CN113386373B - Integrated resin infusion method and system applied to wind power blade manufacturing - Google Patents
Integrated resin infusion method and system applied to wind power blade manufacturing Download PDFInfo
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- CN113386373B CN113386373B CN202110594152.9A CN202110594152A CN113386373B CN 113386373 B CN113386373 B CN 113386373B CN 202110594152 A CN202110594152 A CN 202110594152A CN 113386373 B CN113386373 B CN 113386373B
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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
- B29C70/40—Shaping or impregnating by compression not applied
- B29C70/42—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles
- B29C70/44—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles using isostatic pressure, e.g. pressure difference-moulding, vacuum bag-moulding, autoclave-moulding or expanding rubber-moulding
- B29C70/443—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles using isostatic pressure, e.g. pressure difference-moulding, vacuum bag-moulding, autoclave-moulding or expanding rubber-moulding and impregnating by vacuum or injection
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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
- B29C70/54—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
- B29C70/546—Measures for feeding or distributing the matrix material in the reinforcing structure
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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
- B29C70/54—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
- B29C70/548—Measures for feeding or distributing the matrix material in the reinforcing structure using distribution constructions, e.g. channels incorporated in or associated with the mould
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- 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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- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- 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
Abstract
The invention discloses an integrated resin infusion method and system applied to wind power blade manufacturing, wherein the method comprises the following steps: dividing a pouring area for the blade forming die based on the position of a glue injection port on the blade forming die and numbering; calculating the resin amount required by each pouring area according to the thickness of the layer and the area of the pouring area; planning the resin pouring duration and the pouring sequence of the glue pouring openings corresponding to the pouring areas based on the layer structure, the positions of the glue pouring openings and the resin pouring rate; resin is poured into each glue injection port on the blade forming die based on the pouring time and the pouring sequence, the pouring direction and the pouring time of the resin are planned based on the pouring characteristics of the resin, and the quality and the efficiency of resin pouring are guaranteed. Meanwhile, by means of the pouring mode, the balance of resin amount in each pouring area can be guaranteed, the problem that too much or too little resin is generated in the local part of the blade forming die is avoided, the pouring uniformity and controllability are guaranteed, and the forming quality of the blade is improved.
Description
Technical Field
The invention relates to the technical field of wind power blade manufacturing, in particular to an integrated resin infusion method and system applied to wind power blade manufacturing.
Background
In the production and manufacturing process of the wind power blade, firstly, fiber cloth layers are laminated on an air guide net and stacked in a blade forming die, and then, the forming is carried out in a vacuum resin infusion mode. The vacuum infusion process is the most central part in the wind power blade forming process.
As shown in fig. 1, in the prior art, when resin is poured, the resin is stored in different containers, and the resin is sucked into a vacuum bag of a blade forming mold by a glue injection pipe. In the mode, the resin is glued to the containing barrel after being discharged from the filling machine, and the containing barrel has the process that the resin is in secondary air contact with the air in the moving process, so that a large amount of air bubbles are additionally generated in the resin, the cooperativity and the controllability of the filling resin are relatively poor, and the resin is easily convected in the blade forming die during filling to form a cavity. The bubble content of resin in the pouring directly determines the effect of pouring, and too much bubbles in the blade after the shaping can also lead to wind-powered electricity generation blade structural strength to reduce.
How to reduce the bubble quantity in the wind-powered electricity generation blade after the shaping, be the key that promotes wind-powered electricity generation blade quality, also be the problem that needs to solve the optimization in the current wind-powered electricity generation blade manufacturing process urgently.
Disclosure of Invention
Aiming at the problem that the quality of a formed wind power blade is affected by a large number of bubbles, the invention aims to provide an integrated resin infusion method applied to wind power blade manufacturing, which can effectively reduce the bubbles mixed into resin during resin infusion, eliminate air between fiber pavements and improve the efficiency of a vacuum infusion process, and in order to realize the method, the invention aims to provide an integrated resin infusion system applied to wind power blade manufacturing, and the specific scheme is as follows:
an integrated resin infusion method applied to wind power blade manufacturing comprises the following steps:
dividing a pouring area for the blade forming die based on the position of a glue injection port on the blade forming die and numbering;
calculating the resin amount required by each pouring area according to the thickness of the layer and the area of the pouring area;
planning the resin pouring duration and the resin pouring sequence of the glue pouring opening corresponding to each pouring area based on the layer structure, the position of the glue pouring opening and the resin pouring rate;
and based on the pouring time and the pouring sequence, pouring resin into each glue injection opening on the blade forming die.
Through the technical scheme, the original grouping type pouring mode is changed into unified management, the pouring direction and the pouring time of the resin are planned based on the pouring characteristics of the resin, and the quality and the efficiency of resin pouring are guaranteed. Meanwhile, by means of the pouring mode, the adaptation of the resin amount in each pouring area can be guaranteed, the problem that too much or too little resin is generated in the blade forming die is avoided, the pouring uniformity and controllability are guaranteed, the number of cavities in the blade after forming can be reduced, and the forming quality of the blade is improved.
Further, based on the above pouring duration and pouring sequence, pouring resin into each glue injection port on the blade forming mold includes:
selecting the resin pouring direction of the blade forming die, and setting the pouring sequence of each glue injection port;
the resin pouring duration T of each glue pouring opening is greater than T/v × s;
wherein, T is the resin amount required by the resin injection of the injection area corresponding to the injection port, v is the resin injection rate, and s is the aperture of the injection port;
and the pouring interval time delta t > t of two adjacent pouring areas in the resin pouring direction.
Through above-mentioned technical scheme, can guarantee that resin flows towards a direction when filling, avoid resin to take place the convection current in blade forming die and form the cavity, accurate control perfusion volume and perfusion rate guarantee the quality of pouring.
Further, based on the above pouring duration and pouring sequence, pouring resin into each glue injection port on the blade forming mold includes:
and based on the resin amount required by each perfusion area, metering and temporarily storing the resin to be perfused in advance, and then perfusing the metered resin to be perfused to the set perfusion area through the glue injection pipe.
Through above-mentioned technical scheme, calculate each required resin volume of filling the region in advance, and then adopt the mode of once only filling fast to realize filling, promote when guaranteeing to fill the precision and fill efficiency.
Further, the method further comprises:
arranging heat preservation felts and/or heating devices on each pouring area;
and detecting the temperature of each perfusion area, removing the heat preservation felt when the temperature is greater than a set value, and covering the heat preservation felt or heating by using a heating device when the temperature is less than the set value.
Through the technical scheme, the temperature of the resin in the blade forming die can be accurately controlled, and the resin can be ensured to uniformly flow between the layers.
An integrated resin infusion system applied to wind power blade manufacturing comprises storage tanks, a metering device, a plurality of infusion pipelines and a controller, wherein the storage tanks are sequentially communicated and used for intensively storing resin to be infused, the metering device is used for metering the resin output from the storage tanks, and the infusion pipelines are used for introducing the metered resin into each infusion area on a blade forming die;
a first switch valve is arranged between the material storage tank and the metering device, a second switch valve is arranged between the plurality of filling pipelines and the glue injection ports of the blade forming molds corresponding to the filling pipelines, and the first switch valve and the second switch valve are in control connection with the controller;
the controller is in signal connection with the metering device, receives and responds to the metering signal output by the metering device, and outputs a control signal to control the actions of the first switch valve and the second switch valve.
Through above-mentioned technical scheme, in integrating the resin of dispersion storage among the prior art to a storage tank, avoid the resin to sneak into the air in conveying pipeline transfer process, also can realize the accurate control to whole filling process simultaneously, guarantee the quality and the efficiency of pouring, reduce the cost of labor.
Further, the metering device comprises an electronic platform scale and a breathing bag arranged on the electronic platform scale, and the breathing bag is communicated with the material storage tank and the filling pipeline;
and the metering output end of the electronic platform scale is in signal connection with the controller and outputs a weight metering signal.
Through above-mentioned technical scheme, can treat the weight of filling the resin and measure, because the density of resin is invariable, through measuring the weight alright in order to obtain the volume of waiting to fill the resin, realize the accurate control of resin infusion volume from this, guarantee the quality and the efficiency of filling.
Further, metering device still includes the range sensor subassembly that is used for detecting the volume size of breathing bag, the signal output part and the controller signal connection of range sensor subassembly detect and output the volume measurement signal of breathing bag.
Through above-mentioned technical scheme, can directly treat the resin volume of pouring and measure, guarantee to pour into the accuracy of resin volume in each pouring region, be favorable to promoting and pour efficiency and pouring quality.
Further, the filling pipeline includes one fill be responsible for and many with fill the branch pipe that fills that is linked together of being responsible for, fill be responsible for with breathe the bag and be linked together, many fill the branch pipe and be linked together with each injecting glue mouth on the blade forming die respectively, many all be provided with on the branch pipe fills the second ooff valve.
Through above-mentioned technical scheme, utilize the controller to the control of on-off valve just can realize the control to the resin filling state of each injecting glue mouth on the blade forming die for overall system harmony is better when filling resin, is favorable to promoting the efficiency and the quality of filling resin.
