CN207701280U - A kind of airfoil wind sail and wind turbine of adaptive liter of resistance regulation - Google Patents
A kind of airfoil wind sail and wind turbine of adaptive liter of resistance regulation Download PDFInfo
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- CN207701280U CN207701280U CN201721175976.8U CN201721175976U CN207701280U CN 207701280 U CN207701280 U CN 207701280U CN 201721175976 U CN201721175976 U CN 201721175976U CN 207701280 U CN207701280 U CN 207701280U
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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
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Abstract
The utility model discloses a kind of airfoil wind sails of adaptive liter of resistance regulation comprising a section is in the airfoil wind sail main body of air foil shape；Inside every group of winglet-type sail, it is provided with the unilateral conducting type air jet channel of " Y " font；In " Y " font air jet channel, one is additionally provided in response to wind direction, wind speed and the flow-rate adjustment gate in automatic opening/closing control section；The control valve, according to the different wind directions and wind speed of sail incoming, accordingly voluntarily regulating gate opening degree, opening and closing cross-sectional sizes, to adjust the air mass flow and flow velocity in air jet channel, make the angle of attack accordingly change to come, to automatically adjust the lift and resistance to airfoil wind sail when wind speed changes.The invention also discloses the vertical shaft fans using above-mentioned airfoil wind sail, increase wing sail wind catching area and form the resultant force of best circumferential movement, improve the wind energy utilization of wing sail.
Description
Technical field
The utility model is related to technical field of wind power generating equipment more particularly to a kind of aerofoil profiles of adaptive liter of resistance regulation
Sail and wind turbine.
Background technology
The appearance of vertical axis aerogenerator solves horizontal axis wind-driven generator in defect physically, however such as
It is still the key problem for driving wind-powered electricity generation further to develop that, which increases wind catching area and improves wind energy utilization,.
The existing vertical shaft fan with airfoil wind sail is disposed with multiple on the annular operating platform of rotatable movement
Airfoil wind sail blade increases wind catching area, it can be achieved that from all angles capture wind energy.
The sail of traditional airfoil structure has catches wind energy power well, but cannot overcome its frontal resistance.And punching jetting
Formula airfoil wind sail not only maintains the characteristics of airfoil wind sail energy large area catches wind, the nose inlet group of sail, aerofoil air flue
The design of array group also significantly reduces the frontal resistance of airfoil wind sail, and is to sail head by its resistance cooperative direction
The resultant force of advance, greatly strengthen airfoil wind sail catches wind energy power.
Attached drawing 1 is referred to, ramjet type airfoil wind sail in the prior art is the work original for using jet-propelled wing
Reason.Good wing should be able to generate prodigious lift and the resistance of very little, and have enough intensity and rigidity, it is not easy to deform
And it is easy to control.Determine that there are many factor of wing generation lift size, it is directly related with wing area, speed etc., but this
A little factors often can not or be not easy to change, as atmospheric density cannot change；Wing two accumulates, usually by physical limit；Institute
The speed for locating the air incoming in environment is uncontrolled.Therefore, to increase lift can only be realized by increasing lift coefficient.
It is also in this way, mainly trying to reduce the resistance coefficient that wing generates in terms of reducing wing drag.Determine airfoil lift coefficient and
Resistance coefficient is Airfoil Sections shape (i.e. aerofoil profile), wing planform and the angle of attack at that time.Good aerofoil profile can be same
The angle of attack under have a larger lift coefficient and smaller resistance coefficient, the ratio (claiming lift resistance ratio) of both coefficients can reach 18 with
On.
Due to airfoil wind sail leading edge windward when wind energy utilization it is maximum, sail at other angles windward when wind energy utilization
It decreases, but this airfoil wind sail can not make under the different wind speed and direction angles of attack and be adaptively adjusted, so its entirety
Wind energy utilization it is relatively low.
Chinese utility model ZL 201080047198.9 discloses a kind of floating sail wind power generator of water, passes through setting
The design of aerofoil air flue array group improves lift resistance ratio, is the multiple ramjet type wings for turning to be arranged on platform in water transportation by driving
Type sail is the carrier that water floats that sail wind power generator catches wind acquisition wind energy.Each pressing jet type wing sail all includes wind
Sail head, sail tail portion, positioned at sail head 3 nose inlet group, be located at the aerofoil air flue battle array of two aerofoils of sail
Row group.Wherein, nose inlet group is made of the serial air inlet road junction for being distributed in sail head；Aerofoil air flue array group is point
It is not made of the serial aerofoil multipole gas port for being distributed in two aerofoils of sail.Nose inlet mouth, the aerofoil of above-mentioned series
Multistage gas port forms jet stream air flue in the inside of ramjet type airfoil wind sail.It is evenly distributed on water transportation by driving and turns and be on platform
Row pressing jet type wing sail has the different angles of attack of wind good in the horizontal circular movement of each different directions
The cooperative direction to travel forward.
But the above-mentioned prior art can not solve the problems, such as it is as follows：
1, single airfoil wind sail cannot be made according to the wind direction of air-flow, wind speed, wind-force size in residing wind field, it is synchronous to carry out certainly
The flow conductivity for adapting to adjustment jet stream road, to obtain maximum lift resistance ratio and form the resultant force of best circumferential movement；
2, cannot be coordinated by the fluidic channel cross sectional shape of each airfoil wind sail, quantity, according to gas in its residing wind field
Situation is flowed, adaptivity adjusting respectively is carried out to its fluidic channel, to obtain maximum lift resistance ratio and form best circumferential fortune
Dynamic resultant force；
3, the automatic adjusument of fluidic channel is needed according to certain regularity control, could obtain maximum lift resistance ratio,
And form the resultant force of best circumferential movement；
4, quantity, the position of single airfoil wind sail are not accounted for how laying, and it is adaptive so that each airfoil wind sail is carried out
Property adjust, make the entire wind turbine of multiple sails composition, reach the resultant force of best circumferential movement.
Therefore, how to make each airfoil wind sail, according in residing wind field direction and wind speed, by being made to self structure
It synchronizes, be flexibly adaptively adjusted, obtain maximum lift resistance ratio, and then obtain best circular motion and be oriented to resultant force, make wind energy
Utilization rate reaches maximum, it is still desirable to carry out in-depth study.
Utility model content
The technical problem to be solved by the present invention is to for the above-mentioned scarce deficiency of the prior art, provide a kind of adaptive
The airfoil wind sail of resistance regulation should be risen, is had under different wind speed through regulating gate opening degree to improve airfoil wind sail
Wind energy utilization and the angle of attack change using wind to the lift and resistance of airfoil wind sail come the characteristics of improving its dynamic characteristics.
The technical problems to be solved in the utility model further includes providing a kind of be made of multiple sails and vertical shaft wind
Machine, by each liter resistance from response to wind speed variation, to reach best circumferential movement resultant force.
Technical solution is as follows used by the utility model solves above-mentioned technical problem：
A kind of airfoil wind sail of the liter resistance regulation of adaptive wind speed variation, which is characterized in that it includes that a section is in the wing
The airfoil wind sail main body of type shape, the main body are equipped with upper cambered surface A, lower camber side B；The airfoil wind sail main body is by multigroup winglet-type wind
Sail splices composition by vertical direction pin connection mode；Inside every group of winglet-type sail, it is horizontally disposed there are one or
It is multiple be used for improve its dynamic characteristics, cross section be in " Y " font unilateral conducting type air jet channel；It should " Y " font runner
Air inlet the leading edge in sail main body is set, two gas outlets are arranged on the upper cambered surface A of sail main body；In the air inlet
Angle between heart line and gas outlet center line is 45 °~60 °；In " Y " font air jet channel, be additionally provided with one because
Answer wind direction, wind speed and the flow-rate adjustment gate in automatic opening/closing control section；The control valve, according to the different wind directions of sail incoming
And wind speed, accordingly voluntarily regulating gate opening degree, opening and closing cross-sectional sizes, to adjust the air mass flow in air jet channel
And flow velocity, so that the angle of attack is accordingly changed to improve its dynamic characteristics, to be automatically adjusted to airfoil wind sail when wind speed changes
Lift and resistance, to obtain maximum lift resistance ratio, and form the resultant force of best circumferential movement, improve wind energy utilization.
The flow-rate adjustment gate is one-way cock, is arranged at air jet road air inlet openings, is only capable of to described
Air jet channel interior direction is opened；And at the air inlet in " Y " font air jet channel of the valve；On the inside of the valve
On face, it is equipped with adaptive, Self-resetting a controller for opening and closing, changing adaptive process function according to wind speed controls the gate
Unlatching section size, which is：
X=F/ (a*cos45 °) (3)
F=Sv2ρ (4)
In formula：
The distance that X --- gate is opened along runner；
Power of F --- the airflow function on gate；
S --- gate sectional area；
V --- air-flow velocity；
ρ --- current density；
Adaptive, Self-resetting the controller for opening and closing is hydraulic pressure support bar or is surrounded with the spring of metal spring
Supporting rod；The hydraulic pressure support bar or spring supporting bar are set in the air jet road, and a T connector is respectively adopted in both ends
It connects on the gate and the runner inner wall.
The open height h and opening width L for forming the inlet, outlet of the fluidic channel should meet：
In formula：
H --- the height of airfoil wind sail blade；
The maximum gauge of c --- airfoil wind sail.
Using the vertical shaft fan of aforementioned airfoil wind sail comprising the annular operating platform of rotatable movement, perpendicular to this
Platform plane edge annular is uniformly distributed multiple airfoil wind sail blades, which is characterized in that make vertical shaft fan obtain most
Good circumferential movement resultant force, airfoil wind sail blade should meet the following conditions：
(1) it is odd number to operate the airfoil wind sail blade quantity arranged on platform；When to avoid wind turbine windward, air-flow from
Gap between adjacent two pieces of blades enters, and is flowed out by diagonal gap, and air-flow forms resistance to the circumferential movement of wind turbine；
(2) the considerations of combining kinetic characteristic and safety factor, the airfoil wind sail blade height H and vertical shaft fan operating
Platform radius R should meet：
0.8H≦R≦H (7)。
Side's airfoil wind sail provided by the utility model, wind turbine have the advantages that：
1. wind catching area is big.The airfoil wind sail is by can be by air-flow to the airfoil wind sail when the different wind of the angle of attack
It generates lift and resistance forms maximum resultant force, the airfoil wind sail is driven to be moved to its leading edge；
2. wind energy utilization is high.The airfoil wind sail is in the low wind speed environments of the unlatching rated wind speed less than the gate
Under, gate is closed completely, and the dynamic characteristics of aerofoil profile, the more conducively described airfoil wind sail is kept to start to the full extent.It is in big
In the environment of opening rated wind speed, according to the opening degree of wind-force size regulating gate, air-flow flows through described hydraulic pressure support bar
The font air jet channel " Y " is simultaneously flowed out from gas outlet, and the effect of propulsive thrust is generated, and superposition windward generates the airfoil wind sail
Lift, while driving its movement, wind energy is converted into the high conversion rate of the kinetic energy of the airfoil wind sail under different wind speed.
3. the vertical shaft fan being made of as blade multiple airfoil wind sails (sum is odd number), can pass through each aerofoil profile wind
Adaptive lift, the resistance that sail obtains in wind field on present position obtain best circumferential movement resultant force.
Description of the drawings
Fig. 1 is the horizontal section cross section structure schematic diagram of airfoil wind sail in the prior art；
Fig. 2 is the monnolithic case structure and group's diagrammatic cross-section of the utility model airfoil wind sail；
Fig. 3 is the sectional top view of the utility model airfoil wind sail；
Fig. 4 is the hydraulic pressure support bar schematic diagram in the utility model airfoil wind sail；
Fig. 5 be the utility model airfoil wind sail leading edge windward when air flow direction schematic diagram；
Fig. 6 be the utility model airfoil wind sail rear windward when air flow direction schematic diagram；
Fig. 7 be on the utility model airfoil wind sail and upper cambered surface AC cambered surface A Low Speed Airfoils the angle of attack be 0 °, wind speed be less than lock
Door opens pressure cloud atlas when rated wind speed；
Fig. 8 be on the utility model airfoil wind sail and upper cambered surface AC cambered surface A Low Speed Airfoils the angle of attack be 0 °, wind speed be higher than lock
Door opens pressure cloud atlas when rated wind speed；
Fig. 9 be on the utility model airfoil wind sail and upper cambered surface AC cambered surface A Low Speed Airfoils the angle of attack is 180 °, wind speed is less than
Pressure cloud atlas when gate opening rated wind speed；
Figure 10 be on the utility model airfoil wind sail and upper cambered surface AC cambered surface A Low Speed Airfoils the angle of attack be 180 °, wind speed it is high
Pressure cloud atlas when gate opening rated wind speed.
Wherein, the label in each portion indicates as follows：1, resistance airfoil wind sail main body is risen；2, main body leading edge 3, main body rear
41, " Y " fonts air jet channel 42, air inlet 43, gas outlet 44, hydraulic pressure support bar 45, gate 46, bar slot 441,
T junction 442, piston rod 443, hydraulic cylinder
Specific implementation mode
To keep the purpose of this utility model, technical solution and advantage clearer, clear, develop simultaneously implementation referring to the drawings
The utility model is further described in example.It should be appreciated that specific embodiment described herein is only used to explain this reality
With novel, it is not used to limit the utility model.
It is provided by the utility model from response to wind speed variation liter resistance airfoil wind sail and and vertical shaft fan, below with
The utility model is described in detail in specific implementation mode：
It refers to shown in Fig. 2-Figure 10, the adaptive airfoil wind sail for rising resistance regulation that the utility model embodiment provides,
The wherein section of the airfoil wind sail main body 1 is in air foil shape, and aerofoil profile is NACA Low Speed Airfoils, code name NACA2413, i.e.,
Aerofoil profile maximum is with respect to camber 2%, the chord length that maximum camber is 40% or so apart from the up-front length of wing chord, and maximum relative thickness is
13%.
A kind of airfoil wind sail of adaptive liter of resistance provided in this embodiment, and its adaptive adjusting method for rising resistance,
It includes the following steps：
(1) the airfoil wind sail main body 1 that four groups of sections being arranged above and below are in air foil shape is set, which is equipped with upper cambered surface
A, lower camber side B；
(2) inside the airfoil wind sail 1, it is horizontally disposed have it is multiple be used for improving its dynamic characteristics, cross section is in " Y " word
The unilateral conducting type air jet channel 41 of type；Should the air inlet of " Y " font runner 41 leading edge 2 in sail main body 1 is set, two
A gas outlet 43 is arranged on the upper cambered surface A of sail main body 1；Between 43 center line of 42 center line of the air inlet and gas outlet
Angle is 45 °~60 °；I.e. air jet channel 41 is a bent channel；
In step (2), the open height h and opening width L that form the inlet, outlet of the fluidic channel should meet：
In formula：
H --- the height of airfoil wind sail blade；
The maximum gauge of c --- airfoil wind sail；
(3) on the inner passage in " Y " font air jet channel 41, setting one is in response to wind direction, wind speed and automatic control
It is opened and closed the flow-rate adjustment gate 45 in section；
The flow-rate adjustment gate 45 of the step (3) is one-way cock, is arranged in the INO Intake Open in air jet road 41
At mouth 42 or 43, it is only capable of opening to 41 interior direction of air jet channel；And " Y " font air jet of the valve 45 is logical
At the air inlet 42 in road 41；On 45 medial surface of valve, it is equipped with adaptive, Self-resetting a controller for opening and closing, according to wind
Speed variation adaptive process function controls the size in the unlatching section of the gate 45, which is：
X=F/ (a*cos45 °) (3)
F=Sv2ρ (4)
In formula：
The distance that X --- gate is opened along runner；
Power of F --- the airflow function on gate；
S --- gate sectional area；
V --- air-flow velocity；
ρ --- current density.
Adaptive, Self-resetting the controller for opening and closing, is hydraulic pressure support bar 44, can also be in other embodiment
It is surrounded with the spring supporting bar of metal spring；The hydraulic pressure support bar or spring supporting bar 44 are set to the air jet road 41
Interior, both ends are respectively adopted a T connector and connect on 41 inner wall of the gate 45 and the runner.
(4) control valve 45 described in, according to the different wind directions and wind speed of sail incoming, accordingly voluntarily regulating gate 45
Opening degree, opening and closing cross-sectional sizes make the angle of attack accordingly become to adjust the air mass flow and flow velocity in air jet channel 41
Change to improve its dynamic characteristics, to automatically adjust the lift and resistance to airfoil wind sail 1 when wind speed changes, to obtain maximum
Lift resistance ratio, and form the resultant force of best circumferential movement, improve wind energy utilization.
Step (4) further includes specifically：
(41) when the airfoil wind sail leading edge 2 windward when, the angle of attack of air-flow and the airfoil wind sail 1 is 0 °, when the wing
Type sail 1 is under the low wind speed environments less than the unlatching rated wind speed of the gate 45, and the gate 45 is closed completely, incoming
Two strands of air-flows are split into the airfoil wind sail leading edge 2, cambered surface A, the faces lower camber side B is flowed separately through, keeps the wing to the full extent
Type structure generates the characteristic of lift, and the airfoil wind sail 1 is contributed to start under low wind speed environments；
(42) when the airfoil wind sail leading edge 2 windward and the wind speed of incoming be more than setting adjusting air speed value when then open,
Air velocity, the flow in air jet channel 41 are automatically adjusted, incoming is made to split into three strands of gas in the airfoil wind sail leading edge 2
Stream flows separately through cambered surface A, the faces lower camber side B, by " Y " font air jet channel 41 described in the entrance of the gate 45；The stock
It is discharged respectively from two gas outlets 43 behind " Y " font air jet channel 41 described in air-flow entrance, to the airfoil wind sail 1
Generate the effect of propulsive thrust；Meanwhile flow through cambered surface A, the faces lower camber side B two strands of air-flows to the airfoil wind sail 1 generate lift,
It is superimposed with the effect of propulsive thrust, while the airfoil wind sail 1 being driven to be moved to its leading edge；
(43) when the airfoil wind sail rear 3 windward when the angle of attack of air-flow and the airfoil wind sail 1 be 180 ° when, incoming
Two strands of air-flows are split into the airfoil wind sail rear 3, flow separately through cambered surface A, the faces lower camber side B；Flow through the gas in the faces cambered surface A
Stream passes through the air inlet 42, and fraction is along " Y " font air jet channel 41 described in the entrance of the air inlet 42；The lock
Door 45 has the unidirectionally property opened, and is only capable of opening to 41 interior direction of " Y " font air jet channel, " Y " font is empty
41 interior air-flow of gas fluidic channel is stopped by the gate 45, is equivalent to the fan blade of resistance-type, the kinetic energy that air-flow has is in institute
It states and is converted into resistance at gate 45；Drag direction is directed toward the airfoil wind sail leading edge 2, drives the airfoil wind sail 1 to its leading edge 2
Movement.
What the utility model embodiment provided changes in response to wind speed, implements above-mentioned adaptive liter of resistance regulation method liter resistance certainly
The airfoil wind sail 1 of power, as shown in Fig. 2, wherein the airfoil wind sail main body 1 passes through vertical direction pin by four groups of winglet-type sails 1
Connection type splicing composition, facilitates processing, dismounting and installation；, can be as needed in other embodiment, what is be specifically laminated is small
The group number of airfoil wind sail 1；
" Y " font air jet channel 41, be by set on the airfoil wind sail leading edge 2 air inlet 42, be set to it is upper
The gas outlet 43 of the sides cambered surface A (the i.e. described airfoil wind sail leading edge windward when negative pressuren zone side) and the stream for connecting air inlet and gas outlet
Road 41 forms；
Preferably, every group of winglet-type sail is both provided with the air inlet 42, gas outlet 43, air inlet 42 and gas outlet 43
Angle between center line is 45 °~60 °, and gas outlet 43 can be arranged 2~4.If oversized, the meeting of the gas port 42,43
Reduce the ability that airfoil wind sail 1 generates lift；It is again unknown to the raising of dynamic characteristics if the gas port 42,43 is undersized
It is aobvious.Therefore, the open height h and opening width L of each air inlet/outlet 42,43 should meet：
In formula：
H --- the height of airfoil wind sail blade；
The maximum gauge of c --- airfoil wind sail.
1 processing sets up of winglet-type sail in the inner " Y " font air jet channel 41 in portion when, can be in sail
Cambered surface is cut-off rule, breaks it into two, is processed out runner 41 using equipment, then two parts are spelled by pin connection mode
It is connected into one group of complete " Y " font air jet channel 41；
The gate 45 is arranged at the air inlet 42 in " Y " font air jet channel, 45 shape of the gate
It coincide with 2 radian of airfoil wind sail leading edge, in the case that the gate 45 is closed, the airfoil wind sail 1 is whole in complete
Aerofoil profile.The gate 45 or tabular.The gate 45 is connect with 41 inner wall of the runner with hinging manner, and articulated shaft
It is arranged on the bottom surface of air inlet 42；
Wherein, the hydraulic pressure support bar 44 is set in the bar slot 46 of 41 inner wall of the runner, is divided using T connector 441
The hydraulic pressure support bar 44 is not fixed on the bar slot 46 and the gate 45 of the runner inner wall.Select the hydraulic pressure branch
442 stroke of piston rod of strut 44 should meet the hydraulic pressure support bar 44 in the case that the gate 45 is closed and be stretched and reach
Range, to realize the unidirectional property opened of the gate 45.Select 443 cylinder of hydraulic cylinder of the hydraulic pressure support bar long, Ying Man
Sufficient hydraulic cylinder by completely set up in the bar slot 46, to realize that the gate 45 can fully open.In other embodiment, hydraulic pressure
Supporting rod 44 can also use spring supporting bar, elastic rubber supporting rod etc. can be voluntarily in response to wind speed variation and self-resetting
Device.
Liter resistance airfoil wind sail 1 provided by the utility model from response to wind speed variation, in different wind directions, different wind speed
Lower pass through adjusts 45 opening degree of gate, the fraction of different flow is made to pass through channel 41, to improve airfoil wind sail 1
Wind energy utilization and the angle of attack change, and lift and resistance of the wind to aerofoil profile wind 1 are improved, to improve its dynamic characteristics.
As shown in figure 4, the airfoil wind sail leading edge 2 windward when air flow direction schematic diagram, wind and the aerofoil profile wind at this time
The angle of attack of sail 1 is 0 °.If the airfoil wind sail 1 is under the low wind speed environments less than the unlatching rated wind speed of the gate 45,
The gate 45 is closed completely, and the airfoil wind sail 1 is in common airfoil structure, and incoming is split into the airfoil wind sail leading edge 2
Two strands of air-flows flow separately through cambered surface A, the faces lower camber side B, and airfoil structure is kept to generate the characteristic of lift originally to the full extent,
The airfoil wind sail 1 is contributed to start under low wind speed environments.In addition, the airfoil wind sail 1, which is in, is higher than the rated wind speed
In the environment of, the hydraulic pressure support bar 44 is according to the opening degree of gate 45 described in the big minor adjustment of wind-force, the gate 45
Open state, incoming split into three strands of air-flows in the airfoil wind sail leading edge 2, other than flowing through upper cambered surface A, the faces lower camber side B, also
By " Y " font air jet channel 41 described in the entrance of the gate 45." Y " font air jet is logical described in this burst of air-flow entrance
It is discharged respectively from two gas outlets 43 behind road 41, the effect of propulsive thrust is generated to the airfoil wind sail 1.Flow through cambered surface A,
Two strands of air-flows in the faces lower camber side B generate lift to the airfoil wind sail 1, are superimposed with the effect of propulsive thrust, while driving the wing
Type sail 1 is moved to its leading edge.
As shown in figure 5, the airfoil wind sail rear 3 windward when air flow direction schematic diagram, wind and the aerofoil profile wind at this time
The angle of attack of sail 1 is 180 °.Incoming splits into two strands of air-flows in the airfoil wind sail rear 3, flows separately through cambered surface A, lower camber side B
Face.The air-flow for flowing through the faces cambered surface A passes through the air inlet 42, and fraction is along " Y " font described in the entrance of the air inlet 42
Air jet channel 41.Since the gate 45 has the unidirectionally property opened, it is only capable of into " Y " font air jet channel 41
It opens.Therefore, 41 interior air-flow of described " Y " font air jet channel is stopped by the gate 45, is equivalent to the wind turbine of resistance-type
Blade, the kinetic energy that air-flow has are converted into resistance at the gate 45.Resistance is directed toward the airfoil wind sail leading edge 2, drives institute
Airfoil wind sail 1 is stated to move to its leading edge.
A kind of vertical shaft fan using above-mentioned airfoil wind sail 1, the liter resistance airfoil wind sail of adaptive wind speed variation, packet
The annular operating platform for including rotatable movement, uniformly distributed has multiple 1 leaves of aerofoil profile wind perpendicular to the platform plane along annular
Piece.Based on the vertical shaft fan of above-mentioned airfoil wind sail 1 (i.e. upper cambered surface A, the sides the lower camber side B gas outlets Jun You shown in Fig. 4), to make
Vertical shaft fan obtains best circumferential movement resultant force, and 1 blade of airfoil wind sail should meet the following conditions：
(1) it is odd number to operate 1 blade quantity of the airfoil wind sail arranged on platform.If being evenly arranged even numbers number
Airfoil wind sail blade, blade necessarily diagonal arrangement two-by-two so that the gap between adjacent two pieces of blades and diagonal gap shape
At straight-through opening runner.Wind turbine windward when, air-flow enters from the gap between adjacent two pieces of blades, by clearance flow between diagonal
Go out, air-flow forms resistance to the circumferential movement of wind turbine.1 blade of aerofoil profile wind turbine of the singular number of arrangement then can be to avoid this feelings
Condition；
(2) the considerations of combining kinetic characteristic and safety factor, 1 blade height H of the airfoil wind sail and vertical shaft fan fortune
Turning platform radius R should meet：
0.8H≦R≦H (7)
The utility model embodiment serves as wind regime using electric fan, simulates above-mentioned vertical shaft fan under normal operation circumstances
Wind-engaging situation, carried out the comparison that multigroup stomata 42,43 about runner 41 is opened and closed the influence to 1 dynamic characteristics of airfoil wind sail
Property experiment.It is below the experiment institute gathered data：
Note：Angle is wind regime center and wind turbine center institute connecting shaft line and incoming angulation
Show that the experiment carries out in the environment of low wind speed by experimental data, in two kinds of incoming rings of the experiment condition
Under border, it is inner flow passage shape and " Y " font air jet described in the utility model channel that 6. preceding hole and lower camber side B side openings, which are closed,
41 shapes are coincide, and the synthesis mean speed measured is 4.96rpm/min, and rotating speed is higher in each group, i.e., its dynamic characteristics is preferable.
The liter resistance airfoil wind sail 1 changed certainly in response to wind speed described in the utility model embodiment, by the above embodiment
Modeling, carries out it using Fluid Mechanics Computation method that cambered surface A Low Speed Airfoils (are called in the following text on cambered surface AC in analog study, with N
YX01 it) compares, to verify the dynamic characteristics of the airfoil wind sail 1.Following analysis is carried out according to analog result：
1. being less than in the environment of the unlatching rated wind speed of gate 45 as shown in fig. 7, being in, 1 near border of the airfoil wind sail
Pressure, flow condition and YX01 it is almost the same.Therefore in the case where gate 45 is closed, the airfoil wind sail 1 windward when produce
The ability of raw lift is close with YX01, can utmostly keep the dynamic characteristics of aerofoil profile；
2. as shown in figure 8, in the environment of opening rated wind speed higher than gate 45, the airfoil wind sail gate 45 is beaten
It opens, air-flow can pass through " Y " font air jet channel 41 from the air inlet 42, reduce the high pressure of aerofoil profile leading edge 2
Area's area, i.e. the airfoil wind sail leading edge 2 windward when the resistance ratios YX01 that generates it is small；
3. as shown in Figure 9, Figure 10, regardless of wind friction velocity, " Y " the font air jet of the airfoil wind sail 1
Pressure is all far above the pressure of the airfoil wind sail leading edge 2, i.e. " Y " font air jet channel described in air-flow entrance in channel 41
41 gates 45 that can be unidirectionally opened stop, are equivalent to the fan blade of resistance-type, and the kinetic energy of air-flow converts at gate 45
For resistance, the airfoil wind sail 1 is driven to be moved to its leading edge 2, and YX01 can not then generate identical resistance.
In summary it is big that lift is generated to the analysis of analog result, when YX01 leading edges 2 be both utilized windward in the utility model
The advantages of, and it has been combined lift and resistance driving displacement, therefore the dynamic characteristics of the utility model is significantly better than
YX01。
In conclusion the above method provided by the utility model, sail and vertical shaft fan, have the characteristics that：
1. wind catching area is big.It, can be by air-flow to the aerofoil profile wind when each airfoil wind sail is by the angle of attack different wind
Sail generates lift and resistance, and the airfoil wind sail is driven to be moved to its leading edge；
2. wind energy utilization is high.Each airfoil wind sail is in the low wind speed environments of the unlatching rated wind speed less than the gate
Under, gate is closed completely, and the dynamic characteristics of airfoil wind sail script, the more conducively described airfoil wind sail is kept to start to the full extent；
In the environment of it is in and is more than and opens rated wind speed, hydraulic pressure support bar according to the opening degree of wind-force size regulating gate, from
The dynamic fraction for adjusting different flow flows through described font air jet channel " Y " and is flowed out from gas outlet, generates propulsive thrust
Effect, the lift that is generated to the airfoil wind sail of superposition windward, while driving its movement is in wind energy transformation under different wind speed
For the high conversion rate of the kinetic energy of the airfoil wind sail.
It should be understood that the application of the utility model is not limited to above-mentioned citing, those of ordinary skill in the art are come
It says, it can be modified or changed according to the above description, and all these modifications and variations should all belong to the appended power of the utility model
The protection domain that profit requires.
Claims (5)
1. a kind of airfoil wind sail of adaptive liter of resistance regulation, which is characterized in that it includes the aerofoil profile that a section is in air foil shape
Sail main body is equipped with upper cambered surface A, lower camber side B；The airfoil wind sail main body passes through vertical direction pin by multigroup winglet-type sail
Connection type splicing composition；Inside every group of winglet-type sail, it is horizontally disposed there are one or it is multiple be used for improving it is dynamic
Force characteristic, cross section are in the unilateral conducting type air jet channel of " Y " font；The air inlet for being somebody's turn to do " Y " font runner is arranged in wind
The leading edge of sail main body, two gas outlets are arranged on the upper cambered surface A of sail main body；The air inlet center line and gas outlet center
Angle between line is 45 °~60 °；In " Y " font air jet channel, be additionally provided with one in response to wind direction, wind speed and from
The flow-rate adjustment gate in control opening and closing section；The control valve, according to the different wind directions and wind speed of sail incoming, accordingly certainly
Row regulating gate opening degree, opening and closing cross-sectional sizes make angle of attack phase to adjust the air mass flow and flow velocity in air jet channel
It should change to improve its dynamic characteristics, to automatically adjust the lift and resistance to airfoil wind sail when wind speed changes.
2. adaptively rising the airfoil wind sail of resistance regulation according to claim 1, which is characterized in that the flow-rate adjustment lock
Door is one-way cock, is arranged at air jet road air inlet openings, is only capable of opening to air jet channel interior direction；
And at the air inlet in " Y " font air jet channel of the valve；On the valve medial surface, it is equipped with an adaptive, Self-resetting
Controller for opening and closing, according to wind speed change adaptive process function control the gate unlatching section size, this is adaptive
Answering procedure function is：
X=F/ (a*cos45 °) (3)
F=Sv2ρ (4)
In formula：
The distance that X --- gate is opened along runner；
Power of F --- the airflow function on gate；
S --- gate sectional area；
V --- air-flow velocity；
ρ --- current density.
3. adaptively rising the airfoil wind sail of resistance regulation according to claim 2, which is characterized in that it is described it is adaptive, from
The controller for opening and closing of reset is hydraulic pressure support bar or is surrounded with the spring supporting bar of metal spring；The hydraulic pressure support bar or
Spring supporting bar is set in the air jet road, and both ends are respectively adopted a T connector and connect in the gate and institute
It states in runner inner wall.
4. adaptively rising the airfoil wind sail of resistance regulation according to claim 1, which is characterized in that it is logical to form the jet stream
The open height h and opening width L of the inlet, outlet in road should meet：
In formula：
H --- the height of airfoil wind sail blade；
The maximum gauge of c --- airfoil wind sail.
5. a kind of vertical shaft fan using one of Claims 1 to 4 airfoil wind sail, which is characterized in that it includes that can revolve
The dynamic annular operating platform of transhipment has multiple airfoil wind sail blades along annular is uniformly distributed perpendicular to the platform plane, should
Airfoil wind sail blade quantity is odd number, and airfoil wind sail blade height H and vertical shaft fan operating platform radius R should meet：
0.8H≦R≦H (7)。
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| CN201721175976.8U CN207701280U (en) | 2017-09-13 | 2017-09-13 | A kind of airfoil wind sail and wind turbine of adaptive liter of resistance regulation |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108412687A (en) * | 2017-09-13 | 2018-08-17 | 东莞理工学院 | A kind of adaptive liter resistance regulation method, sail and the wind turbine of airfoil wind sail |
| CN115432076A (en) * | 2022-09-29 | 2022-12-06 | 同济大学 | Jet flow method for reducing aerodynamic noise of rearview mirror area |
-
2017
- 2017-09-13 CN CN201721175976.8U patent/CN207701280U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108412687A (en) * | 2017-09-13 | 2018-08-17 | 东莞理工学院 | A kind of adaptive liter resistance regulation method, sail and the wind turbine of airfoil wind sail |
| CN115432076A (en) * | 2022-09-29 | 2022-12-06 | 同济大学 | Jet flow method for reducing aerodynamic noise of rearview mirror area |
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