CN102635514A - Sectional type blade of large-scale wind power generator set and connecting method for sectional type blade - Google Patents
Sectional type blade of large-scale wind power generator set and connecting method for sectional type blade Download PDFInfo
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- CN102635514A CN102635514A CN2012101353054A CN201210135305A CN102635514A CN 102635514 A CN102635514 A CN 102635514A CN 2012101353054 A CN2012101353054 A CN 2012101353054A CN 201210135305 A CN201210135305 A CN 201210135305A CN 102635514 A CN102635514 A CN 102635514A
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- blade
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- steel bars
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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
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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
- Y02E10/728—Onshore wind turbines
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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
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Abstract
The invention discloses a sectional type blade of a large-scale wind power generator set and a connecting method for the sectional type blade. The blade is designed into two sections, a deformed steel bar is pre-embedded in a blade shell of a joint of each section, part of the length of the deformed steel bar is exposed at the same time, and the deformed steel bars at the joint ends of the two sections of the blade are required to have one-to-one correspondence lap positions; when the blade is sectionally transported to a complete machine mounting site, the two sections of the blade are adjusted to ideal opposite positions by using a fixture, and then the deformed steel bars corresponding to the two sections of the blade are lapped and welded together; and a prefabricated blade inner template and other materials which are the same as a blade base material are used for performing on-site pasting to connect the sectional blade, then the last pneumatic contour of the blade is molded by using a section of blade contour female die, and finally the process steps of curing, dismounting the female die, trimming and painting are finished. The sectional type blade is connected by adoption of a deformed steel bar lapping welded structure, the process is relatively simple, machining parts are not used, the cost is low, the connection strength is high, and the difficulty for processing, manufacturing and transporting over-long blades can be overcome.
Description
Technical field
The present invention relates to large-scale wind electricity unit field, particularly, relate to a kind of large-scale wind electricity unit segmented blade and attaching method thereof.
Background technique
Along with the increase of the horizontal shaft wind-power power of the assembling unit, it is more and more longer that its length of blade will become.The wind-powered electricity generation unit of 6MW comes out at present, and the blower fan of 7MW to 12MW is also in research and development.The length of blade scope of these units will be between 65m-110m.So the blade of length will bring great difficulty to the manufacturing processing and the transportation of blade.For solving these manufacturing of overlength processing of leaves and hard transportation, Blade Design is become segmentation structure, this is undoubtedly a kind of desirable method.Blade can be transported to the erecting bed with the segmentation form, accomplish the butt joint of blade at the scene after, carry out installation again with main frame.This has just solved the difficulty that the overlength processing of leaves is made and transported to a great extent.
Summary of the invention
The objective of the invention is to overcome the shortcoming and defect of above-mentioned existing technology, a kind of large-scale wind electricity unit segmented blade is provided, can solve the difficulty that the overlength processing of leaves is made and transported.
Another object of the present invention is to provide a kind of connecting means of large-scale wind electricity unit segmented blade.
To achieve these goals, the present invention adopts following technological scheme:
A kind of large-scale wind electricity unit segmented blade, blade is processed two sections: blade root section and blade tip section are embedded with Deformed Steel Bars, simultaneously Deformed Steel Bars exposed portions serve length in the blade shell of every section joint; Every section joint area connects through Deformed Steel Bars overlap joint welded structure; And around Deformed Steel Bars overlap joint welded structure, adopt and respectively blade root section and blade tip section are coupled together with the blade identical materials.
Further; In the blade shell of said every section joint; Carry the less and relative rarer Deformed Steel Bars of layout of the regional pre-buried diameter of less blade inlet edge and trailing edge, carry the big and relative closeer Deformed Steel Bars of layout of the bigger pre-buried diameter of blade central region.
Further, than integral blade thicker, the direction that increases thickness is the inboard of blade shell to said segmented blade, and between thicker region and the normal thickness zone smooth transition region is arranged at the thickness of shell of the joint area of imbedding Deformed Steel Bars.
Further, overlap welded regional inboard at said Deformed Steel Bars and be disposed with blade inner formword, inside panel from the inside to the outside; Arranged outside has exterior skin; Deformed Steel Bars overlap joint welded structure outer periphery between inside panel and the exterior skin is equipped with and blade mother metal identical materials; The axial length of said blade inner formword is slightly longer than joint length.
Further, said large-scale wind electricity unit is the horizontal shaft wind-power unit, and blade is a fiberglass blade.
A kind of connecting means of large-scale wind electricity unit segmented blade comprises the steps:
(1) prefabrication segmented blade:
Blade Design is become two sections, in the blade shell of every section joint, be embedded with Deformed Steel Bars, while Deformed Steel Bars exposed portions serve length, the Deformed Steel Bars of two sections blade joint ends need guarantee lap position one to one;
(2) the erecting bed blade connects:
After blade section is transported to the whole machine installation scene, utilize frock that two sections blades are adjusted to desirable relative position, then that two sections blades are corresponding Deformed Steel Bars lap welding is connected together;
(3) the erecting bed blade integral connects moulding:
Utilizing prefabricated blade inner formword and other blade mother metal to carry out the scene pastes; The segmented blade is coupled together; Utilize one section blade profile former to accomplish the moulding of the last aerodynamic configuration of blade again, accomplish at last and solidify, remove former, finishing and painting process.
Further, the method for imbedding of Deformed Steel Bars is in the said step (1): utilize one to be used for carrying out the Deformed Steel Bars location for the mould of Deformed Steel Bars location in every side of joint, and then Deformed Steel Bars is directly imbedded.
Further, the external frame of the joint end of two sections blades is more smaller than the external frame after being shaped in the said step (1), and the profile after in certain length range, carrying out the transition to shaping.
Further, the frock in the said step (2) is three supports, and supported joint end, blade root are held and the blade tip end respectively, in order to the adjustment leaf position.
Further, the axial length of the blade profile former in the said step (3) is slightly longer than joint length.
The present invention is owing to take above technological scheme, and it has the following advantages:
1, the element of the main carrying of the joint of segmented blade of the present invention is a Deformed Steel Bars overlap joint welded structure, and intensity is high, and cost is low, and easy construction can solve the difficulty that the overlength processing of leaves is made and transported.
2, an end of Deformed Steel Bars imbed blade shell in because the Deformed Steel Bars surface has the groove of screw thread-like, need not to use special bolt, nut just can combine securely with the blade mother metal.
3, the mother metal of blade need not the boring of imbedding for Deformed Steel Bars.Each joint end only need have a simple jig can realize the location of Deformed Steel Bars, Deformed Steel Bars is imbedded to get final product then.
4, the factory of the contained blade tip of the present invention make and on-the-spot butt joint technology all relatively simple, no machined piece, cost is low, but connects reliably.
Through accompanying drawing and embodiment, technological scheme of the present invention is done further detailed description below.
Description of drawings
Fig. 1 is the basic view of joint of large-scale wind electricity unit segmented blade of the present invention;
Fig. 2 is the A-A sectional drawing among Fig. 1;
Fig. 3 is the I place partial enlarged drawing among Fig. 2;
Fig. 4 is the B-B sectional drawing among Fig. 3.
Embodiment
Below in conjunction with accompanying drawing the preferred embodiments of the present invention are described.Should be appreciated that preferred embodiment described herein only is used for explanation and explains the present invention, and be not used in qualification the present invention.
A kind of large-scale wind electricity unit segmented blade of the present invention, blade is processed two sections: two sections of blade root section and blade tip sections, like Fig. 1-shown in Figure 4.In the blade shell of the joint of blade tip section, be embedded with one group of Deformed Steel Bars 1a, in the blade shell of the joint of blade root section, be embedded with one group of Deformed Steel Bars 1b, simultaneously Deformed Steel Bars 1a, 1b exposed portions serve length; Every section joint area connects through Deformed Steel Bars 1a, 1b overlap joint welded structure, and weld seam is 2; Deformed Steel Bars 1a, 1b overlap welded regional inboard and are disposed with blade inner formword 3, inside panel 4 from the inside to the outside; Arranged outside has exterior skin 5; Deformed Steel Bars overlap joint welded structure outer periphery between inside panel 4 and the exterior skin 5 is equipped with and blade mother metal identical materials 6.
Wherein the large-scale wind electricity unit is the horizontal shaft wind-power unit, and blade is a fiberglass blade.
The connecting means of a kind of large-scale wind electricity unit segmented blade of the present invention comprises the steps:
(1) prefabrication segmented blade:
Blade Design is become two sections, in the blade shell of every section joint, be embedded with Deformed Steel Bars, while Deformed Steel Bars exposed portions serve length, the Deformed Steel Bars of two sections blade joint ends need guarantee lap position (being close to side by side in twos) one to one;
(2) the erecting bed blade connects:
After blade section is transported to the whole machine installation scene, utilize frock that two sections blades are adjusted to desirable relative position, then that two sections blades are corresponding Deformed Steel Bars lap welding is connected together;
(3) the erecting bed blade integral connects moulding:
Utilizing prefabricated blade inner formword and other blade mother metal to carry out the scene pastes; The segmented blade is coupled together; Utilize one section blade profile former to accomplish the moulding of the last aerodynamic configuration of blade again, accomplish at last and solidify, remove former, finishing and painting process.
To note aspect the concrete design and processes of joint following some:
1, confirms diameter, quantity and the arrangement of all Deformed Steel Barss in the joint according to the suffered various maximum loads of blade joint position blade, also need butt joint to carry out the check of fatigue strength simultaneously.As, the big and relative closeer Deformed Steel Bars of layout of diameter can be imbedded in the main bearing area in the middle part of blade shell, at leading edge and the less less and relative rarer Deformed Steel Bars of layout of regional available diameter of trailing edge equivalent-load.(shown in Fig. 1-3)
2, Deformed Steel Bars should have enough lengths of embedment, to guarantee the blade glass fibre reinforced plastics body portion of imbedding side enough intensity is arranged.The exposed portions serve of Deformed Steel Bars has enough length, to guarantee enough fusion lengths, guarantees weld strength.
3, blade should be thicker than integral blade thickness outline at the thickness of shell in the zone of imbedding Deformed Steel Bars, and the thickening direction is a side direction in the blade shell.Between thicker region normal thickness zone, a smooth transition region should be arranged, to guarantee the intensity of blade mother metal.
4, when Deformed Steel Bars is imbedded operation, every side of joint can be utilized a mould that is used for to Deformed Steel Bars location, can guarantee the accurate position of Deformed Steel Bars easily, to guarantee smooth welding.
5, the external frame 7 of the prefabricated joint end of two sections blades should be slightly smaller than the external frame after being shaped, and the profile after in certain length range, carrying out the transition to shaping, so that strengthen the adhesive strength (as shown in Figure 4) of the exterior skin of joint.
6, use a prefabricated fiberglass blade inner formword at the scene during operation, its axial length is slightly longer than joint length, with convenient working.The former that one section blade profile should be arranged at the scene, its axial length is slightly longer than joint length, with the aerodynamic configuration of joint area behind the assurance field operation.
7, three supports supported joint end, blade root end and blade tip end respectively should be arranged at the scene,, guarantee the accurate profile after blade connects in order to the adjustment leaf position.
What should explain at last is: the above is merely the preferred embodiments of the present invention; Be not limited to the present invention; Although the present invention has been carried out detailed explanation with reference to previous embodiment; For a person skilled in the art, it still can be made amendment to the technological scheme that previous embodiment is put down in writing, and perhaps part technical characteristics wherein is equal to replacement.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. large-scale wind electricity unit segmented blade is characterized in that blade is processed two sections: blade root section and blade tip section are embedded with Deformed Steel Bars, simultaneously Deformed Steel Bars exposed portions serve length in the blade shell of every section joint; Every section joint area connects through Deformed Steel Bars overlap joint welded structure;
And around Deformed Steel Bars overlap joint welded structure, adopt and respectively blade root section and blade tip section are coupled together with the blade identical materials.
2. large-scale wind electricity unit segmented blade according to claim 1; It is characterized in that; In the blade shell of said every section joint; Carry the less and relative rarer Deformed Steel Bars of layout of the regional pre-buried diameter of less blade inlet edge and trailing edge, carry the big and relative closeer Deformed Steel Bars of layout of the bigger pre-buried diameter of blade central region.
3. large-scale wind electricity unit segmented blade according to claim 1; It is characterized in that; Said segmented blade at the thickness of shell of the joint area of imbedding Deformed Steel Bars than integral blade thicker; The direction that increases thickness is the inboard of blade shell, and between thicker region and the normal thickness zone smooth transition region is arranged.
4. large-scale wind electricity unit segmented blade according to claim 1 is characterized in that, overlaps welded regional inboard at said Deformed Steel Bars and is disposed with blade inner formword, inside panel from the inside to the outside; Arranged outside has exterior skin; Deformed Steel Bars overlap joint welded structure outer periphery between inside panel and the exterior skin is equipped with and blade mother metal identical materials; The axial length of said blade inner formword is slightly longer than joint length.
5. according to each described large-scale wind electricity unit segmented blade of claim 1-4, it is characterized in that said large-scale wind electricity unit is the horizontal shaft wind-power unit, blade is a fiberglass blade.
6. the connecting means of a large-scale wind electricity unit segmented blade is characterized in that, comprises the steps:
(1) prefabrication segmented blade:
Blade Design is become two sections, in the blade shell of every section joint, be embedded with Deformed Steel Bars, while Deformed Steel Bars exposed portions serve length, the Deformed Steel Bars of two sections blade joint ends need guarantee lap position one to one;
(2) the erecting bed blade connects:
After blade section is transported to the whole machine installation scene, utilize frock that two sections blades are adjusted to desirable relative position, then that two sections blades are corresponding Deformed Steel Bars lap welding is connected together;
(3) the erecting bed blade integral connects moulding:
Utilizing prefabricated blade inner formword and other blade mother metal to carry out the scene pastes; The segmented blade is coupled together; Utilize one section blade profile former to accomplish the moulding of the last aerodynamic configuration of blade again, accomplish at last and solidify, remove former, finishing and painting process.
7. the connecting means of large-scale wind electricity unit segmented blade according to claim 6; It is characterized in that; The method of imbedding of Deformed Steel Bars is in the said step (1): utilize one to be used for carrying out the Deformed Steel Bars location for the mould of Deformed Steel Bars location in every side of joint, and then Deformed Steel Bars is directly imbedded.
8. the connecting means of large-scale wind electricity unit segmented blade according to claim 6; It is characterized in that; The external frame of the joint end of two sections blades is more smaller than the external frame after being shaped in the said step (1), and the profile after in certain length range, carrying out the transition to shaping.
9. the connecting means of large-scale wind electricity unit segmented blade according to claim 6 is characterized in that, the frock in the said step (2) is three supports, and supported joint end, blade root are held and the blade tip end respectively, in order to the adjustment leaf position.
10. the connecting means of large-scale wind electricity unit segmented blade according to claim 6 is characterized in that, the axial length of the blade profile former in the said step (3) is slightly longer than joint length.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101353054A CN102635514A (en) | 2012-05-02 | 2012-05-02 | Sectional type blade of large-scale wind power generator set and connecting method for sectional type blade |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101353054A CN102635514A (en) | 2012-05-02 | 2012-05-02 | Sectional type blade of large-scale wind power generator set and connecting method for sectional type blade |
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| CN102635514A true CN102635514A (en) | 2012-08-15 |
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| CN2012101353054A Pending CN102635514A (en) | 2012-05-02 | 2012-05-02 | Sectional type blade of large-scale wind power generator set and connecting method for sectional type blade |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102886840A (en) * | 2012-09-25 | 2013-01-23 | 内蒙古航天亿久科技发展有限责任公司 | Die for manufacturing blades with multiple sizes for wind driven generator |
| CN111791400A (en) * | 2020-04-30 | 2020-10-20 | 株洲时代新材料科技股份有限公司 | Wind power blade mold segmentation compatible design method |
Citations (5)
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| CN1977108A (en) * | 2004-06-30 | 2007-06-06 | 维斯塔斯风力系统有限公司 | Wind turbine blades made of two separate sections, and method of assembly |
| US20100143148A1 (en) * | 2008-12-12 | 2010-06-10 | General Electric Company | Turbine blade and method of fabricating the same |
| US20110088331A1 (en) * | 2006-01-17 | 2011-04-21 | Borge Olgaard | Wind Turbine Tower, A Wind Turbine, A Wind Turbine Tower Elevator And A Method For Assembling A Wind Turbine Tower |
| CN102192110A (en) * | 2011-06-12 | 2011-09-21 | 中国科学院工程热物理研究所 | Subsection blade of wind turbine and assembling method thereof |
| CN202545141U (en) * | 2012-05-02 | 2012-11-21 | 国电联合动力技术有限公司 | Sectional blade for large wind generator unit |
-
2012
- 2012-05-02 CN CN2012101353054A patent/CN102635514A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1977108A (en) * | 2004-06-30 | 2007-06-06 | 维斯塔斯风力系统有限公司 | Wind turbine blades made of two separate sections, and method of assembly |
| US20110088331A1 (en) * | 2006-01-17 | 2011-04-21 | Borge Olgaard | Wind Turbine Tower, A Wind Turbine, A Wind Turbine Tower Elevator And A Method For Assembling A Wind Turbine Tower |
| US20100143148A1 (en) * | 2008-12-12 | 2010-06-10 | General Electric Company | Turbine blade and method of fabricating the same |
| CN102192110A (en) * | 2011-06-12 | 2011-09-21 | 中国科学院工程热物理研究所 | Subsection blade of wind turbine and assembling method thereof |
| CN202545141U (en) * | 2012-05-02 | 2012-11-21 | 国电联合动力技术有限公司 | Sectional blade for large wind generator unit |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102886840A (en) * | 2012-09-25 | 2013-01-23 | 内蒙古航天亿久科技发展有限责任公司 | Die for manufacturing blades with multiple sizes for wind driven generator |
| CN111791400A (en) * | 2020-04-30 | 2020-10-20 | 株洲时代新材料科技股份有限公司 | Wind power blade mold segmentation compatible design method |
| CN111791400B (en) * | 2020-04-30 | 2022-04-26 | 株洲时代新材料科技股份有限公司 | Wind power blade mold segmentation compatible design method |
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Application publication date: 20120815 |