CN114789572A - Wind power blade tool and machining method of wind power blade - Google Patents
Wind power blade tool and machining method of wind power blade Download PDFInfo
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- CN114789572A CN114789572A CN202110102904.5A CN202110102904A CN114789572A CN 114789572 A CN114789572 A CN 114789572A CN 202110102904 A CN202110102904 A CN 202110102904A CN 114789572 A CN114789572 A CN 114789572A
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- 238000000034 method Methods 0.000 title claims abstract description 37
- 238000003754 machining Methods 0.000 title claims description 15
- 238000003825 pressing Methods 0.000 claims abstract description 34
- 238000003672 processing method Methods 0.000 claims abstract description 12
- 238000012545 processing Methods 0.000 claims abstract description 11
- 239000004744 fabric Substances 0.000 claims description 33
- 239000000835 fiber Substances 0.000 claims description 21
- 239000000463 material Substances 0.000 claims description 9
- 230000001681 protective effect Effects 0.000 claims description 4
- 229910000639 Spring steel Inorganic materials 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims 4
- 238000013461 design Methods 0.000 abstract description 24
- 230000008569 process Effects 0.000 abstract description 18
- 230000000694 effects Effects 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 239000011347 resin Substances 0.000 description 13
- 229920005989 resin Polymers 0.000 description 13
- 238000010586 diagram Methods 0.000 description 7
- 238000000605 extraction Methods 0.000 description 7
- 239000011162 core material Substances 0.000 description 6
- 239000002994 raw material Substances 0.000 description 6
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 239000003292 glue Substances 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
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- 239000011800 void material Substances 0.000 description 3
- 238000007792 addition Methods 0.000 description 2
- 238000012217 deletion Methods 0.000 description 2
- 230000037430 deletion Effects 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 238000009755 vacuum infusion Methods 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D99/00—Subject matter not provided for in other groups of this subclass
- B29D99/0025—Producing blades or the like, e.g. blades for turbines, propellers, or wings
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Abstract
The invention provides a wind power blade tool and a processing method of a wind power blade; the wind power blade tool is used for processing a wind power blade or a part thereof and comprises a die, a template and a pressing unit; the mould is provided with a corner structure, and the shape of the corner structure is matched with that of the corner part of the wind power blade; the following template is in a corner-shaped structure, and the following template is matched with the corner structure in shape; the pressing units are adjustably clamped on two sides of the mold to press the following template to the corner structure. Through the design, the wind power blade tool provided by the invention can continuously provide pressure in the forming process of the wind power blade, and the forming effect of the wind power blade is ensured. Moreover, the invention has reasonable and simple structure and lower manufacturing difficulty, does not need to carry out complicated reformation on the existing mould such as forming an air suction opening and the like, and has relatively lower cost.
Description
Technical Field
The invention relates to the technical field of wind power blade machining, in particular to a wind power blade tool and a machining method of a wind power blade.
Background
The blades of the wind driven generator are devices for the set to obtain wind energy, the aerodynamic appearance design of the blades directly influences the conversion efficiency between wind energy and electric energy, and the structural strength of the blades is a reliable guarantee for the stable operation of the blades. At present, the wind power blades are generally produced in large scale by adopting a vacuum infusion process method in the wind power blade manufacturing industry. Recent researches in related fields show that the design of the blunt trailing edge of the wind power blade can delay the occurrence of flow separation by reducing the adverse pressure gradient of the flow on the SS surface (blade leeward surface/Suction surface) of the blade, so as to achieve the purposes of expanding the stall margin of the airfoil and improving the lift-drag ratio of the airfoil. For a blade adopting a blunt trailing edge design, a vertical edge is generally required to be arranged at the trailing edge of a PS (Pressure Side) or SS (SS) surface, and a soft fiber fabric can be attached to the vertical edge to form a required blunt trailing edge shape after resin infusion.
Due to the blunt trailing edge design of the wind power blade, the problem of obvious resin enrichment of the vertical edge at the corner inside the cavity can be caused.
To address this problem, current industry solutions include: the glue spraying is used at the inner corner of the upright rib, so that the fiber fabric cloth layer has more contact area with the inner corner of the cavity when being laid, and the resin enrichment is reduced. Or, the fiber fabric cloth layer at the inner corner is flattened and compacted by using a roller tool in the process of laying the fiber cloth layer, so that the gap between the cloth layer and the cavity is reduced. In addition, Chinese patent application (invention number: CN111070730A) proposes a vacuum infusion method for wind power blades, wherein resin enrichment prevention air extraction areas are arranged at the corners of the blunt trailing edges, and the fiber fabric cloth layers at the corners of the blunt trailing edges can be further attached to the surfaces of the cavities through negative pressure brought by air extraction holes so as to prevent resin enrichment.
However, several of the above prior art solutions have certain drawbacks. By adopting the scheme of glue spraying or roller tooling, in the vacuum pumping process, the cloth layer generally has slight displacement and deformation under the action of strong atmospheric pressure, so that the cloth layer at the corner position is lifted, and a certain amount of rich resin still exists at the blunt trailing edge of the blade of the final finished product. On the other hand, the method of adding the extraction opening at the corner is relatively unfavorable for resin glue solution to infiltrate the fiber fabric layer, so that glue blockage of the extraction opening is easily caused, the inner side corner of the blunt trailing edge exists in the length direction of the whole blade, if the problem of resin enrichment is completely solved, the extraction opening is necessarily arranged in the length direction of the whole blade, the cost for modifying the mold is overhigh, and the difficulty in realizing the extraction opening in the area with the thinner blunt trailing edge is also relatively high.
Meanwhile, other parts of the wind turbine blade or other parts of the wind turbine blade at corners may have similar problems as described above.
Disclosure of Invention
The invention mainly aims to overcome at least one defect in the prior art and provide a wind turbine blade tool which has a better pressing and forming effect and does not need to be provided with an air suction opening.
Another main object of the present invention is to overcome at least one of the above drawbacks of the prior art, and to provide a method for machining a wind blade using the wind blade tool.
In order to realize the purpose, the invention adopts the following technical scheme:
according to one aspect of the invention, a wind power blade tool is provided; the wind power blade tool is used for processing a wind power blade or a part thereof, and comprises a die, a template and a pressing unit; the mould is provided with a corner structure, and the corner structure is matched with the shape of the corner part of the wind power blade or the part thereof; the following plate is of a corner-shaped structure, and the following plate is matched with the corner structure in shape; the pressing units are adjustably clamped on two sides of the die to press the following plates to the corner structures.
According to one embodiment of the invention, the pressing unit comprises a clamp which is elastic and comprises a connecting end part and a clamping end part, wherein the connecting end part is adjustably connected to the mould, and the clamping end part is used for abutting against the following plate so as to clamp the following plate to the corner structure.
According to one of the embodiments of the present invention, the mold is provided with a coupling seat to which the coupling end of the jig is coupled by a coupling member.
According to one embodiment of the present invention, the connecting socket has a wedge-shaped cross-section and has a connection surface inclined downward, and the connection end is connected to the connection surface.
According to one embodiment of the invention, the clamping end part of the clamp is of a corner-shaped structure, and the clamping end part is matched with the shape of the follow-up plate; and/or the material of the clamp comprises spring steel.
According to one embodiment of the invention, the length of the clamp in the length direction of the wind power blade is 5 cm-10 cm.
According to one embodiment of the invention, the wind power blade tool further comprises a protective pad; the protection pad is arranged between the follow-up plate and the mould.
According to one embodiment of the invention, the corner structure of the mould is matched to the shape of the corner part of the blunt trailing edge of the wind turbine blade.
According to another aspect of the invention, a processing method of a wind power blade is provided; the processing method of the wind power blade comprises the following steps:
providing a wind blade assembly as set forth in the claims and described in the above embodiments;
providing a multi-layer fabric over the mold, the multi-layer fabric covering the corner structure of the mold;
placing the following plate at the position of the corner structure of the mould, and clamping the following plate by using the pressing unit, so that the following plate compacts the fiber fabric on the corner structure of the mould, thereby forming the corner appearance of the wind power blade or the part thereof;
keeping the clamping posture of the wind power blade tool until the wind power blade or the part thereof is solidified;
and removing the wind power blade tool.
According to one embodiment of the invention, the wind power blade tool comprises a plurality of pressing units; in the step of clamping the following-shaped plate by using the pressing units, the pressing units are arranged at intervals along the length direction of the wind power blade, and the following-shaped plate is respectively clamped by using the pressing units.
According to one embodiment of the invention, a plurality of wind power blade tools are provided at intervals in the length direction of the blade, and the follow-up plates are clamped by the pressing units of the wind power blade tools.
According to one embodiment of the invention, the method further comprises the following steps:
and a defense protection pad is padded in front of the follow-up plate which is clamped by the pressing unit.
According to the technical scheme, the wind power blade tool and the processing method of the wind power blade have the advantages and positive effects that:
the wind power blade tool provided by the invention comprises a die, a template and a pressing unit. The mould has a corner structure matching the shape of the corner portion of the wind blade or a part thereof. The following template is of a corner-shaped structure matched with the shape of the corner structure. The pressing unit is used for clamping the following template to the corner structure. Through the design, the wind power blade tool provided by the invention can continuously provide pressure in the forming process of the wind power blade, and the forming effect of the wind power blade is ensured. Moreover, the invention has reasonable and simple structure and lower manufacturing difficulty, does not need to carry out complicated reformation on the existing mould such as forming an air suction opening and the like, and has relatively lower cost.
