CN103061995A - Pre-buried screw processing method for blade roots of Megawatt-level wind turbine generator set - Google Patents
Pre-buried screw processing method for blade roots of Megawatt-level wind turbine generator set Download PDFInfo
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- CN103061995A CN103061995A CN2013100239963A CN201310023996A CN103061995A CN 103061995 A CN103061995 A CN 103061995A CN 2013100239963 A CN2013100239963 A CN 2013100239963A CN 201310023996 A CN201310023996 A CN 201310023996A CN 103061995 A CN103061995 A CN 103061995A
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- 238000003672 processing method Methods 0.000 title abstract 2
- 238000000034 method Methods 0.000 claims abstract description 31
- 239000004744 fabric Substances 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 8
- 239000003365 glass fiber Substances 0.000 claims description 6
- 239000006260 foam Substances 0.000 claims description 4
- 238000004804 winding Methods 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000000149 penetrating effect Effects 0.000 abstract 4
- 229920000915 polyvinyl chloride Polymers 0.000 abstract 4
- 239000004800 polyvinyl chloride Substances 0.000 abstract 4
- 230000005611 electricity Effects 0.000 description 7
- 239000008358 core component Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000037452 priming Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000010327 methods by industry Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000009755 vacuum infusion Methods 0.000 description 1
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
The invention provides a method for pre-buried screw processing method for blade roots of Megawatt-level wind turbine generator set. The method includes the steps of aligning the center of each flange hole of a blade root flange plate to corresponding center of each hole of a flange die; penetrating pre-buried screws into the flange holes of the blade root flange plate and fixing the pre-buried screws with nuts; nesting the pre-buried screws with UD sleeves; penetrating bolt sleeves into the UD sleeves; penetrating the pre-buried screws into the bolt sleeves to be tightened; penetrating threaded ends of the bolt sleeves into PVC (Poly Vinyl Chloride) wedges ; clamping the PVC chocks on the lateral sides of the UC sleeves and compacting the UD sleeves and the PVC chocks; and placing UD sticks in the inner sides of the US sleeves, filling the UD sticks between neighboring bolt sleeves, pounding the US sticks tight, and filling clearances among the UC sleeves, the UD sticks and the bolt sleeves with the UD sticks. By the aid of the method, technological process is shortened, rate of finished products is increased, working position is reduced, and production efficiency is improved; and further wind turbine generator set the pre-buried screws and the wind turbine generator set are combined tightly.
Description
Technical field
The present invention relates to a kind of wind electricity blade and make the field, relate in particular to a kind of megawatt wind-power blade blade root screw pre-buried technological method.
Background technique
Wind electricity blade is as the core component of unit, blade technology is one of core technology of wind-power generating system, the quality of its performance directly affects wind energy efficiency and the suffered load of unit of wind-powered electricity generation unit, has determined to a great extent the overall performance of unit and the Economy that Wind Power Generation utilizes.Simultaneously, blade also is the core component of blower fan, and its cost is about 23% of wind-powered electricity generation unit overall cost.
Existing blade process engineering adopts vacuum infusion molding usually, follow-uply need to cut, punch blade root.This is so that blade technique in forming process is numerous and diverse, and blade root cutting, punch operation be difficult control relatively.How providing a kind of easily technological method to make megawatt wind-power blade is the problem that the technician will solve.
Summary of the invention
The present invention proposes a kind of megawatt wind-power blade blade root screw pre-buried technological method, and it can overcome deficiency of the prior art effectively.
Technological scheme of the present invention is achieved in that a kind of megawatt wind-power blade blade root screw pre-buried technological method, and the method may further comprise the steps:
(1) the blade root flange plate is installed: with each flange hole center and each hole center-aligned of mould flange of blade root flange plate;
(2) pre embedded bolt and nut are installed: in the flange hole of blade root flange plate, penetrate the pre embedded bolt of respective numbers, and be fixed with nut;
(3) UD is enclosed within on the pre embedded bolt;
(4) bolt sleeve is penetrated in the UD cover, bolt sleeve needs to place perpendicular to the blade root flange plate;
(5) tighten after pre embedded bolt is penetrated bolt sleeve away from an end of nut, make the threaded end of pre embedded bolt and bolt sleeve form fixing;
(6) threaded end with bolt sleeve penetrates in the PVC chock;
(7) PVC chock card is placed on the outside that UD is with, and with UD band and the compacting of PVC chock;
(8) put into the UD rod in the inboard of UD band, the UD rod is filled between the adjacent bolt sleeve, and hits tight with hammer, the UD band fills up with the UD silk with the gap of UD rod and bolt sleeve.
As preferably, in step (6), before bolt sleeve is penetrated the PVC chock, be screwed into bolt with this end-enclosed at the threaded end of bolt sleeve, then bolt penetrates in the PVC chock with the threaded end of bolt sleeve, forms fixing with the PVC chock.
As preferably, described blade root flange plate internal diameter is 1.697 meters, and external diameter is 1.886 meters, 27 flange holes altogether on the flange plate, and the flange hole center is to the flange distance of center circle from being 0.9 meter, and the radian between the flange hole is 6.67 °.
As preferably, in step (1), take the 14th flange hole center of blade root flange plate as basic point, with each flange hole center and each hole center-aligned of mould flange of blade root flange plate.
As preferably, the material of UD cover is 0 ° of glass-fiber-fabric.
As preferably, the outer surface of pre embedded bolt is wound with glass fibre.
As preferably, the two ends of pre embedded bolt are thread section, and its thread size is M30 * 3.5, and glass fiber winding is on non-threaded section of pre embedded bolt.
As preferably, the material of PVC chock is the PVC foam, and the gradient of PVC chock is 1:7.
Beneficial effect of the present invention is: 1. adopt this technological method, can avoid also needing to carry out the operation of blade root cutting and boring after the blade demoulding, shortened technological process, improved yield rate, reduced station, improved manufacturing efficiency.2. pre embedded bolt is combined tightr with wind generator set blade.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technological scheme of the prior art, the accompanying drawing of required use was done to introduce simply during the below will describe embodiment, apparently, accompanying drawing in the following describes only is one of them embodiment of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is used in schematic representation behind the wind-powered blade mold for this technological method;
Fig. 2 is the structural representation of blade root flange plate;
Fig. 3 is the sectional view of A-A among Fig. 1;
Fig. 4 is the pre embedded bolt structural representation;
Fig. 5 is the structural representation of bolt sleeve;
Fig. 6 is the sectional view of Fig. 4;
Fig. 7 is the structural representation of PVC chock.
Among the figure: 1, blade root laying a; 2, half UD rod; 3, UD rod; 4, UD band; 5, PVC chock; 6, bolt; 7, bolt sleeve; 8, UD cover; 9, pre embedded bolt; 10, blade root flange plate; 11, nut; 12, blade root laying b; 13, housing mould.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technological scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is one of them embodiment of the present invention, rather than whole embodiments.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment who obtains under the creative work prerequisite.
A kind of megawatt wind-power blade blade root screw pre-buried technological method, the method may further comprise the steps:
(1) the blade root flange plate is installed: with each flange hole center and each hole center-aligned of mould flange of blade root flange plate;
(2) pre embedded bolt and nut are installed: in the flange hole of blade root flange plate, penetrate the pre embedded bolt of respective numbers, and be fixed with nut;
(3) UD cover (single shaft is to the cloth cover) is enclosed within on the pre embedded bolt;
(4) bolt sleeve is penetrated in the UD cover, bolt sleeve needs to place perpendicular to the blade root flange plate;
(5) tighten after pre embedded bolt is penetrated bolt sleeve away from an end of nut, make the threaded end of pre embedded bolt and bolt sleeve form fixing;
(6) threaded end at bolt sleeve is screwed into bolt with this end-enclosed, and then the threaded end with bolt sleeve penetrates in the PVC chock, and bolt penetrates in the PVC chock with the threaded end of bolt sleeve, forms fixing with the PVC chock;
(7) PVC chock card is placed on the outside that UD is with (single shaft is to strap), and with UD band and the compacting of PVC chock;
(8) put into UD rod (single shaft is to the cloth rod) in the inboard of UD band, the UD rod is filled between the adjacent bolt sleeve, and hits tight with hammer, the UD band fills up with the UD silk with the gap of UD rod and bolt sleeve.
