CN108953059A - A kind of power transmission unit for wind-power electricity generation - Google Patents
A kind of power transmission unit for wind-power electricity generation Download PDFInfo
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- CN108953059A CN108953059A CN201810785010.9A CN201810785010A CN108953059A CN 108953059 A CN108953059 A CN 108953059A CN 201810785010 A CN201810785010 A CN 201810785010A CN 108953059 A CN108953059 A CN 108953059A
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 81
- 230000005611 electricity Effects 0.000 title claims abstract description 36
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- 238000005096 rolling process Methods 0.000 claims description 5
- 238000010248 power generation Methods 0.000 abstract description 7
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Classifications
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- 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
- F03D3/00—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor
- F03D3/06—Rotors
- F03D3/061—Rotors characterised by their aerodynamic shape, e.g. aerofoil profiles
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- 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
- F03D13/00—Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components
- F03D13/10—Assembly of wind motors; Arrangements for erecting wind motors
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- 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
- F03D15/00—Transmission of mechanical power
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- 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
- F03D3/00—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor
- F03D3/06—Rotors
- F03D3/062—Rotors characterised by their construction elements
-
- 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
- F03D3/00—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor
- F03D3/06—Rotors
- F03D3/062—Rotors characterised by their construction elements
- F03D3/064—Fixing wind engaging parts to rest of rotor
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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
-
- 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
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- 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 a kind of power transmission units for wind-power electricity generation, belong to wind power generation field.The present invention includes transmission case and the blade for being respectively arranged at transmission case two sides, and the blade of every side includes vertical shaft, and the blade that section is S-shaped is distributed in the two sides central symmetry of vertical shaft, and vertical shaft lower part is connected by gear drive with transmission case；Blade includes the first vertical shaft and the second vertical shaft, and the two sides of the first vertical shaft are respectively equipped with the first blade and the second blade；The two sides of second vertical shaft are respectively equipped with third blade and quaterfoil, the first blade, the second blade, third blade and quaterfoil section be S-shaped.The present invention overcomes in the prior art that wind-power electricity generation wind energy utilization is lower, the higher deficiency of production cost, provides a kind of power transmission unit for wind-power electricity generation, can effectively convert wind energy into electric energy, and cost is relatively low, with strong applicability, application range is wide.
Description
Technical field
The present invention relates to technical field of wind power generation, more specifically to a kind of power transmission for wind-power electricity generation
Unit.
Background technique
It is more and more important to the exploitation of wind-resources as traditional energy faces exhausted and pollution environment.But account for wind-resources
The area in area 68% belongs to low wind speed area, and second level and force 3 wind enclose the 85% of wind-resources total amount, this part resource is always
Wind-force exploits problem.And existing wind generating technology has the following problems: wind-driven generator is according to the angle of rotary shaft and wind direction
It is broadly divided into two kinds of forms: horizontal shaft type wind-driven generator and perpendicular axis type wind-driven generator.
Existing wind-driven generator mainly uses trunnion axis high speed wind wheel, and major defect is the need for higher starting wind
Speed, and the direction of the variation adjustment wind wheel according to wind direction is needed, the size of blade will mainly be determined according to the height of pylon, greatly
Application range is reduced greatly, and since blade will be mounted on the top of pylon, made troubles to installation and maintenance.To improve wind energy
Utilization rate and reduce cost, wind power plant still has biggish optimization space.
Through retrieving, such as Chinese Patent Application No.: CN92236222X, denomination of invention: sail type wind power device passes through
The blade rotating angle on the perpendicular wing is adjusted with the wind and controls the air-flow on-off of the perpendicular wing to absorb the wind-force of any direction, reduces starting wind
Speed, but lack the mechanism of control wind energy conversion system revolving speed；Such as Chinese Patent Application No.: CN2004100675751, denomination of invention: lift,
Resistance combined vertical axis wind mill, the liter for enabling blade using air-flow using the distribution that deflector and guiding device change air-flow
Power and resistance acting have achieved the purpose that reduce wind energy conversion system threshold wind velocity and have improved working efficiency.However, its guiding device structure
Huge, at high cost, and box haul is needed to change, that there are movement inertias is big, control is high-power asks.
For another example Chinese Patent Application No.: 2017102141328, the applying date: on April 1st, 2017, invention and created name are as follows:
A kind of light-duty wind power generation plant, this application discloses light-duty wind power generation plants, including frame structure, moving blade device
And generating set.By the improvement to arc wind blade in moving blade device, so that wind power utilization rate has obtained significantly
Improve, by being provided with the only fast piece of proper angle and suitable material in its suitable position, enables and closed when wind is big
Reduction of speed is managed, so that the durability of the light-duty wind power generation plant and stability are improved.But there is still a need for more horn of plenties in industry
The wind-power electricity generation form of multiplicity, also has the space further promoted for the utilization efficiency of wind energy.
Summary of the invention
1. technical problems to be solved by the inivention
It is an object of the invention to overcome in the prior art, wind-power electricity generation wind energy utilization is lower, production cost is higher not
Foot, provides a kind of power transmission unit for wind-power electricity generation, can effectively convert wind energy into electric energy, and cost is relatively low,
With strong applicability, application range is wide.
2. technical solution
In order to achieve the above objectives, technical solution provided by the invention are as follows:
A kind of power transmission unit for wind-power electricity generation of the invention, including transmission case and it is respectively arranged at transmission case two
The blade of side, the blade of every side include vertical shaft, and the blade that section is S-shaped, vertical shaft is distributed in the two sides central symmetry of vertical shaft
Lower part is connected by gear drive with transmission case.
Further, blade includes the first vertical shaft and the second vertical shaft for being set to transmission case two sides, and the two of the first vertical shaft
Side is respectively equipped with the first blade and the second blade, and the first blade and the second blade are centrosymmetric distribution around the first vertical shaft；The
The two sides of two vertical shafts are respectively equipped with third blade and quaterfoil, and third blade and quaterfoil are in center pair around the second vertical shaft
Claim distribution；First blade, the second blade, third blade and quaterfoil section be S-shaped.
Further, the first blade and the second blade pass through screw threads for fastening respectively and are connected with the first vertical shaft, third blade
Pass through screw threads for fastening respectively with quaterfoil to be connected with the second vertical shaft.
Further, transmission case two sides are symmetrically arranged with connection frame, and connection frame end is provided with hollow installation spherical shell,
Connection frame is internally provided with drive rod, and the first vertical shaft and the second vertical shaft, which respectively correspond, to be protruded into installation spherical shell and engage with drive rod
Transmission, the first vertical shaft and the second vertical shaft are cooperated with installation spherical shell by rolling bearing respectively.
Further, installation spherical shell opens up jagged far from the end of connection frame, which extends to installation spherical shell
Hollow space.
Further, the first vertical shaft and the second vertical shaft lower part are equipped with bevel gear, and the end of drive rod is correspondingly provided with phase
The bevel gear of cooperation, the first vertical shaft and the second vertical shaft pass through bevel gear engaged transmission with drive rod respectively.
Further, the speed ratio of bevel gear is 1 on the first vertical shaft and bevel gear on the second vertical shaft and drive rod:
(1-2.5)。
Further, the speed ratio of bevel gear is 1:1 on the first vertical shaft and bevel gear on the second vertical shaft and drive rod.
3. beneficial effect
Using technical solution provided by the invention, compared with prior art, there is following remarkable result:
(1) a kind of power transmission unit for wind-power electricity generation of the invention, including transmission case and it is respectively arranged at transmission
The blade of case two sides, the blade of every side include that two panels is centrosymmetric the S-shaped blade of distribution, and twayblade design transmitting is bigger
Torque improves wind energy utilization, and leaf quality is distributed symmetrically in rotation axis, and mass center is located on rotation axis, blade rotation
Original state can be returned to, because can satisfy the requirement of the identical and radial self-balancing of blade running track；S-shaped blade is not changing
On the basis of original front face area, make blade vertical shaft two sides windward side coefficient of air resistance that there is certain difference, there is a level pressure
Power is poor, and then reduces blade rotation resistance, improves wind energy utilization.
(2) a kind of power transmission unit for wind-power electricity generation of the invention, connection frame end is provided with hollow installation
Spherical shell, and install spherical shell opened up far from the end of connection frame it is jagged, the notch extend to installation spherical shell hollow space so that
Opening is formed in installation spherical shell end, hollow structure realizes integrally-built light-weight design, and the setting of notch is convenient for transmission
The installation and removal of gear.
(3) a kind of power transmission unit for wind-power electricity generation of the invention, the first vertical shaft and the second vertical shaft respectively with peace
It fills spherical shell to cooperate by rolling bearing, reduce because of influence of the air drag to vertical shaft reliability in the presence of processing and installation error.
(4) a kind of power transmission unit for wind-power electricity generation of the invention, double sigmoid blade rotate stabilization with higher
Property, under certain wind speed and certain load, blade is rotated with certain angular speed, adds revolving speed if there is certain interference
Greatly, zone of positive pressure reduces and negative pressuren zone increases, and the driving moment of wind pressure declines immediately, generates the negative acceleration for main shaft, suppression
The trend of blade acceleration is made；Revolving speed is set to become smaller, whereas if there is certain interference, negative pressuren zone reduces and zone of positive pressure increases, wind
The driving moment of pressure increases immediately, generates the positive acceleration for main shaft, it is suppressed that the trend that blade slows down, therefore have and turn
Dynamic self-stable characteristic can destroy to avoid caused by wind energy conversion system overspeed rotation.
(5) a kind of wind generator system of the invention, the rotational angular velocity of blade is directly proportional to wind speed, energy fast and stable,
Stability is preferable；And adopt and be bolted connection between blade and vertical shaft, it is easy to disassemble, so that when wind speed is too strong, it can be quickly
Dismantle protection system.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of power transmission unit for wind-power electricity generation of the invention；
Fig. 2 is a kind of structural schematic diagram of power transmission unit for wind-power electricity generation of the invention；
Fig. 3 is a kind of left view structural representation of power transmission unit for wind-power electricity generation of the invention；
Fig. 4 is a kind of schematic view of the front view of power transmission unit for wind-power electricity generation of the invention；
Fig. 5 is a kind of overlooking structure diagram of power transmission unit for wind-power electricity generation of the invention；
Fig. 6 is the Computing Principle schematic diagram of middle period each spot speed of on piece of the invention；
Blade surface pressure distribution schematic diagram when Fig. 7 is wind speed 5m/s in the present invention；
Blade surface pressure distribution schematic diagram when Fig. 8 is wind speed 10m/s in the present invention；
Blade surface pressure distribution schematic diagram when Fig. 9 is wind speed 15m/s in the present invention；
Blade surface pressure distribution schematic diagram when Figure 10 is wind speed 20m/s in the present invention；
Figure 11 is the electricity-generating method schematic diagram of wind generator system in the present invention.
Label declaration in schematic diagram:
100, rack；200, transmission case；210, connection frame；220, spherical shell is installed；230, notch；240, drive rod；
310, the first vertical shaft；320, the first blade；330, the second blade；340, the first accessory lobes；350, the second accessory lobes；360,
First cuts leaf；370, second leaf is cut；
410, the second vertical shaft；420, third blade；430, quaterfoil；440, third accessory lobes；450, the 4th accessory lobes；460,
Third cuts leaf；470, the 4th leaf is cut；500, through-hole.
Specific embodiment
To further appreciate that the contents of the present invention, in conjunction with attached drawing, the present invention is described in detail.
In the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" be based on the orientation or positional relationship shown in the drawings, merely to
Convenient for description the present invention and simplify description, rather than the device or element of indication or suggestion meaning must have a particular orientation,
It is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.In addition, term " first ", " second ",
" third " is used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
The present invention will be further described with reference to the examples below.
Embodiment 1
As shown in Figure 1-Figure 11, a kind of power transmission unit for wind-power electricity generation of the present embodiment, including transmission case 200
With the blade for being respectively arranged at 200 two sides of transmission case, the blade of every side includes vertical shaft, the two sides central symmetry distribution of vertical shaft
Having section is the blade of S-shaped, and vertical shaft lower part is connected by gear drive with transmission case 200.The power transmission unit of the present embodiment
It is power converting transmission unit important in wind generator system, power is transmitted to generator unit by the unit, it is final to drive
Dynamic generator unit rotation, converts wind energy into electric energy.The wind generator system further includes rack 100 and generator unit,
Middle transmission case 200 is set to 100 top of rack, and 100 side of rack is then provided with generator unit, and rack 100 and power generation
By Helical gear Transmission between machine unit, also by gear drive between transmission case 200 and rack 100.In use, blade strut rail
On the access of air-flow, rear biggish pressure difference forms resistance to air-flow in front of the blade, pushes blade rotation, the blade rotation of two sides
Corresponding to pass through two pairs of Bevel Gear Transmissions to transmission case 200, then transmission case 200 passes through gear drive to rack 100, then through a pair
Helical gear imparts power to generator unit (i.e. generator), generator unit rotation is driven, so that wind energy is converted into electricity
Energy.It is provided with transmission mate gear in transmission case 200, rack 100 and generator unit, is driven by cooperating between gear
Realize power transmission.Blade in the present embodiment, transmission case 200, rack 100 and generator unit internal gear be driven installation
Conventional installation techniques in industry can be used in setting, and this will not be detailed here.
The power transmission unit of the present embodiment, the blade of the every side of transmission case 200 include that two panels is centrosymmetric distribution
S-shaped blade, twayblade design transmitting more large torque, improve wind energy utilization.Specifically, blade construction is formed in the present embodiment
Wind energy conversion system, the wind energy conversion system are designed using half-rotating mechanism principle, i.e., blade turns around same as transmission device (transmission case 200) is public
Shi Benshen rotation half-turn.Blade includes the first vertical shaft 310 and the second vertical shaft for being set to 200 two sides of transmission case in the present embodiment
410, as shown in Figure 1, the two sides of the first vertical shaft 310 are respectively equipped with the first blade 320 and the second blade 330, and the first blade 320
It is centrosymmetric distribution with the second blade 330 around the first vertical shaft 310；The two sides of second vertical shaft 410 are respectively equipped with third blade 420
With quaterfoil 430, and third blade 420 and quaterfoil 430 are centrosymmetric distribution around the second vertical shaft 410；First blade
320, the section of the second blade 330, third blade 420 and quaterfoil 430 is S-shaped, and forms center pair rotating around vertical shaft
Claiming structure, Mass Distribution is symmetrical with rotation axis, and mass center is located on rotation axis, and blade rotation can return to original state, because
And it can satisfy the requirement of the identical and radial self-balancing of blade running track.S-shaped blade is in the base for not changing original front face area
On plinth, make blade vertical shaft two sides windward side coefficient of air resistance that there is certain difference, have certain pressure poor, and then reduces blade
Rotation resistance improves wind energy utilization.
As shown in Figure 1, be in vertical distribution between the blade of 200 top two sides of transmission case in the present embodiment under original state,
The wind-force of all directions can be efficiently used, improve wind energy utilization；And 200 two sides of transmission case are symmetrically set in the present embodiment
It is equipped with connection frame 210, as shown in figure 3,210 end of connection frame is provided with hollow installation spherical shell 220, and it is remote to install spherical shell 220
End from connection frame 210 opens up jagged 230, which extends to the hollow space of installation spherical shell 220, so that pacifying
It fills 220 end of spherical shell and forms opening, 210 inner hollow of connection frame and be internally provided with drive rod 240, the first vertical shaft 310 and the
Two vertical shafts 410 respectively correspond protrude into installation spherical shell 220 and with the engaged transmission of drive rod 240, the first vertical shaft 310 and the second vertical shaft
410 respectively with installation spherical shell 220 by rolling bearing cooperate, reduction because in the presence of processing and installation error air drag to vertical shaft
The influence of reliability.Hollow structure in the present embodiment realizes integrally-built light-weight design, and the setting of notch 230 is convenient for
The installation and removal of transmission gear.Specifically, the first vertical shaft 310 and 410 lower part of the second vertical shaft are equipped with bevel gear, drive rod
240 end is correspondingly provided with the bevel gear matched, and the first vertical shaft 310 and the second vertical shaft 410 pass through cone with drive rod 240 respectively
Gear engaged transmission；That is the first blade 320 is arranged in 310 top of the first vertical shaft and the second blade 330,310 lower part of the first vertical shaft are worn
The lower arcuate wall of installation spherical shell 220 is crossed, and the lower arcuate wall cooperation respectively by rolling bearing and installation spherical shell 220 is solid
Fixed, the first vertical shaft 310, which is located on the part of installation 220 hollow region of spherical shell, is provided with bevel gear, corresponding drive rod
The bevel gear of cooperation is provided on 240, the structure of the second vertical shaft 410 is same as above, and on the first vertical shaft 310 and the second vertical shaft 410
The speed ratio of bevel gear is 1:1 on bevel gear and drive rod 240.Corresponding transmission is provided in transmission case 200 and rack 100
Gear, the rotation of the rotation synchronous drive drive rod 240 of vertical shaft, the inner section that then drive rod 240 is located at transmission case 200 are also set
There is gear, which is meshed transmission with the gear in rack 100, the rotation of drive rod 240 successively can be passed to transmission
Case 200 and rack 100, and be ultimately transferred to generator unit and generate electricity.
Blade in the present embodiment forms shaft resistance type windmill, rotates under the pressure effect of wind, wind pressure depend on wind with
The relative velocity of blade.The speed for being illustrated in figure 6 any point on blade is calculated in the component of blade normal direction, and AB is one in Fig. 6
A blade, O are main shafts, and OC is half pivoted arm, and OC=R establishes S axis on blade AB, and direction BA, origin is C point, by partly making a connection
The characteristics of structure, knows that the intersection point H point for the circle that the straight line where blade and radius are OC is a fixed point.When pivoted arm OC is from horizontal position
It sets and turns over counterclockwiseWhen angle, blade AB is turned over from upright position is equidirectionalAngle, wind direction and the positive angle of conventional shaft Y-axis are
θ.If the angular speed of blade is ω, known by the characteristics of half-rotating mechanism, angular velocity vector Ω=2 ω of pivoted arm OC.Blade is plane motion,
Its instantaneous center of velocity is the other end P point of diameter where CO, and blade moving distance is s, and the speed V of any point D is in blade on blade
The component V of normal directionnAre as follows:
Therefore
Double sigmoid blade rotates stability with higher, under certain wind speed and certain load, leaf in the present embodiment
Piece is rotated with certain angular speed, increases revolving speed if there is certain interference, S0(S0It is exactly zone of positive pressure and negative pressuren zone on blade
Separation coordinate, S0Size decide the stress condition of blade, also determine the working condition of wind energy conversion system) can subtract therewith
Small, zone of positive pressure reduces and negative pressuren zone increases, and the driving moment of wind pressure declines immediately, generates the negative acceleration for main shaft, suppression
The trend of blade acceleration is made；Revolving speed is set to become smaller, whereas if there is certain interference, S0Can increase with it, negative pressuren zone reduce and
Zone of positive pressure increases, and the driving moment of wind pressure increases immediately, generates the positive acceleration for main shaft, it is suppressed that blade slowed down becomes
Gesture, therefore, the wind energy conversion system in the present embodiment have the self-stable characteristic of rotation, can break to avoid caused by wind energy conversion system overspeed rotation
It is bad.
Stabilized (steady-state) speed is also kept when unloaded in the present embodiment, the S in stable rotation0< 0 is not in, once occur
S0The case where 0 < (i.e. wind energy conversion system revolving speed is larger,U refers to generator voltage), wind energy conversion system meeting automatic retarding, untilUntil, S at this time0=0.On the other hand, if there is S0> 0 the case where (i.e. wind energy conversion system revolving speed is smaller,When),
Wind energy conversion system can be automatically speeded up, untilUntil, also there is S at this time0=0.In S0When=0, without the sky of any damping loss
Carrying ideal wind energy conversion system can remain a constant speed rotation, therefore under certain wind speed, stabilized (steady-state) speed when ideal wind energy conversion system zero loadTo sum up, under certain wind speed, maximum (top) speed, will occur in when wind energy conversion system zero loadAnd this revolving speed is steady
Fixed.
Output revolving speed in the present embodiment through the analytical calculation wind energy conversion system in 50-80rpm (wind speed is 2 meter per seconds) can be protected
The output rated power for demonstrate,proving generator unit is 0.5KW/h, and the selection (by taking 0.5KW and 100w as an example) of generator unit is optional
Rare earth permanent magnet 500W generator or 100W micro permanent magnet electricity generator are selected, there is ultralow staring torque, compact-sized, small in size, again
Amount is light, the features such as running smoothly, is high-efficient, is easy to install, just safeguarding.
Wind energy conversion system in the present embodiment when twayblade is placed in the flow field that wind speed is Vw, and wind energy conversion system transforms wind energy into machinery
Can, according to following wind energy utilization calculation formula and parameter, the wind energy utilization η practical proof that can calculate the wind energy conversion system exists
Between 30%-80%, being obviously improved 6 percent points than traditional, wherein M moree1For blade output torque, Vw refers to wind speed, ρ
Refer to atmospheric density, Sw refers to blade in the projected area for dividing vertical velocity direction.
Wind energy conversion system frictional resistance moment is smaller in the present embodiment, and threshold wind velocity is small, and vane stress is more uniform, structure it is simple and
Long service life, and generator unit may be mounted at pylon low side side it is convenient to install and maintain, it is at low cost high-efficient, and this
The steering engine for adjusting blade angle is additionally provided in embodiment on the bottom of rack 100, steering engine can adjust blade and locate always
In direction windward, start convenient for wind energy conversion system, improves wind energy utilization；Wind energy conversion system in the present embodiment may be also used in street lamp, family
It is widely used with, power plant etc..
The wind generator system threshold wind velocity of the present embodiment is small, under gentle breeze (wind scale 1, wind speed 1-1.5m/s)
Normal starting running, and the setting of steering engine, can control blade initial position, and the moment keeps the blade of side being parallel to fuselage
While it is vertical with wind direction so that sensitivity is higher；The rotational angular velocity of blade is directly proportional to wind speed, and energy fast and stable is stablized
Property is preferable；It adopts and is bolted connection between blade and vertical shaft, it is easy to disassemble, so that when wind speed is too strong, it can fast quick-detach guarantor
Protecting system；Wind energy conversion system uses the rotation of the Wei Sifu effect realization blade of half-rotating mechanism, blade crosspiece on the access of air-flow, gas
Rear biggish pressure difference forms resistance to stream in front of the blade, pushes blade rotation.
Surface pressure distribution of the blade under different wind speed and boundary condition calculates respectively such as Fig. 7-Figure 10 in the present embodiment
It is shown, it can be analyzed according to the calculated result under different wind speed and boundary condition, blade is calculated according to pressure-plotting
Spin velocity, the revolving speed of transmission case 200 is obtained, so that the input speed of generator unit is calculated, according to input speed
Select the model of generator.
A kind of wind power generation method of the present embodiment, as shown in figure 11, using wind generator system as described above, according to
Following steps generate electricity:
Step 1: pneumatic equipment bladess crosspiece is on current path, air-flow in front of the blade after pressure difference form resistance, push
Blade rotation；
Step 2: blade rotation is by gear drive to transmission case 200, transmission case 200 is by gear drive to rack
100；
Step 3: rack 100, by gear drive to generator unit, generator unit generates electricity, transforms wind energy into
For electric energy.
Embodiment 2
A kind of power transmission unit for wind-power electricity generation of the present embodiment, basic structure is with embodiment 1, further
Ground, blade further includes back blades in the present embodiment, specifically, 310 two sides of the first vertical shaft is provided with the first accessory lobes 340 and second
Accessory lobes 350, the first accessory lobes 340 and the second accessory lobes 350 are arc shaped blade and the two at 310 two sides formation center pair of the first vertical shaft
The arc-shaped recess section of the S-shaped structure of title, the arc-shaped recess direction of the first accessory lobes 340 and the first blade 320 close to the first vertical shaft 310
It is oppositely arranged, the arc-shaped recess direction of the second accessory lobes 350 is with the second blade 330 close to the arc-shaped recess section phase of the first vertical shaft 310
To setting, i.e., as shown in orientation in Fig. 2, the S-shaped blade of the first blade 320 is convex to the right close to the segmental arc of the first vertical shaft 310
Out, the S-shaped blade of the second blade 330 protrudes to the left close to the segmental arc of the first vertical shaft 310, correspondingly, first
Accessory lobes 340 are the segmental arcs protruded to the left, and the second accessory lobes 350 are the segmental arcs protruded to the right；And first accessory lobes 340 gradually to leaning on
The direction of nearly first blade 320 extends outwardly, the length that extends outwardly (the linear width distance i.e. between both ends) of the first accessory lobes 340
Extend outwardly the 1/5-1/3 of length for the first blade 320, the second accessory lobes 350 are gradually outside to the direction close to the second blade 330
Extend, the length that extends outwardly of the second accessory lobes 350 is that the second blade 330 extends outwardly the 1/5-1/3 of length, the first accessory lobes 340
It is not more than the segmental arc curvature of the first blade 320 and the second blade 330 with the curvature of the second accessory lobes 350.
Similarly, the two sides of the second vertical shaft 410 are provided with third accessory lobes 440 and the 4th accessory lobes 450,440 He of third accessory lobes
4th accessory lobes 450 are that arc shaped blade and the two in 410 two sides of the second vertical shaft form centrosymmetric S-shaped structure, third accessory lobes
Arc-shaped recess section of the 440 arc-shaped recess direction with third blade 420 close to the second vertical shaft 410 is oppositely arranged, the 4th accessory lobes 450
Arc-shaped recess section of the arc-shaped recess direction with quaterfoil 430 close to the second vertical shaft 410 be oppositely arranged, third accessory lobes 440 by
Gradually extend outwardly to the direction close to third blade 420, the 4th accessory lobes 450 are gradually outside to the direction close to quaterfoil 430
Extend, the length that extends outwardly of third accessory lobes 440 is that third blade 420 extends outwardly the 1/5-1/3 of length, the 4th accessory lobes 450
The length that extends outwardly be that quaterfoil 430 extends outwardly the 1/5-1/3 of length, the song of third accessory lobes 440 and the 4th accessory lobes 450
Rate is not more than the segmental arc curvature of third blade 420 and quaterfoil 430.The present embodiment is facilitated by setting accessory lobes structure
Wind energy utilization is further increased, accessory lobes and the formation of close blade arc section gradually taper up region, helps to store air-flow shape
At vortex, aeolian thrust is improved, keeps blade rotation more longlasting, and accessory lobes setting facilitates multidirectional promotion blade rotation, wind direction turns
Also balance and stability rotation is able to maintain when change, wind energy utilization is higher.
The speed ratio of bevel gear on bevel gear and drive rod 240 in the present embodiment on the first vertical shaft 310 and the second vertical shaft 410
It is 1:2.
Embodiment 3
A kind of power transmission unit for wind-power electricity generation of the present embodiment, basic structure is with embodiment 2, further
Ground, blade further includes Qie Ye in the present embodiment, specifically, a lateral edge short transverse of first blade 320 far from the first vertical shaft 310
It is provided with first and cuts leaf 360, the second blade 330 is provided with second far from a lateral edge short transverse of the first vertical shaft 310 and cuts leaf
370, first cut leaf 360 to close to the first accessory lobes 340 direction inclination extend, and with the opposed, inwardly directed contraction of the first accessory lobes 340, and
First cuts leaf 360 is gradually reduced along the direction thickness far from the first blade 320, and first cuts the top of leaf 360 along far from first
The direction of blade 320 tilts down extension, and the first bottom end for cutting leaf 360 tilts upwards along the direction far from the first blade 320 prolongs
It stretches；Similarly, second direction inclination extension of the leaf 370 to close second accessory lobes 350 is cut, and opposed, inwardly directed with the second accessory lobes 350
It shrinks, second cuts leaf 370 is gradually reduced along the direction thickness far from the second blade 330, and second cuts the top of leaf 370 along separate
The direction of second blade 330 tilts down extension, second cut the bottom end of leaf 370 along the direction direction far from the second blade 330 to
Upper inclination extends.
Similarly, third blade 420 far from a lateral edge short transverse of the second vertical shaft 410 is provided with third in the present embodiment
Leaf 460 is cut, quaterfoil 430 is provided with the 4th far from a lateral edge short transverse of the second vertical shaft 410 and cuts leaf 470, and third cuts leaf
460 tilt to the direction close to third accessory lobes 440 and extend, and with the opposed, inwardly directed contraction of third accessory lobes 440, and third cuts leaf 460
It is gradually reduced along the direction thickness far from third blade 420, and third cuts the top of leaf 460 along the side far from third blade 420
Extend to tilting down, the bottom end that third cuts leaf 460 tilts extension along the direction far from third blade 420 upwards；4th cuts leaf
470 tilt to the direction close to the 4th accessory lobes 450 and extend, and with the opposed, inwardly directed contraction of the 4th accessory lobes 450, and the 4th cuts leaf 470
It is gradually reduced along the direction thickness far from quaterfoil 430, and the 4th cuts the top of leaf 470 along the side far from quaterfoil 430
Extend to tilting down, the 4th bottom end for cutting leaf 470 tilts extension along the direction far from quaterfoil 430 upwards.The present embodiment
By the way that thickness gradually thin Qie Ye is arranged in blade two sides, leading edge slender lobule is formed in blade two sides, easily incision air-flow, make running resistance
It is smaller, kinetic energy conversion is improved, wind energy utilization efficiency is higher, and Qie Ye and corresponding accessory lobes match, and forms phase in blade two sides
To the region of contraction, be conducive to be further formed air-flow vortex, promote blade rotation, improve wind energy utilization.In the present embodiment
First blade 320, the second blade 330, third blade 420 and quaterfoil 430 also respectively along far from vertical shaft direction thickness by
Gradual change is thin, is gradual change type thin wing structure, and when rotation can preferably cut air-flow, reduce resistance, improves wind energy utilization.
The speed ratio of bevel gear on bevel gear and drive rod 240 in the present embodiment on the first vertical shaft 310 and the second vertical shaft 410
It is 1:2.5.
Embodiment 4
A kind of power transmission unit for wind-power electricity generation of the present embodiment, basic structure is with embodiment 3, further
Ground, the present embodiment middle period on piece also uniform intervals offer through-hole 500, as shown in figure 4, specifically, arc of the blade close to vertical shaft
Uniform intervals are provided with through-hole 500 in shape section, i.e. the first blade 320 and the second blade 330 are in the arc close to the first vertical shaft 310
Through-hole 500 is opened up in shape section；Third blade 420 and quaterfoil 430 open up on the segmental arc close to the second vertical shaft 410 logical
Hole 500.The aperture size of thickness direction through-hole 500 in the present embodiment along blade is gradual change, specifically, on every blade
Two kinds of reversed gradual change holes are arranged in even interval, along the aperture of the same thickness direction through-hole 500 of blade is tapered or flaring, i.e., every
Multiple row through-hole 500 is offered along short transverse on blade, the aperture gradual change direction of the through-hole 500 of adjacent column is opposite, through-hole
500 gradual change type design enable air-flow by when there is width to be accelerated to narrow, increase energy-flux density, realization negative-pressure ejecting,
Kinetic energy conversion is further enhanced, wind energy utilization is improved, and through-hole 500 is provided in the blade arc section of accessory lobes, with pair
It is more preferable that leaf matches effect；The reversed through-hole 500 of multiple row is designed then to be able to achieve and be utilized to the equilibrium of the wind flow of all directions.
Schematically the present invention and embodiments thereof are described above, description is not limiting, institute in attached drawing
What is shown is also one of embodiments of the present invention, and actual structure is not limited to this.So if the common skill of this field
Art personnel are enlightened by it, without departing from the spirit of the invention, are not inventively designed and the technical solution
Similar frame mode and embodiment, are within the scope of protection of the invention.
Claims (8)
1. a kind of power transmission unit for wind-power electricity generation, it is characterised in that: including transmission case (200) and be respectively arranged at biography
The blade of dynamic case (200) two sides, the blade of every side include vertical shaft, and it is S-shaped that section, which is distributed with, in the two sides central symmetry of vertical shaft
Blade, vertical shaft lower part is connected by gear drive with transmission case (200).
2. a kind of power transmission unit for wind-power electricity generation according to claim 1, it is characterised in that: blade includes setting
It is placed in first vertical shaft (310) and the second vertical shaft (410) of transmission case (200) two sides, the two sides of the first vertical shaft (310) are respectively equipped with
First blade (320) and the second blade (330), and the first blade (320) and the second blade (330) are in around the first vertical shaft (310)
Central symmetry distribution；The two sides of second vertical shaft (410) are respectively equipped with third blade (420) and quaterfoil (430), and third leaf
Piece (420) and quaterfoil (430) are centrosymmetric distribution around the second vertical shaft (410)；First blade (320), the second blade
(330), the section of third blade (420) and quaterfoil (430) is S-shaped.
3. a kind of power transmission unit for wind-power electricity generation according to claim 2, it is characterised in that: the first blade
(320) it is connected respectively by screw threads for fastening with the first vertical shaft (310) with the second blade (330), third blade (420) and the 4th leaf
Piece (430) is connected by screw threads for fastening with the second vertical shaft (410) respectively.
4. a kind of power transmission unit for wind-power electricity generation according to claim 2, it is characterised in that: transmission case
(200) two sides are symmetrically arranged with connection frame (210), and connection frame (210) end is provided with hollow installation spherical shell (220), connection
Frame (210) is internally provided with drive rod (240), and the first vertical shaft (310) and the second vertical shaft (410) respectively correspond and protrude into installation spherical shell
(220) in and with drive rod (240) engaged transmission, the first vertical shaft (310) and the second vertical shaft (410) respectively with spherical shell is installed
(220) cooperated by rolling bearing.
5. a kind of power transmission unit for wind-power electricity generation according to claim 4, it is characterised in that: installation spherical shell
(220) end far from connection frame (210) opens up jagged (230), which extends in installation spherical shell (220)
Empty part.
6. a kind of power transmission unit for wind-power electricity generation according to claim 4, it is characterised in that: the first vertical shaft
(310) and the second vertical shaft (410) lower part is equipped with bevel gear, and the end of drive rod (240) is correspondingly provided with the bevel gear matched,
First vertical shaft (310) and the second vertical shaft (410) pass through bevel gear engaged transmission with drive rod (240) respectively.
7. a kind of power transmission unit for wind-power electricity generation according to claim 6, it is characterised in that: the first vertical shaft
(310) and on the bevel gear on the second vertical shaft (410) and drive rod (240) speed ratio of bevel gear is 1:(1-2.5).
8. a kind of power transmission unit for wind-power electricity generation according to claim 7, it is characterised in that: the first vertical shaft
(310) and on the bevel gear on the second vertical shaft (410) and drive rod (240) speed ratio of bevel gear is 1:1.
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| CN201810785010.9A CN108953059B (en) | 2018-07-17 | 2018-07-17 | A kind of power transmission unit for wind-power electricity generation |
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| CN201810785010.9A CN108953059B (en) | 2018-07-17 | 2018-07-17 | A kind of power transmission unit for wind-power electricity generation |
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| CN108953059B (en) | 2019-08-09 |
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