw sleeve 321, and the strip-shaped piece 322 is connected with the tail end of the metal screw sleeve 321; the bar-shaped member 322 is provided with a wedge-shaped structure, a first inclined surface 322a is arranged at one end of the bar-shaped member far away from the metal threaded sleeve 321, the shell 31 is formed on the outer ring of the inner core 32 through a pultrusion process, and a second inclined surface 313 is arranged corresponding to the first inclined surface 322 a.
In the invention, the screw sleeve component 3 is formed by adopting a pultrusion process, so that the production efficiency can be improved by continuous production; in the blade root forming process, directly laying the pultruded swivel nut assemblies 3 in a blade root die in parallel and integrally forming the swivel nut assemblies and the shell 31, and eliminating the procedure of prefabricating the blade root; the pultrusion screw sleeve component 3 replaces UD bars, PET bars and screw sleeves in the traditional blade root structure, so that the covering laying and the screw sleeve component 3 are synchronously installed; the weight of the single pultrusion swivel nut component 3 is not high, two persons can complete installation in a matched mode, the thickness of the blade root reinforcing layer can be reduced by the pultrusion swivel nut component 3, the blade root layering time is shortened, and layering and installation procedures in the blade root production process are optimized.
In this embodiment, a tenon portion 322b is disposed at an end of the strip-shaped member 322 far away from the first inclined surface 322a, and the tenon portion 322b is in interference fit with the tail end of the metal threaded sleeve 321 and is fixedly adhered by structural adhesive.
The strip-shaped pieces 322 are symmetrically and obliquely cut and formed through the core material rod 51, so that the core material rod 51 can manufacture two strip-shaped pieces 322, both ends of the core material rod 51 are processed into tenon parts 322b which are suitable for the tail end interface of the metal threaded sleeve 321, the tenon parts are in interference fit with the interface of the metal threaded sleeve 321, and the strip-shaped pieces 322 are fixedly adhered through structural adhesive, so that the connection strength of the strip-shaped pieces 322 and the metal threaded sleeve 321 is enhanced.
The core rod 51 is provided in a straight cylindrical shape, and in consideration of the need for high temperature resistance, PVC material cannot meet the requirements and is easily oxidized during the pultrusion process, so that a high temperature resistant material such as PMI or PET is used.
The metal threaded sleeve 321 is connected with the strip-shaped piece 322 in a simple inserting mode, and a plug is arranged at the tail end of the metal threaded sleeve 321 in a traditional prefabrication process to achieve a sealing effect; in this embodiment, the two ends of the length of the core rod 51 are processed into the tenon portions 322b similar to the plug shape, and a proper amount of structural adhesive is applied to the tenon portions 322b at the two ends, and the core rod 51 and the metal threaded sleeves 321 at the two ends are bonded and fixed by heating through the structural adhesive, so that the two inner cores 32 can be obtained after the core rod 51 is cut off.
In this embodiment, as shown in fig. 2, a conformal gasket 4 is disposed between two adjacent screw sleeve assemblies 3, the conformal gasket 4 is configured as a triangle structure, and two sides of the waist are respectively attached to two adjacent screw sleeve assemblies 3.
In this embodiment, as shown in fig. 10 and 11, a conformal gasket 4 is disposed between two adjacent screw sleeve assemblies 3, the conformal gasket 4 is configured as a T-shaped structure, and includes a horizontal portion 41 and a vertical portion 42, the screw sleeve assemblies 3 are located on the horizontal portion 41, and the vertical portion 42 is in a triangular structure and is located between two adjacent screw sleeve assemblies 3.
The above embodiment discloses two kinds of shape-following gasket 4 structures, and the cross section of swivel nut subassembly 3 adopts square structural design, increases shape-following gasket 4 between two adjacent swivel nut subassemblies 3 when the blade layering can adapt to the circumference of whole blade root and spread the demand.
In this embodiment, as shown in fig. 7, the case 31 includes an inner cladding 311 and an outer cladding 312, the inner cladding 311 includes a multi-layered fabric wound around the outer circumference of the sleeve core 5, and the outer cladding 312 is formed at the four corners of the outer circumference of the inner cladding 311 by yarn pultrusion.
In this embodiment, as shown in fig. 8, the case 31 includes an inner cladding 311 and an outer cladding 312, the outer cladding 312 includes a multi-layered fabric that is quadrangular around the outer circumference of the inner core 32, and the inner cladding 311 includes yarns filled at four corners in the circumferential direction between the outer cladding 312 and the inner core 32.
In the structure of the shell 31 of the two types of thread sleeve assemblies 3 disclosed in the above embodiment, the fabric and the yarn are limited and shaped on the outer ring of the thread sleeve core 5 through the pultrusion die, and are integrally formed with the thread sleeve core 5 through the pultrusion process.
Furthermore, the invention also discloses a processing method applied to the blade root structure of the wind power blade, which comprises the following steps:
Splicing the screw sleeve core materials 5 and continuously producing screw sleeve sectional materials 6 through a pultrusion process; cutting the screw sleeve section bar 6 to obtain a screw sleeve assembly 3; the outer coating 2, the screw sleeve assembly 3 and the inner coating 1 are paved in the blade root mould and integrally poured and molded.
The screw sleeve component 3 of the blade root is continuously molded by adopting a pultrusion process, and the processing production of the screw sleeve component 3 in different blade shapes is realized by replacing a pultrusion mould in a pultrusion production line; the insert assembly 3 is laid in the blade root die side by side and integrally formed with the shell 31, the process of prefabricating the blade root is omitted, and silver lines can be effectively reduced by one-step forming of the blade root.
In the embodiment, in the splicing process of the thread sleeve core material 5, two metal thread sleeves 321 are connected through stud 323 to form a thread sleeve unit, a hard rubber gasket 324 is arranged between the two metal thread sleeves 321, any end of the thread sleeve unit is connected with a core material rod 51, and the thread sleeve unit and the core material rod 51 are connected through penetration to form a continuous thread sleeve core material 5; clamping the screw sleeve core material 5 on a pultrusion production line, continuously conveying reinforcing fibers along the pultrusion direction, continuously forming screw sleeve sectional materials 6 by matching with a pultrusion die, scanning the screw sleeve sectional materials 6 in an online nondestructive manner, and determining a first cutting line and a second cutting line at the positions of the core material rod 51 and the hard rubber gasket 324; the sleeve section 6 is obliquely cut along a first cutting line and continuously obtained into section units 7, and the section units 7 are subjected to circular cutting along a second cutting line to obtain two sleeve assemblies 3.
Referring to fig. 6 specifically, in the process of forming the blade root, the conventional UD rod, PET rod, and turnbuckle are integrally formed by pultrusion, that is, in this embodiment, the metal turnbuckle 321 is connected with the core rod 51 and is matched with the reinforcing fiber to form the turnbuckle section 6 through the pultrusion production line, the turnbuckle section 6 is cut online to obtain continuous section units 7, and then the section units 7 are cut annularly to obtain two turnbuckle assemblies 3, so that continuous production of the turnbuckle assemblies 3 is realized; the screw sleeve assembly 3 is directly placed in the blade mould to be integrally poured with the shell 31, so that the procedure of prefabricating the blade root is eliminated, the prefabricated blade root mould is not required to be manufactured separately, and the production cost is reduced; the production efficiency is improved and the forming process is simplified.
The screw sleeve core material 5 of the screw sleeve section bar 6 is formed by connecting screw sleeve units and core material rods 51 in a penetrating way, the screw sleeve assembly 3 comprises two metal screw sleeves 321 which are oppositely arranged and are connected through a stud 323, a hard rubber gasket 324 is arranged between the two metal screw sleeves 321 for sealing, two ends of the stud 323 respectively extend into the two metal screw sleeves 321 and are in threaded connection with the inner threads of the two metal screw sleeves 321, and the hard rubber gasket 324 is sleeved on the outer ring of the stud 323 and is abutted against the end faces of the metal screw sleeves 321 at two sides.
As shown in fig. 5, the rubber gasket can not only play a role in sealing the port of the metal threaded sleeve 321 to prevent resin from entering, but also serve as a cutting point of a second cutting line when the threaded sleeve section bar 6 is cut in a ring, and can be prevented from being directly cut on the stud 323 in the ring cutting process. After the turnbuckle unit in the section bar unit 7 is cut off at the hard rubber gasket 324, two turnbuckle assemblies 3 are obtained, and one turnbuckle assembly 3 is connected with a stud 323, so that the stud 323 is taken down for facilitating the subsequent blade forming process, and the turnbuckle unit can be repeatedly used and can be applied to connecting blades and a fan hub.
As a preference of the above embodiment, as shown in fig. 7, during the pultrusion process of the thread sleeve section 6, a multi-layer fabric is wound around the outer ring of the thread sleeve core 5 through a cloth guiding tool to form an inner cladding 311, and yarns are adopted and matched with a pultrusion mold to form an outer cladding 312 at four corners of the outer ring of the fabric. Wherein the fabric is a triaxial fabric, the triaxial fabric usually has 0 degree yarn and + -45 yarns, the fabric must have 0 degree yarn in this embodiment, otherwise, the pultrusion process cannot be used.
As a preference of the above embodiment, as shown in fig. 8, in the process of pultrusion of the thread sleeve section bar 6, a fabric is pultruded to form a quadrilateral structure to be coated on the outer ring of the thread sleeve core 5 to form an outer coating 312, and simultaneously, yarns are filled at four corners in the circumferential direction between the outer coating 312 and the thread sleeve core 5 to form an inner coating 311 by matching with a thread guiding tool.
The yarn is arranged on the inner side of the fabric, and the section binding force of the metal thread sleeve 321 and the yarn can be enhanced by the pressure of the die. With further reference to fig. 9, the upper, left and right portions of the overwrap 312 are integrally constructed by a fabric, and the lower portion of the overwrap 312 is separately constructed by a fabric to facilitate extrusion of the resin. In the pultrusion structure, the central positions of the fabric and the metal threaded sleeve 321 are close to each other as much as possible, so that yarns at four corners are prevented from being extruded to other areas after being extruded.
A cross-sectional view of a blade root structure is shown in fig. 12, in which the left and right sides of the insert assemblies 3 are cut to have a minute triangular structure, so that a plurality of insert assemblies 3 can meet the radian requirement of the blade root circumference after being laid side by side in the width direction thereof. However, this approach is prone to material waste, and thus accommodates the layering design of the square insert assemblies 3 by adding a conformal spacer 4 between adjacent insert assemblies 3.
It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (3)
1. The processing method of the blade root structure of the wind power blade is characterized by being applied to processing the blade root structure of the wind power blade and comprising the following steps: the inner skin, the outer skin and the screw sleeve assembly are arranged between the inner skin and the outer skin, and the screw sleeve assembly is provided with a plurality of screw sleeve assemblies in parallel along the circumferential direction of the blade root and is integrally poured with the inner skin and the outer skin;
The screw sleeve assembly comprises a shell and an inner core arranged along the length direction of the shell, the inner core comprises a metal screw sleeve and a strip-shaped piece, an internal thread is formed at the tail end of the metal screw sleeve, and the strip-shaped piece is connected with the tail end of the metal screw sleeve;
The strip-shaped piece is of a wedge-shaped structure, a first inclined plane is arranged at one end of the strip-shaped piece far away from the metal screw sleeve, the shell is formed on the outer ring of the inner core through a pultrusion process, and a second inclined plane is arranged corresponding to the first inclined plane;
A conformal gasket is arranged between two adjacent screw sleeve assemblies, the conformal gasket is in a triangular structure, and the side surfaces of two waists of the conformal gasket are respectively attached to the two adjacent screw sleeve assemblies;
A conformal gasket is arranged between two adjacent screw sleeve components, the conformal gasket is of a T-shaped structure and comprises a horizontal part and a vertical part, the screw sleeve components are positioned on the horizontal part, and the vertical part is of a triangular structure and is positioned between the two adjacent screw sleeve components;
the housing includes an inner cladding and an outer cladding;
The inner cladding comprises a plurality of layers of fabrics wound on the outer ring of the inner core, and the outer cladding is formed at four corners of the outer ring of the inner cladding through yarn pultrusion;
The method comprises the following steps:
Splicing the screw sleeve core materials and continuously producing screw sleeve sectional materials through a pultrusion process;
Cutting the screw sleeve section bar to obtain the screw sleeve assembly;
Paving an outer skin, a screw sleeve assembly and an inner skin in a blade root mould, and integrally pouring and forming;
In the splicing process of the screw sleeve core material, two metal screw sleeves are connected through stud bolts to form a screw sleeve unit, a hard rubber gasket is arranged between the two metal screw sleeves, any end of the screw sleeve unit is connected with a core material rod, and the screw sleeve unit and the core material rod are connected through penetration to form a continuous screw sleeve core material;
Clamping the screw sleeve core material on a pultrusion production line, continuously conveying reinforcing fibers along the pultrusion direction, continuously forming screw sleeve sectional materials by matching with a pultrusion die, carrying out online nondestructive scanning on the screw sleeve sectional materials, and determining a first cutting line and a second cutting line at the positions of the core material rod and the hard rubber gasket;
and obliquely cutting the screw sleeve section along the first cutting line and continuously obtaining section units, and carrying out circular cutting on the section units along the second cutting line to obtain two screw sleeve assemblies.
2. The method for machining a blade root structure of a wind power blade according to claim 1, wherein a tenon portion is arranged at one end of the strip-shaped piece, which is far away from the first inclined surface, and the tenon portion is in interference fit with the tail end of the metal screw sleeve and is fixedly connected through structural adhesive.
3. The method for processing the blade root structure of the wind power blade according to claim 1, wherein in the pultrusion process of the screw sleeve profile, a plurality of layers of fabrics are wound on the outer ring of the screw sleeve core material through a cloth guiding tool to form an inner cladding, and yarns are adopted and matched with a pultrusion die to form an outer cladding in a pultrusion mode at four corners of the outer ring of the fabrics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410906631.3A CN118438699B (en) | 2024-07-08 | 2024-07-08 | Processing method of blade root structure of wind power blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410906631.3A CN118438699B (en) | 2024-07-08 | 2024-07-08 | Processing method of blade root structure of wind power blade |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN118438699A CN118438699A (en) | 2024-08-06 |
| CN118438699B true CN118438699B (en) | 2024-09-17 |
Family
ID=92328606
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410906631.3A Active CN118438699B (en) | 2024-07-08 | 2024-07-08 | Processing method of blade root structure of wind power blade |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN118438699B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118664930A (en) * | 2024-08-20 | 2024-09-20 | 新创碳谷集团有限公司 | Wind-powered electricity generation blade root pultrusion structure and pultrusion piece |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103909662A (en) * | 2014-04-28 | 2014-07-09 | 连云港中复连众复合材料集团有限公司 | Method for manufacturing embedded bolt sleeve at root of fan blade by pultrusion process |
| CN111684155A (en) * | 2017-12-08 | 2020-09-18 | 维斯塔斯风力系统有限公司 | Insert for a wind turbine blade root |
| CN113202689A (en) * | 2021-06-11 | 2021-08-03 | 三一重能股份有限公司 | Prefabricated blade root structure, production method thereof and wind power blade |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2915791B2 (en) * | 1994-06-14 | 1999-07-05 | 株式会社コンセック | Plunge cutter and cutting method |
| DE10237909B4 (en) * | 2002-08-14 | 2007-08-16 | Stimpfl & Gieseler Gmbh | Device for severing the connection between two sausages |
| CN205503695U (en) * | 2016-01-05 | 2016-08-24 | 中复碳芯电缆科技有限公司 | Aerogenerator is pre -buried blade root connecting piece of pultrusion for blade |
| CN107344422B (en) * | 2017-08-10 | 2020-02-28 | 中材科技风电叶片股份有限公司 | Production method of light blade root structure of wind power blade |
| US11541576B1 (en) * | 2021-09-17 | 2023-01-03 | Blended Wing Aircraft, Inc. | Systems and methods for manufacture of a modular aircraft |
| CN219492457U (en) * | 2023-03-21 | 2023-08-08 | 三一重能股份有限公司 | Blunt trailing edge blade and wind generating set |
-
2024
- 2024-07-08 CN CN202410906631.3A patent/CN118438699B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103909662A (en) * | 2014-04-28 | 2014-07-09 | 连云港中复连众复合材料集团有限公司 | Method for manufacturing embedded bolt sleeve at root of fan blade by pultrusion process |
| CN111684155A (en) * | 2017-12-08 | 2020-09-18 | 维斯塔斯风力系统有限公司 | Insert for a wind turbine blade root |
| CN113202689A (en) * | 2021-06-11 | 2021-08-03 | 三一重能股份有限公司 | Prefabricated blade root structure, production method thereof and wind power blade |
Also Published As
| Publication number | Publication date |
|---|---|
| CN118438699A (en) | 2024-08-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2621715B1 (en) | Method of manufacturing a wind turbine blade and a wind turbine blade | |
| CN111684155B (en) | Insert for a wind turbine blade root | |
| EP1417409B1 (en) | Wind turbine blade | |
| CN103153592B (en) | Method for producing an elongate composite structure | |
| CN118438699B (en) | Processing method of blade root structure of wind power blade | |
| CN102066094B (en) | Method for making structural component of organic matrix composite material and component thereof | |
| EP3501808B1 (en) | A pre-formed spar cap assembly for embedding in a wind turbine rotor blade | |
| CN111022248B (en) | Prefabricated part of wind power blade root, blade root part, blade and manufacturing method thereof | |
| CN118008678B (en) | Pre-buried insert assembly, forming method and blade root pre-buried connection structure | |
| CN105464898A (en) | Rotor blade structure of wind turbine and preparation method of rotor blade structure | |
| CN103909662B (en) | A kind of method of the root of fan blade pre-embedded bolt cover adopting pultrude process to manufacture | |
| EP3966446B1 (en) | Method and system of manufacturing a wind turbine blade | |
| CN113165282B (en) | Improvements relating to wind turbine blade manufacture | |
| CN103953196B (en) | A kind of concrete pump truck arm composite joint | |
| CN111169041B (en) | Wind turbine blade root component production method and mold | |
| CN211467555U (en) | Mould is used in modularization production of wind-powered electricity generation blade root | |
| CN113165281B (en) | Improvements relating to wind turbine blade manufacture | |
| CN118438700B (en) | Pultrusion processing method for blade root screw sleeve component of wind power blade | |
| CN114729621A (en) | Root bushing, bushing insert therefor, wind turbine blade comprising such a root bushing and method for manufacturing such a root bushing | |
| CN222946262U (en) | A wind turbine blade root screw sleeve prefabricated pultrusion structure | |
| CN222933396U (en) | A wind turbine blade pultrusion root screw sleeve mandrel structure | |
| CN118493897B (en) | Winding and forming method for blade root bolt sleeve | |
| CN116972054A (en) | Composite rod and preparation method thereof | |
| CN106688318B (en) | Composite material spar three-dimensional laying forming method | |
| GB2636112A (en) | Shear webs |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |