CN116061463A - Wind power blade front edge integrated prefabricated component and preparation method thereof - Google Patents

Wind power blade front edge integrated prefabricated component and preparation method thereof Download PDF

Info

Publication number
CN116061463A
CN116061463A CN202211633038.3A CN202211633038A CN116061463A CN 116061463 A CN116061463 A CN 116061463A CN 202211633038 A CN202211633038 A CN 202211633038A CN 116061463 A CN116061463 A CN 116061463A
Authority
CN
China
Prior art keywords
front edge
blade
main body
cloth
connecting plate
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
CN202211633038.3A
Other languages
Chinese (zh)
Inventor
徐宇
李召暄
曹艳彬
王学鑫
苏盟盟
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.)
Sino-Wind Energy Group Ltd
Original Assignee
Sino-Wind Energy Group Ltd
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 Sino-Wind Energy Group Ltd filed Critical Sino-Wind Energy Group Ltd
Priority to CN202211633038.3A priority Critical patent/CN116061463A/en
Publication of CN116061463A publication Critical patent/CN116061463A/en
Pending legal-status Critical Current

Links

Images

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
    • 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
    • B29C70/34—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 shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation
    • B29C70/342—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 shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation using isostatic pressure
    • 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
    • B29C70/34—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 shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation
    • B29C70/345—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 shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation using matched moulds
    • 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
    • F03D1/0608—Rotors characterised by their aerodynamic shape
    • F03D1/0633—Rotors characterised by their aerodynamic shape of the blades
    • 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

Landscapes

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

Abstract

The invention discloses a wind power blade front edge integrated prefabricated part and a preparation method thereof. The use of the integral prefabricated component of the front edge of the wind power blade reduces the frequency of glue spraying in the production process of the wind power blade, and ensures the stability of the structural performance of the front edge of the wind power blade; the integral prefabricated part of the front edge of the blade can also reduce step wrinkles at the splicing position of the front edge connecting plate die, and ensure the gap between the front edge connecting plate and the suction surface shell; in addition, in the production process of the wind power blade, the integral prefabricated part of the front edge of the blade can also reduce the number of layers of fiber cloth layers of workers, improve the efficiency of shell layer, and shorten the production period of the blade.

Description

Wind power blade front edge integrated prefabricated component and preparation method thereof
Technical Field
The invention belongs to the technical field of wind power blade manufacturing, relates to a wind power blade front edge integrated prefabricated component and a preparation method thereof, and particularly relates to a wind power blade front edge connecting plate with a flanging flange and a front edge UD (universal joint) piece integrated prefabricated component and a preparation method thereof.
Background
For large wind power blades, cracks and delamination defects at the front edge of the blade affect the safe operation of the blade, so that the production quality of the front edge of the blade is also important. The front edge part of the existing large wind power blade is usually provided with a front edge UD piece and a front edge connecting plate, and the longer the wind power blade is, the larger the thickness of the front edge UD piece and the front edge connecting plate is, and the more layers of glass fiber reinforced cloth are paved.
In the wind power blade production process, the front edge UD piece is generally formed by sequentially paving glass fiber reinforced cloth on the designed positioning according to staggered layers in the direction of spanwise chord, and the front edge UD piece is fixed in a mode of spraying glue or sewing a plurality of layers of fiber reinforced cloth together at present due to the large radian of the front edge area of the blade, so that the cloth layer is prevented from slipping down and falling under the action of gravity. While the leading edge webs are typically laminated with the blade pressure side shells, the leading edge regions of the blade suction side shells are bonded together by the leading edge webs and the leading edges of the pressure side shells. When the blade pressure surface shell is paved, glass fiber reinforced cloth of the connecting plate is paved on the pressure surface shell and a preparation mould of the front edge connecting plate in a staggered mode in the spanwise direction and the chordwise direction, the preparation mould of the front edge connecting plate is composed of a section of sectional mould, and then resin is poured into the front edge connecting plate and the pressure surface shell together to finish the integral curing and forming process of the front edge connecting plate and the pressure surface shell.
The structure of the front edge UD piece and the front edge connecting plate of the existing wind power blade and the processing preparation method thereof are low in efficiency and long in processing time, the laid fiber cloth layers are easy to slide down in the chord direction under the action of gravity, the chord direction laying positions of the fiber cloth layers are easy to deviate, gaps between the front edge connecting plate and the front edge area of the suction surface shell of the blade are easy to cause unsuitable gaps, step wrinkling defects are easy to occur in the front edge area of the produced and prepared blade, the production quality of the front edge area of the blade is unstable, and the maintenance risk and the maintenance cost of the blade are directly increased.
Disclosure of Invention
First technical problem
In order to overcome the defects and shortcomings in the prior art, the invention aims to provide an integrally prefabricated part of a wind power blade front edge and a preparation method thereof, and the integrally prefabricated part is provided with a flanging flange by integrally prefabricating and forming a pressure front edge UD part and a front edge connecting plate of an existing independently prepared blade, so that the pressure front edge UD is effectively ensured not to slide downwards due to the arrangement of the flanging flange on the integrally prefabricated part, the positioning appearance of the pressure front edge UD is ensured to be attached to a shell, the shape following degree of the front edge connecting plate is ensured, the clearance between the front edge connecting plate and the blade shell is ensured to be reasonable, the frequency of wrinkling and whitening defects in the front edge area of the blade is reduced, the working efficiency of layering is improved, the production period of the blade is shortened, and the maintenance risk and the maintenance cost of the blade are reduced.
(II) technical scheme
The invention aims to solve the technical problems, and adopts the following technical scheme:
the wind power blade front edge integrated prefabricated component comprises a pressure front edge UD main body section, a front edge connecting plate main body section and a flanging flange section, and is characterized in that the pressure front edge UD main body section, the front edge connecting plate main body section and the flanging flange section are integrated and prefabricated,
the pressure surface front edge UD main body section is integrally in a curved plate shape, the shape of the outer surface of the pressure surface front edge UD main body section is matched with the shape of the inner surface of the front edge part of the wind power blade pressure surface shell, and the front edge of the pressure surface front edge UD main body section is not beyond the front edge line of the blade shell in the chord width direction and is basically flush with the front edge line of the blade shell;
the front edge connecting plate main body section is in a curved plate shape, is basically symmetrical with respect to the front edge line of the blade shell in the chord width direction, comprises a pressure surface connecting plate part positioned at one side of the front edge line of the blade shell and a suction surface connecting plate part positioned at the other side of the front edge line of the blade shell in the chord width direction, and is arranged at the inner side of the pressure surface front edge UD main body section in the thickness direction, and the shape of the outer surface of the suction surface connecting plate part is matched with the shape of the inner surface of the front edge part of the suction surface shell of the wind power blade;
the turnup flange section is in a flat plate shape as a whole, is basically perpendicular to the front edge line of the blade shell in the chord direction width direction, and in the chord direction section, an included angle between the turnup flange section and the pressure surface front edge UD main body section is not smaller than 90 degrees.
Preferably, the pressure surface front edge UD main body section, the front edge connecting plate main body section and the flanging flange section are integrally formed and all comprise a plurality of layers of glass fiber reinforced cloth which are sequentially paved from outside to inside and are integrally solidified through resin, wherein,
an outermost glass fiber reinforced cloth formed as an outer surface layer of the pressure face front edge UD main body section and the burring flange section, a portion of which in the chord-wise width direction does not exceed the blade shell front edge line formed as an outer surface layer of the pressure face front edge UD main body section, and a portion of which in the chord-wise width direction exceeds the blade shell front edge line formed as an outer surface layer of the burring flange section;
in the glass fiber reinforced cloth layer of the pressure surface front edge UD main body section, the chord direction width of each cloth layer is the same, the cloth layers are stacked and staggered in the thickness direction, the cloth layers which are closer to the outer side are longer in the spreading direction length, and the cloth layers are closer to the front edge line of the blade shell in the chord direction width direction;
in the glass fiber reinforced cloth paving layers of the front edge connecting plate main body section, the chord direction width of each cloth layer is the same, the cloth layers are overlapped and staggered in the thickness direction, the spreading length of the cloth layers which are closer to the outer side is longer, the area covering the pressure surface front edge UD main body section in the chord direction width direction is wider, the area covering the pressure surface front edge UD main body section is formed into the paving layer of the pressure surface connecting plate part, and the rest areas are formed into the paving layer of the suction surface connecting plate part;
and one or more layers of strip-shaped glass fiber reinforced cloth are sequentially paved on the surface of the part, exceeding the front edge line of the blade shell body in the chord direction width direction, of the outermost glass fiber reinforced cloth along the span direction in the glass fiber reinforced cloth paving layer of the flanging flange section.
Preferably, the glass fiber reinforced cloth materials used for the pressure front edge UD main section and the front edge connecting plate main section are different, and the thickness and the span length of the pressure front edge UD main section and the front edge connecting plate main section are also different.
Preferably, the outer surface of the suction surface connecting plate part is in a curved arc shape, and in the structural dimension, a uniform gap is formed between the outer surface of the suction surface connecting plate part and the inner surface of the front edge part of the wind power blade suction surface shell, and the uniform gap is used for filling structural adhesive.
The second object of the present invention is to provide a method for manufacturing the wind power blade front edge integrated prefabricated component, which is characterized in that the method at least comprises the following steps:
SS1, preparation of a die:
the method comprises the steps that a prefabricated part die is fixedly arranged on a support in a hanging mode, the shape and the size of the inner cavity surface of the prefabricated part die are matched with those of the outer surfaces of suction surface connecting plate parts of pressure surface front edge UD main body sections and front edge connecting plate main body sections, a strip-shaped slit extending along the expanding direction is arranged on the inner cavity surface of the prefabricated part die, the chord direction position of the strip-shaped slit is consistent with the front edge line of a blade shell, two silica gel blocks which are positioned on the left side and the right side of the strip-shaped slit in the chord direction width direction and can be adjusted in a left-right moving mode are arranged below the prefabricated part die, gaps between the two silica gel blocks form a die cavity of a flanging flange section, and flanging flange sections with different thicknesses are formed by adjusting the gaps between the two silica gel blocks;
SS2. Preparation of layering:
firstly, cleaning the inner cavity surface of a prefabricated member die, and then paving release cloth on the inner cavity surface;
secondly, paving the outermost glass fiber reinforced cloth, wherein the main body part of the outermost glass fiber reinforced cloth is paved on the surface of the inner cavity of the prefabricated member die, the part of the main body part, which exceeds the front edge line of the blade shell in the chord direction width direction, extends out of the prefabricated member die through the strip-shaped slit, extends into a gap between two silica gel blocks, and one or more layers of strip-shaped glass fiber reinforced cloth are arranged on the glass fiber reinforced cloth extending into the gap along the expanding direction;
sequentially paving a plurality of laminated front edge UD glass fiber reinforced cloths on the outermost glass fiber reinforced cloth on the surface of the inner cavity of the prefabricated part die according to the chord direction and the spreading direction, wherein the spreading direction length of the cloth is longer as the cloth layer is closer to the outer side, and the cloth layer is closer to the front edge line of the blade shell in the chord direction width direction;
then, sequentially laying a plurality of layers of glass fiber reinforced cloth of the front edge connecting plate on the surface of the inner cavity of the prefabricated part die according to the chord direction and the spreading direction, wherein the spreading direction length of the cloth layer is longer as the cloth layer is closer to the outer side, the area covering the pressure front edge UD main body section in the chord direction width direction is wider, the area covering the pressure front edge UD main body section is formed into a layer of the pressure surface connecting plate part, and the rest areas are formed into a layer of the suction surface connecting plate part;
SS3, curing and forming:
paving auxiliary materials on the surface of the inner cavity of the prefabricated part die in sequence, wherein the auxiliary materials at least comprise demolding cloth, isolating films, dense mesh nets, air bridges and vacuum bags, then carrying out vacuum pouring resin for post curing, removing the auxiliary materials after the resin is completely cured, and carrying out edge polishing on the prefabricated part according to design and process requirements to obtain the blade front edge integrated prefabricated part with the flanging flange.
Preferably, the chord width of the inner cavity surface of the prefabricated part die is larger than the chord width of the pressure surface front edge UD main body section and the chord width of the front edge connecting plate main body section which are integrated, so that the purpose of facilitating the subsequent auxiliary material laying and the subsequent resin filling is achieved.
The third invention aims to provide a preparation method of a wind power blade pressure surface shell, which is characterized by at least comprising the following steps:
SS1. The above method according to the present invention prepares a front edge integrated preform in advance;
SS2. Layering and curing:
firstly, paving an outer skin, a blade root reinforcement prefabricated member and a blade root reinforcement layer under a bolt sleeve on a blade pressure surface shell mould;
then, the front-edge integrated prefabricated part is placed on the front edge position of the blade pressure surface shell mould in a hoisting mode, and the flange flanging section of the front-edge integrated prefabricated part is erected on the edge top surface of the blade pressure surface shell mould, so that the flange flanging section supports and fixes the whole front-edge integrated prefabricated part, and the front-edge integrated prefabricated part is prevented from sliding downwards due to the action of gravity;
then, continuing to lay glass fiber cloth on other areas, which are not covered by the front edge integrated prefabricated part, on the blade pressure surface shell mould, wherein the areas comprise main beams and tail edge UD parts; laying a front edge core material from the front edge of the main beam to a region with a certain distance from a front edge line above the front edge integrated prefabricated component on the blade pressure surface shell, and then laying subsequent materials including a tail edge core material, blade root enhancement on a bolt sleeve, an inner skin and the like;
finally, pouring resin and curing the resin;
and SS3, polishing and cutting off the flange flanging section of the front-edge integrated prefabricated part to form the blade pressure surface shell after the resin on the blade pressure surface shell mould is cured, so as to avoid affecting the die assembly of the follow-up blade pressure surface shell and the suction surface shell.
Preferably, in step SS2, a lap joint treatment is performed between the front edge core material and the front edge integrated prefabricated part above the front edge integrated prefabricated part on the blade pressure surface shell mold, and a chordwise chamfer of the front edge core material is matched with a staggered layer of the glass fiber cloth layer of the prefabricated part in the chordwise direction.
(III) technical effects
Compared with the prior art, the wind power blade front edge integrated prefabricated part has the remarkable technical effects that: the integral prefabricated part of the front edge of the blade is used for producing wind power blades, the flange flanging of the integral prefabricated part has a good fixing and supporting effect on the prefabricated part, the prefabricated part of the front edge of the blade can be effectively prevented from sliding downwards due to gravity, and then the glass fiber layering and other accessories on the periphery of the prefabricated part of the front edge are driven to be misplaced, so that the structural precision of blade production is ensured. The use of the integral prefabricated component of the front edge of the wind power blade reduces the frequency of glue spraying in the production process of the wind power blade, and ensures the stability of the structural performance of the front edge of the wind power blade; the integral prefabricated part of the front edge of the blade can also reduce step wrinkles at the splicing position of the front edge connecting plate die, and ensure the gap between the front edge connecting plate and the suction surface shell; in addition, in the production process of the wind power blade, the integral prefabricated part of the front edge of the blade can also reduce the number of layers of fiber cloth layers of workers, improve the efficiency of shell layer, and shorten the production period of the blade.
Drawings
FIG. 1 is a schematic view of a wind power blade leading edge integrated preform component using the present invention in the production of a blade pressure face shell.
FIG. 2 is a schematic structural view of an integrally prefabricated part of a wind power blade leading edge according to the present invention.
FIG. 3 is a schematic view of the preparation of an integral prefabricated part of a wind power blade leading edge according to the present invention.
Reference numerals illustrate:
the novel wind power blade comprises a 1-skin, a 2-blade root reinforcement prefabricated part, a 3-wind power blade front edge integrated prefabricated part, a 4-main beam, a 5-flanging flange section, a 6-front edge connecting plate main body section, a 7-pressure front edge UD main body section, an 8-prefabricated part die and a 9-silica gel block.
Detailed Description
