CN216466309U - Wind-powered electricity generation blade vacuum perfusion system - Google Patents
Wind-powered electricity generation blade vacuum perfusion system Download PDFInfo
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- CN216466309U CN216466309U CN202121533217.0U CN202121533217U CN216466309U CN 216466309 U CN216466309 U CN 216466309U CN 202121533217 U CN202121533217 U CN 202121533217U CN 216466309 U CN216466309 U CN 216466309U
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Abstract
The utility model provides a vacuum perfusion system for a wind power blade, which comprises a glue injection machine, a mould, a blade root partition glue supply structure, a blade leaf partition glue supply structure, a blade root partition glue guide structure, a blade leaf partition glue guide structure and a perfusion monitoring structure, wherein the blade root partition glue supply structure and the blade leaf partition glue supply structure are respectively provided with a buffer bag, a three-way clamping sleeve and a glue injection pipe; the glue guide structure of subregion in the leaf includes foraminiferous barrier film two, the regional water conservancy diversion net in the leaf, regional honeycomb duct in the leaf and joint strip two, and the regional honeycomb duct in the leaf is arranged along wind-powered electricity generation blade's span to the interval, fills the flowmeter that the monitoring structure includes a plurality of settings at the injecting glue mouth of root district honeycomb duct and the injecting glue mouth of the regional honeycomb duct in the leaf, has efficient, reduces the advantage of dry yarn risk, encapsulating volume quantitative control.
Description
Technical Field
The utility model relates to the technical field of wind power blade forming, in particular to a vacuum infusion system for a wind power blade.
Background
The quality of a wind power blade is crucial as the most critical component for converting wind energy into mechanical energy in wind power generation. With the development of the wind power blade production technology, the blade production technology is changed from a hand lay-up technology or a prepreg technology into a relatively stable vacuum infusion technology. The vacuum pouring process mainly comprises the steps of paving glass fiber cloth, sandwich materials and other auxiliary materials on a mould, conducting glue by utilizing a flow guide net, an ohmic pipe and a steel wire hose, manufacturing a negative pressure environment by utilizing an exhaust pipe, a vacuum bag film, a sealing rubber strip and a vacuum pump, and pouring in a mode of injecting glue on the molded surface of the mould and exhausting air on the flange side of the mould of the shell.
However, the filling method is affected by the glue supply speed of the glue machine, the glass fiber infiltration speed, the curvature of the mold surface, and the like. Under the influence of the factors, the situation that the glass fiber glue solution around the glue injection port is temporarily accumulated and other positions are not infiltrated is easily caused in the process of filling, and at the moment, the cost is increased due to excessive filling, or the glue solution overflows into the air extraction port to block the air extraction branch pipeline and the main pipeline; without further pouring, the blade dry yarn may have a significant defect due to insufficient glue.
From the above, how to ensure that the glue filling amount can meet the requirement of the glue content of the blade, and meanwhile, the control of the occurrence rate of the dry yarn defect of the blade is the target that the vacuum filling process needs to be improved urgently. Therefore, a new vacuum infusion system for wind turbine blades is needed to solve the existing defects.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the defects of the prior art and provide a wind power blade vacuum perfusion system which is high in realizability, high in efficiency, capable of controlling the glue filling quantity in a quantitative mode and reducing the risk of yarn drying and the risk of blockage of an air suction pipeline.
In order to achieve the purpose, the technical scheme of the utility model is realized as follows:
the utility model provides a vacuum perfusion system for a wind power blade, which comprises a glue injector, a mould, a material cloth layer, a blade root partition glue supply structure, a blade leaf partition glue supply structure, a blade root partition glue guide structure, a blade leaf partition glue guide structure and a perfusion monitoring structure, wherein the blade root partition glue supply structure and the blade leaf partition glue supply structure are respectively provided with a buffer bag, a three-way cutting sleeve and a glue injection pipe; the leaf subregion glue guide structure comprises a second isolating membrane with holes, a second leaf subregion flow guide net laid on the second isolating membrane with holes, a second leaf subregion flow guide pipe laid on the second leaf subregion flow guide net and communicated with the three-way clamping sleeve, and a second sealing rubber strip used for sealing the second leaf subregion flow guide pipe, wherein the leaf subregion flow guide pipes are arranged at intervals along the spanwise direction of the wind power blade, the filling monitoring structure comprises a plurality of flowmeters, and the flowmeters are arranged at a glue injection port of the flow guide pipe in the root region and a glue injection port of the second leaf subregion flow guide pipe.
The blade root partition glue supply structure is used for supplying glue liquid to a blade root area of the wind power blade, the blade root partition glue guide structure is used for guiding glue on the mould profile of the blade root area, the blade leaf partition glue supply system is used for supplying glue liquid to the blade leaf area of the wind power blade, and the blade leaf partition glue guide system is used for guiding glue on the mould profile of the blade leaf area, so that partition filling of the wind power blade is achieved. In the glue supply structure, the glue injection machine, the glue injection pipe, the buffer bag and the three-way clamping sleeve are connected through a steel wire hose, and the buffer bag of the glue supply structure in the blade root partition is arranged on a walking platform within 1-2 meters away from the blade root of the wind power blade. The parameters of the glue injection machine such as the injection speed, the diameter of the steel wire hose, the position of the buffer bag and the like can be flexibly adjusted along with the characteristics of the injection blade profile. The flow guide pipe is generally an ohmic pipe, and when the spanwise or chordwise perfusion distance of the flow guide pipe is short, materials such as a spiral sheath can be used for replacing the ohmic pipe. For a single ohmic tube, when the perfusion direction distance is long, the ohmic tube can be broken and increased to fill the glue ports or two glue ports are arranged on the whole ohmic tube, and double-side perfusion is carried out. The injecting glue mouth quantity on the honeycomb duct can be adjusted to the distance of filling according to the exhibition, and the spanwise distance of filling is longer, can increase the injecting glue mouth along the exhibition to the ohmic tube that distributes or set up two injecting glue mouths on the ohmic tube that distributes along the exhibition at whole root, carries out two sides and fills.
The perfusion monitoring structure comprises a flowmeter and a computer for receiving feedback information, wherein the flowmeter is arranged at the starting points of branch pipelines of the guide pipe at the root region and the guide pipe at the middle region of the blade leaf, which are provided with glue injection ports; when in pouring, the glue injection machine injects glue to the blade root subarea and the blade leaf subarea respectively, glue liquid flows through the flow meter to enter the glue guide structure of the molded surface of the mold, and when the glue injection amount meets the requirement, a corresponding valve on the glue injection port is closed, so that the quantitative control of the glue injection amount is realized, and the risk of dry yarn and the risk of blockage of an air suction pipeline are reduced.
In one embodiment, the mold comprises a punching type blade root filling area and a punching type blade leaf filling area, the blade root area guide pipe is arranged in the punching type blade root filling area, the blade root area guide pipes are distributed at intervals along the spanwise direction of the wind power blade, the length of the blade root area guide pipe is less than or equal to 25 m, the leaf middle area guide pipe is arranged in the punching type blade leaf filling area, the leaf middle area guide pipes are distributed at intervals along the spanwise direction of the wind power blade, and the length of the leaf middle area guide pipe is less than or equal to 30 m.
In one embodiment, the number of the material cloth layers below the guide pipe in the blade root area is greater than 40, the distance between the guide pipes in the blade root area along the chord direction of the wind power blade is less than or equal to 700 mm, or the number of the material cloth layers below the guide pipe in the blade root area is greater than 15 and less than or equal to 40, the distance between the guide pipes in the blade root area along the chord direction of the wind power blade is less than or equal to 850 mm, or the number of the material cloth layers below the guide pipe in the blade root area is less than 15, and the distance between the guide pipes in the blade root area along the chord direction of the wind power blade is less than or equal to 1200 mm.
In one embodiment, the mold comprises an embedded blade root perfusion area and an embedded blade leaf perfusion area, the embedded blade root perfusion area comprises an embedded part area and a non-embedded part area, the blade root area draft tube is arranged in the embedded blade root perfusion area, the blade root area draft tubes arranged in the embedded part area are distributed at intervals along the chord direction and the span direction of the wind power blade, the glue injection port of the blade root area draft tube distributed at intervals along the chord direction of the wind power blade in the embedded part area is positioned at the lowest point of the embedded part area, the blade root area draft tube distributed at intervals along the span direction of the wind power blade in the embedded part area is arranged at the lowest point of the embedded part area, the middle glue injection port of the blade root area draft tube distributed at intervals along the span direction of the wind power blade in the embedded part area is arranged at the middle of the blade root area draft tube distributed at intervals along the span direction of the wind power blade, the blade middle area draft tube is arranged in the embedded part area, the guide pipes in the middle blade area are distributed at intervals along the spanwise direction of the wind power blade, and the length of the guide pipes in the middle blade area is less than or equal to 30 m.
In one embodiment, the number of the material cloth layers below the guide pipe of the blade root region in the non-embedded part region is greater than 40, the distance between the guide pipes of the blade root region in the non-embedded part region along the chord direction of the wind power blade is less than or equal to 700 mm, or the number of the material cloth layers below the guide pipe of the blade root region in the non-embedded part region is greater than 15 and less than or equal to 40, the distance between the guide pipes of the blade root region in the non-embedded part region along the chord direction of the wind power blade is less than or equal to 850 mm, or the number of the material cloth layers below the guide pipe of the blade root region in the non-embedded part region is less than 15, and the distance between the guide pipes of the blade root region in the non-embedded part region along the chord direction of the wind power blade is less than or equal to 1200 mm.
Based on the number of piles on the regional position of filling, the regional size of filling and the material cloth layer below the honeycomb duct of honeycomb duct, the direction of arranging, length and the interval of rationally setting up different subregion honeycomb ducts can realize the different regulation of filling regional glue solution infiltration speed on the mould for fill efficiently, reduce dry yarn risk and aspiration line and block up the risk, avoid the waste of material.
In one embodiment, the blade root area flow guide net is arranged in the embedded blade root filling area, an isolation gap is arranged between the blade root area flow guide net arranged in the embedded part area and the blade root area flow guide net arranged in the non-embedded part area, the junction between the embedded part area and the non-embedded part area is disconnected in an isolation gap mode, the blade root area flow guide net is not laid, the infiltration speed of glue solution at the junction is adjusted better, and waste of the glue solution is avoided.
In one embodiment, the chord-wise distance of the guide pipe in the middle leaf area is less than or equal to 800 mm, and the chord-wise distance of the guide pipe in the middle leaf area for filling the girder area of the wind power blade is more than 300 mm. When the chord-wise distance of the pouring areas on the two sides of the girder of the wind power blade is smaller than 300mm, only the honeycomb duct is paved on the side of the girder on one side for pouring, and when the chord-wise distance of the pouring areas on the two sides of the girder is larger than 300mm, the pouring is carried out by adopting a method of paving and guiding the flow on the two sides of the girder.
In one embodiment, the tail ends of the blade root area guide pipes distributed at intervals in the spanwise direction of the wind power blade and the tail ends of the leaf area guide pipes distributed at intervals in the spanwise direction of the wind power blade are both covered with cloth-based adhesive tapes, the first sealing adhesive tape is pasted at a position 5-10 mm away from the pipe orifice of the blade root area guide pipe distributed in the spanwise direction of the wind power blade in the chordwise direction of the wind power blade, and the second sealing adhesive tape is pasted at a position 5-10 mm away from the pipe orifice of the leaf area guide pipe distributed in the spanwise direction of the wind power blade in the chordwise direction of the wind power blade. The sealing rubber strips are pasted along the chord direction of the wind power blade to divide the spanwise perfusion area.
In one embodiment, the cushion pocket of the lobe-partitioned glue supply structure is arranged at a height level with the highest point of the mold.
In one embodiment, each glue injection port on the guide pipe in the root area and each glue injection port on the guide pipe in the middle area are respectively and correspondingly provided with one flow meter. The flowmeter can select for use ultrasonic flowmeter, specifically install on the branch road that the injecting glue mouth on the honeycomb duct is connected, install in the department of 100 millimeters apart from three-way cutting ferrule, ultrasonic flowmeter's signal connection to mould heating program control's computer, during the pouring, set for the regional volume of filling that the injecting glue mouth corresponds, open injecting glue mouth valve injecting glue according to the technological requirement, when the total volume of filling of regional flowmeter control reaches and sets for the requirement, close the valve that corresponds the injecting glue mouth. The flowmeter can also be other wireless flowmeters or wired flowmeters, and the wired flowmeter can be arranged on the die, is wired together with the die heating unit and is connected to a computer.
Compared with the prior art, the vacuum perfusion system for the wind power blade has the following advantages:
the method has the advantages that the partitioned glue guiding and filling in the blade roots and the blades are carried out, the molded surface of the mold is partitioned by the sealing rubber strips, when glue in a certain area of the molded surface of the mold is not smooth, a glue injection port valve in the area can be opened in a targeted mode, glue liquid is prevented from being distributed to other areas, the problems that glue consumption in a filling process is unstable, dry yarn defects and pipeline blockage situations occur alternately are solved, the method has strong adaptability, the formation of the dry yarn defects can be effectively prevented, the glue consumption in the filling process is stabilized, the fluctuation of the filling consumption is reduced, the weight and the glue content of the blades are controlled, and the blades are easier to match; the arrangement direction, the length and the interval of the flow guide pipe are reasonably set based on the position of the filling area of the flow guide pipe, the size of the filling area and the number of layers of material cloth layers below the flow guide pipe, so that the adjustment of the glue solution infiltration speed of different filling areas on the die is realized, the filling efficiency is high, the defect of dry yarn of the blade and the risk of blockage of an air suction pipeline caused by excessive filling are reduced, and the waste of materials is avoided; the device has a pouring monitoring structure, can realize quantitative control of glue pouring quantity, reduces the defect occurrence rate and the cost generated by pipeline maintenance, and has a simple integral structure.
Other advantages of the present invention will be described in detail in the following detailed description of the utility model, which refers to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model.
In the drawings:
FIG. 1 is a schematic view of a blade root partition glue guiding structure of a pre-embedded type wind power blade vacuum perfusion system according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a junction of a root partition glue guiding structure and a leaf partition glue guiding structure in the embedded wind turbine blade vacuum infusion system according to the embodiment of the present invention;
fig. 3 is a schematic layout view of a flow meter of a blade root partition glue supply structure in a vacuum infusion system of an embedded wind turbine blade according to an embodiment of the present invention.
Description of reference numerals: 1 pre-buried type blade root filling area, 11 pre-buried part district, 12 non-pre-buried part district, filling area in 2 pre-buried type blade leafs, 31 along wind-powered electricity generation blade exhibition to the blade root district honeycomb duct that distributes, 32 along the blade root district honeycomb duct that wind-powered electricity generation blade chord direction distributes, 4 along wind-powered electricity generation blade exhibition to the leaf of distribution district honeycomb duct, 5 joint strip one, 6 buffer bags, 7 tee bend cutting ferrule, 8 ultrasonic flowmeter, 9 valves.
Detailed Description
To further explain the technical solutions of the present invention, the present invention will be described in detail below with reference to the accompanying drawings, in which like reference numerals refer to like parts.
Example one
The embodiment provides a wind power blade vacuum infusion system for infusion of a pre-buried wind power blade, which comprises an adhesive injection machine, a mold, a material cloth layer, a blade root partition adhesive supply structure, a blade leaf partition adhesive supply structure, a blade root partition adhesive guide structure, a blade leaf partition adhesive guide structure and an infusion monitoring structure. The blade root partition glue supply structure and the blade leaf partition glue supply structure are respectively provided with a buffer bag, a three-way clamping sleeve and a glue injection pipe, the glue injection pipe is used for communicating the glue injection machine, the buffer bag and the three-way clamping sleeve, the blade root partition glue guide structure comprises a first isolating membrane with a hole, a blade root partition flow guide net laid on the first isolating membrane with the hole, a blade root partition flow guide pipe laid on the blade root partition flow guide net and communicated with the three-way clamping sleeve, and a first sealing rubber strip 5 for blocking glue, and the blade root partition flow guide pipes are distributed at intervals along the spanwise chord direction of the wind power blade; the leaf subregion glue guide structure comprises a second isolating membrane with holes, a second leaf subregion flow guide net laid on the second isolating membrane with holes, a second leaf subregion flow guide pipe laid on the second leaf subregion flow guide net and communicated with the three-way clamping sleeve and a second sealing rubber strip used for plugging the second leaf subregion flow guide pipe, the second leaf subregion flow guide pipe is arranged at intervals along the unfolding direction of the wind power blade, the filling monitoring structure comprises a plurality of flowmeters, and the flowmeters are arranged at a glue injection port of the flow guide pipe in the leaf root region and a glue injection port of the second leaf subregion flow guide pipe.
Specifically, the mold comprises an embedded blade root perfusion area 1 and an embedded blade leaf perfusion area 2, wherein a blade root area draft tube is arranged in the embedded blade root perfusion area 1, as shown in fig. 1, the embedded blade root perfusion area 1 comprises an embedded part area 11 and a non-embedded part area 12, the blade root area draft tube arranged in the embedded part area 11 is distributed at intervals along the chord direction and the span direction of the wind power blade, the blade root area draft tube 32 distributed along the chord direction of the wind power blade in the embedded part area 11 is 200 mm away from a flange plate at one end of the embedded part area 11, the glue injection port of the blade root area draft tube 32 distributed along the chord direction of the wind power blade in the embedded part area 11 is positioned at the lowest point of the embedded part area 11, the blade root area draft tube 31 distributed along the span direction of the wind power blade in the embedded part area 11 is arranged at the lowest point of the blade root area draft tube distributed along the span direction of the wind power blade in the embedded part area 11, and the blade root area draft tube distributed along the span direction of the embedded part area 11 is provided with a glue injection port and the blade root area draft tube distributed at intervals is not more than 25 m, the middle leaf area guide pipe is arranged in the filling area 2 in the embedded blade, the middle leaf area guide pipes are distributed at intervals along the spanwise direction of the wind power blade, and the length of the middle leaf area guide pipe is less than or equal to 30 m.
In this embodiment, the number of the material cloth layers arranged below the blade root area guide pipe of the non-embedded part area 12 is greater than 40, and the distance between the blade root area guide pipes of the non-embedded part area 12 along the chord direction of the wind power blade is less than or equal to 700 mm. In other embodiments, the number of material cloth layers below the guide pipe of the blade root region in the non-embedded part region may be set to be greater than 15 and less than or equal to 40, and the chord-wise distance between the guide pipes of the blade root region in the non-embedded part region is less than or equal to 850 mm, or the number of material cloth layers below the flow pipe of the blade root region in the non-embedded part region may be set to be less than 15, and the chord-wise distance between the guide pipes of the blade root region in the non-embedded part region is less than or equal to 1200 mm.
In this embodiment, the blade root area current guide net is disposed in the embedded blade root perfusion area 1, an isolation gap is disposed between the blade root area current guide net disposed in the embedded part area 11 and the blade root area current guide net disposed in the non-embedded part area 12, the junction between the embedded part area 11 and the non-embedded part area 12 is disconnected in the isolation gap manner, and the blade root area current guide net is not laid, so that the infiltration speed of the glue solution at the junction can be better adjusted, and the waste of the glue solution is avoided.
In the embodiment, the chord-wise distance of the middle-leaf honeycomb duct is less than or equal to 800 mm, wherein the chord-wise distance of the middle-leaf honeycomb duct for pouring the girder region of the wind power blade is more than 300 mm. When the chord-wise distance of the pouring areas on the two sides of the girder of the wind power blade is smaller than 300mm, only the honeycomb duct is paved on the side of the girder on one side for pouring, and when the chord-wise distance of the pouring areas on the two sides of the girder is larger than 300mm, the pouring is carried out by adopting a method of paving and guiding the flow on the two sides of the girder.
