CN116214952A - Manufacturing method of wind power blade trailing edge die assembly core material - Google Patents
Manufacturing method of wind power blade trailing edge die assembly core material Download PDFInfo
- Publication number
- CN116214952A CN116214952A CN202310344108.1A CN202310344108A CN116214952A CN 116214952 A CN116214952 A CN 116214952A CN 202310344108 A CN202310344108 A CN 202310344108A CN 116214952 A CN116214952 A CN 116214952A
- Authority
- CN
- China
- Prior art keywords
- die
- shell
- core material
- cover plate
- cavity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
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
- B29C69/00—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore
- B29C69/001—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore a shaping technique combined with cutting, e.g. in parts or slices combined with rearranging and joining the cut 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
- B29C70/30—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
- 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 provides a manufacturing method of a wind power blade trailing edge die-closing core material, which comprises the following steps: prefabricating a PS shell and an SS shell of the blade, sequentially paving demolding cloth and wrapping cloth in the PS shell and the SS shell respectively, and pouring and solidifying; 2: coating an adhesive on the rear edge die assembly core material area of the SS shell; 3: arranging a rubber gasket at the rear edge bonding area of the PS shell, aligning and extruding the PS shell and the SS shell, and obtaining a male die of the rear edge die closing core material after the adhesive is solidified; 4: cutting the male die into a plurality of sections, and trimming the edges of each section to ensure that the external dimension meets the design requirement; 5: paving glass fiber fabrics on the surface of a male die, then coating resin on the glass fiber fabrics, and forming a female die after the resin is solidified; 6: injecting foaming liquid into the female die for foaming, and demolding after the foaming is complete and solidification and cooling are carried out to obtain a required die assembly core material; the manufacturing method is high in production and machining efficiency, and the dimension precision of the die assembly core material is high.
Description
Technical Field
The invention relates to the technical field of sample preparation methods, in particular to a method for manufacturing a die assembly core material at the rear edge of a wind power blade.
Background
The wind power blade is one of important parts of the wind generating set and is mainly used for capturing wind energy, the wind power blade is generally formed by bonding two half pieces, namely a windward side (PS side) and a leeward side (SS side), and the bonding process of the blade is called a die assembly process. In the process of blade die assembly, the bonding area mainly comprises areas such as a front edge, a rear edge and a web plate of the blade, wherein the bonding area of the rear edge is large in bonding width, a cavity is formed in the rear edge area, the bonding area belongs to a blind bonding area, the bonding area is one of the difficulties of the blade die assembly process, the bonding area is also an important problem affecting the quality of the blade, the bonding gap between two half pieces needs to be controlled to be 2mm-10mm in the process of blade die assembly, the risk of blade top die is caused when the bonding gap is too small, the bonding strength is reduced when the bonding gap is too large, and the quality and the operation safety of the blade are affected.
At present, a trailing edge area of a blade die assembly procedure needs to be filled with a die assembly core material so as to ensure that a die assembly gap meets design requirements, wherein the design flow of the die assembly core material is to firstly extract an airfoil of the trailing edge area of the blade, then simulate layering of the trailing edge area on a section view of the airfoil, draw the outline of the die assembly core material according to the simulated layering, then process the die assembly core material, and finally apply the processed core material to blade production. However, due to the deviation between the theoretical design and the actual production and the error of the core material processing, after the primary processed trailing edge die-closing core material is applied to the blade, the situation that the dimension is unsuitable still exists, so that the die-closing gap cannot meet the requirement, the quality and the production efficiency of the blade can be influenced due to the overlarge die-closing gap and the overlarge die-closing gap, and the blade can be seriously scrapped, so that the development of a method for effectively preparing the blade die-closing core material is necessary.
Disclosure of Invention
In view of the above, the invention aims to provide a manufacturing method of a wind power blade trailing edge die-clamping core material, so as to solve the problems of inaccurate size, low efficiency and the like in the manufacturing of the wind power blade trailing edge die-clamping core material in the prior art.
In order to achieve the above purpose, the technical scheme of the invention is realized as follows:
a manufacturing method of a wind power blade trailing edge die assembly core material comprises the following steps:
step 1: prefabricating a PS shell and an SS shell of the blade, sequentially paving demolding cloth and wrapping cloth in the PS shell and the SS shell respectively, and pouring and solidifying;
step 2: coating an adhesive on the rear edge die assembly core material area of the SS shell;
step 3: arranging a rubber gasket at the rear edge bonding area of the PS shell, aligning and extruding the PS shell and the SS shell, and obtaining a male die of the rear edge die closing core material after the adhesive is solidified;
step 4: cutting the male die into a plurality of sections, and then trimming the edge of each section of male die to ensure that the external dimension of the male die meets the design requirement;
step 5: paving glass fiber fabrics on the surface of a male die, then manually pasting or vacuum pouring resin on the glass fiber fabrics, and forming a female die after the resin is solidified, wherein the female die comprises a cavity and a cover plate;
step 6: covering a cover plate on the cavity, injecting foaming liquid into the female die for foaming after the cavity and the cover plate are firmly fixed, and demoulding after the foaming liquid is completely foamed, so as to obtain the required trailing edge die closing core material;
wherein PS is windward, SS is leeward.
The manufacturing method of the wind power blade trailing edge die-closing core material is simple to operate, production and machining efficiency can be improved, the manufactured trailing edge die-closing core material is high in size precision, and product quality and installation precision can be improved.
Further, in the step 3, the thickness of the rubber gasket is H1, and H1 is more than or equal to 4.5mm and less than or equal to 5.5mm.
The setting can reserve the coating thickness of gluing agent, when installing the trailing edge compound die core material in the casing, can avoid PS casing and SS casing between the improper and unable close laminating of tolerance, can also adjust compound die clearance through changing the thickness of rubber gasket, the production of convenient installation.
Further, in step 4, the length of each male die is H2, and H2 is more than or equal to 0.8m and less than or equal to 1.2m.
The setting is convenient for repair, transport and assembly to the male mould, has improved production machining efficiency.
Further, in step 6, the cavity and the edge of the cover plate are provided with anti-overflow grooves, the anti-overflow grooves comprise a first anti-overflow groove and a second anti-overflow groove, and the anti-overflow grooves are used for preventing leakage to the outside of the female die when foaming liquid is foamed.
The structure is convenient for discharging foaming gas in the female die and can prevent foaming foam from leaking to the outer part of the female die.
Further, in the step 6, a gap between the cavity and the cover plate at the anti-counterfeiting groove is H3, and H3 is smaller than 1mm.
The structure can ensure the dimensional accuracy of the rear edge die-closing core material and is convenient for discharging foaming gas in the female die.
Further, in step 6, the cover plate is provided with a glue injection port, and the glue injection port is used for injecting foaming liquid into the female die.
This structure facilitates the injection of foaming liquid into the female mold.
Further, in step 6, the amount of foaming liquid is calculated from the volume of the female mold.
The method can effectively regulate and control the density of the rear edge die-closing core material, can also regulate the weight and mechanical property of the rear edge die-closing core material, can control the weight of the blade, and can realize the design regulation and control of the rear edge die-closing core material.
Further, in step 6, the thickness of the cavity and the cover plate is H4, and H4 is more than 5cm.
The arrangement can ensure the strength of the cavity and the cover plate, and avoid deformation in the foaming process, thereby influencing the quality of the rear edge die assembly core material.
Further, in step 6, the cavity and the cover plate are fixed together by screws or F-clamps.
The arrangement is convenient for assembly production and reduces cost.
Furthermore, the cavity and the cover plate are made of glass fiber reinforced plastic.
The arrangement can improve the strength of the cavity and the cover plate, reduce the weight and facilitate the transportation, the production and the manufacture.
Compared with the prior art, the manufacturing method of the wind power blade trailing edge die closing core material has the following advantages:
1. the operation is simple, and the production and processing efficiency can be improved;
2. the prepared trailing edge die-closing core material has high dimensional accuracy, and can improve the product quality and the installation accuracy.
Drawings
FIG. 1 is a schematic structural view of a wind turbine blade according to an embodiment of the present invention;
FIG. 2 is a schematic view of a partial enlarged structure at A in FIG. 1;
fig. 3 is a schematic structural view of the female mold according to the embodiment.
Reference numerals illustrate:
11. a PS housing; 12. an SS housing; 2. wrapping cloth; 3. a female die; 31. a cavity; 32. a cover plate; 320. a glue injection port; 4. closing the die core material at the rear edge; 5. an anti-counterfeiting groove; 51. a first anti-counterfeiting groove; 52. a second anti-counterfeiting groove; 100. a trailing edge bonding region; 200. and (3) an adhesive.
Detailed Description
In order that the above objects, features and advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.
Example 1
As shown in fig. 1 to 3, a method for manufacturing a mold closing core material for a trailing edge of a wind power blade comprises the following steps:
step 1: prefabricating a PS shell 11 and an SS shell 12 of the blade, sequentially paving demolding cloth and wrapping cloth 2 in the PS shell 11 and the SS shell 12 respectively, and pouring and solidifying;
step 2: coating an adhesive 200 on the rear edge die core material area 4 of the SS shell 12;
step 3: arranging a rubber gasket at the rear edge bonding area 100 of the PS shell 11, aligning and extruding the PS shell 11 and the SS shell 12, and obtaining a male die of the rear edge die-clamping core material 4 after the adhesive 200 is solidified;
step 4: cutting the male die into a plurality of sections, and then trimming the edge of each section of male die to ensure that the external dimension of the male die meets the design requirement;
step 5: paving glass fiber fabrics on the surface of a male die, then manually pasting or vacuum pouring resin on the glass fiber fabrics, and forming a female die 3 after the resin is solidified, wherein the female die 3 comprises a cavity 31 and a cover plate 32;
step 6: covering a cover plate 32 on the cavity 31, injecting foaming liquid into the female die 3 for foaming after the cavity 31 and the cover plate 32 are firmly fixed, and demolding after solidification and cooling are performed after the foaming liquid is completely foamed, so as to obtain the required trailing edge die closing core material 4;
wherein PS is windward, SS is leeward.
According to the manufacturing method of the wind power blade trailing edge die-closing core material, the adhesive 200 is coated in the blade shell, the male die of the trailing edge die-closing core material along with the shape is pressed, the glass fiber fabric and the resin are paved on the surface of the male die to prepare the female die 3, and the foaming liquid is injected into the female die 3 to prepare the required trailing edge die-closing core material 4.
As a preferred example of the present invention, in step 2, an excess amount of adhesive 200 is applied to the trailing edge bonding region 100 of the PS shell 11.
In particular, the method can ensure the dimensional accuracy of the pressed male die and avoid the surface of the male die from being concave.
As a preferred example of the present invention, in step 3, the thickness of the rubber gasket is H1,4.5 mm.ltoreq.H2.ltoreq.5.5 mm.
Specifically, this kind of setting can reserve the coating thickness of gluing agent, when installing trailing edge compound die core 4 in the casing, can avoid PS casing 11 and SS casing 12 between the improper and unable close laminating of tolerance, can also adjust the compound die clearance through changing the thickness of rubber gasket, convenient installation production.
As a preferred example of the present invention, in step 4, the length of each male die is H2,0.8 m.ltoreq.H2.ltoreq.1.2 m.
In particular, the setting is convenient for shaping, carrying and assembling the male die, and improves the production and processing efficiency.
As a preferred example of the present invention, in step 6, the edges of the cavity 31 and the cover plate 32 are provided with anti-counterfeit grooves 5, the anti-counterfeit grooves 5 including a first anti-counterfeit groove 51 and a second anti-counterfeit groove 52, the anti-counterfeit grooves 5 being used to prevent leakage to the outside of the female mold 3 when foaming liquid is foamed.
In particular, this structure facilitates both the discharge of the foaming gas in the female mold 3 and the prevention of the leakage of the foaming foam to the outside of the female mold 3.
As a preferred example of the present invention, in step 6, the gap between the cavity 31 and the cover plate 32 at the anti-overflow groove 5 is H3, H3 < 1mm.
Specifically, this structure can ensure the dimensional accuracy of the trailing edge mold-closing core material 4 and also facilitate the discharge of the foaming gas in the female mold 3.
As a preferred example of the present invention, in step 6, the cover plate 32 is provided with a glue injection port 320, and the glue injection port 320 is used for injecting the foaming liquid into the female mold 3.
In particular, this structure facilitates the injection of foaming liquid into the female mold 3.
Preferably, a rubber plug is arranged on the glue injection port 320 and is used for plugging the glue injection port 320, so that the foaming foam is prevented from leaking to the outside of the female mold 3 from the glue injection port 320.
As a preferred example of the present invention, in step 6, the amount of foaming liquid is calculated from the volume of the female mold 3.
Specifically, the method can effectively regulate and control the density of the rear edge mold closing core material 4, can also regulate the weight and mechanical property of the rear edge mold closing core material 4, can control the weight of the blade, and can realize the design regulation and control of the rear edge mold closing core material 4.
As a preferred example of the present invention, in step 6, the thickness of the cavity 31 and the cover plate 32 is H4, and H4 > 5cm.
In particular, this arrangement ensures the strength of the cavity 31 and the cover plate 32, avoiding deformation during foaming, affecting the quality of the trailing edge clamp core 4.
As a preferred example of the present invention, in step 6, the cavity 31 and the cover plate 32 are fixed together by screws or F-clips.
In particular, the arrangement is convenient for assembly production, and reduces cost.
Preferably, the anti-counterfeiting groove 5 is provided with a fixing position for installing a screw or an F clip.
As a preferred example of the present invention, the cavity 31 and the cover plate 32 are made of glass fiber reinforced plastic.
In particular, this arrangement can improve the strength of the cavity 31 and the cover plate 32, reduce the weight, and facilitate handling and manufacturing.
In summary, the manufacturing method of the wind power blade trailing edge mold closing core material has the following advantages: firstly, a male die of a trailing edge die-closing core material with a shape is pressed by coating an adhesive 200 in a blade shell, a glass fiber fabric and resin are paved on the surface of the male die to prepare a female die 3, foaming liquid is injected into the female die 3 to prepare a required trailing edge die-closing core material 4, the operation is simple, the production and processing efficiency can be improved, and the prepared trailing edge die-closing core material 4 has high dimensional precision and can improve the product quality and the installation precision; secondly, the consumption of foaming liquid is calculated according to the volume of the female die 3, so that the density of the rear edge die closing core material 4 can be controlled to meet the design requirement, and the cost can be saved; thirdly, through being provided with anti-overflow groove 5 at die cavity 31 and apron 32 edge, both be convenient for discharge the foaming gas in the female die 3, improve the manufacturing accuracy of trailing edge compound die core 4, also can avoid the foaming foam to reveal to the outside of female die 3.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the invention, and the scope of the invention should be assessed accordingly to that of the appended claims.
Claims (10)
1. The manufacturing method of the wind power blade trailing edge die assembly core material is characterized by comprising the following steps of:
step 1: prefabricating a PS shell (11) and an SS shell (12) of the blade, sequentially paving demolding cloth and wrapping cloth (2) in the PS shell (11) and the SS shell (12) respectively, and pouring and solidifying;
step 2: coating an adhesive (200) on a rear edge die core material area (4) of the SS shell (12);
step 3: arranging a rubber gasket at a rear edge bonding area (100) of the PS shell (11), aligning and extruding the PS shell (11) and the SS shell (12), and obtaining a male die of the rear edge die closing core material (4) after the adhesive (200) is solidified;
step 4: cutting the male die into a plurality of sections, and then trimming the edge of each section of male die to ensure that the external dimension of the male die meets the design requirement;
step 5: paving glass fiber fabrics on the surface of a male die, then manually pasting or vacuum pouring resin on the glass fiber fabrics, and forming a female die (3) after the resin is solidified, wherein the female die (3) comprises a cavity (31) and a cover plate (32);
step 6: covering a cover plate (32) on the cavity (31), injecting foaming liquid into the female die (3) for foaming after the cavity (31) and the cover plate (32) are firmly fixed, and demolding after the foaming liquid is completely foamed, so as to obtain the required rear edge die closing core material (4);
wherein PS is windward, SS is leeward.
2. The method according to claim 1, wherein in the step 3, the thickness of the rubber gasket is H1, and H1 is 4.5 mm.ltoreq.H1.ltoreq.5.5 mm.
3. The method according to claim 1, wherein in the step 4, the length of each male die is H2, and H2 is 0.8 m.ltoreq.H2.ltoreq.1.2 m.
4. The manufacturing method according to claim 1, characterized in that in step 6, the edges of the cavity (31) and the cover plate (32) are provided with anti-overflow grooves (5), the anti-overflow grooves (5) comprise a first anti-overflow groove (51) and a second anti-overflow groove (52), and the anti-overflow grooves (5) are used for preventing leakage of foaming liquid to the outside of the female die (3).
5. The manufacturing method according to claim 4, wherein in step 6, the gap between the cavity (31) and the cover plate (32) at the anti-overflow groove (5) is H3, and H3 is less than 1mm.
6. The manufacturing method according to claim 1, wherein in step 6, the cover plate (32) is provided with a glue injection port (320), and the glue injection port (320) is used for injecting foaming liquid into the female mold (3).
7. The method according to claim 1, characterized in that in step 6 the amount of foaming liquid is calculated from the volume of the female mould (3).
8. The method according to claim 1, wherein in step 6, the thickness of the cavity (31) and the cover plate (32) is H4, H4 > 5cm.
9. The method of manufacturing according to claim 1, characterized in that in step 6, the cavity (31) and the cover plate (32) are fixed together by screws or F-clamps.
10. The manufacturing method according to claim 1, characterized in that the cavity (31) and the cover plate (32) are made of glass fibre reinforced plastic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310344108.1A CN116214952A (en) | 2023-04-03 | 2023-04-03 | Manufacturing method of wind power blade trailing edge die assembly core material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310344108.1A CN116214952A (en) | 2023-04-03 | 2023-04-03 | Manufacturing method of wind power blade trailing edge die assembly core material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116214952A true CN116214952A (en) | 2023-06-06 |
Family
ID=86591302
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310344108.1A Pending CN116214952A (en) | 2023-04-03 | 2023-04-03 | Manufacturing method of wind power blade trailing edge die assembly core material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116214952A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117390721A (en) * | 2023-12-11 | 2024-01-12 | 东方电气（天津）风电叶片工程有限公司 | Method for generating trailing edge blind core-sticking material model |
-
2023
- 2023-04-03 CN CN202310344108.1A patent/CN116214952A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117390721A (en) * | 2023-12-11 | 2024-01-12 | 东方电气（天津）风电叶片工程有限公司 | Method for generating trailing edge blind core-sticking material model |
| CN117390721B (en) * | 2023-12-11 | 2024-04-16 | 东方电气（天津）风电叶片工程有限公司 | Method for generating trailing edge blind core-sticking material model |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107199714B (en) | A kind of variable curvature Composite Material Stiffened Panel moulding technique of co-curing | |
| CN109109341B (en) | Preparation method of wind power blade | |
| CN107253334B (en) | Die and process for forming T-shaped stringer stiffened wallboard made of composite material | |
| CN116214952A (en) | Manufacturing method of wind power blade trailing edge die assembly core material | |
| CN110103487B (en) | Process method for forming composite material part with Z-shaped section | |
| CN112590247A (en) | Method for integrally forming C-sandwich flat radome | |
| CN105034403A (en) | Method for manufacturing composite shell | |
| CN105346105B (en) | The making mould and preparation method of a kind of wind electricity blade | |
| CN103419376A (en) | Method for making a wind turbine rotor blade half shell or wind turbine rotor blade and production mold therefor | |
| CN105128358A (en) | Manufacturing method for wind power blade | |
| CN208247512U (en) | Composite material drum Material Stiffened Panel solidifying and molding device | |
| CN106739011A (en) | A kind of hot compression molding mould for preparing different-thickness hat front longitudinal and preparation method thereof | |
| CN111561419A (en) | Design method for filling core material at rear edge of wind power blade | |
| CN109551789A (en) | A kind of preparation method that stickup angle is supported with polyurethane of blade of MW class wind turbine | |
| CN109203516B (en) | Manufacturing method of wind power blade | |
| CN113977984A (en) | Preparation method of tubular double-curved-surface composite material structural member | |
| CN207359672U (en) | A kind of hot compression molding mould for preparing different-thickness hat shape front longitudinal | |
| CN112549581A (en) | Composite material rib forming die and forming method | |
| CN105365143A (en) | On-line foam forming method for composite material sandwich structure | |
| CN110978567A (en) | Structure function integrated composite material wing and integral forming method thereof | |
| CN114379113B (en) | I-beam forming die and forming process | |
| CN112606380B (en) | Method for forming thermal protection layer of spray pipe | |
| CN115027076A (en) | Manufacturing method of wind power blade bonding angle die | |
| CN110725775A (en) | Integrally-formed wind driven generator blade and manufacturing method thereof | |
| CN110948911A (en) | Forming method of grid structure composite material component |
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 |