CN102434385A - Wind energy conversion device of megawatt-class wind power generation system - Google Patents
Wind energy conversion device of megawatt-class wind power generation system Download PDFInfo
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- CN102434385A CN102434385A CN2011104588911A CN201110458891A CN102434385A CN 102434385 A CN102434385 A CN 102434385A CN 2011104588911 A CN2011104588911 A CN 2011104588911A CN 201110458891 A CN201110458891 A CN 201110458891A CN 102434385 A CN102434385 A CN 102434385A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/74—Wind turbines with rotation axis perpendicular to the wind direction
Abstract
The invention provides a wind energy conversion device of a megawatt-class wind power generation system. The wind energy conversion device has high wind energy utilization rate and convenience in maintenance and comprises a base, wherein a peripheral tower is connected with the base, and a wind wheel mechanism is designed above the base; the wind wheel mechanism comprises a vertical rotating shaft; the lower part of the vertical rotating shaft is connected with a fluted disc in a horizontal direction, and the lower part and upper part of the vertical rotating shaft are respectively connected with the base through compound double-track ball bearings; a permanent seat is designed on the vertical rotating shaft and is connected with a blade bracket; and a windshield blade is sleeved on the blade bracket.
Description
Technical field
The present invention relates to a kind of wind generating unit, relate in particular to a kind of megawatt level wind power generation system wind energy converter.
Background technique
At present; Most of large-sized wind-driven generator of China is the horizontal axis wind generating device; What the Blade Design of such horizontal axis wind-driven generator generally adopted at present is that momentum-foline is theoretical, but because the foline theory has been ignored the flow interfering between each foline, when using foline Design Theory blade, has all ignored the resistance of aerofoil profile simultaneously; The inaccuracy that has inevitably caused the result is handled in this simplification; This simplification is less to the influence of blade profile design, but very big to the wind energy utilization influence of wind wheel, actual like this wind energy utilization is much smaller than theoretical utilization ratio of wind energy.In addition, the blade of horizontal axis wind-driven generator receives the comprehensive function of inertial force and gravity in the process that rotates a circle; The direction of inertial force changes at any time, and the direction of gravity is constant all the time, and what blade was suffered like this is exactly an alternate load; This fatigue strength for blade is very unfavorable; In addition, the generator of horizontal axis all places tens meters high-altitude, and this has brought a lot of inconvenience for the installation and maintenance maintenance of generator.Simultaneously environment is also existed certain influence, the tip-speed ratio of horizontal axis rotor generally about 5-7, will produce very big aerodynamic noise in such high speed lower blade cutting steam.The wind sheet volume of horizontal axis wind generating device is very big simultaneously; Need bigger wind speed just can make its main axis rotation; Utilization ratio of wind energy is lower, and mechanical efficiency is not high, and the installation area is restricted; Can only be installed in the coastal and desert area of China, and be not suitable for installing in the more hinterland of resident population.Because bigger volume and the restriction that the geographical position is installed then make its investment construction cost higher, installation and maintenance inconvenience.The wind sheet of the wind power generating set with vertical shaft that exists and the design of wind wheel organization are perfect inadequately; Not high to utilization ratio of wind energy, and generated energy is limited, can not realize high-power generating; And more than various forms of wind generating unit wind-engagings to influence bigger, can not eligibility the meaning direction.
Summary of the invention
The purpose of this invention is to provide high, the easy to maintenance megawatt level wind power generation system wind energy converter of a kind of wind energy utilization.
Be to realize above-mentioned purpose, the technological scheme that the present invention adopts is: a kind of megawatt level wind power generation system wind energy converter comprises base; Be connected with peripheral pylon on the base; It is characterized in that: the base top is designed with wind wheel organization, and wind wheel organization comprises vertical rotating shaft, and the bottom of vertical rotating shaft is connected with the fluted disc of substantially horizontal; The bottom of vertical rotating shaft is connected with base through compound double track ball bearing respectively with top; Be designed with fixed base on the vertical rotating shaft, be connected with blade rack on the fixed base, be with the blade that keeps out the wind on the blade rack.
In this structure, be designed with generator on the base, be connected with gear on the generator, gear is meshed with fluted disc,
In this structure, the blade that keeps out the wind comprises blade body, and the both sides of blade body are designed with the curved side blade, and the upper end of blade body is designed with fixed cover.
In this structure, blade rack is fixedly connected with limit spring, and limit spring is corresponding with the blade that keeps out the wind, and is designed with spring bracket on the limit spring, and spring bracket and limit spring are an integral body, and spring bracket is positioned at the blade rear of keeping out the wind.
In this structure, be designed with bracket tab on the blade rack, limit spring is between bracket tab.
In this structure, have screw on the fixed base, the two ends of blade rack are threaded, and blade rack is threaded with fixed base.
