CN106499578B - Wind power blade tip extension structure and method - Google Patents
Wind power blade tip extension structure and method Download PDFInfo
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- CN106499578B CN106499578B CN201611174357.7A CN201611174357A CN106499578B CN 106499578 B CN106499578 B CN 106499578B CN 201611174357 A CN201611174357 A CN 201611174357A CN 106499578 B CN106499578 B CN 106499578B
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- 238000000034 method Methods 0.000 title claims abstract description 18
- 239000000853 adhesive Substances 0.000 claims abstract description 29
- 230000001070 adhesive effect Effects 0.000 claims abstract description 29
- 230000007480 spreading Effects 0.000 claims abstract description 11
- 238000003892 spreading Methods 0.000 claims abstract description 11
- 238000009434 installation Methods 0.000 claims abstract description 7
- 210000002105 tongue Anatomy 0.000 claims description 48
- 239000000835 fiber Substances 0.000 claims description 14
- 238000005520 cutting process Methods 0.000 claims description 12
- 239000004744 fabric Substances 0.000 claims description 9
- 230000007704 transition Effects 0.000 claims description 9
- 239000002131 composite material Substances 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 238000002347 injection Methods 0.000 claims description 6
- 239000007924 injection Substances 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 5
- 238000000576 coating method Methods 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 5
- 239000007767 bonding agent Substances 0.000 claims description 4
- 238000007493 shaping process Methods 0.000 claims 1
- 230000008859 change Effects 0.000 abstract description 3
- 230000007547 defect Effects 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000010248 power generation Methods 0.000 description 3
- 238000009417 prefabrication Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
Classifications
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- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- 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
Abstract
The invention discloses a wind turbine blade tip extension structure and a wind turbine blade tip extension method, wherein the power of a wind turbine generator is improved by increasing the length of an active wind turbine blade, a blade tip extension section is composed of a plurality of sheet bodies, each sheet body is adhered to a base blade, each sheet body adopts a wedge-shaped layering to relieve the abrupt change of the total thickness, a prefabricated adhesive tongue is used for increasing the adhesive strength, and the tooth-shaped end part and a spreading groove structure are designed to relieve the stress concentration of a connecting end part, inhibit fatigue crack expansion and improve the bearing capacity and reliability of adhesive joint. And prefabricating a bonding tongue at the tip extension part of the region bonded with the base blade, increasing the bonding stress area, bonding the pressure surface and the suction surface extension section at the tip end to form a continuous whole, and reserving Z-shaped edges for bonding at the side edges of the extension section sheet bodies for bonding all parts along the spanwise splicing line. The blade tip extension structure of the invention has the characteristics of high connection strength and reliability, sufficient installation margin and consistent aerodynamic profile.
Description
Technical Field
The invention relates to a wind driven generator blade, in particular to a wind driven generator blade tip extension structure and a wind driven generator blade tip extension method, and belongs to parts of wind power generation equipment.
Background
With the change of global climate, the wind resource characteristics of the wind farm can also change to a certain extent, so that the output power of the matched wind turbine under the original wind resource characteristics is reduced. The wind turbine mainly captures wind energy by wind power blades, and the length of the wind power blades directly influences the capability of the wind turbine for capturing the wind energy and the output power of a wind generating set. The length of the wind power blade is increased at low wind speed, so that the generating capacity of the wind turbine can be effectively improved.
In addition, the cost of the wind power blade is about 15% -20% of the cost of the whole wind power generator set, if the whole replacement of the active wind power blade is carried out, the excessive transformation cost is increased, and the power generation cost is increased, so that the whole replacement of the blade is not beneficial to improving the transformation economy of the wind power generator set. The wind power blade extension section and the implementation process with reliable structure and simple implementation are designed, and the improvement cost is very important. The existing blade tip extension technology has the defects that the blade tip extension sections of the blades are of an integrated structure, and the blade tip extension sections and the basic blades are connected together mainly through bonding or by means of mechanical connection, and the main appearance is that: the blade tip extension section needs to be integrally processed and manufactured, has the defects of high production cost and low production efficiency, and cannot meet the actual requirements; the extended blade tip section and the base blade are connected together by bonding or by mechanical connection, so that the defects of low connection strength, unreasonable stress distribution in a connection area and the like exist, and the service life of the extended blade is seriously influenced.
Disclosure of Invention
Aiming at the problems, the technical problem to be solved by the invention is to provide a wind power blade tip extension structure and a wind power blade tip extension method, wherein the blade tip extension section realizes the power improvement of a wind power generation set by increasing the length of an active wind power blade, the blade tip extension section adopts block prefabrication and splicing forming, the production efficiency is greatly improved, the installation of the blade tip extension section is simple and convenient, in addition, the pneumatic appearance of the blade is not influenced, the bonding strength between the blade sheets is increased by adopting a Z-shaped bonding groove splicing structure between the prefabricated sheet bodies of the blade tip extension section, the bonding strength is increased by adopting a prefabricated bonding tongue between the blade tip extension section and a basic blade section, in addition, the stress concentration of a bonding surface can be greatly reduced by adopting an obtuse angle of the prefabricated bonding tongue, and the end faces of the two ends of the bonding tongue adopt wedge-shaped transition and tooth-shaped end parts; the tail end of the blade tip extension section is in wedge-shaped transition and comprises the tooth-shaped end part and the spreading groove, so that the structure can effectively reduce the concentration of local bonding stress, inhibit the continuous expansion of cracks of a bonding layer under fatigue load, and improve the bonding strength and the fatigue life.
According to one aspect of the invention, the technical scheme adopted by the invention for solving the technical problems is as follows:
the wind power blade tip extension structure comprises a basic blade segment and a blade tip extension segment, and is characterized in that the basic blade segment and the blade tip extension segment are connected together through a prefabricated bonding tongue, wherein,
the blade tip extension section comprises an extension section front edge sheet body, an extension section suction surface sheet body, an extension section tail edge sheet body and an extension section pressure surface sheet body which are prepared separately, wherein each sheet body is paved by fiber composite materials in a prefabricated die; two side edges of each sheet body are respectively provided with an adhesive groove, and two adjacent sheet bodies are combined together through the adhesive grooves on the respective side edges; one end of each sheet body, which is close to the blade root, is formed into a wedge-shaped transitional tooth-shaped end part, and a spreading groove is formed in the tooth-shaped end part; each extension employs a wedge lay design to mitigate abrupt changes in overall thickness. Stress concentration of the connecting end part is relieved by designing the tooth-shaped end part and the spanwise groove structure, fatigue crack growth is restrained, and the bearing capacity and reliability of the cementing are improved.
The end, close to the blade root, of the blade tip extension section is overlapped with the end, close to the blade tip, of the base blade section, and an adhesive is arranged in the overlapped area; the blade extension section is connected with the base blade section in a reinforcing way by the prefabricated bonding tongue, one end of the prefabricated bonding tongue is clung to the inner side of the base blade section, the other end of the prefabricated bonding tongue is clung to the inner side of the blade tip extension section, and bonding areas of the prefabricated bonding tongue, the base blade section and the blade tip extension section are all provided with adhesives.
Preferably, the prefabricated bonding tongue is integrally zigzag-shaped and comprises two corners, and each corner is an obtuse angle.
Preferably, both ends of the prefabricated bonding tongue are wedge-shaped transitional tooth-shaped end parts.
Preferably, the prefabricated bonding tongues are prefabricated from composite materials, can be prefabricated into a single strip, then laid in parallel, and can also be prefabricated into a whole.
Preferably, the bonding grooves are Z-shaped bonding grooves, and two adjacent blade tip extension section sheets are combined together through the Z-shaped bonding grooves on the respective sides.
Preferably, the Z-shaped bonding grooves are formed on two sides of each blade body of the blade tip extension section along the expanding direction and used for engaging each prefabricated blade body, and the Z-shaped bonding grooves can be prefabricated together with each blade tip extension section blade body or can be manufactured by adopting a cutting method after each blade tip extension section blade body is formed.
According to another aspect of the present invention, the present invention further provides a wind power blade tip extension method for solving the technical problem, wherein the wind power blade tip extension method includes the following steps:
SS1, cutting off a part of the tip of the basic blade along the spanwise direction to form a connecting end face.
SS2, prefabricating an extension front edge sheet body, an extension suction surface sheet body, an extension tail edge sheet body and an extension pressure surface sheet body in a die by adopting a vacuum suction injection method, and cutting fiber cloth of an interface bonding layer of each sheet body along the extending direction to form a saw tooth slot so as to form a saw tooth end part with wedge-shaped transition during forming; the Z-shaped bonding grooves on the two sides of each sheet body can be prefabricated, or can be formed by integral sheet forming and then cutting; after each sheet is cured from the mold, a spanwise groove is cut into the zigzag end of each sheet.
And SS3, manufacturing a prefabricated bonding tongue, paving fiber cloth with a grooved edge on a die, and forming the bonding tongue by vacuum suction injection, wherein the fiber cloth can be prefabricated into a plurality of strips, can be prefabricated into a whole according to the widths of the suction surface sheet body of the extension section and the pressure surface sheet body of the extension section, and can also be cut from a large fiber composite material.
And SS4, respectively coating adhesive on the outer side of the connecting end of the basic blade segment, the inner sides of the suction surface sheet body of the extension segment and the pressure surface sheet body of the extension segment, and tightly attaching the inner sides of the suction surface sheet body of the extension segment and the pressure surface sheet body of the extension segment to the outer side of the basic blade segment, and heating and curing.
SS5 adhering the two ends of the prefabricated adhesive tongue to the inner sides of the pressure surfaces of the suction surface and the extension section of the base blade section and the extension section, and adhering the two ends with adhesive.
SS6, according to the installation positions of the suction surface and the pressure surface of the extension section, the front edge sheet body and the tail edge sheet body of the extension section are respectively adjusted to the corresponding positions by using positioning equipment, and the adhesive is coated in the bonding groove and then heated and cured to form a whole.
Compared with the prior art, the wind power blade tip extension structure and method have the following remarkable technical effects:
1. the blade tip extension section adopts a structure of block prefabrication, splicing and forming, so that the production efficiency is greatly improved, and the convenience of installation of the blade tip extension section is improved.
2. The Z-shaped bonding groove splicing structure is adopted among all the sheet bodies of the blade tip extension section, so that the pneumatic appearance of the blade is not affected, and the bonding strength among the sheet bodies is improved.
3. The connection part of the blade tip extension section and the basic blade section is reinforced by adopting a prefabricated bonding tongue, so that the bonding strength of the blade tip extension section and the basic blade section is increased.
4. The obtuse angle is adopted at the corners of the prefabricated bonding tongues, so that stress concentration of bonding surfaces can be greatly reduced, and wedge-shaped transition and tooth-shaped end parts are adopted at the end surfaces of the two ends of the bonding tongues; the tail end of the blade tip extension section is in wedge-shaped transition and comprises the tooth-shaped end part and the spreading groove, so that the structure can effectively reduce the concentration of local bonding stress, inhibit the continuous expansion of cracks of a bonding layer under fatigue load, and improve the bonding strength and the fatigue life.
Drawings
FIG. 1 is a schematic view of an extended tip structure of a wind turbine blade of the present invention;
FIG. 2 is a schematic structural view of an extension of a wind blade tip;
FIG. 3 is a cross-sectional view of a tip extension of section A-A;
FIG. 4 is a schematic illustration of a tip extension section connected to a base blade section;
FIG. 5 is a top view of a tip extension section connected to a base blade section;
FIG. 6 is a three-dimensional view of a tip extension segment connected to a base blade segment;
FIG. 7 is a schematic view of an integrally formed prefabricated bonding tongue;
FIG. 8 is a schematic view of a prefabricated adhesive tab made in pieces.
Detailed Description
The present invention will be further described in detail below with reference to specific embodiments and with reference to the accompanying drawings, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be noted that the following description is only a preferred embodiment of the present invention, and the scope of the present invention is not limited thereby. 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. 1, the wind power blade tip extension structure comprises a basic blade segment 1 and a tip extension segment 2, wherein the tip extension segment 2 is connected with the end part of the basic blade segment 1 in an adhesive manner, and the tip extension segment 2 is composed of four sheet structures which are prepared in a split manner.
As shown in fig. 2 and 3, the blade tip extension section 1 is formed by four separately prepared extension section front edge sheet bodies 21, extension section suction surface sheet bodies 22, extension section tail edge sheet bodies 23, extension section pressure surface sheet bodies 24 and the like to form an aerodynamic profile, Z-shaped bonding grooves 25 are formed in the extending directions of the blades along the edges of two sides of each sheet body, the side edges of each sheet body are connected together through the Z-shaped bonding grooves 25, the Z-shaped bonding grooves 25 on the side edges of two adjacent sheet bodies are mutually lapped and buckled together, and an adhesive is filled in a lapping area. The blade tip extension section 2 adopts a structure of block prefabrication, splicing and forming, so that the production efficiency is greatly improved, and the convenience of installation of the blade tip extension section is greatly improved. The Z-shaped bonding groove splicing structure is adopted among the sheet bodies, so that the pneumatic appearance of the blade is not affected, and the bonding strength among the sheet bodies is increased.
As shown in fig. 4 to 6, the end of the blade extension 2 near the blade root is lapped with the end of the base blade segment 1 near the blade tip and is strengthened and connected by using a prefabricated bonding tongue 3. The tip extension section 2 is provided with a tooth-shaped end 26 which is in wedge transition integrally at one end close to the blade root, a spreading groove 27 is arranged on the inclined-plane-shaped tooth-shaped end 26 of the tip extension section 2, the inner side of the inclined-plane-shaped tooth-shaped end 26 is lapped with the outer side of the end of the base blade section 1 and is tightly attached to the outer side of the base blade section, and the inner side and the outer side are connected with the base blade section by using the adhesive 4. Further, the step at the connection of the blade extension 2 and the base blade segment 1 is reinforced by a prefabricated bonding tongue 3, one end of the prefabricated bonding tongue 3 is clung to the inner side of the base blade segment 1, the other end is clung to the inner side of the blade tip extension 2, and the prefabricated bonding tongue is bonded by using an adhesive 4. The joint of the blade extension section 2 and the basic blade section 1 is reinforced by adopting the prefabricated bonding tongue 3, so that the bonding strength between the blade tip extension section 2 and the basic blade section 1 can be effectively increased.
As shown in fig. 7 and 8, the whole prefabricated bonding tongue 3 is zigzag and comprises two corners, the two corners are obtuse angles, and the stress concentration of the bonding surface can be greatly reduced by adopting the obtuse angles to the corners of the prefabricated bonding tongue 3. Both ends of the prefabricated adhesive tongue 3 are wedge-shaped transitions and each end comprises a toothed end 31. As shown in fig. 7, the prefabricated bonding tongue 3 is prefabricated from a composite material, and the prefabricated bonding tongue 3 may be prefabricated as a single body. As shown in fig. 8, the prefabricated adhesive tongues 3 may also be prefabricated as a single strip and then laid in parallel. The strip-shaped prefabricated bonding tongues 3 are paved on the inner sides of the blades along the chord direction and are connected with the blades through bonding agents 9.
The wind power blade tip extension process comprises the following steps of:
(1) Cutting off a part of the tip of the basic blade 1 along the expanding direction to form a connecting end face;
(2) The front edge sheet body 21, the suction surface sheet body 22, the tail edge sheet body 23 and the pressure surface sheet body 24 of the extension section are prefabricated and formed on a die by adopting a vacuum suction injection method, and the fiber cloth of the interface bonding layer of each sheet body is cut along the expanding direction to form short small open grooves, so that the zigzag end parts 26 are formed during forming. The Z-shaped bonding grooves 25 on the two sides of each sheet body can be formed by a prefabricating method or can be formed by integral sheet forming and then cutting; after curing the leading edge 21, suction surface 22, trailing edge 23, and pressure surface 24 of the extension from the mold, the spanwise grooves 27 are cut into the serrated end 26.
(3) The prefabricated bonding tongues 3 are manufactured, fiber cloth with grooved edges is paved on a die, so that the fiber cloth forms a zigzag end part 31 during forming, and the fibers can be prefabricated into a plurality of strips through vacuum suction injection to form the bonding tongues 3, can be prefabricated into a whole according to the widths of the suction surface 22 of the extension section and the pressure surface 24 of the extension section, and can be cut into a whole.
(4) The adhesive 4 is respectively coated on the outer side of the connecting end of the basic blade segment 1 and the inner sides of the suction surface 22 and the pressure surface 24 of the extension segment, and the inner sides of the suction surface 22 and the pressure surface 24 of the extension segment are tightly attached to the outer side of the basic blade segment 1 and are heated and solidified.
(5) The two ends of the prefabricated bonding tongue 3 are closely attached to the inner sides of the base blade segment 1, the suction surface 22 of the extension segment and the pressure surface 24 of the extension segment, and are bonded by the bonding agent 4.
(6) According to the installation positions of the suction surface 22 and the pressure surface 24 of the extension section, the front edge 21 and the tail edge 23 of the extension section are respectively adjusted to corresponding positions by using positioning equipment, and the adhesive 4 is coated in the Z-shaped bonding groove 25 and then is heated and solidified to form a whole.
The above specific embodiments are used for further detailed description of the objects, technical solutions and advantageous effects of the present invention. It should be understood that the foregoing description is only of specific embodiments of the present invention and is not intended to limit the invention, but rather should be construed to cover all modifications, equivalents, improvements and alternatives falling within the spirit and principles of the present invention.
Claims (6)
1. The wind power blade tip extension structure comprises a basic blade segment and a blade tip extension segment, and is characterized in that the basic blade segment and the blade tip extension segment are connected together through a prefabricated bonding tongue, wherein,
the blade tip extension section comprises an extension section front edge sheet body, an extension section suction surface sheet body, an extension section tail edge sheet body and an extension section pressure surface sheet body which are prepared separately, wherein each sheet body is paved by fiber composite materials in a prefabricated die; two sides of each sheet body are respectively provided with a bonding groove, each bonding groove is a Z-shaped bonding groove, and two adjacent sheet bodies are combined together through the Z-shaped bonding grooves of the respective sides and the bonding agent coated in the Z-shaped bonding grooves; one end of each sheet body, which is close to the blade root, is formed into a wedge-shaped transitional tooth-shaped end part, and a spreading groove is formed in the tooth-shaped end part;
the base blade segment is formed by cutting off a part of the base blade in the spanwise direction through the blade tip of the base blade, one end, close to the blade root, of the blade tip extension segment is overlapped with the connecting end face, close to the blade tip, of the base blade segment, and an adhesive is arranged in an overlapped area;
the connection part of the blade tip extension section and the basic blade section is reinforced and connected by the prefabricated bonding tongue, one end of the prefabricated bonding tongue is clung to the inner side of the basic blade section, the other end of the prefabricated bonding tongue is clung to the inner side of the blade tip extension section, and bonding areas of the prefabricated bonding tongue, the basic blade section and the blade tip extension section are provided with bonding agents;
the prefabricated bonding tongue is Z-shaped along the spreading direction, comprises two corners in the spreading direction, each corner is an obtuse angle, two ends of the prefabricated bonding tongue in the spreading direction are provided with tooth-shaped end parts in wedge-shaped transition, and grooves extending along the spreading direction are also formed in the tooth-shaped end parts;
and wherein, when the base blade segment is connected to the tip extension by the prefabricated bonding tongue, the connection is made as follows:
firstly, respectively coating adhesives on the outer sides of the connecting ends of the basic blade segments and the inner sides of the suction surface sheet bodies and the pressure surface sheet bodies of the extension segments in the blade tip extension segments, and tightly attaching the inner sides of the suction surface sheet bodies and the pressure surface sheet bodies of the extension segments to the outer sides of the basic blade segments, and heating and curing;
then, two ends of the prefabricated bonding tongue are respectively clung to the inner sides of the basic blade section, the suction surface sheet body of the extension section and the pressure surface sheet body of the extension section, and the two ends are bonded by using an adhesive;
and then, according to the mounting positions of the suction surface sheet body and the pressure surface sheet body of the extension section, respectively adjusting the front edge sheet body and the tail edge sheet body of the extension section to corresponding positions by using positioning equipment, coating an adhesive in the bonding groove, and then heating and curing to form a whole.
2. The wind power blade tip extension structure of claim 1, wherein the prefabricated bonding tongue is prefabricated from a composite material.
3. The wind power blade tip extension structure of claim 1, wherein the prefabricated adhesive tabs are prefabricated as a single strip and then laid in parallel, or prefabricated as a single piece.
4. The wind power blade tip extension structure according to claim 1, wherein the Z-shaped bonding grooves are formed on both sides of each blade body of the tip extension section in the extending direction for engaging each prefabricated blade body, are prefabricated together with each blade tip extension section blade body, or are prepared by cutting after each blade tip extension section blade body is formed.
5. The wind power blade tip extension structure according to claim 1, wherein the extension pressure surface body and the extension suction surface body are used as main bearing portions, and the bonding areas thereof extend to the blade tip.
6. A wind turbine blade tip extension method according to claim 1, characterized in that the wind turbine blade tip extension method comprises the steps of:
SS1, cutting off a part of the tip of the basic blade along the spanwise direction to form a connecting end face of the basic blade segment;
SS2, prefabricating the front edge sheet body, the suction surface sheet body, the tail edge sheet body and the pressure surface sheet body of the extension section in the mold by adopting a vacuum suction injection method, cutting the fiber cloth of the bonding layer of the interface of each sheet body along the extending direction to form a saw tooth slot, so that the saw tooth slot forms a saw tooth end part with wedge-shaped transition during forming; the Z-shaped bonding grooves on two sides of each sheet body are formed by adopting a prefabricating method, or the sheet body is formed by shaping and then cutting; after each sheet body is solidified and taken out from the die, a spreading groove is cut at the zigzag end part of each sheet body;
SS3, manufacturing a prefabricated bonding tongue, paving fiber cloth with a grooved edge on a die, forming the fiber cloth into the bonding tongue through vacuum suction injection, and prefabricating a plurality of bonding tongues, or prefabricating a whole block according to the widths of the suction surface sheet body of the extension section and the pressure surface sheet body of the extension section, or cutting the bonding tongue from a large fiber composite material;
SS4, coating adhesive on the outside of the connecting end of the basic blade segment, the inside of the suction surface sheet body of the extension segment and the inside of the pressure surface sheet body of the extension segment, and tightly attaching the inside of the suction surface sheet body of the extension segment and the inside of the pressure surface sheet body of the extension segment to the outside of the basic blade segment, and heating for curing;
SS5, adhering the two ends of the prefabricated adhesive tongue to the inner sides of the basic blade segment, the suction surface sheet body of the extension segment and the pressure surface sheet body of the extension segment, and adhering the two ends with adhesive;
and SS6, according to the installation positions of the suction surface sheet body of the extension section and the pressure surface sheet body of the extension section, respectively adjusting the front edge sheet body of the extension section and the tail edge sheet body of the extension section to corresponding positions by using positioning equipment, coating an adhesive in the Z-shaped bonding groove, and then heating and curing to form a whole.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107718607B (en) * | 2017-11-09 | 2024-03-29 | 国能联合动力技术(连云港)有限公司 | Fan blade tip repairing method |
| CN109185046A (en) * | 2018-09-21 | 2019-01-11 | 中科国风检测（天津）有限公司 | Connecting structure and connecting method for wind power blade extension section |
| CN109878105B (en) * | 2019-03-20 | 2021-05-07 | 上海电气风电集团股份有限公司 | Fiber layering method for wind power blade manufacturing |
| CN113787658B (en) * | 2021-09-10 | 2022-06-14 | 常州市宏发纵横新材料科技股份有限公司 | Modular wind turbine blade and method for manufacturing same |
| CN114263667B (en) * | 2021-12-31 | 2024-01-23 | 中国华能集团清洁能源技术研究院有限公司 | Blade extension device |
| CN114474817B (en) * | 2022-01-17 | 2023-11-03 | 华能湖北新能源有限责任公司 | Device and method for connecting blade tip structures of horizontal-axis wind turbine generator system |
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| CN1750921A (en) * | 2003-02-24 | 2006-03-22 | 贝尔直升机泰克斯特龙公司 | Interlocking tooth bond for assembly of fiber composite laminates |
| CN102027230A (en) * | 2008-03-28 | 2011-04-20 | 刀具动力学有限公司 | A wind turbine blade |
| CN103291536A (en) * | 2012-02-29 | 2013-09-11 | 通用电气公司 | Blade insert for a wind turbine rotor blade and related method |
| JP2014238088A (en) * | 2013-05-29 | 2014-12-18 | シーメンス アクチエンゲゼルシヤフトＳｉｅｍｅｎｓ Ａｋｔｉｅｎｇｅｓｅｌｌｓｃｈａｆｔ | Wind power turbine blade and method of assembling wind power turbine blade |
| CN105415717A (en) * | 2015-11-04 | 2016-03-23 | 东方电气风电有限公司 | Blade tip improvement or repairing method of wind turbine blade and blade tip lengthened section structure |
| CN105822497A (en) * | 2016-05-20 | 2016-08-03 | 中国科学院工程热物理研究所 | Wind turbine vane apex extending device and method |
| CN206352557U (en) * | 2016-12-18 | 2017-07-25 | 中国科学院工程热物理研究所 | A kind of wind power blade tip lightening extending structure |
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