CN204140272U - A kind of two half leaf formula low speed start rises resistance change formula vertical shaft fan wind wheel system - Google Patents
A kind of two half leaf formula low speed start rises resistance change formula vertical shaft fan wind wheel system Download PDFInfo
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- CN204140272U CN204140272U CN201420582296.8U CN201420582296U CN204140272U CN 204140272 U CN204140272 U CN 204140272U CN 201420582296 U CN201420582296 U CN 201420582296U CN 204140272 U CN204140272 U CN 204140272U
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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
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- Y02E10/74—Wind turbines with rotation axis perpendicular to the wind direction
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Abstract
The utility model discloses a kind of two half leaf formula low speed start and rise resistance change formula vertical shaft fan wind wheel system, comprise main shaft, connecting rod and changable type blade, connecting rod comprises connecting rod and lower link, and changable type blade is connected with main shaft by connecting rod.Described changable type leaf packet is containing the first blade and the second blade, the top of the first blade is connected with lower link with upper connecting rod by fixed rotating shaft with bottom, second blade is connected with the first blade by leading edge rotating shaft, is provided with opening and closing parts between the first blade and the second blade.Also lift-type blade can be set up between main shaft and changable type blade.The utility model is by the automatic conversion of changable type blade between resistance blade profile and lift blade profile, resistance type blade is stretched to during low wind speed, during high wind speed, autocondensation becomes lift-type blade, science has organically merged resistance type blade detent torque is large, threshold wind velocity is low advantage and the higher advantage of lift-type blade aerodynamic efficiency, realizes the design object of low speed start, Effec-tive Function.
Description
Technical field
The utility model relates to a kind of vertical shaft fan wind wheel, is more particularly a kind of liter resistance change formula blade vertical shaft fan wind wheel system of half leaf formula low speed start, belongs to technical field of wind power generation.
Background technique
Wind energy resources has widely distributed, rich reserves, clean the advantages such as renewable, under the fossil energy such as coal and the oil international background that shortage, environment go from bad to worse increasingly, the exploitation of wind energy resources are day by day subject to the extensive concern of countries in the world and continue to drop into, and wind generating technology and industry worldwide obtain and develop faster.In grid-connected large-scale wind generating technical field, apply most often horizontal axis blower fan at present in the world, its technology relative maturity, lots of production is large, has become the mainstream model of current blower fan.But along with the rising of distributed energy supply and blower fan miniature requirement, the shortcomings such as congenital deficiency such as horizontal axis fan starting wind speed is high, operating noise is large, wind loading rating is poor progressively expose, and have that structure is relatively simple, threshold wind velocity is low, aerodynamic noise is little, the better vertical shaft fan of wind-engaging performance, progressively steps into the visual field of people.
Vertical shaft fan is mainly divided into resistance force type vertical shaft wind machine and the large class of lift vertical shaft blower fan two.Lift vertical shaft utilizes the lift of wind to rotate with the speed times over wind speed, can high efficiency output wind energy, but threshold wind velocity compared with high, detent torque is little, usually can not self-starting, city and low wind speed area applications comparatively difficult.And although resistance force type vertical shaft wind machine pneumatic efficiency is lower, there is detent torque large, can in the little startup of lower wind speed a little; If the advantages of two kinds of blower fans can be got up, design that to have threshold wind velocity concurrently low, the vertical shaft fan of the high two kinds of advantages of pneumatic efficiency obviously has more excellent application prospect and competitive ability.
For realizing the purpose of design of above low speed start, Effec-tive Function, usual by lift vertical shaft blower fan wind wheel and resistance force type vertical shaft wind machine wind wheel stack combinations at present.Lift-type blade is in outer ring, and resistance type blade is in inner ring corresponding position, as described in patent (CN103527403A).Such design make use of the low advantage of resistance type blade threshold wind velocity on the one hand, and the larger detent torque utilizing resistance type blade to produce under gentle breeze drives wind wheel system to rotate, and reduces the threshold wind velocity of blower fan; On the other hand, at higher wind speeds, lift-type blade is exerted oneself and is accounted for leading, make use of the advantage that lift-type blade aerodynamic efficiency is higher.Now, the resistance type blade being in inner ring is little by air-flow direct effect, mainly rotates under lift-type blade drives.While bringing added power dissipation, the original air flow method in whole flow field has been confused in the rotation of resistance type blade, causes the decline of lift-type blade pressure surface air pressure.And the change of lift-type blade stream field is comparatively responsive, the change of flow field and pressure brings the decline of pneumatic efficiency, causes at higher wind speeds, and such liter resistance convolution wind wheel system utilizes the efficiency of wind energy, and comparatively lifting wind wheel system is lower.In addition, in patent (CN103527403A), the design of two panels resistance type blade can not ensure to eliminate dead point when starting completely.If wind is from just blowing resistance type blade side direction, just little to the blade area of incoming flow, need very large wind speed, blower fan could start or can not start completely.
If by rational design, when making low wind speed, vane extension is resistance type blade, to obtain lower threshold wind velocity; During high wind speed, autocondensation becomes lift-type blade, forms lifting wind wheel layout.In addition, if the double H-type wind wheel system in lifting wind wheel is by rational pneumatic design, the pneumatic efficiency more more excellent than common H type wind wheel can be obtained.By increasing blade number, eliminate the existence at dead point when starting.To realize low speed start, Effec-tive Function, without the purpose of design starting dead point, this programme is and solves problems and design.
Model utility content
Goal of the invention: in order to overcome the deficiencies in the prior art, the utility model provides a kind of liter resistance change formula vertical shaft fan wind wheel system of two half leaf formula low speed start, and during low wind speed, vane extension is resistance type blade, obtains lower threshold wind velocity; During high wind speed, be automatically closed into lift-type blade, realize the purpose of design at low speed start, Effec-tive Function, nothing startup dead point.
Technological scheme: for solving the problems of the technologies described above, the liter resistance change formula blade vertical shaft fan wind wheel system of a kind of half leaf formula low speed start of the present utility model, comprise main shaft, some connecting rods and changable type blade, changable type blade is connected with main shaft by connecting rod, described connecting rod comprises connecting rod and lower link, upper connecting rod and lower link one end are connected to main shaft, the other end respectively connected changable type blade tip and bottom, changable type leaf packet is containing the first blade and the second blade, first blade tip is connected with connecting rod respectively by fixed rotating shaft with bottom, namely top is connected to connecting rod, bottom is connected to lower link, second blade is connected with the first blade by leading edge rotating shaft, opening and closing parts are provided with between first blade and the second blade.Also can set up a circle lift-type blade again between changable type blade and main shaft, so that at higher wind speeds, utilize two lift-type layout to increase wind energy utilization efficiency.
As preferably, described changable type blade is three to six, uniform along main shaft circumference.Same described lift-type blade is also three to six, uniform along main shaft circumference.When lift-type lobe numbers is identical with changable type lobe numbers or be one half, lift-type blade shares connecting rod with changable type blade and is connected with main shaft; When lift-type lobe numbers different from changable type lobe numbers and be not its twice time, then separately establish slave connecting rod, lift-type blade is connected with main shaft by slave connecting rod, slave connecting rod contains slave connecting rod and lower slave connecting rod equally, wherein when lift-type lobe numbers is changable type lobe numbers twice, namely lift-type lobe numbers is 6, changable type lobe numbers is when being 3, and three lift-type blades installations corresponding with changable type blade are with weight reduction on connecting rod, and another three arrange slave connecting rod and install.
As preferably, described opening and closing parts comprise pouring weight, slide block, conduit etc., first blade is arranged on upper connecting rod and lower link by fixed rotating shaft, second blade tip is all connected with slide block by movable rotation-shaft with bottom, conduit is provided with in upper connecting rod lower surface and lower link upper surface, slide block slides along conduit, and the two sides that the first blade is adjacent with the second blade scribbles homopolarity magnetic coating, and the second blade is provided with pouring weight away from one end of leading edge rotating shaft.
As preferably, described connecting rod is provided with fixture block, and the first blade is provided with away from main shaft one side the plane of orientation coordinated with fixture block.
Beneficial effect: the liter resistance change formula blade vertical shaft fan wind wheel system of half leaf formula low speed start of the present utility model, has the following advantages:
1. science has organically merged resistance force type vertical shaft wind machine detent torque is large, threshold wind velocity is low advantage and the higher feature of lift vertical shaft aerodynamic efficiency, has threshold wind velocity concurrently low, the combined type vertical shaft fan wind wheel system that pneumatic efficiency is high.
2., by the change of changable type vane foil with wind wheel system rotating speed, the automatic transformation between resistance type and lift-type, makes full use of the advantage of resistance type and lift-type two kinds of blades.Under the little rotating speed of low wind speed, changable type mounted blade becomes resistance type blade, makes full use of the advantage that resistance type blade threshold wind velocity is low, starting torque is large, achieves the purpose of design of low speed start; When wind speed is higher, wind speed round is larger, blade is closed into lift-type blade, and wind wheel system is automatically changeb to lift-type blade layout.Eliminate traditional lift-type blade, resistance type blade in conjunction with resistance type blade in the wind wheel system of layout for the interference of lift-type blade, thus the efficiency caused is lower than simple lift-type blade layout, if set up a circle lift-type blade in addition, the wind wheel system of two lift-type blade layout has the wind energy utilization efficiency higher than single lift-type blade layout, to utilize wind energy better, achieve the purpose of design of Effec-tive Function.
3. make use of on the basis that lift-type fan efficiency is high, resistance type rotation speed of fan is low fully, adopt the vertical shaft fan of air vane system of the present utility model, will have on wind energy utilization efficiency compared to existing combined type vertical shaft fan and promote largely.
Accompanying drawing explanation
Wind wheel system plan view during the low wind speed of Fig. 1 little rotating speed;
Wind wheel system plan view during Fig. 2 high wind speed height rotating speed;
Changable type blade schematic diagram under Fig. 3 high wind speed under lift conditions;
Changable type blade schematic diagram under the low wind speed of Fig. 4 under resistive state;
Wind wheel system side view under Fig. 5 high wind speed under lift conditions;
Fig. 6 is the wind wheel system plan view setting up lift-type blade;
Wind wheel system side view when lift-type blade under Fig. 7 high wind speed under lift conditions, changable type lobe numbers are different;
Have in figure: main shaft 1; Lift-type blade 2; Changable type blade 3; Blade 3-1; Second blade 3-2; Connecting rod 4; Upper connecting rod 4-1; Lower link 4-2; Slave connecting rod 5; Upper slave connecting rod 5-1; Lower slave connecting rod 5-2; ; Fixed rotating shaft 6; Pouring weight 7; Leading edge rotating shaft 8; Slide block 9; Conduit 10; Fixture block 11.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described.
Embodiment 1
As shown in Fig. 1 to 5, for two half leaf formula low speed start of the present utility model rises resistance change formula blade vertical shaft fan wind wheel system.Wind wheel system is made up of main shaft 1, changable type blade 3, connecting rod 4.Changable type blade 3 is uniform along main shaft 1 circumference, and number is three to six, is arranged on main shaft 1 by connecting rod 4.Changable type blade 3 comprises the first blade 3-1 and the second blade 3-2, and the second blade 3-2 is connected with the first blade 3-1 by leading edge rotating shaft 8.Connecting rod 4 comprises connecting rod 4-1 and lower link 4-2, both parallel installations, and upper connecting rod is connected the first blade 3-1 upper and lower with one end of lower link respectively by fixed rotating shaft 6, and the other end all connects main shaft 1.Second blade 3-2 top and bottom all have and are attached thereto slide block 9 by movable rotation-shaft.Second blade 3-2 is arranged on connecting rod and lower link by the slide block 9 of band rotating shaft, upper connecting rod lower surface and the interior corresponding position of lower link upper surface are respectively equipped with straight line conduit 10, slide block 9 slides along conduit 10, the two sides that first blade 3-1 is adjacent with the second blade 3-2 scribbles homopolarity magnetic coating, and the second blade 3-2 is provided with pouring weight 7 away from one end of leading edge rotating shaft 8.Upper connecting rod lower surface and lower link upper surface are equipped with fixture block 11, and the first blade 3-1 is outwards equipped with the plane of orientation coordinated with fixture block 11 in one side upper and lower away from main shaft 1.
In the utility model, the hollow blade that all blades all select light anticorrosive material (comprising unsaturated resin, saturated resin, carbon fiber, light aluminum alloy etc.) to manufacture, there is the advantage such as corrosion resistance and good, quality is light, intensity is high, excellent heat insulating performance, easily processing, adopt very thin thickness can meet design strength requirement, to alleviate wind wheel quality.The changable type blade 3 H type lift-type blade that to be a slice cut away half along camber line between front and rear edge point, leading edge is sentenced leading edge rotating shaft 8 and is connected.
When blower fan is static or wind speed is less, wind speed round is less, for wherein a slice changable type blade 3, the centrifugal force that pouring weight 7 as shown in Figure 4 produces is less.Repel each other because two sides AD ' B and CE ' B inside changable type blade 3 is homopolarity magnetic face, centrifugal force is not enough to offset magnetive attraction, makes the first blade 3-1 and the second blade 3-2 have the trend mutually repelled and open flattening.With fixed rotating shaft 6 for locating point, the second blade 3-2 moves along conduit 10 direction, slide block 9 place to main shaft 1, and changable type blade is now stretched to resistance type blade.Resistance type blade has the advantage that detent torque is large, threshold wind velocity is low, and lower wind speed just can provide larger threshold wind velocity, to realize the purpose of design of breeze start-up.By the length of magnetive attraction size and conduit 10 on control AD ' B face and CE ' B face, can the angle that trails of limit blade, regulate resistance type blade wind-receiving face size.
When wind speed increases gradually, when the rotating speed of blower fan rises gradually, the centrifugal force that pouring weight 7 produces increases gradually.When its size exceedes magnetic resistance, the first blade 3-1 and the second blade 3-2 produces mutually closed trend.With fixed rotating shaft 6 for locating point, the second blade 3-2 moves along conduit 10 direction, slide block 9 place to away from main shaft 1 direction, and changable type blade 3 now closes gradually as lift-type blade.The fixture block 11 be connected with connecting rod 4 matches with the plane of orientation on the second blade 3-2 radius outer side surface, limits the angle windward of now changable type blade 3.
Embodiment 2
As shown in Figure 6 and Figure 7, the liter resistance change formula blade vertical shaft fan wind wheel system of two half leaf formula low speed starts of another kind of layout of the present utility model, sets up lift-type blade 2 between changable type blade 3 and main shaft 1.Lift-type blade 2 is uniform along main shaft circumference, and number is similarly three to six.When lift-type blade 2 number is identical with changable type blade 3 number or be one half, changable type blade 3 and lift-type blade 2 share connecting rod 4 and are connected with main shaft 1; Changable type blade 3 number is different from lift-type blade 2 number and be not one half, then separately establish slave connecting rod, lift-type blade 2 is connected with main shaft 1 by slave connecting rod 5.Wherein when the half that changable type blade 3 number is lift-type blade 2 number, namely lift-type lobe numbers is 6, changable type lobe numbers is when being 3, the three slice lift-type blades 2 corresponding with changable type blade 3 are arranged on weight reduction on connecting rod 4, and another three arrange slave connecting rod 5 and install.
Lift-type blade 2 adopts the material manufacture same with changable type blade 3, and be vertically isometrical H type blade, cross section is constant also non-warping, simple shape, low cost of manufacture;
In use, when blower fan is static or wind speed is less, wind speed round is less, for wherein a slice changable type blade 3, the centrifugal force that pouring weight 7 as shown in Figure 4 produces is less for the utility model.Repel each other because two sides AD ' B and CE ' B inside changable type blade 3 is homopolarity magnetic face, centrifugal force is not enough to offset magnetive attraction, makes the first blade 3-1 and the second blade 3-2 have the trend mutually repelled and open flattening.With fixed rotating shaft 6 for locating point, the second blade 3-2 moves along conduit 10 direction, slide block 9 place to main shaft 1, and changable type blade is now stretched to resistance type blade.Resistance type blade has the advantage that starting torque is large, threshold wind velocity is low, and lower wind speed just can provide larger threshold wind velocity, to realize the purpose of design of breeze start-up.By the length of magnetive attraction size and conduit 10 on control AD ' B face and CE ' B face, can the angle that trails of limit blade, regulate resistance type blade wind-receiving face size.
When wind speed increases gradually, when the rotating speed of blower fan rises gradually, the centrifugal force that pouring weight 7 produces increases gradually.When its size exceedes magnetic resistance, the first blade 3-1 and the second blade 3-2 produces mutually closed trend.With fixed rotating shaft 6 for locating point, the second blade 3-2 moves along conduit 10 direction, slide block 9 place to away from main shaft 1 direction, and changable type blade 3 now closes gradually as lift-type blade.The fixture block 11 be connected with connecting rod 4 matches with the plane of orientation on outer half leaf of changable type blade 3, limits the angle windward of now changable type blade 3.Be in the changable type blade 3 of lift conditions, make wind wheel system with double H-type layout work, by the interlobate size of appropriate design Internal and external cycle, distance, angle etc., the efficiency higher than the wind wheel system of common single H type layout can be obtained.
The above is only preferred implementation of the present utility model; be noted that for those skilled in the art; under the prerequisite not departing from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (6)
1. a two half leaf formula low speed start rises resistance change formula vertical shaft fan wind wheel system, comprise main shaft (1), connecting rod (4) and changable type blade (3), connecting rod (4) comprises connecting rod (4-1) and lower link (4-2), upper connecting rod (4-1) and lower link (4-2) one end are connected to main shaft, the other end respectively connected changable type blade (3) top and bottom, it is characterized in that: described changable type blade (3) comprises the first blade (3-1) and the second blade (3-2), the top of the first blade (3-1) is connected with connecting rod (4) respectively by fixed rotating shaft (6) with bottom, namely top is connected to connecting rod (4-1), bottom is connected to lower link (4-2), second blade (3-2) is connected with the first blade (3-1) by leading edge rotating shaft (8), opening and closing parts are provided with between first blade (3-1) and the second blade (3-2).
2. the two half leaf formula low speed start of one according to claim 1 rises resistance change formula vertical shaft fan wind wheel system, it is characterized in that: described changable type blade (3) is three to six, uniform along main shaft (1) circumference.
3. the two half leaf formula low speed start of one according to claim 1 and 2 rises resistance change formula vertical shaft fan wind wheel system, it is characterized in that: described opening and closing parts comprise pouring weight (7), slide block (9), conduit (10), second blade (3-2) top and bottom are all connected with slide block (9) by movable rotation-shaft, conduit (10) is provided with in connecting rod (4), namely connecting rod (4-1) lower surface and lower link (4-2) upper surface is arranged at respectively, slide block (9) slides along conduit (10), the two sides that first blade (3-1) is adjacent with the second blade (3-2) scribbles homopolarity magnetic coating, second blade (3-2) is provided with pouring weight (7) away from one end of leading edge rotating shaft (8).
4. the two half leaf formula low speed start of one according to claim 3 rises resistance change formula vertical shaft fan wind wheel system, it is characterized in that: described connecting rod (4) is provided with fixture block (11), the first blade (3-1) is provided with away from main shaft (1) one side the plane of orientation coordinated with fixture block (11).
5. the two half leaf formula low speed start of one according to claim 1 rises resistance change formula vertical shaft fan wind wheel system, it is characterized in that: set up a circle lift-type blade (2) between described main shaft (1) and changable type blade (3).
6. the two half leaf formula low speed start of one according to claim 5 rises resistance change formula vertical shaft fan wind wheel system, it is characterized in that: described lift-type blade (2) is three to six, uniform along main shaft (1) circumference; If lift-type blade (2) number is identical with changable type blade (3) or be one half, lift-type blade (2) and changable type blade (3) share connecting rod (4) and are connected with main shaft (1); When lift-type blade (2) number different from changable type blade (3) number and be not multiple time, then separately establish slave connecting rod (5) to be connected with main shaft (1).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420582296.8U CN204140272U (en) | 2014-10-09 | 2014-10-09 | A kind of two half leaf formula low speed start rises resistance change formula vertical shaft fan wind wheel system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420582296.8U CN204140272U (en) | 2014-10-09 | 2014-10-09 | A kind of two half leaf formula low speed start rises resistance change formula vertical shaft fan wind wheel system |
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| CN204140272U true CN204140272U (en) | 2015-02-04 |
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| CN201420582296.8U Expired - Fee Related CN204140272U (en) | 2014-10-09 | 2014-10-09 | A kind of two half leaf formula low speed start rises resistance change formula vertical shaft fan wind wheel system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104265563A (en) * | 2014-10-09 | 2015-01-07 | 东南大学 | Double-half-vane type low-speed starting lift-to-drag interconversion type wind rotor system of vertical-axis wind turbine |
| CN107387315A (en) * | 2017-09-14 | 2017-11-24 | 窦学华 | A kind of vertically arranged wind-driven generator of fan blade |
| CN109826749A (en) * | 2019-02-21 | 2019-05-31 | 清华大学 | A kind of auxiliary wing variable pitch and can self-starting large-scale darrieus blower |
-
2014
- 2014-10-09 CN CN201420582296.8U patent/CN204140272U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104265563A (en) * | 2014-10-09 | 2015-01-07 | 东南大学 | Double-half-vane type low-speed starting lift-to-drag interconversion type wind rotor system of vertical-axis wind turbine |
| CN107387315A (en) * | 2017-09-14 | 2017-11-24 | 窦学华 | A kind of vertically arranged wind-driven generator of fan blade |
| CN107387315B (en) * | 2017-09-14 | 2019-08-16 | 窦学华 | A kind of wind-driven generator that fan blade is vertically arranged |
| CN109826749A (en) * | 2019-02-21 | 2019-05-31 | 清华大学 | A kind of auxiliary wing variable pitch and can self-starting large-scale darrieus blower |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150204 Termination date: 20181009 |