Drawings
Various objects, features and advantages of the present invention will become more apparent from the following detailed description of preferred embodiments of the invention, when considered in conjunction with the accompanying drawings. The drawings are merely exemplary of the invention and are not necessarily to scale. In the drawings, like reference characters designate the same or similar parts throughout the different views. Wherein:
FIG. 1 is a schematic structural diagram of a wind blade fixture according to an exemplary embodiment;
FIG. 2 is a schematic structural view of a wind blade fixture according to another exemplary embodiment;
FIG. 3 is a schematic structural view of a wind blade fixture according to another exemplary embodiment;
FIG. 4 is a schematic structural view of a wind blade fixture according to another exemplary embodiment;
fig. 5 to 8 are process diagrams of several steps of a method for machining a wind turbine blade according to an exemplary embodiment.
The reference numerals are illustrated below:
110. a mold;
111. a corner structure;
120. a following plate;
130. a clamp;
131. a connecting end portion;
1311. a bolt;
132. clamping the end;
140. a connecting seat;
141. a connecting surface;
150. a protective pad;
160. a suction cup;
210. a fiber fabric;
220. a core material;
230. and (3) a vacuum film.
Detailed Description
Exemplary embodiments that embody features and advantages of the invention are described in detail below. It is understood that the present invention is capable of many variations in different embodiments without departing from the scope of the invention, and that the description and drawings are to be taken as illustrative and not restrictive in character.
In the following description of various exemplary embodiments of the invention, reference is made to the accompanying drawings, which form a part hereof, and in which are shown by way of illustration various exemplary structures, systems, and steps in which aspects of the invention may be practiced. It is to be understood that other specific arrangements of parts, structures, example devices, systems, and steps may be utilized and structural and functional modifications may be made without departing from the scope of the present invention. Moreover, although the terms "over," "between," "within," and the like may be used in this specification to describe various example features and elements of the invention, these terms are used herein for convenience only, e.g., in accordance with the orientation of the examples as described in the figures. Nothing in this specification should be construed as requiring a specific three dimensional orientation of structures in order to fall within the scope of this invention.
Wind turbine blade tooling implementation mode one
Referring to fig. 1, a schematic structural diagram of the wind turbine blade fixture provided by the present invention is representatively shown, and specifically, a structural state of the wind turbine blade fixture when a wind turbine blade is processed is shown. In the exemplary embodiment, the wind turbine blade tooling proposed by the present invention is described by taking the machining applied to the corner portion of the wind turbine blade or its component with blunt trailing edge design as an example. It will be readily appreciated by those skilled in the art that the design of the present invention is applicable to other types of wind blades or other processes, such as the manufacture of web flanges, shell thickness variations, blade root baffle mounts, etc. Various modifications, additions, substitutions, deletions, or other changes may be made to the embodiments described below, and still fall within the scope of the principles of the wind blade assembly set forth herein.
As shown in fig. 1, in the present embodiment, the wind turbine blade tooling provided by the present invention can be used for processing a wind turbine blade or a component thereof, and the wind turbine blade tooling includes a mold 110, a template 120 and a pressing unit. Specifically, the mould 110 has a corner structure 111, which corner structure 111 matches the shape of a corner portion of a wind turbine blade or a part thereof. The conformal plate 120 is in a corner-shaped structure, and the conformal plate 120 matches the shape of the corner structure 111 of the mold 110. The pressing units are adjustably clamped on two sides of the mold 110 to press the following plate 120 against the corner structures 111 of the mold 110. Through the design, the wind power blade tool provided by the invention can continuously provide pressure in the forming process of the wind power blade, and the forming effect of the wind power blade is ensured. Moreover, the invention has reasonable and simple structure and lower manufacturing difficulty, does not need to carry out complicated reformation on the existing mould 110 such as arranging an extraction opening and the like, and has relatively lower cost.
Alternatively, as shown in fig. 1, in the present embodiment, the corner structure 111 of the mold 110 may be a substantially concave right-angle corner, for example, by providing a cavity on one side of the mold 110, so as to form the corner structure 111 by the cavity. In this regard, the follower 120, which matches the shape of the corner structure 111, may be generally right-angled, such as in the "L" configuration, etc. In other embodiments, when the corner structure 111 of the mold 110 has other shapes, the shape of the conformal plate 120 may be adjusted and matched accordingly, and the present embodiment is not limited thereto.
Alternatively, as shown in fig. 1, in the present embodiment, the pressing unit may include a jig 130. Specifically, the clamp 130 has elasticity, and the clamp 130 includes a connecting end portion 131 and a clamping end portion 132, the connecting end portion 131 is adjustably connected to the mold 110, and the clamping end portion 132 is used for abutting against the following board 120 to clamp the following board 120 to the corner structure 111. In other embodiments, other pressing and clamping devices may be used as the pressing unit instead of the clamp 130, such as a hydraulic system, a pneumatic system, etc., which is not limited to the present embodiment.
Further, based on the design that the pressing unit includes the clamp 130, in the present embodiment, the clamp 130 may have a sectional structure, and on this basis, the sections of the clamp 130 may be connected to each other by a rigid connection member. In other words, the connection end 131 and the clamping end 132 of the clamp 130 can be connected by a connection structure (e.g., a rigid connection member) that can maintain a rigid connection in the operating state of the clamp 130. Alternatively, the clamp 130 may be removable, collapsible or rotatable in the non-operative state. In other embodiments, the clamp 130 may also be an integral structure, and is not limited to this embodiment.
Alternatively, as shown in fig. 1, in the present embodiment, the mold 110 may be provided with the coupling seat 140. On this basis, the connection end 131 of the clamp 130 may be connected to the connection seat 140 by a connection member such as a bolt. Wherein the connecting socket 140 may be disposed at the other side of the mold 110 opposite to the corner structure 111 thereof. In other embodiments, the connecting seat 140 may also be disposed at other positions of the mold 110 for the connecting end 131 of the clamp 130 to connect, so as to achieve the clamping function of the clamp 130, which is not limited to this embodiment.
Further, as shown in fig. 1, based on the design that the connection seat 140 is provided on the mold 110, in the present embodiment, the section of the connection seat 140 may be substantially wedge-shaped, and the connection seat 140 having the wedge-shaped section may have a connection surface 141 facing downward. On this basis, the connecting end 131 of the clamp 130 may be connected to the connecting surface 141, for example, removably connected to the connecting surface 141 by a connector such as a bolt. Through the above design, the present invention can utilize the cooperation of the connecting end 131 of the clamp 130 and the connecting surface 141 which is inclined downwards, so that the clamp 130 can provide the clamping force to the conformal plate 120 in the horizontal direction and the vertical direction by utilizing the connecting surface 141 which is inclined downwards, and the clamping and fixing effect of the clamp 130 on the mold 110 is further optimized.
Alternatively, as shown in fig. 1, in the present embodiment, the clamping end portion 132 of the clamp 130 may have a substantially corner-like structure, and the clamping end portion 132 having the corner-like structure may match the shape of the conformal plate 120. For example, while the corner structure 111 of the mold 110 may be a substantially right-angled concave corner, the follower plate 120 may be a substantially right-angled corner, and the clamping end 132 matching the shape of the follower plate 120 may be a right-angled corner, such as an "L" -shaped structure, a "L" -shaped structure, or the like. Through the design, when the clamp 130 applies pressure towards the corner structure 111 of the mold 110 to the conformal plate 120 through the clamping end 132, the clamping end 132 can be pressed and contacted with the conformal plate 120 more closely, and the clamping effect is further improved. In other embodiments, when the corner structure 111 of the mold 110 has other shapes, the shape of the clamping end 132 can be correspondingly adjusted and matched with the following plate 120. Of course, the clamping end 132 of the clamp 130 may also be provided with a corner-like structure that does not completely match the shape of the conformal plate 120, but it is ensured that the clamp 130 can apply a pressure on the conformal plate 120 towards the corner structure 111 of the mold 110 with the clamping end 132. The clamping end 132 of the clamp 130 may not have a corner-like structure, but may have a plate-like structure, for example, without being limited to this embodiment.
Alternatively, in the present embodiment, the material of the clamp 130 may include spring steel. In other embodiments, the clamp 130 may be made of other elastic materials, and is not limited to this embodiment.
Optionally, in this embodiment, the wind turbine blade tooling provided by the present invention may include a plurality of pressing units, for example, a plurality of clamps 130, and the clamps 130 may be arranged in the length direction of the mold 110 at intervals. Accordingly, when the wind power blade tool is used for machining the wind power blade, the length direction of the die 110 is the length direction of the wind power blade, so that the wind power blade tool can clamp and position a plurality of positions of the wind power blade through the plurality of clamps 130 in the length direction of the wind power blade. On this basis, the length of each clamp 130 in the length direction of the wind turbine blade can be flexibly selected according to the length of the wind turbine blade, the distance between adjacent clamps 130, and the number of required clamps 130 (i.e., the number of the reinforcement positioning points). Note that, the longitudinal direction of the mold 110 or the longitudinal direction of the wind turbine blade may be substantially perpendicular to the paper surface in the drawing.
Alternatively, the length of the conformal plate 120 in the length direction of the wind power blade may be 0.8m to 1.2m, such as 0.8m, 0.9cm, 1m, 1.2m, and the like. In other embodiments, the length of the conformal plate 120 in the length direction of the wind turbine blade may also be less than 0.8m, or may be greater than 1.2m, for example, 0.7m, 1.25m, and the like, and is not limited to this embodiment.
Alternatively, the length of the clamp 130 in the length direction of the wind power blade may be 5cm to 10cm, for example 5cm, 7cm, 9.5cm, 10cm, and the like. In other embodiments, the length of the clamp 130 in the length direction of the wind turbine blade may also be less than 5cm, or may be greater than 10cm, for example, 4cm, 10.5cm, and the like, which is not limited to this embodiment. On the basis, based on the size design of the following-shaped plate 120 and the clamp 130, the connecting position of the clamp 130 and the following-shaped plate 120 can be adjusted according to the actual situation on site.
Optionally, as shown in fig. 1, in this embodiment, the wind turbine blade tool provided by the present invention may further include a protection pad 150. Specifically, the protection pad 150 is disposed between the slave plate 120 and the mold 110. On the basis, when the wind turbine blade tooling clamps the raw material film (such as the vacuum film 230) of the wind turbine blade by using the clamp 130, the clamping end portion 132 of the clamp 130 presses against the template 120, the template 120 presses against the protection pad 150, and the protection pad 150 presses against the raw material film, so as to press and fix the raw material film to the corner structure 111 of the mold 110. Through the design, on the basis of ensuring the wind power blade to be clamped, the protective pad 150 can be used for providing a protective function, and the damage to a raw material film material of the wind power blade in the process of pressing and positioning the follow-up plate 120 is avoided.
Further, based on the design that the wind turbine blade tool includes the protection pad 150, in this embodiment, the protection pad 150 may be made of a cotton material or a cloth material.
Further, based on the design that the wind turbine blade tooling contains the protection pad 150, in this embodiment, the protection pad 150 may cover the whole of the template 120 in the length direction of the wind turbine blade. In other words, the length of the protection pad 150 is greater than or equal to the length of the follower plate 120 in the length direction of the wind turbine blade.
Optionally, since the main beam positioning tooling base is disposed on the existing main mold of the wind turbine blade, the base can be used as the connecting seat 140 to fixedly connect the connecting end portion 131 of the clamp 130.
Alternatively, in the present embodiment, the corner structure 111 of the mold 110 may match the shape of the corner portion of the blunt trailing edge of the wind turbine blade. In other embodiments, the shape of the corner structure 111 of the mold 110 may also match the shape of the corner part of other positions of the wind turbine blade or its components, and is not limited to this embodiment.
Wind power blade tool implementation mode two
Based on the above detailed description of an exemplary embodiment of the wind turbine blade tool provided by the present invention, a second exemplary embodiment of the wind turbine blade tool provided by the present invention will be described below with reference to fig. 2.
Referring to fig. 2, a schematic structural diagram of another embodiment of the wind turbine blade fixture provided by the present invention is representatively shown, and specifically shows a structural state of the wind turbine blade fixture when the wind turbine blade fixture is used for processing a wind turbine blade. In this exemplary embodiment, the wind turbine blade tool proposed by the present invention is substantially the same as the first embodiment described above, and the design of this embodiment different from the first embodiment will be described below.
As shown in fig. 2, in the present embodiment, the connecting socket 140 may have a substantially rectangular cross-section, and on this basis, the connecting end 131 of the jig 130 is connected to one surface of the connecting socket 140 in the vertical direction. In other embodiments, the shape of the connecting seat 140 may be flexibly selected based on the fact that the connecting end 131 and the clamping end 132 of the clamp 130 are respectively clamped on both sides of the mold 110, which is not limited to this embodiment.
It should be noted that, since the rectangular connection seat 140 only can provide the clamp 130 with a horizontal clamping force on the follower 120, in order to enable the clamp 130 to provide a vertical clamping force on the follower 120 at the same time, the length of the clamp 130 inside the cavity of the mold 110 may be designed to be greater than the length thereof outside the cavity, for example, referring to the structural design that the connection end 131 of the clamp 130 is higher than the clamping end 132 in fig. 2, so that a vertically downward pressure can be generated by interference fit when the clamp 130 is fixed.
Wind power blade tool implementation mode III
Based on the above detailed description of two exemplary embodiments of the wind turbine blade tool proposed by the present invention, another exemplary embodiment of the wind turbine blade tool proposed by the present invention will be described below with reference to fig. 3.
Referring to fig. 3, a schematic structural diagram of a third embodiment of the wind turbine blade tool provided by the present invention is representatively shown, and specifically shows a structural state of the wind turbine blade tool when the wind turbine blade tool is used for processing a wind turbine blade. In this exemplary embodiment, the wind turbine blade tool proposed by the present invention is substantially the same as the first and second embodiments described above, and the design of the present embodiment different from the first and second embodiments will be described below.
As shown in fig. 3, in the present embodiment, the mold 110 is not provided with the connection holder 140. On this basis, the connection end 131 of the jig 130 may be connected to the mold 110 by a suction cup. In other embodiments, the connecting end 131 of the clamp 130 may be directly connected to the mold 110 by other methods, and is not limited to this embodiment.
Wind power blade tool implementation mode four
Based on the above detailed description of three exemplary embodiments of the wind turbine blade tool proposed by the present invention, another exemplary embodiment of the wind turbine blade tool proposed by the present invention will be described below with reference to fig. 4.