In this embodiment, the ends of the blade root area draft tubes distributed at intervals in the spanwise direction of the wind power blade and the ends of the middle leaf area draft tubes distributed at intervals in the spanwise direction of the wind power blade are both covered with the cloth base adhesive tapes, as shown in fig. 2, the first sealing adhesive tape 5 is pasted at a position 5-10 mm away from the pipe orifice of the blade root area draft tube 31 distributed in the spanwise direction of the wind power blade in the chordwise direction of the wind power blade, and the second sealing adhesive tape is pasted at a position 5-10 mm away from the pipe orifice of the middle leaf area draft tube 4 distributed in the spanwise direction of the wind power blade in the chordwise direction of the wind power blade. And the first sealing rubber strip and the second sealing rubber strip are adhered along the chord direction of the wind power blade to divide the spanwise perfusion area.
In the glue supply structure of the embodiment, a glue injection machine, a glue injection pipe, a buffer bag and a three-way clamping sleeve are connected by a steel wire hose with the diameter of 25 mm, the speed of the glue injection machine is more than 30kg/min, the buffer bag of the blade root partition glue supply structure is arranged on a walking platform within 1-2 meters away from the blade root of the wind power blade, and a guide pipe in the blade root partition is an ohmic pipe with the diameter of 25 mm; in the zone glue supply structure in the leaves, the speed of the glue injection machine is more than 30kg/min, the buffer bags of the zone glue supply structure in the leaves are arranged at the height flush with the highest point of the mould, the surface density of a flow guide net in the zone in the leaves is 160 g/square meter, the diameter of the flow guide pipe in the zone in the leaves is 25 mm, and the sealing adhesive tape is 12 mm wide.
In other embodiments, parameters such as the pouring speed of the glue-injection machine, the diameter of the steel wire hose, the position of the buffer bag and the like can be flexibly adjusted along with the characteristics of the pouring leaf profile. The flow guide pipe is generally an ohmic pipe, and when the spanwise or chordwise perfusion distance of the flow guide pipe is short, materials such as a spiral sheath can be used for replacing the ohmic pipe. For a single ohmic tube, when the perfusion direction distance is long, the ohmic tube can be broken to increase glue injection ports or two glue injection ports are arranged on the whole ohmic tube, and double-side perfusion is carried out. The injecting glue mouth quantity on the honeycomb duct can be adjusted to the distance of filling according to the exhibition, and the spanwise distance of filling is longer, can increase the injecting glue mouth along the exhibition to the ohmic tube that distributes or set up two injecting glue mouths on the ohmic tube that distributes along the exhibition at whole root, carries out two sides and fills.
Based on the number of piles on the regional position of filling, the regional size of filling and honeycomb duct below material cloth layer of honeycomb duct, rationally set up arrangement direction, length and the interval of honeycomb duct, can realize the different regional glue solution infiltration speed's that fills regulation on the mould for it is efficient to fill, reduces dry yarn risk and aspiration line and blocks up the risk, avoids the waste of material.
In this embodiment, the perfusion monitoring structure includes a flow meter and a computer for receiving feedback information, as shown in fig. 3, the flow meter selects an ultrasonic flow meter 8, the ultrasonic flow meter 8 is arranged at the starting point of the branch pipeline with glue injection ports of the guide pipe in the root region and the guide pipe in the middle leaf region, and the flow meters are in one-to-one correspondence with the glue injection ports; when in pouring, the glue-injecting machine injects glue to the blade root subarea and the blade leaf subarea respectively, the glue solution flows through the buffer bag 6 and the flowmeter 7 to enter the glue-guiding structure of the molded surface of the mold, and the corresponding valve 9 on the glue-injecting port is closed when the glue-injecting amount meets the requirement, so that the quantitative control of the glue-injecting amount is realized, and the risk of dry yarn and the risk of blocking an air extraction pipeline are reduced. Ultrasonic flowmeter 8 installs 100 millimeters departments apart from three-way cutting ferrule, and ultrasonic flowmeter's signal connection is to the computer of mould heating program control, during pouring, sets for the regional quantity of pouring that the injecting glue mouth corresponds, opens injecting glue mouth valve injecting glue according to the technological requirement, when the total amount of pouring of regional flowmeter control reached and sets for the requirement, closes the valve that corresponds the injecting glue mouth. In other embodiments, the flow meter may be other wireless flow meters or wired flow meters, and the wired flow meter may be mounted on the mold, wired with the mold heating unit, and connected to a computer.
Example two
The embodiment provides a wind-power blade vacuum infusion system for infusion of a hole-punching type wind-power blade, which comprises an adhesive injection machine, a mold, a material cloth layer, a blade root partition adhesive supply structure, a blade leaf partition adhesive supply structure, a blade root partition adhesive guide structure, a blade leaf partition adhesive guide structure and an infusion monitoring structure. The blade root partition glue supply structure and the blade leaf partition glue supply structure are respectively provided with a buffer bag, a three-way cutting sleeve and a glue injection pipe, the glue injection pipe is used for communicating the glue injection machine, the buffer bag and the three-way cutting sleeve, the blade root partition glue guide structure comprises a first isolating membrane with a hole, a first blade root partition flow guide net laid on the first isolating membrane with the hole, a first blade root partition flow guide pipe laid on the first blade root partition flow guide net and communicated with the three-way cutting sleeve, and a first sealing rubber strip used for blocking glue, and the first blade root partition flow guide pipes are distributed at intervals along the spanwise direction of the wind power blade; the leaf subregion glue guide structure comprises a second isolating membrane with holes, a second leaf subregion flow guide net laid on the second isolating membrane with holes, a second leaf subregion flow guide pipe laid on the second leaf subregion flow guide net and communicated with the three-way clamping sleeve and a second sealing rubber strip used for plugging the flow guide pipe, wherein the second leaf subregion flow guide pipe of the leaf subregion glue guide structure is arranged at intervals along the spanwise direction of the wind power blade, the filling monitoring structure comprises a plurality of flowmeters, and the flowmeters are arranged at a glue injection port of the flow guide pipe in the root region and a glue injection port of the second leaf subregion flow guide pipe.
Specifically, the mould includes perforation type blade root filling area and the type that punches filling area in the blade leaf, and perforation type blade root filling area is located to blade root district honeycomb duct, and blade root district honeycomb duct is along the span direction interval distribution of wind-powered electricity generation blade and blade root district honeycomb duct length is less than or equal to 25 meters, and filling area in the type that punches blade leaf is located to leaf district honeycomb duct, and leaf middle zone honeycomb duct is along the span direction interval distribution of wind-powered electricity generation blade and leaf middle zone honeycomb duct length is less than or equal to 30 meters.
In this embodiment, the number of the material cloth layers below the guide pipe in the blade root area is greater than 40, and the distance between the guide pipes in the blade root area along the chord direction of the wind power blade is less than or equal to 700 mm. In other embodiments, the number of the material cloth layers below the guide pipe in the blade root area is more than 15 and less than or equal to 40, and the distance between the guide pipes in the blade root area along the chord direction of the wind power blade is less than or equal to 850 mm, or the number of the material cloth layers below the guide pipe in the blade root area is less than 15, and the distance between the guide pipes in the blade root area along the chord direction of the wind power blade is less than or equal to 1200 mm.
In the embodiment, the chord-wise distance of the middle-leaf honeycomb duct is less than or equal to 800 mm, wherein the chord-wise distance of the middle-leaf honeycomb duct for pouring the girder region of the wind power blade is more than 300 mm. When the chord-wise distance of the pouring areas on the two sides of the girder of the wind power blade is smaller than 300mm, only the honeycomb duct is paved on the side of the girder on one side for pouring, and when the chord-wise distance of the pouring areas on the two sides of the girder is larger than 300mm, the pouring is carried out by adopting a method of paving and guiding the flow on the two sides of the girder.
In this embodiment, the tail ends of the blade root area guide pipes distributed at intervals in the spanwise direction of the wind power blade and the tail ends of the leaf middle area guide pipes distributed at intervals in the spanwise direction of the wind power blade are covered with cloth-based adhesive tapes, the first sealing adhesive tape is pasted at a position 5-10 mm away from the pipe orifice of the blade root area guide pipe distributed in the spanwise direction of the wind power blade in the chordwise direction of the wind power blade, and the second sealing adhesive tape is pasted at a position 5-10 mm away from the pipe orifice of the leaf middle area guide pipe distributed in the spanwise direction of the wind power blade in the chordwise direction of the wind power blade. And the first sealing rubber strip and the second sealing rubber strip are adhered along the chord direction of the wind power blade to divide the spanwise perfusion area.
In the glue supply structure of the embodiment, a glue injection machine, a glue injection pipe, a buffer bag and a three-way clamping sleeve are connected by a steel wire hose with the diameter of 25 mm, the speed of the glue injection machine is more than 30kg/min, the buffer bag of the blade root partition glue supply structure is arranged on a walking platform within 1-2 meters away from the blade root of the wind power blade, and a guide pipe in the blade root partition is an ohmic pipe with the diameter of 25 mm; in the zone glue supply structure in the leaves, the speed of the glue injection machine is more than 30kg/min, the buffer bags of the zone glue supply structure in the leaves are arranged at the height flush with the highest point of the mould, the surface density of a flow guide net in the zone in the leaves is 160 g/square meter, the diameter of the flow guide pipe in the zone in the leaves is 25 mm, and the sealing adhesive tape is 12 mm wide.
In other embodiments, parameters such as the pouring speed of the glue-injection machine, the diameter of the steel wire hose, the position of the buffer bag and the like can be flexibly adjusted along with the characteristics of the pouring leaf profile. The flow guide pipe is generally an ohmic pipe, and when the spanwise or chordwise perfusion distance of the flow guide pipe is short, materials such as a spiral sheath can be used for replacing the ohmic pipe. For a single ohmic tube, when the perfusion direction distance is long, the ohmic tube can be broken to increase glue injection ports or two glue injection ports are arranged on the whole ohmic tube, and double-side perfusion is carried out. The injecting glue mouth quantity on the honeycomb duct can be adjusted to the distance of filling according to the exhibition, and the spanwise distance of filling is longer, can increase the injecting glue mouth along the exhibition to the ohmic tube that distributes or set up two injecting glue mouths on the ohmic tube that distributes along the exhibition at whole root, carries out two sides and fills.
Based on the number of piles on the regional position of filling, the regional size of filling and honeycomb duct below material cloth layer of honeycomb duct, rationally set up arrangement direction, length and the interval of honeycomb duct, can realize the different regional glue solution infiltration speed's that fills regulation on the mould for it is efficient to fill, reduces dry yarn risk and aspiration line and blocks up the risk, avoids the waste of material.
In this embodiment, the perfusion monitoring structure includes a flow meter and a computer for receiving feedback information, the flow meter selects an ultrasonic flow meter 8, the ultrasonic flow meter 8 is arranged at the starting point of the branch pipeline with glue injection ports of the guide pipe in the root region and the guide pipe in the middle leaf region, and the flow meters are in one-to-one correspondence with the glue injection ports; when in pouring, the glue-injecting machine injects glue to the blade root subarea and the blade leaf subarea respectively, the glue solution flows through the buffer bag 6 and the flowmeter 7 to enter the glue-guiding structure of the molded surface of the mold, and the corresponding valve 9 on the glue-injecting port is closed when the glue-injecting amount meets the requirement, so that the quantitative control of the glue-injecting amount is realized, and the risk of dry yarn and the risk of blocking an air extraction pipeline are reduced. Ultrasonic flowmeter 8 installs 100 millimeters departments apart from three-way cutting ferrule, and ultrasonic flowmeter's signal connection is to the computer of mould heating program control, during pouring, sets for the regional quantity of pouring that the injecting glue mouth corresponds, opens injecting glue mouth valve injecting glue according to the technological requirement, when the total amount of pouring of regional flowmeter control reached and sets for the requirement, closes the valve that corresponds the injecting glue mouth. In other embodiments, the flow meter may be other wireless flow meters or wired flow meters, and the wired flow meter may be mounted on the mold, wired with the mold heating unit, and connected to a computer.
According to the vacuum infusion system for the wind power blade, provided by the utility model, the partitioned glue guiding and infusion in the blade root and the blade leaf are carried out, the mould surface is partitioned by adopting the sealing rubber strips, when glue is not smoothly fed in a certain area of the mould surface, a glue injection port valve in the area can be pertinently opened, glue liquid is prevented from being shunted to other areas, the phenomena that the glue consumption of an infusion process is unstable, and the dry yarn defect and the pipeline blockage situation are alternately generated are solved, the vacuum infusion system has strong adaptability, can effectively prevent the formation of the dry yarn defect, stabilizes the glue consumption of the infusion process, reduces the infusion consumption fluctuation, controls the weight and the glue content of the blade, and is easier for blade matching; the arrangement direction, the length and the interval of the flow guide pipe are reasonably set based on the position of the filling area of the flow guide pipe, the size of the filling area and the number of layers of material cloth layers below the flow guide pipe, so that the adjustment of the glue solution infiltration speed of different filling areas on the die is realized, the filling efficiency is high, the defect of dry yarn of the blade and the risk of blockage of an air suction pipeline caused by excessive filling are reduced, and the waste of materials is avoided; the device has a pouring monitoring structure, can realize quantitative control of glue pouring quantity, reduces the defect occurrence rate and the cost generated by pipeline maintenance, and has a simple integral structure.
The above description is only an embodiment of the present invention, and it should be noted that any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the protection scope of the present invention.
Claims (10)
1. A wind power blade vacuum perfusion system comprises a glue injection machine, a mold and a material cloth layer, and is characterized by further comprising a blade root partition glue supply structure, a leaf partition glue supply structure, a blade root partition glue guide structure, a leaf partition glue guide structure and a perfusion monitoring structure, wherein the blade root partition glue supply structure and the leaf partition glue supply structure are respectively provided with a buffer bag, a three-way cutting sleeve and a glue injection pipe, the glue injection pipe is used for communicating the glue injection machine, the buffer bag and the three-way cutting sleeve, the blade root partition glue guide structure comprises a first isolating film with holes, a first blade root partition flow guide net laid on the first isolating film with holes, a first blade root partition flow guide pipe laid on the first blade root partition flow guide net and communicated with the three-way cutting sleeve, and a first sealing rubber strip used for blocking glue, and the first blade root partition flow guide pipes are distributed at intervals along the spanwise direction of the wind power blade or along the spanwise chord direction of the wind power blade; the leaf subregion glue guide structure comprises a second isolating membrane with holes, a second leaf subregion flow guide net laid on the second isolating membrane with holes, a second leaf subregion flow guide pipe laid on the second leaf subregion flow guide net and communicated with the three-way clamping sleeve, and a second sealing rubber strip used for sealing the second leaf subregion flow guide pipe, wherein the leaf subregion flow guide pipes are arranged at intervals along the spanwise direction of the wind power blade, the filling monitoring structure comprises a plurality of flowmeters, and the flowmeters are arranged at a glue injection port of the flow guide pipe in the root region and a glue injection port of the second leaf subregion flow guide pipe.
2. The vacuum infusion system for wind turbine blades according to claim 1, wherein the mold comprises an infusion area for the blade root of the perforated blade and an infusion area for the blade leaf of the perforated blade, the guide pipe for the blade root is disposed in the infusion area for the blade root of the perforated blade, the guide pipes for the blade root are spaced apart from each other along the span direction of the wind turbine blade, the length of the guide pipe for the blade root is less than or equal to 25 m, the guide pipe for the middle blade is disposed in the infusion area for the blade leaf of the perforated blade, the guide pipes for the middle blade are spaced apart from each other along the span direction of the wind turbine blade, and the length of the guide pipe for the middle blade is less than or equal to 30 m.