In this structure, blade rack is a multilayer, and the blade rack of lower floor is positioned at the keep out the wind rear of blade, upper strata.
In this structure, the free end of blade rack is connected with stop nut.
In this structure, be connected with lateral conductor between the free end of blade rack and the vertical rotating shaft, said blade body, curved side blade and fixed cover are an integral body.
In this structure, compound double track ball bearing comprises bearing, and bearing inner sleeve has cover in the composite bearing, between the cover ball base is housed in bearing and the composite bearing, and ball is housed in the ball base.
Advantageous effect of the present invention is: because this structure of the present invention, so advantage of the present invention is following:
1. generated energy is big; The generator of the transducing head of this wind-power generating system directly meshes through a gear and fluted disc; Velocity ratio is bigger; Under the degree of gentle breeze, weak wind, just can make vertical rotating shaft obtain very big moment of torsion, single-machine capacity can reach the 3-10 megawatt, and a plurality of generators are generated electricity simultaneously.
2. mechanical efficiency is high, and the wind-engaging side windward side vane stress that keeps out the wind is big, and the leeward almost non-resistance of blade that keeps out the wind of side makes the utilization ratio of wind improve greatly against the wind.
3. wind wheel organization also has rational design, and the interlaced one-tenth best angle of upper and lower layers blade rack makes the lifting surface area of the blade that keeps out the wind obtain utilizing to greatest extent, thereby has improved the utilization ratio of wind.
4. this device does not require wind direction, adapts to any wind direction, is convenient to popularize.
5. compare with the horizontal axis wind generating device, its tip-speed ratio is little, almost noise free.
6. the blade that keeps out the wind of this device can be hinged on two kinds of dissimilar supports, adapts to the requirement of the different wind energies in different regions, the narrow limitation of no region.
7. compare with similar wind generating unit, the investment of this plant construction is little, and cost of electricity-generating is low, service time and long service life, and installation and maintenance are convenient, and accommodative ability of environment is strong.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is an another kind of structural representation of the present invention;
Fig. 3 is a plan view of the present invention;
Fig. 4 is blade, limit spring, spring bracket and the blade rack linkage structure schematic representation of keeping out the wind among Fig. 1;
Fig. 5 is the structural representation of the blade that keeps out the wind among Fig. 1;
Fig. 6 is the user mode reference drawing of the blade that keeps out the wind among Fig. 1;
Fig. 7 is the structural representation of compound double track ball bearing among Fig. 1.
In the accompanying drawing: 1, stop nut; 2, vertical rotating shaft; 3, fixed base; 4, blade rack; 5, the blade that keeps out the wind; 6, peripheral pylon; 7, fluted disc; 8, base; 9, compound double track ball bearing; 10, generator; 11, gear; 12, limit spring; 13, bracket tab; 14, fixed cover; 15, blade body; 16, curved side blade; 17, spring bracket; 18, bearing; 19, ball; 20, cover in the composite bearing.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the present invention is described further:
The present invention is like Fig. 1,2,3,4,5,6, shown in 7, and a kind of megawatt level wind power generation system wind energy converter comprises base 8; Be connected with peripheral pylon 6 on the base 8, it is characterized in that: base 8 tops are designed with wind wheel organization, and wind wheel organization comprises vertical rotating shaft 2; The bottom of vertical rotating shaft 2 is connected with the fluted disc 7 of substantially horizontal, and the bottom of vertical rotating shaft 2 is connected with base 8 through compound double track ball bearing 9 respectively with top, is designed with fixed base 3 on the vertical rotating shaft 2; Be connected with blade rack 4 on the fixed base 3, be with the blade 5 that keeps out the wind on the blade rack 4, in the present embodiment; Be designed with generator 10 on the base 8; Be connected with gear 11 on the generator 10, the velocity ratio between gear 11 and fluted disc 7 phase gears and fluted disc is big, can mesh the gear of a plurality of connection generators around the fluted disc; The angle of interlaced the best of blade rack of the upper and lower improves utilization ratio of wind energy greatly.In the present embodiment; The blade 5 that keeps out the wind comprises blade body 15; The both sides of blade body 15 are designed with curved side blade 16, and the upper end of blade body 15 is designed with fixed cover 14, and this structure has increased the active force of wind to the blade that keeps out the wind; Increased the moment of torsion of Vertical direction, made vertical rotating shaft start rotation more easily.In the present embodiment; Blade rack 4 is fixedly connected with limit spring 12, and limit spring 12 is corresponding with the blade 5 that keeps out the wind, and is designed with spring bracket 17 on the limit spring 12; Spring bracket 17 is an integral body with limit spring 12, and spring bracket 17 is positioned at blade 5 rears of keeping out the wind.In the present embodiment, be designed with bracket tab 13 on the blade rack 4, limit spring 12 is between bracket tab 13.Use when of the present invention, can select the limit spring 12 of different elasticity coefficient, adapt to different wind according to the difference of geographical environment.The blade bottom infinite place bar that keeps out the wind can only unidirectionally overturn when the fresh breeze of can overturning is following, two-way upset when surpassing fresh breeze.Receive the time spent of doing of gentle breeze when the blade that keeps out the wind; Because the elastic force of the elastic force of spring this moment keeps vertically the windward side blade greater than wind to the active force of blade; The leeward side blade receives wind action and is lifted, and promotes the rotation of vertical rotating shaft, realizes the purpose that gentle breeze just can generate electricity.When the wind speed that receives high wind this moment is done the time spent more than Pyatyi; Its to the active force of the blade that keeps out the wind greater than the elastic force of spring to blade; This moment, spring was ineffective, blade was lifted, the release portion wind energy along wind direction; Make rotary shaft rotating speed be unlikely to excessive, prevent that high wind from causing damage to wind wheel organization and bottom generator.Each blade that keeps out the wind is separate simultaneously, does not receive the influence after other blades that keep out the wind damage, convenient for maintaining.In the present embodiment, have screw on the fixed base 3, the two ends of blade rack 4 are threaded, and blade rack 4 is threaded with fixed base 3, and is easy to connect; In the present embodiment, blade rack 4 is a multilayer, and the blade rack 4 of lower floor is positioned at the keep out the wind rear of blade 5, upper strata.In the present embodiment, the free end of blade rack 4 is connected with stop nut 1, and is fixed.In the present embodiment, be connected with lateral conductor between the free end of blade rack 4 and the vertical rotating shaft 2, improve steadiness of the present invention and support force, said blade body 15, curved side blade 16 and fixed cover 14 are an integral body, and whole device is firm.In the present embodiment, compound double track ball bearing 9 comprises bearing 18, is with cover 20 in the composite bearing in the bearing 18; Between the cover 20 ball base is housed in bearing 18 and the composite bearing, ball 19 is housed in the ball base, utilize compound double track ball bearing 9 can further reduce resistance; This device starts more easily, has increased the sensitivity that wind wheel organization starts, and efficient is high; Heating value is few, can reduce the consumption of lubricant oil, and is easy to maintenance.
Use when of the present invention, the blade rack 4 of lower floor promptly can be as the position-limited lever of the blade 5 that keeps out the wind on upper strata, when the windward side of wind-engaging side blade receives wind action power; This moment, position-limited lever contacted with the blade that keeps out the wind, and the blade direction upset with the wind of keeping out the wind promotes the rotation of running shaft; And then the fluted disc that makes the bottom drives generator work, and the lee face of the side blade that keeps out the wind receives wind action power and is released lee face and has basically no resistance against the wind, and the blade of arc is vertically mounted on the support simultaneously; Compare with the arc shaped blade device of existing traverse; Can not cause the accumulation of heavy snow in the snow sky, support is damaged, not receive boisterous the influence; This moment, wind wheel structure received force couple role; Produce around the central shaft rotating moment, under the degree of gentle breeze, weak wind, just can drive generator through the gearwheel of running shaft lower end and rotate, send the electric weight of MW class.
The present invention can make running shaft obtain very big torque under very little wind speed, can use a plurality of generator work to generate electricity simultaneously, and single-machine capacity can reach the 3-10 megawatt.
Use when of the present invention, can be according to the demand of different regions generated energy and the requirement of wind speed, many group wind wheel organizations that can vertically be installed in series also can the level parallel connection be organized wind wheel organization more, reach the demand to electric weight, utilize wind energy to greatest extent.
The interlaced best angle in the upper and lower of blade rack; Such design has increased the vertical time that contacts of windward side blade of direction with the wind-engaging side of wind relatively; Wind makes the lifting surface area of windward side blade reach maximum to the acting of blade continuity, and wind promotes fan blade and does the continuity rotation; Compare the utilization ratio that this device has improved wind greatly with equivalents, realized the purpose that gentle breeze just can generate electricity.
Three mutual angle 120 degree of wind-blocking stent are arranged in each aspect of the present invention, and the interlaced best angle of upper and lower layers support.
Claims (10)
1. megawatt level wind power generation system wind energy converter; Comprise base (8), be connected with peripheral pylon (6) on the base (8), it is characterized in that: base (8) top is designed with wind wheel organization; Wind wheel organization comprises vertical rotating shaft (2); The bottom of vertical rotating shaft (2) is connected with the fluted disc (7) of substantially horizontal, and the bottom of vertical rotating shaft (2) is connected with base (8) through compound double track ball bearing (9) respectively with top, is designed with fixed base (3) on the vertical rotating shaft (2); Be connected with blade rack (4) on the fixed base (3), be with the blade that keeps out the wind (5) on the blade rack (4).
2. megawatt level wind power generation according to claim 1 system wind energy converter; It is characterized in that: be designed with generator (10) on the described base (8); Be connected with gear (11) on the generator (10), gear (11) is meshed with fluted disc (7).
3. megawatt level wind power generation according to claim 2 system wind energy converter; It is characterized in that: the described blade that keeps out the wind (5) comprises blade body (15); The both sides of blade body (15) are designed with curved side blade (16); The upper end of blade body (15) is designed with fixed cover (14).
4. megawatt level wind power generation according to claim 3 system wind energy converter; It is characterized in that: described blade rack (4) is fixedly connected with limit spring (12); Limit spring (12) is corresponding with the blade that keeps out the wind (5); Be designed with spring bracket (17) on the limit spring (12), spring bracket (17) is an integral body with limit spring (12), and spring bracket (17) is positioned at the blade that keeps out the wind (5) rear.
5. megawatt level wind power generation according to claim 4 system wind energy converter, it is characterized in that: be designed with bracket tab (13) on the described blade rack (4), limit spring (12) is positioned between the bracket tab (13).
6. megawatt level wind power generation according to claim 5 system wind energy converter, it is characterized in that: described fixed base has screw on (3), and the two ends of blade rack (4) are threaded, and blade rack (4) is threaded with fixed base (3).
7. megawatt level wind power generation according to claim 1 system wind energy converter is characterized in that: described blade rack (4) is multilayer, and the blade rack of lower floor (4) is positioned at the keep out the wind rear of blade (5), upper strata.
8. according to claim 6 or 7 described megawatt level wind power generation system wind energy converters, it is characterized in that: the free end of described blade rack (4) is connected with stop nut (1).
9. megawatt level wind power generation according to claim 8 system wind energy converter; It is characterized in that: be connected with lateral conductor between the free end of described blade rack (4) and the vertical rotating shaft (2), said blade body (15), curved side blade (16) and fixed cover (14) are an integral body.
10. megawatt level wind power generation according to claim 9 system wind energy converter; It is characterized in that: described compound double track ball bearing (9) comprises bearing (18); Be with cover (20) in the composite bearing in the bearing (18); Between the cover (20) ball base is housed in bearing (18) and the composite bearing, ball (19) is housed in the ball base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104588911A CN102434385A (en) | 2011-12-31 | 2011-12-31 | Wind energy conversion device of megawatt-class wind power generation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104588911A CN102434385A (en) | 2011-12-31 | 2011-12-31 | Wind energy conversion device of megawatt-class wind power generation system |
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| Publication Number | Publication Date |
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| CN102434385A true CN102434385A (en) | 2012-05-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011104588911A Pending CN102434385A (en) | 2011-12-31 | 2011-12-31 | Wind energy conversion device of megawatt-class wind power generation system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108825431A (en) * | 2018-06-15 | 2018-11-16 | 骆立宏 | Wind electricity generating system |
| CN110425080A (en) * | 2019-08-13 | 2019-11-08 | 杭州德飙新能源科技有限公司 | A kind of combined type wind driven generator blade |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4537559A (en) * | 1983-09-23 | 1985-08-27 | Christian W. Herrmann | Venturi rotor apparatus for the generation of power |
| CN200993077Y (en) * | 2006-11-30 | 2007-12-19 | 张智坤 | Universal wind tower |
| CN101298862A (en) * | 2007-04-30 | 2008-11-05 | 魏祥之 | Vertical type loose blade wind wheel |
| CN202381255U (en) * | 2011-12-31 | 2012-08-15 | 杨道彤 | Wind energy conversion device of megawatt wind power generation system |
-
2011
- 2011-12-31 CN CN2011104588911A patent/CN102434385A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4537559A (en) * | 1983-09-23 | 1985-08-27 | Christian W. Herrmann | Venturi rotor apparatus for the generation of power |
| CN200993077Y (en) * | 2006-11-30 | 2007-12-19 | 张智坤 | Universal wind tower |
| CN101298862A (en) * | 2007-04-30 | 2008-11-05 | 魏祥之 | Vertical type loose blade wind wheel |
| CN202381255U (en) * | 2011-12-31 | 2012-08-15 | 杨道彤 | Wind energy conversion device of megawatt wind power generation system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108825431A (en) * | 2018-06-15 | 2018-11-16 | 骆立宏 | Wind electricity generating system |
| CN110425080A (en) * | 2019-08-13 | 2019-11-08 | 杭州德飙新能源科技有限公司 | A kind of combined type wind driven generator blade |
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Application publication date: 20120502 |