CN112848392A - Blade web fills and assists material structure - Google Patents
Blade web fills and assists material structure Download PDFInfo
- Publication number
- CN112848392A CN112848392A CN202110307961.7A CN202110307961A CN112848392A CN 112848392 A CN112848392 A CN 112848392A CN 202110307961 A CN202110307961 A CN 202110307961A CN 112848392 A CN112848392 A CN 112848392A
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- web
- flow guide
- laid
- auxiliary material
- web plate
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
- B29C70/36—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and impregnating by casting, e.g. vacuum casting
-
- 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
- B29C70/546—Measures for feeding or distributing the matrix material in the reinforcing structure
- B29C70/547—Measures for feeding or distributing the matrix material in the reinforcing structure using channels or porous distribution layers incorporated in or associated with the product
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/08—Blades for rotors, stators, fans, turbines or the like, e.g. screw propellers
- B29L2031/082—Blades, e.g. for helicopters
- B29L2031/085—Wind turbine blades
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Composite Materials (AREA)
- Mechanical Engineering (AREA)
- Road Paving Structures (AREA)
Abstract
The invention discloses a blade web perfusion auxiliary material structure, which comprises: the first demolding cloth is laid on the main bonding surface of the web plate mold and the web plate reinforcing position; the web plate main structure is laid on the web plate die; the second demoulding cloth, the composite flow guide net and the flow guide pipeline are laid on the web plate main structure, the second demoulding cloth is laid at the position where the web plate connecting rod is bonded, the composite flow guide net is the composite of the flow guide net and the isolating film and is symmetrically laid by using the center line of the web plate, and the section of the flow guide pipeline is in a shape of'
"shape, laying along the central line of web; and the air exhaust system comprises air exhaust ports arranged on two sides of the web plate die, and the blade web plate perfusion auxiliary material structure is sealed through a vacuum bag film. According to the inventionThe structure for pouring the auxiliary material into the web of the blade has the advantages of small consumption of the auxiliary material, low cost of the auxiliary material of the web, short time for cleaning the auxiliary material, less generated garbage and positive effect on environmental protection; the problems of indentation on the surface of the web and scorching of the core material are solved; and meanwhile, the production efficiency of the web plate is improved.
Description
Technical Field
The invention relates to the field of wind power blades, in particular to a blade web pouring auxiliary material structure.
Background
The wind power blade is formed by assembling and bonding a PS surface shell, an SS surface shell and a web plate by using a mold-assembling adhesive, the web plate is of a sandwich structure, namely a foam core material is arranged in the middle of the web plate, and glass fiber skins are laid on the upper surface and the lower surface of the web plate.
The current mainstream forming process of the web is vacuum infusion, after the main structural layer of the web is paved, the auxiliary material comprises demolding cloth, a flow guide net, a flow guide pipeline, a vacuum bag film, an air exhaust system and the like, the demolding cloth provides a rough and clean operation surface for subsequent processes, the flow guide net assists the resin to flow on the surface of the web, the resin is guided to form a resin flow channel on the surface of the web during the flow guide pipeline, and the vacuum bag film enables the whole web paving part and the flow guide system to be isolated from the outer side and to be in a vacuum state.
The auxiliary material arrangement and injection structure of the web is changed from an initial central line injection structure into a current main single-side injection structure, the single-side injection structure has the conditions that the auxiliary material arrangement and cleaning time of the web is long, the injection time is long, and the cost of the auxiliary material is high, the central line injection structure has the conditions that a diversion pipeline leaves an indentation on the surface of the web, and the residual resin of the diversion pipeline is burnt due to the accumulation of reaction heat in the heating and curing process.
In order to solve the above problems and improve the production efficiency of the web, it is necessary to develop a pouring auxiliary material structure which can reduce the amount of auxiliary materials for the web, reduce the cost of the auxiliary materials for the web, and solve the problems of indentation on the surface of the web and scorching of the core material.
Disclosure of Invention
The invention aims to provide a blade web pouring auxiliary material structure which is small in auxiliary material consumption and high in production efficiency of webs.
In order to achieve the purpose, the specific technical scheme of the pouring auxiliary material structure for the web plate of the blade is as follows:
a blade web perfusion aid structure, comprising: the first demolding cloth is laid on the main bonding surface of the web plate mold and the web plate reinforcing position; the web plate main structure is laid on the web plate die; the second demolding cloth, the composite flow guide net and the flow guide pipeline are laid on the web plate main structure, the second demolding cloth is laid at the position where the web plate connecting rod is bonded, the composite flow guide net is formed by compositing the flow guide net and the isolation film and is symmetrically laid by using the center line of the web plate, and the section of the flow guide pipeline is in a shape of being
Paving along the central line of the web; and the air exhaust system comprises air exhaust ports arranged on two sides of the web plate die, and the blade web plate perfusion auxiliary material structure is sealed through a vacuum bag film.
