CN103909662B - A kind of method of the root of fan blade pre-embedded bolt cover adopting pultrude process to manufacture - Google Patents
A kind of method of the root of fan blade pre-embedded bolt cover adopting pultrude process to manufacture Download PDFInfo
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- CN103909662B CN103909662B CN201410172748.XA CN201410172748A CN103909662B CN 103909662 B CN103909662 B CN 103909662B CN 201410172748 A CN201410172748 A CN 201410172748A CN 103909662 B CN103909662 B CN 103909662B
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- 238000000034 method Methods 0.000 title claims abstract description 59
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 19
- 238000007493 shaping process Methods 0.000 claims abstract description 12
- 238000002360 preparation method Methods 0.000 claims abstract description 4
- 239000002184 metal Substances 0.000 claims description 33
- 239000003365 glass fiber Substances 0.000 claims description 17
- 229920005989 resin Polymers 0.000 claims description 14
- 239000011347 resin Substances 0.000 claims description 14
- 238000010438 heat treatment Methods 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 8
- 239000011521 glass Substances 0.000 claims description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000004744 fabric Substances 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 238000013461 design Methods 0.000 claims description 5
- 239000003292 glue Substances 0.000 claims description 5
- 230000010412 perfusion Effects 0.000 claims description 5
- 238000005422 blasting Methods 0.000 claims description 4
- 229910000851 Alloy steel Inorganic materials 0.000 claims description 3
- 229920006387 Vinylite Polymers 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 claims description 3
- 239000003822 epoxy resin Substances 0.000 claims description 3
- 229920000647 polyepoxide Polymers 0.000 claims description 3
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 3
- 230000003746 surface roughness Effects 0.000 claims description 3
- 230000037452 priming Effects 0.000 claims description 2
- 238000007711 solidification Methods 0.000 claims description 2
- 230000008023 solidification Effects 0.000 claims description 2
- 240000007182 Ochroma pyramidale Species 0.000 claims 1
- 229920005749 polyurethane resin Polymers 0.000 claims 1
- 238000009787 hand lay-up Methods 0.000 abstract description 3
- 239000011229 interlayer Substances 0.000 abstract description 3
- 239000010410 layer Substances 0.000 description 5
- 238000000465 moulding Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 230000008595 infiltration Effects 0.000 description 2
- 238000001764 infiltration Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
- 239000008832 zhongfu Substances 0.000 description 1
Classifications
-
- 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
- B29C70/521—Pultrusion, i.e. forming and compressing by continuously pulling through a die and impregnating the reinforcement before the die
-
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Composite Materials (AREA)
- Mechanical Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a kind of method of the root of fan blade pre-embedded bolt cover adopting pultrude process to manufacture, the method comprises the preparation of pre-embedded bolt cover prefabricated section and pre-embedded bolt overlaps prefabricated section and fan blade is shaping.The present invention makes pre-embedded bolt cover prefabricated section by pultrude process, pultrude process has continuity, industrialization degree is high, production efficiency is high, it is accurately high that its product made has steady quality, size, the advantages such as intensity is large, well can meet root of blade load large, require on the fan blade that connecting bolt quantity is many.Can overcome and adopt hand lay-up to paste the laying caused discontinuous, interlayer is uneven, easily occurs fold, the problem that bubble etc. are not enough.
Description
Technical field
Patent of the present invention relates to a kind of root of fan blade and adopts pre-embedded bolt cover to manufacture the method for root of blade, be specifically related to one and pass through pultrusion molding process of glass fiber reinforced plastic, manufacture pultrusion bolt sleeve built-in fitting, use the arrangement of the bolt sleeve built-in fitting of pultrusion root of blade and blade shell overall perfusion shaping, make the method that root of blade pre-embedded bolt overlaps.
Background technology
Wind Power In China industry was from 2005, and through the fast development of 9 years, wind-driven generator set product obtained abundant fast, and type has had tens kinds.Its wind field covered is from surpassing a class to weak four classes.
Wind wheel blade in the wind power generating set of Lianyungang Zhongfu Lianzhong Composite Material Group Co., Ltd's development & production.Length has extended to 75 meters by 31 meters.Fan blade is one of critical component transforming wind energy, its traveling comfort to wind energy conversion system generating and important, horizontal axis wind-driven generator group wind wheel blade is connected with axial fan hub by using high-strength bolt, along with the growth of length of blade, leaf weight also increases, suffered by blade, load also increases, and high strength connecting bolt need bear and also increase from the various load on blade thereupon.
At present, domestic fan blade generally adopts root to adopt perforating type to install root of blade connecting bolt, this kind of method for root of fan blade bearing load less and bolt to install application quantitative fan blade more successful, but along with the increase of Wind turbines power, length and the root size thereof of fan blade supporting are with it also increasing, its weight also increases a lot thereupon, this just causes root of fan blade connecting bolt will bear larger load, also just higher to its performance requirement, larger for satisfactory its difficulty of root bolt of exploitation, the method that exploitation strengthens root performance becomes the approach of dealing with problems.
Summary of the invention
Goal of the invention: the object of the invention is to solve the deficiencies in the prior art, there is provided a kind of steady quality, size accurate, workable, adhesive property is reliable, bonding strength is high, the method for the root of fan blade pre-embedded bolt cover that the employing pultrude process that production efficiency is high manufactures.The fan blade that root of fan blade pre-embedded bolt sleeve forming method provided by the invention prepares, can meet the fan blade that root of fan blade bearing load is comparatively large or bolt quantity is many.
Technical scheme: in order to realize object of the present invention, the technical solution used in the present invention is:
A method for the root of fan blade pre-embedded bolt cover adopting pultrude process to manufacture, it comprises the following steps:
The preparation of pre-embedded bolt cover prefabricated section:
A, first get metal bolts cover, first with the first connector, metal bolts cover is coupled together with changeover portion, described changeover portion is made up of steel pipe or core, steel duct needs filling with light material, then blasting treatment is carried out to metal bolts cover and changeover portion outer surface, increase its surface roughness, then several metal bolts cover employing second connector is coupled together and obtain metal bolts cover bar;
B, according to production engineering specifications, the metal bolts coupled together with the first connector overlapped with changeover portion and be placed in the pipe die of extruding equipment by several metal bolts covers that the second connector couples together, then the glass fiber yarn designed is arranged in creel, after setting technological parameter, then with extruding equipment, glass fiber yarn tractive is passed through collection creel, glue groove, multiple yarn dividing plate side by side, traction enters mould, allow metal bolts overlap bar and be soaked with resin glass fiber yarn in mould, pass through pultrusion, be heating and curing shaping, then pre-embedded bolt cover prefabricated section is cut into through cutting machine by dimensional requirement,
Pre-embedded bolt cover prefabricated section and fan blade shaping:
Blade mold root is laid according to technological design the glass fabric of a given layer, the pre-embedded bolt completed cover prefabricated section is arranged in blade mold root, and with bolt, pre-embedded bolt is overlapped prefabricated section and be fixed on the locating flange of blade mold root, then on pre-embedded bolt cover prefabricated section, lay the glass fabric of a given layer, lay vacuum film, set up priming by vacuum system, then pre-embedded bolt is overlapped prefabricated section and blade integral perfusion resin, be heating and curing shaping.After blade integral completes, until install root bolt operation time, can directly metal bolts overlap in construction bolt.
Preferably, the method for the root of fan blade pre-embedded bolt cover that above-described employing pultrude process manufactures, described metal bolts cover adopts 42CrMoA steel alloy to make.Have high strength, stable connection is reliable, can meet the needs that fan blade top load runs.And bolt sleeve size requires to design bolt sleeve size according to root of fan blade size and bolt quantity.
Preferably, the method for the root of fan blade pre-embedded bolt cover that above-described employing pultrude process manufactures, described light material is the materials such as PVC.
Preferably, the method for the root of fan blade pre-embedded bolt cover that above-described employing pultrude process manufactures, described glue groove is built with epoxy resin or vinylite.
Preferably, the method for the root of fan blade pre-embedded bolt cover that above-described employing pultrude process manufactures, described glass fiber yarn adopts 1109 strands of direct yarns of 4800TEX.
Preferably, the method of the root of fan blade pre-embedded bolt cover that above-described employing pultrude process manufactures, pultrusion speed is less than 0.1m/min, and in pipe die, the temperature of each heating plate can be arranged according to the temperature of resin manufacturer's recommended, thus realization is heating and curing shaping.
Root of fan blade pre-embedded bolt sleeve forming method provided by the invention, wherein bolt sleeve end connects wedge metal part, can ensure that swivel nut end seamlessly transits, and increases the degree that is connected firmly.Metal bolts cover outer surface of the present invention, through blasting treatment, can have sufficient bonding plane, can effectively avoid bonding gap and hole, improve the bonding reliability energy of metal bolts cover with the glass fiber yarn being soaked with resin.
Root of fan blade pre-embedded bolt sleeve forming method of the present invention, being prepared in independent mould of pre-embedded bolt cover first manufactures, and without the need to taking the main mould of blade shell, can effectively improve production efficiency.
The present invention adopts pultrusion molding process that root of fan blade metal bolts cover is become root of fan blade pre-embedded bolt cover with glass fiber yarn and resin pultrusion, bolt sleeve is arranged in root of fan blade, then shaping together with root of fan blade glass layer, the pultrude process utilized is continuous print, the pre-embedded bolt cover steady quality made, size are accurate, can overcome and adopt hand lay-up to paste the laying caused discontinuous, interlayer is uneven, easily there is fold, the deficiency of the unfavorable conditions such as bubble.Adopt pultrusion continuous producing method of the present invention, root pre-embedded bolt cover is wrapped in stretching fiber inside, greatly can provide production efficiency, and can product quality and performances be ensured, root intensity is high, can well meet 5MW and more than, fan blade 75 meters long and more than, the fan blade that load requirements is large.
Beneficial effect: compared to the prior art the method for the root of fan blade pre-embedded bolt cover of employing pultrude process provided by the invention manufacture has the following advantages:
The root of fan blade pre-embedded bolt sleeve forming method provided is provided, pre-embedded bolt cover prefabricated section is made by pultrude process, pultrude process has continuity, industrialization degree is high, production efficiency is high, it is accurately high that its product made has steady quality, size, and the advantages such as intensity is large, can well meet the fan blade that load suffered by root of fan blade is beaten or root connecting bolt is many.Can overcome and adopt hand lay-up to paste the laying caused discontinuous, interlayer is uneven, easily occurs fold, the problem that bubble etc. are not enough.
And the present invention adopts bolt pre-embedded bolt to be overlapped prefabricated section to be fixed on the locating flange of blade mold root, finally pre-embedded bolt is overlapped prefabricated section and blade integral pours into curing molding, positional accuracy is high, connects more firm, bonding firmness is high, and reliability is strong.
Accompanying drawing explanation
Fig. 1 is the structural representation of pre-embedded bolt of the present invention cover prefabricated section.
Fig. 2 is the process schematic that employing pultrude process of the present invention manufactures root of fan blade pre-embedded bolt cover.
Fig. 3 is the mounting structure schematic diagram of pipe die of the present invention.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, illustrate the present invention further, these embodiments should be understood only be not used in for illustration of the present invention and limit the scope of the invention, after having read the present invention, the amendment of those skilled in the art to the various equivalent form of value of the present invention has all fallen within the application's claims limited range.
A method for the root of fan blade pre-embedded bolt cover adopting pultrude process to manufacture, is characterized in that comprising the following steps:
The preparation of pre-embedded bolt cover prefabricated section:
A, as shown in Figure 1, first metal bolts cover 1 is got, with the first connector 4-1, metal bolts cover 1 and changeover portion 2 are linked together, described changeover portion 2 is made up of steel pipe or core, steel pipe central filler lightweight PVC material 3, then blasting treatment is carried out to metal bolts cover 1 and changeover portion 2 outer surface, increase its surface roughness, then adopt the second connector 4-2 to couple together in several metal bolts cover 1 and obtain metal bolts cover bar;
B, as shown in Figures 2 and 3, according to production engineering specifications, the metal bolts connected by the first connector 4-1 cover 1 and changeover portion 2 are placed in the pipe die 5 of extruding equipment, then the glass fiber yarn designed is arranged in the both sides of extruding equipment in creel 6, glass fiber yarn is directly from both sides creel 6 device in, by two glue grooves that epoxy resin or vinylite are housed of both sides, glass fiber yarn is infiltrated and has resin, then having good positioning, (pipe die 5 locates the pipe die location-plate relied on pipe die location-plate 5-1 and four bracing struts to pipe die 5, pipe die 5 axle center different from mould 10), metal bolts cover bar has the glass fiber yarn of resin to collect by the pipe die 5 of accurate positioning with infiltration, and infiltration has the glass fiber yarn of resin under extruding equipment traction, by multiple yarn dividing plate 9 side by side, pipe die 5 location-plate, bundle yarn plate 12 enters the die cavity of mould 10, and (wherein the design of yarn dividing plate 9 can be uniform according to the content annular of yarn direct in product size, thus ensure the reasonability of fiber distribution in a mold), allow metal bolts overlap bar and be soaked with resin glass fiber yarn in mould 10, pass through pultrusion, be heating and curing shaping, then pre-embedded bolt cover prefabricated section is cut into through cutting machine 11 by dimensional requirement,
Pre-embedded bolt cover prefabricated section and fan blade shaping:
First blade mold is processed, then the glass fabric of a given layer is laid at root according to technological design, root of blade is arranged in by blade production requirement again by pre-embedded bolt cover prefabricated section, and with bolt, pre-embedded bolt is overlapped prefabricated section and be fixed on the locating flange of blade mold root, then on pre-embedded bolt cover prefabricated section, lay the glass fabric of a given layer, lay vacuum film, set up vacuum system filling system, finally pre-embedded bolt is overlapped prefabricated section and blade integral perfusion resin curing molding.After blade integral completes, until when installing root bolt operation, directly construction bolt in metal bolts cover.
The method of the root of fan blade pre-embedded bolt cover that above-described employing pultrude process manufactures, described metal bolts cover 1 adopts 42CrMoA steel alloy to make.
The method of the root of fan blade pre-embedded bolt cover that above-described employing pultrude process manufactures, described glass fiber yarn adopts 1109 strands of direct yarns of 4800TEX.
The method of the root of fan blade pre-embedded bolt cover that above-described employing pultrude process manufactures, configuration heating system in described pipe die 5, can ensure that embedded bolt sleeve just enters in mould 10 after reaching predetermined temperature, thus the problem of solidification that temperature difference can be avoided to cause and product quality problem.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (5)
1. a method for the root of fan blade pre-embedded bolt cover adopting pultrude process to manufacture, is characterized in that comprising the following steps:
The preparation of pre-embedded bolt cover prefabricated section:
A, first get metal bolts cover (1), the first connector (4-1) is first used metal bolts cover (1) and changeover portion (2) to be coupled together, described changeover portion (2) is made up of steel pipe or core, steel duct needs filling with light material (3), then blasting treatment is carried out to metal bolts cover (1) and changeover portion (2) outer surface, increase its surface roughness, then adopt the second connector (4-2) to couple together in several metal bolts covers (1) and obtain metal bolts cover bar;
B, according to production engineering specifications, by the metal bolts cover (1) coupled together with the first connector (4-1) and changeover portion (2) and be placed in the pipe die (5) of extruding equipment by several metal bolts covers (1) that the second connector (4-2) couples together, then the glass fiber yarn designed is arranged in creel (6), then with extruding equipment, glass fiber yarn tractive is passed through collection creel (7), glue groove (8), multiple yarn dividing plate (9) side by side, traction enters mould (10), allow metal bolts overlap bar and be soaked with resin glass fiber yarn in mould (10), pass through pultrusion, be heating and curing shaping, then pre-embedded bolt cover prefabricated section is cut into through cutting machine (11) by dimensional requirement,
Pre-embedded bolt cover prefabricated section and fan blade shaping:
Blade mold root is laid according to technological design the glass fabric of certain number of plies, the above-mentioned pre-embedded bolt cover prefabricated section prepared is arranged on blade mold root, and with bolt, pre-embedded bolt is overlapped prefabricated section and be fixed on the locating flange of blade mold root, then on pre-embedded bolt cover prefabricated section, lay the glass fabric of certain number of plies, lay vacuum film, set up priming by vacuum system, pre-embedded bolt is overlapped prefabricated section and blade integral perfusion resin again, after resin perfusion, heating, resin solidification is shaping.
2. the method that the root of fan blade pre-embedded bolt that employing pultrude process according to claim 1 manufactures overlaps, it is characterized in that, described metal bolts cover (1) adopts 42CrMoA steel alloy to make.
3. the method that the root of fan blade pre-embedded bolt that employing pultrude process according to claim 1 manufactures overlaps, it is characterized in that, described light material (3) is PVC or balsa wood material.
4. the method for the root of fan blade pre-embedded bolt cover that the employing pultrude process according to any one of claims 1 to 3 manufactures, it is characterized in that, described glue groove (8) is built with epoxy resin, vinylite or polyurethane resin material.
5. the method that the root of fan blade pre-embedded bolt that employing pultrude process according to claim 4 manufactures overlaps, it is characterized in that, described glass fiber yarn adopts 1109 strands of direct yarns of 4800TEX.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410172748.XA CN103909662B (en) | 2014-04-28 | 2014-04-28 | A kind of method of the root of fan blade pre-embedded bolt cover adopting pultrude process to manufacture |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410172748.XA CN103909662B (en) | 2014-04-28 | 2014-04-28 | A kind of method of the root of fan blade pre-embedded bolt cover adopting pultrude process to manufacture |
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| CN103909662A CN103909662A (en) | 2014-07-09 |
| CN103909662B true CN103909662B (en) | 2016-01-13 |
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Families Citing this family (6)
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| CN104859160B (en) * | 2015-05-29 | 2018-09-25 | 连云港中复连众复合材料集团有限公司 | It is suitble to the root of fan blade pre-embedded bolt set and preparation method thereof of pultrude process |
| CN105465141B (en) * | 2016-01-05 | 2017-11-21 | 中复碳芯电缆科技有限公司 | A kind of pre-buried blade root fastenings part of pultrusion used for blades of wind driven generator and preparation method thereof |
| US11273611B2 (en) * | 2019-10-07 | 2022-03-15 | GM Global Technology Operations LLC | Reinforced preform and method for molding |
| CN118404836B (en) * | 2024-07-04 | 2024-10-01 | 常州市宏发纵横新材料科技股份有限公司 | Root bolt sleeve component pultrusion mass production preparation method for wind power blade |
| CN118438700B (en) * | 2024-07-08 | 2024-09-20 | 新创碳谷集团有限公司 | Pultrusion processing method for blade root screw sleeve component of wind power blade |
| CN118438699B (en) * | 2024-07-08 | 2024-09-17 | 新创碳谷集团有限公司 | Processing method of blade root structure of wind power blade |
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| EP1486415A1 (en) * | 2003-06-12 | 2004-12-15 | SSP Technology A/S | Wind turbine blade and method of manufacturing a blade root |
| CN101865092B (en) * | 2009-04-14 | 2012-01-11 | 上海艾郎风电科技发展有限公司 | Method for mounting and positioning megawatt wind-power blade root end bolt |
| CN103264510B (en) * | 2013-05-29 | 2015-04-15 | 连云港中复连众复合材料集团有限公司 | Molding method of embedded bolt sleeve at root of fan blade |
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Effective date of registration: 20231129 Address after: 9th Floor, Block C, Building B6, Dongsheng Science and Technology Park, No. 66 Xixiaokou Road, Haidian District, Beijing, 100192 Patentee after: SINOMATECH WIND POWER BLADE Co.,Ltd. Address before: Lianyungang City, Jiangsu province 222006 Lian Hai Road No. 195 Patentee before: LIANYUNGANG ZHONGFU LIANZHONG COMPOSITES GROUP Co.,Ltd. |