CN211474325U - Wind-powered electricity generation blade finish prefabricated construction - Google Patents
Wind-powered electricity generation blade finish prefabricated construction Download PDFInfo
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- CN211474325U CN211474325U CN202020181627.2U CN202020181627U CN211474325U CN 211474325 U CN211474325 U CN 211474325U CN 202020181627 U CN202020181627 U CN 202020181627U CN 211474325 U CN211474325 U CN 211474325U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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- Y02E10/72—Wind turbines with rotation axis in wind direction
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Abstract
The utility model provides a wind-powered electricity generation blade surface lacquer prefabricated construction, because the surface that the substrate layer deviates from the gum layer is a smooth plane, smooth plane has less surface tension, the paint coating thickness that forms on its surface can be more even, and the internal defect still less, therefore the quality is higher; the surface of the substrate base material layer facing the gum layer is provided with a plurality of protruding parts, so that the binding force of the substrate base material layer and the paint coating is smaller than the binding force of the substrate base material layer and the gum layer, and therefore after the wind power blade surface paint prefabricated structure is used on a wind power blade base body, the paint coating can be separated from the prefabricated structure base body through external force, and the paint coating can be used for protecting the wind power blade. The wind power blade surface paint prefabricated structure is used for preparing the protective structure, large-area damage of the paint coating caused by sand erosion and rain erosion of an area with small paint coating thickness due to uneven paint coating thickness can be avoided, and accordingly the protective effect of the wind power blade is improved.
Description
Technical Field
The utility model relates to a wind-powered electricity generation blade field, concretely relates to wind-powered electricity generation blade finish prefabricated construction.
Background
Wind energy has been paid more and more attention to all countries in the world as a clean renewable energy source, and effective utilization of wind energy is beneficial to realizing diversification of energy structures and reducing environmental pollution. The design service life of the wind power blade is 20 years, once the wind power blade starts to operate, the wind power blade is corroded by rainwater, wind sand and the atmosphere, and meanwhile, the wind power blade is also subjected to aging of strong ultraviolet. In the high-speed operation process of the blade, erosion of wind sand and raindrops on the wind power blade is equivalent to plasma cutting, and cavities are easily formed on the surface of the blade. Research has shown that an increase in the surface roughness of the blades and the accumulation of defects will result in a 5% -30% reduction in the efficiency of power generation and may also result in a failure of the gearbox due to a destabilization of the operation of the blades. It is therefore important how to maintain efficient operation of the blade for a 20 year life cycle.
The protective effect of a wind turbine blade depends on the quality of the paint coating on the surface. The construction process of the existing wind power blade paint coating mainly comprises two steps: post-coating process and coating scheme of in-film gel coat. The post-coating process comprises the steps of paving fiber materials in a mould, pouring resin materials, demoulding after the fiber materials are solidified and molded, and then coating surface coatings; the coating scheme of the inner gel coat is to coat liquid coating in a wind power blade forming die, and lay fiber materials and pour resin materials after the coating is cured. Although the coating scheme of the inner gel coat can reduce the working procedure of the post-treatment of the blade to a certain extent and reduce the time of the post-treatment of the blade, the coating scheme also has some disadvantages: the coating quality of the in-mold gel coat is influenced by a plurality of factors such as the surface state of a wind power blade forming mold, the environment temperature and humidity, the mold temperature, the worker construction method, the time for subsequently paving fiber cloth and the like, and local appearance quality defects are easy to occur after the blades are demoulded; the coating thickness of each area cannot be guaranteed to be the same by direct construction in the die, and the coating thickness is uncontrollable, so that certain risks exist in the aspect of protection of the blade in the later period.
SUMMERY OF THE UTILITY MODEL
Therefore, the to-be-solved technical problem of the utility model lies in overcoming the uncontrollable defect of protection method thickness and quality of current wind-powered electricity generation blade to a wind-powered electricity generation blade finish prefabricated construction is provided.
The utility model provides a wind-powered electricity generation blade surface lacquer prefabricated construction, including prefabricated structure base member and paint coating, prefabricated structure base member is including the substrate layer, the gum layer of range upon range of setting and from type paper, wherein, the surface that the substrate layer deviates from the gum layer is a smooth plane, paint coating set up in on the smooth plane, the substrate layer is provided with a plurality of protruding portions towards the surface of gum layer.
Further, the height of the protrusions is 2-30 microns; the distance between the adjacent protruding parts is 2-500 micrometers.
Further, the protruding part is a discrete point-shaped protrusion or a strip-shaped protrusion.
Further, the shape of the punctiform protrusions is triangular cone, cuboid or frustum of pyramid.
Further, the width of the dot-shaped protrusions is 2-100 micrometers.
Further, along the direction perpendicular to the axial direction of the strip-shaped protrusions, the cross section of each strip-shaped protrusion is triangular, rectangular or trapezoidal.
Further, the width of the cross section of the strip-shaped protrusion is 2-100 micrometers along the direction perpendicular to the axial direction of the strip-shaped protrusion.
Further, the paint coating is a polyurethane layer, a polyaspartic acid ester resin layer, an acrylic resin layer or a fluoropolymer layer;
the back adhesive layer is a rubber type pressure-sensitive adhesive layer, an organic silicon type pressure-sensitive adhesive layer or an acrylic acid type pressure-sensitive adhesive layer;
the substrate base material layer is a plastic film, and the material of the plastic film is one of polyethylene glycol terephthalate, hard polyvinyl chloride, polyethylene, high-density polyethylene and polypropylene.
Further, the thickness of the paint coating is 100-500 microns;
the thickness of the substrate base material layer is 10-100 microns;
the thickness of the back glue layer is 2-30 microns.
