CN201884204U - Novel wind wheel double-wind wheel counter-rotating wind generating set - Google Patents

Abstract

A novel wind wheel double-wind wheel counter-rotating wind generating set is characterized in that at least more than two flat bar-shaped wind blades, which are respectively in the shape of a semiring or a peach, are coupled on shaft wheels and shaft levers; wind catching surfaces of the wind blades at the same side as the shaft wheels and the shaft levers are skewed relative to each other; a windmill is installed between and integrated with the wind blades in the shape of a semiring or a peach, forming a novel wind wheel; two wind wheels or double multi-stage wheels are arranged on balancing symmetric points of the same main rod; the double wheels catch winds at multiple angles and are rotated relative to each other to convert a three-blade single blade prying force to a steel structure pulling force and a frame jacking force; and a matched mute air compressor is equipped. When the wind power is smaller than the starting wind speed or when there is no wind, a spray gun of the mute air compressor automatically sprays discontinuous gas to push the wind wheels to rotate, thereby generating electricity. When the wind power is larger than the starting wind speed, the operation is automatically stopped, guaranteeing a substantially constant optimal rotating speed ratio and satisfying the requirement of constant-speed constant-frequency grid connection.

Description

The two wind wheels of a kind of new-type wind wheel are to changeing wind power generating set

Technical field

The utility model relates to the two wind wheels of a kind of new-type wind wheel to changeing wind power generating set, belongs to wind generating unit.

Background technique

Wind energy is to have the new energy that exploitation is worth most, wind energy be distribute the widest, nearest from us, take the pollution-free clean energy resource of most convenient, make good use of wind-powered electricity generation to reducing carbon emission, it is great to improve Significance for Environment.Wind energy also is the huge new energy of reserves, and wind energy is inexhaustible, and has minimum relatively development cost, so the development of wind-powered electricity generation is the emphasis of new energy development.

Wind-power electricity generation is mostly used propeller type Big Pinwheel air operated machine at present, generally claims the horizontal axis air operated machine.Before 2002, leafy formula, the wind scoop formula, vertical vortex type, vertical collective wind type, countless, all miss one's aim and promptly abandon.Wind wheel and blade are that the power that wind-driven generator obtains wind energy obtains mechanism as you know, and the ability that wind wheel obtains wind energy will directly influence the generating efficiency of wind-driven generator.At present, wind wheel on the market and blade mainly are " three blade wind wheels " technology of the west tradition of introduction.Though this technology is the traditional theory of wind-driven generator,, find that there are very big mistaken ideas in this theory along with wind-powered electricity generation field knowledgeable people and experts and scholars and my development test for many years.

One, owing to be subjected to the influence of the former Soviet Union (1931) with reference to a large-scale wind driven generator of helicopter screw propeller manufacturing, the design theory that the helicopter propeller is copied in the design of " three blade wind wheels " mechanically always is that it is used.The Der Grundsatz der Maschinen of the Der Grundsatz der Maschinen of propeller and wind wheel is that in essence difference is arranged in fact.

The purpose of design of wind wheel is the mechanical energy that obtains driving the generator rotation for the kinetic energy that utilizes flow air; The purpose of design of propeller is to utilize the buoyancy of air in order to overcome centrifugal force.The kinetic property of wind wheel body is the rotation of blade control wheel shaft, and blade is that active, wheel shaft are passive; The kinetic property of propeller cavitation body is on the contrary with wind wheel, is the rotation of wheel shaft control blade, and wheel shaft is that initiatively blade is passive.The purpose of design difference of these two kinds of machineries, kinetic property is completely contradicted, and can not mention in the same breath.

Its two, the blade geometric shape of " three blade wind wheels " is unreasonable, it is serious to cause blade body to produce the moment loss.

＜1 〉, blade produces the running torque principle down with the wind, is a kind of typical " center of gravity " a kind of " lever principle " in the centre.Point on the vane tip must be the value maximum that produces moment down with the wind, and the point on the root must be to produce the moment values minimum down with the wind, and the application of force at place, leaf top has value.So during the design blade, it is wideer than blade root portion that the leaf top should be designed, so that the moment that makes blade more effectively utilize wind energy to produce at the leaf top.

＜2 〉, because of blade pivots, so the running orbit girth of the point near more apart from the axle center is short more, the running orbit girth of the point far away more apart from the axle center is long more.Therefore, when wind wheel rotated down with the wind, the linear velocity of the point near more apart from the axle center was low more, the linear velocity of the point far away more apart from the axle center is high more, the circular movement characteristic when rotating according to this wind wheel, thus, blade shape should be narrow more the closer to the place, axle center, more at a distance should be wide more apart from the axle center.The width that is the blade every bit should match with the linear velocity of this point, and the wind energy of wide more its acquisition of vane tip also will be big more, and the utilization ratio of wind also can improve.The blade geometric shape of " three blade wind wheels " does not meet above-mentioned principle, its shape mainly is influenced by properller, the thick top spy of properller root, mainly be to consider that entire blade can produce lifting force stably in rotary course, prevent that blade cutting air from radially producing lift not of uniform size and causing vibrations, damage blade.And the wind turbines rotor blade obtains power power is passed to the generator axle center, do not have the problem of balance lift.So the blade geometric shape of " three blade wind wheels " designs not aerodynamic principle, cause blade body to produce the moment loss seriously, wind energy utilization is low.

Its three, be the conventional wind wheel design of representative with " three blade wind wheels ", have mistaken ideas, that is exactly " width of blade, the number of blade and rotating speed are inversely proportional to ".

Undeniable, wide blade is compared with narrow blades, and the resistance that wide blade produces in the middle of rotary course is bigger, and still, wide blade windward side is subjected to wind pressure also big than narrow blades simultaneously.Wind wheel why rotate be because the positive pressure of blade institute wind-engaging greater than the suffered resistance of blade in the wind wheel rotary course, and pressure and resistance are all followed physics pressure and are equaled pressure and multiply by compression area, i.e. F=P*S (F, blade pressure; P, the suffered pressure of blade unit area; S, blade pressurized useful area).Because blast is constant under the equal conditions, so the vane stress size is relevant with effective compression area of blade.Therefore, wide blade wind wheel is more acceptant and absorb wind energy than the narrow blades wind wheel under the equal conditions as can be seen, and the energy that wind wheel obtains is more, the easier rotation of wind wheel, and rotating speed is higher.As a same reason, the wind wheel under the same terms, the different wind energies that obtain of its number of blade are also with difference, and it is more that blade obtains wind energy at most, the easier startup of wind wheel, wind speed round also can be higher.

By above argumentation as can be known, " three blade wind wheels " is incorrect for said " width of blade, the number of blade and rotating speed are inversely proportional to " in the conventional wind wheel design of representative, and it is just right to be directly proportional.

So, the problem that the wind power technology that propeller theory grows up exists is more and more serious, and problems such as manufacture cost is big, generating efficiency is low, rate of fault is high, the poor stability that is incorporated into the power networks are along with the maximization of wind-powered electricity generation unit, these problems are more and more outstanding, and badly influenced the development of wind-powered electricity generation industry.

Wind power technology develops last 100 years, but the wind-powered electricity generation industry is still very tender, and existing problems are a lot, needs subsidy, needs to help, and compares development with other technology and lags behind very much.The development and the guide of theory of technology are undivided, and propeller theory significant discomfort is answered the development of wind power technology, so there is gross error in American-European wind power technology developing direction.

We must radically reform, and with new technology and theoretical developments wind-powered electricity generation industry, significantly reduce wind-powered electricity generation machine cost, significantly improve generating efficiency, the assurance stability that is incorporated into the power networks allows the wind-powered electricity generation machine obtain a large amount of popularization and applications, only in this way could guarantee the healthy and rapid development of wind-powered electricity generation industry.

The model utility content

The utility model purpose is in order to solve the technical barrier that prior three-blade formula wind-power electricity generation exists:

That is: innovation of wind energy type and innovation type

The task of wind energy development utilization is will rely on wind energy plant to finish entirely, therefore wind energy plant how " performance " highly determine the effect and the success or failure of wind energy development action, how to make the better performance of wind power equipment become the primary core of the good and fast development of wind-powered electricity generation industry already, what therefore we can say innovation wind-powered electricity generation development model is exactly to innovate wind power equipment at all.

In current large-scale wind electricity is built, " cost height, effectiveness is low, fault is many, function is few, expansion is difficult " is long-term complaint of each related fields and the 5 big real presentations of generally acknowledging, this also is simultaneously to constitute 5 not high greatly main causes of wind-powered electricity generation " production capacity surplus " presentation and investment value.

＜1 〉, cloverleaf along stretching, is fixed in center with sled power by single leaf, and the blade edge is stretched long more, and the center petiole is fixing must to be increased, and peripheral layout is just big more, not only can not work the wind effect of catching, and plays the resistance negative effect on the contrary, causes blade body to produce the moment loss seriously.Under the identical condition of wind-force intensity, the single blade overlength of current large-scale wind electricity strengthens the reduction that the direct result that designs will cause its wind wheel rotational speed, cause gearbox drive ratio to strengthen, the overlength blade also will cause obviously manifesting of tower tube effect and jarring effect; Length of blade strengthens the Structural Strength Design that inevitable requirement is strengthened its blade root portion, and [1.5-2 megawatt blade has reached about 18t at present therefore also will to cause blade volume weight huge; And 3 megawatts have reached 30t; And 5 megawatts ... 10 megawatts should 50t according to inertial thinking ... 100t? )], start rotation because will cause under low wind speed state, being difficult to drive overweight blade due to the inertia again, therefore be difficult to form more investment return and obtain space-time.In addition, the single of control methods is to form another major reason of rendeing a service low presentation, because adopt the control methods that the commentaries on classics oar rushes down wind will cause high wind to increase losing of earning capacity constantly again at once in the moment of nature wind increases, it is obvious further that this especially will show under million-10 watts of 3-5 and above design power thereof.

＜2 〉, the polygene technology blade of cloverleaf fault can not be regulated or minor adjustments only, being limited to 3-7 level wind could generate electricity, the above overburdening of near gale is burnt motor, the global design form of existing large-scale wind electricity unit causes its regulation and control demand complexity, and is of a great variety, even extends to each blade with fair wind in the regulation and control at any time of attitude, regulating and controlling mechanism, structure and component demand are many, thereby cause the increase of fault chance of occurrence; And its global design form causes it to require the ability category well beyond the conventional machinery equipment unit for the quality of the material of most component and manufacturing and specification requirement, non-high price can be competent at imported product, and this is the reason that causes cost high.Large-scale wind wheel rotational speed the increasing substantially of the gear box ratio design requirement that causes of slowing down also is to form the high cause (complex structure is again to cause one of high cause of cost) of fault.In addition, compare with the technology cradle, the applied environment of high and cold, high strong wind, the high strong sunlight of China also directly for the unsettled arm of force wind wheel blade of overlength (macromolecular material) with is connected mechanical structure and durability thereof and uses formation threat greatly (even in the technology cradle, often hear that also accident disconnected or that split takes place blade), also be the inducement that causes fault many and the high-altitude of power equipment is provided with (cold and hot acute variation influence of summer in high-altitude winter and inconvenient regular maintenance) and yaw system carries the electric wire rotation to the wind mode.

＜3 〉, cloverleaf gravity does not have the running effect of inertia at the internal diameter center, can not regulate irregular gust influence, causes rotating speed inhomogeneous, and spread of voltage can not directly be gone up electrical network, needs to increase noble charging and discharging equipment, increases cost and kwh loss.Change an oar and change the huge range variation that control methods of exerting oneself are difficult to satisfy application demand with the wind-force intensity of advantageization as only adopting, thereby will reduce the degree of investment return.In addition, attack the formed regulation and control accuracy of commentaries on classics oar control methods of large-scale blade angle and be worth discussing by changing wind-force with effect, itself or become and cause one of unsettled origin cause of formation of current large-scale wind electricity?

＜4 〉, the technology of expanding the difficult origin cause of formation does not also have direct high-altitude weight lifting machine more than 100 meters at present, is difficult to develop large-scale wind wheel yet.The more large scale development of wind-powered electricity generation unit is to realize efficiently, at a low price, simple and direct, convenient design, produce, install, use with stabilization and move unique valid approach and means, towards bigger ability, more high-effect, the expansion expection of stronger applicability also is to support and the motive force that promotes the more extensive development of wind-powered electricity generation industry, but from the above-mentioned analysis of the configuration of existing large-scale wind electricity unit and structure as can be seen, the effort difficulty that realizes above-mentioned many functions and ability need has bigger expanding space, because the problem of another related fields can form mutual restriction in overcoming the process of one of them defective, be difficult to make the best of both worlds, as: the effort of further amplifying its Blade Design specification space will cause weight, the higher generation of cost and rate of fault, and the perfect effort of some functional defect (as: be provided with in the high-altitude large-scale multiple generator system) will can't realize forever.

＜5 〉, overall economic efficiency is low, cost is high.The wind-powered electricity generation unit of any morphotype no matter, the size of the rotary driving arm of force that its area of effectively collecting folk songs, the ability of collecting folk songs and the intensity with fair wind that can form on the area with fair wind in unit and the position of exerting oneself with fair wind can form are to determine the wind wheel ability immediate cause just of exerting oneself.From the blade of existing form cloverleaf large-scale wind electricity unit, it is the mode of exerting oneself with fair wind that adopts angle-of-attack, therefore blade is difficult to form the design of the more roomy specification of breadth with fair wind, and the whole increasing amount of area effectively with fair wind that the mode that adopts overlength to amplify single wind wheel blade length can form is very limited, is difficult to the area design with fair wind of single wind wheel blade very big; And on the weight of overlength blade and the distributional pattern that forms exert oneself with fair wind area and the arm of force with fair wind, existing large-scale blade but is to concentrate on blade root portion or approach blade root portion and part also presents circle near the weight of 50-60%, main effect is the enabling capabilities that forms the overlength root of blade, do not have to form effect of exerting oneself with fair wind and area with fair wind, and to cause forming the actual effectively leaf tip of running torque be that so narrow (moment on the physics (M) is instigated and promoted the power (F) that object rotates and multiply by the arm of force distance (L) of rotating shaft: promptly: M=F * L) can form big rotary arm away from main shaft.As seen, the design of the major diameter of current wind wheel does not cause the big ability of exerting oneself of corresponding ratio, thereby is difficult to form increase substantially (this also is simultaneously to cause rendeing a service one of low, that expansion is difficult origin cause of formation) of effective power designs.Formed equipment complex cost must be very high and can not form under the very big condition in equipment unit power output ability, because existing equipment large-scale wind electricity complex structure,, each unit has entirely thereby all will forming the tool of supporting structure, operation function, adjusting control, transmission equipment of All aspects of etc.

In order to solve an above-mentioned difficult problem, through research repeatedly, integrated use practical experience, simulation have proposed a kind of technological scheme of new shape.Comprise supporting frame, be located at the wind wheel group on the supporting frame.Purpose of the present invention, just provide the two wind wheels of a kind of new-type wind wheel to changeing wind power generating set, and above five big difficult point and innovations have been overcome, its characteristics are that two wind wheels are installed on a balanced, symmetrical point on the mobile jib, or multistage pair of wind wheel, and transform cloverleaf list leaf sled power and be part-annular or peach shape steel structure pulling force for the flat bar air blade, framework top power, rotating speed and dynamics have been increased, its project organization also has the ability of anti-harsh weather, the quiet air compressor that outfit is complementary, when wind-force less than starting wind speed or when calm, will be automatically spray step gas and promote wind wheel and rotate and generating work, when wind-force just stops its work when starting wind speed automatically by the spray gun of quiet air compressor, thereby kept substantially invariable optimum speed ratio, satisfied the requirement of being incorporated into the power networks of constant-speed and constant-frequency.

The technological scheme that its technical problem that solves the utility model adopts is: the two wind wheels of a kind of new-type wind wheel are to changeing wind power generating set, has the flat stripe shape air blade more than two at least, be part-annular respectively or the peach shape is bound up on the arbor wheel, and its arbor wheel, the relative skew of the wind-catching surface of the air blade of axostylus axostyle homonymy, one of middle installation has two at least with the windmill of upper blade and the wind wheel of its connection one.

Further:

The angle of the wind-catching surface skew of described flat bar air blade is greater than 0 degree.

Arbor wheel, windmill arbor wheel are separately fixed on the balanced, symmetrical point on the same mobile jib two on anti-generator axostylus axostyle, when two wind wheels are caught wind and are produced when changeing, so the generator separately that two wind wheel is driven will be simultaneously towards a direction rotation and synchronous generator.

The two wind wheels of described new-type wind wheel are equipped with the quiet air compressor that is complementary to changeing on the wind power generating set, when wind-force less than starting wind speed or when calm, will be automatically spray step gas and promote wind wheel and rotate and generating work, when wind-force just stops its work when starting wind speed automatically by the spray gun of quiet air compressor.

The principle and the advantage of utilization:

One, the utilization air blade is part-annular or the peach shape is bound up on two arbor wheels, the relative skew of the wind-catching surface of the fan blade of axostylus axostyle homonymy, and in the middle of fan blade is part-annular or peach shape, a windmill is installed and is connect one, form the wind wheel framework, transforming cloverleaf list leaf sled power is steel structure pulling force, middle windmill top power; Thereby reach the mechanics standard that matches, have the ability of anti-harsh weather;

Two, use the flat bar air blade to be part-annular or peach shape and air vane and install by frontal, this wind wheel just just changes clockwise; Install by the reverse side direction when the flat bar air blade is part-annular or peach shape and air vane, this wind wheel just counter-rotating reverses, and has played the balance bracket strength;

Three, use fan blade to be part-annular or the middle wind wheel that a windmill connection one is installed of peach shape, and two wind wheels of installation form transferring drive generator synchronous generator separately simultaneously on a balanced, symmetrical point on the mobile jib.Than present popular on the market wind power generating set, on equal basis, increased the generating capacity more than a times;

Four, utilization has the flat stripe shape air blade more than two at least, be part-annular respectively or the peach shape is bound up on the arbor wheel, and its arbor wheel, the relative skew of the wind-catching surface of the air blade of axostylus axostyle homonymy make the point on its vane tip produce the value maximum of moment down with the wind, and the point on the root is producing the moment values minimum down with the wind, thereby make blade shape narrow more the closer to the place, axle center, wide more more at a distance apart from the axle center, so, more effectively utilize wind energy in the relative skew of blade, to produce best torque;

Five, the making of blade is not subjected to the restriction (metal and nonmetal all can and needn't modeling) of material;

Six, project organization is to draw the other support in top, back mobile jib before longspan " pyramid support " support, the balance pressurization, it is let nature take its course, adjust wind direction automatically by wind-force, turning to automatically of turning with the wind facingd the wind, need not wind direction regulating device, saved yaw device and change and starched the destruction that the hysteresis quality of moment device is brought, and made structure obtain simplifying, cost is reduced, firm safe, production safety;

Seven, utilization is equipped with the quiet air compressor that is complementary, when wind-force less than starting wind speed or when calm, will be automatically spraying step gas by the spray gun of quiet air compressor promotes wind wheel and rotates and generating work, when wind-force just stops its work when starting wind speed automatically, guarantee the constant of rotating speed, satisfy the requirement of being incorporated into the power networks of constant-speed and constant-frequency, as long as and the place that thinking has super highway or Class I highway to lead to just can be developed along the road, there is no need ' riding on a horse to enclose ', be not subjected to the restriction of zone and geographical environment; Can develop in the lump with national intelligent grid;

Eight, whole low cost of manufacture, it is low that the simple fault rate is adjusted in installation.The structural design material all adopts homemade common iron, and the low price cost is low, is with capacity cost 1/3rd approximately.

Description of drawings

Fig. 1 is a kind of concrete structure side of the present invention diagrammatic sketch.

Fig. 2 is the front view of Fig. 1.

Fig. 3 is the stereogram of wind wheel among Fig. 2.

Among the figure: [1] lightning arrester; [2] wind speed wind direction sensor; [3] mobile jib top and top; [4], [5] wind-catching surface; [6], [7] arbor wheel; [8] bearing; [9] windmill arbor wheel; [10] windmill; [11] flat stripe shape air blade; [12] just changeing wheel with the wind; [13] counter-rotating is taken turns against the wind; [14] axostylus axostyle; [15] infinitely variable transmission; [16] generator; [17] rolling bearing; [18] pallet and direction controller; [19] mobile jib middle and lower part; [20] tower mobile jib; [21] center mobile jib sleeve pipe; [22] tail vane; [23] framework; [24] cross supports; [25] windmill circle; [26] air blade is part-annular or peach shape central point; [27], [28] gas holder and quiet air compression are equipped with device mutually.

Embodiment

Below in conjunction with the accompanying drawings the present invention is described in further detail.

The two wind wheels of a kind of new-type wind wheel as shown in Figure 1 are fixed on the axostylus axostyle [14] commentaries on classics two wheel shafts of wind power generating set [6], [7], have at least flat stripe shape air blade [11] more than two to be part-annular respectively or the peach shape is bound up on arbor wheel [6], [7] and the axostylus axostyle [14], and wind-catching surface [4], [5] relative skew of arbor wheel [6], [7] and the flat stripe shape air blade [11] of axostylus axostyle [14] homonymy, the angle of skew is greater than 0 degree.On the windmill arbor wheel [9] in the middle of the axostylus axostyle [14] windmill [10] is installed, windmill circle [25] is part-annular with fan blade or peach shape central point [26] connects (in conjunction with shown in Figure 2) mutually, cross support [24] is bound up on windmill arbor wheel [9], wind-catching surface [4], [5] and fan blade and is on part-annular or the peach shape central point [26], at center mobile jib sleeve pipe [21] two generators [16] and infinitely variable transmission [15] are installed, will just changeing with the wind, wheel [12], counter-rotating contrary wind wheel [13] are installed in respectively on the axostylus axostyle [14].Framework [23] is enclosed within on the mobile jib, the top of mobile jib and top [3] install a wind speed wind direction sensor [2] and lightning arrester [1] again.Pallet on the tower mobile jib [20] and direction controller [18] by the just commentaries on classics of rolling bearing [17] control framework [23] the inside take turns with the wind [12], counter-rotating against the wind wheel [13] it is complementary with the windward side all the time, thereby make all wind-catching surfaces [4] of wind wheel, [5] angle be in the optimum position.Also can take tail vane [22] to guarantee that wind wheel and windward side are complementary.An accumulator tank that is complementary and quiet air compression [27], [28] are installed again, when calm or when starting the wind-force of wind speed, automatically start the air compressor device work in accumulator tank and quiet air compression [27], [28], intermittently spray gas by spray gun and promote two wind wheels and rotate and generate electricity.

Claims (4)

1. the two wind wheels of new-type wind wheel are to changeing wind power generating set, it is characterized in that: have the flat stripe shape air blade more than two at least, be part-annular respectively or the peach shape is bound up on the arbor wheel, and its arbor wheel, the relative skew of the wind-catching surface of the air blade of axostylus axostyle homonymy, one of middle installation has two at least with the windmill of upper blade and the wind wheel of its connection one.

2. the two wind wheels of a kind of new-type wind wheel according to claim 1 is characterized in that changeing wind power generating set: the angle of the wind-catching surface skew of described flat bar air blade is greater than 0 degree.

3. the two wind wheels of a kind of new-type wind wheel according to claim 1 are to changeing wind power generating set, it is characterized in that: described windmill is arranged on the windmill arbor wheel, and described arbor wheel, windmill arbor wheel are separately fixed on the balanced, symmetrical point on the same mobile jib two on anti-generator axostylus axostyle.

4. the two wind wheels of a kind of new-type wind wheel according to claim 1 is characterized in that changeing wind power generating set: the two wind wheels of described new-type wind wheel are equipped with the quiet air compressor that is complementary to changeing on the wind power generating set.

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