CN113352669A - Wind power blade and machining method - Google Patents

Wind power blade and machining method Download PDF

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Publication number
CN113352669A
CN113352669A CN202110725768.5A CN202110725768A CN113352669A CN 113352669 A CN113352669 A CN 113352669A CN 202110725768 A CN202110725768 A CN 202110725768A CN 113352669 A CN113352669 A CN 113352669A
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CN
China
Prior art keywords
shell
noise reduction
wind power
resin
reduction element
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202110725768.5A
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Chinese (zh)
Inventor
乔光辉
刘卫生
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Lianyungang Zhongfu Lianzhong Composites Group Co Ltd
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Lianyungang Zhongfu Lianzhong Composites Group Co Ltd
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Publication date
Application filed by Lianyungang Zhongfu Lianzhong Composites Group Co Ltd filed Critical Lianyungang Zhongfu Lianzhong Composites Group Co Ltd
Priority to CN202110725768.5A priority Critical patent/CN113352669A/en
Publication of CN113352669A publication Critical patent/CN113352669A/en
Pending legal-status Critical Current

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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28—Shaping operations therefor
    • B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
    • B29C70/36—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and impregnating by casting, e.g. vacuum casting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/68—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks
    • B29C70/72—Encapsulating inserts having non-encapsulated projections, e.g. extremities or terminal portions of electrical components
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/88—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts characterised primarily by possessing specific properties, e.g. electrically conductive or locally reinforced
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/08—Blades for rotors, stators, fans, turbines or the like, e.g. screw propellers
    • B29L2031/082—Blades, e.g. for helicopters
    • B29L2031/085—Wind turbine blades

Abstract

The invention provides a wind power blade and a processing method thereof, wherein the wind power blade comprises a first shell, a second shell and a noise reduction element, wherein two ends of the second shell are respectively connected with two ends of the first shell; the first shell comprises a first inner skin, a first outer skin, a first core material, a first main beam and a first auxiliary beam; one end of the noise reduction element along the width direction of the first shell is embedded in the first shell. When the wind power blade is processed, the first inner skin, the first core material, the first main beam, the first auxiliary beam, the first outer skin and the prefabricated noise reduction element are placed into a mold together, then a flow guide and vacuum system is established for pouring and pre-curing, so that the noise reduction element is bonded with the first shell together, and the noise reduction element is not easy to fall off and lose efficacy. Because other bonding materials are not used, the aerodynamic appearance of the wind power blade cannot be damaged, and the aerodynamic efficiency of the wind power blade is prevented from being influenced.

Description

Wind power blade and machining method
Technical Field
The invention relates to the field of wind power blade manufacturing, in particular to a wind power blade and a processing method thereof.
Background
In order to reduce the noise generated during the operation of the wind turbine blade, a noise reduction sawtooth tail edge plate is usually installed on the wind turbine blade. The existing noise reduction sawtooth tail edge plate is mostly made of plastic materials, and the noise reduction sawtooth tail edge plate and the wind power blade are fixedly bonded through bonding glue.
However, the noise reduction sawtooth tail edge plate has the problems of material aging, low mechanical property, easy fatigue failure, falling failure and the like. In addition, the bonding position of the noise reduction sawtooth tail edge plate and the rear edge of the wind power blade protrudes out of the surface of the blade, the pneumatic appearance of the wind power blade can be damaged, and the pneumatic efficiency of the wind power blade is influenced.
Disclosure of Invention
In order to solve the problems that in the prior art, a noise reduction sawtooth tail edge plate is easy to fall off and lose effectiveness, the aerodynamic appearance of a wind power blade is damaged, and the aerodynamic efficiency of the wind power blade is affected, the invention aims to provide the wind power blade.
The invention provides the following technical scheme:
a wind power blade comprises a first shell, a second shell and a noise reduction element, wherein the first shell and the second shell are arranged along the thickness direction of the wind power blade, and two ends of the first shell along the width direction of the wind power blade are respectively glued with two ends of the second shell;
the first shell comprises a first inner skin, a first outer skin, a first core material, a first main beam and a first auxiliary beam, wherein the first inner skin, the first core material, the first main beam, the first auxiliary beam and the first outer skin are arranged along the thickness direction of the first shell;
the second shell comprises a second inner skin, a second outer skin, a second core material, a second main beam and a second auxiliary beam, and the second inner skin, the second core material, the second main beam, the second auxiliary beam and the second outer skin are arranged along the thickness direction of the second shell;
the noise reduction element is embedded in the first shell along one end of the width direction of the first shell and is in contact with resin poured in the first shell so as to be bonded and fixed with the first shell in the resin curing process, and the noise reduction element is used for reducing noise generated when the wind power blade operates.
As a further optional scheme for the wind power blade, the noise reduction element is a noise reduction sawtooth tail edge plate, and sawteeth are arranged on one side, away from the first shell, of the noise reduction sawtooth tail edge plate.
As a further optional scheme for the wind turbine blade, the noise reduction element is made of glass fiber reinforced plastic.
As a further optional scheme for the wind power blade, the first shell is a pressure surface shell, and the second shell is a suction surface shell; or
The first shell is a suction surface shell, and the second shell is a pressure surface shell.
Another object of the invention is to provide a method of processing.
The invention provides the following technical scheme:
a processing method for manufacturing the wind power blade comprises the following steps:
prefabricating the noise reducing element;
manufacturing the first shell, enabling resin to be in contact with the noise reduction element, and curing and molding;
manufacturing the second shell; and
and clamping the first shell and the second shell.
As a further alternative to the processing method, the step of manufacturing the first housing, contacting the resin with the noise reduction element, and curing and molding includes:
laying down the first outer skin in a first mold;
placing the first core material, the first main beam and the first auxiliary beam on the first outer skin;
laying the first inner skin on the first core material, the first main beam and the first auxiliary beam;
mounting the noise reduction element within the first mold;
establishing a flow guide and vacuum system;
resin is poured;
the resin is pre-cured.
As a further alternative to the machining method, the step of manufacturing the second housing includes:
laying down the second outer skin in a second mould;
placing the second core material, the second main beam and the second auxiliary beam on the second outer skin;
laying down the second inner skin on the second core material, the second main beam and the second auxiliary beam;
establishing a flow guide and vacuum system;
resin is poured;
the resin is pre-cured.
As a further alternative to the processing method, the step of clamping the first housing and the second housing includes:
and respectively bonding the two ends of the first shell along the width direction of the wind power blade with the two ends of the second shell by using an adhesive.
As a further alternative to the machining method, the noise reduction element is cut and/or trimmed after the first housing and the second housing are clamped.
As a further alternative to the method of production, after the clamping of the first housing and the second housing, the noise reduction element, the first housing and the second housing are coated together with a coating.
The embodiment of the invention has the following beneficial effects:
when the wind power blade is processed, the first inner skin, the first core material, the first main beam, the first auxiliary beam, the first outer skin and the prefabricated noise reduction element are placed into a mold together, then a flow guide and vacuum system is established for pouring and pre-curing, so that the noise reduction element is bonded with the first shell together, and the noise reduction element is stably connected with the first shell. At this time, the noise reduction element is not easy to fall off and lose efficacy. Because other bonding materials are not used, the aerodynamic appearance of the wind power blade cannot be damaged, and the aerodynamic efficiency of the wind power blade is prevented from being influenced.
In order to make the aforementioned objects, features and advantages of the present invention more comprehensible and comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic overall structural diagram of a wind turbine blade according to embodiment 1 of the present invention;
FIG. 2 shows an enlarged schematic view at A in FIG. 1;
FIG. 3 is a schematic structural diagram illustrating a noise reduction element in a wind turbine blade according to embodiment 1 of the present invention;
FIG. 4 is a flow chart illustrating the steps of a method of manufacturing according to example 2 of the present invention;
fig. 5 is a schematic flow chart illustrating step S2 in the processing method according to embodiment 2 of the present invention;
fig. 6 is a schematic structural diagram illustrating a mold used in a processing method according to embodiment 2 of the present invention.
Description of the main element symbols:
100-a first housing; 110-a first filler; 120-a first inner skin; 130-a first outer skin; 200-a second housing; 210-a second filler; 220-a second inner skin; 230-a second outer skin; 300-a noise reducing element; 400-a first mold; 410-a leading edge portion; 420-a cavity portion; 430-trailing edge portion; 500-second mold.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly on" another element, there are no intervening elements present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the templates herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Example 1
Referring to fig. 1 to 3, the present embodiment provides a wind turbine blade, which belongs to one of the key components of a wind power generation device, and is used for absorbing and converting kinetic energy of airflow into kinetic energy of a hub and a rotating shaft in the wind power generation device. The wind power blade comprises a first shell 100, a second shell 200 and a noise reduction element 300, wherein the first shell 100 and the second shell 200 are arranged along the thickness direction of the wind power blade, and the noise reduction element 300 is located at one end of the first shell 100 along the width direction of the wind power blade.
Specifically, the first case 100 includes a first filler 110, a first inner skin 120, a first outer skin 130, a first core material, a first main beam, and a first sub beam. The first inner skin 120, the first core material, the first main beam, the first auxiliary beam, and the first outer skin 130 are arranged along the thickness direction of the first case 100, and the first inner skin 120 is located on a side of the first outer skin 130 facing the second case 200.
The first filler 110 is made of resin and is formed by injection molding. The resin in a molten state is injected between the first inner skin 120 and the first outer skin 130, and after the resin is cooled and solidified, the first filler 110 is manufactured. Since the resin completely fills the fine depressions on the surfaces of the first inner skin 120 and the first outer skin 130 before curing, and completely wraps the fine protrusions on the surfaces of the first inner skin 120 and the first outer skin 130, so that the first inner skin 120 and the first outer skin 130 are bonded to the first filler 110, both the first inner skin 120 and the first outer skin 130 can be stably coupled to the manufactured first filler 110.
Specifically, the noise reduction element 300 is a noise reduction serration trailing edge plate made of glass fiber reinforced plastic, and is disposed along the length direction of the first housing 100. The noise reduction element 300 is located at one end of the first filler 110 in the width direction of the first shell 100, and is in contact with the first inner skin 120 and the first outer skin 130. One end of the noise reduction element 300 along the width direction of the first shell 100 is bonded to the first filler 110, and the other end of the noise reduction element 300 along the width direction of the first shell 100 is arranged to be saw-toothed, so as to reduce noise generated during the operation of the wind turbine blade.
Similar to the first inner skin 120, the noise reduction element 300 is contacted with the molten resin when the first filler 110 is manufactured, and the resin completely fills the fine recesses on the surface of the noise reduction element 300 and completely wraps the fine protrusions on the surface of the noise reduction element 300. After the resin is cured, the noise reduction element 300 is bonded to the first filler 110, and is stably connected to the first filler 110.
Specifically, along the width direction of the wind power blade, two ends of the second shell are respectively bonded and fixed with two ends of the first shell through the mold closing glue.
The second case 200 includes a second filler 210, a second inner skin 220, a second outer skin 230, a second core material, a second girder, and a second girder. Wherein the second inner skin 220 is located on a side of the second outer skin 230 facing the first case 100, and the second inner skin 220, the second core material, the second main beam, the second auxiliary beam, and the second outer skin 230 are arranged in a thickness direction of the second case 200.
The second filler 210 is made of resin and is formed by injection molding. The second filler 210 may be manufactured by injecting a molten resin between the second inner skin 220 and the second outer skin 230 and cooling and solidifying the resin. Since the resin completely fills the fine depressions on the surfaces of the second inner skin 220 and the second outer skin 230 before curing, and completely wraps the fine protrusions on the surfaces of the second inner skin 220 and the second outer skin 230, so that the second inner skin 220 and the second outer skin 230 are bonded to the second filler 210, both the second inner skin 220 and the second outer skin 230 can be stably coupled to the manufactured second filler 210.
In this embodiment, the first shell 100 is a pressure surface shell of the wind turbine blade, and the second shell 200 is a suction surface shell of the wind turbine blade. In another embodiment of the present application, the first shell 100 may also be a suction surface shell of a wind turbine blade, and correspondingly, the second shell 200 is a pressure surface shell of a wind turbine blade.
When the wind turbine blade is manufactured, the first inner skin 120, the first outer skin 130 and the noise reduction element 300 which are prefabricated are placed into the first mold 400 for molding the first shell 100 together, then resin is poured to make the resin contact with the first inner skin 120, the first outer skin 130 and the noise reduction element 300 at the same time, and after the resin is cured to mold the first filler 110, the first inner skin 120, the first outer skin 130 and the noise reduction element 300 are all bonded to the first filler 110, so as to be stably connected with the first filler 110. At this time, the noise reduction element 300 is not easily detached and failed. Because other bonding materials are not used, the aerodynamic appearance of the wind power blade cannot be damaged, and the aerodynamic efficiency of the wind power blade is prevented from being influenced.
Example 2
Referring to fig. 4 to fig. 6, the present embodiment provides a processing method for manufacturing the wind turbine blade, including the following steps:
s1, prefabricating the noise reduction element 300.
The noise reduction element 300 is a noise reduction sawtooth tail edge plate made of glass fiber reinforced plastic, sawteeth are formed on one side of the noise reduction sawtooth tail edge plate in an integrated mode, and noise generated in the running process of the wind power blade is reduced.
S2, manufacturing the first housing 100, and contacting the noise reduction element 300 with resin and curing the resin, the specific steps are as follows:
s2-1, cleaning the first mold 400, smearing a release agent on the inner wall of the cavity of the first mold 400, and then laying release cloth.
S2-2, the first outer skin 130 is laid in the first mold 400.
S2-3, placing a first core material, a first main beam, and a first auxiliary beam on the first outer skin 130.
S2-4, laying the first inner skin 120 on the first core material, the first main beam, and the first auxiliary beam.
S2-5, the noise reduction element 300 is installed in the first mold 400.
And S2-6, establishing a diversion and vacuum system.
S2-7, pouring molten resin into the first mold 400, so that the resin is simultaneously in contact with the first outer skin 130, the first core material, the first main beam, the first auxiliary beam, the first inner skin 120 and the noise reduction element 300, and simultaneously blocking the resin from moving to the side of the noise reduction element 300 opposite to the first inner skin 120 by using the resin stopper.
S2-8, the resin is pre-cured to mold the first filler 110.
Further, in order to stabilize the noise reduction element 300 during the molding of the first filler 110, a fixing element is further provided on the first mold 400, and the noise reduction element 300 is fixed by the fixing element.
In this embodiment, the first mold 400 includes a front edge portion 410, a cavity portion 420, and a rear edge portion 430, and the front edge portion 410, the cavity portion 420, and the rear edge portion 430 are sequentially arranged in a width direction of the wind turbine blade.
The fixing element may be designed as a fixing tool, the fixing tool is connected to the first mold 400 by a screw, and the noise reduction element 300 is clamped and fixed by the fixing tool.
S3, manufacturing the second housing 200, specifically including the following steps:
s3-1, cleaning the second mold 500, smearing a release agent on the inner wall of the cavity of the second mold 500, and then laying release cloth.
S3-2, laying down the second outer skin 230 in the second mold 500.
S3-3, placing a second core material, a second main beam, and a second auxiliary beam on the second outer skin 230.
S3-4, laying a second inner skin 220 on the second core material, the second main beam, and the second sub beam.
And S3-5, establishing a diversion and vacuum system.
S3-6, pouring molten resin into the second mold 500, so that the resin is simultaneously in contact with the second outer skin 230, the second core material, the second main beam, the second auxiliary beam, and the second inner skin 220.
S3-7, the resin is pre-cured to form the second filler 210.
S4, closing the first casing 100 and the second casing 200, specifically including the steps of:
s4-1, grinding the root.
And S4-2, respectively sealing the first shell 100 and the second shell 200 with vacuum, and installing components such as a web and a lightning receptor.
And S4-3, coating adhesives at two ends of the first shell 100 and the second shell 200 in the width direction of the wind turbine blade, wherein the adhesives are die-clamping adhesives, then clamping the first shell 100 and the second shell 200, and removing the extruded redundant adhesives.
And S4-4, performing subsequent operations such as reinforcement and solidification to form the wind power blade.
And S5, releasing the wind power blade from the first mold 400 and the second mold 500.
S6, cutting and trimming the noise reduction element 300 according to the design size of the noise reduction element 300, so that the shape of the noise reduction element 300 meets the requirements.
S7, cleaning the surface of the whole wind power blade, checking whether the surface of the wind power blade is intact and clean, and confirming that the surface of the wind power blade has no obvious defects such as pits, needle holes, sand holes and the like and has no impurities such as dust and the like.
S8, coating the noise reduction element 300, the first shell 100 and the second shell 200 together, specifically including the following steps:
and S8-1, rolling and coating the front edge protective paint to ensure that the coating position is correct, uniformly coating the front edge protective paint without exposed bottom, and then checking the thickness of the front edge protective paint.
S8-2, repairing the putty, wherein the thickness of the putty is not more than 3 mm.
And S8-3, rolling and coating the primer to ensure that the coating is uniform and no exposed bottom exists, and then checking the thickness of the primer.
S8-4, repairing the surface of the whole wind power blade to ensure that the surface has no defects such as pinholes, sand holes and the like.
And S8-5, rolling and coating the finish paint to ensure that the finish paint is uniformly coated without exposed bottom, and then checking the thickness of the finish paint.
And S8-6, repairing the surface of the whole wind power blade again to ensure that the surface has no defects such as pinholes, impurities, paint tumors, uneven thickness, pits and the like.
And S8-7, rolling and coating the aviation warning paint to ensure that the painting position is correct and the painting is uniform without exposed bottom.
S8-8, curing all paint applied on the leaves.
And S8-9, rolling and coating the front edge protective paint again to ensure that the painting position is correct and the paint is uniform and has no exposed bottom.
And S8-10, repairing the surface of the whole wind power blade again to ensure that the surface is smooth and flat and has no defects of pinholes, pits, fish eyes, bubbles and the like.
And S8-11, finally, checking the surface of the whole wind power blade.
The front edge protective paint, the primer, the finish paint and the aviation warning paint are all water-based paints.
In the above processing, since the resin is directly molded on the surface of the noise reduction element 300, the cured first filler 110 and the noise reduction element 300 can be stably connected, and the noise reduction element 300 is not easily detached or failed. Because other bonding materials are not used, the aerodynamic appearance of the wind power blade cannot be damaged, and the aerodynamic efficiency of the wind power blade is prevented from being influenced.
In all examples shown and described herein, any particular value should be construed as merely exemplary, and not as a limitation, and thus other examples of example embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
The above examples are merely illustrative of several embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.

Claims (10)

1. The wind power blade is characterized by comprising a first shell, a second shell and a noise reduction element, wherein the first shell and the second shell are arranged along the thickness direction of the wind power blade, and two ends of the first shell along the width direction of the wind power blade are respectively glued with two ends of the second shell;
the first shell comprises a first inner skin, a first outer skin, a first core material, a first main beam and a first auxiliary beam, wherein the first inner skin, the first core material, the first main beam, the first auxiliary beam and the first outer skin are arranged along the thickness direction of the first shell;
the second shell comprises a second inner skin, a second outer skin, a second core material, a second main beam and a second auxiliary beam, and the second inner skin, the second core material, the second main beam, the second auxiliary beam and the second outer skin are arranged along the thickness direction of the second shell;
the noise reduction element is embedded in the first shell along one end of the width direction of the first shell and is in contact with resin poured in the first shell so as to be bonded and fixed with the first shell in the resin curing process, and the noise reduction element is used for reducing noise generated when the wind power blade operates.
2. The wind blade of claim 1 wherein the noise reducing element is a noise reducing serrated trailing edge plate, the noise reducing serrated trailing edge plate being serrated on a side remote from the first shell.
3. The wind blade as set forth in claim 1 wherein said noise reducing element is a fiberglass material.
4. The wind blade of claim 1 wherein the first shell is a pressure side shell and the second shell is a suction side shell; or
The first shell is a suction surface shell, and the second shell is a pressure surface shell.
5. A machining method for manufacturing a wind turbine blade according to any one of claims 1 to 4, comprising:
prefabricating the noise reducing element;
manufacturing the first shell, enabling resin to be in contact with the noise reduction element, and curing and molding;
manufacturing the second shell; and
and clamping the first shell and the second shell.
6. The process of claim 5, wherein the step of forming the first housing, contacting the noise reducing element with resin, and curing the resin comprises:
laying down the first outer skin in a first mold;
placing the first core material, the first main beam and the first auxiliary beam on the first outer skin;
laying the first inner skin on the first core material, the first main beam and the first auxiliary beam;
mounting the noise reduction element within the first mold;
establishing a flow guide and vacuum system;
resin is poured;
the resin is pre-cured.
7. The process of claim 5, wherein the step of fabricating the second shell comprises:
laying down the second outer skin in a second mould;
placing the second core material, the second main beam and the second auxiliary beam on the second outer skin;
laying down the second inner skin on the second core material, the second main beam and the second auxiliary beam;
establishing a flow guide and vacuum system;
resin is poured;
the resin is pre-cured.
8. The machining method according to claim 5, wherein the step of clamping the first housing and the second housing includes:
and respectively bonding the two ends of the first shell along the width direction of the wind power blade with the two ends of the second shell by using an adhesive.
9. The method of manufacturing of claim 5, wherein the noise reduction element is cut and/or trimmed after the first and second housings are clamped.
10. The process of claim 5, wherein the noise reduction element, the first shell, and the second shell are coated together after the first shell and the second shell are clamped.
CN202110725768.5A 2021-06-29 2021-06-29 Wind power blade and machining method Pending CN113352669A (en)

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CN202110725768.5A CN113352669A (en) 2021-06-29 2021-06-29 Wind power blade and machining method

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Application Number Priority Date Filing Date Title
CN202110725768.5A CN113352669A (en) 2021-06-29 2021-06-29 Wind power blade and machining method

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20240001636A1 (en) * 2020-12-22 2024-01-04 Lm Wind Power A/S A method of manufacturing a shell of a wind turbine blade

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