CN203962304U - A kind of wind power generating set - Google Patents
A kind of wind power generating set Download PDFInfo
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- CN203962304U CN203962304U CN201420268518.9U CN201420268518U CN203962304U CN 203962304 U CN203962304 U CN 203962304U CN 201420268518 U CN201420268518 U CN 201420268518U CN 203962304 U CN203962304 U CN 203962304U
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- power generating
- wind power
- generating set
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Abstract
The utility model relates to a kind of wind power generating set, comprise impeller (1), main shaft (2), gear-box (3), coupling (4), generator (6) and for the mainframe as supporting element (7), impeller (1) drives main shaft (2) rotation, gear-box (3) is arranged on the Transmitted chains of main shaft (2) and by coupling (4) and is connected with generator (6), wind power generating set also comprises control gear (50) and rotary speed measurer (9), the ring gear of gear-box (3) middle gear driving mechanism is connected by sub-transmission device with control gear (50), when the rotating speed that main shaft (2) detected when rotary speed measurer (9) changes, control gear (50) is changed rotating speed and/or turns to according to the variation of sun gear rotating speed in gear drive by the ring gear of sub-transmission device control gear driving mechanism, the adjusting of realization to gear drive velocity ratio, expanded the suitable application region of blower fan, saved unit holistic cost.
Description
Technical field
The utility model relates to a kind of novel wind power generating set, relates in particular to a kind of wind power generating set that can reduce incision wind speed, improve cut-out wind speed, belongs to technical field of wind power generation.
Background technique
That existing main flow wind power generating set is divided into is double-fed, direct-driving type and full power type.
Double-fed type has a common deficiency, cut exactly wind speed still higher, when lower than this incision wind speed threshold value, when even if wind is enough to impeller rotation to the opplied moment of impeller, also to limit its rotation, if because the rotor actual speed of double-fed blower fan, than little too many of rated speed, can be damaged the frequency variator (being sometimes also inverter) of double-fed wind power generator so.In like manner, also only have wind speed to be no more than the upper limit of this pair of wind speed requirement of cut-out wind speed, only have and do not exceed while making maximum speed that frequency variator (being sometimes also inverter) can bear when generator amature rotational speed, generator set could normal power generation.So just cause that wind power generating set can only be operated in a very narrow wind speed interval, generated energy is low, dead time is long, wind energy utilization is low.And then cause blower fan utilization ratio low, limit the development of whole wind energy industry.The conventional working principle of wind power generating set and the layout of core component, as shown in Figure 1, when thereby wind makes vane stress impeller 1 when having the axis rotation at certain inclination angle with horizontal plane to blade, the rotation of impeller is by main shaft or be known as device 2 rotation of changeover portion, 2 also make speedup box be connected with gear-box 3, motion and power pass to coupling 4 by 3, and then pass to generator 6 by coupling, mainframe 7 is to be used for laying as supporting structure, fix other component, it also separates by bearing and 2, mainframe connects with tower cylinder 8 use bearings.Due to the uncertainty of wind load, it is all random causing the electric frequency that blower fan staor winding sends, and the frequency that electrical network requires is fixed.Double-fed blower fan adopts and on rotor, accesses the method that frequency variator is introduced electric current, allow rotor also produce rotating magnetic field, the frequency of this rotating magnetic field is regulated according to the size of wind speed at any time by frequency variator, makes this vector of two of the magnetic field of stator and the magnetic field of rotor meet the constant frequency value that electrical network requires.The core component of direct-driving type wind power generation unit is generally the gear-box 3 removing in Fig. 1, and the type of generator 6 is different from double-fed, the effect of frequency variator also with double-fed difference to some extent, remaining part is to be all more or less the same in principle.Wherein the frequency variator effect of double-fed blower fan and full power blower fan is similar, the electricity that is all whole power of saying that generator sends is input in frequency variator, it is transformed into direct current by Ac, and then requires again to change into from direct current the Ac that meets the requirement that is connected to the grid requirements such as () voltage, frequency, phase places according to electrical network.
Different with the working principle of frequency variator in full power type in double-fed, but be all in order to make the larger electricity of frequency fluctuation scope that generator sends change into the not quite electricity of (in electrical network permission range) of frequency fluctuation scope.Directly drive frequency variator and full power frequency variator working principle is similar.The wind power generating set that also has a kind of constant-speed and constant-frequency, it is to guarantee that by change at any time the change blade angle of blade according to the difference of wind speed generator amature rotating speed is substantially invariable.But this just caused blade can not be as double-fed, directly drive, farthest absorb and utilize wind energy full power type, cannot guarantee unit generation maximizes power.In addition, because electrical network has been incorporated to a lot of requirements to wind power generating set, except requiring blower fan to send electric voltage, frequency, phase place etc., all meet electrical network regulation, also require when electrical network falls due to self reason generation voltage, blower fan can continue to keep generating to raise line voltage within a certain period of time, when line voltage falls, if wind-powered electricity generation unit does not disconnect with electrical network immediately, likely damage the expensive equipment such as inverter.
Therefore,, for above deficiency, the utility model provides a kind of wind power generating set.
Model utility content
(1) technical problem that will solve
The purpose of this utility model is to provide a kind of wind power generating set, to solve the following problem existing in prior art:
Existing double-fed type wind power generating set incision wind speed is high, blower fan cannot start generating under low wind speed, when high wind speed, cross and early cut out the problem that cannot make full use of wind-resources causing;
The existing inverter power that directly drives type and full power type wind-driven generator is large, the problem of high cost;
Existing blower fan is when line voltage reduces suddenly, and the inverter being attached thereto holds flimsy problem, i.e. the problem of low voltage crossing.
(2) technological scheme
For this purpose, the utility model proposes a kind of wind power generating set, comprise impeller, main shaft, gear-box, coupling, generator and for the mainframe as supporting element, described impeller drives main shaft rotation, described gear-box is arranged on the Transmitted chains of described main shaft and is connected with generator by described coupling, described wind power generating set also comprises control gear and rotary speed measurer, the ring gear of the gear drive arranging in gear-box is connected by sub-transmission device with described control gear, when the rotating speed that described main shaft detected when described rotary speed measurer changes, described control gear is controlled described gear drive ring gear by described sub-transmission device changes rotating speed and/or turns to according to the variation of sun gear rotating speed in gear drive, the adjusting of realization to gear drive velocity ratio.
Wherein, in described gear drive, be provided with at least one-level planetary gear transmission mechanism.
Wherein, described planetary gear transmission mechanism comprises planetary gear speed-reduction drive mechanism and/or planetary pinion speedup drive mechanism.
Wherein, in described gear drive, have at least the ring gear of primary planet pinion drive mechanism by bearing, to be connected with gear box casing and motion under the sub-transmission device of answering is in contrast controlled.
Wherein, described control gear comprises driving mechanism and driving-controlling device, described driving-controlling device is connected with described driving mechanism, described driving mechanism is in transmission connection by the ring gear of described sub-transmission device and described gear drive, described driving-controlling device is controlled described driving mechanism according to the testing result of described rotary speed measurer and is driven described sub-transmission device, and described sub-transmission device drives the ring gear of described gear drive to rotate around axis.
Wherein, the Placement of the ring gear of described sub-transmission device and described gear drive is any in gear transmission, sprocket driving, gear pin tooth, toothed belt and belt wheel transmission.
Wherein, described driving mechanism is motor-driven mechanism.
Wherein, described driving mechanism is hydraulic drive mechanism.
Wherein, described driving mechanism is pneumatic drive mechanism.
Wherein, described rotary speed measurer is the rotating speed measuring sensor being arranged on described main shaft.
(3) beneficial effect
The wind power generating set the utility model proposes, has following beneficial effect:
1, the wind power generating set of relatively conventional type has been cancelled expensive generator inverter, has greatly saved unit holistic cost, and more easily meets the grid-connected requirement of grid company to blower fan low voltage crossing;
2, not only reduce incision wind speed, but also increased cut-out wind speed, make type lower to the requirement of wind speed, can more make full use of wind-resources, increasing electricity output and generating dutation, the wind energy turbine set of equipping this blower fan greatly reduces the requirement of wind-resources, has greatly expanded the suitable application region of blower fan;
3, improve the grid-connected effect of wind power generating set, avoid grid-connected or throw off with electrical network continually;
4, can make as required generator remain high rotating speed, while avoiding rotor speed when generator too low, because the efficiency of generator is low, cause excessive energy loss.
Accompanying drawing explanation
By reference to accompanying drawing, can more clearly understand feature and advantage of the present utility model, accompanying drawing is schematically to should not be construed as the utility model is carried out to any restriction, in the accompanying drawings:
Fig. 1 is the working principle of conventional wind power generating set and the layout plan of core component;
Fig. 2 is the working principle of a kind of wind power generating set of the utility model and the layout plan of core component;
Fig. 3 is the fundamental diagram of planetary gear transmission mechanism in the utility model embodiment;
Fig. 4 is the fundamental diagram of planetary gear transmission mechanism in another embodiment of the utility model.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technological scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is the utility model part embodiment, rather than whole embodiments.Embodiment based in the utility model, those of ordinary skills are not making the every other embodiment who obtains under creative work prerequisite, all belong to the scope of the utility model protection.
The utility model provides a kind of wind power generating set, with a kind of brand-new gear drive, replaces existing generator inverter.This kind of gear drive can guarantee that impeller just starts and makes unit generation under than the lower operating mode of existing product incision wind speed at wind speed, and can guarantee in speed range that the rotating speed of generator amature requires at electrical network.
The inverter that in a kind of wind power generating set that the utility model provides, stator and rotor are all answered without pairing, also without joining the Crossbar cabinet of protecting inverter, the layout of working principle and core component as shown in Figure 2, comprise: impeller 1, main shaft 2, gear-box 3, coupling 4, generator 6 and for the mainframe 7 as supporting element, described mainframe 7 can connect by bearing with tower cylinder 8, described impeller 1 drives main shaft 2 rotations, described gear-box 3 is arranged on the Transmitted chains of described main shaft 2 and by described coupling 4 and is connected with generator 6, described wind power generating set also comprises control gear 50 and rotary speed measurer 9, the ring gear of the gear drive arranging in gear-box 3 is connected by sub-transmission device with described control gear 50, when the rotating speed that described main shaft 2 detected when described rotary speed measurer 9 changes, described control gear 50 is controlled described gear drive ring gear by described sub-transmission device changes rotating speed and/or turns to according to the variation of sun gear rotating speed in gear drive, the adjusting of realization to gear drive velocity ratio.
A kind of wind power generating set that the utility model provides has been cancelled expensive generator inverter, although increased control gear and rotary speed measurer, but its cost is lower than the generator inverter cost of existing Same Efficieney grade blower fan, has greatly saved unit holistic cost.
The ring gear of the utility model middle gear driving mechanism changes rotating speed and/or turns to according to the variation of sun gear rotating speed in gear drive, the adjusting of realization to gear drive velocity ratio, and its rotating speed and/or turn to and can carry out real-time adjustment according to the testing result of rotary speed measurer 9, be different from the uniform rotation of existing differential gear transmission mechanism, it can guarantee still to guarantee under input shaft is the in very large range fluctuation situation of input speed of main shaft 2 that output shaft is that the output speed of coupling 4 is constant, be that the invariablenes turning speed of generator amature maintains near the frequency that electrical network requires.Thereby guarantee that unit generates electricity by way of merging two or more grid systems in wider wind speed range.
Wherein, in described gear drive, be provided with at least one-level planetary gear transmission mechanism.
Wherein, described planetary gear transmission mechanism comprises planetary gear speed-reduction drive mechanism and/or planetary pinion speedup drive mechanism.
Wherein, in described gear drive, have at least the ring gear of primary planet pinion drive mechanism by bearing, to be connected with gear box casing and motion under the sub-transmission device of answering is in contrast controlled.
The working principle of the gear drive proposing in the utility model embodiment, as shown in Figure 3, comprise input shaft 31, multi-stage planetary gear drive mechanism, output shaft 32 and sub-transmission device 33, described input shaft 31 is coaxially fixedly connected with main shaft 2, and input shaft 31 also can be wholely set with main shaft 2; Described output shaft 32 is coaxially fixedly connected with coupling 4, and output shaft 32 also can be wholely set with coupling 4.In Fig. 3, only show N level planetary gear transmission mechanism and by sub-transmission device 33, be connected with the situation of control gear, but the not restriction to the utility model other technologies scheme, in the gear drive the utility model proposes, have at least primary planet pinion drive mechanism to be equipped with corresponding with it sub-transmission device, every sub-transmission device is provided with it driven to the control gear of controlling, and also can only to selected sub-transmission device, control gear be set.The ring gear that the planet of multi-stage planetary gear drive mechanism subtracts (increasing) speed level can rotate around axis, and therefore the velocity ratio of whole Transmitted chains is adjustable.Impeller 1 rotating speed that variation causes according to wind speed and the rotation speed change of main shaft 2, therefore input speed is that the rotating speed of planet carrier changes, now can, by regulating the rotating speed and the invariablenes turning speed that turns to and then guarantee gearbox output shaft 32 of N level planetary gear transmission mechanism ring gear, be specially:
When wind speed keeps unit generation completely to send out and when wind speed is stable, keep that the ring gear of N level planetary gear transmission mechanism is static not to be rotated; When wind speed strengthens or reduces, the rotating speed of input shaft 31 increases or reduces, now the ring gear of N level planetary gear transmission mechanism need to input shaft 31 in the same way or rotate backward.Wind speed changes greatly, and ring gear rotational velocity is larger; Wind speed changes faster, and ring gear rotation acceleration is larger.Concrete parameter of rotating can be calculated according to kinology and dynamics.
Wherein, described control gear 50, as shown in Figure 3, comprise driving mechanism 501 and driving-controlling device 502, described driving-controlling device 502 is connected with described driving mechanism 501, described driving mechanism 501 is in transmission connection by the ring gear of described sub-transmission device and described gear drive, described driving-controlling device 502 is controlled described driving mechanism 501 according to the testing result of described rotary speed measurer 9 and is driven described sub-transmission device, described sub-transmission device drives the ring gear of described gear drive to rotate around axis, thereby realized the inverter of cancelling original generator, mechanically generator amature is carried out the object of rotating speed control.
The kind of drive of planetary gear transmission mechanism and described sub-transmission device 33 includes but not limited to gear engagement, the engagement of gear pin rail, sprocket driving, toothed belt transmission or belt wheel transmission, sub-transmission device 33 is driven by driving mechanism 501, and the driving-controlling device 502 that the turning to of driving mechanism 501, rotating speed, torque are joined by it is controlled.The control of 502 pairs of driving mechanisms 501 of driving-controlling device need to carry out work according to the feedback information of rotary speed measurer 9, thereby guarantee no matter impeller 1 drives the rotating speed of main shaft 2 fast or slow, the rotating speed of the output shaft of gear-box 3 remains within the scope of the generator speed that electrical network requires, both played the effect of inverter, and also made generator at lower wind speed or more under high wind speed, also can obtain stable generator amature rotating speed.
The Transmitted chains of controlling the driving mechanism of sub-transmission device 33 rotations in the utility model embodiment includes but not limited to gear transmission, sprocket driving, gear pin rail, toothed belt or belt wheel transmission.
Wherein, described driving mechanism 501 is motor-driven mechanism.
Wherein, described driving mechanism 501 is hydraulic drive mechanism.
Wherein, described driving mechanism 501 is pneumatic drive mechanism.
Wherein, described rotary speed measurer 9 is for being arranged on the rotating speed measuring sensor on described main shaft 2.
At the utility model embodiment medium speed measuring device 9, also can be arranged on the input shaft 31 of gear-box 3.
Fig. 4 is the fundamental diagram of planetary gear transmission mechanism in another embodiment of the utility model, the 2nd grade of planetary gear transmission mechanism has been shown in the utility model embodiment and has been equipped with N level planetary gear transmission mechanism the situation that is connected corresponding control gear by sub-transmission device.Above embodiment is only non-limiting in order to the technical solution of the utility model to be described, only with reference to preferred embodiment, the utility model is had been described in detail.
The wind power generating set the utility model proposes, the wind power generating set of relatively conventional type has been cancelled expensive generator inverter, has greatly saved unit holistic cost, and more easily meets the grid-connected requirement of grid company to blower fan low voltage crossing; Not only reduce incision wind speed, but also increased cut-out wind speed, make type lower to the requirement of wind speed, can more make full use of wind-resources, increasing electricity output and generating dutation, the wind energy turbine set of equipping this blower fan greatly reduces the requirement of wind-resources, has greatly expanded the suitable application region of blower fan; Improve the grid-connected effect of wind power generating set, avoid grid-connected or throw off with electrical network continually; Can make as required generator remain high rotating speed, while avoiding rotor speed when generator too low, because the efficiency of generator is low, cause excessive energy loss.
Although described by reference to the accompanying drawings mode of execution of the present utility model, but those skilled in the art can make various modifications and variations in the situation that not departing from spirit and scope of the present utility model, and such modification and modification all fall into by within claims limited range.
Claims (10)
1. a wind power generating set, comprise impeller (1), main shaft (2), gear-box (3), coupling (4), generator (6) and for the mainframe as supporting element (7), described impeller (1) drives main shaft (2) rotation, described gear-box (3) is arranged on the Transmitted chains of described main shaft (2) and by described coupling (4) and is connected with generator (6), it is characterized in that: described wind power generating set also comprises control gear (50) and rotary speed measurer (9), the ring gear of the gear drive arranging in gear-box (3) is connected by sub-transmission device with described control gear (50), when the rotating speed that described main shaft (2) detected when described rotary speed measurer (9) changes, described control gear (50) is controlled described gear drive ring gear by described sub-transmission device changes rotating speed and/or turns to according to the variation of sun gear rotating speed in gear drive, the adjusting of realization to gear drive velocity ratio.
2. wind power generating set according to claim 1, is characterized in that, is provided with at least one-level planetary gear transmission mechanism in described gear drive.
3. wind power generating set according to claim 2, is characterized in that, described planetary gear transmission mechanism comprises planetary gear speed-reduction drive mechanism and/or planetary pinion speedup drive mechanism.
4. wind power generating set according to claim 2, is characterized in that, has at least the ring gear of primary planet pinion drive mechanism by bearing, to be connected with gear box casing and motion under the sub-transmission device of answering is in contrast controlled in described gear drive.
5. wind power generating set according to claim 1, it is characterized in that, described control gear (50) comprises driving mechanism (501) and driving-controlling device (502), described driving-controlling device (502) is connected with described driving mechanism (501), described driving mechanism (501) is in transmission connection by the ring gear of described sub-transmission device and described gear drive, described driving-controlling device (502) is controlled described driving mechanism (501) according to the testing result of described rotary speed measurer (9) and is driven described sub-transmission device, described sub-transmission device drives the ring gear of described gear drive to rotate around axis.
6. wind power generating set according to claim 5, is characterized in that, the Placement of the ring gear of described sub-transmission device and described gear drive is any in gear transmission, sprocket driving, gear pin tooth, toothed belt and belt wheel transmission.
7. according to the wind power generating set described in claim 5 or 6, it is characterized in that, described driving mechanism (501) is motor-driven mechanism.
8. according to the wind power generating set described in claim 5 or 6, it is characterized in that, described driving mechanism (501) is hydraulic drive mechanism.
9. according to the wind power generating set described in claim 5 or 6, it is characterized in that, described driving mechanism (501) is pneumatic drive mechanism.
10. wind power generating set according to claim 1, is characterized in that, described rotary speed measurer (9) is for being arranged on the rotating speed measuring sensor on described main shaft (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420268518.9U CN203962304U (en) | 2014-05-23 | 2014-05-23 | A kind of wind power generating set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420268518.9U CN203962304U (en) | 2014-05-23 | 2014-05-23 | A kind of wind power generating set |
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| Publication Number | Publication Date |
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| CN203962304U true CN203962304U (en) | 2014-11-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420268518.9U Expired - Fee Related CN203962304U (en) | 2014-05-23 | 2014-05-23 | A kind of wind power generating set |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103967721A (en) * | 2014-05-23 | 2014-08-06 | 张东升 | Wind generating set |
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2014
- 2014-05-23 CN CN201420268518.9U patent/CN203962304U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103967721A (en) * | 2014-05-23 | 2014-08-06 | 张东升 | Wind generating set |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141126 Termination date: 20160523 |
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| CF01 | Termination of patent right due to non-payment of annual fee |