The utility model discloses technical scheme has following advantage:
1. the utility model provides a wind-powered electricity generation blade surface lacquer prefabricated construction, because the surface that the substrate layer deviates from the gum layer is a smooth plane, smooth plane has less surface tension, therefore the wettability is better, thereby form the paint coating on this smooth surface and can make the thickness of paint coating more even, and the internal defect still less, therefore the quality is higher; and simultaneously, the surface of substrate layer towards the gum layer is provided with a plurality of protruding portions, makes the roughness of substrate layer towards paint coating is less than substrate layer towards the surface of gum layer, leads to substrate layer and paint coating's cohesion is less than substrate layer and gum layer's cohesion, consequently back on wind-powered electricity generation blade surface lacquer prefabricated construction is used for wind-powered electricity generation blade base member, can realize the separation of paint coating and prefabricated structure base member through external force, makes paint coating can be used for the protection of wind-powered electricity generation blade base member surface.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a wind turbine blade surface paint prefabricated structure provided in embodiment 1 of the present invention;
FIG. 2 is a schematic structural diagram of the lap joint of the paint prefabricated structures on the surface of the wind power blade in the embodiment of the utility model;
FIG. 3 is a schematic structural diagram of the butt joint of the paint prefabricated structures on the surfaces of the wind power blades in the embodiment of the present invention;
fig. 4 is a schematic structural view of a protective structure mold according to an embodiment of the present invention;
fig. 5 is a schematic structural view of a protective structure mold assembly according to an embodiment of the present invention;
FIG. 6 is a top view of a first embodiment of a wind blade skin base with a protective structural component in an embodiment of the present invention;
FIG. 7 is a top view of a second embodiment of a wind blade skin base with a protective structural component in an embodiment of the present invention;
reference numerals:
1-paint coating; 2-substrate layer; 3-a back glue layer; 4-release paper; 5-a protrusion; 6-a first layer of fibrous reinforcing material; 7-wind power blade skin substrate; 8-protective structure mould; 81-protective structure mold leading edge; 82-protective structure mold trailing edge; 83-protective structure mold assembly leading edge; 84-protective structure mold assembly trailing edge; 9-a second layer of fibrous material.
Detailed Description
The following examples are provided for better understanding of the present invention, and are not limited to the best mode, and do not limit the scope and content of the present invention, and any product that is the same or similar to the present invention, which is obtained by combining the features of the present invention with other prior art or the present invention, falls within the scope of the present invention.
The examples do not show the specific experimental steps or conditions, and can be performed according to the conventional experimental steps described in the literature in the field. The reagents or instruments used are not indicated by manufacturers, and are all conventional reagent products which can be obtained commercially.
Example 1
As shown in fig. 1, this embodiment provides a wind-powered electricity generation blade surface lacquer prefabricated construction, including prefabricated structure base member and paint coating 1, prefabricated structure base member is including the substrate layer 2, the gum layer 3 and the release paper 4 of range upon range of setting, and wherein, the surface that substrate layer 2 deviates from gum layer 3 is a smooth plane, and paint coating 1 sets up on smooth plane, and substrate layer 2 is provided with a plurality of protruding portions 5 towards the surface of gum layer 3.
According to the wind power blade surface paint prefabricated structure, the surface of the substrate base material layer 2, which is far away from the back glue layer 3, is a smooth plane, and the smooth plane has smaller surface tension, so that the wetting performance is better, the paint coating 1 is formed on the smooth surface, the thickness of the paint coating 1 is more uniform, the internal defects are fewer, and the quality is higher; simultaneously, the surface of substrate layer 2 towards gum layer 3 is provided with a plurality of protruding portions 5, the roughness of the surface of substrate layer 2 towards paint coating 1 is less than the surface of substrate layer 2 towards gum layer 3, lead to the cohesion of substrate layer 2 and paint coating 1 to be less than the cohesion of substrate layer 2 and gum layer 3, consequently, after wind-powered electricity generation blade surface lacquer prefabricated construction was used for the wind-powered electricity generation blade base member, can realize the separation of paint coating 1 and prefabricated structure base member through external force, make paint coating 1 can be used for the protection of wind-powered electricity generation blade base member surface.
Further, the height of the protrusions 5 is 2-30 micrometers; the spacing between adjacent protrusions 5 is 2-500 microns. The height of each protrusion 5 and the pitch between adjacent protrusions 5 may be the same or different, and are selected according to the actual situation.
As an alternative embodiment, the projections 5 are discrete point-like or strip-like projections. The strip-shaped bulges can be sequentially arranged in parallel or arranged in an intersecting manner, and can be selected according to actual conditions.
Furthermore, the shape of the punctiform protrusions is triangular cone, cuboid or prismoid; the width of the dot-shaped projections is 2-100 μm. It should be understood that the dot-shaped protrusions include, but are not limited to, the above shapes, and the shapes of the dot-shaped protrusions that make the surface of the substrate base material layer 2 facing the back adhesive layer 3 have a larger roughness are all within the protection scope of the present application.
Furthermore, along the direction vertical to the axial direction of the strip-shaped bulges, the cross section of the strip-shaped bulges is triangular, rectangular or trapezoidal; the width of the cross section of the strip-shaped bulge is 2-100 micrometers along the direction vertical to the axial direction of the strip-shaped bulge. It should be understood that the stripe-shaped protrusions include, but are not limited to, the above shapes, and the shapes of the stripe-shaped protrusions that make the surface of the substrate base material layer 2 facing the back adhesive layer 3 have a larger roughness are all within the protection scope of the present application.
Further, the paint coating 1 is a polyurethane layer, a polyaspartic acid ester resin layer, an acrylic resin layer or a fluoropolymer layer;
the back adhesive layer 3 is a rubber type pressure-sensitive adhesive layer, an organic silicon type pressure-sensitive adhesive layer or an acrylic acid type pressure-sensitive adhesive layer;
the substrate base material layer 2 is a plastic film, and the material of the plastic film is one of polyethylene terephthalate, hard polyvinyl chloride, polyethylene, high-density polyethylene and polypropylene.
Further, the thickness of the paint coating 1 is 100-500 microns; the thickness of the substrate base material layer 2 is 10-100 microns; the thickness of the back glue layer 3 is 2-30 microns.