Referring to fig. 4, a schematic structural diagram of a fourth embodiment of the wind turbine blade tool provided by the present invention is representatively shown, and specifically shows a structural state of the wind turbine blade tool when the wind turbine blade tool is used for machining a wind turbine blade. In this exemplary embodiment, the wind turbine blade tool proposed by the present invention is substantially the same as the first to third embodiments described above, and the design of the present embodiment different from the first to third embodiments will be described below.
As shown in fig. 4, in the present embodiment, the wind turbine blade tool provided by the present invention does not include the protection pad 150. On the basis, when the wind power blade fixture clamps and fixes the wind power blade, the clamping end 132 of the clamp 130 directly contacts with the raw material film material of the wind power blade and applies pressure to the raw material film material.
It should be noted herein that the wind blade tooling shown in the drawings and described in this specification are only a few examples of the wide variety of wind blade tooling that can employ the principles of the present invention. It should be clearly understood that the principles of the present invention are in no way limited to any of the details or any of the components of the wind blade assembly shown in the drawings or described in this specification.
Based on the above detailed description of several exemplary embodiments of the wind turbine blade tool provided by the present invention, a specific operation flow for processing a wind turbine blade by using the wind turbine blade tool will be briefly described below.
Firstly, the layering work of the wind power blade is carried out according to a normal layering process, such as the fiber fabric 210 → the core material 220 → the fiber fabric 210 → the vacuum film 230, when the vacuum film 230 is laid, a certain amount of vacuum film 230 allowance is reserved in the area where the follow-up plate 120 is arranged, and the core material 220 is not arranged in the part of the vacuum film 230, so that the vacuum film 230 is prevented from being tightened and damaged during the drawing. After the vacuum film 230 is laid, no vacuum is first applied, and the protection pad 150 is laid on the corner portion of the inner side of the blade where the slave plate 120 is expected to be installed, and then the slave plate 120 is placed. The clamp 130 can be opened by the hydraulic expansion device to be placed in the cavity of the mold 110, the clamp 130 is fixed to the connecting seat 140 by bolts at one side of the clamp 130 close to the outside of the cavity, and then the hydraulic expansion device is slowly released to enable the clamp 130 to clamp the follower plate 120. It is necessary to align the slave plate 120 at all times when releasing the hydraulic expansion apparatus so that the clamp 130 is sufficiently in contact with the slave plate 120 in both the vertical and horizontal directions. And finally, after the tool is installed, continuously vacuumizing, pouring and curing the product area according to the vacuumizing standard. The fixture is kept in the mounting posture until the blade is cured (including pre-curing and post-curing), and the fixture is dismantled by a pouring worker.
Method for processing wind power blade
Based on the above detailed description of several exemplary embodiments of the wind turbine blade tooling provided by the present invention, an exemplary embodiment of a method for processing a wind turbine blade provided by the present invention will be described below with reference to fig. 5 to 8
Referring to fig. 5 to 8, process schematic diagrams of several steps of the processing method of the wind turbine blade according to the present invention are representatively shown. In this exemplary embodiment, the processing method of the wind turbine blade proposed by the present invention is described by taking the processing applied to the corner portion of the wind turbine blade or the component thereof designed with the blunt trailing edge as an example. Those skilled in the art will readily appreciate that numerous modifications, additions, substitutions, deletions, or other changes may be made to the embodiments described below in order to adapt the inventive concepts of the present invention to other types of wind blades or other processes, and still fall within the scope of the inventive concepts of wind blade machining methods.
As shown in fig. 5 to 8, in the present embodiment, the processing method of a wind turbine blade provided by the present invention includes the following steps:
providing the wind power blade tool provided by the invention and in the embodiment;
providing a multi-layer fiber fabric 210 on the mold 110, the multi-layer fiber fabric 210 covering the corner structure 111 of the mold 110;
the following template 120 is placed at the position of the corner structure 11 of the mold 110, and the following template 120 is clamped by a pressing unit (e.g. a clamp 130), so that the following template 120 compacts the fiber fabric 210 to the corner structure 111 of the mold 110, thereby forming the corner part topography of the wind turbine blade or the part thereof.
Keeping the clamping posture of the wind power blade tool until the wind power blade or the part thereof is solidified;
and (5) dismantling the wind power blade tool.
As described above, according to the wind turbine blade processing method provided by the present invention, the conformal plate 120 of the wind turbine blade tool can be used to press the conformal plate 120 against the corner portion of the vacuum film 230 after the vacuum film 230 is laid, and the fixture 130 is used to apply pressure to the conformal plate 120 and transmit the pressure to the fiber fabric 210 (such as a cloth layer), so as to eliminate the void generated by the rich resin, and maintain the void in the subsequent molding process, thereby preventing the fiber fabric 210 from being lifted in the whole molding process. Through the design, the processing method of the wind power blade provided by the invention can continuously provide pressure in the forming process of the wind power blade, and the forming effect of the wind power blade is ensured.
Alternatively, in the present embodiment, for the step of laying the fiber fabric 210 and the vacuum film 230, the core material 220 may be further provided between the fiber fabric 210 and the vacuum film 230.
Alternatively, in the present embodiment, for the steps of laying the fiber fabric 210, the core material 220, and the vacuum film 230, the core material 220 may not be laid in a section of the region corresponding to the corner structure 111 of the mold 110, thereby forming a void region between the vacuum film 230 and the fiber fabric 210. On the basis, the shape and size of the conformal plate 120 can be matched with the gap area.
Optionally, in this embodiment, the conformal plate 120 is disposed between the fiber fabric 210 and the vacuum film 230, the conformal plate 120 may be a rigid lath such as a prefabricated composite material plate, a pultruded lath, a wood plate, a metal plate, a plastic plate, etc., the protection pad 150 is laid outside the vacuum film 230 corresponding to the conformal plate 120, so as to reduce the damage of the fixture 130 to the vacuum film 230, and the conformal plate 120 is integrally cured with other materials during the forming process of the wind turbine blade or the component thereof.
Optionally, in this embodiment, the wind turbine blade tool may include a plurality of clamps 130. On this basis, in the step of clamping the slave plate 120 by using the clamp 130, a plurality of clamps 130 may be arranged at intervals along the length direction of the wind turbine blade, and the slave plate 120 may be clamped by using the plurality of clamps 130, respectively.
Further, based on the process design of clamping the conformal plate 120 by using a plurality of clamps 130, in the present embodiment, different numbers of clamps 130 with different densities (i.e. intervals) may be correspondingly arranged according to the difference that the resin-rich problem may occur in each region in the length direction of the wind turbine blade. For example, in areas of the wind blade where a more severe resin rich problem may arise, a greater number of clamps 130 may be provided than in other areas, and the clamps 130 may be arranged with a smaller spacing.
Alternatively, in the present embodiment, the fixture 130 of the wind turbine blade tool may substantially cover the blade root region and the blade leaf region where the problem of resin enrichment is severe in the length direction of the blade. In other embodiments, the fixture 130 of the wind turbine blade tooling may also cover a length region of the entire blade, that is, a blade tip region, or only a blade root region, or only a blade leaf region, and may be flexibly selected according to a part of the wind turbine blade that may cause a resin-rich problem, which is not limited to this embodiment.
Alternatively, in the present embodiment, a plurality of wind turbine blade fixtures proposed by the present invention may be provided at intervals in the length direction of the wind turbine blade, and the pressing units of the wind turbine blade fixtures clamp the following plates 120.
Optionally, in this embodiment, the processing method of the wind turbine blade provided by the present invention may further include the following steps: before the plate 120 is clamped by the clamp 130, a protection pad 150 is arranged between the plate 120 and the vacuum film 230.
It should be noted herein that the methods of machining wind blades illustrated in the drawings and described herein are merely illustrative of the many types of machining methods that can employ the principles of the present invention. It should be clearly understood that the principles of the present invention are by no means limited to any details or any steps of the method of machining a wind turbine blade as illustrated in the drawings or described in the present specification.
In summary, the wind turbine blade tooling provided by the invention comprises a die, a template and a clamp. The mould has a corner structure matching the shape of the corner portion of the wind blade or a part thereof. The follow-up plate is of a corner-shaped structure matched with the corner structure in shape. The clamp has elasticity to clamp the follower plate to the corner structure. Through the design, the wind power blade tool provided by the invention can continuously provide pressure in the forming process of the wind power blade, and the forming effect of the wind power blade is ensured. Moreover, the invention has reasonable and simple structure and lower manufacturing difficulty, does not need to carry out complicated reformation on the existing mould such as forming an air suction opening and the like, and has relatively lower cost.
Exemplary embodiments of a wind turbine blade tool and a method for machining a wind turbine blade according to the present invention are described and/or illustrated in detail above. Embodiments of the invention are not limited to the specific embodiments described herein, but rather, components and/or steps of each embodiment may be utilized independently and separately from other components and/or steps described herein. Each component and/or step of one embodiment can also be used in combination with other components and/or steps of other embodiments. When introducing elements/components/etc. described and/or illustrated herein, the articles "a," "an," and "the" are intended to mean that there are one or more of the elements/components/etc. The terms "comprising," "including," and "having" are intended to be inclusive and mean that there may be additional elements/components/etc. other than the listed elements/components/etc. Furthermore, the terms "first" and "second" and the like in the claims and the description are used merely as labels, and are not numerical limitations of their objects.
While the wind blade tooling and the method of fabricating a wind blade according to the present invention have been described in terms of various specific embodiments, those skilled in the art will recognize that the invention can be practiced with modification within the spirit and scope of the claims.
Claims (13)
1. The utility model provides a wind-powered electricity generation blade frock, its characterized in that, wind-powered electricity generation blade frock is used for processing wind-powered electricity generation blade or its part, wind-powered electricity generation blade frock contains:
a mould having a corner structure matching the shape of a corner portion of the wind turbine blade or a component thereof;
the following template is of a corner-shaped structure, and the following template is matched with the corner structure in shape; and
and the pressing units are adjustably clamped on two sides of the mould so as to press the following plate to the corner structure.
2. The wind turbine blade tooling of claim 1, wherein the pressing unit comprises a clamp, the clamp is elastic and comprises a connecting end part and a clamping end part, the connecting end part is adjustably connected to the mold, and the clamping end part is used for abutting against the following plate so as to clamp the following plate to the corner structure.
3. The wind blade tooling of claim 2 wherein the clamp is a segmented structure, the segments of the clamp being interconnected by rigid connectors.
4. The wind blade tooling as set forth in claim 2 or 3, wherein the mold is provided with a connecting seat, and the connecting end of the jig is connected to the connecting seat through a connecting member.
5. The wind blade tooling of claim 4, wherein the connecting base is wedge-shaped in cross-section and has a connecting surface that is inclined downward, and the connecting end is connected to the connecting surface.
6. The wind blade tooling as claimed in claim 2 or 3, wherein the clamping end of the clamp is of a corner-like structure, and the clamping end matches the shape of the follow-up plate; and/or the material of the clamp comprises spring steel.
7. The wind power blade tool according to claim 1, wherein the length of the clamp in the length direction of the wind power blade is 5 cm-10 cm.
8. The wind blade tooling of claim 1, further comprising:
and the protective pad is arranged between the follow-up plate and the mould.
9. The wind blade tooling of claim 1, wherein the corner structure of the mold matches the shape of the corner portion of the blunt trailing edge of the wind blade.
10. A processing method of a wind power blade is characterized by comprising the following steps:
providing the wind power blade tool of any one of claims 1 to 9;
providing a plurality of layers of fabric over the mold, the plurality of layers of fabric covering the corner structures of the mold;
placing the following plate at the position of the corner structure of the mould, and clamping the following plate by using the pressing unit, so that the following plate compacts the fiber fabric on the corner structure of the mould, thereby forming the corner appearance of the wind power blade or the part thereof;
keeping the clamping posture of the wind power blade tool until the wind power blade or the part thereof is solidified;
and removing the wind power blade tool.
11. The processing method of the wind power blade as claimed in claim 10, wherein the wind power blade tool comprises a plurality of the pressing units; in the step of clamping the following-shaped plate by using the pressing units, the pressing units are arranged at intervals along the length direction of the wind power blade, and the following-shaped plate is respectively clamped by using the pressing units.
12. The method for machining the wind turbine blade according to claim 10, wherein a plurality of the wind turbine blade tools are provided at intervals in the length direction of the blade, and the follow-up plates are clamped by pressing units of the plurality of the wind turbine blade tools.
13. The method for processing the wind power blade according to claim 10, further comprising the steps of:
and a fortifying protection pad is arranged in front of the follow-up plate and clamped by the pressing unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110102904.5A CN114789572A (en) | 2021-01-26 | 2021-01-26 | Wind power blade tool and machining method of wind power blade |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110102904.5A CN114789572A (en) | 2021-01-26 | 2021-01-26 | Wind power blade tool and machining method of wind power blade |
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| CN114789572A true CN114789572A (en) | 2022-07-26 |
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| CN202110102904.5A Pending CN114789572A (en) | 2021-01-26 | 2021-01-26 | Wind power blade tool and machining method of wind power blade |
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| CN104936767A (en) * | 2013-02-07 | 2015-09-23 | 波音公司 | Laminate compaction using magnetic force |
| CN209037051U (en) * | 2018-11-05 | 2019-06-28 | 玉门市艾郎风电科技发展有限公司 | Wind-powered electricity generation blade anti-demoulding instrument |
| CN211994275U (en) * | 2019-12-27 | 2020-11-24 | 迪皮埃风电叶片(扬州)有限公司 | Wind-powered electricity generation blade trailing edge prefabricated flange strip transport frock |
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2021
- 2021-01-26 CN CN202110102904.5A patent/CN114789572A/en active Pending
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|---|---|---|---|---|
| CN104936767A (en) * | 2013-02-07 | 2015-09-23 | 波音公司 | Laminate compaction using magnetic force |
| CN209037051U (en) * | 2018-11-05 | 2019-06-28 | 玉门市艾郎风电科技发展有限公司 | Wind-powered electricity generation blade anti-demoulding instrument |
| CN211994275U (en) * | 2019-12-27 | 2020-11-24 | 迪皮埃风电叶片(扬州)有限公司 | Wind-powered electricity generation blade trailing edge prefabricated flange strip transport frock |
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| 长春第一汽车制造厂工装设计室: "《床夹具设计原理》", 长春：吉林人民出版社, pages: 206 * |
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