3. The wind turbine blade vacuum infusion system of claim 2, wherein the number of the material cloth layers arranged below the guide pipe of the blade root region is more than 40, the chord-wise spacing of the guide pipe of the blade root region along the wind turbine blade is less than or equal to 700 mm, or,
the number of the material cloth layers arranged below the guide pipe in the blade root area is more than 15 layers and less than or equal to 40 layers, the distance between the guide pipe in the blade root area and the chord direction of the wind power blade is less than or equal to 850 millimeters, or,
the number of the material cloth layers below the guide pipe in the blade root area is less than 15, and the distance between the guide pipe in the blade root area and the chord direction of the wind power blade is less than or equal to 1200 mm.
4. The wind power blade vacuum infusion system of claim 1, wherein the mold comprises an embedded blade root infusion area and an embedded blade leaf infusion area, the embedded blade root infusion area comprises an embedded part area and a non-embedded part area, the blade root area flow guide pipe is arranged in the embedded blade root infusion area,
the guide pipes of the blade root area arranged in the embedded part area are distributed at intervals along the chord direction and the spanwise direction of the wind power blade, the glue injection ports of the guide pipes of the blade root area of the embedded part area distributed at intervals along the chord direction of the wind power blade are positioned at the lowest point of the embedded part area, the guide pipes of the blade root area of the embedded part area distributed at intervals along the spanwise direction of the wind power blade are arranged at the lowest point of the embedded part area, the glue injection ports are arranged in the middle of the guide pipes of the blade root area of the embedded part area distributed at intervals along the spanwise direction of the wind power blade, and the length of the guide pipes of the blade root area distributed at intervals along the spanwise direction of the wind power blade is less than or equal to 25 m,
the guide pipe in the middle leaf area is arranged in a perfusion area in the embedded blade leaf, the guide pipes in the middle leaf area are distributed at intervals in the spanwise direction of the wind power blade, and the length of the guide pipe in the middle leaf area is less than or equal to 30 m.
5. The wind blade vacuum infusion system of claim 4, wherein the number of the material cloth layers arranged below the guide pipe of the root region of the non-embedded part region is more than 40, the distance between the guide pipes of the root region of the non-embedded part region along the chord direction of the wind blade is less than or equal to 700 mm, or,
the number of the material cloth layers arranged below the guide pipe of the blade root area of the non-embedded part area is more than 15 layers and less than or equal to 40 layers, the distance between the guide pipe of the blade root area of the non-embedded part area and the chord direction of the wind power blade is less than or equal to 850 millimeters, or,
the number of the material cloth layers below the guide pipe in the blade root area of the non-embedded part area is less than 15, and the distance between the guide pipes in the blade root area of the non-embedded part area along the chord direction of the wind power blade is less than or equal to 1200 mm.
6. The wind turbine blade vacuum infusion system of claim 4, wherein the root area current guide net is disposed in the pre-embedded blade root infusion area, and a separation gap is disposed between the root area current guide net disposed in the pre-embedded part area and the root area current guide net disposed in the non-pre-embedded part area.
7. The wind turbine blade vacuum infusion system of any one of claims 1 to 6, wherein the chordwise spacing of the mid-leaf nozzle is no greater than 800 mm, and wherein the chordwise spacing of the mid-leaf nozzle for infusing the wind turbine blade girder region is greater than 300 mm.
8. The vacuum infusion system for the wind turbine blade as claimed in any one of claims 1 to 6, wherein the ends of the blade root area draft tubes spaced apart in the spanwise direction of the wind turbine blade and the ends of the blade root area draft tubes spaced apart in the spanwise direction of the wind turbine blade are covered with cloth-based adhesive tapes, the first sealing adhesive tape is adhered to the position 5 to 10 mm away from the nozzle of the blade root area draft tube spaced apart in the spanwise direction of the wind turbine blade along the chord direction of the wind turbine blade, and the second sealing adhesive tape is adhered to the position 5 to 10 mm away from the nozzle of the blade root area draft tube spaced apart in the spanwise direction of the wind turbine blade along the chord direction of the wind turbine blade.
9. The wind turbine blade vacuum infusion system of any one of claims 1 to 6, wherein the cushion bag of the segmented glue supply structure in the blade is arranged at a height level with the highest point of the mould.
10. The wind-power blade vacuum infusion system as claimed in any one of claims 1 to 6, wherein each glue injection port on the guide pipe in the root region and each glue injection port on the guide pipe in the middle region are respectively provided with a flow meter.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121533217.0U CN216466309U (en) | 2021-07-06 | 2021-07-06 | Wind-powered electricity generation blade vacuum perfusion system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121533217.0U CN216466309U (en) | 2021-07-06 | 2021-07-06 | Wind-powered electricity generation blade vacuum perfusion system |
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| CN216466309U true CN216466309U (en) | 2022-05-10 |
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- 2021-07-06 CN CN202121533217.0U patent/CN216466309U/en active Active
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