CN114986934A - Wind power blade pouring method - Google Patents
Wind power blade pouring method Download PDFInfo
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- CN114986934A CN114986934A CN202210515614.8A CN202210515614A CN114986934A CN 114986934 A CN114986934 A CN 114986934A CN 202210515614 A CN202210515614 A CN 202210515614A CN 114986934 A CN114986934 A CN 114986934A
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- glue
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- glass fiber
- glue injection
- vacuum
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- 238000000034 method Methods 0.000 title claims abstract description 58
- 239000003292 glue Substances 0.000 claims abstract description 89
- 238000002347 injection Methods 0.000 claims abstract description 61
- 239000007924 injection Substances 0.000 claims abstract description 61
- 239000000463 material Substances 0.000 claims abstract description 27
- 229920001971 elastomer Polymers 0.000 claims abstract description 25
- 230000010412 perfusion Effects 0.000 claims abstract description 23
- 230000008569 process Effects 0.000 claims abstract description 22
- 238000007789 sealing Methods 0.000 claims abstract description 16
- 239000000243 solution Substances 0.000 claims abstract description 10
- 239000004744 fabric Substances 0.000 claims description 78
- 239000003365 glass fiber Substances 0.000 claims description 43
- 239000006260 foam Substances 0.000 claims description 18
- 239000012528 membrane Substances 0.000 claims description 12
- 238000002360 preparation method Methods 0.000 claims description 8
- 238000013461 design Methods 0.000 claims description 7
- 239000011152 fibreglass Substances 0.000 claims description 6
- 238000005429 filling process Methods 0.000 claims description 4
- 230000008859 change Effects 0.000 claims description 3
- 239000000428 dust Substances 0.000 claims description 3
- 230000007704 transition Effects 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 2
- 239000006082 mold release agent Substances 0.000 claims description 2
- 238000012545 processing Methods 0.000 claims description 2
- 238000001514 detection method Methods 0.000 claims 1
- 239000011347 resin Substances 0.000 abstract description 9
- 229920005989 resin Polymers 0.000 abstract description 9
- 238000009755 vacuum infusion Methods 0.000 abstract description 4
- 238000001802 infusion Methods 0.000 abstract description 3
- 230000036541 health Effects 0.000 abstract description 2
- 238000007493 shaping process Methods 0.000 abstract description 2
- 230000009471 action Effects 0.000 description 4
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- 239000003822 epoxy resin Substances 0.000 description 3
- 229920000647 polyepoxide Polymers 0.000 description 3
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 3
- 229920002554 vinyl polymer Polymers 0.000 description 3
- 230000002087 whitening effect Effects 0.000 description 3
- 230000037303 wrinkles Effects 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
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- 241000771208 Buchanania arborescens Species 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 229920000459 Nitrile rubber Polymers 0.000 description 1
- 229920002292 Nylon 6 Polymers 0.000 description 1
- 229920002302 Nylon 6,6 Polymers 0.000 description 1
- 240000007182 Ochroma pyramidale Species 0.000 description 1
- 229920005830 Polyurethane Foam Polymers 0.000 description 1
- 206010057190 Respiratory tract infections Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
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Images
Classifications
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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
- B29C70/30—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
- B29C70/38—Automated lay-up, e.g. using robots, laying filaments according to predetermined patterns
-
- 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
-
- 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
- B29C70/544—Details of vacuum bags, e.g. materials or shape
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Mechanical Engineering (AREA)
- Robotics (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
The invention belongs to the technical field of wind power blades, and particularly discloses a wind power blade perfusion method which comprises the steps of preparing in an early stage; preparing for paving; setting a perfusion system; laying a vacuum bag film; preparing perfusion: the method comprises the following steps: connecting a rubber machine pipeline; pressure maintaining before glue injection; pouring and curing: the glue solution in the integrated online glue pouring machine is poured into the product after passing through the glue outlet pipe and the glue pouring base. Compare traditional vacuum infusion shaping mode, this scheme adopts integrative online filling, easy operation, and is high-efficient, saves the resin, can reduce raw and other materials cost by a wide margin. The whole process of the infusion is in a vacuum sealing state, no resin smell overflows, and the influence on the body health of an operator is minimum.
Description
Technical Field
The invention belongs to the technical field of wind power blades, and particularly relates to a wind power blade perfusion method.
Background
The wind power blades are arranged on the hub of the whole machine and drive the generator to generate electricity under the action of wind; at present, one of the main components of a large-scale horizontal shaft wind generating set is a wind generating blade, and the main structural components of the blade comprise PS half shells, SS half shells, main beams, webs, trailing edge beams, blade root prefabricated parts and the like. The half shells, main beams, webs, trailing edge beams, etc. are typically formed by combining fiberglass with HYVER vinyl epoxy. The HYVER vinyl epoxy resin is also a novel perfusion resin in the industry, has certain advantages in price compared with other epoxy resins, and can greatly reduce the cost. However, the HYVER vinyl epoxy resin has certain volatility, and after being mixed, strong pungent smell is easily generated in an open container, and the pungent smell is dissipated into the air to cause respiratory tract infection of operators. At present, the common filling mode is vacuum filling, resin bubbles are generated due to frequent barrel dumping and are filled into products, and the quality defect of whitening of the products is reduced.
Disclosure of Invention
The invention aims to provide a wind power blade infusion method, which aims to solve the problem that pungent smell escapes into the air during the vacuum infusion process of HYVER resin to cause infection to the respiratory tract of operators; and the traditional process frequently pours the barrel to cause the resin to generate bubbles, and the bubbles are poured into the product, so that the defect of the whitening quality of the product is reduced.
In order to achieve the purpose, the technical scheme of the invention is as follows: a wind power blade pouring method comprises
Early preparation: preparing a corresponding mould and processing the mould;
paving preparation: the method comprises the following steps: arranging lower surface auxiliary materials; placing a sealing rubber strip: arranging sealing rubber strips around the die; laying a lower surface glass fiber cloth layer; laying sandwich foam; laying an upper surface glass fiber cloth layer; arranging an upper surface auxiliary material;
setting a perfusion system: the method comprises the following steps: laying a glue injection ohmic pipe, and placing a glue injection seat on the glue injection ohmic pipe; laying an exhaust pipe;
laying a vacuum bag film: laying a vacuum bag film according to the width of a product area, and sealing two sides of the vacuum bag film with sealing rubber strips;
preparing for perfusion: the method comprises the following steps: the glue outlet pipe is connected with a glue outlet and a glue injection seat of the integrated online glue injection machine; maintaining pressure before glue injection, and checking the vacuum degree of the whole vacuum system before glue injection, wherein the vacuum degree can meet the requirement for vacuum injection;
pouring and curing: the glue solution in the integrated online glue pouring machine is poured into the product after passing through the glue outlet pipe and the glue pouring base; the surface of the product area needs to be checked in the filling process, so that the product area is completely wet after filling is completed; the vacuum pressure of the entire vacuum system needs to be checked.
Further, in the early preparation process, the surface of the mold needs to be cleaned, no foreign matters, glue residues and dust residues exist, and the mold release agent is treated completely.
Further, in the arrangement of the auxiliary material on the lower surface, lower demolding cloth is laid on the surface of the mold and is adhered to the surface of the mold, and the gram weight of the demolding cloth is 80-150g/m 2 。
Further, in the process of laying the lower surface glass fiber cloth layer, the lower surface glass fiber cloth layer is placed in a mold, the specification, the starting and stopping point position, the lap joint width, the lap joint position and the turning-out width of the lower surface glass fiber cloth layer meet the design requirements, and the lower surface glass fiber cloth layer is laid smoothly without wrinkles and pollution; the specification of the lower surface glass fiber cloth layer comprises 606 biaxial cloth with the weight of 2AX-606 g and 8008 biaxial cloth with the weight of 2AX-808 g; in the process of laying the sandwich foam, the position of the foam thickness transition point meets the requirement, the step of the splicing seam position of the foam with different thicknesses is less than or equal to 1mm, the gap is less than or equal to 3mm, and the chamfering ratio of the starting point and the stopping point meets the requirement; in the process of laying the upper surface glass fiber cloth layer, the upper surface glass fiber cloth layer is placed in a mold, the specification, the starting point position, the lap joint width, the lap joint position and the turning-out width of the upper surface glass fiber cloth layer meet the design requirements, the upper surface glass fiber cloth layer is laid smoothly without folds and pollution, the specification of the upper surface glass fiber cloth layer comprises 2AX-606 gram weight biaxial cloth and 2AX-808 gram weight 8008 biaxial cloth; in the process of arranging the upper surface auxiliary material, laying upper demolding cloth on the upper surface glass fiber cloth layer; laying a porous isolating membrane on the upper demoulding cloth; laying a flow guide net on the isolating membrane with the holes; and laying a layer of continuous felt between the flow guide net and the glue injection ohmic pipe.
Further, the gram weight of the upper release cloth is 80-150g/m 2 (ii) a The gram weight of the isolating membrane with the holes is 30-45g/m 2 The hole spacing is 6-8mm, the hole diameter is 0.4-0.8mm, and the material is PE/PP material; the gram weight of the flow guide net is 100-200g/m 2 The material is PE/PP material; the gram weight of the continuous felt is 300-450g/m 2 。
Further, in the setting of a pouring system, glue injection ohmic tubes are placed in the middle of the width of the whole product area, a plurality of glue injection seats are placed on the glue injection ohmic tubes, and the number of the glue injection seats corresponds to the number of glue outlets of the integrated online glue pouring machine; the glue injection seat opening and the ohmic tube are not blocked; and air exhaust pipes are arranged on two sides of the mould and are in lap joint with the upper demoulding cloth of the flanging.
Further, laying a vacuum bag film, wherein the vacuum bag film is not damaged, tensed or overhead, if the vacuum bag film is overhead, pressure relief is needed, and vacuumizing is performed again after the allowance of the vacuum bag film is adjusted; the totally-sealed double-layer vacuum bag films are respectively a primary vacuum bag film and a secondary vacuum bag film, and the film thickness of each layer of vacuum bag film is 50 mu or 65 mu.
Further, during pressure maintaining before glue injection, the vacuum bag film needs to reach a value below 30mbar for starting inspection, the reading change of a vacuum meter is less than or equal to 30mbar within 5min, and the requirement is met according to the vacuum degree; if the vacuum degree does not meet the requirement, checking a gas leakage point, or directly replacing a new vacuum bag film, and checking the vacuum degree of the system again after tightening; before glue injection, whether the proportion of glue solution meets the requirements, whether the temperature meets the process requirements and whether the density of bubbles in the glue solution meets the requirements are required to be determined.
And further, after the pouring is finished, opening the mold for heating, and carrying out constant-temperature curing until the Tg of the glass fiber reinforced plastic sample block on the surface of the product meets the requirement, namely, tearing the film.
Further, a standby glue injection seat and a standby glue outlet pipe are arranged, and if air leakage of the system is found in the filling process, the standby glue injection seat and the standby glue outlet pipe are used for air exhaust.
The beneficial effects of this technical scheme lie in:
1. compare traditional vacuum infusion shaping mode, this scheme adopts integrative online filling, easy operation, and is high-efficient, saves the resin, can reduce raw and other materials cost by a wide margin.
2. The number of the perfusion operators is reduced by half, the operation time is shortened by 1/3, and the labor hour cost is greatly saved.
3. The whole process of the infusion is in a vacuum sealing state, no resin smell overflows, and the influence on the body health of an operator is minimum.
4. The DPU with bubble whitening defects is greatly reduced.
Drawings
FIG. 1 is a flow chart of a method for filling a wind turbine blade according to the present invention;
FIG. 2 is a laying diagram of a laying preparation and setting pouring system in the wind turbine blade pouring method of the present invention;
FIG. 3 is a laying diagram of a vacuum bag film laid in the wind turbine blade perfusion method of the present invention;
FIG. 4 is a schematic view of the perfusion in the perfusion method of the wind turbine blade according to the present invention.
Detailed Description
The following is further detailed by way of specific embodiments:
reference numerals in the drawings of the specification include: the device comprises a mould 1, a lower demoulding cloth 2, a lower surface glass fiber cloth layer 3, sandwich foam 4, an upper surface glass fiber cloth layer 5, an upper demoulding cloth 6, a porous isolating membrane 7, a flow guide net 8, a continuous felt 9, an injection ohmic tube 10, an exhaust tube 11, a sealing rubber strip 12, a primary vacuum bag membrane 13, a secondary vacuum bag membrane 14, an integrated online injection machine 15, an injection tube 16, an injection seat 17 and an exhaust opening 18.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The examples are substantially as shown in figures 1 to 4 of the accompanying drawings: a wind turbine blade perfusion method, as shown in fig. 1, includes the following steps:
step S1: early preparation: preparing a corresponding mould 1, treating the mould 1, cleaning the surface of the mould 1 without foreign matters, glue residues and dust residues, and finishing the treatment of a release agent;
step S2: paving preparation: as shown in fig. 2, the method comprises the following steps:
step S2.1: arranging lower surface auxiliary materials, laying lower demolding cloth 2 on the surface of the mold 1, and adhering the lower demolding cloth 2 to the surface of the mold 1 by using spray glue or other viscous substances to ensure the roughness of an adhesion area; the gram weight of the demoulding cloth is 80-150g/m 2 Preferably 80 to 110g/m 2 The polyester or nylon-6 or nylon-66 material demoulding cloth;
step S2.2: placing a sealing rubber strip 12: two sealing rubber strips 12 are stuck around the die 1; the protective paper of the sealing rubber strip 12 is kept until the protective paper is torn off when being sealed with a vacuum bag film, and the material of the sealing rubber strip 12 is polyester or nitrile rubber, a black common rubber strip or a yellow high-temperature resistant rubber strip;
step S2.3: laying a lower surface glass fiber cloth layer 3, placing the lower surface glass fiber cloth layer 3 in a mould 1, wherein the specification, the start and stop point position, the lap joint width, the lap joint position and the turning-out width of the lower surface glass fiber cloth layer 3 meet the design requirements, and the lower surface glass fiber cloth layer 3 is laid smoothly without wrinkles and pollution; the specification of the lower surface glass fiber cloth layer 3 comprises but is not limited to 2AX-606 (+ -45 ℃) gram weight 606 biaxial cloth and 2AX-808 (+ -45 ℃) gram weight 8008 biaxial cloth; if the lower surface glass fiber cloth layer 3 is polluted or soaked in water in the using process, the lower surface glass fiber cloth layer needs to be replaced;
step S2.4: laying a sandwich foam 4, wherein the sandwich foam 4 is selected from balsa wood, PET foam, SAN foam, PU foam, PS foam, PMI foam and the like; the position of the transition point of the foam thickness meets the requirement, the step of the splicing seam position of the foams with different thicknesses is less than or equal to 1mm, the gap is less than or equal to 3mm, and the chamfer ratio of the start point and the stop point meets the requirement; if the problems of color change, block shortage, pollution, dampness, light wood mildew and the like of the sandwich foam 4 are found in the using process, the sandwich foam 4 needs to be replaced;
step S2.5: laying an upper surface glass fiber cloth layer 5; placing an upper surface glass fiber cloth layer 5 in a mold 1, wherein the specification, the starting and stopping point position, the lap joint width, the lap joint seam position and the turning-out width of the upper surface glass fiber cloth layer 5 meet the design requirements, the upper surface glass fiber cloth layer 5 is laid flatly, and has no wrinkles and no pollution, and the specification of the upper surface glass fiber cloth layer 5 comprises but is not limited to 2AX-606 (+/-45 ℃) gram weight 606 biaxial cloth and 2AX-808 (+/-45 ℃) gram weight 8008 biaxial cloth; if the upper surface glass fiber cloth layer 5 is polluted or soaked in water in the using process, the upper surface glass fiber cloth layer needs to be replaced;
step S2.6: arranging an upper surface auxiliary material; laying an upper release cloth 6 on the upper surface glass fiber cloth layer 5, wherein the gram weight of the upper release cloth 6 is 80-150g/m 2 (ii) a A porous isolating membrane 7 is laid on the upper demoulding cloth 6, and the gram weight of the porous isolating membrane 7 is 30-45g/m 2 The hole spacing is 6-8mm, the hole diameter is 0.4-0.8mm, and the material is PE/PP material; a flow guide net 8 is laid on the isolating membrane 7 with holes, the gram weight of the flow guide net 8 is 100- 2 The material is PE/PP material; a layer of continuous felt 9 is laid between the flow guide net 8 and the glue injection ohmic pipe 10 and used for collecting bubbles in the resin and preventing the bubbles from entering the product; the gram weight of the continuous felt 9 is 300-450g/m 2 ；
Step S3: setting a perfusion system: as shown in fig. 2, the method comprises the following steps:
step S3.1: laying a glue injection ohmic pipe 10, and placing the glue injection ohmic pipe 10 in the middle of the width of the whole product area; the glue injection ohmic tube 10 can be a cushion plate type ohmic tube or a cushion plate-free ohmic tube, and a flow guide cushion plate needs to be arranged below the cushion plate-free ohmic tube; placing a plurality of glue injection seats 17 on the glue injection ohmic tube 10, wherein the number of the glue injection seats 17 corresponds to the number of glue outlets of the integrated online glue injection machine 15; the 17 ports of the glue injection seat and the ohmic tube are not blocked;
step S3.2: laying an air extraction pipe 11; placing exhaust pipes 11 on two sides of the mould 1, wherein the exhaust pipes 11 are in lap joint with the upper demoulding cloth 6 of the flanging; the exhaust tube 11 can be an ohmic tube or a spiral tube; the mould 1 is provided with an extraction opening 18;
step S4: as shown in fig. 3, vacuum bag films were laid: the vacuum bag film is laid according to the width of the product area, and two sides of the vacuum bag film are tightly sealed with the sealing rubber strips 12; the vacuum bag film is not damaged, tensed or overhead, if the vacuum bag film is overhead, the pressure is released, and the vacuum bag film is vacuumized again after the allowance of the vacuum bag film is adjusted; a totally-sealed double-layer vacuum bag film which is a primary vacuum bag film 13 and a secondary vacuum bag film 14 respectively, wherein the film thickness of each layer of vacuum bag film is 50 mu or 65 mu;
step S5: preparing for perfusion: the method comprises the following steps:
step S5.1: the two sides of the rubber outlet pipe 16 are respectively connected with a rubber outlet and a rubber injection seat 17 of the integrated online rubber injection machine 15; specifically, two groups of common rubber outlet pipes and two groups of standby rubber outlet pipes are arranged, and the rubber injection seat 17 comprises two groups of common rubber injection seats and two groups of standby rubber injection seats;
step S5.2: maintaining pressure before glue injection, checking the vacuum degree of the whole vacuum system before glue injection, performing vacuum infusion until the vacuum degree meets the requirement, starting checking when the vacuum bag film interior needs to reach below 30mbar, and changing the reading of a vacuum meter within 5min is less than or equal to 30mbar, wherein the vacuum degree meets the requirement; if the vacuum degree does not meet the requirement, checking a gas leakage point, or directly replacing a new vacuum bag film, and checking the vacuum degree of the system again after tightening; before glue injection, whether the proportion of glue solution meets the requirements, whether the temperature meets the process requirements and whether the density of bubbles in the glue solution meets the requirements are required to be determined;
step S6: pouring and curing, as shown in fig. 4, taking the pouring of the web as an example: opening a glue outlet valve of the integrated online glue injection machine 15, and injecting glue into a product after the glue passes through a glue outlet pipe 16 and a glue injection seat 17; the surface of the product area needs to be checked in the filling process, so that the product area is completely wet after filling is completed; the vacuum pressure of the whole vacuum system needs to be checked, and if the system leaks air, a standby rubber outlet pipe needs to be used for exhausting air; after the pouring is finished, the mold 1 is opened and heated, and constant-temperature curing is carried out (for example, the web needs to be heated to 70-80 ℃ and then is carried out), until the Tg of the glass fiber reinforced plastic sample block on the surface of the product meets the requirement (for example, the Tg of the glass fiber reinforced plastic sample block on the surface of the web needs to be higher than or equal to 70 ℃), and then the film is torn. Solidifying Tg to meet the process requirements, removing auxiliary materials such as a vacuum bag film, a flow guide net 8, an adhesive injection seat 17 and the like, and cutting and modifying according to design requirements; and finally assembling, for example, connecting the web plates by using glass fiber reinforced plastic connecting blocks and adhesive glue to connect the LE/TE web plates to form the product web plate.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
The foregoing is merely an example of the present invention, and common general knowledge in the field of known specific structures and characteristics is not described herein in any greater extent than that known in the art at the filing date or prior to the priority date of the application, so that those skilled in the art can now appreciate that all of the above-described techniques in this field and have the ability to apply routine experimentation before this date can be combined with one or more of the present teachings to complete and implement the present invention, and that certain typical known structures or known methods do not pose any impediments to the implementation of the present invention by those skilled in the art. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.
Claims (10)
1. A wind power blade pouring method is characterized in that: comprises that
Early preparation: preparing a corresponding mould and processing the mould;
preparing for paving: the method comprises the following steps: arranging lower surface auxiliary materials; placing a sealing rubber strip: arranging sealing rubber strips around the die; laying a lower surface glass fiber cloth layer; laying sandwich foam; laying an upper surface glass fiber cloth layer; arranging upper surface auxiliary materials;
setting a perfusion system: the method comprises the following steps: laying glue injection ohmic tubes, and placing glue injection seats on the glue injection ohmic tubes; laying an exhaust pipe;
laying a vacuum bag film: laying a vacuum bag film according to the width of a product area, and sealing two sides of the vacuum bag film with sealing rubber strips;
preparing for perfusion: the method comprises the following steps: the glue outlet pipe is connected with a glue outlet of the integrated online glue injection machine and a glue injection seat; maintaining pressure before glue injection, and checking the vacuum degree of the whole vacuum system before glue injection, wherein the vacuum degree can meet the requirement for vacuum injection;
pouring and curing: the glue solution in the integrated online glue pouring machine is poured into the product after passing through the glue outlet pipe and the glue pouring base; the surface of a product area needs to be checked in the filling process, so that the product area is completely wet after filling is completed; the vacuum pressure of the entire vacuum system needs to be checked.
2. The wind turbine blade perfusion method of claim 1, wherein: in the early preparation process, the surface of the mold needs to be cleaned, no foreign matters, glue residues and dust are left, and the mold release agent is treated completely.
3. A method as claimed in claim 1The wind power blade perfusion method is characterized in that: arranging the lower auxiliary material, laying lower demolding cloth on the surface of the mold, adhering the lower demolding cloth on the surface of the mold, wherein the gram weight of the demolding cloth is 80-150g/m 2 。
4. The wind turbine blade perfusion method of claim 1, wherein: in the process of laying the lower surface glass fiber cloth layer, the lower surface glass fiber cloth layer is placed in a mold, the specification, the start and stop point position, the lap joint width, the lap joint position and the turning-out width of the lower surface glass fiber cloth layer meet the design requirements, and the lower surface glass fiber cloth layer is laid smoothly without folds and pollution; the specification of the lower surface glass fiber cloth layer comprises 606 biaxial cloth with the weight of 2AX-606 g and 8008 biaxial cloth with the weight of 2AX-808 g; in the process of laying the sandwich foam, the position of the foam thickness transition point meets the requirement, the step of the splicing seam position of the foam with different thicknesses is less than or equal to 1mm, the gap is less than or equal to 3mm, and the chamfering ratio of the starting point and the stopping point meets the requirement; in the process of laying the upper surface glass fiber cloth layer, the upper surface glass fiber cloth layer is placed in a mold, the specification, the starting point position, the lap joint width, the lap joint position and the turning-out width of the upper surface glass fiber cloth layer meet the design requirements, the upper surface glass fiber cloth layer is laid smoothly without folds and pollution, the specification of the upper surface glass fiber cloth layer comprises 2AX-606 gram weight biaxial cloth and 2AX-808 gram weight 8008 biaxial cloth; in the process of arranging the upper surface auxiliary material, laying upper demolding cloth on the upper surface glass fiber cloth layer; laying a porous isolating membrane on the upper demoulding cloth; laying a flow guide net on the isolating membrane with the holes; and laying a layer of continuous felt between the flow guide net and the glue injection ohmic pipe.
5. The wind turbine blade pouring method according to claim 4, wherein: the gram weight of the upper demolding cloth is 80-150g/m 2 (ii) a The gram weight of the isolating membrane with the holes is 30-45g/m 2 The hole spacing is 6-8mm, the hole diameter is 0.4-0.8mm, and the material is PE/PP material; the gram weight of the flow guide net is 100-200g/m 2 The material is PE/PP material; the gram weight of the continuous felt is 300-450g/m 2 。
6. The wind turbine blade perfusion method of claim 4, wherein: in the setting of a pouring system, a glue injection ohmic tube is placed in the middle of the width of the whole product area, a plurality of glue injection seats are placed on the glue injection ohmic tube, and the number of the glue injection seats corresponds to the number of glue outlets of the integrated online glue pouring machine; the glue injection seat opening and the ohmic tube are not blocked; and air exhaust pipes are arranged on two sides of the mould and are in lap joint with the upper demoulding cloth of the flanging.
7. The wind turbine blade perfusion method of claim 1, wherein: laying a vacuum bag film, wherein the vacuum bag film is not damaged, tensed or overhead, if the vacuum bag film is overhead, pressure relief is needed, and vacuumizing is performed again after the allowance of the vacuum bag film is adjusted; the totally-sealed double-layer vacuum bag films are respectively a primary vacuum bag film and a secondary vacuum bag film, and the film thickness of each layer of vacuum bag film is 50 mu or 65 mu.
8. The wind turbine blade perfusion method of claim 1, wherein: during pressure maintaining before glue injection, the detection is started when the film inside the vacuum bag needs to reach below 30mbar, the reading change of a vacuum meter is less than or equal to 30mbar within 5min, and the requirement is met according to the vacuum degree; if the vacuum degree does not meet the requirement, checking a gas leakage point, or directly replacing a new vacuum bag film, and checking the vacuum degree of the system again after tightening; before glue injection, whether the proportion of glue solution meets the requirements, whether the temperature meets the process requirements and whether the density of bubbles in the glue solution meets the requirements are required to be determined.
9. The wind turbine blade perfusion method of claim 1, wherein: and after the pouring is finished, opening the mold for heating, and carrying out constant-temperature curing until the Tg of the glass fiber reinforced plastic sample block on the surface of the product meets the requirement, namely, tearing the film.
10. The wind turbine blade pouring method according to claim 1, characterized in that: and a standby glue injection seat and a standby glue outlet pipe are arranged, and if the system leaks air in the process of pouring, the standby glue injection seat and the standby glue outlet pipe are used for exhausting air.
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| CN202210515614.8A CN114986934A (en) | 2022-05-12 | 2022-05-12 | Wind power blade pouring method |
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| CN202210515614.8A CN114986934A (en) | 2022-05-12 | 2022-05-12 | Wind power blade pouring method |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103042701A (en) * | 2012-12-27 | 2013-04-17 | 中国科学院工程热物理研究所 | Integrated formation device and method for wind power blade |
| CN113942252A (en) * | 2021-10-20 | 2022-01-18 | 甘肃重通成飞新材料有限公司 | Method for integrally pouring and molding bonding flange die and blade skin |
| CN114193791A (en) * | 2021-12-10 | 2022-03-18 | 甘肃重通成飞新材料有限公司 | Shell filling process for forming connecting angle in advance |
| CN114311453A (en) * | 2021-11-17 | 2022-04-12 | 洛阳双瑞风电叶片有限公司 | Method for integrally pouring wind power blade web along with shell |
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- 2022-05-12 CN CN202210515614.8A patent/CN114986934A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103042701A (en) * | 2012-12-27 | 2013-04-17 | 中国科学院工程热物理研究所 | Integrated formation device and method for wind power blade |
| CN113942252A (en) * | 2021-10-20 | 2022-01-18 | 甘肃重通成飞新材料有限公司 | Method for integrally pouring and molding bonding flange die and blade skin |
| CN114311453A (en) * | 2021-11-17 | 2022-04-12 | 洛阳双瑞风电叶片有限公司 | Method for integrally pouring wind power blade web along with shell |
| CN114193791A (en) * | 2021-12-10 | 2022-03-18 | 甘肃重通成飞新材料有限公司 | Shell filling process for forming connecting angle in advance |
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Application publication date: 20220902 |