CN105089942A - Blade, wind driven generator and blade manufacturing method - Google Patents
Blade, wind driven generator and blade manufacturing method Download PDFInfo
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- CN105089942A CN105089942A CN201510410226.3A CN201510410226A CN105089942A CN 105089942 A CN105089942 A CN 105089942A CN 201510410226 A CN201510410226 A CN 201510410226A CN 105089942 A CN105089942 A CN 105089942A
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- blade
- cutting lines
- housing
- leading edge
- inlet edge
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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
Abstract
The invention provides a blade, a wind driven generator and a blade manufacturing method. The blade has a first shell and a second shell, wherein the bonding place between the first shell and the second shell is a cutting line; and at least one part of the cutting line is positioned at one side of the front edge of the blade in the length direction of the blade. At least one part of the front edge of the blade is not cut to prevent the problem of weak pneumatic performance of the blade caused by machining errors.
Description
Technical field
The present invention relates to field of wind power equipment, particularly relate to blade, wind-driven generator and blade manufacture method.
Background technique
The terminological interpretation of the blade of wind-driven generator:
Vane airfoil profile: the profile referring to the cross section of blade;
Blade inlet edge: refer to the front portion on blade movement direction.
Leading edge summit: the First Point referring to blade inlet edge.
Suction surface: when referring to that air flows through, speed is higher, aerofoil profile one side surface that static pressure is less.
Pressure side: when referring to that air flows through, speed is lower, aerofoil profile one side surface that static pressure is larger.
Cutting lines: the line referring to the upper and lower two-part joint place of blade, also refers in blade actual production manufacture process, for separating the line of upper and lower mould.
Wind-driven generator mainly drives rotary electrification by impeller by wind, and its impeller is made up of 2 to 3 blades usually, and as the capital equipment of wind-driven generator, the aeroperformance of blade directly affects the generating efficiency of wind-driven generator.
Shown in participation Fig. 1, in current general blade design and production technology, the pressure side part 30 ' (PS face) of blade and suction surface 20 ' (SS face) are shaping respectively, carry out gummed again and form blade after shaping.In this kind of production technology, when dividing two profiles of blade, the method usually adopted is at the leading edge summit 12 ' of blade and trailing edge summit place separately, makes that the leading edge of blade is also corresponding is divided into two-part like this.Carry out later in the process combined, leading edge portion utilizes adhesive glue to glue together by leading edge bonding angle, finally sticks with paste (or vacuum bag pressure) outside strengthening course at outside hand.
The shortcoming of this production technology is: the pressure side part 30 ' of blade and suction surface 20 ' can produce error usually when leading edge is alignd, and this error is very large to the effect of aerodynamic performance of blade, especially in the blade tip region of blade.If the aeroperformance of blade is bad, then can affect the annual electricity generating capacity of wind-driven generator, reduce the manufacturing efficiency of wind-driven generator, affect production value.
In addition; fan blade is in running; the linear velocity at blade tip place is the fastest; in order to the erosion preventing dust storm snow mist from painting the blade inlet edge place being in blade tip section; in order to protect blade inlet edge; need after blade outer surface has sprayed paint, paste leading edge protection pad pasting 60 ' (as shown in Figure 2) in the blade inlet edge region being in blade tip section.But leading edge protection pad pasting 60 ' has certain thickness, and its existence changes blade profile aerofoil profile, especially because leading edge protection pad pasting 60 ' is positioned at tip segment, and possess certain length, therefore larger on pneumatic efficiency impact.
Summary of the invention
Embodiments of the invention provide a kind of blade, wind-driven generator and blade manufacture method, to solve the problem of the aeroperformance difference of the blade that prior art is produced.
For achieving the above object, embodiments of the invention provide a kind of blade, and this blade has the first housing and the second housing, and the joint place of the first housing and the second housing is cutting lines, along the length direction of blade, the side being positioned at blade inlet edge at least partially of cutting lines.
Further, along the length direction of blade, cutting lines entirety is positioned at the side of blade inlet edge.
Further, along the length direction of blade, cutting lines be positioned on the suction surface of blade at least partially.
Further, along the length direction of blade, the remaining part of cutting lines is positioned on the line on leading edge summit of blade inlet edge.
Further, along the length direction of blade, the remaining part of cutting lines is positioned on the pressure side of blade.
Further, along the length direction of blade, the cutting lines being at least positioned at the blade tip section of blade is positioned at the side of blade inlet edge.
Further, the cutting lines being at least positioned at the blade tip section of blade is positioned on the suction surface of blade.
Further, blade also comprises leading edge protection pad pasting, and the outside of the blade inlet edge of blade has groove, and leading edge protection pad pasting is arranged in groove.