As preferably, described blade root flange plate internal diameter is 1.697 meters, and external diameter is 1.886 meters, 27 flange holes altogether on the flange plate, and the flange hole center is to the flange distance of center circle from being 0.9 meter, and the radian between the flange hole is 6.67 °.
As preferably, in step (1), take the 14th flange hole center of blade root flange plate as basic point, with each flange hole center and each hole center-aligned of mould flange of blade root flange plate.
As preferably, the material of UD cover is 0 ° of glass-fiber-fabric.
As preferably, the length of pre embedded bolt is made by customer requirement, and the two ends of pre embedded bolt are thread section, and its thread size is M30 * 3.5, and glass fiber winding is on non-threaded section of pre embedded bolt.
As preferably, the material of PVC chock is the PVC foam, and the gradient of PVC chock is 1:7.
Referring to Fig. 1 to Fig. 7, using method of the present invention may further comprise the steps:
(1) the blade root flange plate is installed: as shown in Figure 2, described blade root flange plate internal diameter is 1.697 meters, external diameter is 1.886 meters, have 27 flange holes on the flange plate altogether, the concrete size of flange hole as shown in Figure 3, the flange hole center is to the flange distance of center circle from being 0.9 meter, radian between the flange hole is 6.67 °, take the 14th flange hole center of blade root flange plate as basic point, with each flange hole center and each hole center-aligned of mould flange of blade root flange plate, during installation, should guarantee that the blade root flange plate is close to mould blade root place, do not stay the slit, in order to avoid in the priming by vacuum process, leak gas;
(2) lay blade root laying b at the lower surface of wind electricity blade blade root, blade root laying b adopts twin shaft to glass-fiber-fabric (800g/m
2± 45);
(3) pre embedded bolt and nut are installed: the pre embedded bolt that in the flange hole of blade root flange plate, penetrates respective numbers, and be fixed with nut, the concrete size of pre embedded bolt as shown in Figure 4, the total length Y of pre embedded bolt makes by customer requirement, the two ends of pre embedded bolt are thread section, its thread size is M30 * 3.5, and glass fiber winding is on non-threaded section of pre embedded bolt;
(4) UD is enclosed within on the pre embedded bolt, the material of UD cover is 0 ° of glass-fiber-fabric;
(5) bolt sleeve (specification of bolt sleeve is M30) is penetrated in the UD cover, bolt sleeve needs to place perpendicular to the blade root flange plate;
(6) tighten after pre embedded bolt is penetrated bolt sleeve away from an end of nut, make the threaded end of pre embedded bolt and bolt sleeve form fixing;
(7) threaded end at bolt sleeve is screwed into bolt (specification of bolt is M30) with this end-enclosed, then the threaded end with bolt sleeve penetrates in the PVC chock, bolt penetrates in the PVC chock with the threaded end of bolt sleeve, form fixing with the PVC chock, the material of PVC chock is the PVC foam, and the gradient of PVC chock is 1:7;
(8) PVC chock card is placed on the outside that UD is with, and with UD band and the compacting of PVC chock;
(9) put into the UD rod in the inboard of UD band, the UD rod is filled between the adjacent bolt sleeve puts into, and hit tight with hammer, the UD band fills up with the UD silk with the gap of UD rod and bolt sleeve;
(10) lay blade root laying a at the upper surface of wind electricity blade blade root, blade root laying a adopts twin shaft to glass-fiber-fabric (800g/m
2± 45 °).
(11) lay the priming by vacuum system, with the wind electricity blade form.
1. adopt this technological method, can avoid after the blade demoulding, also needing to carry out the operation of blade root cutting and boring, shortened technological process, improved yield rate, reduced station, improved manufacturing efficiency.2. pre embedded bolt is combined tightr with wind generator set blade.
The above only is preferred embodiment of the present invention, and is in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. megawatt wind-power blade blade root screw pre-buried technological method, it is characterized in that: the method may further comprise the steps:
(1) the blade root flange plate is installed: with each flange hole center and each hole center-aligned of mould flange of blade root flange plate;
(2) pre embedded bolt and nut are installed: in the flange hole of blade root flange plate, penetrate the pre embedded bolt of respective numbers, and be fixed with nut;
(3) UD is enclosed within on the pre embedded bolt;
(4) bolt sleeve is penetrated in the UD cover, bolt sleeve needs to place perpendicular to the blade root flange plate;
(5) tighten after pre embedded bolt is penetrated bolt sleeve away from an end of nut, make the threaded end of pre embedded bolt and bolt sleeve form fixing;
(6) threaded end with bolt sleeve penetrates in the PVC chock;
(7) PVC chock card is placed on the outside that UD is with, and with UD band and the compacting of PVC chock;
(8) put into the UD rod in the inboard of UD band, the UD rod is filled between the adjacent bolt sleeve, and hits tight with hammer, the UD band fills up with the UD silk with the gap of UD rod and bolt sleeve.
2. megawatt wind-power blade blade root screw pre-buried technological method according to claim 1, it is characterized in that: in step (6), before bolt sleeve is penetrated the PVC chock, threaded end at bolt sleeve is screwed into bolt with this end-enclosed, then bolt penetrates in the PVC chock with the threaded end of bolt sleeve, forms fixing with the PVC chock.
3. megawatt wind-power blade blade root screw pre-buried technological method according to claim 2, it is characterized in that: described blade root flange plate internal diameter is 1.697 meters, external diameter is 1.886 meters, have 27 flange holes on the flange plate altogether, the flange hole center is to the flange distance of center circle from being 0.9 meter, and the radian between the flange hole is 6.67 °.
4. megawatt wind-power blade blade root screw pre-buried technological method according to claim 3, it is characterized in that: in step (1), take the 14th flange hole center of blade root flange plate as basic point, with each flange hole center and each hole center-aligned of mould flange of blade root flange plate.
5. the described megawatt wind-power blade blade root of any one screw pre-buried technological method in 4 according to claim 1, it is characterized in that: the material of UD cover is 0 ° of glass-fiber-fabric.
6. the described megawatt wind-power blade blade root of any one screw pre-buried technological method in 4 according to claim 1, it is characterized in that: the outer surface of pre embedded bolt is wound with glass fibre.
7. the described megawatt wind-power blade blade root of any one screw pre-buried technological method in 4 according to claim 1, it is characterized in that: the two ends of pre embedded bolt are thread section, its thread size is M30 * 3.5, and glass fiber winding is on non-threaded section of pre embedded bolt.
8. the described megawatt wind-power blade blade root of any one screw pre-buried technological method in 4 according to claim 1, it is characterized in that: the material of PVC chock is the PVC foam, the gradient of PVC chock is 1:7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310023996.3A CN103061995B (en) | 2013-01-22 | 2013-01-22 | Pre-buried screw processing method for blade roots of Megawatt-level wind turbine generator set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310023996.3A CN103061995B (en) | 2013-01-22 | 2013-01-22 | Pre-buried screw processing method for blade roots of Megawatt-level wind turbine generator set |
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| Publication Number | Publication Date |
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| CN103061995A true CN103061995A (en) | 2013-04-24 |
| CN103061995B CN103061995B (en) | 2015-06-03 |
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| CN201310023996.3A Active CN103061995B (en) | 2013-01-22 | 2013-01-22 | Pre-buried screw processing method for blade roots of Megawatt-level wind turbine generator set |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103344463A (en) * | 2013-05-22 | 2013-10-09 | 国电联合动力技术有限公司 | Blade embedded test piece of blower fan and manufacturing method thereof |
| CN104444578A (en) * | 2014-10-23 | 2015-03-25 | 中材科技风电叶片股份有限公司 | Automatic multi-axis yarn winding machine and closed-loop control yarn winding method adopted through automatic multi-axis yarn winding machine |
| CN106368894A (en) * | 2015-07-22 | 2017-02-01 | 通用电气公司 | Rotor blade root assembly for wind turbine |
| CN106484950A (en) * | 2016-09-14 | 2017-03-08 | 吉林重通成飞新材料股份公司 | Megawatt wind-power blade pre-embedded bolt Analysis of Nested Design method |
| CN106738500A (en) * | 2016-12-01 | 2017-05-31 | 株洲时代新材料科技股份有限公司 | A kind of installation detection method of wind-powered blade mold pre-embedded bolt flange frock |
| CN106762462A (en) * | 2016-12-29 | 2017-05-31 | 北京金风科创风电设备有限公司 | Bolt sleeve connecting piece, wind driven generator blade, manufacturing method and wind driven generator |
| CN107654334A (en) * | 2016-10-26 | 2018-02-02 | 中材科技风电叶片股份有限公司 | Root structure and its manufacture method, the wind electricity blade of wind electricity blade |
| US10046515B1 (en) | 2017-03-30 | 2018-08-14 | General Electric Company | Method of forming wind turbine rotor blade root portions |
| US10060411B2 (en) | 2015-07-22 | 2018-08-28 | General Electric Company | Rotor blade root assembly for a wind turbine |
| CN109296507A (en) * | 2018-10-15 | 2019-02-01 | 株洲时代新材料科技股份有限公司 | A kind of pre-buried connection structure of wind-powered electricity generation composite material blade blade root and wind power plant |
| CN109383049A (en) * | 2018-11-23 | 2019-02-26 | 明阳智慧能源集团股份公司 | Wind electricity blade built-in turnbuckle test block and the test authentication method realized using it |
| CN109648894A (en) * | 2018-12-28 | 2019-04-19 | 连云港中复连众复合材料集团有限公司 | A kind of production method of the wind blade root prefabricated component of the set containing pre-embedded bolt |
| CN111619043A (en) * | 2020-06-15 | 2020-09-04 | 三一重能有限公司 | Preparation mold and preparation method for blade root of fan blade and blade root of fan blade |
| US11167507B2 (en) | 2018-03-16 | 2021-11-09 | General Electric Company | Method for manufacturing a wind turbine rotor blade root assembly |
| CN113733607A (en) * | 2021-09-24 | 2021-12-03 | 吉林重通成飞新材料股份公司 | Preparation method of wind power blade |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103344463A (en) * | 2013-05-22 | 2013-10-09 | 国电联合动力技术有限公司 | Blade embedded test piece of blower fan and manufacturing method thereof |
| CN104444578A (en) * | 2014-10-23 | 2015-03-25 | 中材科技风电叶片股份有限公司 | Automatic multi-axis yarn winding machine and closed-loop control yarn winding method adopted through automatic multi-axis yarn winding machine |
| CN106368894B (en) * | 2015-07-22 | 2020-05-12 | 通用电气公司 | Rotor blade root assembly for a wind turbine |
| CN106368894A (en) * | 2015-07-22 | 2017-02-01 | 通用电气公司 | Rotor blade root assembly for wind turbine |
| US10060411B2 (en) | 2015-07-22 | 2018-08-28 | General Electric Company | Rotor blade root assembly for a wind turbine |
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| CN106484950A (en) * | 2016-09-14 | 2017-03-08 | 吉林重通成飞新材料股份公司 | Megawatt wind-power blade pre-embedded bolt Analysis of Nested Design method |
| CN106484950B (en) * | 2016-09-14 | 2019-07-09 | 吉林重通成飞新材料股份公司 | Megawatt wind-power blade pre-embedded bolt Analysis of Nested Design method |
| CN107654334A (en) * | 2016-10-26 | 2018-02-02 | 中材科技风电叶片股份有限公司 | Root structure and its manufacture method, the wind electricity blade of wind electricity blade |
| CN107654334B (en) * | 2016-10-26 | 2023-11-07 | 中材科技风电叶片股份有限公司 | Root structure of wind power blade, manufacturing method of root structure and wind power blade |
| CN106738500A (en) * | 2016-12-01 | 2017-05-31 | 株洲时代新材料科技股份有限公司 | A kind of installation detection method of wind-powered blade mold pre-embedded bolt flange frock |
| CN106762462A (en) * | 2016-12-29 | 2017-05-31 | 北京金风科创风电设备有限公司 | Bolt sleeve connecting piece, wind driven generator blade, manufacturing method and wind driven generator |
| KR102065865B1 (en) | 2016-12-29 | 2020-01-13 | 베이징 골드윈드 싸이언스 앤 크리에이션 윈드파워 이큅먼트 코.,엘티디. | Bolt sleeve connector, blade and bolt sleeve connector, blade manufacturing method, and wind turbine generator system |
| US11339761B2 (en) | 2016-12-29 | 2022-05-24 | Beijing Goldwind Science & Creation Windpower Equipment Co., Ltd. | Bolt sleeve connector, blade and manufacturing method thereof and wind turbine generator system |
| KR20180090792A (en) * | 2016-12-29 | 2018-08-13 | 베이징 골드윈드 싸이언스 앤 크리에이션 윈드파워 이큅먼트 코.,엘티디. | Bolt sleeve connector, blade and bolt sleeve connector, method of manufacturing blades, and wind turbine generator system |
| CN106762462B (en) * | 2016-12-29 | 2018-04-24 | 北京金风科创风电设备有限公司 | Bolt sleeve connecting piece, blade manufacturing method and wind generating set |
| WO2018120677A1 (en) * | 2016-12-29 | 2018-07-05 | 北京金风科创风电设备有限公司 | Bolt sleeve connector, blade and manufacturing method of blade, and wind turbine set |
| US10046515B1 (en) | 2017-03-30 | 2018-08-14 | General Electric Company | Method of forming wind turbine rotor blade root portions |
| US11167507B2 (en) | 2018-03-16 | 2021-11-09 | General Electric Company | Method for manufacturing a wind turbine rotor blade root assembly |
| CN109296507A (en) * | 2018-10-15 | 2019-02-01 | 株洲时代新材料科技股份有限公司 | A kind of pre-buried connection structure of wind-powered electricity generation composite material blade blade root and wind power plant |
| CN109383049A (en) * | 2018-11-23 | 2019-02-26 | 明阳智慧能源集团股份公司 | Wind electricity blade built-in turnbuckle test block and the test authentication method realized using it |
| CN109383049B (en) * | 2018-11-23 | 2023-09-22 | 明阳智慧能源集团股份公司 | Wind power blade embedded screw sleeve test piece and test authentication method realized by using same |
| CN109648894A (en) * | 2018-12-28 | 2019-04-19 | 连云港中复连众复合材料集团有限公司 | A kind of production method of the wind blade root prefabricated component of the set containing pre-embedded bolt |
| CN111619043A (en) * | 2020-06-15 | 2020-09-04 | 三一重能有限公司 | Preparation mold and preparation method for blade root of fan blade and blade root of fan blade |
| CN113733607B (en) * | 2021-09-24 | 2022-09-09 | 吉林重通成飞新材料股份公司 | Preparation method of wind power blade |
| CN113733607A (en) * | 2021-09-24 | 2021-12-03 | 吉林重通成飞新材料股份公司 | Preparation method of wind power blade |
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