CN202545141U - Sectional blade for large wind generator unit - Google Patents
Sectional blade for large wind generator unit Download PDFInfo
- Publication number
- CN202545141U CN202545141U CN2012201962715U CN201220196271U CN202545141U CN 202545141 U CN202545141 U CN 202545141U CN 2012201962715 U CN2012201962715 U CN 2012201962715U CN 201220196271 U CN201220196271 U CN 201220196271U CN 202545141 U CN202545141 U CN 202545141U
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- Prior art keywords
- blade
- steel bars
- deformed steel
- joint
- section
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- Expired - Lifetime
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 42
- 239000010959 steel Substances 0.000 claims abstract description 42
- 239000000463 material Substances 0.000 claims abstract description 6
- 230000005611 electricity Effects 0.000 claims description 17
- 239000002184 metal Substances 0.000 claims description 6
- 230000004323 axial length Effects 0.000 claims description 4
- 239000011152 fibreglass Substances 0.000 claims description 4
- 230000007704 transition Effects 0.000 claims description 4
- 238000012545 processing Methods 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000010276 construction Methods 0.000 abstract description 2
- 238000013461 design Methods 0.000 description 3
- 210000001503 joint Anatomy 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 230000011218 segmentation Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229920002430 Fibre-reinforced plastic Polymers 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007730 finishing process Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007591 painting process Methods 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
Images
Classifications
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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
-
- 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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- Wind Motors (AREA)
Abstract
本实用新型公开了一种大型风电机组分段式叶片，叶片制成两段：叶根段与叶尖段，在每段的接头的叶片壳体中预埋有螺纹钢，同时螺纹钢露出部分长度；每段的接头部位通过螺纹钢搭接焊接结构连接；且在螺纹钢搭接焊接结构周围采用与叶片相同的材料分别将叶根段与叶尖段连接起来。本实用新型的分段式叶片，其接头的主要承载元件为螺纹钢搭接焊接结构，强度高，且成本低，施工方便，可解决超长叶片的加工制造和运输的困难。
The utility model discloses a segmented blade of a large-scale wind generator group. The blade is made into two sections: a blade root section and a blade tip section, and threaded steel is pre-embedded in the blade shell of the joint of each section, and the exposed part of the threaded steel is at the same time. Length; the joints of each section are connected by a rebar lap welded structure; and the same material as the blade is used around the rebar lap welded structure to connect the blade root section and the blade tip section respectively. The segmented blade of the utility model, the main load-carrying element of the joint is a threaded steel lap welded structure, which has high strength, low cost, convenient construction, and can solve the difficulties of processing, manufacturing and transportation of super-long blades.
Description
Technical field
The utility model relates to large-scale wind electricity unit field, particularly, relates to a kind of large-scale wind electricity unit segmented blade.
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.
The model utility content
The purpose of the utility model is to overcome the shortcoming and defect of above-mentioned existing technology, and a kind of large-scale wind electricity unit segmented blade is provided, and can solve the difficulty that the overlength processing of leaves is made and transported.
To achieve these goals, the utility model 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.
The utility model is owing to take above technological scheme, and it has the following advantages:
1, the element of the main carrying of the joint of the segmented blade of the utility model 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 factory of the contained blade tip of the utility model 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, the technological scheme of the utility model is done further detailed description below.
Description of drawings
Fig. 1 is the basic view of joint of the utility model large-scale wind electricity unit segmented blade;
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
Describe below in conjunction with the preferred embodiment of accompanying drawing the utility model.Should be appreciated that preferred embodiment described herein only is used for explanation and explains the utility model, and be not used in qualification the utility model.
A kind of large-scale wind electricity unit segmented blade of the utility model, 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 utility model 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 embodiment of the utility model; Be not limited to the utility model; Although the utility model 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 the spirit and principle of the utility model, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection domain of the utility model.
Claims (5)
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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201962715U CN202545141U (en) | 2012-05-02 | 2012-05-02 | Sectional blade for large wind generator unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201962715U CN202545141U (en) | 2012-05-02 | 2012-05-02 | Sectional blade for large wind generator unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202545141U true CN202545141U (en) | 2012-11-21 |
Family
ID=47165785
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201962715U Expired - Lifetime CN202545141U (en) | 2012-05-02 | 2012-05-02 | Sectional blade for large wind generator unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202545141U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102635514A (en) * | 2012-05-02 | 2012-08-15 | 国电联合动力技术有限公司 | Sectional type blade of large-scale wind power generator set and connecting method for sectional type blade |
-
2012
- 2012-05-02 CN CN2012201962715U patent/CN202545141U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102635514A (en) * | 2012-05-02 | 2012-08-15 | 国电联合动力技术有限公司 | Sectional type blade of large-scale wind power generator set and connecting method for sectional type blade |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: NATIONAL ELECTRIC NEW ENERGY TECHNOLOGY INSTITUTE Effective date: 20130703 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20130703 Address after: 100000 Beijing City, Zhongguancun, South Street, building B, building No., level 56, level 16 Patentee after: Guodian United Power Technology Co., Ltd. Patentee after: Guodian New Energy Technology Institute Address before: 100000 Beijing City, Zhongguancun, South Street, building B, building No., level 56, level 16 Patentee before: Guodian United Power Technology Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20121121 |
|
| CX01 | Expiry of patent term |