CN208486978U - A kind of vertical axis windmill - Google Patents
A kind of vertical axis windmill Download PDFInfo
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- CN208486978U CN208486978U CN201721846998.2U CN201721846998U CN208486978U CN 208486978 U CN208486978 U CN 208486978U CN 201721846998 U CN201721846998 U CN 201721846998U CN 208486978 U CN208486978 U CN 208486978U
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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
- Y02E10/74—Wind turbines with rotation axis perpendicular to the wind direction
Abstract
The utility model discloses a kind of vertical axis windmills, belong to wind energy resources and utilize field.The utility model includes pneumatic equipment bladess, and wind energy conversion system central principal axis, the upper and lower wheel hub of wind energy conversion system, wherein there is shaft in blade side, and wheel hub includes outer ring, sheet metal structural and central shaft hole.Each blade is placed on wind turbine hub by the vertical axis windmill, and wheel hub is fixed on central axis both ends.Wind energy conversion system design is simple, upper and lower wheel hub structure, the stability of whole wind energy conversion system can be controlled well, and the utility model wind energy utilization is high, staring torque is big, without " dead point ", it is suitable for current various wind resource development areas, and is suitable for the lower region of part wind resource Development volue.
Description
Technical field
The utility model belongs to wind energy resources and utilizes field, and in particular to a kind of vertical axis windmill.
Background technique
With the reduction increasingly of the traditional energies deposit such as petroleum, coal, people face severe energy crisis, this is greatly
The research and development that have stimulated wind generating technology, the renewable energy including wind energy are then the important plans to cope with challenges
Slightly, the bolt tangerine that it will make the mankind successfully get rid of fossil fuel.In recent years, wind generating technology obtains the height weight of national governments
Depending on specific manifestation are as follows: the rapid growth of installed capacity of wind-driven power and constantly improve for wind-powered electricity generation standard: novel wind-driven generator is continuous
It emerges in large numbers, and is widely used and promotes.Vertical axis aerogenerator is a kind of novel wind-driven generator, startability is good,
It is suitble to any wind direction, therefore it greatly improves the utilization rate of wind energy, by various countries' extensive concern.
Each blade of current vertical axis wind power generator is fixed on by various modes on wind energy conversion system central axis, working principle
Two main Types can be divided into, one kind is done work using aerodynamical resistance, and typical structure is S type wind wheel (such as Fig. 1),
It is made of the semi-cylindrical of two axis misalignments, its advantage is that starting torque is larger, the disadvantage is that due to generating around wind wheel
Asymmetric flow, to generate lateral thrust to it.For relatively large wind energy conversion system, due to the limit by deflection and limit stress
System, is relatively difficult using this structure type.Another kind of done work using the lift of aerofoil profile, most typically darrieus
(Darrieus) type wind energy conversion system (such as Fig. 2-Fig. 6), not only blade chord width is smaller, blade quantity 2-3, therefore starting performance is poor,
It needs to start by other means, but maximum defect is the connection structure form due to blade, wind energy conversion system cannot achieve gas
Dynamic speed limit, therefore can not just be operated when high wind, otherwise wind energy conversion system easily disintegrates, if as grid-connected wind machine, application range
It is relatively narrow, but advantage is without pylon, and wind machine structure is simple, at low cost；Secondly, H-type vertical wind machine, blade quantity is few, opens
There is " dead point " position when dynamic, when blade is more, torque all very littles due to the type wind energy conversion system in each horizontal direction section should
If class wind energy conversion system blade chord width needs very high threshold wind velocity when again smaller, and the type pneumatic equipment bladess connection type makes leaf
The piece angle of attack can not change, therefore also just cannot achieve pneumatic hypervelocity control, generally be only capable of doing hypervelocity control with unloading resistance, unfavorable
Develop in large and medium-sized direction.
Utility model content
The purpose of this utility model is to utilize the vertical axis windmill design of aerodynamic resistance operation complicated for tradition,
And the defects of utilizing the vertical axis windmill starting performance of the lift acting of aerofoil profile poor, according to aerodynamic principle, propose
A kind of that each pneumatic equipment bladess shaft is placed on wind turbine hub, wheel hub is fixed on wind energy conversion system central principal axis, not only design letter
Single, easy to process, effective front face area maximum can reach 50% or so of its wind energy conversion system and wind direction section, and not have dead point
Position is suitble to any wind direction.
The technical solution adopted in the utility model are as follows: a kind of vertical axis windmill, including pneumatic equipment bladess, wind energy conversion system center
Main shaft, the upper and lower wheel hub of wind energy conversion system, wherein there is shaft in blade side, and wheel hub includes outer ring, sheet metal structural and central shaft hole, wind
Power machine blade is connected by being located at the shaft of blade side with the upper and lower wheel hub of wind energy conversion system；The center of the upper and lower wheel hub of wind energy conversion system
Place is fixed with wind energy conversion system central axis, and wind power utilizing device can be connected to central axis bottom end, when wheel hub drives wind energy conversion system center axis rotation
When, central axis also drives wind power utilizing device work simultaneously.
Wherein, which can design according to specific requirements is greater than 2, and central shaft shape will meet
Fixed structure is constituted with blade at against the wind.
Wherein, under non-solder and bonding situation, section is non-circular, central axis middle part and number of blade phase at central axis both ends
Matched protrusion cooperates convenient for blade and central axis and stablizing for upper lower hub.
Wherein, upper and lower wheel hub includes outer ring, sheet metal structural and central shaft hole, and outer ring is circle, has certain thickness,
Thickness is adjusted according to wind energy conversion system power requirement, and there is axis hole in upper and lower wheel hub outer ring, and part is protruded in sheet metal structural in axis hole position
Extended line on, and the axis hole of upper and lower wheel hub outer ring can guarantee on the same axis；Sheet metal structural part is located at metal plate
There is certain protrusion in the middle part of structure, the protrusion of position and central axis coincide, the metal plate protruding portion of upper and lower wheel hub
Divide and constitutes a fixed structure with protrusion in the middle part of central axis and blade rotor；Centre bore and two end section phase one of central axis
It causes.
Wherein, shaft is located at the side of blade, and shaft upper and lower ends are higher by blade certain altitude, pacifies shaft upper and lower ends
In axis hole loaded on upper and lower wheel hub outer ring, and blade can be made to rotate freely under the action of the wind.
Wherein, it is fitted close at wind energy conversion system central principal axis upper and lower ends and upper and lower hub centre, fixes upper and lower wheel hub
In central axis upper and lower ends；After wind power utilizing device and center axis connection, wind power utilizing device is driven using the rotation of central axis
Work.
Wherein, the upper and lower wheel hub of wind energy conversion system is fixed on the both ends of central axis, there is the axis hole of fixed blade, phase on wheel hub outer ring
Axis hole central axis is answered to be overlapped, it is ensured that parallel with central axis after blade installation；Meanwhile having on wheel hub and the metal plate of center axis connection
Prominent structure, rotate freely blade will not at upwind position.
Wherein, blade is connected by being located at the shaft of one side with the axis hole for being located at upper and lower wheel hub outer ring；Wheel hub is fixed on
Wind energy conversion system central axis both ends；Wind power utilizing device can connect with wind energy conversion system central axis, wind energy utilization is driven by center axis rotation
Equipment work；
Pneumatic equipment bladess adjust its own position according to aerodynamic principle, by wind direction, in upwind position due to wheel hub
The protrusion of sheet metal structural makes it be difficult to rotate freely, in upper position since it is freely revolved with sheet metal structural disengaging
Turn, substantially increase wind energy utilization area, achievees the purpose that improve wind energy utilization.
The utility model has the following beneficial effects:
The utility model proposes vertical axis windmill adverse wind face face can be reduced according to aerodynamic principle automatically
Product, so that the efficiency that wind energy conversion system utilizes wind energy is improved, and wind machine structure design is simple, easy to maintain quick, wind energy benefit
With rate height, staring torque is big, without " dead point ", since its structural stability is good there are upper and lower wheel hub, is suitable for current various wind-force
Mining area, and it is suitable for the lower region of part wind resource Development volue.
Detailed description of the invention
Fig. 1 is the S type vertical axis windmill schematic diagram of the prior art；
Fig. 2 is the H-type darrieus wind energy conversion system schematic diagram of the prior art；
Fig. 3 is the Δ type darrieus wind energy conversion system schematic diagram of the prior art；
Fig. 4 is the diamond pattern darrieus wind energy conversion system schematic diagram of the prior art；
Fig. 5 is the Y type darrieus wind energy conversion system schematic diagram of the prior art；
Fig. 6 is the Φ type darrieus wind energy conversion system schematic diagram of the prior art；
Fig. 7 is the blade schematic diagram of the utility model；
Fig. 8 is the central axis schematic diagram of the utility model；
Fig. 9 is the wheel hub schematic diagram of the utility model；
Figure 10 is the sheet metal structural schematic diagram of the utility model；
Figure 11 is the wind energy conversion system operation schematic diagram of the utility model.
Specific embodiment
With reference to the accompanying drawing and implement, the utility model is described in further details by taking quaterfoil as an example.
A kind of vertical axis windmill of the utility model, including pneumatic equipment bladess (such as Fig. 7), wind energy conversion system central principal axis is (as schemed
8), the upper and lower wheel hub of wind energy conversion system (such as Fig. 9), wherein there is a shaft in blade side, wheel hub include outer ring, sheet metal structural (such as Figure 10) with
And central shaft hole.
Central axis both ends are worked as under non-solder and bonding situation, section be it is non-circular, matched in the middle part of central axis with the number of blade
Protrusion, cooperate convenient for blade and central axis and stablizing for upper lower hub.
Upper and lower wheel hub includes outer ring, sheet metal structural and central shaft hole.Outer ring is circle, has certain thickness, thickness root
It is adjusted according to wind energy conversion system power requirement, there are axis hole, extension of the axis hole position in sheet metal structural protrusion part in upper and lower wheel hub outer ring
On line, and the axis hole of upper and lower wheel hub outer ring can guarantee on the same axis；Sheet metal structural part, positioned at sheet metal structural
There is certain protrusion at middle part, and the protrusion of position and central axis coincide, and the metal plate protrusion of upper and lower wheel hub is in
Protrusion and blade rotor constitute a fixed structure in the middle part of mandrel；Centre bore is consistent with two end section of central axis.
Blade-section, blade rotor are located at the side of blade, and shaft upper and lower ends are higher by blade certain altitude, make in shaft
Lower both ends are installed in the axis hole of upper and lower wheel hub outer ring, and blade can be made to rotate freely under the action of the wind.
The connection relationship of each component part are as follows:
Wheel hub is fixed on wind energy conversion system central axis both ends；Blade is by being located at the shaft of one side and being located at outside upper and lower wheel hub
The axis hole of circle is connected；Wind power utilizing device can connect with wind energy conversion system central axis, wind power utilizing device is driven by center axis rotation
Work.
Wind energy conversion system central principal axis upper and lower ends are that section matches with the centre bore at upper and lower hub centre, make to take turns above and below
Hub is fixed on central axis upper and lower ends；After wind power utilizing device and center axis connection, wind energy benefit is driven using the rotation of central axis
It is worked with equipment.
The upper and lower wheel hub of wind energy conversion system is fixed on the both ends of central axis, there is the axis hole of fixed blade, corresponding axis on wheel hub outer ring
Hole central axis is overlapped, it is ensured that parallel with central axis after blade installation；Meanwhile there is protrusion on wheel hub and the metal plate of center axis connection
Structure rotate freely blade will not at upwind position.
Pneumatic equipment bladess adjust its own position according to aerodynamic principle, by wind direction, in upwind position due to wheel hub
The protrusion of sheet metal structural makes it be difficult to rotate freely, in upper position since it is freely revolved with sheet metal structural disengaging
Turn, substantially increase wind energy utilization area, achievees the purpose that improve wind energy utilization.
The vertical axis windmill of the utility model, according to aerodynamic principle, when wind comes, windward side blade due to
Sheet metal structural outstanding on wheel hub makes blade windward side be in upwind position；
Wind power propelling blade, blade drive central axis rotation by wheel hub；
When blade is rotated to leeward, since wind-force acts on, the sheet metal structural on blade and wheel hub is detached from, and blade passes through
Blade rotor can rotate freely, to reduce blade and wind action area, reduce wind energy conversion system resistance, improve wind energy conversion system
Wind energy utilization.
The specific work process of this vertical wind machine is:
Step 1: when the wind blows such as Figure 11, according to aerodynamic principle, since air movement generates pressure, blade
It is acted on, will rotate freely by wind-force；
Step 2: when the blade in windward side rotates, due to the structure at wheel hub metal plate position, it is prevented freely to revolve
Turn, in the case where blade is affected by the wind, blade band runner hub is around center axis rotation, and then wheel hub drives center axis rotation,
Wind energy conversion system is set to do work；
Step 3: when blade goes to adverse wind face, the structure at wheel hub metal plate position fails to the interception of blade, this
When, blade is detached from the metal plate position of wheel hub under the action of the wind, and is rotated freely, and since wind-force acts on, blade will be inverse at its
The smallest position of wind area is in balance；
Step 4: as blade band runner hub is further rotated around central axis, blade is again positioned at position windward from adverse wind face
It sets, at this point, blade wind-engaging power acts on, is pressed with wheel hub sheet metal structural, next just repeat step 2~step 4.
In the present embodiment, by taking 1MW output power as an example, wind speed 1m/s, atmospheric density 1.29kg/m are chosen3, mechanical efficiency
0.98。
According to wind turbine shaft horse-power formula:
W=Q × P × 3600 × 0.98 × η
Wherein, W indicates wind turbine shaft power, unit W；Q indicates flow, unit m3/s；P indicates full blast pressure, unit Pa；
3600 indicate 3600s per hour；η indicates wind energy conversion system internal efficiency.
Q=v × S
Wherein, v indicates wind speed, unit m/s；S indicates that wind energy conversion system available wind energy utilizes area.
P=0.5 × ρ × v2
Wherein, ρ indicates atmospheric density, units/kg/m3。
Since the maximum available wind energy of blade utilizes area:
Blade area-blade rotor thickness
Minimum available wind energy utilizes area:
The thickness of 0.707 × blade area-blade rotor
In the present embodiment, taking wind energy conversion system internal efficiency is 0.8.
Each known quantity is brought into respective formula, available rated output power is the wind energy conversion system of 1MW, needs effective wind
It can be 549.1533m using area2。
In the case where blade height and certain shaft diameter, the wider wind energy conversion system of width of blade utilizes the efficiency of wind energy more
Height, i.e. wind energy conversion system internal efficiency is higher, and its structural stability of upper and lower wheel hub is good.Due to pneumatic equipment bladess area and effective wind
Can be related using area, it is proportional between the two, therefore, it can be seen that in the case where identical output power, this implementation
The pneumatic equipment bladess size of example is smaller compared with conventional wind machine size, this greatly improves the utilization rate of the right wind energy of wind energy conversion system,
Reduce wind energy conversion system production cost, and resource is greatly saved.
Claims (8)
1. a kind of vertical axis windmill, it is characterised in that: including pneumatic equipment bladess, wind energy conversion system central principal axis, wind energy conversion system is taken turns above and below
Hub, wherein there is shaft in blade side, and wheel hub includes outer ring, sheet metal structural and central shaft hole, and pneumatic equipment bladess are by being located at leaf
The shaft of piece side is connected with the upper and lower wheel hub of wind energy conversion system；The center position and wind energy conversion system central axis of the upper and lower wheel hub of wind energy conversion system are solid
Fixed, wind power utilizing device can be connected to central axis bottom end, when wheel hub drives wind energy conversion system center axis rotation, central axis while also band
Dynamic wind power utilizing device work.
2. a kind of vertical axis windmill as described in claim 1, it is characterised in that: the pneumatic equipment bladess number is according to specific need
Design is asked to be greater than 2, central shaft shape, which will meet, constitutes fixed structure with blade at contrary wind.
3. a kind of vertical axis windmill as described in claim 1, it is characterised in that: structure centre axis both ends are when non-solder and glue
In the case of knot, section is protrusion that is non-circular, being matched in the middle part of central axis with the number of blade, convenient for blade and central axis and upper
Lower hub stablizes cooperation.
4. a kind of vertical axis windmill as described in claim 1, it is characterised in that: upper and lower wheel hub includes outer ring, sheet metal structural
And central shaft hole, outer ring are circle, thickness is adjusted according to wind energy conversion system power requirement, and there is axis hole in upper and lower wheel hub outer ring,
Axis hole position is on the extended line of sheet metal structural protrusion part, and the axis hole of upper and lower wheel hub outer ring can guarantee in same axis
On line；, there is a protrusion in sheet metal structural part in the middle part of sheet metal structural, and the protrusion of position and central axis coincide,
Protrusion and blade rotor constitute a fixed structure in the middle part of the metal plate protrusion and central axis of upper and lower wheel hub；Centre bore
It is consistent with two end section of central axis.
5. a kind of vertical axis windmill as described in claim 1, it is characterised in that: the shaft on blade is located at the one of blade
Side, shaft upper and lower ends are higher by blade, are installed on shaft upper and lower ends in the axis hole of upper and lower wheel hub outer ring, and can make blade
It rotates freely under the action of the wind.
6. a kind of vertical axis windmill as described in claim 1, it is characterised in that: wind energy conversion system central principal axis upper and lower ends with
It is fitted close at upper and lower hub centre, upper and lower wheel hub is made to be fixed on central axis upper and lower ends；Wind power utilizing device and central axis
After connection, wind power utilizing device is driven to work using the rotation of central axis.
7. a kind of vertical axis windmill as described in claim 1, it is characterised in that: the upper and lower wheel hub of wind energy conversion system is fixed on center
The both ends of axis, there is the axis hole of fixed blade on wheel hub outer ring, and corresponding axis hole central axis is overlapped, it is ensured that after blade installation with center
Axis is parallel；Meanwhile having prominent structure on wheel hub and the metal plate of center axis connection, revolve blade will not freely at upwind position
Turn.
8. a kind of vertical axis windmill as described in claim 1, it is characterised in that: blade by be located at the shaft of one side with
Axis hole positioned at upper and lower wheel hub outer ring is connected；Wheel hub is fixed on wind energy conversion system central axis both ends；Wind power utilizing device can be connected to
Wind energy conversion system central axis drives wind power utilizing device work by center axis rotation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721846998.2U CN208486978U (en) | 2017-12-26 | 2017-12-26 | A kind of vertical axis windmill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721846998.2U CN208486978U (en) | 2017-12-26 | 2017-12-26 | A kind of vertical axis windmill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208486978U true CN208486978U (en) | 2019-02-12 |
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ID=65254624
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721846998.2U Active CN208486978U (en) | 2017-12-26 | 2017-12-26 | A kind of vertical axis windmill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208486978U (en) |
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2017
- 2017-12-26 CN CN201721846998.2U patent/CN208486978U/en active Active
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