CN205744282U - Pneumatic equipment blades and the vortex generator mounting bar for pneumatic equipment blades - Google Patents
Pneumatic equipment blades and the vortex generator mounting bar for pneumatic equipment blades Download PDFInfo
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- CN205744282U CN205744282U CN201620554499.5U CN201620554499U CN205744282U CN 205744282 U CN205744282 U CN 205744282U CN 201620554499 U CN201620554499 U CN 201620554499U CN 205744282 U CN205744282 U CN 205744282U
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- vortex generator
- mounting bar
- pneumatic equipment
- wind speed
- pedestal
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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
This utility model relates to a kind of pneumatic equipment blades and the vortex generator mounting bar for pneumatic equipment blades, including blade body, it is characterized in that: arranging vortex generator mounting bar along low wind speed suction surface flow separation start line in described blade body, described vortex generator mounting bar is a plurality of end to end；Every vortex generator mounting bar includes pedestal with the n being arranged on pedestal to vortex generator, and n is positive integer.Every pair of vortex generator includes the vortex generator lamellar body of two lamellars triangular in shape.Flow separation line under the trailing edge line low wind speed of laminating of described vortex generator mounting bar.Whole swirler mounting bar is in the region between low wind speed suction surface flow separation start line and big wind speed suction surface flow separation start line.This utility model improves Stall Type blower fan generated output at low wind speeds, and vortex generator is inoperative under big wind speed, to prevent Stall Type blower fan from issuing electricity overload at big wind speed, exceedes motor rated power, causes compressor emergency shutdown.
Description
Technical field
This utility model relates to a kind of pneumatic equipment blades and the vortex generator mounting bar for pneumatic equipment blades, belongs to wind
Power machine blade aerodynamic technical field.
Background technology
Pneumatic equipment blades is the core work parts of wind energy conversion system, and wind energy conversion system output electric energy is exactly based on pneumatic equipment blades from stream
Blowing air obtains, i.e. wind energy-mechanical energy-electric energy.Thus the size that pneumatic equipment blades captures wind energy from air will directly be closed
Being tied to the energy output of self, embodiment the most intuitively is exactly the Cp value of wind energy conversion system, i.e. power coefficient.Pneumatic equipment blades
Aerodynamic characteristic directly affect the Cp value of blade.
During wind energy conversion system runs, root or major part leaf exhibition scope at blade are likely to flow separation, affect wind
The capture rate of power machine.Vortex generator (Vortex Generators, VGs) is a kind of effective ways controlling flow separation.
For aerodynamic principle, after blade installs VGs additional, by the high energy of the low-yield fluid in blades flows boundary region Yu outer layer
Amount fluid blends, and is equivalent to be filled with new eddy current energy in boundary region, keeps the full of boundary layer velocity type, thus
Reach increase whirlpool induced lift and delay, stop the purpose separated, enable blade to keep preferable lift efficiency, increase wind wheel
Power output.
At present to installing the patent of invention of vortex generator raising change paddle type wind energy conversion system Cp value additional much, but for state
In interior wind field, the improved design project of Stall Type blower fan is actually rare in early days.But China's wind field still has substantial amounts of early stage stall
Type blower fan is currently running, and for these Stall Type blower fans, improves maximum Cp value effect the most little.Stall Type blower fan is reaching
It is in full hair-like state time under the wind speed of maximum Cp value correspondence, then has improved Cp value and can not improve the output of wind energy conversion system, instead
And be easily caused motor overload and shut down, thus reduce the economy of blower fan.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, it is provided that a kind of pneumatic equipment blades and for wind
The vortex generator mounting bar of power machine blade, improves Stall Type blower fan generated output at low wind speeds, and under big wind speed
Vortex generator is inoperative, to prevent Stall Type blower fan from issuing electricity overload at big wind speed, exceedes motor rated power, causes machine
Group is shut down.
The technical scheme provided according to this utility model, described pneumatic equipment blades, including blade body, it is characterized in that:
In described blade body, vortex generator mounting bar, described vortex generator are set along low wind speed suction surface flow separation start line
Mounting bar is a plurality of end to end；Every vortex generator mounting bar includes that eddy current is occurred by pedestal and the n being arranged on pedestal
Device, n is positive integer.
Further, the every pair of vortex generator includes the vortex generator lamellar body of two lamellars triangular in shape.
Further, the height of described vortex generator lamellar body be H, H=δ, δ be the boundary-layer height on blade body surface；
The a length of 3.6H of described vortex generator lamellar body；The angle of attack of two vortex generator lamellar bodies of every pair of vortex generator be 15～
16°；The most advanced and sophisticated distance of two vortex generator lamellar bodies of every pair of vortex generator is 2H, adjacent two pairs of vortex generators adjacent
The distance at two vortex generator lamellar body tips is 5H.
Further, the thickness of described pedestal is 0.04 δ, and the total length of pedestal is 5 × 7H, and width is 5H.
Further, the flow separation line under the trailing edge line low wind speed of laminating of described vortex generator mounting bar.
Further, whole swirler mounting bar is in low wind speed suction surface flow separation start line and big wind speed suction surface
Region between flow separation start line.
Further, described pedestal and vortex generator use integration to manufacture.
Further, described vortex generator mounting bar uses gluing being connected in blade body.
Described vortex generator mounting bar, is characterized in that: include pedestal with the n being arranged on pedestal to vortex generator, n
For positive integer；Every pair of vortex generator includes the vortex generator lamellar body of two lamellars triangular in shape.
Further, the height of described vortex generator lamellar body be H, H=δ, δ be the boundary-layer height on blade body surface；
The a length of 3.6H of described vortex generator lamellar body；The angle of attack of two vortex generator lamellar bodies of every pair of vortex generator be 15～
16°；The most advanced and sophisticated distance of two vortex generator lamellar bodies of every pair of vortex generator is 2H, adjacent two pairs of vortex generators adjacent
The distance at two vortex generator lamellar body tips is 5H；The thickness of described pedestal is 0.04 δ, and the total length of pedestal is 5 × 7H, wide
Degree is 5H.
This utility model has the advantage that (1) this utility model can reduce the flowing at low wind speed of the Stall Type blower fan
Separated region, improves Stall Type blower fan at low wind speed at the generated energy run；(2) this utility model uses vortex generator, pushes away
The flow separation of suction surface of wind turbine blade late, reduces separating area, increases the torque of blade, thus improves the generating of wind energy conversion system
Amount；(3) structurally use gluing mode to be installed on blade, blade construction itself is not required, such that it is able to always
The wind energy conversion system of wind field is reequiped, and increases economic efficiency；(4) for the Wind turbine installed and generated electricity at present, this practicality
The vortex generator design of novel proposition can carry out installing vortex generator additional, uses gluing mode to be installed to blade
On, blade construction itself is not required, such that it is able to the wind energy conversion system of old wind field is reequiped, improves the output work of wind energy conversion system
Rate, brings more preferable economic benefit.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the flow separation start line under two kinds of wind speed of leaf model suction surface.
Fig. 2 is the schematic diagram of the pneumatic equipment blades in true application.
Fig. 3 is the partial enlarged drawing of Fig. 2.
Fig. 4 is the schematic diagram of vortex generator mounting bar.
Detailed description of the invention
Below in conjunction with concrete accompanying drawing, the utility model is described in further detail.
First set up 3D model, then grid division according to actual wind field turbines vane, in conjunction with wind field mean wind speed and
Blower fan rated wind speed, carries out CFD analog simulation, processes simulation result, draws the mobility status of blade suction surface.
According to the mobility status of suction surface, mark off flow separation regions and non-current separated region, at its intersection be
The start line of flow separation, as it is shown in figure 1, lines 1 are blower fan when operating under big wind speed wind wheel blade suction surface flow separation
Start line, wind wheel blade suction surface flow separation start line when lines 2 operate at low wind speeds for blower fan.Flow under normal circumstances
The start line separated not is straight line as shown in Figure 1, is intended merely to Practical Project situation, is reduced to straight line, it is simple at blade
Surface line is installed.
Meanwhile, simulation result can draw, is separating the height δ of intersection blade surface boundary-layer, general by checking
The speed shape distribution of neighbouring some blade surfaces, substantially can draw the magnitude of boundary-layer height, thus determines eddy current and occurs
The height of device, because the mechanism of action of vortex generator is the high-energy fluid outside boundary region is blended into the low of inside boundary
Energy region, is equivalent to inject new eddy current energy to inside boundary, thus inhibits flow separation.
Boundary-layer height δ according to computation and measurement, determines the height H of vortex generator, incorporation engineering practical situation and life
Producing manufacture situation to accept or reject, both height values are in same order magnitude range, it is proposed that the height H ≈ δ of vortex generator.
Calculate according to substantial amounts of numerical simulation and optimize, setting a length of 3.6H of vortex generator, meeting of vortex generator
(angle of attack is self direction of vortex generator sheet and carry out the angle of flow path direction, and as shown in Figure 4), and two are for angle beta=15～16 °
A pair, positive and negative 15～16 ° of angles of attack, spacing be 2H, with vortex generator head cusp measure.And with 7H distance as cycle
Arranging, five pairs of vortex generators install band as one, compare the installation of independent a pair vortex generator, to install band forms
Mode can alleviate workload when installing on fan blade.
Preferably carrying out grinding process in the blade surface area installed during installation, the unit installed after all is to have been put into fortune
The unit of row, the roughness of blade surface, attachment all can affect the installation of vortex generator bar, use 3M glue gluing during installation
Mode, basic 24h is the most curable, firmly.
Even if blade surface occurs the situation such as setup error or loss when installing vortex generator bar, use one chemical conversion
The mounting bar of shape can also replace polishing the most easily, can also conveniently replace including the maintenance with rear fan unit
Or dismounting.
For wind field with annual mean wind speed 7.5m/s, Stall Type blower fan unit installs vortex generator additional and does not installs eddy current
The unit of generator is compared, and peak power output can improve about 2% to 3%.
Specifically, as shown in Figure 2 and Figure 3, pneumatic equipment blades described in the utility model, including blade body 10, at blade originally
Along low wind speed suction surface flow separation start line, vortex generator mounting bar 20 is set, to delay the flowing of blade surface on body 10
Separate, the flow separation line under the trailing edge line low wind speed of laminating of vortex generator mounting bar 20, and guarantee that whole swirler is pacified
Dress bar 20 is in the region between low wind speed suction surface flow separation start line and big wind speed suction surface flow separation start line；Institute
It is a plurality of end to end for stating vortex generator mounting bar 20, and as shown in Figure 4, every vortex generator mounting bar 20 includes pedestal 21
With the n being arranged on pedestal 21 to vortex generator 22, n is positive integer (in Fig. 4, n is 5)；Described pedestal 21 and vortex generator
22 use integration to manufacture, and material is engineering plastics or metal, it is simple to manufactures and installs.As shown in Figure 4, every pair of eddy current
Generator 22 includes the vortex generator lamellar body of two lamellars triangular in shape, and the height 3 of vortex generator lamellar body is H, H=blade
The boundary-layer height δ on body 10 surface, the length 4 of vortex generator lamellar body is 3.6H；Two whirlpools of every pair of vortex generator 22
The angle of attack 5 of flow-generator lamellar body is 15～16 ° (preferably 16 °)；Two vortex generator lamellar body points of every pair of vortex generator 22
Distance 8=2H of end, distance 9=5H at adjacent two vortex generator lamellar bodies tip of adjacent two pairs of vortex generators 22.Described
The thickness of pedestal 21 is 0.04 δ, and the total length 6 of pedestal 21 is 5 × 7H, and width 7 is 5H.
Claims (10)
1. a pneumatic equipment blades, including blade body (10), is characterized in that: inhale along low wind speed in described blade body (10)
Power face flow separation start line arranges vortex generator mounting bar (20), and described vortex generator mounting bar (20) is a plurality of head and the tail
Connect；Every vortex generator mounting bar (20) includes that pedestal (21) and the n that is arranged on pedestal (21) are to vortex generator
(22), n is positive integer.
2. pneumatic equipment blades as claimed in claim 1, is characterized in that: the every pair of vortex generator (22) include two triangular in shape
The vortex generator lamellar body of lamellar.
3. pneumatic equipment blades as claimed in claim 2, is characterized in that: the height of described vortex generator lamellar body is H, H=δ, δ
Boundary-layer height for blade body (10) surface；The a length of 3.6H of described vortex generator lamellar body；Every pair of vortex generator
(22) angle of attack of two vortex generator lamellar bodies is 15～16 °；Two vortex generator sheets of every pair of vortex generator (22)
The distance at body tip is 2H, and the distance that adjacent two vortex generator lamellar bodies of adjacent two pairs of vortex generators (22) are most advanced and sophisticated is
5H。
4. pneumatic equipment blades as claimed in claim 3, is characterized in that: the thickness of described pedestal (21) is 0.04 δ, pedestal (21)
Total length be 5 × 7H, width is 5H.
5. pneumatic equipment blades as claimed in claim 1, is characterized in that: the trailing edge line patch of described vortex generator mounting bar (20)
Close the flow separation line under low wind speed.
6. pneumatic equipment blades as claimed in claim 1, is characterized in that: whole swirler mounting bar (20) is in low wind speed suction
Region between face flow separation start line and big wind speed suction surface flow separation start line.
7. pneumatic equipment blades as claimed in claim 1, is characterized in that: described pedestal (21) and vortex generator (22) use one
Bodyization manufactures.
8. pneumatic equipment blades as claimed in claim 1, is characterized in that: described vortex generator mounting bar (20) uses gluing connecing
In blade body (10).
9. a vortex generator mounting bar, is characterized in that: include that eddy current is sent out by pedestal (21) and the n being arranged on pedestal (21)
Raw device (22), n is positive integer；Every pair of vortex generator (22) includes the vortex generator lamellar body of two lamellars triangular in shape.
10. vortex generator mounting bar as claimed in claim 9, is characterized in that: the height of described vortex generator lamellar body is
H, H=δ, δ are the boundary-layer height on blade body (10) surface；The a length of 3.6H of described vortex generator lamellar body；Every pair of eddy current
The angle of attack of two vortex generator lamellar bodies of generator (22) is 15～16 °；Two eddy current of every pair of vortex generator (22) are sent out
The most advanced and sophisticated distance of raw device lamellar body is 2H, adjacent two vortex generator lamellar bodies of adjacent two pairs of vortex generators (22) most advanced and sophisticated away from
From for 5H；The thickness of described pedestal (21) is 0.04 δ, and the total length of pedestal (21) is 5 × 7H, and width is 5H.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620554499.5U CN205744282U (en) | 2016-06-08 | 2016-06-08 | Pneumatic equipment blades and the vortex generator mounting bar for pneumatic equipment blades |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620554499.5U CN205744282U (en) | 2016-06-08 | 2016-06-08 | Pneumatic equipment blades and the vortex generator mounting bar for pneumatic equipment blades |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205744282U true CN205744282U (en) | 2016-11-30 |
Family
ID=57359931
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620554499.5U Active CN205744282U (en) | 2016-06-08 | 2016-06-08 | Pneumatic equipment blades and the vortex generator mounting bar for pneumatic equipment blades |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205744282U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105840415A (en) * | 2016-06-08 | 2016-08-10 | 无锡风电设计研究院有限公司 | Wind turbine blade and vortex generator mounting bars used in the wind turbine blade |
| CN110392782A (en) * | 2017-02-15 | 2019-10-29 | 西门子歌美飒可再生能源公司 | Building structure with means for reducing induced vibrations |
| CN113107758A (en) * | 2021-04-16 | 2021-07-13 | 北京腾燊科技有限公司 | A device and blade of making an uproar falls in gradual shrinkage formula for blade |
-
2016
- 2016-06-08 CN CN201620554499.5U patent/CN205744282U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105840415A (en) * | 2016-06-08 | 2016-08-10 | 无锡风电设计研究院有限公司 | Wind turbine blade and vortex generator mounting bars used in the wind turbine blade |
| CN110392782A (en) * | 2017-02-15 | 2019-10-29 | 西门子歌美飒可再生能源公司 | Building structure with means for reducing induced vibrations |
| CN110392782B (en) * | 2017-02-15 | 2022-04-26 | 西门子歌美飒可再生能源公司 | Building structure with means for reducing induced vibrations |
| CN113107758A (en) * | 2021-04-16 | 2021-07-13 | 北京腾燊科技有限公司 | A device and blade of making an uproar falls in gradual shrinkage formula for blade |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |