CN110552836A - Impeller for wind energy collection - Google Patents
Impeller for wind energy collection Download PDFInfo
- Publication number
- CN110552836A CN110552836A CN201810552048.1A CN201810552048A CN110552836A CN 110552836 A CN110552836 A CN 110552836A CN 201810552048 A CN201810552048 A CN 201810552048A CN 110552836 A CN110552836 A CN 110552836A
- Authority
- CN
- China
- Prior art keywords
- impeller
- hole
- wind
- streamline
- blade
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 238000003306 harvesting Methods 0.000 claims 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000010408 sweeping Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D1/00—Wind motors with rotation axis substantially parallel to the air flow entering the rotor
- F03D1/06—Rotors
- F03D1/0608—Rotors characterised by their aerodynamic shape
- F03D1/0633—Rotors characterised by their aerodynamic shape of the blades
- F03D1/0641—Rotors characterised by their aerodynamic shape of the blades of the section profile of the blades, i.e. aerofoil profile
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D1/00—Wind motors with rotation axis substantially parallel to the air flow entering the rotor
- F03D1/06—Rotors
- F03D1/065—Rotors characterised by their construction elements
- F03D1/0675—Rotors characterised by their construction elements of the blades
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Wind Motors (AREA)
Abstract
The invention discloses an impeller, in particular to an impeller for collecting wind energy. The invention comprises an impeller, a plurality of blades are annularly arranged on the impeller, any blade comprises an upward convex upper streamline surface and a downward convex lower streamline surface, the convex height of the upper streamline surface is higher than that of the lower streamline surface, the upper streamline surface comprises an upper windward surface and an upper leeward surface, and the lower streamline surface comprises a lower windward surface and a lower leeward surface, and the invention is characterized in that: the upper windward side is provided with a through hole, the through hole transversely penetrates through the blade, and the through hole is opened on the lower leeward side. The invention controls the flow direction of the wind through the air pressure, so that the flow direction of the wind in the through hole is relatively stable, and for the flat lands such as the grassland with uncertain wind direction, the blade swing is relatively small and the mechanical resistance is reduced due to the fact that the thrust of the wind is very stable, so that the rotation is faster and more electric power is generated.
Description
Technical Field
The invention relates to an impeller, in particular to an impeller for collecting wind energy.
Background
Wind energy is a green new energy, and is commonly used in plains, plateaus and other areas in China at present.
The wind energy is usually collected by adopting a power generation impeller, and because the wind direction of the great plain is unstable, the obliquely blowing wind can cause the fan blades to swing, at the moment, the blades can be clamped, the mechanical resistance is caused, the rotating effect of the fan blades is reduced, and therefore the wind energy collecting effect is reduced.
Disclosure of Invention
The invention aims to: in view of the above problems, the present invention provides an impeller for wind energy collection capable of reducing mechanical resistance.
The technical scheme adopted by the invention is as follows:
The impeller for wind energy collection is characterized in that a plurality of blades are arranged on the impeller in the axial direction, any blade comprises an upward convex upper streamline surface and a downward convex lower streamline surface, the height of the protrusion of the upper streamline surface is higher than that of the lower streamline surface, the upper streamline surface comprises an upper windward surface and an upper leeward surface, the lower streamline surface comprises a lower windward surface and a lower leeward surface, a through hole is formed in the upper windward surface, and the through hole transversely penetrates through the blade and is used for forming a hole in the lower leeward surface.
Preferably, the diameter of the through hole is gradually reduced from the upper windward side to the lower leeward side.
Preferably, the outer surface of the blade is rough and has a roughness of Ra2.5.
Preferably, the inner hole wall surface of the through hole is rough and has roughness Ra2.5.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
According to the impeller for wind energy collection, the blades adopt the upper streamline surface and the lower streamline surface with different heights to generate different air pressures, the blades are pushed by the air pressures, so that the blades are driven to rotate, at the moment, wind passes through the outer surfaces of the blades and enters through holes in the upper windward surface, at the moment, the wind is cut in, the air pressure of the lower leeward surface is small, the wind flows from high-pressure air pressure to low-pressure air pressure and flows out from the lower leeward surface, and the inner surfaces of the through holes are pushed.
According to the impeller for wind energy collection, the flow direction of wind in the through hole is stable due to the fact that the flow direction of the wind is controlled through air pressure, and for flat lands such as large grasslands with uncertain wind directions, due to the fact that the thrust of the wind is stable, the blade swings slightly, mechanical resistance is reduced, and therefore the impeller rotates faster and generates more electric power.
Drawings
FIG. 1 is a block diagram of the present invention;
FIG. 2 is a blade block diagram of the present invention;
The labels in the figure are: 1-a blade; 1.1-a through-hole; 1.2-upper windward side; 1.3-windward side; 1.4-lower windward side; 1.5-lower leeward side; 2-impeller.
Detailed Description
All features disclosed in this specification may be combined in any combination, except features and/or steps that are mutually exclusive.
example one
In this embodiment, as shown in fig. 1, a plurality of blades 1 are circumferentially arranged on an impeller 2, each blade 1 includes an upper streamline surface protruding upward and a lower streamline surface protruding downward, the protruding height of the upper streamline surface is higher than the protruding height of the lower streamline surface, the upper streamline surface includes an upper windward surface 1.2 and an upper leeward surface 1.3, the lower streamline surface includes a lower windward surface 1.4 and a lower leeward surface 1.5, the upper windward surface 1.2 is provided with a through hole 1.1, the through hole 1.1 transversely penetrates through the blade 1, and the through hole 1.1 is provided with an opening on the lower leeward surface 1.5.
In the use process, the blade 1 adopts the upper streamline surface and the lower streamline surface with different heights to cause different air pressures, the air pressure pushes the blade 1 to rotate, at the moment, wind passes through the outer surface of the blade 1 and enters the through hole 1.1 of the upper windward surface 1.2, at the moment, the air pressure of the lower leeward surface 1.5 is small due to wind cut-in, so that the wind flows from the high-pressure air pressure to the low-pressure air pressure and goes out from the lower leeward surface 1.5, and the inner surface of the through hole 1.1 is pushed.
The flow direction of the wind in the through holes 1.1 is stable due to the fact that the flow direction of the wind is controlled through air pressure, and for the flat ground with the uncertain wind direction, the blade 1 swings less due to the fact that the thrust of the wind is stable, mechanical resistance is reduced, and therefore the rotating speed is faster, and more electric power is generated.
Example two
This embodiment is further improved based on embodiment 1, as shown in fig. 1, the diameter of the through hole 1.1 gradually decreases from the upper windward side 1.2 to the lower leeward side 1.5.
In the use process, the aperture is gradually reduced, so that the wind speed is increased, and the gas backflow of the lower leeward side 1.5 is prevented.
EXAMPLE III
This embodiment is further improved based on any one of embodiments 1 to 2, and as shown in fig. 1, the outer surface of the blade 1 is rough and has a roughness ra 2.5.
In use, the roughness is such that the thrust caused by the wind sweeping over the outer surface is greater by the roughness being Ra2.5.
Example four
this embodiment is further improved based on any one of embodiments 1 to 3, and as shown in fig. 1, the inner hole wall surface of the through hole 1.1 is rough and has a roughness ra 2.5.
The roughness, ra2.5, makes the thrust created by the wind passing through the through-hole 1.1 greater during use.
The above description is an embodiment of the present invention. The present invention is not limited to the above embodiments, and any structural changes made under the teaching of the present invention shall fall within the protection scope of the present invention, which is similar or similar to the technical solutions of the present invention.
Claims (4)
1. An impeller for wind energy collection, wherein a plurality of blades (1) are arranged on the impeller (2) in the circumferential direction, any one of the blades (1) comprises an upward convex upper streamline surface and a downward convex lower streamline surface, the convex height of the upper streamline surface is higher than that of the lower streamline surface, the upper streamline surface comprises an upper windward surface (1.2) and an upper leeward surface (1.3), and the lower streamline surface comprises a lower windward surface (1.4) and a lower leeward surface (1.5), and the impeller is characterized in that: the upper windward side (1.2) is provided with a through hole (1.1), the through hole (1.1) transversely penetrates through the blade (1), and the through hole (1.1) is opened on the lower leeward side (1.5).
2. An impeller for wind energy harvesting according to claim 1, wherein: the aperture of the through hole (1.1) is gradually reduced from the upper windward side (1.2) to the lower leeward side (1.5).
3. An impeller for wind energy harvesting according to claim 1, wherein: the outer surface of the blade (1) is rough and has the roughness of Ra2.5.
4. an impeller for wind energy harvesting according to claim 1, wherein: the inner hole wall surface of the through hole (1.1) is rough and the roughness is Ra2.5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810552048.1A CN110552836A (en) | 2018-05-31 | 2018-05-31 | Impeller for wind energy collection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810552048.1A CN110552836A (en) | 2018-05-31 | 2018-05-31 | Impeller for wind energy collection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110552836A true CN110552836A (en) | 2019-12-10 |
Family
ID=68734557
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810552048.1A Withdrawn CN110552836A (en) | 2018-05-31 | 2018-05-31 | Impeller for wind energy collection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110552836A (en) |
-
2018
- 2018-05-31 CN CN201810552048.1A patent/CN110552836A/en not_active Withdrawn
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20191210 |