CN103388556A - Vertical axis wind turbine for delay control of blade stall - Google Patents
Vertical axis wind turbine for delay control of blade stall Download PDFInfo
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- CN103388556A CN103388556A CN2013103502344A CN201310350234A CN103388556A CN 103388556 A CN103388556 A CN 103388556A CN 2013103502344 A CN2013103502344 A CN 2013103502344A CN 201310350234 A CN201310350234 A CN 201310350234A CN 103388556 A CN103388556 A CN 103388556A
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- blade
- vertical axis
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- strut
- axis windmill
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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
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Abstract
The invention discloses a vertical axis wind turbine for delay control of blade stall comprising blades and supporting rods for supporting the blades, wherein the top end of a tower of a vertical axis wind turbine is provided with a turbine getter device, the bottom of the turbine getter device is connected with a sun wheel of a planetary gear, the rotating shaft of a star wheel of the planetary gear is fixed, an outer tooth ring meshed with the star wheel is fixedly connected with the supporting rods, through gas-guide tubes are arranged in the supporting rods and the blades, the gas-guide tubes in the supporting rods run through the internal space of the outer tooth ring, and the gas-guide tubes in the blades are connected with spray tubes on the outer side face of the blades in a communicated manner. When the blades rotate, the turbine getter device is driven to rotate at high speed to suck air, the air flow is transmitted into the spray tubes on the outer side of the blades by the gas-guide tubes arranged in the supporting rods, and under the action of centrifugal force, the air flow is thrown away along the surfaces of the blades; and under the action of the sprayed air flow, laminar separation of the blades is delayed, the airfoil shape lift force is increased, and further under the same working condition, the power output of the wind turbine is increased.
Description
?
Technical field
The present invention relates to wind power generation field, be specially the turbine suction means is installed at vertical axis windmill tower cylinder top, device produces power by vane rotary, air amount imports strut, penetrated by the blade surface jet pipe under centrifugal action, secondary air improves the blade surface laminar condition, thereby promotes blade lift, and then promotes the wind energy conversion system output power.
Background technique
Vertical axis windmill is thought by tradition that its wind energy utilization is low and is got the brush-off.Because its plurality of advantages displays gradually, the market competitiveness constantly strengthens but in recent years.
(HAWT) compares with horizontal-shaft wind turbine, and vertical axis aerogenerator (VAWT) has obvious advantage.The VAWT blade design is simple, and production domesticization easily; Generator is placed under blower fan or ground, and the installation and maintenance expense is all low; Be not limited by wind direction, need not navigation system, do not lose useful work; Rotational speed is relatively slow, and noise is lower than 75% of HAWT; The trouble free service wind speed range is larger, and to the strong adaptability of weather, running time in blower fan year is long.Facts have proved, with HAWT, compare, the cost of investment of VAWT per kilowatt 50% left and right that can descend, and maintenance cost is low, and maintenance is simple, and the life-span is longer.
That utilizes that vertical axis windmill generates electricity mainly contains two kinds of types, i.e. Darrieus type and Giromill type.Its principle is all that blade profile is introduced the lift-type aerofoil profile, guarantees that when High Rotation Speed air-flow also blows to the aerofoil profile leading edge with the wind in distinguishing, and produces enough lift holding power output.Usually, this lift-type wind energy conversion system optimum tip-speed ratio maintains between 2～4.
There is an inevitable problem in the pneumatic aspect of lift-type wind energy conversion system, is namely the stall phenomenon.Vane airfoil profile is in a period of rotation, and the angle of attack changes fast.The aerofoil profile laminar flow makes impeller in whole period of rotation from the clad can to the separation, the output torque presents the sinusoidal variations rule.Simultaneously, the output torque of blade tip place is lower, and has delay phenomenon, so its distinctive stall phenomenon makes pneumatic equipment blades made can not bring into play efficiently aeroperformance.
Summary of the invention
The technical problem that (ⅰ) will solve
The problem to be solved in the present invention is to utilize the wind wheel self power to drive tower cylinder top turbo machine to rotate, and carries out air-breathingly, and air-flow imports blade through strut, throws away along blade outer surface under centrifugal action, alleviates the blade stall phenomenon.
(ⅱ) technological scheme
The present invention adopts following technological scheme for achieving the above object:
A kind of blade stall postpones the vertical axis windmill of controlling, the strut (6) that comprises blade (5), support blade (5), it is characterized in that: turbine suction means (1) is installed on vertical axis windmill tower cylinder top, turbine suction means bottom is connected with planetary sun gear (4), planetary star-wheel (2) rotating shaft is fixed, and with the external toothing (3) of star-wheel (2) engagement, with strut (6), is fixedly connected with; In strut (6), be provided with the air pipe (11) of perforation in blade (5), air pipe (11) in strut (6) connects to external toothing (3) inner space, and the air pipe (11) in blade (5) connects and is connected with blade (5) outer side surface jet pipe (12).
The turbine suction means covers with straight cylinder (9), and the straight cylinder internal diameter is greater than turbine suction means (1) blade rotation round diameter.
Described straight cylinder (9) is fixedly connected with the fixed rotating shaft of star-wheel (2), and in straight cylinder (9) upper outside perforate, tapping covers with rain shade (8).
Sun gear (4) diameter is greater than star-wheel (2) diameter, and external toothing (3) while with blade, rotating, drives sun gear (4) by engagement and does high speed rotating.
Strut (6) is oval blank pipe, with external toothing (3), is connected perforation, and the position, joint is in top, star-wheel (2) position.
The interior air pipe of blade (5) (11) is connected with the vertical perforation of the interior air pipe of strut (6) (11), and, by the airflow diversion that the interior air pipe of blade (5) (11) will transmit, is delivered to each cross section of blade.
Blade (5) is made by composite material, and blade (5) and built-in air pipe (11) together matched moulds are made.
The blade lift face is that the rotary blade outer side surface is installed some jet pipes (12), and jet pipe (12) axial direction is consistent with outlet port vane airfoil profile tangent direction.
Strut (5) is connected at distance blade (6) aerofoil profile leading edge 1/4 long-chord line place with blade (6).
(ⅲ) beneficial effect
The effect that the present invention is useful is:
The present invention need not to consume additional energy, utilizes wind wheel self torque to drive air-breathing turbo machine high speed rotating, with tower cylinder surrounding atmosphere suction gas directing system.Air-flow, by strut and blade interior air pipe, under centrifugal action, penetrates from air jet pipe.The blade outside is under the secondary air effect, and laminar flow separation is eased, even under the stall azimythal angle, moment of torsion output is preferably arranged still.Compare with original wind energy conversion system, under identical operating mode, power stage increases obviously.
Description of drawings
Fig. 1 is vertical axis windmill tower cylinder top turbine lift pump structural drawing;
Fig. 2 is that vertical axis wind turbine rotor is arranged schematic diagram;
Fig. 3 is the embedded gas directing system schematic diagram of wind energy conversion system strut and blade;
Fig. 4 is vertical axis windmill tower cylinder top turbine lift pump sectional view.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is further described:
Require design vertical axis windmill basic fundamental parameter according to rated power, comprise blade dimensions, wind wheel radius, aerofoil profile type, tower cylinder height etc.Wherein, blade 5 numbers can be 3～5, are designed to 4 in the present embodiment, see Fig. 2.
Settle the turbine lift pump at wind turbine tower cylinder main shaft 10 tops, see Fig. 1, Fig. 2 and Fig. 4.The turbine lift pump comprises the planetary pinion that is connected with bottom with blade turbine 1.Planetary pinion external toothing 3 outsides are connected with wind energy conversion system strut 6, and star-wheel 2 rotating shafts are fixed, and sun gear 4 is fixedly connected with turbine 1.Adjust external toothing 3 diameters
With sun gear 4 diameters
Ratio is about
Sun gear 4 diameters, greater than star-wheel 2 diameters, when external toothing 3 rotates with wind wheel, drive sun gear 4 and do high speed rotating under larger gear ratio, when sun gear 4 rotated, the turbine 1 that is connected with sun gear 4 carried out high speed rotating thereupon, sucked air-flow.Design turbine 1 number of blade is 6, and turbine 1 top rotating shaft designs for round end.
Adopt metal straight cylinder 9 to cover to the turbine lift pump, straight cylinder 9 is connected with the fixed rotating shaft of star-wheel 2, and the space that external toothing 3 surrounds is sealed.Straight cylinder 9 internal diameters are slightly larger than turbine 1 blade rotary diameter.Straight cylinder 9 top outer perforates, tapping covers with rain shade 8,, to block raindrop and the stone grain enters, sees Fig. 2 and Fig. 4.
Gas directing system comprises and is arranged in strut 6 and the air pipe 11 of blade 5 internal run-throughs, the interior air pipe 11 of strut 6 connects to external toothing 3 inner spaces, under the rotating wind wheel centrifugal action, flow through straight cylinder 9 of turbine 1 inhaling air is all imported air pipes 11 in struts 6, and the air pipe in strut 6 11 enters the air pipe 11 in blade 5, and the tie point place of the air pipe 11 in the air pipe in strut 6 11 and blade 5, to suck gas distribution by the inner air pipe 11 of blade 5, be sent to the blade arbitrary section, see Fig. 3 and shown in Figure 4.
Blade (5) is composite structure.Blade air pipe 11 embedded with it together matched moulds made.Blade 5 outsides, the i.e. some air jet pipes 12 of rotating wind wheel arranged outside.Air jet pipe 12 is connected with air pipe 11 perforations in blade 5, turbine 1 is sucked air-flow along blade 5 surfaces, spray.Air jet pipe 12 axial location are consistent with its place blade 5 section aerofoil profile tangent directions, as shown in Figure 3.
Claims (9)
1. a blade stall postpones the vertical axis windmill of controlling, the strut (6) that comprises blade (5), support blade (5), it is characterized in that: turbine suction means (1) is installed on vertical axis windmill tower cylinder top, turbine suction means bottom is connected with planetary sun gear (4), planetary star-wheel (2) rotating shaft is fixed, and with the external toothing (3) of star-wheel (2) engagement, with strut (6), is fixedly connected with; In strut (6), be provided with the air pipe (11) of perforation in blade (5), air pipe (11) in strut (6) connects to external toothing (3) inner space, and the air pipe (11) in blade (5) connects and is connected with blade (5) outer side surface jet pipe (12).
2. a kind of blade stall according to claim 1 postpones the vertical axis windmill of controlling, and it is characterized in that: the turbine suction means covers with straight cylinder (9), and the straight cylinder internal diameter is greater than turbine suction means (1) blade rotation round diameter.
3. a kind of blade stall according to claim 2 postpones the vertical axis windmill of controlling, it is characterized in that: described straight cylinder (9) is fixedly connected with the fixed rotating shaft of star-wheel (2), and in straight cylinder (9) upper outside perforate, tapping covers with rain shade (8).
4. a kind of blade stall according to claim 1 postpones the vertical axis windmill of controlling, it is characterized in that: sun gear (4) diameter is greater than star-wheel (2) diameter, external toothing (3) while with blade, rotating, drives sun gear (4) by engagement and does high speed rotating.
5. a kind of blade stall according to claim 1 postpones the vertical axis windmill of controlling, and it is characterized in that: strut (6) is oval blank pipe, is connected perforation with external toothing (3), and the position, joint is in top, star-wheel (2) position.
6. a kind of blade stall according to claim 1 postpones the vertical axis windmill of controlling, it is characterized in that: the interior air pipe of blade (5) (11) is connected with the vertical perforation of the interior air pipe of strut (6) (11), and, by the airflow diversion that the interior air pipe of blade (5) (11) will transmit, be delivered to each cross section of blade.
7. a kind of blade stall according to claim 1 postpones the vertical axis windmill of controlling, and it is characterized in that: blade (5) is made by composite material, and blade (5) and built-in air pipe (11) together matched moulds are made.
8. according to claim 1 or 6 described a kind of blade stalls postpone the vertical axis windmill of controlling, it is characterized in that: the blade lift face is that the rotary blade outer side surface is installed some jet pipes (12), and jet pipe (12) axial direction is consistent with outlet port vane airfoil profile tangent direction.
9. a kind of blade stall according to claim 1 postpones the vertical axis windmill of controlling, and it is characterized in that: strut (5) is connected at distance blade (6) aerofoil profile leading edge 1/4 long-chord line place with blade (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103502344A CN103388556A (en) | 2013-08-13 | 2013-08-13 | Vertical axis wind turbine for delay control of blade stall |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103502344A CN103388556A (en) | 2013-08-13 | 2013-08-13 | Vertical axis wind turbine for delay control of blade stall |
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| CN103388556A true CN103388556A (en) | 2013-11-13 |
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| CN2013103502344A Pending CN103388556A (en) | 2013-08-13 | 2013-08-13 | Vertical axis wind turbine for delay control of blade stall |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112523955A (en) * | 2020-11-26 | 2021-03-19 | 诸暨和创电机科技有限公司 | Wind power generation equipment with overload protection function |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1727671A (en) * | 2004-07-29 | 2006-02-01 | 申鸿烨 | Air intake mechanism of wind machine with vertical axis |
| CN101509464A (en) * | 2009-03-22 | 2009-08-19 | 申振华 | Passive jet method and device for enhancing vertical shaft wind mill performance |
| US20110103952A1 (en) * | 2010-12-07 | 2011-05-05 | General Electric Company | Wind turbine rotor blade with variably actuatable porous window |
| AU2011101237A4 (en) * | 2011-09-26 | 2011-11-10 | Nokuta Pty Ltd | Method and apparatus for enhancing energy generation |
| CN202991344U (en) * | 2012-11-27 | 2013-06-12 | 沈阳航空航天大学 | Vertical axis air suction wind turbine |
-
2013
- 2013-08-13 CN CN2013103502344A patent/CN103388556A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1727671A (en) * | 2004-07-29 | 2006-02-01 | 申鸿烨 | Air intake mechanism of wind machine with vertical axis |
| CN101509464A (en) * | 2009-03-22 | 2009-08-19 | 申振华 | Passive jet method and device for enhancing vertical shaft wind mill performance |
| US20110103952A1 (en) * | 2010-12-07 | 2011-05-05 | General Electric Company | Wind turbine rotor blade with variably actuatable porous window |
| AU2011101237A4 (en) * | 2011-09-26 | 2011-11-10 | Nokuta Pty Ltd | Method and apparatus for enhancing energy generation |
| CN202991344U (en) * | 2012-11-27 | 2013-06-12 | 沈阳航空航天大学 | Vertical axis air suction wind turbine |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112523955A (en) * | 2020-11-26 | 2021-03-19 | 诸暨和创电机科技有限公司 | Wind power generation equipment with overload protection function |
| CN112523955B (en) * | 2020-11-26 | 2022-04-12 | 海南斯兰低碳投资有限公司 | Wind power generation equipment with overload protection function |
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Application publication date: 20131113 |