CN206352557U - A kind of wind power blade tip lightening extending structure - Google Patents
A kind of wind power blade tip lightening extending structure Download PDFInfo
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- CN206352557U CN206352557U CN201621388817.1U CN201621388817U CN206352557U CN 206352557 U CN206352557 U CN 206352557U CN 201621388817 U CN201621388817 U CN 201621388817U CN 206352557 U CN206352557 U CN 206352557U
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- Prior art keywords
- blade tip
- blade
- extension
- bonding
- lamellar body
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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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Abstract
The utility model discloses a kind of wind power blade tip lightening extending structure, Wind turbines power ascension is realized by increasing active service wind electricity blade length, blade tip extension is made up of multiple lamellar bodies, each lamellar body is Nian Jie with basic blade, each lamellar body alleviates the drastically change of general thickness using wedge-shaped laying, and use prefabricated bonding tongue increase adhesive strength, the stress concentration of connection end is alleviated with opening up to groove structure by design tooth profile end, suppress crack Propagation, improve the bearing capacity and reliability being glued.The prefabricated bonding tongue of blade tip prolongation in the region be bonded with basic blade, increase the lifting surface area of bonding, at blade tip end, pressure face is be bonded with suction surface extension to form continuous entirety, remain for being bonded Z-shaped edge in advance in each extension lamellar body side, the bonding to splicing line is extended for each part.Blade tip extending structure of the present utility model has high, the sufficient alignment tolerance of bonding strength and reliability and the characteristics of consistent aerodynamic configuration.
Description
Technical field
The utility model is related to a kind of blade of wind-driven generator, more particularly to a kind of wind power blade tip lightening extending structure, category
In the parts of wind power plant.
Background technology
With the change of global climate, certain change can also occur for the wind-resources characteristic of wind power plant so that former wind-force money
The wind energy conversion system power output matched under the characteristic of source declines.Wind energy conversion system captures wind energy, the length of wind electricity blade mainly by wind electricity blade
Directly affect the ability of wind energy conversion system capture wind energy and the power output of wind power generating set.Increase wind electricity blade is long at low wind speeds
Degree can effectively improve the generated energy of wind energy conversion system.
In addition, wind electricity blade cost accounts for the 15%-20% of complete machine unit cost, if carried out to active service wind electricity blade whole
Body, which is changed, certainly will increase too high improvement cost, increase cost of electricity-generating, therefore the integral replacing of blade is unfavorable for improving wind turbine
The economy of group transformation.Design a kind of structure reliably, implement simple wind electricity blade extension and implementing process, reduction transformation
Cost, is very important.Existing blade tip extends technology, is structure as a whole the blade tip extension of blade more, main logical
Cross and bond or blade tip extension links together with basic blade by the mode of mechanical connection, there is many defects, mainly
Show：Blade tip extension needs overall processing to manufacture, and there is production cost height, the defect of low production efficiency, it is impossible to meet real
Border needs；Either blade tip extension is linked together with basic blade by way of bonding or by mechanical connection, all
There is bonding strength not high, the defect such as join domain stress distribution is unreasonable has had a strong impact on the leaf longevity after extension.
Utility model content
In view of the above-mentioned problems, technical problem to be solved in the utility model is to provide a kind of wind power blade tip lightening extension knot
Structure, blade tip extension realizes Wind turbines power ascension by increasing active service wind electricity blade length, and blade tip extension is adopted
Spliced with precast block and shaped, production efficiency is substantially increased so that blade tip extension simple installation, in addition, blade tip extension
The aerodynamic configuration of blade is neither influenceed to add the bonding between lamellar body again using Z-shaped bonding groove splicing construction between each prefabricated lamellar body
Intensity, is reinforced using prefabricated Nian Jie tonguing row between blade tip extension and basic blade section, adhesive strength is added, in addition, in advance
System bonding tongue turning can greatly reduce the stress concentration in splicing face using obtuse angle, bonding tongue two ends end face using wedge-shaped transition and
Toothed end；It is wedge-shaped transition in the end of blade tip extension, and comprising toothed end and opens up to groove, this structure can has
The reduction bonding stress raisers of effect, suppress bonding layer crackle and are continuously extended under fatigue load, improve glue-joint strength and tired
The labor life-span.