Further, the first release cloth laid on the primary bonding surface of the web mold extends to the outside of the primary bonding surface of the web mold.
Further, the second demolding cloth paved on the web main structure is in a block shape.
Furthermore, the composite flow guide net is laid at the root of the web plate along the arc shape of the core material at the root of the web plate.
Further, the diversion pipeline is paved from the lowest point of the root arc to the tip of the web plate.
Further, the diversion pipeline is laid above the composite diversion net.
Furthermore, a plurality of glue injection openings are formed in the flow guide pipeline.
Further, the extraction opening is provided with a plurality of, seals through the vacuum unit.
Further, the vacuum unit above the extraction opening comprises a one-way breathable film, a flow guide net and a sealing rubber strip.
Furthermore, a continuous air guide felt is laid above the vacuum unit of the air pumping hole.
The blade web pouring auxiliary material structure has the advantages that:
1) the pouring structure of the invention uses less auxiliary material, reduces the cost of the web auxiliary material, has short time for cleaning the auxiliary material, generates less garbage and plays a positive role in environmental protection;
2) the problems of indentation on the surface of the web and scorching of the core material are solved;
3) and meanwhile, the production efficiency of the web plate is improved.
Drawings
FIG. 1 is a schematic cross-sectional view of a blade web infusion aid structure of the present invention;
fig. 2 is a schematic laying diagram of a vacuum bag film of the blade web perfusion auxiliary material structure.
In the figure: 1. a web mold; 2. a web main structure; 31. a first release fabric; 32. a second release fabric; 4. a composite flow guide net; 5. a diversion pipeline; 6. a vacuum unit; 7. an air guide felt; 8. an air extraction opening; 9. sealing rubber strips; 10. a leading edge web; 11. vacuum bag film; 12. a trailing edge web.
Detailed Description
For better understanding of the purpose, structure and function of the present invention, a structure of a blade web perfusion auxiliary material of the present invention will be described in further detail below with reference to the accompanying drawings.
As shown in fig. 1 to 2, a blade web pouring auxiliary material structure according to the present invention includes a first release fabric 31, a web main structure 2, a second release fabric 32, a composite flow guide net 4, a flow guide pipeline 5, an air exhaust system, and a vacuum bag film 11.
Specifically, before the web is layered, the first release cloth 31 is laid on the main bonding surface of the web mold 1 and the web reinforcement position to provide a clean rough operation surface for the main bonding surface of the web and the web reinforcement. Then, the web main structure 2 is laid on the web mold 1, and the web main structure 2 comprises a glass fiber cloth skin and a core material. Then, after the layer of the web main structure 2 is laid, the second release cloth 32, the composite flow guide net 4 and the flow guide pipeline 5 can be laid at the same time, and the second release cloth 32, the composite flow guide net 4 and the flow guide pipeline 5 can be laid on the web main structure 2. Finally, the blade web perfusion auxiliary material structure is sealed through a vacuum bag film 11.
Specifically, the first release cloth 31 on the main bonding surface of the web mold 1 covers the bonding surface and extends to the outside of the bonding surface of the web mold.
Further, the second demolding cloth 32 on the web main structure 2 is discontinuous and blocky, the second demolding cloth 32 is laid at the position where the web connecting rod is bonded and fixed by using glue spraying, and the second demolding cloth 32 is used for providing a clean and rough operation surface for the web connecting rod. The second release cloth 32 is paved only at the required position, so that the using amount is small, and the material cost is low.
Further, the composite flow guide net 4 is formed by combining the flow guide net and an isolation film, the composite flow guide net 4 is laid at the root of the web plate along the arc shape of the core material at the root of the web plate, and the composite flow guide net 4 is symmetrically laid at the blade body part of the web plate along the central line of the web plate and continuously laid to the blade tip of the web plate. The width and the length of the composite flow guide net 4 can be customized, the composite flow guide net 4 with different width and length can be adopted according to different blade types, the composite flow guide net is used, the laying of two materials of the isolating membrane and the flow guide net can be realized at one time, the laying efficiency is high, the composite flow guide net is easy to tear off after being formed, the using amount of the composite flow guide net is small, and the cost is low.
Further, a flow guide pipeline 5 is laid on the composite flow guide net 4 along the center line of the web, the flow guide pipeline 5 is laid at the position of the tip of the web from the lowest point of the arc of the root, the glue injection pipe can be cut into small sections at the position of the tip of the web with larger curvature, and then splicing is carried out, and the joint is covered by second demolding cloth 32.
Furthermore, the guide pipeline 5 provides a flow passage for the resin in the process of pouring, and the section of the guide pipeline 5 is
Shape has increased the area of contact of resin in the pipeline with glass fiber, has reduced the indentation, and in the heating curing process, water conservancy diversion pipeline 5 has the characteristic that the heating produced the flat collapse to the uniform temperature, extrudes remaining resin in the pipeline, has avoided because of the exothermic core scorching problem that leads to of remaining resin reaction in the pipeline. After being formed, the composite flow guide net can be combined with4 tear together and remove, save the time of supplementary material clearance.
Wherein, set up a plurality of injecting glue mouths on the water conservancy diversion pipeline 5, the injecting glue mouth is placed on the water conservancy diversion pipeline, and the base shape below the injecting glue mouth is unanimous with the water conservancy diversion pipeline appearance. According to the invention, the structure that the center line of the web plate is injected to two sides is adopted, so that the injection time is short and the working efficiency is high.
Further, still include the air exhaust system, including setting up the extraction opening 8 in the both sides of web mould 1, the extraction opening is for bleeding down, the setting is in the outside both sides of web main structure 2, and set up an extraction opening 8 at every certain distance, extraction opening 8 covers sealedly through vacuum unit 6, vacuum unit 6 includes one-way ventilated membrane, the water conservancy diversion net, joint strip, vacuum unit 6 has the directionality when laying, the one side that has the glue film when laying up, the cloth cover is towards the extraction opening, continuous air guide felt 7 has been laid to every vacuum unit 6's top.
In addition, the vacuum unit 6 can effectively prevent the resin from entering the suction line, and the investment of the resin collector can be saved. In addition, the air guide felt is used for connecting the air pumping holes, so that the air pumping holes 8 are connected into a line by points, the air pumping efficiency is increased, and the cost is reduced.
Further, a vacuum bag film for sealing is further included, the web main structure 2 and the auxiliary material structure are sealed by using the vacuum bag film 11, and the vacuum bag film 11 is adhered to the web mold 1 through a sealing adhesive tape 9. The vacuum bag film 11 is cut along the shape of the web (the front edge web 10 or the rear edge web 12), the cut vacuum bag film is kept to be continuous, then the cut vacuum bag film 11 is used for laying the web on the other surface, and only the shape is required to be laid, so that the using amount of the vacuum bag film can be reduced, and the material cost is reduced.
The invention is illustrated by taking a pouring structure of a 51.5m web as an example:
step one, a first release cloth 31 is laid.
Clear up web mould 1, lay first drawing of patterns cloth 31 at the main face of bonding of web mould 1 and web reinforcement position, first drawing of patterns cloth 31 covers the face of bonding, extends to the outside of web mould face of bonding simultaneously, uses to spout fixed first drawing of patterns cloth 31 of gluing to make first drawing of patterns cloth 31 and web mould paste really, it is unsettled not.
And step two, paving the web main structure 2.
And laying the web main structure 2 on a web die 1, and specifically laying a glass fiber cloth skin and a core material.
And step three, laying second demolding cloth 32, the composite flow guide net 4 and the flow guide pipeline 5.
After the layers of the web main structure 2 are paved, the second demolding cloth 32, the composite flow guide net 4 and the flow guide pipeline 5 can be paved at the same time. The second demolding cloth 32 is laid at the position where the web connecting rod is bonded, the composite flow guide net 4 is formed by compositing the flow guide net and the isolation film, the width of the composite flow guide net is about 300mm, and the composite flow guide net 4 is laid at the root of the web along the arc shape of the core material at the root of the web. The composite flow guide net 4 is symmetrically laid on the center line of the web plate at the blade part of the web plate, and is continuously laid from the starting position of the core material at the root part of the web plate to the position of 35m of the web plate.
Meanwhile, a guide pipeline 5 is laid, the guide pipeline 5 is laid on the composite guide net 4 along the center line of the web plate, the guide pipeline 5 is laid from the lowest point of the arc of the root to the position of 50m of the blade tip, the glue injection pipe can be cut into small sections at the position with larger curvature of the blade tip and then spliced, and the joint is covered by second demolding cloth 32.
And step four, arranging a plurality of glue injection ports on the flow guide pipeline 5.
Specifically, glue injection ports are arranged at positions 12-17 m (preferably 15m) and 30-34 m (preferably 32m) on the flow guide pipeline 5.
And step five, arranging an air exhaust system.
The two sides of the web plate die are provided with the air exhaust ports 8, the air exhaust ports 8 are covered by the vacuum units 6, the periphery of the air exhaust ports is pasted by the sealing rubber strips 9, the continuous air guide felt 7 is laid from the blade root to the blade tip, and the air guide felt 7 covers each vacuum unit 6 and is in lap joint with the first demolding cloth 31 of the web plate.
And step six, sealing by using a vacuum bag film 11.
The vacuum bag film 11 is cut along with the shape of the front edge web 10 or the rear edge web 13, the cut vacuum bag film is kept to be continuous, then the cut vacuum bag film is used for laying the web on the other surface, only the shape is required to be laid, and the vacuum bag film is adhered to a mould by using a sealing adhesive tape.
According to the blade web perfusion auxiliary material structure, the using amount of the auxiliary materials is small, the cost of the web auxiliary materials is reduced, the time for cleaning the auxiliary materials is short, less garbage is generated, and the positive effect on environmental protection is achieved; the problems of indentation on the surface of the web and scorching of the core material are solved; and meanwhile, the production efficiency of the web plate is improved.
The present invention has been further described with reference to specific embodiments, but it should be understood that the detailed description should not be construed as limiting the spirit and scope of the present invention, and various modifications made to the above-described embodiments by those of ordinary skill in the art after reading this specification are within the scope of the present invention.
Claims (10)
1. A blade web perfusion aid structure, comprising:
a first release cloth (31) laid on the main bonding surface of the web die (1) and the web reinforcement position;
the web main structure (2) is paved on the web die (1);
the second demolding cloth (32), the composite flow guide net (4) and the flow guide pipeline (5) are laid on the web plate main structure (2), the second demolding cloth (32) is laid at the position where the web plate connecting rods are bonded, the composite flow guide net (4) is formed by compositing the flow guide net and an isolation film and is symmetrically laid on the center line of the web plate, and the cross section of the flow guide pipeline (5) is in a shape of being
Paving along the central line of the web; and
the air exhaust system comprises air exhaust ports (8) arranged on two sides of the web plate die (1), and the blade web plate perfusion auxiliary material structure is sealed through a vacuum bag film (11).
2. The blade web casting aid structure according to claim 1, characterized in that the first release cloth (31) laid on the primary bonding surface of the web mold (1) extends to the outside of the primary bonding surface of the web mold.
3. The blade web pouring auxiliary material structure according to claim 1, wherein the second release cloth (32) laid on the web main structure (2) is in a block shape.
4. The blade web pouring auxiliary material structure as claimed in claim 1, wherein the composite flow guide net (4) is laid along the arc-shaped follow-up of the core material at the root of the web.
5. The blade web pouring auxiliary material structure according to claim 1, wherein the guide pipeline (5) is laid from the lowest point of the root arc to the tip of the web.
6. The blade web infusion aid structure according to claim 1, wherein the flow guide pipeline (5) is laid above the composite flow guide net (4).
7. The blade web pouring auxiliary material structure as claimed in claim 1, wherein a plurality of glue injection ports are arranged on the flow guide pipeline (5).
8. The blade web infusion aid structure according to claim 1, wherein the suction ports (8) are provided in plurality and sealed by vacuum units (6).
9. The blade web perfusion auxiliary material structure according to claim 8, wherein the vacuum unit (6) above the air pumping port (8) comprises a one-way air-permeable membrane, a flow guide net and a sealing rubber strip.
10. The blade web perfusion auxiliary material structure according to claim 8, wherein a continuous air guide felt (7) is laid above the vacuum unit (6) of the suction opening (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110307961.7A CN112848392A (en) | 2021-03-23 | 2021-03-23 | Blade web fills and assists material structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110307961.7A CN112848392A (en) | 2021-03-23 | 2021-03-23 | Blade web fills and assists material structure |
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| Publication Number | Publication Date |
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| CN112848392A true CN112848392A (en) | 2021-05-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110307961.7A Pending CN112848392A (en) | 2021-03-23 | 2021-03-23 | Blade web fills and assists material structure |
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| CN (1) | CN112848392A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114030110A (en) * | 2021-09-23 | 2022-02-11 | 甘肃旭晶新材料有限公司 | Method for eliminating corner stress concentration of megawatt wind power generation blade and blade |
| CN114030110B (en) * | 2021-09-23 | 2024-06-11 | 甘肃旭晶新材料有限公司 | Megawatt wind power generation blade corner stress concentration eliminating method and blade |
-
2021
- 2021-03-23 CN CN202110307961.7A patent/CN112848392A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114030110A (en) * | 2021-09-23 | 2022-02-11 | 甘肃旭晶新材料有限公司 | Method for eliminating corner stress concentration of megawatt wind power generation blade and blade |
| CN114030110B (en) * | 2021-09-23 | 2024-06-11 | 甘肃旭晶新材料有限公司 | Megawatt wind power generation blade corner stress concentration eliminating method and blade |
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