Further, a heat preservation felt is covered on the blade forming die;
the filling main pipe and/or the filling branch pipe are/is provided with a heating element for heating resin in the pipeline, and the heating element is in control connection with the controller.
Through above-mentioned technical scheme, can heat the resin in the local area or the pipeline of blade forming die, ensure to pour into the homogeneity of each resin temperature that pours into the region, prevent that the resin from forming the thermal shock in blade forming die, guarantee the quality of pouring.
Compared with the prior art, the invention has the following beneficial effects:
the existing grouping type pouring mode is changed into unified management, the pouring direction and the pouring time of the resin are planned based on the pouring characteristics of the resin, and the quality and the efficiency of resin pouring are guaranteed. Meanwhile, by means of the pouring mode, the adaptation of the resin amount in each pouring area can be guaranteed, the problem that too much or too little resin is generated in the blade forming die is avoided, the pouring uniformity and controllability are guaranteed, the number of cavities in the blade after forming can be reduced, and the forming quality of the blade is improved.
Drawings
FIG. 1 is a general schematic diagram of a prior art irrigation system;
FIG. 2 is a schematic flow diagram of the perfusion method of the present application;
FIG. 3 is a general schematic view of the perfusion system of the present application;
fig. 4 is a schematic diagram of the perfusion system.
Reference numerals: 1. a material storage tank; 2. a metering device; 3. a filling pipeline; 4. a first on-off valve; 5. a second on-off valve; 6. an electronic platform scale; 7. a breathing bag; 8. a ranging sensor assembly; 9. a barrel body; 10. pouring a main pipe; 11. filling a branch pipe; 12. a blade forming die; 13. a glue injection port; 14. a heating member.
Detailed Description
The present invention will be described in further detail with reference to examples and drawings, but the present invention is not limited to these examples.
An integrated resin infusion method applied to wind turbine blade manufacturing is shown in fig. 2 and mainly comprises the following steps:
s1, dividing pouring areas for a blade forming die 12 based on the position of a glue injection port 13 on the blade forming die 12 and numbering;
s2, calculating the resin amount required by each pouring area according to the thickness of the layers and the area of the pouring areas;
s3, planning the resin pouring duration and the resin pouring sequence of the glue pouring port 13 corresponding to each pouring area based on the layer structure, the position of the glue pouring port 13 and the resin pouring rate;
and S4, based on the pouring duration and the pouring sequence, pouring resin into each glue injection port 13 on the blade forming mold 12.
In the step S1, the characteristics of the layers of the pouring areas in the blade forming mold 12 are mainly considered, and different pouring areas are divided for the blade forming mold 12 by combining the flow characteristics during resin pouring.
In the step S3, the method further includes:
selecting the resin pouring direction of the blade forming die 12, and setting the pouring sequence of each glue injection port 13;
the resin pouring duration T of each glue pouring opening 13 is more than T/v × s; wherein T is the resin amount required for completing resin infusion in the infusion area corresponding to the above-mentioned glue injection port 13, v is the resin infusion rate, and s is the aperture of the glue injection port 13.
In order to avoid excessive opposite impact or mixed flow of the resin during pouring (which can prevent air in the paving layer from being extruded to form bubbles or form cavities in the resin), the pouring interval time delta t > t of two adjacent pouring areas in the resin pouring direction is set. Based on the above arrangement, only after the resin completes the injection of the same injection area or the associated injection area, the adjacent injection areas are further injected, for example, the injection is sequentially performed along the flowing direction of the resin, so that the uniformity of the injection is ensured.
Optionally, the step S4 further includes:
and based on the resin amount required by each perfusion area, metering and temporarily storing the resin to be perfused in advance, and then perfusing the metered resin to be perfused to the set perfusion area through the glue injection pipe. Based on above-mentioned technical scheme, calculate each required resin volume of infusing the region in advance, and then adopt the mode of once only pouring fast to realize infusing, guarantee each and infuse regional accurate nature of infusing, promote simultaneously and infuse efficiency.
Because the temperature of the resin can change during the pouring process, and the flowability of the resin at different temperatures is different, in order to ensure the uniformity and efficiency of the pouring, the method further comprises the following steps:
arranging heat preservation felts and/or heating devices on each pouring area;
and detecting the temperature of each perfusion area, removing the heat preservation felt when the temperature is greater than a set value, and covering the heat preservation felt or heating by using a heating device when the temperature is less than the set value. Thus, the temperature of the resin in the blade forming die 12 can be accurately controlled, and the resin can be ensured to flow uniformly among the layers.
In order to realize the method, the invention further provides an integrated resin infusion system applied to wind power blade manufacturing, as shown in fig. 3 and 4, the integrated resin infusion system comprises a storage tank 1, a metering device 2, a plurality of infusion pipelines 3 and a controller, wherein the storage tank 1 is sequentially communicated and arranged by using a pipe fitting and is used for intensively storing the resin to be infused, the metering device 2 is used for metering the resin output from the storage tank 1, and the infusion pipelines 3 are used for guiding the metered resin into each infusion area on a blade forming mold 12.
The storage tank 1 is used for storing resin to be poured and used as an integrated machine. A first switch valve 4 is arranged between the storage tank 1 and the metering device 2, and a second switch valve 5 is arranged between the plurality of filling pipelines 3 and the glue injection ports 13 of the corresponding blade forming molds 12. The first switch valve 4 and the second switch valve 5 are both configured as solenoid valves and are both in control connection with a controller.
In the embodiment of the present application, the controller is implemented by a PLC control module, a signal input end of the PLC control module is in signal connection with the metering device 2, receives and responds to the metering signal output by the metering device 2, and outputs a control signal to control the opening and closing of the first switch valve 4 and the second switch valve 5.
In this embodiment, the metering device 2 includes an electronic platform scale 6 and a breathing bag 7 disposed on the electronic platform scale 6, and the breathing bag 7 is communicated with the storage tank 1 and the filling pipeline 3 through a feeding hose. The breathing bag 7 is used as a resin carrier, so that the resin can be effectively prevented from contacting with the outside air in the transmission process, and the air is prevented from being mixed in the resin. The metering output end of the electronic platform scale 6 is in signal connection with the signal input end of the controller and outputs a weight metering signal. Based on the scheme, the weight of the resin to be poured can be measured when the resin is poured, and the volume of the resin to be poured can be obtained by measuring the weight due to the constant density of the resin, so that the accurate control of the resin pouring amount is realized, and the pouring quality and efficiency are ensured.
In order to make the resin metering more accurate, in the embodiment of the present application, the above-mentioned metering device 2 further includes a distance measuring sensor assembly 8 for detecting the volume size of the breathing bag 7. The signal output end of the distance measuring sensor assembly 8 is in signal connection with the controller, and detects and outputs the volume measuring signal of the breathing bag 7.
Optimally, because the breathing bag 7 is of a special-shaped structure, the volume of the breathing bag is difficult to directly measure, in the embodiment, the breathing bag 7 is placed in a hard barrel body 9, and the volume of the breathing bag 7 can be directly measured by detecting the height of the breathing bag 7. Correspondingly, the distance measuring sensor assembly 8 can adopt an infrared distance measuring sensor or a laser distance measuring sensor to detect the height of the breathing bag 7.
Through the combination of weight measurement signal and volume measurement signal, can be so that the measurement of resin is more accurate, make the volume of pouring of resin also more accurate from this, can promote the quality of pouring when guaranteeing to pour efficiency.
In practical application, in order to enable resin to be injected into each glue injection port 13 of the blade forming mold 12 in a controlled manner, the above-mentioned injection pipeline 3 includes an injection main pipe 10 and a plurality of injection branch pipes 11 communicated with the injection main pipe 10, the injection main pipe 10 is communicated with the breathing bag 7, the plurality of injection branch pipes 11 are respectively communicated with each glue injection port 13 of the blade forming mold 12, and the plurality of injection branch pipes 11 are provided with the second switch valves 5. Through controlling above-mentioned second ooff valve 5, alright in order to control the resin volume of filling of each injecting glue mouth 13, finally realize the accurate control of whole filling process.
In order to heat the resin in the local area or pipeline of the blade forming mold 12 and ensure the uniformity of the resin temperature in each pouring area, a heat insulation felt is covered on the blade forming mold 12.
The filling main pipe 10 and/or the filling branch pipe 11 are/is provided with a heating element 14 for heating resin in the pipeline, the heating element 14 is formed by an electric heating sheet or an electric heating wire and is arranged in the heat preservation felt or on the filling main pipe 10/the filling branch pipe 11, and for convenience of control, the power supply end of the heating element 14 is in control connection with a controller.
Above-mentioned scheme is through unified storage with the resin in a storage tank 1 and defeated material through controller and the defeated material of infusion pipeline 3 unified distribution, avoids the resin also can guarantee the homogeneity and the controllability of pouring when sneaking into the air in the filling process, promotes the quality and the efficiency of pouring, reduces personnel intensity of labour, reduces blade manufacturing cost.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.
Claims (3)
1. An integrated resin infusion method applied to wind power blade manufacturing is characterized by comprising the following steps:
dividing pouring areas for the blade forming die (12) based on the positions of the glue injection ports (13) on the blade forming die (12) and numbering;
calculating the resin amount required by each pouring area according to the thickness of the layer and the area of the pouring area;
planning the resin infusion duration and the infusion sequence of the glue injection port (13) corresponding to each infusion area based on the layer structure, the position of the glue injection port (13) and the resin infusion rate;
based on the pouring time and the pouring sequence, pouring resin into each glue injection opening (13) on the blade forming die (12), and the method specifically comprises the following steps:
selecting the resin pouring direction of the blade forming die (12), and setting the pouring sequence of each glue injection port (13);
-the resin infusion duration T > T/v × s of each infusion port (13);
wherein T is the resin amount required by the resin infusion of the infusion area corresponding to the glue injection port (13), v is the resin infusion rate, and s is the aperture of the glue injection port (13);
the pouring interval time delta t of two adjacent pouring areas is greater than t along the resin pouring direction;
based on the pouring time and the pouring sequence, resin is poured into each glue injection opening (13) on the blade forming die (12), and the method comprises the following steps:
based on the resin amount required by each perfusion area, measuring and temporarily storing the resin to be perfused in advance, and then perfusing the measured resin to be perfused to a set perfusion area through a glue injection pipe;
the method further comprises the following steps:
arranging heat preservation felts and/or heating devices on each pouring area;
and detecting the temperature of each perfusion area, removing the heat preservation felt when the temperature is greater than a set value, and covering the heat preservation felt or heating by using a heating device when the temperature is less than the set value.
2. The integrated resin infusion system applied to wind power blade manufacturing is characterized by comprising a storage tank (1) which is sequentially communicated and used for intensively storing resin to be infused, a metering device (2) for metering the resin output from the storage tank (1), a plurality of infusion pipelines (3) for guiding the metered resin into each infusion area on a blade forming die (12) and a controller;
a first switch valve (4) is arranged between the material storage tank (1) and the metering device (2), a second switch valve (5) is arranged between the plurality of filling pipelines (3) and the glue injection ports (13) of the corresponding blade forming molds (12), and the first switch valve (4) and the second switch valve (5) are in control connection with the controller;
the controller is in signal connection with the metering device (2), receives and responds to the metering signal output by the metering device (2), and outputs a control signal to control the actions of the first switch valve (4) and the second switch valve (5);
the metering device (2) comprises an electronic platform scale (6) and a breathing bag (7) arranged on the electronic platform scale (6), and the breathing bag (7) is communicated with the storage tank (1) and the filling pipeline (3);
the metering output end of the electronic platform scale (6) is in signal connection with the controller and outputs a weight metering signal;
the filling pipeline (3) comprises a filling main pipe (10) and a plurality of filling branch pipes (11) communicated with the filling main pipe (10), the filling main pipe (10) is communicated with the breathing bag (7), the plurality of filling branch pipes (11) are respectively communicated with each glue injection port (13) on the blade forming mold (12), and the plurality of filling branch pipes (11) are provided with the second switch valves (5);
the blade forming die (12) is covered with a heat preservation felt;
the filling main pipe (10) and/or the filling branch pipe (11) are/is provided with a heating element (14) for heating resin in the pipeline, and the heating element (14) is in control connection with the controller.
3. The integrated resin infusion system applied to wind power blade manufacturing according to claim 2, wherein the metering device (2) further comprises a distance measuring sensor assembly (8) for detecting the volume size of the breathing bag (7), and a signal output end of the distance measuring sensor assembly (8) is in signal connection with a controller to detect and output a volume metering signal of the breathing bag (7).
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| CN202110594152.9A CN113386373B (en) | 2021-05-28 | 2021-05-28 | Integrated resin infusion method and system applied to wind power blade manufacturing |
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| CN202110594152.9A CN113386373B (en) | 2021-05-28 | 2021-05-28 | Integrated resin infusion method and system applied to wind power blade manufacturing |
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| CN114407385B (en) * | 2022-01-26 | 2023-09-15 | 株洲时代新材料科技股份有限公司 | Resin matrix composite molding system and large-size wind power blade pouring system |
| WO2023175170A1 (en) * | 2022-03-18 | 2023-09-21 | Lm Wind Power A/S | In-line one-way vartm valve and infusion method |
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| AU2005213807A1 (en) * | 2004-02-17 | 2005-08-25 | Toray Industries, Inc. | RTM molding method and device |
| KR101621275B1 (en) * | 2008-05-16 | 2016-05-16 | 엑스이엠시 다르윈드 비.브이. | A method of manufacturing a turbine blade half, a turbine blade half, a method of manufacturing a turbine blade, and a turbine blade |
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