Example 2
The embodiment provides a protective structure, and the preparation method of the wind power blade surface paint prefabricated structure provided in embodiment 1 comprises the following steps:
(1) tearing off release paper 4 of the wind power blade surface paint prefabricated structure, and sticking a plurality of wind power blade surface paint prefabricated structures on the inner surface of the protective structure mold through a back glue layer 3;
(2) forming a first fiber material layer on the wind power blade surface paint prefabricated structure;
(3) forming a first resin material in the first fiber material layer under a vacuum condition, and curing the first resin material to obtain a first fiber reinforced material layer 6;
(4) and after the first resin material is cured, physically separating the paint coating 1 from the substrate base material layer 2 under the action of external force to obtain the protective structure.
According to the preparation method of the protective structure, under the vacuum condition, air existing at the interface of the first fiber material layer, the first resin material, the first fiber material layer and the first resin material is exhausted, the first resin material permeates into the first fiber material layer, and the first fiber reinforced material layer 6 is formed after the first resin material is cured, so that the strength of the protective structure is improved, and meanwhile, the interface bonding force between the first resin material and the first fiber material layer is effectively enhanced, the possibility of peeling of the protective structure is reduced, the protective effect of the protective structure is ensured, and the protective life of the protective structure is prolonged; the wind power blade surface paint prefabricated structure is used for a protective structure, so that the uniformity of the thickness and the quality of the paint coating 1 in the protective structure can be improved, the large-area damage of the paint coating 1 caused by sand erosion and rain erosion of an area with small thickness of the paint coating 1 is avoided, and the protective effect of the protective structure is improved; meanwhile, the wind power blade surface paint prefabricated structure is formed on the surface of the protective structure in another die, and the protective structure is directly paved on the surface of the blade die when the blade is formed, so that the occupied time of the wind power blade forming die is reduced, and the production efficiency is improved; volatile organic gas is not generated in the preparation process of the protective structure, so that the protective structure is beneficial to the health of constructors and the environmental protection.
Further, after the first fiber material layer is formed on the side, away from the substrate base material layer, of the paint coating layer, the step of forming a demolding cloth on the first fiber material layer is further included, and the demolding cloth is torn off after demolding.
Further, in the step of injecting the first resin material into the first fiber material layer, the vacuum degree is not more than 40 mbar. When the vacuum degree is more than 40mbar, the first resin material diffuses at a very slow speed, and the wettability is very poor, so that the preparation process and the preparation effect of the first resin material are adversely affected, and the preparation of the protective structure is further affected. Further, the first resin material is formed by a vacuum infusion molding process or a vacuum bag hand lay-up method.
Further, the thickness of the first layer 6 of fibrous reinforcing material does not exceed 3mm, preferably the thickness of the first layer 6 of fibrous reinforcing material is the same as the thickness of the paint coating 1. The strength of the protective structure is mainly determined by the strength of the first fiber reinforced material layer, and the strength of the protective structure is controlled by controlling the strength of the fiber reinforced material layer.
Further, the first resin material is at least one of epoxy resin, vinyl resin, unsaturated polyester resin and polyurethane resin; the first fiber material layer adopts at least one of glass fiber, carbon fiber and aramid fiber as a fiber material; the first fiber material layer is one of chopped strand mat, fiber woven cloth and fiber paper. The strength of the protective structure is controlled by the choice of the type of fibres, the structural form and the type of first resin material of the first layer 6 of fibre-reinforced material.
Further, in the step of pasting a plurality of wind power blade surface paint prefabricated structures on the inner surface of the protective structure mold through the back glue layer 3, the adjacent wind power blade surface paint prefabricated structures are in butt joint or lap joint, and the preferred connection mode is lap joint. The resulting shielding structure by docking is shown in fig. 2. Wherein, the second fiber material layer 9 is arranged between the two paint coatings 1 to overlap the paint prefabricated structures on the surfaces of the adjacent wind power blades.
Specifically, during the overlap joint, as shown in fig. 3, at first peel off substrate layer 2 and paint coating 1 of two wind power blade surface paint prefabricated structures of overlap joint department respectively to the substrate layer 2 that will peel off cuts apart, makes two wind power blade surface paint prefabricated structures's substrate layer 2 dock mutually, places second fibrous material layer 9 in the middle of two paint coatings 1 afterwards. After the overlapping of the surface paint prefabricated structures of the adjacent wind power blades, when a first fiber material is laid above the overlapping structures and a first resin material is formed, the first resin material can permeate into the second fiber material layer 9, then a second fiber reinforced material layer is formed, so that the second fiber material layer 9 is connected with the two paint coatings 1, and compared with butt joint, the operation precision requirement is slightly low. The resulting structure is: the substrate base material layer and the back glue layer of the surface paint prefabricated structure of the adjacent wind power blade are in butt joint with each other, the paint coatings are in lap joint with each other, and a second fiber reinforced material layer is arranged between the two paint coatings at the lap joint. Because the structural strength of the lap joint is high, the large-area damage of the paint coating caused by the preferential damage of the position due to the fact that the joint of the two wind power blade surface paint prefabricated structures is not tight can be avoided, the structural strength of the wind power blade surface paint prefabricated structure interconnection structure is enhanced, and then the protection effect of the protection structure is enhanced.
Specifically, when the paint prefabricated structures on the surfaces of adjacent wind power blades are overlapped, the overlapping width of the two paint coatings 1 is 20-50mm, and the thickness of the second fiber material layer 9 is not more than 1mm, so that the protection effect of the overlapped part is ensured. Further, the fiber material used by the second fiber material layer 9 is glass fiber, carbon fiber, or aramid fiber; the second fiber material layer 9 is one of chopped strand mat, fiber woven cloth and fiber paper.
Further, the shape of the inner surface of the protective structure mold 8 is the same as the shape of at least part of the inner surface of the wind power blade mold; or the at least two protective structure molds 8 are assembled into a protective structure mold assembly, and the shape of the inner surface of the protective structure mold assembly is the same as that of at least part of the inner surface of the wind power blade mold. It should be noted that the wind power blade mold refers to a wind power blade upper skin mold or a wind power blade lower skin mold, the wind power blade skin base body 7 refers to a wind power blade upper skin base body or a wind power blade lower skin base body, and therefore the protective structure or the protective structure component obtained through preparation in the application is the same as the wind power blade upper skin or the wind power blade lower skin at least in local inner surface shape.
Further, the inner surface of the protective structure mold 8 or the protective structure mold assembly and the corresponding area of the front edge and the rear edge of the wind power blade are not adhered with the wind power blade surface paint prefabricated structure, so that after the wind power blade with the protective structure is obtained, the area is subjected to post-treatment such as reinforcement.
It should be noted that, the region of the inner surface of the protective structure mold corresponding to the front and rear edges of the wind power blade is referred to as the front and rear edges of the protective structure mold in this application, as shown in fig. 4, the front and rear edges of the protective structure mold are located at the edge of the inner surface of the protective structure mold, the length of the region of the wind power blade surface paint prefabricated structure which is not adhered to the region from the edge of the protective structure mold 8 is 50-250mm, the widths of the regions in the region along the edge of the protective structure mold 8 can be the same, and different widths can be reserved locally according to the design of local.
The internal surface of protective structure mould subassembly and the corresponding region in wind-powered electricity generation blade leading-trailing edge are for short protective structure mould subassembly leading-trailing edge in this application, as shown in fig. 5, protective structure mould subassembly leading-trailing edge is located protective structure mould subassembly internal surface edge, the regional length apart from protective structure mould subassembly edge of wind-powered electricity generation blade surface lacquer prefabricated construction of on-stick can be 50-250mm, along 8 interior everywhere width in this region in the edge of protective structure mould can be the same, also can be according to the design of the local reinforcement of blade leading-trailing edge, different width is reserved in part.
The manufacturing method for applying the protective structure obtained by the embodiment to the wind power blade comprises the following steps:
(1) forming a release agent layer on the inner surface of the wind power blade mould;
(2) placing the protective structure in the wind power blade mould and on the release agent layer;
(3) forming a wind power blade upper skin matrix or a wind power blade lower skin matrix in the protective structure to prepare a wind power blade skin matrix 7 with the protective structure, namely the wind power blade upper skin matrix or the wind power blade lower skin matrix;
(4) and sequentially bonding, closing the die, curing and releasing the upper skin base body and the lower skin base body of the wind power blade with the protective structure from a wind power blade die to prepare the wind power blade skin base body with the protective structure.
According to the protection method, the wind power blade skin base body is manufactured in the protection structure, so that the interface bonding force between the blade skin base body and the protection structure is enhanced, the possibility that the protection structure is peeled from the surface of the wind power blade is effectively reduced, and the protection effect is improved.
Specifically, when the shape of the inner surface of the protective structure mold or the protective structure mold component is the same as that of the inner surface of the wind power blade mold, the protective structure or the protective structure component obtained by preparation has the same aerodynamic shape as the wind power blade skin substrate, so that internal stress does not exist in the protective structure or the protective structure component when the protective structure or the protective structure component is used in the wind power blade, the possibility that the protective structure is peeled from the surface of the wind power blade is effectively reduced, and the protective effect is improved; the protective structure or the protective structure component obtained by preparation completely covers the surface of the blade, so that the operations such as large-area coating of the protective material on the surface of the blade and the like are not required after the wind power blade is manufactured, and the protective structure is prepared in the protective structure die and does not occupy the main forming time of the blade skin, so that the overall time of blade preparation and protective coating is effectively reduced, and the working efficiency is effectively improved; meanwhile, the protection of the region with irregular shape and large local curvature change in the wind power blade is simpler and more effective, and the whole protection effect of the wind power blade is ensured. When the shape of the inner surface of the protective structure mold or the protective structure mold component is the same as that of the inner surface of the wind power blade mold, the protective structure or the protective structure component obtained through preparation is locally covered on the wind power blade base body so as to locally protect and reinforce the region of the blade and improve the protective effect of the wind power blade. In addition, as the surface of the first fiber material layer is covered with the demolding cloth in the preparation process of the protective structure, the inner surface of the prepared protective structure has certain roughness, so that the protective structure and the blade skin base body have good interface performance, and the protective structure is further prevented from being stripped from the surface of the wind power blade.
Further, the step of forming the upper skin base body or the lower skin base body of the wind turbine blade in the protective structure includes: a third fibrous material layer, a core material layer, a second resin material. The preparation of the wind power blade skin substrate adopts a method universal to the existing blade industry, and the specific steps comprise: and sequentially paving a third fiber material, paving a core material, paving a vacuum material, vacuum-infusing a second resin material and pre-curing the second resin material in the protective structure. And sequentially carrying out bonding and die assembly on the upper skin matrix of the wind power blade and the lower skin matrix of the wind power blade, carrying out post-curing on the second resin material, and demoulding after the second resin material and the bonding material are completely cured to obtain the skin matrix of the wind power blade, which at least partially covers the protective structure.
Further, after a wind power blade skin substrate with a protection structure is obtained, reinforcing, trimming and priming paint coating are carried out on the areas, without the paint coatings 1, of the front edge and the rear edge of the wind power blade, and the specific operation can be reinforcing, polishing, large putty trimming, polishing, pinhole putty repairing, polishing and priming paint coating are carried out on the areas, without the paint coatings 1, of the front edge and the rear edge of the wind power blade; after the operation is finished, the front edge of the blade is coated with front edge protection paint or pasted with a front edge protection film.
Specifically, when the shape of the inner surface of the protective structure mold or the protective structure mold component is the same as that of the inner surface of the wind power blade mold, the prepared protective structure or protective structure component completely covers the surface of the wind power blade, and after the wind power blade is demolded, only the area without the paint coating 1 on the front edge and the rear edge of the wind power blade is required to be treated, so that the whole blade is prevented from being treated, the protective coating efficiency is improved, the generation of dust in the polishing process and the release of volatile organic compounds in the coating process are reduced, and the environment is more friendly; meanwhile, the method also solves the problem that the zero-distance butt joint operation of adjacent protective structures is difficult. Furthermore, in the step of placing a plurality of protective structures in the protective structure assembly in the wind power blade skin mold and on the second mold release layer, abutting or reserving gaps between adjacent protective structures, and after the wind power blade upper skin base body and the wind power blade lower skin base body with the protective structures are sequentially bonded, matched, cured and removed from the wind power blade skin mold, painting at the abutted positions or reserved gaps for repairing, wherein the wind power blade upper skin base body or the wind power blade lower skin base body with the protective structures are shown in fig. 6-7, the method can be adjusted according to the actual blade protection condition, and has certain flexibility while ensuring the effective protection of the blade and is adaptive to the large-scale development of the blade; further, when the reserved gap of the adjacent protective structures is placed in the wind power blade mould of the wind power blade skin mould, the gap is smaller than 3 cm; in addition, the operation of painting the paint at the butt joint or the reserved gap for repairing can be performed simultaneously with the painting operation of the front edge and the rear edge.
As another embodiment, when the shape of the inner surface of the protective structure mold or the protective structure mold component is the same as that of the inner surface of the local wind power blade mold, the prepared protective structure or protective structure component partially covers the surface of the wind power blade, and the area not covered by the protective structure or protective structure component can be protected by adopting other existing protection technologies; further, when at least two protective structures in the protective structure assembly are placed in the wind power blade skin mold and positioned on the second release agent layer, the adjacent protective structures are in butt joint or a gap is reserved, and after the wind power blade upper skin base body and the wind power blade lower skin base body with the protective structures are sequentially bonded, matched, cured and released from the wind power blade skin mold, paint is coated on the butt joint or the reserved gap for repairing; the operation of painting the joint or the reserved gap for repairing can be carried out simultaneously with the painting operation of the uncovered area or the front and rear edges of other protective structures.
It should be understood that the protective structure and the manufacturing method are equally applicable to other blade forming processes. Similarly, the protective structure is placed between the wind power blade mould and the blade skin material, and when the blade is released from the mould after being solidified and formed in the mould, the protective structure is at least partially covered on the surface of the blade.
It should be noted that the protective structure mold 8 or the protective structure mold assembly only needs to ensure that the shape of the inner surface of the protective structure mold is the same as that of the inner surface of the wind turbine blade mold, and does not require high mechanical strength, so that the preparation cost of the protective structure mold 8 is low.
Example 3
The embodiment provides a preparation method of a protective structure, and the wind power blade surface paint prefabricated structure provided by the embodiment 1 is used, and the preparation method comprises the following steps:
(1) tearing off release paper 4 of the wind power blade surface paint prefabricated structure, and pasting a plurality of wind power blade surface paint prefabricated structures on the inner surface of a protective structure die through a back glue layer 3 (the inner surface of the protective structure die is the same as the inner surface of the wind power blade die in shape), wherein the wind power blade surface paint prefabricated structure is not pasted at the edge of 250mm away from the front edge 81 of the protective structure die and the rear edge 82 of the protective structure die, and the adjacent wind power blade surface paint prefabricated structures are butted;
(2) laying glass fibers on the paint coating 1, wherein the glass fibers are chopped strand mats, depositing epoxy resin in the glass fibers and at the interface of the glass fibers and demolding cloth through a vacuum infusion molding process when the vacuum degree is 40mbar, and curing the epoxy resin to obtain a first fiber reinforced material layer 6 with the thickness of 100 microns;
(3) and after the epoxy resin is cured, physically separating the paint coating 1 from the substrate base material layer 2 to obtain a protective structure, wherein the shape of the protective structure is the same as that of the wind power blade, and the structure is shown in fig. 3.
The manufacturing process for applying the protective structure to the wind power blade comprises the following steps:
(1) coating a release agent in a wind power blade mould, and curing the release agent at 20 ℃ to form a release agent layer;
(2) as shown in fig. 4, the protective structure is placed in the wind turbine blade mold and on the release agent layer;
(3) sequentially paving a third fiber material, paving a core material, paving a vacuum material, vacuum-pouring a second resin material and pre-curing the second resin material in the protective structure, and respectively preparing an upper skin matrix and a lower skin matrix of the wind power blade by the method;
(4) sequentially carrying out bonding, mold closing and post-curing on the wind power blade upper skin matrix with the protective structure and the wind power blade lower skin matrix, and demolding after the second resin material and the bonding material are completely cured to obtain the wind power blade skin matrix with the protective structure;
(5) after the wind power blade skin substrate with the protection structure is obtained, reinforcing, polishing, large putty shaping, polishing, pinhole putty pinhole repairing, polishing and priming paint coating are carried out on the region of the front edge and the region of the rear edge of the wind power blade without the paint coating 1, and front edge protection paint is coated or front edge protection films are pasted on the front edge of the blade.
The surface of the protective structure is provided with the paint coating 1 with uniform thickness, and the wind power blade skin matrix with the protective structure cannot have stripping hidden trouble in practical application and has a good protective effect.
Example 4
The embodiment provides a preparation method of a protective structure, and the wind power blade surface paint prefabricated structure provided by the embodiment 1 is used, and the preparation method comprises the following steps:
(1) tearing off release paper 4 of the wind power blade surface paint prefabricated structure, pasting a plurality of wind power blade surface paint prefabricated structures on the inner surface of a protective structure mould through a back glue layer 3 (5 protective structure moulds form a protective structure mould assembly, the inner surface of the protective structure mould assembly is the same as the inner surface shape of the wind power blade mould), wherein the wind power blade surface paint prefabricated structures are not pasted at 50mm from the edges of the front edge 83 of the protective structure mould assembly and the rear edge 84 of the protective structure mould assembly, the adjacent wind power blade surface paint prefabricated structures are lapped, the lapping width is 20mm, namely, a substrate base layer 2 of two wind power blade surface paint prefabricated structures at the lapped part is peeled off from a paint coating 1, and the peeled substrate base layer 2 is cut, so that the substrate base layers 2 of the two wind power blade surface paint prefabricated structures are butted, then placing a second fiber material layer 9 between the two paint coatings 1, the second fiber material is carbon fiber, the fiber form is fiber woven cloth, and the thickness is 1 mm;
(2) laying carbon fibers and demolding cloth on the paint coating 1, wherein the fibers are in the form of fiber woven cloth, depositing polyurethane resin in the carbon fibers and at the interface of the carbon fibers and the demolding cloth by a vacuum bag hand pressing and pasting method when the vacuum degree is 25mbar, and curing the polyurethane resin to obtain a first fiber reinforced material layer 6 with the thickness of 1mm, and meanwhile, obtaining a second fiber reinforced material layer between two paint coatings 1 at the lap joint of the wind power blade surface paint prefabricated structure;
(3) and after the polyurethane resin is cured, physically separating the paint coating 1 from the substrate base material layer 2 and tearing off the demolding cloth on the inner surface to obtain a protection structure, wherein 5 protection structures form a protection structure assembly with the same surface shape as the wind power blade.
The manufacturing process for applying the protective structure to the wind power blade comprises the following steps:
(1) coating a release agent in a wind power blade mould, and curing the release agent at 60 ℃ to form a release agent layer;
(2) placing 5 protective structures in a wind power blade mould and on a release agent layer to assemble a protective structure assembly, wherein adjacent protective structures are in butt joint;
(3) sequentially paving a third fiber material, paving a core material, paving a vacuum material, vacuum-pouring a second resin material and pre-curing the second resin material in the protective structure, and respectively preparing an upper skin matrix and a lower skin matrix of the wind power blade by the method;
(4) sequentially carrying out bonding, mold closing and post-curing on the wind power blade upper skin matrix with the protective structure and the wind power blade lower skin matrix, demolding after the second resin material and the bonding material are completely cured, coating paint at a butt joint for repairing, and thus obtaining the wind power blade skin matrix with the protective structure, wherein the structure is shown in fig. 6;
(5) after the wind power blade skin matrix with the protection structure is obtained, reinforcing, polishing, large putty shaping, polishing, pinhole putty pinhole repairing, polishing, priming paint coating are carried out on the area of the front edge and the rear edge of the wind power blade without the paint coating 1, and protective paint is coated or protective films are pasted on the front edge of the blade.
The surface of the protective structure is provided with the paint coating 1 with uniform thickness, and the wind power blade skin matrix with the protective structure cannot have stripping hidden trouble in practical application and has a good protective effect.
Example 5
The embodiment provides a preparation method of a protective structure, and the wind power blade surface paint prefabricated structure provided by the embodiment 1 is used, and the preparation method comprises the following steps:
(1) tearing off release paper 4 of the wind power blade surface paint prefabricated structure, pasting a plurality of wind power blade surface paint prefabricated structures on the inner surface of a protective structure mould through a back adhesive layer 3 (2 protective structure moulds form a protective structure mould assembly, the inner surface of the protective structure mould assembly is the same as the inner surface of the wind power blade mould), wherein the wind power blade surface paint prefabricated structures are not pasted at 50-250mm from the edges of the front edge 83 of the protective structure mould assembly and the rear edge 84 of the protective structure mould assembly, the adjacent wind power blade surface paint prefabricated structures are lapped, the lapping width is 50mm, namely, a substrate base layer 2 of two wind power blade surface paint prefabricated structures at the lapped part is peeled off from a paint coating 1, and the peeled substrate base layer 2 is cut, so that the substrate base layers 2 of the two wind power blade surface paint prefabricated structures are butted, then placing a second fiber material layer 9 between the two paint coatings 1, the second fiber material is aramid fiber, the fiber form is fiber paper, and the thickness is 300 mu m;
(2) laying aramid fiber and demolding cloth on the paint coating 1, wherein the fiber is fiber paper, depositing vinyl resin in the aramid fiber and at the interface of the aramid fiber and the demolding cloth through a vacuum infusion molding process when the vacuum degree is 15mbar, and curing the vinyl resin to obtain a first fiber reinforced material layer 6 with the thickness of 300 mu m, and meanwhile, obtaining a second fiber reinforced material layer between two paint coatings 1 at the lap joint of the wind power blade surface paint prefabricated structure;
(3) and after the vinyl resin is cured, physically separating the paint coating 1 from the substrate base material layer 2 and tearing off the demolding cloth on the inner surface to obtain a protective structure, wherein 2 protective structures form a protective structure assembly with the same surface shape as the wind power blade.
The manufacturing process for applying the protective structure to the wind power blade comprises the following steps:
(1) coating a release agent in a wind power blade mould, and curing the release agent at 38 ℃ to form a release agent layer;
(2) placing two protective structures in a wind power blade mould and on a release agent layer, and reserving a gap with the length of 1.5cm between the adjacent protective structures;
(3) sequentially paving a third fiber material, paving a core material, paving a vacuum material, vacuum-pouring a second resin material and pre-curing the second resin material in the protective structure, and respectively preparing an upper skin matrix and a lower skin matrix of the wind power blade by the method;
(4) sequentially carrying out bonding, mold closing and post-curing on the wind power blade upper skin matrix with the protective structure and the wind power blade lower skin matrix, demolding after the second resin material and the bonding material are completely cured, coating paint at the reserved gap for repairing, and thus obtaining the wind power blade skin matrix with the protective structure, wherein the structure of the wind power blade skin matrix is shown in fig. 7;
(5) after the wind power blade skin substrate with the protection structure is obtained, reinforcing, polishing, large putty shaping, polishing, pinhole putty pinhole repairing, polishing and priming paint coating are carried out on the region of the front edge and the region of the rear edge of the wind power blade without the paint coating 1, and front edge protection paint is coated or front edge protection films are pasted on the front edge of the blade.
The surface of the protective structure is provided with the paint coating 1 with uniform thickness, and the wind power blade skin matrix with the protective structure cannot have stripping hidden trouble in practical application and has a good protective effect.
Example 6
The embodiment provides a preparation method of a protective structure, and the wind power blade surface paint prefabricated structure provided by the embodiment 1 is used, and the preparation method comprises the following steps:
(1) tearing off release paper 4 of the wind power blade surface paint prefabricated structure, pasting a plurality of wind power blade surface paint prefabricated structures on the inner surface of a protective structure die through a back adhesive layer 3 (3 protective structure dies form a protective structure die assembly, the inner surface of the protective structure die assembly is the same as the inner surface of the wind power blade die), wherein the wind power blade surface paint prefabricated structures are not pasted at 50-250mm from the edges of the front edge 83 of the protective structure die assembly and the rear edge 84 of the protective structure die assembly, the adjacent wind power blade surface paint prefabricated structures are lapped, the lapping width is 30mm, namely, a substrate base layer 2 of two wind power blade surface paint prefabricated structures at the lapped part is peeled off from a paint coating 1, and the peeled substrate base layer 2 is cut, so that the substrate base layers 2 of the two wind power blade surface paint prefabricated structures are butted, then placing a second fiber material layer 9 between the two paint coatings 1, the second fiber material is glass fiber, the fiber form is fiber woven cloth, and the thickness is 150 mu m;
(3) laying glass fiber and demolding cloth on the paint coating 1, wherein the fiber is fiber woven cloth, coating unsaturated polyester resin in the glass fiber and at the interface of the glass fiber and the demolding cloth through a vacuum infusion molding process when the vacuum degree is 25mbar, and curing the unsaturated polyester resin to obtain a first fiber reinforced material layer 6 with the thickness of 150 mu m, and meanwhile, obtaining a second fiber reinforced material layer between two paint coatings 1 at the lap joint of the paint prefabricated structure on the surface of the wind power blade;
(4) and after the unsaturated polyester resin is cured, physically separating the paint coating 1 from the substrate base material layer 2 and tearing off the demolding cloth on the inner surface to obtain a protective structure, wherein 3 protective structures form a protective structure assembly with the same surface shape as the wind power blade.
The manufacturing process for applying the protective structure to the wind power blade comprises the following steps:
(1) coating a release agent in a wind power blade mould, and curing the release agent at 45 ℃ to form a release agent layer;
(2) placing 3 protective structures in the wind power blade mould and on the release agent layer, and reserving a gap with the length of 2cm between every two adjacent protective structures;
(3) sequentially paving a third fiber material, paving a core material, paving a vacuum material, vacuum-pouring a second resin material and pre-curing the second resin material in the protective structure, and respectively preparing an upper skin matrix and a lower skin matrix of the wind power blade by the method;
(4) sequentially carrying out bonding, mold closing and post-curing on the wind power blade upper skin matrix with the protective structure and the wind power blade lower skin matrix, demolding after the second resin material and the bonding material are completely cured, coating paint at the reserved gap for repairing, and thus obtaining the wind power blade skin matrix with the protective structure, wherein the structure of the wind power blade skin matrix is shown in fig. 7;
(5) after the wind power blade skin substrate with the protection structure is obtained, reinforcing, polishing, large putty shaping, polishing, pinhole putty pinhole repairing, polishing and priming paint coating are carried out on the region of the front edge and the region of the rear edge of the wind power blade without the paint coating 1, and front edge protection paint is coated or front edge protection films are pasted on the front edge of the blade.
The surface of the protective structure is provided with the paint coating 1 with uniform thickness, and the wind power blade skin matrix with the protective structure cannot have stripping hidden trouble in practical application and has a good protective effect.
Example 7
The embodiment provides a preparation method of a protective structure, and the wind power blade surface paint prefabricated structure provided by the embodiment 1 is used, and the preparation method comprises the following steps:
(1) tearing off release paper 4 of the wind power blade surface paint prefabricated structure, and pasting a plurality of wind power blade surface paint prefabricated structures on the inner surface of a protective structure mold through a back glue layer 3, wherein the wind power blade surface paint prefabricated structures are not pasted at the edge of 250mm away from the front edge 81 of the protective structure mold and the rear edge 82 of the protective structure mold, the adjacent wind power blade surface paint prefabricated structures are butted, and the shape of the inner surface of the protective structure mold is the same as that of the local inner surface of the wind power blade mold;
(2) laying glass fibers on the paint coating 1, wherein the glass fibers are chopped strand mats, depositing epoxy resin in the glass fibers and at the interface of the glass fibers and demolding cloth through a vacuum infusion molding process when the vacuum degree is 40mbar, and curing the epoxy resin to obtain a first fiber reinforced material layer 6 with the thickness of 100 microns;
(3) and after the epoxy resin is cured, physically separating the paint coating 1 from the substrate base material layer 2 to obtain a protective structure, wherein the shape of the protective structure is the same as the local shape of the wind power blade.
The manufacturing process for applying the protective structure to the wind power blade comprises the following steps:
(1) coating a release agent in a wind power blade mould, and curing the release agent at 20 ℃ to form a release agent layer;
(2) as shown in fig. 4, the protective structure is placed in the wind turbine blade mold and on the release agent layer;
(3) sequentially paving a third fiber material, paving a core material, paving a vacuum material, vacuum-pouring a second resin material and pre-curing the second resin material in the protective structure, and respectively preparing an upper skin matrix and a lower skin matrix of the wind power blade by the method;
(4) sequentially carrying out bonding, mold closing and post-curing on the wind power blade upper skin matrix with the protective structure and the wind power blade lower skin matrix, and demolding after the second resin material and the bonding material are completely cured to obtain the wind power blade skin matrix partially covered with the protective structure;
(5) reinforcing, polishing, large putty repairing, polishing, pinhole putty repairing, polishing and priming paint coating are carried out on the areas without the paint coating 1 on the front edge and the rear edge of the wind power blade, and front edge protective paint is coated or front edge protective films are pasted on the front edge of the blade; the areas not covered by the protective structure can be protected by other existing protection technologies.
The surface of the protective structure is provided with the paint coating 1 with uniform thickness, the wind power blade is good in protective effect in practical application, and the region covered with the protective structure is free of stripping hidden troubles.
Example 8
The embodiment provides a preparation method of a protective structure, and the wind power blade surface paint prefabricated structure provided by the embodiment 1 is used, and the preparation method comprises the following steps:
(1) tearing off release paper 4 of the wind power blade surface paint prefabricated structure, pasting a plurality of wind power blade surface paint prefabricated structures on the inner surface of a protective structure mould through a back glue layer 3 (5 protective structure moulds form a protective structure mould assembly, the inner surface of the protective structure mould assembly is the same as the local inner surface shape of the wind power blade mould), wherein the wind power blade surface paint prefabricated structures are not pasted 50mm away from the edges of the front edge 83 of the protective structure mould assembly and the rear edge 84 of the protective structure mould assembly, the adjacent wind power blade surface paint prefabricated structures are lapped, the lapping width is 20mm, namely, a substrate base layer 2 of the two wind power blade surface paint prefabricated structures at the lapped part is peeled off from a paint coating 1, and the peeled substrate base layer 2 is cut, so that the substrate base layers 2 of the two wind power blade surface paint prefabricated structures are butted, then placing a second fiber material layer 9 between the two paint coatings 1, the second fiber material is carbon fiber, the fiber form is fiber woven cloth, and the thickness is 1 mm;
(2) laying carbon fibers and demolding cloth on the paint coating 1, wherein the fibers are in the form of fiber woven cloth, depositing polyurethane resin in the carbon fibers and at the interface of the carbon fibers and the demolding cloth by a vacuum bag hand pressing and pasting method when the vacuum degree is 25mbar, and curing the polyurethane resin to obtain a first fiber reinforced material layer 6 with the thickness of 1mm, and meanwhile, obtaining a second fiber reinforced material layer between two paint coatings 1 at the lap joint of the wind power blade surface paint prefabricated structure;
(3) and after the polyurethane resin is cured, physically separating the paint coating 1 from the substrate base material layer 2 and tearing off the demolding cloth on the inner surface to obtain a protection structure, wherein 5 protection structures form a protection structure assembly with the same local surface shape as the wind power blade.
The manufacturing process for applying the protective structure to the wind power blade comprises the following steps:
(1) coating a release agent in a wind power blade mould, and curing the release agent at 60 ℃ to form a release agent layer;
(2) placing 5 protective structures in a wind power blade mould and on a release agent layer to assemble a protective structure assembly, wherein adjacent protective structures are in butt joint;
(3) sequentially paving a third fiber material, paving a core material, paving a vacuum material, vacuum-pouring a second resin material and pre-curing the second resin material in the protective structure, and respectively preparing an upper skin matrix and a lower skin matrix of the wind power blade by the method;
(4) sequentially carrying out bonding, mold closing and post-curing on the wind power blade upper skin matrix with the protective structure and the wind power blade lower skin matrix, demolding after the second resin material and the bonding material are completely cured, and coating paint at the butt joint for repairing to obtain the wind power blade skin matrix partially covered with the protective structure;
(5) reinforcing, polishing, large putty repairing, polishing, pinhole putty repairing, polishing and priming paint coating are carried out on the areas without the paint coating 1 on the front edge and the rear edge of the wind power blade, and protective paint is coated or protective films are pasted on the front edge of the blade; the areas not covered by the protective structural component may be protected using other existing protection techniques.
The surface of the protective structure is provided with the paint coating 1 with uniform thickness, the wind power blade is good in protective effect in practical application, the region covered with the protective structure is free of stripping hidden danger, and the protective structure has a good protective effect.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.
Claims (9)
1. The utility model provides a wind-powered electricity generation blade finish prefabricated construction, its characterized in that, includes prefabricated construction base member and paint coating, prefabricated construction base member is including substrate layer, the gum layer that range upon range of setting and from type paper, wherein, the surface that the substrate layer deviates from the gum layer is a smooth plane, paint coating set up in on the smooth plane, the substrate layer is provided with a plurality of protruding portions towards the surface of gum layer.
2. The wind blade surface paint preform structure as claimed in claim 1, wherein the height of the protrusion is 2-30 microns; the distance between the adjacent protruding parts is 2-500 micrometers.
3. The wind turbine blade surface paint preform structure as claimed in claim 1 or 2, wherein the protrusions are discrete point-like protrusions or stripe-like protrusions.
4. Wind turbine blade surface paint preform according to claim 1 or 2,
the thickness of the paint coating is 100-500 microns;
the thickness of the substrate base material layer is 10-100 microns;
the thickness of the back glue layer is 2-30 microns.
5. Wind turbine blade surface paint preform according to claim 1 or 2,
the paint coating is a polyurethane layer, a polyaspartic acid ester resin layer, an acrylic resin layer or a fluoropolymer layer;
the back adhesive layer is a rubber type pressure-sensitive adhesive layer, an organic silicon type pressure-sensitive adhesive layer or an acrylic acid type pressure-sensitive adhesive layer;
the substrate base material layer is a plastic film, and the material of the plastic film is one of polyethylene glycol terephthalate, hard polyvinyl chloride, polyethylene, high-density polyethylene and polypropylene.
6. The wind turbine blade surface paint preform structure as claimed in claim 3, wherein the width of the dot-shaped protrusions is 2-100 μm.
7. The wind power blade surface paint prefabricated structure according to claim 3, wherein the shape of the point-like protrusions is a triangular cone, a rectangular parallelepiped or a frustum of a prism.
8. The wind turbine blade surface paint preform structure as claimed in claim 3, wherein the width of the cross section of the strip-shaped protrusions is 2-100 μm in a direction perpendicular to the axial direction of the strip-shaped protrusions.
9. The wind turbine blade surface paint prefabricated structure according to claim 3, wherein the cross section of the strip-shaped protrusion is triangular, rectangular or trapezoidal in a direction perpendicular to the axial direction of the strip-shaped protrusion.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020181627.2U CN211474325U (en) | 2020-02-18 | 2020-02-18 | Wind-powered electricity generation blade finish prefabricated construction |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020181627.2U CN211474325U (en) | 2020-02-18 | 2020-02-18 | Wind-powered electricity generation blade finish prefabricated construction |
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| CN211474325U true CN211474325U (en) | 2020-09-11 |
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| CN202020181627.2U Active CN211474325U (en) | 2020-02-18 | 2020-02-18 | Wind-powered electricity generation blade finish prefabricated construction |
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| CN (1) | CN211474325U (en) |
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Effective date of registration: 20211028 Address after: 137000 Baicheng Industrial Park, Baicheng City, Jilin Province Patentee after: SINOMA WIND POWER BLADE CO.,LTD. Address before: 9 / F, block C, block 6, block B, Dongsheng Science Park, 66 xixiaokou Road, Haidian District, Beijing 100192 Patentee before: SINOMATECH WIND POWER BLADE Co.,Ltd. |
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