By solution, its technical problem is adopted the technical scheme that the utility model：
A kind of wind power blade tip lightening extending structure, including basic blade section and blade tip extension, it is characterised in that the base
Plinth blade sections and blade tip extension are linked together by prefabricated bonding tongue, wherein,
-- the blade tip extension includes extension leading edge lamellar body, extension suction surface lamellar body, extension prepared by split
Trailing edge lamellar body and extension pressure face lamellar body；Two sides of each lamellar body, which are each formed with being bonded between groove, adjacent two lamellar body, to be passed through
The bonding groove of respective side is combined together；Each lamellar body is formed as the toothed end of wedge-shaped transition close to one end of blade root, and
Exhibition is provided with the toothed end to groove；
-- the blade tip extension is mutually overlapped close to one end of blade root with basic blade section close to one end of blade tip, mutually
Bonding agent is provided with the region of overlap joint；The blade extension is strengthened with basic blade section junction with the prefabricated Nian Jie tongue
The inner side of basic blade section is close in connection, one end of the prefabricated bonding tongue, and the other end is close to the inner side of blade tip extension, described
Prefabricated bonding tongue is provided with bonding agent with basic blade section, the conformable region of blade tip extension.
Preferably, the prefabricated bonding tongue is in integrally zigzag.
Preferably, the prefabricated bonding tongue includes two turnings, and each turning is obtuse angle.
Preferably, the two ends of the prefabricated bonding tongue are the toothed end of wedge-shaped transition.
Preferably, the prefabricated bonding tongue is prefabricated wall scroll, then parallel to lay together, or is prefabricated into monoblock.
Preferably, the bonding groove is the Z between Z-shaped bonding groove, adjacent two blade tips extension lamellar body by respective side
Shape bonding groove is combined together.
Preferably, it is described it is Z-shaped bonding groove extend to formed in the both sides of each lamellar body of blade tip extension, it is each it is Z-shaped bonding groove with
Each blade tip extension lamellar body is prefabricated to be formed, or is cut and formed after each blade tip extension lamellar body is formed.
Preferably, the blade tip of the basic blade extends and forms it into connecting end surface to cutting out a part.
Compared with the existing technology, wind power blade tip lightening extending structure of the present utility model has following significant technology effect
Really：
1st, the structure that blade tip extension splices shaping using precast block substantially increases production efficiency, improves blade tip and prolongs
The simplicity that long section is installed.
2nd, the aerodynamic configuration of blade is neither influenceed again using Z-shaped bonding groove splicing construction between each lamellar body of blade tip extension
Add the adhesive strength between lamellar body.
3rd, blade tip extension is reinforced with the junction of basic blade section using prefabricated Nian Jie tonguing row, adds blade tip extension
The adhesive strength of section and basic blade section.
4th, prefabricated bonding tongue turning can greatly reduce the stress concentration in splicing face using obtuse angle, and bonding tongue two ends end face is adopted
With wedge-shaped transition and toothed end；It is wedge-shaped transition in the end of blade tip extension, and comprising toothed end and opens up to groove, this
Bonding stress raisers can effectively be reduced by planting structure, suppressed bonding layer crackle and continuously extended under fatigue load, improved
Glue-joint strength and fatigue life.
Brief description of the drawings
Fig. 1 wind power blade tip lightening extending structure schematic diagrames of the present utility model；
Fig. 2 is the structural representation of wind power blade tip lightening extension；
Fig. 3 is the Section A-A view of blade tip extension；
Fig. 4 is blade tip extension and basic blade section connection diagram；
Fig. 5 is that blade tip extension is connected top view with basic blade section；
Fig. 6 is that blade tip extension is connected 3-D view with basic blade section；
Fig. 7 is integrated the prefabricated bonding tongue structure schematic diagram being made；
Fig. 8 is the prefabricated bonding tongue structure schematic diagram that burst is made.
Embodiment
For the purpose of this utility model, technical scheme and advantage is more clearly understood, below in conjunction with specific embodiment, and
Referring to the drawings, the utility model is further described.It should be noted that as described below is only of the present utility model preferable
Embodiment, does not therefore limit protection domain of the present utility model.In fact, without departing from scope of the present utility model or essence
In the case of god, various modifications and variations can be carried out in the utility model, this will be aobvious for a person skilled in the art
And be clear to.For example, the feature for showing or describing as the part of one embodiment can make together with another embodiment
For producing another embodiment.Therefore, it is intended that the utility model includes such modifications and variations in appended right
In the range of claim and their equivalent.
As shown in figure 1, wind power blade tip lightening extending structure of the present utility model includes basic blade section 1 and blade tip extension
2, end of the blade tip extension 2 with basic blade section 1 by way of bonding links together, and blade tip extension 2 is by split system
Four standby lamellar body structure compositions.
As shown in Figure 2,3, blade tip extension 1 is prepared by split extension leading edge lamellar body 21, extension suction surface lamellar body
22nd, four lamellar bodies such as extension trailing edge lamellar body 23, extension pressure face lamellar body 24 constitute aerodynamic configuration, at each lamellar body both sides edge
Blade is opened up and linked together by respective Z-shaped adhesive trough 25 to being provided between Z-shaped adhesive trough 25, the side of each lamellar body, phase
The mutually overlap joint of Z-shaped adhesive trough 25 on the side of adjacent two panels side is snapped together, and bonding agent is filled in overlap.Blade tip extension
2 structures for splicing shaping using precast block substantially increase production efficiency, substantially increase the simplicity of blade tip extension installation
Property.The aerodynamic configuration of blade is neither influenceed to add the bonding between lamellar body again using Z-shaped bonding groove splicing construction between each lamellar body
Intensity.
As shown in figures 4-6, blade extension 2 passes through close to one end of blade root with basic blade section 1 close to one end of blade tip
Overlap and use prefabricated bonding tongue 3 to strengthen connection.Blade tip extension 2 is close to tooth form of the one end of blade root for overall wedge shaped transition
End 26, is provided with exhibition to groove 27 on the toothed end 26 of the inclined plane shape of blade tip extension 2, inclined plane shape toothed end 26
The lateral overlap of 1 end of inner side and basic blade section is simultaneously close together, and is connected with bonding agent 4 therebetween, this structure can
Stress raisers are bonded with effective reduce, suppresses bonding layer crackle and is continuously extended under fatigue load, improve glue-joint strength
And fatigue life.Further, blade extension 2 is strengthened with the ladder section of 1 junction of basic blade section with prefabricated Nian Jie tongue 3,
The inner side of basic blade section 1 is close in one end of prefabricated bonding tongue 3, and the other end is close to the inner side of blade tip extension 2, uses bonding agent
4 are glued.Reinforced in blade extension 2 with 1 junction of basic blade section using prefabricated Nian Jie tongue 3, leaf can be effectively increased
Adhesive strength between sharp extension 2 and basic blade section 1.
As shown in Figure 7,8, prefabricated bonding tongue 3 is overall in zigzag, including two turnings, and two turnings are obtuse angle, prefabricated
The turning of bonding tongue 3 can greatly reduce the stress concentration in splicing face using obtuse angle.The wedge shaped mistake in two ends of prefabricated bonding tongue 3
Cross, and each end includes toothed end 31.As shown in fig. 7, prefabricated bonding tongue 3 is formed by composite precast, it is prefabricated viscous
An entirety can be prefabricated into by connecing tongue 3.As shown in figure 8, prefabricated bonding tongue 3 can also be prefabricated into wall scroll, then parallel laying.Bar
The prefabricated bonding tongue 3 of shape is laid on the inside of blade along tangential, is connected between blade using bonding agent 9.
Particular embodiments described above, has carried out entering one to the purpose of this utility model, technical scheme and beneficial effect
Step is described in detail.It should be understood that and the foregoing is only specific embodiment of the utility model, be not limited to this
Utility model, all within spirit of the present utility model and principle, any modification, equivalent substitution and improvements done etc. all should be wrapped
It is contained within protection domain of the present utility model.
Claims (8)
1. a kind of wind power blade tip lightening extending structure, including basic blade section and blade tip extension, it is characterised in that the basis
Blade sections and blade tip extension are linked together by prefabricated bonding tongue, wherein,
-- the blade tip extension includes extension leading edge lamellar body, extension suction surface lamellar body, extension trailing edge prepared by split
Lamellar body and extension pressure face lamellar body；Two sides of each lamellar body are each formed with being bonded between groove, adjacent two lamellar body by respective
The bonding groove of side is combined together；Each lamellar body is formed as the toothed end of wedge-shaped transition close to one end of blade root, and in institute
The exhibition of being provided with toothed end is stated to groove；
-- the blade tip extension is mutually overlapped close to one end of blade root with basic blade section close to one end of blade tip, mutually overlap joint
Region in be provided with bonding agent；The blade extension is strengthened connecting with basic blade section junction with the prefabricated Nian Jie tongue
Connect, the inner side of basic blade section is close in one end of the prefabricated bonding tongue, and the other end is close to the inner side of blade tip extension, described pre-
System bonding tongue is provided with bonding agent with basic blade section, the conformable region of blade tip extension.
2. wind power blade tip lightening extending structure according to claim 1, it is characterised in that the prefabricated bonding tongue is in integrally
Zigzag.
3. wind power blade tip lightening extending structure according to claim 1, it is characterised in that the prefabricated bonding tongue includes two
Individual turning, each turning is obtuse angle.
4. wind power blade tip lightening extending structure according to claim 1, it is characterised in that the two ends of the prefabricated bonding tongue
It is the toothed end of wedge-shaped transition.
5. wind power blade tip lightening extending structure according to claim 1, it is characterised in that the prefabricated bonding tongue is prefabricated
Wall scroll, then parallel laying together, or is prefabricated into monoblock.
6. wind power blade tip lightening extending structure according to claim 1, it is characterised in that the bonding groove is Z-shaped bonding
It is combined together between groove, adjacent two blade tips extension lamellar body by the Z-shaped bonding groove of respective side.
7. wind power blade tip lightening extending structure according to claim 6, it is characterised in that the Z-shaped bonding groove extend to
Formed in the both sides of each lamellar body of blade tip extension, each Z-shaped bonding groove with each blade tip extension lamellar body is prefabricated forms, or in each blade tip
Extension lamellar body cuts after being formed and formed.
8. wind power blade tip lightening extending structure according to claim 1, it is characterised in that the blade tip edge of the basic blade
Open up and form it into connecting end surface to cutting out a part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621388817.1U CN206352557U (en) | 2016-12-18 | 2016-12-18 | A kind of wind power blade tip lightening extending structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621388817.1U CN206352557U (en) | 2016-12-18 | 2016-12-18 | A kind of wind power blade tip lightening extending structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206352557U true CN206352557U (en) | 2017-07-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621388817.1U Expired - Fee Related CN206352557U (en) | 2016-12-18 | 2016-12-18 | A kind of wind power blade tip lightening extending structure |
Country Status (1)
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| CN (1) | CN206352557U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106499578A (en) * | 2016-12-18 | 2017-03-15 | 中国科学院工程热物理研究所 | A kind of wind power blade tip lightening extending structure and method |
| CN108223304A (en) * | 2018-02-28 | 2018-06-29 | 中国科学院工程热物理研究所 | Blade tip extends connection structure and its assembly method |
| CN112960532A (en) * | 2021-01-29 | 2021-06-15 | 山东中车风电有限公司 | Inflatable wind power blade hoisting tool and equipment |
-
2016
- 2016-12-18 CN CN201621388817.1U patent/CN206352557U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106499578A (en) * | 2016-12-18 | 2017-03-15 | 中国科学院工程热物理研究所 | A kind of wind power blade tip lightening extending structure and method |
| CN106499578B (en) * | 2016-12-18 | 2023-11-21 | 中国科学院工程热物理研究所 | Wind power blade tip extension structure and method |
| CN108223304A (en) * | 2018-02-28 | 2018-06-29 | 中国科学院工程热物理研究所 | Blade tip extends connection structure and its assembly method |
| CN108223304B (en) * | 2018-02-28 | 2023-09-12 | 中国科学院工程热物理研究所 | Blade tip extension connection structure and assembly method thereof |
| CN112960532A (en) * | 2021-01-29 | 2021-06-15 | 山东中车风电有限公司 | Inflatable wind power blade hoisting tool and equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170725 Termination date: 20201218 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |