CN110733188A - wind power blade trailing edge vertical surface area filling method - Google Patents
wind power blade trailing edge vertical surface area filling method Download PDFInfo
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- CN110733188A CN110733188A CN201911161697.XA CN201911161697A CN110733188A CN 110733188 A CN110733188 A CN 110733188A CN 201911161697 A CN201911161697 A CN 201911161697A CN 110733188 A CN110733188 A CN 110733188A
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- Prior art keywords
- shell
- filling method
- casing
- mould
- groove
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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
- B29C70/34—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
- B29C70/342—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 using isostatic pressure
-
- 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
- B29C70/42—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles
- B29C70/44—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles using isostatic pressure, e.g. pressure difference-moulding, vacuum bag-moulding, autoclave-moulding or expanding rubber-moulding
- B29C70/443—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles using isostatic pressure, e.g. pressure difference-moulding, vacuum bag-moulding, autoclave-moulding or expanding rubber-moulding and impregnating by vacuum or injection
-
- 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
- B29C70/541—Positioning reinforcements in a mould, e.g. using clamping means for the reinforcement
-
- 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
- B29C70/542—Placing or positioning the reinforcement in a covering or packaging element before or during moulding, e.g. drawing in a sleeve
-
- 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
Abstract
The invention discloses a wind power blade trailing edge vertical surface area filling method which comprises the following steps of paving a coating layer on the corresponding position of an SS surface and a PS surface casing trailing edge vertical surface before paving a casing outer skin, paving a plurality of cushion blocks at a mould groove, filling the rear edge groove and tightly adhering the rear edge groove to the mould groove vertical surface, sequentially paving a casing outer skin, one-way cloth, a casing core material and a casing inner skin to complete the whole casing paving process, performing auxiliary material paving, vacuum infusion and precuring, auxiliary material cleaning, trial mould assembly and mould closing glue scraping process treatment, turning over mould closing, and adhering and fixing the SS surface casing and the PS surface casing to through mould closing glue.
Description
Technical Field
The invention relates to the field of wind power blade structures, in particular to a method for filling wind power blade trailing edge elevation areas.
Background
The middle part of the rear edge of the wind power blade is a vertical surface with fixed thickness, the vertical surface is embodied as a groove on a die, in the area, the gap of a cavity in the blade is large, and the position of part of the cavity exceeds the theoretical mold closing gap.
In order to adjust the mold closing gap, at present glass fiber cloth is used for filling or manufacturing a bonding angle, if the area is filled with the glass fiber cloth, the layer spreading and pouring are difficult in the aspect, the defects of folds, dry fibers and the like are easy to occur, the bonding quality and the production efficiency are affected, in addition, the problem that the blade is overweight and the like is easily caused in the aspect, the mechanical property of the rear edge of the blade is changed, if the bonding angle is manufactured, the manufacturing process is complex in the aspect and is not easy to form due to the narrow and flat cavity structure and the narrow space, and in addition, the bonding angle is easy to fold and collapse in the aspect, and rework is needed.
Meanwhile, the groove is formed in the area on the mold, the glass fiber cloth of the shell is easy to suspend when the glass fiber cloth is paved in layers, and resin is rich after vacuum infusion, so that the mechanical property of the blade is reduced, and the strength and the service life of the blade are influenced.
Disclosure of Invention
The invention aims to provide wind power blade trailing edge vertical face area filling methods which are simple in structure and convenient to operate.
In order to achieve the purpose, the specific technical scheme of the wind power blade trailing edge vertical surface area filling method is as follows:
method for filling the rear edge elevation area of wind-power blade includes such steps as spreading the covering layer on the SS surface and PS surface of casing, spreading multiple pads in the mould, filling the recesses, sticking them tightly, spreading the covering layer, unidirectional cloth, core material, and internal covering layer, spreading auxiliary material, vacuum pouring, pre-solidifying, cleaning, trial closing, scraping, turning, closing, and adhering the SS and PS surface casings to .
And , spreading two layers of biaxial cloth on the surface of the die groove on the vertical surface of the trailing edge of the blade.
And , when the coating layers are laid, the sides of the two layers of biaxial cloth exceed the flanging of the parting line in the chord direction, and the distance between the side and the parting line of the rear edge is wider than the width of the cushion block.
And , the distance between the other side of the two layers of biaxial cloth and the parting line of the rear edge is respectively 9.5-10.5 cm more and 4.5-5.5 cm more than the width of the cushion block.
And , paving the two glass fiber cloth layers in a big-to-small sequence, and tightly adhering the glass fiber cloth to the surface of the mold.
And , fixedly connecting the plurality of cushion blocks with by using resin nails.
The wind power blade trailing edge vertical face area filling method has the advantages that:
1) the structure design is simple and reasonable, the operation is convenient and fast, and the production efficiency is high;
2) the phenomenon that the glass fiber cloth is suspended at the position during layer laying is avoided, so that the defect of rich resin is eliminated, and the quality of the blade is improved;
3) the mold closing gap of the vertical surface area of the trailing edge of the blade can be effectively adjusted, the problem of thickness over-tolerance of the area is solved, and the bonding strength is improved;
4) the amount of mold closing glue is reduced, the weight of the blade is reduced, the pneumatic performance of the trailing edge of the blade is improved, the strength of the blade is increased, and the service life of the blade is prolonged.
Drawings
Fig. 1 is a sectional view of the filling structure of the invention in a wind turbine blade.
In the figure: 1. cushion blocks; 2. a coating layer; 3. a shell outer skin; 4. unidirectional cloth; 5. a shell core material; 6. covering the shell inner skin; 7. and (5) molding glue.
Detailed Description
For better understanding of the purpose, structure and function of the present invention, the following will describe in detail the wind turbine blade trailing edge elevation region filling method with reference to the accompanying drawings.
As shown in fig. 1, it is an wind turbine blade trailing edge elevation area filling method of the invention, used for adjusting the mold closing gap of the blade trailing edge elevation area, the filling method includes:
firstly, before laying the shell outer skin 3, laying a coating layer 2 at a corresponding position of the SS surface and/or the PS surface shell rear edge vertical surface.
Specifically, the coating layer 2 is two layers of biaxial cloth, and is laid on the surface of a mold groove at the vertical surface of the rear edge of the blade to coat a cushion block 1 to be described later, when the coating layer is laid, the sides of the two layers of biaxial cloth exceed the flanging of a parting line in the chord direction, the distance between the side and the parting line of the rear edge is wider than the width of the cushion block 1, preferably, the distances between the two layers of biaxial cloth and the parting line of the rear edge are respectively 9.5-10.5 cm (preferably 10cm) more and 4.5-5.5 cm (preferably 5cm) more than the width of the cushion block 1, the coating layer 2 of the two layers of glass fiber cloth is laid in the order of first large and second small, the glass fiber cloth is tightly attached to the mold surface to ensure that the two layers of biaxial cloth are flat and have no.
And , paving a plurality of cushion blocks 1 at the positions of the mould grooves, filling and leveling the rear edge grooves, and tightly adhering parts with the vertical surfaces of the mould grooves.
Specifically, the cushion block 1 and the cladding layer 2 form a filling structure of a trailing edge elevation area of the blade, the filling structure is used for controlling a trailing edge mold closing gap and a glue scraping thickness, resin enrichment can be prevented through the operation of the method, the quality of the blade is improved, in addition, the plurality of cushion blocks 1 are fixedly connected to through resin nails, and deviation is prevented, wherein, the cushion blocks 1 preferably adopt PVC foam core materials for manufacturing the blade, but not only the PVC foam core materials are adopted, the cushion blocks 1 are designed according to theoretical trailing edge sections, the actual size of the cushion blocks 1 is adjusted according to the mold closing gap of trial molds, and the cushion blocks 1 can be filled only on the side of the mold with grooves at the positions with small mold closing gap.
And , laying the shell outer skin 3, the unidirectional cloth 4, the shell core material 5, the shell inner skin 6 and the like in sequence according to the process, and finishing the whole shell laying process.
, according to the manufacturing process of the blade, the procedures of auxiliary material laying, vacuum infusion and pre-curing, auxiliary material cleaning, trial mold closing, mold closing glue blade coating and the like are carried out.
And , turning over and closing the mold, wherein the mold closing glue 7 is used for bonding the SS surface shell and the PS surface shell to , the thickness of the mold closing glue meets the design requirement, and the bonding strength is improved.
It should be noted that the present invention is exemplified by placing the spacers 1 on both surfaces, but the present invention is not limited to the above-mentioned solution.
The method for filling the rear edge vertical face area of the wind power blade is simple and reasonable in structural design, convenient to operate and high in production efficiency, avoids the phenomenon that glass fiber cloth is suspended at the position when the blade is paved in a layer mode, eliminates the defect of rich resin, improves the quality of the blade, can effectively adjust the die assembly gap of the rear edge vertical face area of the blade, eliminates the problem of the thickness over-tolerance of the area, improves the bonding strength, reduces the using amount of die assembly glue, reduces the weight of the blade, improves the pneumatic performance of the rear edge of the blade, increases the strength of the blade and prolongs the service life.
, it should be understood that the detailed description herein should not be construed as limiting the spirit and scope of the invention, and that various modifications to the above-described embodiments, which would occur to persons skilled in the art upon reading this description, are within the scope of the invention.
Claims (6)
1, wind power blade trailing edge elevation area filling method, characterized by comprising the following steps:
before laying the shell outer skin, laying a coating layer on the corresponding positions of the SS surface and the PS surface of the shell rear edge vertical surface;
laying a plurality of cushion blocks at the groove of the mould, filling the groove at the rear edge, and firmly attaching the cushion blocks to the vertical surface of the groove of the mould;
sequentially laying an outer shell, unidirectional cloth, a shell core material and an inner shell skin of the shell to complete the layer laying process of the whole shell;
carrying out the working procedures of laying auxiliary materials, vacuum infusion and pre-curing, cleaning the auxiliary materials, trial-matching the dies and scraping and coating die-matching glue;
and (3) turning over and clamping the dies, and adhering and fixing the SS face shell and the PS face shell to the position through die-clamping glue.
2. Filling method according to claim 1, wherein the coating (2) is two layers of biaxial cloth laid on the mould groove surface at the elevation of the trailing edge of the blade.
3. The filling method according to claim 2, wherein when the coating layer is laid, the sides of the two layers of biaxial cloth in the chordwise direction exceed the flanging of the parting line, and the distances between the other sides and the parting line of the rear edge are wider than the width of the cushion block (1).
4. The filling method according to claim 3, wherein the distance between the other side of the two layers of biaxial cloth and the parting line of the rear edge is respectively 9.5-10.5 cm more and 4.5-5.5 cm more than the width of the cushion block (1).
5. The filling method according to claim 3, wherein two glass fiber cloth covering layers (2) are adopted and laid in a big-to-small order, and the glass fiber cloth is tightly attached to the surface of the mold.
6. The filling method according to claim 1, wherein the plurality of spacers (1) are fixedly connected to by resin nails.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911161697.XA CN110733188A (en) | 2019-11-22 | 2019-11-22 | wind power blade trailing edge vertical surface area filling method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911161697.XA CN110733188A (en) | 2019-11-22 | 2019-11-22 | wind power blade trailing edge vertical surface area filling method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110733188A true CN110733188A (en) | 2020-01-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911161697.XA Pending CN110733188A (en) | 2019-11-22 | 2019-11-22 | wind power blade trailing edge vertical surface area filling method |
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| Country | Link |
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| CN (1) | CN110733188A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113071116A (en) * | 2021-04-22 | 2021-07-06 | 上海电气风电集团股份有限公司 | Production method of prefabricated auxiliary beam with core material for wind turbine blade |
| EP4074493A1 (en) * | 2021-04-12 | 2022-10-19 | LM Wind Power A/S | Method of forming a wind turbine rotor blade |
-
2019
- 2019-11-22 CN CN201911161697.XA patent/CN110733188A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4074493A1 (en) * | 2021-04-12 | 2022-10-19 | LM Wind Power A/S | Method of forming a wind turbine rotor blade |
| WO2022218904A1 (en) * | 2021-04-12 | 2022-10-20 | Lm Wind Power A/S | Method of forming a wind turbine rotor blade |
| CN113071116A (en) * | 2021-04-22 | 2021-07-06 | 上海电气风电集团股份有限公司 | Production method of prefabricated auxiliary beam with core material for wind turbine blade |
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