According to a further aspect in the invention, a kind of blade manufacture method is provided, blade manufacture method, for the manufacture of above-mentioned blade, comprises the steps: that on patrix matrix, install auxiliary mould forms upper die tooling, or on counterdie matrix, installs auxiliary mould formation bed die; The upper die tooling being provided with auxiliary mould or bed die are pasted leading edge protection pad pasting; Roller coating gel coats also solidifies; Blade is molded by upper die tooling and bed die.
According to a further aspect in the invention, provide a kind of wind-driven generator, it comprises blade, and this blade is above-mentioned blade.
The side being positioned at blade inlet edge at least partially of the cutting lines of the blade of embodiments of the invention, ensure that blade inlet edge is not divided at least partially, as a whole, and then ensure that the profile of blade inlet edge is consistent with design, solve the problem of the blade aerodynamic performance reduction that machining error causes, achieve the object improving blade aerodynamic performance.
Accompanying drawing explanation
Fig. 1 is the cross-sectional type line chart of blade of the prior art;
Fig. 2 is the cross section molded line schematic diagram with the blade of leading edge protection pad pasting of the prior art;
Fig. 3 is the molded lines of the cross section of the blade of embodiments of the invention;
Fig. 4 is the cross section molded line schematic diagram of the blade with leading edge protection pad pasting of embodiments of the invention;
Fig. 5 is the flow chart of the blade manufacture method of embodiments of the invention.
Description of reference numerals:
11, cutting lines; 12, virtual secant; 20, the first housing; 30, the second housing; 40, blade inlet edge; 60, leading edge protection pad pasting.
Embodiment
Below in conjunction with accompanying drawing, the blade of the embodiment of the present invention, blade manufacture method and wind-driven generator are described in detail.In the present embodiment, the first housing and the second housing refer to two parts of composition blade.
As shown in Figure 3, according to embodiments of the invention, the joint place that blade has the first housing 20 and the second housing 30, first housing 20 and the second housing 30 forms cutting lines 11, along the length direction of blade, the side being positioned at blade inlet edge 40 at least partially of cutting lines 11.Because the side being positioned at blade inlet edge 40 at least partially of cutting lines 11 (both can be suction surface side, also can be pressure side side), so the not divided line 11 of blade inlet edge 40 is split at least partially, a complete entirety, the problem that the blade inlet edge 40 caused due to alignment error when the first housing 20 and the second housing 30 so just can be avoided to combine is uneven, ensure that the profile of blade inlet edge 40 is consistent with design, and then ensure that blade has good aeroperformance.
Know-why of the present invention is: by changing the first housing 20 of blade and the second housing 30 in the point of division position of leading edge, thus make at least part of blade inlet edge 40 global formation, matched moulds error effect when blade inlet edge 40 shape is no longer produced, thus the problem solving that the blade aerodynamic performance that causes due to blade inlet edge during matched moulds 40 meshing error reduces.
For the ease of processing, reduce cost of production, along the length direction of blade, cutting lines 11 entirety is positioned at the side of blade inlet edge 40, also namely: blade inlet edge 40 is one-body molded on the first housing 20 or the second housing 30.The first housing 20 molded like this and the structure of the second housing 30 are all comparatively simple, and follow-up matched moulds more for convenience, can reduce the loaded down with trivial details degree of work, and then increase work efficiency.
It should be noted that, in usual prior art, cutting lines 11 is arranged at the leading edge summit of aerofoil profile.And it has intactly been adjusted to the side of blade inlet edge 40 by the present embodiment.In other embodiments, cutting lines 11 can be made up of multistage, and such as, a part is positioned on the suction surface of the side of blade inlet edge 40, and remaining part is positioned on the pressure side of the opposite side of blade inlet edge 40.Again such as, a part is positioned on the suction surface of the side of blade inlet edge 40, and remaining part is positioned on the line on leading edge summit of blade inlet edge 40.
Again such as, along the length direction of blade, can only make the cutting lines 11 of the blade tip section being positioned at blade be positioned at the side of blade inlet edge 40, and the leading edge summit that remainder is still positioned at blade inlet edge 40 does not adjust.Wherein, blade tip section refers to the length of blade scope of from blade tip 30%.Such setting is because the leading edge engagement degree in blade tip region is comparatively remarkable on the impact of the aeroperformance of whole blade, therefore, as long as ensure the profile of the blade inlet edge 40 in blade tip region and design that profile is consistent just can ensure that blade has good aeroperformance.And change can be reduced in the side only the blade tip section of cutting lines 11 being arranged on blade inlet edge 40, reduce costs.
Cutting lines 11 can be adjusted on suction surface, also can adjust on pressure side.Preferably, cutting lines 11 be positioned on suction surface at least partially.Doing like this is because pressure side is working surface, and the pressure born in work is large, in order to ensure that blade has good functional reliability and serviceability, preferably cutting lines 11 is adjusted to the less suction surface of pressure, is also lee face.
See Fig. 4, described blade also comprises leading edge protection pad pasting 60, and the outside of the blade inlet edge 40 of described blade has groove, and described leading edge protection pad pasting 60 is arranged in described groove.By leading edge being protected pad pasting 60 to be arranged in groove, can ensure that the outer surface of the blade being pasted with leading edge protection pad pasting 60 is still level and smooth outer surface, making the profile of blade consistent with design profile, and then ensure the aeroperformance of blade.
Participate in Fig. 5, according to a further aspect in the invention, provide a kind of blade manufacture method, above-mentioned blade can be manufactured by the method.
This blade manufacture method comprises the steps:
First housing forming step: form the first housing 20 by upper die tooling, the forming surface of upper die tooling is design the profile of the first housing 20 determined;
Second housing forming step: form the second housing 30 by bed die, the forming surface of bed die is design the profile of the second housing 30 determined, the paring line of upper die tooling and bed die is cutting lines 11;
Blade forming step: the first housing 20 and the second housing 30 are connected to form blade.
This blade manufacture method, by the paring line position of change second housing 30 and the first housing 20, makes blade inlet edge 40 global formation, not dividedly opens, thus avoids the reduction of the leading edge aeroperformance caused owing to manufacturing error.
Particularly, in prior art when manufacturing blade, being all using the line on the leading edge summit of blade inlet edge 40 as cutting lines, being now defined as virtual secant 12.In order to reduce processing cost, enhancing productivity, utilizing existing equipment as far as possible, be convenient to the demoulding simultaneously, the blade manufacture method of the present embodiment adds auxiliary mould preferably by existing blade mold, realizes blade processing.
If be arranged on pressure side by cutting lines 11, then the profile of the first housing 20 just comprises suction base surface and suction extended surface two-part.Suction base surface is split to form according to virtual secant 12 by blade profile.Suction extended surface is the profile between cutting lines 11 and virtual secant 12.
This just needs also to comprise two-part for the upper die tooling molding the first housing 20.Upper die tooling comprises patrix matrix and auxiliary mould, and the forming surface of patrix matrix is suction base surface, and the forming surface of auxiliary mould is suction extended surface.Correspondingly, for molding the bed die adaptability revision of the second housing 30.
Concrete manufacturing process is as follows:
Patrix matrix installs auxiliary mould, for the profile that shaping first housing 20 increases.
Then on described upper die tooling, paste leading edge protection pad pasting 60, afterwards roller coating gel coats on leading edge protection pad pasting 60, and solidify; Then according to existing vane manufacturing operation, the following step is carried out successively: lay exterior skin fiberglass cloth (now exterior skin scrim cloth is laid immediately on leading edge protection pad pasting 60), lay crossbeam and core, lay trailing edge reinforced glass scrim cloth, lay inside panel glass fiber cloth, priming by vacuum, solidify, tear priming by vacuum auxiliary material off, remove auxiliary mould, web is installed, sticks with paste leading edge bonding angle at cutting lines 11 place hand.Mold the first housing 20 thus.
Bed die repeats protect the step except pad pasting 60 can mold the second housing 30 except installing auxiliary mould and pasting leading edge.
Afterwards by the first housing 20 and the second housing 30 matched moulds, be cured afterwards, the blade demoulding, front and rear edge cutting and hand stick with paste the step such as reinforcement and complete vane manufacturing.
The cross section aerofoil profile of the blade after the pad pasting manufactured thus still conforms to designing airfoil, and the below of leading edge protection pad pasting 60 has gel coats (the similar paint in its left and right) protected effect better.This whole production process easily operates, and the quality of production can ensure, the blade inlet edge shape of production meets with design perfection, can improve the pneumatic efficiency of blade, and then can improve the annual electricity generating capacity of wind-driven generator, have important economic implications.When carrying out hand and sticking with paste reinforcement, the position of reinforcement should be the joint of the first housing 20 and the second housing 30.
If be arranged on suction surface by cutting lines 11, then the profile of the second housing 30 comprises pressure-based face and pressure extended surface two-part.Pressure-based face is split to form according to virtual secant 12 by blade profile;
Pressure extended surface is the profile between cutting lines 11 and virtual secant 12.
This comprises counterdie matrix and auxiliary mould two-part with regard to needing the bed die for shaping second housing 30.The forming surface of counterdie matrix is pressure-based face, and the forming surface of auxiliary mould is pressure extended surface.
Upper outside except auxiliary mould being arranged on counterdie matrix compared to aforesaid manufacturing process, other flow process is all consistent with aforementioned, repeats no more herein.
It should be noted that, it is shaping that the first housing 20 is not necessarily by upper die tooling, also can be shaping by bed die.In like manner, it is shaping that the second housing 30 is also not necessarily by bed die, can be shaping by upper die tooling.
The structure of auxiliary mould and set-up mode etc. are similar to the leading edge bonding angle mould of existing technique, and just its profile should be determined by design profile.
According to a further aspect in the invention, provide a kind of wind-driven generator, wind-driven generator comprises at least one blade, and at least one blade is above-mentioned blade.Because the aeroperformance efficiency of this kind of blade is higher, therefore adopt the annual electricity generating capacity of the wind-driven generator of this kind of blade higher.
Blade of the present invention has following effect:
Have adjusted the position of the point of division of blade inlet edge, thus achieve at least part of global formation of blade inlet edge, ensure that blade inlet edge shape is consistent with design, prevent the blade aerodynamic hydraulic performance decline because production error causes and generated energy from declining.
Ensure that blade inlet edge shape is consistent with design by pre-buried leading edge protection pad pasting, prevent the problem that the blade aerodynamic hydraulic performance decline because production error causes and generated energy decline.Meanwhile, after avoiding first the spraying paint of existing production technology pad pasting cause pad pasting time easily produce bubble, the bubble place easily problem such as breakage, the too fast inefficacy of pad pasting.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; change can be expected easily or replace, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of described claim.
Claims (10)
1. a blade, it is characterized in that, described blade has the first housing (20) and the second housing (30), described first housing (20) is cutting lines (11) with the joint place of described second housing (30), along the length direction of described blade, the side being positioned at blade inlet edge (40) at least partially of described cutting lines (11).
2. blade according to claim 1, is characterized in that, along the length direction of described blade, described cutting lines (11) entirety is positioned at the side of described blade inlet edge (40).
3. blade according to claim 1, is characterized in that, along the length direction of described blade, on the suction surface being positioned at described blade at least partially of described cutting lines (11).
4. blade according to claim 3, is characterized in that, along the length direction of described blade, the remaining part of described cutting lines (11) is positioned on the line on the leading edge summit of described blade inlet edge (40).
5. blade according to claim 3, is characterized in that, along the length direction of described blade, the remaining part of described cutting lines (11) is positioned on the pressure side of described blade.
6. blade according to claim 1, is characterized in that, along the length direction of described blade, the described cutting lines (11) being at least positioned at the blade tip section of described blade is positioned at the side of described blade inlet edge (40).
7. blade according to claim 6, is characterized in that, the described cutting lines (11) being at least positioned at the blade tip section of described blade is positioned on the suction surface of described blade.
8. blade according to claim 1; it is characterized in that; described blade also comprises leading edge protection pad pasting (60), and the outside of the blade inlet edge (40) of described blade has groove, and described leading edge protection pad pasting (60) is arranged in described groove.
9. a blade manufacture method, is characterized in that, described blade manufacture method, for the manufacture of the blade according to any one of claim 1 to 8, comprises the steps:
Patrix matrix is installed auxiliary mould and forms upper die tooling, or auxiliary mould formation bed die is installed on counterdie matrix;
The described upper die tooling being provided with described auxiliary mould or described bed die are pasted leading edge protection pad pasting (60);
Roller coating gel coats also solidifies;
Described blade is molded by described upper die tooling and described bed die.
10. a wind-driven generator, comprises blade, it is characterized in that, the blade of described blade according to any one of claim 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510410226.3A CN105089942B (en) | 2015-07-13 | 2015-07-13 | Blade, wind-driven generator and blade manufacture method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510410226.3A CN105089942B (en) | 2015-07-13 | 2015-07-13 | Blade, wind-driven generator and blade manufacture method |
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| Publication Number | Publication Date |
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| CN105089942A true CN105089942A (en) | 2015-11-25 |
| CN105089942B CN105089942B (en) | 2019-01-29 |
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| CN201510410226.3A Active CN105089942B (en) | 2015-07-13 | 2015-07-13 | Blade, wind-driven generator and blade manufacture method |
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| CN108843486A (en) * | 2018-07-30 | 2018-11-20 | 中科国风检测（天津）有限公司 | Wind power blade leading edge protection system and construction process |
| CN109113926A (en) * | 2018-11-12 | 2019-01-01 | 北京博亦睿科技有限公司 | A kind of the blade tip extending structure and method of wind electricity blade |
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| CN109113926B (en) * | 2018-11-12 | 2023-09-22 | 北京博亦睿科技有限公司 | Blade tip extending structure and method of wind power blade |
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|---|---|
| CN105089942B (en) | 2019-01-29 |
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