CN105089932A - Centrifugal speed regulating mechanism for automatically regulating elevation angles of wind-driven generator blades - Google Patents
Centrifugal speed regulating mechanism for automatically regulating elevation angles of wind-driven generator blades Download PDFInfo
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- CN105089932A CN105089932A CN201410208902.4A CN201410208902A CN105089932A CN 105089932 A CN105089932 A CN 105089932A CN 201410208902 A CN201410208902 A CN 201410208902A CN 105089932 A CN105089932 A CN 105089932A
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- driven generator
- elevation angle
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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
- Y02E10/72—Wind turbines with rotation axis in wind direction
Abstract
The invention provides a centrifugal speed regulating mechanism for automatically regulating elevation angles of wind-driven generator blades. The centrifugal speed regulating mechanism comprises a shell and a helical gear set, wherein a first transmission shaft penetrates the shell in a linkage manner and is provided with a sliding block and a driven block in a penetrating manner; the sliding block is provided with at least one centrifugal unit; each centrifugal unit is provided with two pull rods, one of the two pull rods is fixedly arranged on the shell, and the other pull rod is connected to the driven block which is provided with a rack; the helical gear set is provided with a rotating shaft perpendicular to the rack and a second transmission shaft corresponding to the first transmission shaft; the rotating shaft is provided with a spur gear engaged with the rack and a first helical gear; and the second transmission shaft is provided with a second helical gear which is correspondingly engaged with the first helical gear. The angles of the blades can be adjusted along with wind strength till the blades are susceptible to a wind speed and generate torque. When the wind speed is too high and exceeds a critical value, the blades are rotated to be at an angle so as to bear small torque, and then the rotating speed is inhibited from increasing, so that a wind-driven generator is protected and can generate electricity safely at a high wind speed.
Description
Technical field
The invention provides the self-adjusting centrifugal governor mechanism in a kind of blade of wind-driven generator elevation angle, espespecially a kind of under original state, the elevation angle of blade produces the angle of moment of torsion in being subject to wind speed, when wind-force increases gradually, the elevation angle of blade can be adjusted gradually along with wind speed, make blade can be adjusted to wind-force size and be subject to wind speed and the angle producing moment of torsion, and when wind speed is too high, still keep rotational speed under certain restriction rotating speed, be unlikely to make wind-driven generator damage because centrifugal force is excessive, simultaneously when typhoon comes, also can the wind-driven generator of simple and easy positive braking.
Background technique
Press, global warming phenomenon is gradually serious in recent years, and countries in the world are for paying attention to this subject under discussion, the environmental strategies such as confused promotion carbon reduction, and then the application of research and development alternative energy source and the renewable sources of energy, therefore utilize the power generating equipment of the renewable sources of energy, comparatively incline with wind-power electricity generation is first-selection a few days ago; But wind speed is difficult to control, and excessive or too small wind speed all cannot make wind-driven generator normal power generation, and wind-driven generator is under different wind speed, the efficiency of its rotating speed and generating is also not quite similar, therefore how effectively can utilize wind energy power, is the subject under discussion that all circles a few days ago widely discuss.
The elevation angle of blade of wind-driven generator, length and water conservancy diversion area, all affect the rotating speed of blade, under identical wind speed, the blade elevation angle is larger, and moment and resistance of air also will increase, otherwise the blade elevation angle is less, and moment and resistance of air can be less; Therefore with different wind speed, make blade cause good generating efficiency with better turn up, each wind speed need being considered and change the elevation angle of blade, length and water conservancy diversion area, wherein, causing for being easier to reach with the elevation angle changing blade.
But, through looking into No. 101134616th, TaiWan, China " fan blade of wind driven generator inclination angle automatic adjusting mechanism " patent application case, refer to itself Fig. 8 and Figure 11, the main pump unit (i.e. oil pressure pump) that relies on drives by the speed discrepancy of transmission component and gear unit, this actuating unit is made to reverse this fluted disc supply oil pressure liquid, further adjust the suitable elevation angle that this flabellum is corresponding wind speed, in other words, this existing invention is when natural wind drives this flabellum and the first housing synchronous rotary, the speed discrepancy N2-N1 that this pump unit produces by different wind speed drives, change the pressure value P of its supply oil pressure liquid, to reverse the angle θ of this coupling component and fluted disc, and reach and cause effect that mechanical type automatically increases or decreases this flabellum elevation angle β.
Aforementionedly change by pump unit the oil pressure liquid that its oil pipe inputs to oil hydraulic cylinder, and produce the structure of different pressures value, there is the disappearance being difficult to accurate management and control oil pressure liquid output quantity in practical operation, causes overall structure comparatively complicated, and still have unstable and inapplicable misgivings.
In addition, during for avoiding wind speed excessive, this flabellum will be easy to fracture because rotating speed is too fast, make generator overheating what is more and the situation of burning, existingly separately provide a kind of wind-driven generator, it arranges the electric drive reducing gear of a corresponding flabellum between pin joint seat with housing, the rotating speed slowing down flabellum or housing is forced time excessive for wind speed, this electric drive reducing gear obvious is that the constant speed maintaining flabellum or housing rotates, just must continue to play decelerating effect, this quite will expend electric power, and this electric drive reducing gear continued deceleration is damaged easily causing overheated, if when wind speed is crossed strong, this electric drive reducing gear still cannot effectively stop flabellum or housing to rotate, this electric drive reducing gear not only can be caused easily to damage inefficacy, also can there be the problems such as flabellum fracture because slowing down.
In view of this, we inventor studies wind-driven generator with great concentration further, and sets about carrying out researching and developing and improveing, and the phase is done with better establishing to solve the problem, and is having appearance of the present invention after constantly testing and revising.
Summary of the invention
Whence is, the object of the invention is to solve the flabellum elevation angle automatic adjusting mechanism of existing wind-driven generator because utilizing the mode of pump unit, real storage has the disappearance being difficult to accurate management and control oil pressure liquid output quantity, also causes overall structure comparatively complicated, and still has unstable and inapplicable misgivings; Moreover, when wind speed is crossed strong, or when typhoon, existing wind-driven generator maintains constant speed by electric drive reducing gear and rotates, or carrying out pressure stops, this will cause excrescent electric power to be consumed, this electric drive reducing gear overheated and burn, flabellum damage fracture, and the problems such as extra maintenance service expense need be born.
For achieving the above object, the technical solution used in the present invention is:
A kind of self-adjusting centrifugal governor mechanism in the blade of wind-driven generator elevation angle, it is characterized in that: this centrifugal governor mechanism comprises: a housing, its interlock wears one first transmission shaft, this first transmission shaft is equipped with a slide block and a Slave Block, this slide block is provided with at least one centrifugal unit, and described centrifugal unit is respectively equipped with two pull bars, and wherein a pull bar is fixedly arranged on this housing, another pull bar is connected to this Slave Block, and this Slave Block is provided with a tooth bar; And a bevel gear set, it is provided with one to correspond to the first transmission shaft second driving shaft perpendicular to the rotating shaft and of this tooth bar; This rotating shaft is provided with spur wheel and one first helical gear of this tooth bar of engagement; This second driving shaft is provided with corresponding this first helical gear second helical gear of engagement.
Wherein, described centrifugal unit also comprises an elastic component and a mass block, and this elastic component is located on this slide block, and described mass block is located at described elastic component end, and described mass block is connected to described pull bar.
Wherein, this slide block is provided with two centrifugal units.
Wherein, this housing is also provided with the guide groove of a corresponding tooth bar, and this tooth bar end moves in this guide groove.
Wherein, this housing is also provided with a pin joint seat, and this first transmission shaft is hubbed at this pin joint seat in one end of this Slave Block.
Wherein, this housing is also provided with a flange, and a described wherein pull bar is fixedly arranged on the flange of this housing.
Wherein, this housing is also provided with a draw-in groove, is provided with a Flexible element in this draw-in groove, and this Flexible element connects one and controls pin; And this Slave Block is provided with the corresponding groove controlling pin.
Wherein, this outside is also provided with a mechanical type braking device, and this mechanical type braking device controls whether support this housing.
Wherein, also comprise a blade pedestal, it connects and is linked in this housing, and this second driving shaft is arranged in this blade pedestal, and this second driving shaft is provided with a fluted disc in this blade pedestal inside; This blade pedestal is equipped with plural blade, and described blade is respectively equipped with the teeth portion of corresponding fluted disc in the inner one end of blade pedestal.
Wherein, this first transmission shaft connects an electricity generating device.
By means of said structure, when the rotating speed of this shell block is zero, the elevation angle of these blades produces the angle of moment of torsion in being subject to wind speed, effectively can reduce threshold wind velocity, and when blade by wind, under blade angle is constant, the moment of torsion be subject to increases, blade pedestal rotating speed can be increased, blade pedestal will drive centrifugal governor mechanism to rotate, centrifugal governor mechanism connects this first transmission shaft by a key body and rotates, and the first transmission shaft by rotation to be generated electricity by electricity generating device, and during the first drive axis, the centrifugal force of mass block will increase and make the spacing of mass block and the first transmission shaft be D, due to described centrifugal unit centrifugalization, therefore Slave Block will be pulled by pull bar, and then pull tooth bar, and tooth bar will rotate spur wheel with by this first helical gear of axis of rotation, and then drive the second helical gear and make second driving shaft band active toothed disk, and the teeth portion of moving vane during fluted disc rotation, will be with, to adjust the blade elevation angle, the moment of torsion making blade bear wind-force reduces, and then compacting rotating speed rises, reach protection wind-driven generator, simultaneously also can the function of safe power generation when wind speed height.
In addition, centrifugal unit comprises an elastic component and a mass block, and this elastic component is located at this slide block, and described mass block is located at described elastic component end, and described mass block is connected to described pull bar, with when rotating speed of the present invention is greater than described initial speed, these mass blockes produce centrifugal action because of rotator inertia, will relatively away from this first transmission shaft, described space D increases, these elastic components will be stretching shape, and when rotating speed of the present invention is less than described initial speed, these mass blockes then because of centrifugal force weakens will relatively close to this first transmission shaft, described space D reduces, be with these pull bars according to its mass block connected relatively this first transmission shaft close to or away from, make this Slave Block of push-and-pull and rack displacement, and then order is linked in the spur wheel rotation of this tooth bar, and make intermeshing first helical gear, second helical gear, and through the synchronous start of fluted disc that this second driving shaft connects, finally, when the angle value of this fluted disc of torsion is θ, these blades and teeth portion thereof be corresponding pivotable elevation angle β then, not only really reduce starting wind velocity, good electricity generation efficiency can also be reached.
The mechanical type braking device of outside, for to pulling this housing and prevent this centrifugal governor mechanism from rotating through soon, make itself and prior art in comparison, this mechanical type braking device is directly butted on this outside, the diameter of this housing is large and be easy to brake, and the facts of damaging to avoid excessively rotating occurs.
This body also can, by means of arranging an empennage, make empennage be subject to aspect effect and make body swing, and then makes these blades in direction windward.
The present invention separately provides a kind of blade of wind-driven generator elevation angle self-adjusting centrifugal governor mechanism, it adopts existing blade, make the design need not carrying out corresponding for centrifugal governor mechanism, it is more provided with a draw-in groove in housing, be provided with a Flexible element in this draw-in groove, this Flexible element connects one and controls pin; And this Slave Block is provided with the corresponding groove controlling pin; Therefore, when blade rotates in certain rotating speed by wind speed produces moment of torsion, same drive housing and the first drive axis, but because controlling pin insert group in the groove of Slave Block, therefore centrifugal unit cannot start, the mechanism this means, adjusting the blade elevation angle will not operate; And when rotating speed reaches critical value, the centrifugal force of control pin is made to be greater than the elastic force of Flexible element, and order controls the groove that pin leaves Slave Block, then now centrifugal unit gets final product start and moves this Slave Block, and then as mentioned above, the elevation angle of unexpected rotation blade, and then the object reaching rapid reduction moment of torsion and rotating speed.
Therefore rely on the setting controlling pin, coordinate centrifugal governor mechanism, rely on and can be installed on general blade design, rely on the advantage can possessing former blade design, and prophyll sheet need not be redesigned.
By above-mentioned explanation and setting, obvious the present invention mainly has following several advantage and effect, and hereby details are as follows one by one:
1. the present invention relies on described centrifugal unit and bevel gear set to cooperatively interact, when this blade pedestal by wind effect, by this housing of drive and centrifugal unit synchronous rotary, make described centrifugal unit because of centrifugal action relatively this first transmission shaft close to or away from, these pull bars then make this slide block, Slave Block and rack displacement, and then rely on this bevel gear set to change these blade elevations angle, and order about this electricity generating device generation electric power, anticipate and obtain and automatically adjust the described elevation angle according to nature wind speed with mechanical type, to reach the efficiency promoting wind-power electricity generation; In addition, the moment of torsion relying on the adjustment elevation angle that blade also can be made to bear wind-force reduces, and then compacting rotating speed rises, and reaches protection wind-driven generator, simultaneously also can the function of safe power generation when wind speed height.
2. cannot adjust compared to the existing fixed fan blade elevation angle, when wind velocity lift, rotating speed also increases thereupon, thus cause fan stall or need continue to slow down to blade with electric drive reducing gear and have the misgivings of damage, the present invention can adjust the blade elevation angle by mechanical type automatically according to wind speed, add this mechanical type braking device and be directly butted on this outside, the diameter of this housing is large and area of contact is large, can increase frictional force and be easy to brake, obvious the present invention has the advantage such as applicability and serviceability widely.
3. the present invention can adopt the blade of corresponding centrifugal governor mechanism, thus the shape of blade need through threshold wind velocity, to promote gradually with wind speed and be easy to produce the angle of moment of torsion in each angle of swing, and the design of the excessive angle making moment of torsion reduce of wind speed; And if palpus adopts existing blade, then by controlling the setting of pin, make the groove departing from Slave Block in turn up critical value time control cotter, and then make the elevation angle of unexpected rotation blade, and then reach the object of rapid reduction moment of torsion and rotating speed, by means of being applicable on general blade design, to possess the advantage of former blade design, and prophyll sheet need not be redesigned.
Accompanying drawing explanation
Fig. 1 is the perspective exploded view () of first embodiment of the invention;
Fig. 2 is the perspective exploded view (two) of first embodiment of the invention;
Fig. 3 is the three-dimensional appearance schematic diagram of first embodiment of the invention;
Fig. 4 is the cross-sectional schematic of Fig. 3 A-A position;
Fig. 5 is the D structure schematic diagram of the centrifugal governor mechanism of first embodiment of the invention;
Fig. 6 is the illustrative view () of the centrifugal governor mechanism of first embodiment of the invention;
Fig. 7 is the illustrative view (two) of the centrifugal governor mechanism of first embodiment of the invention;
Fig. 8 be first embodiment of the invention in time operating, the corresponding illustrative view of this blade and fluted disc;
Fig. 9 is the relation schematic diagram of the present invention and the existing elevation angle and rotating speed;
Figure 10 is the relation schematic diagram of rotating speed of the present invention and wind speed;
Figure 11 is the using state schematic diagram that first embodiment of the invention is provided with mechanical type braking device;
Figure 12 is the D structure schematic diagram of the centrifugal governor mechanism of second embodiment of the invention;
Figure 13 is the perspective exploded view of the centrifugal governor mechanism of second embodiment of the invention;
Figure 14 is the cross-sectional schematic of second embodiment of the invention;
Figure 15 is that the control pin centrifugal force of second embodiment of the invention is greater than Flexible element elastic force and departs from the illustrative view of groove;
When Figure 16 is second embodiment of the invention control pin disengaging groove, the schematic diagram of centrifugal unit moment start.
Description of reference numerals: 1 centrifugal governor mechanism; 11 housings; 111 first transmission shafts; 112 flanges; 113 guide grooves; 114 pin joint seats; 115 slide blocks; 116 Slave Blocks; 1161 grooves; 117 tooth bars; 118 key bodies; 119 draw-in grooves; 12 centrifugal units; 121a, 121b pull bar; 122 elastic components; 123 mass blockes; 13 bevel gear set; 131 rotating shafts; 1311 spur wheels; 1312 first helical gears; 132 second driving shafts; 1321 second helical gears; 1322 fluted discs; 2 bodies; 21 empennages; 3 electricity generating devices; 31 central shafts; 4 blade pedestals; 41 shell blocks; 42 fluted discs; 43 blades; 431 teeth portion; 5 mechanical type braking devices; 51 brake components; 52 brake blocks; 6 Flexible elements; 61 control pin.
Embodiment
About the technological means of we inventor, hereby lift several preferred embodiments and coordinate graphic in being hereafter described in detail, for an ancient unit of weight being understood in depth and admitting the present invention.
Please first consult shown in Fig. 1 to Fig. 4, its first embodiment of the present invention, the invention provides the self-adjusting centrifugal governor mechanism in a kind of blade of wind-driven generator elevation angle, this centrifugal governor mechanism 1 is installed in a body 2, and connects electricity generating device 3 and a blade pedestal 4 respectively, this electricity generating device 3 has a central shaft 31, this blade pedestal 4 is equipped with plural blade 41, and this body 2 is more provided with an empennage 21, makes these blades 41 in direction windward for swing, wherein, this centrifugal governor mechanism 1 comprises:
At least one housing 11, it is provided with one first transmission shaft 111, flange 112, guide groove 113 and a pin joint seat 114, this first transmission shaft 111 is equipped with slide block 115 and a Slave Block 116, and one end of this first transmission shaft 111 is hubbed at this pin joint seat 114, this the first transmission shaft 111 the other end connects this central shaft 31, this slide block 115 is provided with at least one centrifugal unit 12, and (it is most preferred embodiment that two centrifugal units 12 are hereby lifted in this case, because promoting overall structure stability, described centrifugal unit 12 is symmetrically set in the both sides of this first transmission shaft 111);
Described centrifugal unit 12 is respectively equipped with two pull bar 121a, 121b, one pull bar 121a is fixedly arranged on the flange 112 of this housing 11, another pull bar 121b is connected to this Slave Block 116, this Slave Block 116 is provided with the tooth bar 117 that a correspondence is assembled in guide groove 113, this tooth bar 117 is a tooth bar, and this tooth bar 117 end is positioned at the movement of this guide groove 113, again, described centrifugal unit 12 comprises elastic component 122 and a mass block 123, this elastic component 122 is located at this slide block 115, this mass block 123 is located at this elastic component 122 end and is connected to described pull bar 121a, 121b, this first transmission shaft 111 further and between this housing 11 has a key body 118, both are made to keep synchronous rotary, and
One bevel gear set 13, it is provided with one to correspond to the first transmission shaft 111 second driving shaft 132 perpendicular to the rotating shaft 131 and of this tooth bar 117; This rotating shaft 131 is provided with spur wheel 1311 and one first helical gear 1312 of this tooth bar 117 of engagement; This second driving shaft 132 is provided with the second helical gear 1321 of corresponding this first helical gear 1312 of engagement.
And blade pedestal 4, it connects and is linked in this housing 11, and this second driving shaft 132 is arranged in this blade pedestal 4, and this second driving shaft 132 is provided with a fluted disc 1322 in this blade pedestal 4 inside; Described blade 41 is respectively equipped with the teeth portion 411 of corresponding fluted disc 1322 in the inner one end of blade pedestal 4.
Rely on, when the rotating speed of this blade pedestal 4 is zero, the elevation angle of these blades 41 produces the angle of moment of torsion in being subject to wind speed, effectively can reduce threshold wind velocity, and when the present invention is by natural wind effect, wind-force will produce moment of torsion to blade 41, and then make blade pedestal 4 rotate, and about the actual operation of this centrifugal governor mechanism 1, continuing sees shown in Fig. 4 and the 5 to 8 figure, when these blades 41 drive this blade pedestal 4 to rotate because of the moment of torsion of wind blows, suppose that the initial speed of this blade pedestal 4 is N0, because this blade pedestal 4 is connected to this housing 11, therefore housing 11 will synchronous rotary as shown in Figures 3 and 4, and housing 11 is connected to this first transmission shaft 111 by a key body 118, therefore housing 11 is also by drive first transmission shaft 111 synchronous rotary, make housing 11, first transmission shaft 111 and blade pedestal 4 have same rotational speed N0, and the first transmission shaft 111 will be transmitted in electricity generating device 3 by central shaft 31 when rotating generates electricity, also centrifugal unit 12 also synchronous rotary described in military order when simultaneously the first transmission shaft 111 rotates, also be, this two pull bar 121a, 121b drives described mass block 123 to rotate around this first transmission shaft 111, and increase is made mass block 123 outwards skew and be D with the spacing of the first transmission shaft 111 by the centrifugal force of mass block 123 when rotating, and mass block 123 will pull Slave Block 116 by pull bar 121b, and then pull tooth bar 117, this tooth bar 117 is made to drive spur wheel 1311 to rotate, namely spur wheel 1311 drives the first helical gear 1312 dynamic with rotating by rotating shaft 131, because the second helical gear 1321 and the first helical gear 1312 engage each other, therefore the second helical gear 1321 will rotate by the first helical gear 1312 rotates, and then be transmitted in second driving shaft 132 and make fluted disc 1322 rotate, and rely on the teeth portion 411 of fluted disc 1322 with moving vane 41 to be rotated, and then the elevation angle of adjustment blade 41.
If and described centrifugal unit 12 is synchronous with rotating speed N1 turn, and this rotating speed N1 is when being greater than described initial speed N0, refer to Fig. 6 illustrated, these mass blockes 123 are because of centrifugal force increase, namely these mass blockes 123 will relatively away from this first transmission shaft 111 for meaning, described space D increases to D1, these elastic components 122 will be stretching shape, the pull bar 121a connecting these mass blockes 123, 121b pulls this Slave Block 116 and tooth bar 117 displacement (this Slave Block 116 is all close towards this slide block 115 with tooth bar 117), its displacement amount is assumed to P1, the spur wheel 1311 being linked in this tooth bar 117 is rotated, and make intermeshing first helical gear 1312, second helical gear 1321, and through the synchronous start of fluted disc 1322 that this second driving shaft 132 connects, and then speech, if when the rotating speed N2 of described centrifugal unit 12 is less than described initial speed N0, these mass blockes 123 as shown in Figure 7 as weaken because of centrifugal force, will relatively close to this first transmission shaft 111, described space D is reduced to D2, these elastic components 122 present compression shape, known these pull bars 121a, 121b can promote this Slave Block 116 and tooth bar 117 (this Slave Block 116 and tooth bar 117 are all towards the reverse movement of this slide block 115), its displacement amount is then assumed to P2, equally this spur wheel 1311 of drive is rotated, and make intermeshing first helical gear 1312, second helical gear 1321, and through the synchronous start of fluted disc 1322 that this second driving shaft 132 connects, reach when causing that to reverse the angle value of this fluted disc 1322 be θ, these blades 41 and the corresponding pivotable elevation angle β of teeth portion 411 thereof, blade 41 elevation angle can be automatically adjusted by mechanical type according to wind speed, have more simple and easy manipulation, promote advantage and effect of electricity generation efficiency.
Again, refer to Fig. 9 and Figure 10, show the present invention and the existing elevation angle and rotation speed relation schematic diagram respectively, with the relation schematic diagram of rotating speed of the present invention and wind speed, assuming that wind speed is Vwind, these blade 41 ends the produce moment of torsion elevation angle by wind speed is β, after wind speed Vwind is enhanced to threshold wind velocity gradually, as shown in Figure 9, if this blade pedestal 4 has rotating speed N3 be still positioned at normal interval, and along with wind speed Vwind strengthen continuously, the angle value θ that this fluted disc 1322 reverses can promote gradually, these blades 41 elevation angle β also increases thereupon, when wind speed Vwind causes rotating speed N3 excessive, then rotating speed N3 is positioned at as the 9th, in stall zone shown in 10 figure, these blades 41 elevation angle β will increase with wind speed Vwind, to slow down the lifting amplitude of rotating speed N3, allow the present invention can maintain rotating speed N3 in certain wind speed Vwind, obvious the present invention in stall zone in rely on blade 41 elevation angle β to control rotating speed N3 and unlikely stall, in comparison, existing fixed fan blade, because its blade elevation angle cannot adjust, therefore wind speed Vwind promotes, and rotating speed N3 also increases thereupon, thus causes fan stall, the present invention separately in wind speed Vwind more than a critical value
time, the elevation angle β of these blades 41 is corresponding wind speed Vwind and does not produce the angle of moment of torsion, meaning i.e. these blades 41 are parallel with wind speed Vwind direction, make wind speed Vwind cannot produce moment of torsion and this blade pedestal 4 of turn to blade 41, the facts of the fracture to prevent these blade 41 rotating speeds too fast occurs.
At this, the present inventor more considers this centrifugal governor mechanism 1 and has the misgivings excessively rotated, please coordinate shown in Figure 11, this housing 11 outside is more provided with a mechanical type braking device 5, it includes the brake block 52 of a brake component 51 and this brake component 51 of connection, this brake block 52 is made to be butted on this housing 11 outside, and by this this brake block 52 of actuator 51 management and control to whether pulling, hereby must maintain constant speed with electric drive reducing gear with background technique rotate or force the mode that stops, entirety in comparison, the present invention relies on the setting of this mechanical type braking device 5 really, it is outside that its brake block 52 is directly butted on this housing 11, the diameter of this housing 11 is large and area of contact is large, can frictional force be increased and be easy to brake, can prevent this centrifugal governor mechanism 1 from rotating too fast, namely good brake effect is reached.
Continuing refers to shown in Figure 12 to Figure 16, its second embodiment of the present invention, the difference of itself and the first embodiment is, the shape of the blade 41 of the first embodiment, need corresponding centrifugal governor mechanism 1 and according to this blade 41 in threshold wind velocity angle, to promote gradually with wind speed and be easy to produce the angle of moment of torsion in each angle of swing, and the excessive angle making moment of torsion reduce of wind speed designs; Second embodiment then can adopt existing blade 41 ', therefore the second embodiment is more provided with a draw-in groove 119 in this housing 11, is provided with a Flexible element 6 in this draw-in groove 119, and this Flexible element 6 connects a control pin 61; And this Slave Block 116 is provided with the corresponding groove 1161 controlling pin 61.
Rely on, as shown in figure 14, in blade 41 ' by the moment of torsion of wind speed Vwind and then drive blade pedestal 4, when housing 11 and the first transmission shaft 111, if blade pedestal 4, housing 11 and the first transmission shaft 111 rotating speed are still positioned at normal interval, the centrifugal force that control pin 61 in housing 11 rotates by housing 11 is still not enough to the elastic force overcoming this Flexible element 6, therefore control pin 61 still by the elasticity effect of Flexible element 6 insert group in the groove 1161 of Slave Block 116, Slave Block 116 and housing 11 are formed set firmly, therefore the centrifugal force that centrifugal unit 12 produces also cannot make pull bar 121b pull Slave Block 116, therefore centrifugal governor mechanism 1 cannot make the elevation angle of rotor blade 41 ' by bevel gear set 13.
And as shown in figure 15, when wind speed Vwind reaches critical value, meaning namely, when wind speed makes blade 41 ' moment of torsion forward (FWD) and drives housing 11 to rotate, the centrifugal force of this control pin 61 is greater than the elastic force of Flexible element 6, make Flexible element 6 elastic compression and cause the groove 1161 controlling pin 61 and depart from Slave Block 116, now, namely as in the first embodiment and shown in Figure 16, mass block 123 namely because of centrifugal force moment away from this first transmission shaft 111, therefore Slave Block 116 will be pulled by pull bar 121b, and then pull tooth bar 117, this tooth bar 117 is made to drive spur wheel 1311 to rotate, namely spur wheel 1311 drives the first helical gear 1312 dynamic with rotating by rotating shaft 131, because the second helical gear 1321 and the first helical gear 1312 engage each other, therefore the second helical gear 1321 will rotate by the first helical gear 1312 rotates, and then be transmitted in second driving shaft 132 and make fluted disc 1322 rotate, and rely on the teeth portion 411 of fluted disc 1322 with moving vane 41 ' to be rotated, and then adjust the elevation angle of blade 41 ' instantaneously, make the elevation angle of blade 41 ' be corresponding wind speed Vwind and do not produce the angle of moment of torsion, meaning i.e. these blades 41 ' are parallel with wind speed Vwind direction, make wind speed Vwind cannot produce moment of torsion and this blade pedestal 4 of turn to blade 41 ', to reach the object causing rapid reduction moment of torsion and rotating speed, by means of being applicable in the design of general blade 41 ', to possess the advantage that prophyll sheet 41 ' designs, and prophyll sheet 41 ' need not be redesigned, remaining embodiment of the present embodiment and effect and the first embodiment are similar to, therefore do not repeat them here.
More than illustrate just illustrative for the purpose of the present invention; and nonrestrictive, those of ordinary skill in the art understand, when not departing from the spirit and scope that claim limits; many amendments, change or equivalence can be made, but all will fall within protection scope of the present invention.
Claims (10)
1. the self-adjusting centrifugal governor mechanism in the blade of wind-driven generator elevation angle, it is characterized in that: this centrifugal governor mechanism comprises: a housing, its interlock wears one first transmission shaft, this first transmission shaft is equipped with a slide block and a Slave Block, this slide block is provided with at least one centrifugal unit, and described centrifugal unit is respectively equipped with two pull bars, and wherein a pull bar is fixedly arranged on this housing, another pull bar is connected to this Slave Block, and this Slave Block is provided with a tooth bar; And a bevel gear set, it is provided with one to correspond to the first transmission shaft second driving shaft perpendicular to the rotating shaft and of this tooth bar; This rotating shaft is provided with spur wheel and one first helical gear of this tooth bar of engagement; This second driving shaft is provided with corresponding this first helical gear second helical gear of engagement.
2. the self-adjusting centrifugal governor mechanism in the blade of wind-driven generator elevation angle according to claim 1, it is characterized in that, described centrifugal unit also comprises an elastic component and a mass block, this elastic component is located on this slide block, described mass block is located at described elastic component end, and described mass block is connected to described pull bar.
3. the self-adjusting centrifugal governor mechanism in the blade of wind-driven generator elevation angle according to claim 2, is characterized in that, this slide block is provided with two centrifugal units.
4. the self-adjusting centrifugal governor mechanism in the blade of wind-driven generator elevation angle according to claim 1, is characterized in that, this housing is also provided with the guide groove of a corresponding tooth bar, and this tooth bar end moves in this guide groove.
5. the self-adjusting centrifugal governor mechanism in the blade of wind-driven generator elevation angle according to claim 1, it is characterized in that, this housing is also provided with a pin joint seat, and this first transmission shaft is hubbed at this pin joint seat in one end of this Slave Block.
6. the self-adjusting centrifugal governor mechanism in the blade of wind-driven generator elevation angle according to claim 1, it is characterized in that, this housing is also provided with a flange, and a described wherein pull bar is fixedly arranged on the flange of this housing.
7. the self-adjusting centrifugal governor mechanism in the blade of wind-driven generator elevation angle according to claim 1, it is characterized in that, this housing is also provided with a draw-in groove, is provided with a Flexible element in this draw-in groove, and this Flexible element connects one and controls pin; And this Slave Block is provided with the corresponding groove controlling pin.
8. the self-adjusting centrifugal governor mechanism in the blade of wind-driven generator elevation angle according to any one of claim 1 to 7, is characterized in that, this outside is also provided with a mechanical type braking device, and this mechanical type braking device controls whether support this housing.
9. the self-adjusting centrifugal governor mechanism in the blade of wind-driven generator elevation angle according to any one of claim 1 to 7, it is characterized in that, also comprise a blade pedestal, it connects and is linked in this housing, this second driving shaft is arranged in this blade pedestal, and this second driving shaft is provided with a fluted disc in this blade pedestal inside; This blade pedestal is equipped with plural blade, and described blade is respectively equipped with the teeth portion of corresponding fluted disc in the inner one end of blade pedestal.
10. the self-adjusting centrifugal governor mechanism in the blade of wind-driven generator elevation angle according to claim 9, is characterized in that, this first transmission shaft connects an electricity generating device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410208902.4A CN105089932A (en) | 2014-05-16 | 2014-05-16 | Centrifugal speed regulating mechanism for automatically regulating elevation angles of wind-driven generator blades |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410208902.4A CN105089932A (en) | 2014-05-16 | 2014-05-16 | Centrifugal speed regulating mechanism for automatically regulating elevation angles of wind-driven generator blades |
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| Publication Number | Publication Date |
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| CN105089932A true CN105089932A (en) | 2015-11-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410208902.4A Pending CN105089932A (en) | 2014-05-16 | 2014-05-16 | Centrifugal speed regulating mechanism for automatically regulating elevation angles of wind-driven generator blades |
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| CN (1) | CN105089932A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111594380A (en) * | 2020-04-03 | 2020-08-28 | 贵州电网有限责任公司 | Small-size aerogenerator aircraft nose of variable oar |
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| US4029434A (en) * | 1975-05-22 | 1977-06-14 | Kenney Clarence E | Variable pitch mounting for airfoil blades of a windmill or propeller |
| DE2739297A1 (en) * | 1976-08-31 | 1978-03-02 | Stichting Energie | Rotary wind powered engine - has automatically varying blade pitch angle and additional pivot for blade tilt |
| EP0021810A1 (en) * | 1979-06-21 | 1981-01-07 | Control Technology Limited | Feathering windmill |
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