WO2023185540A1 - Élément de renforcement structural pour pale d'éolienne, et pale d'éolienne - Google Patents

Élément de renforcement structural pour pale d'éolienne, et pale d'éolienne Download PDF

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Publication number
WO2023185540A1
WO2023185540A1 PCT/CN2023/082675 CN2023082675W WO2023185540A1 WO 2023185540 A1 WO2023185540 A1 WO 2023185540A1 CN 2023082675 W CN2023082675 W CN 2023082675W WO 2023185540 A1 WO2023185540 A1 WO 2023185540A1
Authority
WO
WIPO (PCT)
Prior art keywords
wind turbine
structural reinforcement
blade
turbine blades
support part
Prior art date
Application number
PCT/CN2023/082675
Other languages
English (en)
Chinese (zh)
Inventor
张健侃
王运明
刘召军
李雪建
Original Assignee
振石集团华智研究院(浙江)有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 振石集团华智研究院(浙江)有限公司 filed Critical 振石集团华智研究院(浙江)有限公司
Publication of WO2023185540A1 publication Critical patent/WO2023185540A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D1/00—Wind motors with rotation axis substantially parallel to the air flow entering the rotor 
    • F03D1/06—Rotors
    • F03D1/065—Rotors characterised by their construction elements
    • F03D1/0675—Rotors characterised by their construction elements of the blades
    • 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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28—Shaping operations therefor
    • B29C70/40—Shaping or impregnating by compression not applied
    • B29C70/50—Shaping or impregnating by compression not applied for producing articles of indefinite length, e.g. prepregs, sheet moulding compounds [SMC] or cross moulding compounds [XMC]
    • B29C70/52—Pultrusion, i.e. forming and compressing by continuously pulling through a die
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/72—Wind turbines with rotation axis in wind direction
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

Definitions

  • Embodiments of the present disclosure relate to, but are not limited to, structural reinforcements for wind turbine blades and wind turbine blades.
  • wind power has attracted more and more attention as a green new energy.
  • wind turbines are rapidly developing towards lightweight and large-scale.
  • the wind turbine blades adopt an airfoil structure.
  • the two halves of the windward side blade and the leeward side blade of the wind turbine blade are usually manufactured in two separate molds by vacuum infusion molding, and then bonded together by bonding. , and at the same time, one or more structural reinforcements of different sizes are arranged in the blade to ensure the stability of the wind turbine blade.
  • the traditional C-shaped structure's structural reinforcements are limited by material properties and manufacturing difficulties and are difficult to meet the large-scale needs of wind turbine blades, while the T-shaped structure's structural reinforcements are composed of two separate structures, which are cumbersome to assemble and have shortcomings in stability.
  • the present disclosure provides a structural reinforcement for wind power blades and a wind power blade.
  • a structural reinforcement for wind turbine blades including a support part and two connection parts, the support part is configured to be connected to two of the connection parts respectively, and the two connection parts are The connecting parts are arranged oppositely, and the supporting part is arranged between the two connecting parts;
  • connection part includes a body and a plurality of uprights provided on the body, and the body is configured to be connected to the beam of the wind turbine blade;
  • a plurality of the upright columns extend into the support part, or the accommodation space formed between the plurality of upright columns accommodates the support part;
  • the projection of the upright column on the first cross section is in the shape of a triangle, and the base of the triangle is connected to the body.
  • the body is configured to be adhesively connected to the beam.
  • the body and the plurality of columns are an integrally formed structure.
  • the plurality of uprights extending into the support portion include:
  • the support part is provided with a plurality of slots, the slots are arranged in one-to-one correspondence with the uprights, the uprights are inserted into the slots, and the uprights are in contact with the side walls of the slots.
  • the accommodation space formed between the plurality of upright columns accommodates the support part, including:
  • the side walls of the upright column are in contact with the side walls of the support part.
  • the connecting portion is in a ⁇ shape.
  • the angle between the upright column and the body ranges from 60° to 90°.
  • the projection of the upright column on the first cross-section is an isosceles triangle.
  • a wind power blade is provided.
  • the wind power blade is provided with a structural reinforcement for the wind power blade as described in the first aspect.
  • the structural reinforcement for the wind power blade is provided.
  • the body is connected to the inner wall of the wind turbine blade.
  • the wind power blades include windward side blades and leeward side blades, the windward side blades and the leeward side blades are respectively provided with beams, and the two beams are arranged oppositely;
  • the body of the connecting portion of the structural reinforcement for wind turbine blades is configured to be adhesively connected to the beam through structural adhesive.
  • the technical solution provided by the embodiments of the present disclosure may include the following beneficial effects:
  • the structural reinforcement for wind turbine blades of the present disclosure includes a support part and two connection parts, and multiple columns of the two connection parts respectively extend into the upper and lower ends of the support part. , or the accommodation space formed by multiple columns accommodates the support portion to form a stable support structure.
  • the disclosed structural reinforcement for wind turbine blades has a stable structure, strong resistance to distortion, and obvious weight reduction effect.
  • the connecting portion thereof can be made into standard parts, has low production cost, is easy to install, and has good conformability.
  • Figure 1 is a schematic diagram of an exemplary illustrated wind turbine.
  • Figure 2 is a schematic diagram of a structural reinforcement for a wind turbine blade and a wind turbine blade according to an exemplary embodiment.
  • FIG. 3 is a schematic diagram of a connection part according to an exemplary embodiment.
  • Figure 4 is a schematic diagram of a structural reinforcement for a wind power blade and a wind power blade according to another exemplary embodiment.
  • FIG. 5 is a schematic diagram of a connection part according to another exemplary embodiment.
  • the terms "setting”, “installation” and “connection” should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. Connection; it can be a direct connection or an indirect connection through an intermediary. For those of ordinary skill in the art, the specific meanings of the above terms in this disclosure can be understood on a case-by-case basis.
  • wind turbine blades often use C-shaped or T-shaped structural reinforcements to increase their resistance to distortion.
  • the C-type structural reinforcements are made of laminate materials, which have low mechanical properties and limited improvement in anti-distortion performance;
  • the mold for the C-shaped structural reinforcement is expensive and difficult to manufacture, and the side wall of the C-shaped structural reinforcement is at right angles to the plane, making the fiberglass fabric difficult to fit and prone to wrinkles, thus forming a weak point in material mechanics;
  • the unit weight of the double T-shaped structural reinforcement is heavier than the C-shaped structural reinforcement, which increases the overall weight of the structural reinforcement, which is not conducive to the weight reduction of wind turbine blades. ;
  • a first aspect of the present disclosure provides a structural reinforcement for wind turbine blades.
  • the structural reinforcement for wind turbine blades includes a support part and two connection parts.
  • the support part is configured to be connected to the two connection parts respectively.
  • the two connection parts are arranged oppositely, and the support part is arranged between the two connection parts.
  • the connection part includes a body and a plurality of uprights provided on the body.
  • the body of the connection part is configured to be connected with the beam of the wind turbine blade.
  • the plurality of uprights of the connection part extend into the support part, or the accommodation formed between the plurality of uprights. The space accommodates the support part so that the support part is disposed between and connected to the two connection parts to form a stable support structure.
  • the projection of the column on the first section is in the shape of a triangle, and the base of the triangle is connected to the body.
  • the disclosed structural reinforcement for wind turbine blades has a stable structure, strong resistance to distortion, and obvious weight reduction effect.
  • the connecting portion thereof can be made into standard parts, has low production cost, is easy to install, and has good conformability.
  • a second aspect of the present disclosure provides a wind power blade.
  • the wind power blade is provided with a structural reinforcement for wind power blades as described in the first aspect.
  • the body of the wind power blade structural reinforcement is connected to the inner side wall of the wind power blade. Since the structural reinforcement for wind turbine blades described in the first aspect is provided inside the wind turbine blade in the present disclosure, the overall anti-torsion capability is enhanced, the structure is stable and the weight is light, which provides guarantee for the large-scale and large-scale production of wind turbine blades.
  • FIG. 1 shows the basic structure of a currently commonly used wind turbine, which includes a rotating hub 500 , a tower 600 and a plurality of wind turbine blades 300 .
  • the wind turbine blade 300 is an airfoil wind turbine blade and includes a windward blade 301 and a leeward blade 302 .
  • the size of the wind power blades 300 is getting larger and larger, which puts a greater test on the anti-torsion ability of the internal structural reinforcements.
  • a structural reinforcement for wind turbine blades includes a support part 100 and two connection parts 200 .
  • the support part 100 and the two connection parts 200 are connected up and down, and the two connection parts 200 are arranged oppositely, so that the support part 100 is connected and arranged between the two connection parts 200 .
  • the support part 100 is made of glass fiber fabric, foam core material and resin mixed material, and is formed by vacuum infusion.
  • the connecting part 200 includes a body 210 and a plurality of uprights 220 , and the plurality of uprights 220 are disposed on the body 210 .
  • a plurality of slots 110 are provided on the 100, and the slots 110 and the columns 220 are arranged in one-to-one correspondence.
  • the columns 220 are inserted into the slots 110, and the columns 220 are abutted and connected with the side walls of the slots 110, so that The upright column 220 extends into the support part 100 to form a fixed connection between the support part 100 and the two connecting parts 200 to form an integral structural reinforcement for wind turbine blades.
  • the cross-section perpendicular to the extension direction of the body 210 is taken as the first cross-section.
  • the projection of the upright column 220 on the first cross-section is in the shape of a triangle.
  • the base of the triangle is connected to the main body 210, and the vertical column 220 is on the first cross-section.
  • the projection is an isosceles triangle.
  • the wind turbine blades in the connected state use structural reinforcements, which are easy to plug in and out, have a stable connection, and have a simple structure, and can effectively provide stable support for the wind turbine blades 300 .
  • the structure in which the upper and lower connecting parts 200 of the structural reinforcement for wind power blades of the present disclosure are inserted into the support part 100 is easier to install and the weight reduction effect is obvious.
  • the connecting part 200 also includes a protrusion 240.
  • the protrusion 240 is provided at the bottom of the body 210. Due to the presence of the protrusion 240, there is a gap to fill the structural adhesive 400 when the bottom surface of the body 210 is bonded to the wind turbine blade.
  • the filling amount of the structural adhesive 400 is controlled by controlling the gaps between the plurality of protrusions 240 .
  • the structural adhesive has high bonding strength, can withstand large loads, is resistant to aging, fatigue, and corrosion, and has stable performance within the expected life. It is used to firmly adhere wind turbine blades and wind turbine blades in the present disclosure with structural reinforcements. catch.
  • the body 210, the plurality of columns 220 and the protrusions 240 are an integrally formed structure.
  • the integrally formed connecting part 200 is more convenient to process, has stronger rigidity, and is easier to make into a standard part.
  • the body 210 and the plurality of columns 220 may also be of a separate structure.
  • the materials of the body 210 and the plurality of columns 220 may be the same or different.
  • the connection part 200 of the separate structure has a higher flexibility.
  • connection part 200 includes two uprights 220 .
  • the double-column connecting part 200 is ⁇ -shaped as a whole.
  • the ⁇ -shaped connecting part 200 is easier to make into a standard part, is easy to assemble, has low mold manufacturing cost, and has good conformability.
  • the material of the connecting part 200 is a combination of glass fiber or carbon fiber and resin.
  • the connecting part 200 itself of this material has a certain degree of toughness, which facilitates the adjustment of the angle between the column 220 and the body 210 and makes the connection between the connecting part 200 and the supporting part 100 easier. stable.
  • the connection between the body 210 and the outer shell of the wind turbine blade 300 is also more fitting.
  • the angles between the two uprights 220 and the body 210 are a, b, c, and d respectively, and the angles a, b, c, and d range from 60° to 90°. Since the angle between the column 220 and the body 210 is adjustable within a certain range, the adaptability and conformability of the column 220 are improved.
  • an accommodating space 230 is formed between the plurality of uprights 220 of the connecting part 200 .
  • the accommodating space 230 accommodates the support part 100 , and the side walls of the uprights 220 are in contact with the support.
  • the side walls of the part 100 are in contact and connected, and the support part 100 and the two connecting parts 200 are fixedly connected to form an integral structural reinforcement for wind turbine blades.
  • the connecting part 200 includes two uprights 220.
  • the connecting part 200 in the form of double uprights is ⁇ -shaped as a whole, and the supporting part 100 is accommodated in the accommodation space 230 of the connecting part 200 with a ⁇ -shaped structure.
  • the connecting part 200 in the form of double columns is to form a receiving space 230 to accommodate the support part 100, as shown in FIG. 5, the intersection between the columns 220 and the body 210 is set to be an excessive arc, which can increase the capacity.
  • the accommodation effect of the accommodation space 230 makes the side walls of the column 220 and the side walls of the support part 100 fit more closely.
  • the included angles between the two upright columns 220 and the body 210 are a, b, c, and d respectively.
  • the included angles a, b, c, and d range from 60° to 90°.
  • the included angle can be within a certain range. adjust.
  • the bottom surface of the connecting side of the body 210 and the wind turbine blade 300 is set in an arc shape to have an included angle e, and the included angle e ranges from 120° to 170°.
  • the body 210 with a shaped bottom surface can increase the contact area between the connecting portion 200 and the wind turbine blade 300 to provide stronger support for the wind turbine blade 300 .
  • the bottom surface of the body 210 is set as an arc bottom surface or a horizontal bottom surface is set accordingly according to actual production requirements, and is not limited by this disclosure.
  • the bodies 210 of the two connecting parts 200 are respectively connected to the two beams 303 of the wind turbine blade 300 to provide support for the wind turbine blade 300 .
  • the beam risers 303 are respectively provided on the windward side blades 301 and the leeward side blades 302 of the wind turbine blade 300, and the beam risers 303 are usually combined with the wind turbine blade casing or formed into an integrated structure with the wind turbine blade casing.
  • the body 210 and the beam riser 303 are connected by conventional adhesive connection, and the body 210 and the beam riser 303 are firmly bonded through the structural adhesive 400 .
  • the length of the body 210 is set between 100mm and 1000mm
  • the gap between the two uprights 220 is set between 20mm and 200mm
  • the height of the uprights 220 is set between 50mm and 200mm. between.
  • the manufacturing process of the connecting part 200 is a pultrusion process and heating and solidification molding, including:
  • thermosetting resin or thermoplastic resin such as epoxy resin, polyurethane, vinyl resin or polyethylene terephthalate glycol
  • the heating is divided into three sections: front, middle and back.
  • the heating temperature gradually increases.
  • the length of the heating mold is 800 to 1000mm, and the heating temperature is 120 to 190°C.
  • Different three sections are set according to different resin types. Segmented heating is used for heating and curing.
  • the cured joint preform is pulled out from the mold through crawler traction and continuous pultrusion.
  • the length of the joint preform is limited by a fixed-length ejector, and then cut by a wire cutting process according to the size requirements. The required fixed length of the connecting portion 200 is obtained.
  • connection part 200 formed by heating and solidifying through the pultrusion process is different from the commonly used structural reinforcements currently on the market, and can be made into standard parts according to needs, with simple manufacturing and low mold cost.
  • FIG. 2 or Figure 4 Another aspect of the present disclosure, as shown in Figure 2 or Figure 4, is a wind power blade 300, including a windward blade 301 and a leeward blade 302.
  • the windward side blade 301 and the leeward side blade 302 are respectively provided with beam risers 303, and the two beam risers 303 are arranged oppositely.
  • a structural reinforcement for wind turbine blades as described in the first aspect is provided inside the wind turbine blade 300 .
  • the body 210 of the structural reinforcement for wind turbine blades is configured to be connected to the inner side wall of the wind turbine blade 300 .
  • the structural reinforcement for wind turbine blades The body 210 of the connecting part 200 is configured to be adhesively connected to the beam riser 303 through the structural adhesive 400 .
  • the wind turbine blade 300 includes multiple pairs of beams 303 .
  • the wind turbine blade 300 is also provided with a plurality of wind turbine blade structural reinforcements as described in the first aspect.
  • the number of structural reinforcements for wind turbine blades is related to factors such as the actual blade length of the wind turbine blade 300 and the torsional force that the wind turbine blade 300 needs to withstand.
  • the specific quantity setting is subject to actual production requirements and is not limited by this disclosure.
  • Structural reinforcements or T-shaped structural reinforcements have problems such as poor stability, difficulty in assembly, high cost, low structural stability, and difficulty in producing standard parts of structural reinforcements, which provide guarantee for the large-scale and large-scale production of wind turbine blades.
  • the structural reinforcement for wind turbine blades in the present disclosure has a stable structure, strong resistance to distortion, and obvious weight reduction effect.
  • the connecting portion thereof can be made into standard parts, has low production cost, is easy to install, and has good conformability.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Composite Materials (AREA)
  • Wind Motors (AREA)

Abstract

La présente invention concerne un élément de renforcement structural pour une pale d'éolienne, et une pale d'éolienne. L'élément de renforcement structural pour une pale d'éolienne comprend une partie de support et deux parties de liaison ; la partie de support est conçue pour être reliée aux deux parties de liaison qui sont agencées de manière opposée, et ladite partie de support est disposée entre les deux parties de liaison. Chaque partie de liaison comprend un corps et une pluralité de piliers de support disposés sur le corps, le corps étant conçu pour être relié à un capuchon de longeron d'une pale d'éolienne, et la pluralité des piliers de support s'étendant dans la partie de support, ou un espace de réception étant formé entre la pluralité des piliers de support pour recevoir la partie de support. En prenant une section perpendiculaire à la direction d'extension du corps en tant que première section, la saillie de chaque pilier de support sur la première section se présente sous la forme d'un triangle, le bord inférieur du triangle étant relié au corps.
PCT/CN2023/082675 2022-03-31 2023-03-21 Élément de renforcement structural pour pale d'éolienne, et pale d'éolienne WO2023185540A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202210331345.X 2022-03-31
CN202210331345.XA CN114962134A (zh) 2022-03-31 2022-03-31 一种风电叶片用结构增强件及风电叶片

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WO2023185540A1 true WO2023185540A1 (fr) 2023-10-05

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WO (1) WO2023185540A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114962134A (zh) * 2022-03-31 2022-08-30 振石集团华智研究院(浙江)有限公司 一种风电叶片用结构增强件及风电叶片

Citations (6)

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Publication number Priority date Publication date Assignee Title
US20170036406A1 (en) * 2014-04-02 2017-02-09 Lm Wp Patent Holding A/S A method and apparatus for manufacturing a part of a wind turbine blade
CN111775456A (zh) * 2020-07-07 2020-10-16 株洲时代新材料科技股份有限公司 一种凹形主梁风电叶片的制作方法及凹形主梁风电叶片
CN113787658A (zh) * 2021-09-10 2021-12-14 常州市宏发纵横新材料科技股份有限公司 模块化风电叶片及其制造方法
CN114211797A (zh) * 2021-11-24 2022-03-22 东方电气风电股份有限公司 风电叶片腹板快速粘接结构及其快速成型方法
CN114962134A (zh) * 2022-03-31 2022-08-30 振石集团华智研究院(浙江)有限公司 一种风电叶片用结构增强件及风电叶片
CN115807731A (zh) * 2022-11-28 2023-03-17 明阳智慧能源集团股份公司 一种风电叶片腹板及其成型方法

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170036406A1 (en) * 2014-04-02 2017-02-09 Lm Wp Patent Holding A/S A method and apparatus for manufacturing a part of a wind turbine blade
CN111775456A (zh) * 2020-07-07 2020-10-16 株洲时代新材料科技股份有限公司 一种凹形主梁风电叶片的制作方法及凹形主梁风电叶片
CN113787658A (zh) * 2021-09-10 2021-12-14 常州市宏发纵横新材料科技股份有限公司 模块化风电叶片及其制造方法
CN114211797A (zh) * 2021-11-24 2022-03-22 东方电气风电股份有限公司 风电叶片腹板快速粘接结构及其快速成型方法
CN114962134A (zh) * 2022-03-31 2022-08-30 振石集团华智研究院(浙江)有限公司 一种风电叶片用结构增强件及风电叶片
CN115807731A (zh) * 2022-11-28 2023-03-17 明阳智慧能源集团股份公司 一种风电叶片腹板及其成型方法

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