For a better understanding of the present invention, its contents are further illustrated below in conjunction with examples so that the advantages and features of the present invention can be more readily understood by those skilled in the art. It should be noted that the following description is only a preferred embodiment of the present invention, but the present invention is not limited to the following embodiment. Indeed, it will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the scope or spirit of the invention. For example, features illustrated or described as part of one embodiment can be used with another embodiment to yield still a further embodiment. It is therefore intended that the present invention include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
As shown in fig. 2, the wind power blade front edge integrated prefabricated component of the invention comprises a pressure surface front edge UD main body section 7, a front edge connecting plate main body section 6 and a flanging flange section 5. The pressure surface front edge UD main body section 7, the front edge connecting plate main body section 6 and the flanging flange section 5 are integrally prefabricated and formed, wherein: the pressure surface front edge UD main body section 7 is in a curved plate shape as a whole, the shape of the outer surface of the pressure surface front edge UD main body section is matched with the shape of the inner surface of the front edge part of the wind power blade pressure surface shell, and the front edge of the pressure surface front edge UD main body section 7 does not exceed the front edge line of the blade shell in the chord width direction and is basically level with the front edge line of the blade shell; the front edge connecting plate main body section 6 is in a curved plate shape as a whole, is basically symmetrical with respect to the front edge line of the blade shell in the chord width direction, comprises a pressure surface connecting plate part positioned at one side of the front edge line of the blade shell and a suction surface connecting plate part positioned at the other side of the front edge line of the blade shell in the chord width direction, and is arranged at the inner side of the pressure surface front edge UD main body section 7 in the thickness direction, and the shape of the outer surface of the suction surface connecting plate part is matched with the shape of the inner surface of the front edge part of the wind power blade suction surface shell; the turnup flange section 5 is in a flat plate shape as a whole, is basically perpendicular to the front edge line of the blade shell in the chord-wise width direction, and in the chord-wise section, the included angle between the turnup flange section 5 and the pressure surface front edge UD main body section is not less than 90 degrees.
The pressure front edge UD main body section 7, the front edge connecting plate main body section 6 and the flanging flange section 5 are integrally formed and all comprise a plurality of layers of glass fiber reinforced cloth which are sequentially paved from outside to inside and are integrally solidified through resin, wherein the outermost glass fiber reinforced cloth is formed into the pressure front edge UD main body section and the outer surface layer of the flanging flange section, the part which does not exceed the front edge line of the blade shell in the chord direction width direction is formed into the outer surface layer of the pressure front edge UD main body section, and the part which exceeds the front edge line of the blade shell in the chord direction width direction is formed into the outer surface layer of the flanging flange section; in the glass fiber reinforced cloth layer of the pressure surface front edge UD main body section 7, the chord direction width of each cloth layer is the same, the cloth layers are stacked and staggered in the thickness direction, the cloth layers which are closer to the outer side are longer in the spreading direction length, and the cloth layers are closer to the front edge line of the blade shell in the chord direction width direction; in the glass fiber reinforced cloth layering of the front edge connecting plate main body section 6, the chord direction width of each cloth layer is the same, the cloth layers are stacked and staggered in the thickness direction, the spreading length of the cloth layers which are closer to the outer side is longer, the area covering the pressure surface front edge UD main body section 7 in the chord direction width direction is wider, the area covering the pressure surface front edge UD main body section 7 is formed into the layering of the pressure surface connecting plate part, and the rest areas are formed into the layering of the suction surface connecting plate part; in the glass fiber reinforced cloth layer of the turnup flange section 5, one or more layers of long strip-shaped glass fiber reinforced cloth are sequentially laid on the surface of the part of the outermost glass fiber reinforced cloth, which is beyond the front edge line of the blade shell in the chord direction width direction, along the span direction.
In the wind power blade front edge integrated prefabricated component, glass fiber reinforced cloth materials used for the pressure surface front edge UD main body section 7 and the front edge connecting plate main body section 6 are different, and the thickness and the spanwise length of the pressure surface front edge UD main body section 7 and the front edge connecting plate main body section 6 are also different. In the leading edge connection plate main body section 6, the outer surface of the suction surface connection plate part is in a curved arc shape, and in terms of structural dimension, a uniform gap is formed between the outer surface of the suction surface connection plate part and the inner surface of the leading edge part of the wind power blade suction surface shell, and the uniform gap is used for filling structural adhesive.
As shown in FIG. 3, the wind power blade front edge integrated prefabricated component mainly comprises the following steps when being processed and prepared:
SS1, preparation of a die: the prefabricated member die 8 is fixedly arranged on the support in a hanging mode, the shape and the size of the inner cavity surface of the prefabricated member die are matched with those of the outer surfaces of the suction surface connecting plate parts of the pressure surface front edge UD main body section 7 and the front edge connecting plate main body section 6, a strip-shaped slit extending along the expanding direction is arranged on the inner cavity surface of the prefabricated member die, the chord direction position of the strip-shaped slit is consistent with the front edge line of the blade shell, two silica gel blocks 9 which are positioned on the left side and the right side of the strip-shaped slit in the chord direction width direction and can be adjusted in a left-right moving mode are arranged below the prefabricated member die, a gap between the two silica gel blocks 9 is formed into a die cavity of the flanging flange section 5, and the flanging flange section 5 with different thicknesses is formed by adjusting the gap between the two silica gel blocks 9. In addition, the chord width of the inner cavity surface of the prefabricated part die 8 is larger than the chord width of the pressure surface front edge UD main body section 7 and the front edge connecting plate main body section 6 which are integrated, so that the purpose is to facilitate the subsequent auxiliary material laying and the subsequent resin filling.
SS2. Preparation of layering: firstly, cleaning the inner cavity surface of a prefabricated member mould 8, and then paving release cloth on the inner cavity surface; secondly, paving the outermost glass fiber reinforced cloth, wherein the main body part of the outermost glass fiber reinforced cloth is paved on the surface of the inner cavity of the prefabricated part mould 8, the part of the main body part, which exceeds the front edge line of the blade shell in the chord direction width direction, extends out of the prefabricated part mould through the opened strip-shaped slit, extends into a gap between two silica gel blocks 9, and one or more layers of strip-shaped glass fiber reinforced cloth are arranged on the glass fiber reinforced cloth extending into the gap along the expanding direction; sequentially paving a plurality of laminated front edge UD glass fiber reinforced cloth layers on the outermost glass fiber reinforced cloth on the inner cavity surface of the prefabricated part die 8 according to the chord direction and the spreading direction, wherein the spreading direction length of the cloth layers is longer as the cloth layers are closer to the outer side, and the cloth layers are closer to the front edge line of the blade shell in the chord direction width direction; then, sequentially laying a plurality of layers of glass fiber reinforced cloth of the front edge connecting plate on the surface of the inner cavity of the prefabricated part mould 8 according to the chord direction and the spreading direction, wherein the spreading direction length of the cloth layer is longer as the cloth layer is closer to the outer side, the area covering the pressure front edge UD main body section 7 in the chord direction width direction is wider, the area covering the pressure front edge UD main body section 7 is formed into a layer of the pressure surface connecting plate part, and the rest areas are formed into layers of the suction surface connecting plate part;
SS3, curing and forming: paving auxiliary materials on the inner cavity surface of the prefabricated part die 8 in sequence, wherein the auxiliary materials at least comprise demolding cloth, isolating films, dense mesh nets, air bridges and vacuum bags, then carrying out vacuum infusion resin post-curing, removing the auxiliary materials after the resin is completely cured, and carrying out edge polishing on the prefabricated part according to design and process requirements to obtain the blade front edge integrated prefabricated part with the flanging flange.
As shown in FIG. 1, when the wind power blade front edge integrated prefabricated component is used for processing and producing a wind power blade pressure surface shell, the wind power blade pressure surface shell mainly comprises the following steps:
SS1. The above-described method according to the present invention prepares a front-edge integrated preform 3 in advance;
SS2. Layering and curing: firstly, paving an outer skin 1, a blade root reinforcement prefabricated member 2 and a blade root reinforcement layer under a bolt sleeve on a blade pressure surface shell mould; then, the front-edge integrated prefabricated part 3 is placed on the front edge position of the blade pressure surface shell mould in a hoisting mode, and the flange flanging section 6 of the front-edge integrated prefabricated part is erected on the edge top surface of the blade pressure surface shell mould, so that the flange flanging section 6 supports and fixes the whole front-edge integrated prefabricated part 3, and the front-edge integrated prefabricated part 3 is prevented from sliding downwards due to the action of gravity; then, continuing to lay glass fiber cloth on other areas, which are not covered by the front-edge integrated prefabricated part 3, on the blade pressure surface shell mold, including laying a main beam 4 and a tail-edge UD piece, laying a front-edge core material on the front-edge integrated prefabricated part 3 of the blade pressure surface shell mold from the front edge of the main beam to an area with a certain distance from a front edge line, performing lap joint treatment between the front-edge core material and the front-edge integrated prefabricated part 3, and then laying follow-up materials including tail-edge core material, blade root reinforcement on a bolt sleeve, an inner skin and the like; finally, pouring resin and curing the resin;
and SS3, after the resin on the blade pressure surface shell mould is cured, polishing and cutting the flange flanging section 6 of the front-edge integrated prefabricated part 3 to form the blade pressure surface shell so as to avoid affecting the die assembly of the follow-up blade pressure surface shell and the suction surface shell.
The object of the present invention is fully effectively achieved by the above-described embodiments. All equivalent or simple changes of the structure, characteristics and principle according to the inventive concept are included in the protection scope of the present invention. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions in a similar manner without departing from the scope of the invention as defined in the accompanying claims.

Claims (8)

1. The wind power blade front edge integrated prefabricated component comprises a pressure front edge UD main body section, a front edge connecting plate main body section and a flanging flange section, and is characterized in that the pressure front edge UD main body section, the front edge connecting plate main body section and the flanging flange section are integrated and prefabricated,
the pressure surface front edge UD main body section is integrally in a curved plate shape, the shape of the outer surface of the pressure surface front edge UD main body section is matched with the shape of the inner surface of the front edge part of the wind power blade pressure surface shell, and the front edge of the pressure surface front edge UD main body section is not beyond the front edge line of the blade shell in the chord width direction and is basically flush with the front edge line of the blade shell;
the front edge connecting plate main body section is in a curved plate shape, is basically symmetrical with respect to the front edge line of the blade shell in the chord width direction, comprises a pressure surface connecting plate part positioned at one side of the front edge line of the blade shell and a suction surface connecting plate part positioned at the other side of the front edge line of the blade shell in the chord width direction, and is arranged at the inner side of the pressure surface front edge UD main body section in the thickness direction, and the shape of the outer surface of the suction surface connecting plate part is matched with the shape of the inner surface of the front edge part of the suction surface shell of the wind power blade;
the turnup flange section is in a flat plate shape as a whole, is basically perpendicular to the front edge line of the blade shell in the chord direction width direction, and in the chord direction section, an included angle between the turnup flange section and the pressure surface front edge UD main body section is not smaller than 90 degrees.
2. The wind power blade front edge integrated prefabricated component according to claim 1, wherein the pressure front edge UD main body section, the front edge connecting plate main body section and the flanging flange section are integrally formed and all comprise a plurality of layers of glass fiber reinforced cloth which are sequentially paved from outside to inside and are integrally solidified through resin,
an outermost glass fiber reinforced cloth formed as an outer surface layer of the pressure face front edge UD main body section and the burring flange section, a portion of which in the chord-wise width direction does not exceed the blade shell front edge line formed as an outer surface layer of the pressure face front edge UD main body section, and a portion of which in the chord-wise width direction exceeds the blade shell front edge line formed as an outer surface layer of the burring flange section;
in the glass fiber reinforced cloth layer of the pressure surface front edge UD main body section, the chord direction width of each cloth layer is the same, the cloth layers are stacked and staggered in the thickness direction, the cloth layers which are closer to the outer side are longer in the spreading direction length, and the cloth layers are closer to the front edge line of the blade shell in the chord direction width direction;
in the glass fiber reinforced cloth paving layers of the front edge connecting plate main body section, the chord direction width of each cloth layer is the same, the cloth layers are overlapped and staggered in the thickness direction, the spreading length of the cloth layers which are closer to the outer side is longer, the area covering the pressure surface front edge UD main body section in the chord direction width direction is wider, the area covering the pressure surface front edge UD main body section is formed into the paving layer of the pressure surface connecting plate part, and the rest areas are formed into the paving layer of the suction surface connecting plate part;
and one or more layers of strip-shaped glass fiber reinforced cloth are sequentially paved on the surface of the part, exceeding the front edge line of the blade shell body in the chord direction width direction, of the outermost glass fiber reinforced cloth along the span direction in the glass fiber reinforced cloth paving layer of the flanging flange section.
3. A wind power blade leading edge integrated prefabricated component according to claim 1, wherein glass fiber reinforced cloth materials used for the pressure surface front edge UD main section and the front edge connecting plate main section are different, and the thickness and the span length of the pressure surface front edge UD main section and the front edge connecting plate main section are also different.
4. A wind power blade leading edge integrated prefabricated component according to claim 1, wherein the outer surface of the suction surface connecting plate part is in a curved arc shape, and in terms of structural dimension, a uniform gap is formed between the outer surface of the suction surface connecting plate part and the inner surface of the wind power blade suction surface shell leading edge part, and the uniform gap is used for filling structural glue.
5. A method for manufacturing a wind power blade leading edge integrated prefabricated part according to any one of claims 1 to 4, wherein the method comprises at least the following steps:
SS1, preparation of a die:
the method comprises the steps that a prefabricated part die is fixedly arranged on a support in a hanging mode, the shape and the size of the inner cavity surface of the prefabricated part die are matched with those of the outer surfaces of suction surface connecting plate parts of pressure surface front edge UD main body sections and front edge connecting plate main body sections, a strip-shaped slit extending along the expanding direction is arranged on the inner cavity surface of the prefabricated part die, the chord direction position of the strip-shaped slit is consistent with the front edge line of a blade shell, two silica gel blocks which are positioned on the left side and the right side of the strip-shaped slit in the chord direction width direction and can be adjusted in a left-right moving mode are arranged below the prefabricated part die, gaps between the two silica gel blocks form a die cavity of a flanging flange section, and flanging flange sections with different thicknesses are formed by adjusting the gaps between the two silica gel blocks;
SS2. Preparation of layering:
firstly, cleaning the inner cavity surface of a prefabricated member die, and then paving release cloth on the inner cavity surface;
secondly, paving the outermost glass fiber reinforced cloth, wherein the main body part of the outermost glass fiber reinforced cloth is paved on the surface of the inner cavity of the prefabricated member die, the part of the main body part, which exceeds the front edge line of the blade shell in the chord direction width direction, extends out of the prefabricated member die through the strip-shaped slit, extends into a gap between two silica gel blocks, and one or more layers of strip-shaped glass fiber reinforced cloth are arranged on the glass fiber reinforced cloth extending into the gap along the expanding direction;
sequentially paving a plurality of laminated front edge UD glass fiber reinforced cloths on the outermost glass fiber reinforced cloth on the surface of the inner cavity of the prefabricated part die according to the chord direction and the spreading direction, wherein the spreading direction length of the cloth is longer as the cloth layer is closer to the outer side, and the cloth layer is closer to the front edge line of the blade shell in the chord direction width direction;
then, sequentially laying a plurality of layers of glass fiber reinforced cloth of the front edge connecting plate on the surface of the inner cavity of the prefabricated part die according to the chord direction and the spreading direction, wherein the spreading direction length of the cloth layer is longer as the cloth layer is closer to the outer side, the area covering the pressure front edge UD main body section in the chord direction width direction is wider, the area covering the pressure front edge UD main body section is formed into a layer of the pressure surface connecting plate part, and the rest areas are formed into a layer of the suction surface connecting plate part;
SS3, curing and forming:
paving auxiliary materials on the surface of the inner cavity of the prefabricated part die in sequence, wherein the auxiliary materials at least comprise demolding cloth, isolating films, dense mesh nets, air bridges and vacuum bags, then carrying out vacuum pouring resin for post curing, removing the auxiliary materials after the resin is completely cured, and carrying out edge polishing on the prefabricated part according to design and process requirements to obtain the blade front edge integrated prefabricated part with the flanging flange.
6. The method of claim 5, wherein the chordwise width of the preform mold cavity surface is greater than the chordwise width of the pressure face leading UD body section as integrated with the leading edge web body section.
7. The preparation method of the wind power blade pressure surface shell is characterized by at least comprising the following steps:
SS1. Prefabricated wind power blade leading edge integral parts are prepared in advance according to the method of claim 5 or 6;
SS2. Layering and curing:
firstly, paving an outer skin, a blade root reinforcement prefabricated member and a blade root reinforcement layer under a bolt sleeve on a blade pressure surface shell mould;
then, the front-edge integrated prefabricated part is placed on the front edge position of the blade pressure surface shell mould in a hoisting mode, and the flange flanging section of the front-edge integrated prefabricated part is erected on the edge top surface of the blade pressure surface shell mould, so that the flange flanging section supports and fixes the whole front-edge integrated prefabricated part, and the front-edge integrated prefabricated part is prevented from sliding downwards due to the action of gravity;
then, continuing to lay glass fiber cloth on other areas, which are not covered by the front edge integrated prefabricated part, on the blade pressure surface shell mould, wherein the areas comprise main beams and tail edge UD parts; laying a front edge core material from the front edge of the main beam to a region with a certain distance from a front edge line above the front edge integrated prefabricated component on the blade pressure surface shell mould, and then laying subsequent materials including a tail edge core material, blade root enhancement on a bolt sleeve, an inner skin and the like;
finally, pouring resin and curing the resin;
and SS3, polishing and cutting the flange flanging section of the front-edge integrated prefabricated part to form the blade pressure surface shell after the resin on the blade pressure surface shell mould is cured.
8. The method according to claim 7, wherein the overlap joint treatment is performed between the front edge core material and the front edge integrated prefabricated part above the front edge integrated prefabricated part on the blade pressure surface shell mold, and the chordwise chamfer of the front edge core material is matched with the staggered layer of the chordwise direction of the glass fiber cloth layer of the prefabricated part.
CN202211633038.3A 2022-12-19 2022-12-19 Wind power blade front edge integrated prefabricated component and preparation method thereof Pending CN116061463A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202211633038.3A CN116061463A (en) 2022-12-19 2022-12-19 Wind power blade front edge integrated prefabricated component and preparation method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202211633038.3A CN116061463A (en) 2022-12-19 2022-12-19 Wind power blade front edge integrated prefabricated component and preparation method thereof

Publications (1)

Publication Number Publication Date
CN116061463A true CN116061463A (en) 2023-05-05

Family

ID=86174038

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202211633038.3A Pending CN116061463A (en) 2022-12-19 2022-12-19 Wind power blade front edge integrated prefabricated component and preparation method thereof

Country Status (1)

Country Link
CN (1) CN116061463A (en)

Similar Documents

Publication Publication Date Title
CN113787658B (en) Modular wind turbine blade and method for manufacturing same
CN103538715B (en) A kind of matrix material �� type ear blade terminal and overall curing molding method altogether thereof
TR201810926T4 (en) A method for manufacturing an elongated composite structure.
CN105346105B (en) The making mould and preparation method of a kind of wind electricity blade
CN215320783U (en) Prefabricated tail edge beam structure of large wind turbine blade
CN105346100A (en) Method for manufacturing wind power blade crossbeam mold
CN113386368A (en) Blade forming method for preventing glass fibers on two sides of die-assembling seam of blade root of wind power blade from being layered
CN105673358B (en) A kind of large size trailing edge segmentation pneumatic equipment bladess connection structure and manufacture craft
CN206528102U (en) A kind of T-shaped Material Stiffened Panel forming frock of composite
CN107559155B (en) Wind turbine generator system blade, paving bonding method thereof and wind turbine generator system
CN214726637U (en) Root splicing type wind power blade
CN111923443A (en) Wind power blade and forming method thereof
CN110733188A (en) wind power blade trailing edge vertical surface area filling method
CN116061463A (en) Wind power blade front edge integrated prefabricated component and preparation method thereof
CN112537050A (en) Manufacturing method of wind power blade main beam
CN109878105B (en) Fiber layering method for wind power blade manufacturing
CN218838706U (en) Wind-powered electricity generation blade leading edge integrative prefabricated component
CN110733187A (en) Mold closing gap adjusting method for direct bonding area of rear edge of wind turbine blade
CN205255541U (en) Preparation mould of wind -powered electricity generation blade
CN112848349A (en) Root spliced wind power blade and manufacturing method thereof
CN113942252B (en) Method for integrally pouring and forming adhesive flange mold and blade skin
CN112060628B (en) Method for solving stress lines and wrinkles on end face of blade root by using flanging die
CN114953517A (en) Segmented blade mold, positioning tool and segmented blade forming method
CN112849436B (en) Carbon fiber composite material truss rib and preparation method thereof
CN218838707U (en) Wind power blade leading edge UD prefabricated part with flange flanging

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination