Summary of the invention
The present invention aims to provide and a kind ofly can utilize wind energy to greatest extent and stable vertical axis aerogenerator.
For solving the problems of the technologies described above, the invention provides following technological scheme: a kind of vertical axis aerogenerator, the rotating shaft comprising base, generator and be located in base, rotating shaft is connected with generator, rotating shaft is provided with in base, rotating shaft is connected with base rotation, and rotating shaft is provided with fixed tray and several equally distributed vane group; Described vane group comprises the strut of blade and cross setting, strut end and vane hinge, the outer end of articulating point deflection blade, rotating shaft is provided with synergy damping device, the outer end of synergy damping device deflection blade is arranged, blade around strut do near or away from the motion of synergy damping device; Described fixed tray is provided with oil hydraulic pump, and base is provided with internal gear, the gears meshing of internal gear and oil hydraulic pump; The oil outlet of oil hydraulic pump is connected with successively the actuator of pressure regulation device and the setting of routing motion parts, actuator is arranged towards blade outer end, and actuator can apply active force to blade; Pressure regulation device comprises regulating valve housing, regulating valve housing runs through and is provided with the movable return opening regulating device be located in regulating valve housing of regulating valve oil outlet, regulating valve filler opening, return opening and cooperation return opening; Regulating valve oil outlet is communicated with actuator; The oil outlet of regulating valve filler opening connecting fluid press pump; Return opening is communicated with the fuel tank of oil hydraulic pump; Return opening regulating device according to enter regulating valve housing hydraulic oil oil pressure size determine whether close return opening.
Described buffering enhancing device comprises the link press span be connected with strut and the dowel bar be arranged in link press span, and dowel bar is parallel with strut, and the outer end of dowel bar deflection blade is arranged.
Dowel bar one end is provided with damping device; The other end is provided with damping device, and described damping device comprises the connecting rod that damping spring and diameter are less than dowel bar, and damping spring and link press span are connected, and damping spring is fastened between dowel bar and link press span simultaneously, and connecting rod is sheathed in damping spring; Be provided with the middle part link press span be connected with strut in the middle part of dowel bar, dowel bar is arranged on the link press span of middle part.
Connecting rod is arranged on link press span, and the free end of connecting rod stretches out link press span, and the free end of connecting rod is bolted with stop nut, and stop nut is fastened on link press span outside.
Described return opening regulating device comprises the adjustment spring be connected with regulating valve housing, and the front end of adjustment spring coordinates return opening to be provided with spheroid, and spheroid compresses adjustment spring under the effect of hydraulic oil, and adjustment spring end is provided with oil pressure control unit.
Described oil pressure control unit comprises adjusting screw and adjusting nut, and adjusting screw one end is connected with adjustment spring; The other end is arranged in regulating valve outside, and regulating valve hull outside wall is sticked the adjusting nut be arranged on adjusting screw.
Actuator comprises cylinder body, cylinder body front end is provided with the cylinder body filler opening be connected with regulating valve oil outlet, cylinder interior is slided and is provided with the piston fitted tightly with inboard wall of cylinder block, return spring piston being fixed with push rod and being connected with cylinder body end, push rod free end is located at outside cylinder body, push rod is parallel to strut, and the outer end of push rod deflection blade is arranged simultaneously.
Described strut comprises spaced upper support bar and lower support bar, and upper support bar is fixedly connected with rotating shaft with lower fixed disk respectively by spaced upper fixed tray with lower support bar.
Upper support bar is connected by coupling shaft with lower support bar end, and coupling shaft is provided with at least two bearings, and blade is hinged by bearing and coupling shaft.
Described dowel bar comprises spaced upper dowel bar and lower dowel bar, and upper dowel bar and lower dowel bar are symmetrical relative to the cross central line of blade; Upper dowel bar and upper support bar are connected, and upper dowel bar is positioned at above upper support bar; Lower dowel bar and lower support bar are connected, and lower dowel bar is located at below lower support bar.
By above technological scheme, beneficial effect of the present invention is: 1, the internal gear of engagement and the gear of oil hydraulic pump, moves one quiet, is taken out by rotating mechanical energy, apply active force, make the rotation of rotating shaft safer to blade one; 2, actuator can apply active force to blade, and when the rotational velocity of rotating shaft exceedes rated speed, actuator's action, changes the angle between blade and wind direction, reduces rotating shaft stressed, ensures the stable of rotating speed; 3, pressure regulation device can adjust closing the oil pressure of return opening, makes it match with the oil pressure of the hydraulic oil of pushing executing mechanism action, the Applicable scope of raising device; 4, blade percussion can be converted on the one hand the positive moment of axis of rotation by the installation of dowel bar to the reverse impact power of dowel bar; On the other hand, ensure that vertical with wind direction with the wind time of blade, not only enhance wind energy utilization efficiency but also slow down the impact of reverse impact power on device; 5, damping device can avoid blade to suffer damage when impacting dowel bar, extends the life-span of blade; The arranging of damping device can make when reverse impact power is transferred to rotating shaft more level and smooth; If do not have damping device, the rotation speed change of rotating shaft is larger, the spread of voltage that wind-driven generator generates, post-processed more complicated; 6, stop nut can avoid dowel bar to move out from link press span; 7, blade is hinged in rotating shaft by coupling shaft, and concentricity is high, and blade rotation freely, can with the wind time, vertical with wind direction; Parallel with wind direction time against the wind, thus maximally utilise wind energy.
Embodiment
A kind of vertical axis aerogenerator, as depicted in figs. 1 and 2, comprise base 1, generator and rotating shaft 2, be provided with two rotary bearings 4 in base 1, rotating shaft 2 is connected with generator, and rotating shaft 2 is rotated by rotary bearing 4 and is located in base 1.Rotating shaft 2 is provided with fixed tray 3 and several equally distributed vane group; Described vane group comprises the strut of blade 15 and cross setting, strut and blade 15 hinged, blade 15 is partial to the outer end of blade 15 with the position of the articulating point of strut.The rotary bearing 4 arranged reduces frictional force when rotating shaft 2 is rotated relative to base 1, thus reduces energy ezpenditure.
Generator does not show in the drawings, is the common equipment of power field.
Under the action of the forces of the wind, drive rotating shaft 2 to rotate, the axle of rotating shaft 2 drive electrical generators rotates blade 15, thus is electric energy by the rotation of blade and rotating shaft by wind energy transformation.
The inner of blade 15 and the define method of outer end are: in the present embodiment, and along the sense of rotation of rotating shaft 2, two ends of blade 15 are respectively inner and outer end.
The structure composition of each vane group is identical, include the strut of blade 15 and two cross settings, two strut intervals arrange and are respectively upper support bar 122 and lower support bar 121, and upper support bar 122 is fixedly connected with rotating shaft 2 by the upper fixed tray 112 be fixedly arranged in rotating shaft 2; Lower support bar 121 is fixedly connected with rotating shaft 2 by the lower fixed disk 111 be fixedly arranged in rotating shaft 2.Upper support bar 122 is connected by coupling shaft 13 with the end of lower support bar 121.Coupling shaft 13 is provided with bearing 14, and blade 15 is hinged by bearing 14 and coupling shaft 13; Hinged relative to strut of blade 15 is achieved by bearing 14.
Upper support bar 122 and lower support bar 121 two struts mounting bracket as blade 15 is set, the stable of the installation of blade 15 can be ensured, realize the stable operation of blade 15.
In order to realize spacing in rotary course of blade 15, reduce the impact of the impact force that blade 15 is subject in rotary course simultaneously, rotating shaft 2 is provided with buffering enhancing device, buffering enhancing device is parallel to strut and arranges, the outer end of simultaneous buffering enhancing device deflection blade 15, blade 15 around strut do away from or near the motion of synergy damping device; When blade 15 with the wind time, blade 15 near synergy damping device, and is finally fitted on synergy damping device; When blade 15 against the wind time, blade 15 is away from synergy damping device, and final parallel with strut.
Buffering enhancing device achieve blade 15 relative to coupling shaft 13 rotate spacing; Meanwhile, by buffering enhancing device, the reverse impact power that blade 15 is subject to when impacting buffering enhancing device can be transferred in rotating shaft 2, thus by the opposing torque that blade 15 is subject to, be converted into the forward torque of rotating shaft 2.
In order to make blade 15 receive forward wind to greatest extent, avoid the impact of counter blow with prestissimo simultaneously, the outer end that blade 15 and the articulating point of coupling shaft 13 are partial to blade 15 is arranged.When blade 15 with the wind time, rotating shaft 2 is rotated, and blade 15 is in the state vertical with wind direction under the effect of buffering enhancing device, thus makes blade 15 receive wind-force to greatest extent; When blade 15 contrary wind, under wind-force effect, blade 15 rotates to the state parallel with strut, thus parallel with wind direction, because of the outer end of articulating point deflection blade 15, and blade rotary speed, thus the impact reducing the rotational speed of wind-force countershaft 2.
In order to make the rotation of blade 15 more stable, the quantity of bearing 14 is at least two, and two bearings are symmetrical relative to the cross central line of blade 15.
Cushion enhancing device as shown in Figure 3 and comprise two dowel bars, dowel bar is parallel to strut and arranges, simultaneously the outer end of dowel bar deflection blade 15.Two dowel bars are respectively dowel bar 162 and lower dowel bar 161, and upper dowel bar 162 and lower dowel bar 161 are symmetrical relative to the cross central line of blade 15; Upper dowel bar 162 to be positioned at above upper support bar 122 and to be connected with upper support bar 122; Lower dowel bar 161 to be positioned at below lower support bar 121 and to be connected with lower support bar 121.
By arranging dowel bar 162 and lower dowel bar 161 two dowel bars in the process implemented, the impact force that rotating shaft 2 and blade 15 can be made to be subject to is even, ensures the stable of operation.
Upper dowel bar is positioned at the top of upper support bar; Lower dowel bar is positioned at the below of lower support bar, and when blade 15 collides upper dowel bar and lower dowel bar, blade 15 longitudinal stress is even, and the impact force be subject to is larger; The reverse impact power be transferred in rotating shaft by dowel bar is also larger.
Upper dowel bar 162 is identical with the Placement of lower support bar 121 with lower dowel bar 161 with the Placement of upper support bar 122, below the Placement of above dowel bar 162 and upper support bar 122 be that example is described.
Upper dowel bar 162 is interval with link press span 163 and middle part link press span 164, upper dowel bar 162 is arranged on the link press span 164 of middle part; Upper dowel bar 162 one end is provided with damping device 165, and damping device 165 coordinates blade 15 to arrange; Upper dowel bar 165 the other end is provided with damping device.Damping device 165 is rubber layer, and in the concrete process implemented, damping device also can be other the structure that can play buffering.
The damping device arranged can play the effect of buffering when blade 15 impacts dowel bar, avoid damaging blade 15.
The connecting rod 168 that damping device comprises damping spring 167 and is connected with upper power transmission boom end, the diameter of connecting rod 168 is less than the diameter of dowel bar, and upper dowel bar is fastened on the outside of link press span 163.Damping spring 167 is fastened between dowel bar 162 and link press span 163; Connecting rod 168 is sheathed in damping spring 167, and damping spring 167 is connected with the alien invasion of link press span 163, and bolt can be adopted herein to be fixed on link press span 163 by damping spring 167.Connecting rod 168 is arranged in link press span 163, and connecting rod 168, under the effect of horizontal force, does and compresses or the motion of stretching damping spring 167, thus realizes the transverse shifting of upper dowel bar relative to link press span.
In order to avoid upper dowel bar 162 is out traversing from link press span 163, the free end of connecting rod 168 is provided with stop nut 166, it is outside that stop nut 166 is fastened on link press span 163; When upper dowel bar is relative to link press span 163 transverse shifting, under the effect of stop nut, limit the stretching to damping spring 167, thus upper dowel bar 162 is limited on link press span 163.
Arranging of damping device can avoid blade 15 to suffer damage when striking dowel bar, extends the life-span of blade 15; Arranging of damping device can be softer when reverse impact power is transferred to rotating shaft.If do not have damping device, in the process of rotating, change can be relatively more unexpected in rotating shaft, when wind-power electricity generation, and the spread of voltage of generation, post-processed more complicated; After adding damping device, rotating shaft is relatively milder in the change of rotation process medium speed, and the voltage stabilization of generation, post-processed is simple.
When in use, blade 15 is stressed, and rotating shaft 2 rotates relative to base; When blade 15 be in the wind state time, under the action of the forces of the wind, blade 15 rotates around coupling shaft 13, under the effect of dowel bar, spacing in the position vertical with wind direction, thus receive wind action power to greatest extent, can opposing torque be subject to time blade 15 impacts dowel bar simultaneously, this opposing torque is transferred in rotating shaft by dowel bar by blade 15, is converted into the positive moment of rotating shaft 2; When wind direction is contrary with the sense of rotation of rotating shaft 2, when blade 15 is in contrary wind state, under the action of the forces of the wind, blade 15 rotates around coupling shaft 13, finally stops at the position parallel with wind direction, avoids wind-force countershaft 2 to play reaction force; Thus realize the maximum utilization of wind energy, avoid energy ezpenditure, realize the operation of rotating shaft 2 continous-stable.
Fixed tray 3 is provided with oil hydraulic pump 7; The gear 6 of fluid,matching press pump 7, base 1 is provided with internal gear 5.The oil outlet of oil hydraulic pump 7 is connected with pressure regulation device 9 and actuator 10 in turn by oil pipe 8.Actuator 10 is located on the lower fixed disk 111 that is connected with rotating shaft 2, and actuator 10 is arranged towards blade 15, and actuator 10 can produce active force to blade 15.
When in use, internal gear 5 is static, rotating shaft 2 drives the gear 6 of oil hydraulic pump 7 to rotate, power taking between both are dynamic one quiet one, and the rotating mechanical energy of taking-up is converted into the oil pressure of the hydraulic oil on the oil outlet of oil hydraulic pump 7, when this pressure reaches the force value of pressure regulation device 9 setting, actuator 10 is driven to control the motion of vane group Leaf 15.
Pressure regulation device 9 as shown in Figure 4, comprises regulating valve housing 97, and regulating valve housing 97 inside is provided with cavity 98, and regulating valve housing 97 sidewall is provided with the regulating valve filler opening 91, regulating valve oil outlet 92 and the return opening 93 that run through with cavity 98; The fuel tank of regulating valve filler opening 91 and the equal connecting fluid press pump 7 of return opening 93, the wherein oil outlet of the fuel tank of regulating valve filler opening 91 connecting fluid press pump 7; The return opening of the fuel tank of return opening 93 connecting fluid press pump 7.Regulating valve oil outlet 92 connects actuator 10.In cavity 98, coordinate return opening 93 to be provided with return opening regulating device, return opening regulating device can determine whether cut out return opening 93 according to the size of the oil pressure of the hydraulic oil entered in regulating valve housing 97.
Return opening regulating device comprises adjustment spring 95 and spheroid 94, and adjustment spring 95 front end and spheroid 94 are connected; Adjustment spring 95 end and regulating valve housing 97 are connected; Return opening 93 is positioned at the sidepiece of adjustment spring 95 end.Adjust on spring 95 simultaneously and be connected with oil pressure control unit, the oil pressure size of the hydraulic oil of being closed by return opening 93 can be adjusted by oil pressure control unit.
Oil pressure control unit comprises adjusting screw 961 and adjusting nut 962, and adjusting screw 961 one end is connected with adjustment spring 95; It is outside that the other end is arranged in regulating valve housing 97, and adjusting nut 962 is attached on regulating valve housing 97 outer side wall, and is bolted on adjusting screw 961; When in use, rotate adjusting nut 962, adjusting screw 961 drives adjustment spring 95 and spheroid 94 to do away from return opening 93 or the motion close to return opening 93.When spheroid 94 is away from return opening 93, the hydraulic oil being entered regulating valve housing 97 by regulating valve filler opening 91 needs larger pressure return opening 93 could be closed, and vice versa; By this adjustment mode being simple and easy to realize, realize the adjustment of the oil pressure size of the hydraulic oil of closing return opening 93.
Herein, the adjustment of oil pressure control unit needs to be determined by experiment, and ensures that the oil pressure of the hydraulic oil overcoming adjustment spring 95 rate of tension just can make actuator's action by pushing executing mechanism.
Hydraulic oil enters cavity 98 by regulating valve filler opening 91, and under the effect of oil pressure, adjustment spring 95 compresses, and hydraulic oil out enters actuator 10 by regulating valve oil outlet 92 from cavity 98.
If the oil pressure of hydraulic oil is smaller, then hydraulic oil cannot overcome adjustment spring 95 tension force close return opening 93 by under the effect of spheroid 94.Now, the hydraulic oil entering actuator 10 returns in cavity 98 again, in the fuel tank by return opening 93 rework solution press pump 7.
If the oil pressure of hydraulic oil is enough large, then hydraulic oil can overcome the tension force of adjustment spring 95, under the effect of spheroid 94, closes return opening 93.Enter the hydraulic oil of actuator 10 under the effect of oil pressure, the motion of pushing executing mechanism 10 pairs of moving elements controls.
The pressure regulation device arranged can adjust the oil pressure of the hydraulic oil entering actuator, makes it identical with the oil pressure of the hydraulic oil of pushing executing mechanism, thus can adjust oil pressure according to rated speed, improves Applicable scope.
, by oil hydraulic pump 7, rotating mechanical energy is converted into the operation power of actuator herein, novel in design; Adjust oil pressure by pressure regulation device simultaneously, ensure only when rotating shaft 2 rotational speed is too fast, just can take out this part rotating mechanical energy, active force is applied to blade, is realized the stable operation of rotating shaft 2 by these measures.
Actuator as shown in Figure 5, comprises cylinder body 101, and cylinder body 101 front end is provided with cylinder body filler opening 102, and cylinder body filler opening 102 is connected with regulating valve oil outlet 92, and hydraulic oil is entered in cylinder body 101 by regulating valve oil outlet 92 and cylinder body filler opening 102.Piston 103 is provided with at cylinder body 101 internal slide, piston 103 fits tightly with the inwall of cylinder body 101, the outside of piston 103 is fixed with push rod 104 and return spring 105, the free end of push rod 104 stretches out cylinder body 101, push rod 104 is parallel to strut, and push rod 104 is partial to the outer end setting of blade 15 simultaneously; When blade be in the wind state time, the wind-force that blade 15 receives is maximum, because rotating shaft rotating speed is too fast, then need the wind-force that minimizing blade 15 receives, now push rod 104 is under the effect of hydraulic oil, and the part of stretching out cylinder body 101 increases, fit in the end of final push rod 104 and the outer end of blade 15, by blade 15 jack-up, make there is certain angle between blade 15 and wind direction, reduce the wind-force that blade 15 receives.
When the rotating speed of rotating shaft 2 exceedes rated speed, enter the hydraulic oil of cylinder body 101, under the effect of oil pressure, overcome the tension force of return spring 105, promote piston 103, finally make push rod 104 stretch out cylinder body 101, and act on blade 15.
Return spring 105 be arranged so that hydraulic oil promote piston 103 process in be subject to resistance; Prevent hydraulic oil enter cylinder body 101 namely can promote piston 103 situation occur, ensure only when the oil pressure of hydraulic oil reaches certain value, push rod action could be promoted.
When blade 15 rotates relative to rotating shaft 2, ensure time with the wind that blade 15 is vertical with wind direction, time against the wind, blade 15 is parallel with wind direction, thus realizes the maximum using of wind energy; When wind-force constantly increases, when the rotational velocity of rotating shaft 2 exceedes rated speed, overcome the tension force of adjustment spring 95 from oil hydraulic pump 7 hydraulic oil out, the oil pressure of hydraulic oil acts on spheroid, makes spheroid 94 promote adjustment spring 95, final plant closure return opening 93; Hydraulic oil enters cylinder body 101, the tension force of return spring 105 is overcome under the effect of oil pressure, piston 103 is made to promote push rod 104, push rod 104 acts on the outer end of the blade 15 vertical with wind direction, by the outer end jack-up of blade 15, there is certain angle when making blade 15 with the wind and between wind, thus reduce the wind-force received, and then reduce rotating shaft rotating speed; Blade 15 with the wind time and wind between the size of angle change along with the oil pressure size of hydraulic oil, oil pressure is larger, and rotating shaft 2 rotating speed is faster, and it is more that push rod is pushed out, and angle is larger.
The present invention is novel in design, just can start when wind speed is lower, rotate, stable, reduce various impact stresss the relatively rotating by rotating shaft and base of blade at running of wind-driven generator, gear and internal gear is utilized the rotating mechanical energy in both relative rotary courses to be converted into the kinetic energy of actuator, and this kinetic energy is put on blade, making when not using other mechanical energy the rotation of rotating shaft more stable, improve the safety in operation of vertical axis aerogenerator.