CN206206091U - A kind of pneumatic equipment bladess - Google Patents
A kind of pneumatic equipment bladess Download PDFInfo
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- CN206206091U CN206206091U CN201621284367.1U CN201621284367U CN206206091U CN 206206091 U CN206206091 U CN 206206091U CN 201621284367 U CN201621284367 U CN 201621284367U CN 206206091 U CN206206091 U CN 206206091U
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- blade
- mainboard
- pasting board
- leaf basin
- pneumatic equipment
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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
A kind of pneumatic equipment bladess, the utility model is related to a kind of blade, the utility model is in order to provide a kind of process is simple, it is with low cost, a kind of pneumatic equipment bladess of good performance, it includes mainboard, leaf basin pasting board and blade back pasting board, mainboard includes blade root, blade tip, leading edge, trailing edge, leaf basin, blade back, mainboard is the arc of distortion, the intrados of mainboard circular arc is leaf basin, the extrados of mainboard circular arc is blade back, blade tip circle on mainboard where blade tip circular arc is equal with the blade root radius of circle where blade root on mainboard, the center line that the center line of blade tip circle is justified with blade root overlaps, trailing edge is justified with blade tip and blade root circle is vertically arranged, the leading edge of mainboard is curved surface, the trailing edge of mainboard is to face directly, the utility model is used for wind energy conversion system field.
Description
Technical field
The utility model is related to a kind of blade, and in particular to a kind of pneumatic equipment bladess.
Background technology
In wind-driven generator, the design and processing of blade directly influence the conversion efficiency of wind energy, directly affect generating
Amount, is an important ring of Wind Power Utilization.
Modern wind turbine blade is the shell structure that a composite is made, point root, shell, keel, leaf in structure
Four parts such as point.Blade tip type is various, there is tip, tack, gib head, the tip with wing flap etc..Manufacturing process mainly includes sun
Mould → the turn over former → laying → be heating and curing → demoulding → polishing surface → spray painting etc..Design difficulty includes the air force of blade profile
Learn design, intensity, fatigue, Noise Design, composite plys design.Critical technological point mainly includes formpiston processing, the mould system of turning over, tree
Fat system is selected.
Pneumatic equipment bladess are a large-scale composite structures, and more than the 90% of its weight is made up of composite, often
Platform generator typically has three blades, and every generator is needed with composite up to as many as four tons.Pneumatic equipment bladess are wind-force hairs
The part of most basic and most critical in motor, the good design of pneumatic equipment bladess, reliable quality and superior performance are to ensure
The determinant of unit normal table operation.
Wind-driven generator is ceaselessly operated for a long time in rugged environment, and the requirement to blade has：
1, density is light and with optimal fatigue strength and mechanical property, is amenable to the exceedingly odious condition such as storm wind and random
The test of load；
2, the inertia and its vibration frequency characteristic curve when elasticity, the rotation of blade are all normal, pass to the whole system that generates electricity
The load stability of system is good, and the effect that mental and physical efforts must not be carried off in the case of (driving) out of control is broken and flown out, also must not be in wind
Fractureed in the presence of pressure, the strong resonance for causing whole wind power generating set must not be also produced in the following scope of runaway speed；
3, the material of blade must assure that surface is smooth to reduce windage, and coarse surface also can be by wind " tear "；
4, strong Electromagnetic Interference and light reflection must not be produced；
5, do not allow to produce excessive noise；
6, corrosion-resistant, ultraviolet irradiation and thunderbolt performance are good；
7, cost is relatively low, and maintenance cost is minimum.
Micro-, the small-sized wind power generator in modern age have use wooden blade, but wooden blade is difficult to make distortion type.It is big-and-middle
Type wind-driven generator seldom use wooden blade, using wooden blade be also with intensity well entirety flitch do blade longeron come
Undertake power and moment of flexure that blade operationally must be born by.
Blade did longeron in modern age using steel pipe or D type shaped steel, and steel plate does girt strip, inside fills out the overcoating fiberglass of foamed plastics and covers
The mechanism form of skin, typically uses on large-scale wind driven generator.The steel pipe and D types shaped steel of blade longeron are from blade root to blade tip
Section should taper into, and to meet the requirement of twisted blade and mitigate leaf weight, that is, make the beam of uniform strength.
With aluminium alloy extruded shaping etc. chord length blade it is easily fabricated, can be mass, again can be by the distortion of design requirement
Distortion processing is carried out, the axle and flange that blade root is connected with wheel hub can be realized by welding or bolt connection.Aluminium alloy vane weight
Amount is light, easy to process, but can not accomplish from blade root to the tapered blade of blade tip, because not yet solving this extrusion process at present.
In addition, the aerial oxidation of aluminum alloy materials and problem of aging are also worth research.
So-called fiberglass glass fiber reinforced plastic, abbreviation GFRP) it is exactly epoxy resin, unsaturation
The reinforced plastics that the plastics such as resin penetrate into the different glass fibre of length or carbon fiber and make.Reinforced plastics intensity is high, weight
Gently, ageing-resistant, surface can again twine glass fibre and apply epoxy resin, other parts filling foamed plastics.Foam is main in blade
It is to reduce leaf quality while its stability is ensured to act on, and blade is increased wind catching area while rigidity is met.
The factors such as mechanical property and price from foam consider that the foam for being currently used for wind power generation blade core is main
Have polyvinyl chloride (PVC), polystyrene (PS), polyurethane (PUR), acrylonitrile-styrene (SAN), PEI (PEI) and
Polymethacrylimide PMI), polyethylene terephthalate (PET) etc..PVC foams are most widely used, are also first
Plant the structural foam core in bearing carrier sandwich, also referred to as crosslinked PVC.The quality of glass fibre can also pass through
Surface is modified, starching and coating are improved, and its unit (kW) cost is relatively low.
With the development of wind power generation industry, the requirement more and more higher to blade.For blade, rigidity is also one ten
Divide important index.Research shows that carbon fiber (carbon fiber, abbreviation CF) composite material blade rigidity is that fiberglass is combined
Two to three times of blade.Although the performance of carbon fibre composite is significantly better than glass fiber compound material, expensive, shadow
It has been rung in wind-power electricity generation widespread adoption.Therefore, global major composite companies are from raw material, technology, matter
The each side further investigation such as amount control, in the hope of reduces cost.
The aerofoil profile of blade is designed according to aerodynamic principle, is determine wind wheel efficiency and working condition decisive
Factor.Modern wind turbine blade shape becomes increasingly complex, and volume is increasing, and material requirement increasingly essence, cost is also more next
It is higher, seriously hamper the penetration and promotion of wind-power electricity generation, it is therefore desirable to provide a kind of process is simple, with low cost, property
The good pneumatic equipment bladess of energy.
Utility model content
The utility model is with low cost in order to provide a kind of process is simple, a kind of pneumatic equipment bladess of good performance.
The utility model is adopted the technical scheme that to solve the above problems：It includes mainboard, leaf basin pasting board and blade back patch
Plate, mainboard includes blade root, blade tip, leading edge, trailing edge, leaf basin, blade back, and mainboard is the arc of distortion, the intrados of mainboard circular arc
It is leaf basin, the extrados of mainboard circular arc is blade back, blade tip circle and the leaf where blade root on mainboard on mainboard where blade tip circular arc
Root radius is equal, and the center line that the center line of blade tip circle is justified with blade root overlaps, and trailing edge is justified with blade tip and blade root circle is vertical sets
Put, the leading edge of mainboard is curved surface, and to face directly, blade back pasting board is arranged on the blade back of mainboard the trailing edge of mainboard near blade root, leaf basin
Pasting board is arranged on the leaf basin of mainboard near blade root.
The beneficial effects of the utility model are：
1. wind turbine blade structure of the present utility model is simple, easy to process, low cost, and performance is good, is adapted to criticize
The characteristics of amount processing.
2. the utility model has blade bulk strength big, practical, the characteristics of long service life.
Brief description of the drawings
Fig. 1 is the utility model overall structure diagram, and Fig. 2 is the front view of mainboard 17, and Fig. 3 is b-b direction views in Fig. 2,
B-b sections in figure are close to root 10, and its established angle is larger, and its tangential velocity u is smaller, by u and speed of incoming flow vw, superposition
The relative velocity v of compositionrAlso smaller, it has the preferable angle of attack, and the c-c sections in figure are close to blade tip 30, and its established angle is smaller,
Its tangential velocity u is larger, by u and speed of incoming flow vw, it is superimposed the relative velocity v for constitutingrAlso larger, it also has the preferable angle of attack,
Fig. 4 is c-c direction views in Fig. 2, and Fig. 5 is the schematic diagram of mainboard 17, and Fig. 6 is the schematic diagram of mainboard 17.
Specific embodiment
Specific embodiment one：Present embodiment, a kind of wind energy conversion system leaf described in present embodiment are illustrated with reference to Fig. 1-Fig. 6
Piece, it include mainboard 17, leaf basin pasting board 16 and blade back pasting board 18, mainboard 17 include blade root 10, blade tip 30, leading edge 20, trailing edge 25,
Leaf basin 15, blade back 19, mainboard 17 are the arc of distortion, and the intrados of the circular arc of mainboard 17 is leaf basin 15, outside the circular arc of mainboard 17
Cambered surface is blade back 19, and the blade tip circle 31 on mainboard 17 where the circular arc of blade tip 30 justifies 11 half with the blade root where blade root on mainboard 17 10
Footpath is equal, and the center line of blade tip circle 31 overlaps with the center line of blade root circle 11, and trailing edge 25 hangs down with blade tip circle 31 and blade root circle 11
Straight to set, the leading edge 20 of mainboard 17 is curved surface, and to face directly, blade back pasting board 18 is arranged on master to the trailing edge 25 of mainboard 17 near blade root 10
On the blade back 19 of plate 17, leaf basin pasting board 16 is arranged on the leaf basin 15 of mainboard 17 near blade root 10.
The structure of leaf basin pasting board 16 is identical with the location for paste structure of mainboard 17 on mainboard 17 in present embodiment, leaf on mainboard 17
The structure for carrying on the back pasting board 18 is identical with the location for paste structure of mainboard 17.
Leading edge 20 is justified 11 place plane included angles and is less than 90 degree with blade root, and leading edge 20 is big with the angle that blade tip justifies 31 place planes
In 90 degree.
In order to obtain wind wheel efficiency high, each micro- section of foline angle of attack of blade is all for optimum value, it is necessary to optimal blade shape.
Because radial location residing for each foline of mainboard blade is different, its tangential velocity u is minimum in root 10, in blade tip 30 most
Greatly, therefore, by tangential velocity u and speed of incoming flow vw, it is superimposed the relative velocity v for constitutingr, gradually increased to blade tip by root.
Mainboard 17, leaf basin pasting board 16 and blade back pasting board 18 can be made using glass composite fibre, it is desirable to its surface light
Sliding, intensity is high, good toughness.And mainboard 17, leaf basin pasting board 16 and blade back pasting board 18 can also be made using light metal, such as aluminium alloy
Or stainless steel material makes.
Specific embodiment two：Present embodiment is illustrated with reference to Fig. 1, a kind of pneumatic equipment bladess described in present embodiment are main
The width of blade root 10 is three times of the width of blade tip 30 on plate 17, and the length of mainboard 17 is 20 times of the width of blade root 10, other compositions
And annexation is identical with specific embodiment one.
Specific embodiment three：Present embodiment is illustrated with reference to Fig. 5, a kind of pneumatic equipment bladess described in present embodiment are main
The cross section of leading edge 20 is arcwall face on plate 17, and other compositions and annexation are identical with specific embodiment one.
Specific embodiment four：Present embodiment, a kind of pneumatic equipment bladess, leaf described in present embodiment are illustrated with reference to Fig. 1
Basin pasting board 16 is arc, and the extrados of leaf basin pasting board 16 is jointly mounted on the intrados of leaf basin 15, and other constitute and connect
Relation is identical with specific embodiment one.
Specific embodiment five：Present embodiment, a kind of pneumatic equipment bladess, leaf described in present embodiment are illustrated with reference to Fig. 1
Back of the body pasting board 18 is arc, and the intrados of blade back pasting board 18 is jointly mounted on the extrados of blade back 19, and other constitute and connect
Relation is identical with specific embodiment one.
Specific embodiment six：Present embodiment, a kind of pneumatic equipment bladess, leaf described in present embodiment are illustrated with reference to Fig. 1
The length of basin pasting board 16 is 2/3rds of the length of mainboard 17, and the length of blade back pasting board 18 is 1/3rd of the length of mainboard 17,
Leaf basin pasting board 16 is alignd with the root of mainboard 17, and leaf basin pasting board 16 is fixed with mainboard 17, and pneumatic equipment bladess are by one layer
It is changed into two-layer；Blade back pasting board 19 is evened up with the root of mainboard 17, and blade back pasting board 19 is fixed with mainboard 17, is changed into three layers, further
Blade bulk strength is increased, other compositions and annexation are identical with specific embodiment one.
A kind of processing method of pneumatic equipment bladess described in present embodiment is realized according to following steps：
Step one：Prepare material：Prepare a pipe for same curvature, the length of pipe is L；
Step 2：Computational length：Due to 20 times that the length of mainboard 17 is the width of blade root 10, the width of blade root 10 is 1/20L,
The width of blade tip 30 is 1/60L；
Step 3：Line：On pipe the line of leading edge 20 and the line of trailing edge 25 are drawn according to the size of mainboard 17；
Step 4：Fixed pipe：The two ends of pipe are fixed on the table；
Step 5：Processing：According to the trailing edge 25 for pulling line by the trailing edge 25 of mainboard 17 in pipe cut separate, according to draw
The line disk electric saw of good leading edge 20 is processed, and the leading edge 20 of mainboard 17 is cut into separation on pipe；
Step 6：Processing arcwall face：Leading edge 20 after being processed in step 5 is processed, the cross section of leading edge 20 is added
Work camber face；
Step 7：Chamfering：The trailing edge 25 of mainboard 17 carries out chamfering deburring after being processed to step 6, and then completes this practicality
New purpose.
Claims (6)
1. a kind of pneumatic equipment bladess, it is characterised in that：It includes blade mainboard (17), leaf basin pasting board (16) and blade back pasting board
(18), blade mainboard (17) includes blade root (10), blade tip (30), leading edge (20), trailing edge (25), leaf basin (15), blade back (19), main
Plate (17) is the arc of distortion, and the intrados of mainboard (17) circular arc is leaf basin (15), and the extrados of mainboard (17) circular arc is leaf
The back of the body (19), blade tip circle (31) on mainboard (17) where blade tip (30) circular arc and the blade root circle where blade root (10) on mainboard (17)
(11) radius is equal, and the center line of blade tip circle (31) overlaps with the center line of blade root circle (11), and trailing edge (25) justifies (31) with blade tip
Be vertically arranged with blade root circle (11), the leading edge (20) of mainboard (17) is curved surface, the trailing edge (25) of mainboard (17) to face directly, blade back
Near blade root (10) on the blade back (19) of mainboard (17), leaf basin pasting board (16) is arranged on pasting board (18) near blade root (10)
On the leaf basin (15) of mainboard (17).
2. a kind of pneumatic equipment bladess according to claim 1, it is characterised in that：The width of blade root (10) is leaf on mainboard (17)
Three times of sharp (30) width, the length of mainboard (17) is 20 times of blade root (10) width.
3. a kind of pneumatic equipment bladess according to claim 1, it is characterised in that：The cross section of leading edge (20) is on mainboard (17)
Arcwall face.
4. a kind of pneumatic equipment bladess according to claim 1, it is characterised in that：Leaf basin pasting board (16) is arc, leaf basin patch
The extrados of plate (16) is jointly mounted on the intrados of leaf basin (15).
5. a kind of pneumatic equipment bladess according to claim 1, it is characterised in that：Blade back pasting board (18) is arc, blade back patch
The intrados of plate (18) is jointly mounted on the extrados of blade back (19).
6. a kind of pneumatic equipment bladess according to claim 1, it is characterised in that：The length of leaf basin pasting board (16) is mainboard (17)
2/3rds of length, the length of blade back pasting board (18) is 1/3rd of mainboard (17) length.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621284367.1U CN206206091U (en) | 2016-11-28 | 2016-11-28 | A kind of pneumatic equipment bladess |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621284367.1U CN206206091U (en) | 2016-11-28 | 2016-11-28 | A kind of pneumatic equipment bladess |
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| Publication Number | Publication Date |
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| CN206206091U true CN206206091U (en) | 2017-05-31 |
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ID=58748221
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| CN201621284367.1U Active CN206206091U (en) | 2016-11-28 | 2016-11-28 | A kind of pneumatic equipment bladess |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106678002A (en) * | 2016-11-28 | 2017-05-17 | 哈尔滨工大金涛科技股份有限公司 | Wind turbine blade and blade machining method |
-
2016
- 2016-11-28 CN CN201621284367.1U patent/CN206206091U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106678002A (en) * | 2016-11-28 | 2017-05-17 | 哈尔滨工大金涛科技股份有限公司 | Wind turbine blade and blade machining method |
| CN106678002B (en) * | 2016-11-28 | 2023-10-20 | 哈尔滨工大金涛科技股份有限公司 | Wind turbine blade and blade processing method |
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