CN103742361A - Yaw system and wind-driven generator set - Google Patents
Yaw system and wind-driven generator set Download PDFInfo
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- CN103742361A CN103742361A CN201310744863.5A CN201310744863A CN103742361A CN 103742361 A CN103742361 A CN 103742361A CN 201310744863 A CN201310744863 A CN 201310744863A CN 103742361 A CN103742361 A CN 103742361A
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- driftage
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- oil cylinder
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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
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
The invention discloses a yaw system and a wind-driven generator set. The yaw system comprises a yaw bearing and a yaw driving mechanism. The yaw driving mechanism comprises an oil cylinder and a gear; one of the inner ring and the outer ring of the yaw bearing is provided with a gear ring, and the gear is fixedly mounted on the other of the inner ring and the outer ring of the yaw bearing and engaged with the gear ring; the first end of the oil cylinder is rotatably connected to the eccentric position on one side of the gear, and the second end of the oil cylinder is rotatably connected with the other of the inner ring and the outer ring of the yaw bearing. The yaw system effectively reduces the number of parts and the structural complexity, the integral weight and the manufacturing cost, easily achieves stability during the yawing process and can omit an opposing torque providing device and a yaw brake device to avoid waste of energy.
Description
Technical field
The present invention relates to fan yaw technical field, particularly a kind of yaw system and wind power generating set.
Background technique
The device that wind power generating set (abbreviation blower fan) is is electric energy by wind energy transformation, wind power generating set is partly comprised of impeller, transmission system, generator, yaw system and pitch-controlled system etc. conventionally.Wherein, yaw system is mainly the impact causing in order to tackle wind direction uncertainty, particularly, under common situation, when vane rotary plane is vertical with airflow direction (wind direction), the wind energy that blower fan can obtain is maximum, yet wind direction changes often, when vane rotary plane and wind direction are during in non-perpendicular position, need make vane rotary plane perpendicular to (aligning) wind direction by yaw system.
The Chinese patent literature that is numbered CN201320004154 discloses existing a kind of typical yaw system, this yaw system mainly comprises driftage bearing, 3 yaw motors, 1 driftage oil hydraulic motor and the braking device of going off course, wherein, outer ring and the pylon of driftage bearing are fixed, inner ring and cabin are fixed, outer ring is provided with external toothing, 3 yaw motors and 1 driftage oil hydraulic motor are all installed on cabin, and the output terminal of 3 yaw motors and 1 driftage oil hydraulic motor is all meshed with the external toothing of yaw axis bearing outer-ring by reducer gear, driftage braking device comprise the driftage drag friction dish fixing with yaw axis bearing outer-ring and with the fixing driftage brake device of driftage bearing inner race.
In the course of the work, when needs are gone off course to wind, 3 yaw motors provide normal moment, 1 driftage oil hydraulic motor provides opposing torque (playing drag effect), under original state, the moment of driftage oil hydraulic motor is less than the moment of 3 yaw motors, driftage brake device is separated with driftage drag friction dish, when blower fan is about to rotate to vane rotary face when vertical with wind direction, to reach gradually balance consistent for the moment size of the moment of three yaw motors and driftage oil hydraulic motor, simultaneously go off course brake device and driftage drag friction dish starts to contact and carries out friction work, by controlling the braking effect of brake device braking clamp, can reduce gradually the rotational speed of driftage, until driftage is to wind end-of-job.
In such scheme, adopt and provide the driftage oil hydraulic motor of opposing torque to match with a plurality of yaw motors of normal moment are provided, and adopt the auxiliary realization driftage of driftage brake device brake, can make like this driftage process more steady.Yet the required component of this scheme are more, complex structure, has increased complete machine weight and cost; In addition, driftage oil hydraulic motor provides opposing torque, and driftage need to realize brake by friction while finishing, and has caused like this waste of energy; In addition, driftage braking device frequent movement, related components need to be changed often, has also increased like this maintenance cost of later stage use when increasing complete machine manufacture cost.
Therefore, how for existing above-mentioned deficiency and defect, improving, to more adapt to the needs of Wind Power Development, is those skilled in the art's technical problems urgently to be resolved hurrily.
Summary of the invention
In view of this, one of object of the present invention is to provide a kind of yaw system, effectively to reduce structural complexity and the manufacture cost of yaw system, effectively improves capacity usage ratio and maintainability, and contributes to realize the stationarity of driftage process.
Particularly, this yaw system comprises driftage bearing and driftage driving mechanism, described driftage driving mechanism comprises oil cylinder and gear, wherein: in the inner ring of described driftage bearing and the one in outer ring, be provided with gear ring, the inner ring of the mounting point of described gear and described driftage bearing and the another one in outer ring are fixed, described gear is meshed with described gear ring, the eccentric position of the first end of described oil cylinder and described gear one side is rotatably connected, and the second end of described oil cylinder and the inner ring of described driftage bearing and the another one in outer ring are rotatably connected.
Further, described driftage driving mechanism is a plurality of.
Further, each gear being circumferentially evenly arranged along described gear ring of described a plurality of driftage driving mechanisms.
Further, in arbitrary driftage driving mechanism, the residing plane of rotation axis of the first end tie point of described oil cylinder and described gear and the angle between the flexible direction of oil cylinder are to drive angle, and the driving angle of at least one driftage driving mechanism is different from the driving angle of other driftage driving mechanisms.
Further, described driftage driving mechanism also comprises crank, and a side of the first end of described crank and described gear is fixed, and the second end of described crank and the first end of described oil cylinder are rotatably connected.
Further, described yaw system also comprises oil hydraulic circuit, described oil hydraulic circuit comprises fuel tank, oil pump and selector valve, the inlet port of described oil pump is connected to fuel tank, the oil outlet of described oil pump is connected to the filler opening of described selector valve, the return opening of described selector valve is connected to fuel tank, and the first actuator port of described selector valve and the second actuator port are connected to respectively rodless cavity and the rod chamber of described oil cylinder.
Further, on the oil circuit between described selector valve and described oil cylinder, be provided with equilibrium valve or hydraulic lock.
Further, described selector valve is Proportional valve, and described yaw system also comprises controller, and described controller is used for controlling described selector valve in opening state when needs are gone off course to wind, and controls described selector valve in closed condition when completing driftage to wind.
Further, on the cylinder barrel of described oil cylinder, be arranged at intervals with the first approach switch and the second approach switch, described the first approach switch and described the second approach switch send information to described controller at above-mentioned oil cylinder respectively when first stretches state and when second stretches state, and described controller is also for controlling described selector valve commutation according to the information of described the first approach switch and described the second approach switch transmission; Or, on described gear or described gear ring, being provided with rotating coder, described controller is also for controlling described selector valve commutation according to the output information of described rotating coder.
Another object of the present invention is to provide a kind of wind power generating set, to reduce manufacture cost and the maintenance difficulties of complete machine, and energy-conserving and environment-protective and can reach corresponding driftage effect.
Particularly, this wind power generating set comprises pylon and cabin, also comprise the yaw system described in above-mentioned any one, the inner ring of described pylon and described driftage bearing and the one in outer ring are fixed, and the inner ring of described cabin and described driftage bearing and the another one in outer ring are fixed.
While adopting yaw system of the present invention, when needs are gone off course to wind, can make oil cylinder make fore and aft motion, oil cylinder driven gear is rotated, and then rotate with respect to inner ring (cabin is with respect to pylon) outer ring of the bearing that makes to go off course, when vane rotary plane is during perpendicular to (aligning) wind direction, make oil cylinder stop fore and aft motion and can finish driftage to wind work.Hence one can see that, and compared with prior art, yaw system of the present invention mainly comprises oil cylinder and gear etc., has effectively reduced amount of parts, simple and reliable for structure, effectively reduces complete machine weight and manufacture cost; In addition, in the present invention, driftage only needs to make fore and aft motion and stop fore and aft motion by controlling respectively oil cylinder to the beginning of wind work and end, be easy to realize the stationarity of driftage to wind process, the opposing torque generator and the driftage braking device that play drag effect can be set, thereby can improve capacity usage ratio, reduce the waste of energy; In addition, due to driftage braking device can be set, can reduce complete machine cost, and be convenient to safeguard.
In a kind of optional scheme, driftage driving mechanism is a plurality of, can further improve like this driftage to the stationarity of wind process and reliability.
In a kind of optional scheme, driftage driving mechanism is a plurality of, and the driving angle of at least one driftage driving mechanism is different with the driving angle of other driftage driving mechanisms, can avoid like this each oil cylinder simultaneously in driving dead center position, make to go off course to wind process continuous and stable more.
In a kind of optional scheme, yaw system also comprises oil hydraulic circuit, can realize like this control of the flexible state of oil cylinder by controlling the working state of selector valve in oil hydraulic circuit.
In a kind of optional scheme, on the oil circuit between selector valve and oil cylinder, be provided with equilibrium valve or hydraulic lock, the locking of oil cylinder under arbitrary flexible state can be realized like this, thereby driftage steadily reliably carrying out wind process can be realized.
Wind power generating set of the present invention has above-mentioned yaw system, thereby can reduce manufacture cost and the maintenance difficulties of complete machine, and more energy-conserving and environment-protective and can reach corresponding driftage effect.
Accompanying drawing explanation
The accompanying drawing that forms a part of the present invention is used to provide a further understanding of the present invention, and schematic description and description of the present invention is used for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
The structural representation of a kind of yaw system that Fig. 1 provides for the embodiment of the present invention one;
The structural representation of a kind of yaw system that Fig. 2 provides for the embodiment of the present invention two;
Fig. 3 is the principle schematic of the oil hydraulic circuit of yaw system shown in Fig. 1 and Fig. 2.
Primary component symbol description in figure:
1 driftage bearing
2 gears
3 cranks
4 oil cylinders
5 gear rings
6 first approach switchs
7 second approach switchs
8 first equilibrium valves
9 second equilibrium valves
11 outer rings
12 inner rings
13 selector valves
14 oil pumps
21 gear shafts
41 cylinder barrels
42 piston rods
43 second hinges
44 first hinges
Embodiment
It should be pointed out that in this part to be only the explanation to specific embodiment to the description of concrete structure and description order, should not be considered as that protection scope of the present invention is had to any restriction.In addition,, under the situation of not conflicting, embodiment and the feature in embodiment in this part can combine mutually.
Please refer to Fig. 1 to Fig. 3, below in conjunction with accompanying drawing, the embodiment of the present invention is elaborated.
Shown in Fig. 1, embodiment one yaw system comprises driftage bearing 1 and driftage driving mechanism, and driftage driving mechanism further comprises gear 2, crank 3, oil cylinder 4.
Wherein, on the outer ring 11 of driftage bearing 1, being provided with gear ring 5 in gear ring 5(Fig. 1 is external toothing), the mounting point of gear 2 is fixing with the inner ring 12 of driftage bearing 1, and gear 2 is meshed with gear ring 5, one side of the first end of crank 3 and gear 2 is fixed, the second end of crank 3 and the first end of oil cylinder 4 are rotatably connected, and the second end of oil cylinder 4 is rotatably connected with the inner ring 12 of driftage bearing 1.As shown in Figure 1, in the present embodiment, driftage driving mechanism is four, and four gears 2 of four driftage driving mechanisms are along the outer circumferential interval setting of gear ring 5.
In specific implementation process, the outer ring 11 of driftage bearing 1 can be fixed with the top of pylon (not shown), and the inner ring 12 of driftage bearing 1 can be fixed with the bottom of cabin (not shown); Gear 2 can be fixedly installed in rotationally by its gear shaft 21 bottom in cabin, the first end of crank 3 can be fixing with the gear shaft 21 of gear 2 one sides, the second end of crank 3 can be with the external part (as the first end of oil cylinder 4) of oil cylinder 4 piston rods 42 hinged (corresponding to the first hinge 44), the end of the cylinder barrel 41 of oil cylinder 4 (as the second end of oil cylinder 4) can with driftage bearing 1 inner ring 12 hinged (corresponding to the second hinge 43).
For the ease of the flexible state to each oil cylinder 4, control, yaw system can also comprise following preferred oil hydraulic circuit, as shown in Figure 3, this oil hydraulic circuit comprises hydraulic oil container (shown in figure but do not mark), oil pump 14, selector valve 13, the first equilibrium valve 8 and the second equilibrium valve 9; Selector valve 13 is preferably the three-position four-way valve that Median Function is Y type, certainly, under other situations, is not limited to this; The number of selector valve 13, the first equilibrium valve 8 and the second equilibrium valve 9 equates with the number of oil cylinder 4, for the aspect of describing, only with regard to the annexation of single oil cylinder 4, single the first equilibrium valve 8, single the second equilibrium valve 9 and single selector valve 13, describes below.
As shown in Figure 3, the output terminal of the line shaft of oil pump 14 and motor M is in transmission connection, the inlet port of oil pump 14 (passing through filter) is connected to fuel tank, the oil outlet of oil pump 14 is connected to the oil inlet P of selector valve 13, the oil return inlet T of selector valve 13 is connected to fuel tank, the first actuator port A of selector valve 13 and the second actuator port B are connected to respectively the free filler opening of the first equilibrium valve 8 and the free filler opening of the second equilibrium valve 9, the free oil outlet of the free oil outlet of the first equilibrium valve 8 and the second equilibrium valve 9 is connected to respectively rodless cavity and the rod chamber of oil cylinder 4, the control port of the control port of the first equilibrium valve 8 and the second equilibrium valve 9 is communicated in respectively the second actuator port B and the first actuator port A.
In order more clearly to show advantage of the present invention, below in conjunction with working principle and the technique effect of concrete scene explanation above-described embodiment optimal way.
In the course of the work, under original state, selector valve 13 is in meta, the piston rod of oil cylinder 4 is fixed on a certain position, when needs are gone off course to wind, motor M drives oil pump 14 runnings, can make selector valve 13 in left position or right position (selector valve 13 is in opening state), make oil cylinder 4 make fore and aft motion, and then oil cylinder 4 is rotated by crank 3 driven gears 2, thereby gear 2 is rotated together with inner ring 12 with respect to the outer ring 11 that is provided with gear ring 5, being equivalent to cabin rotates with respect to pylon, when vane rotary plane is during perpendicular to (aligning) wind direction, can make selector valve 13 in meta (selector valve 13 is in closed condition), make the rod chamber of oil cylinder 4 and rodless cavity all in oil return state, oil cylinder 4 by under the effect at the first equilibrium valve 8 and the second equilibrium valve 9 in locking state, the piston rod that is oil cylinder 4 maintains static maintenance, can finish like this driftage to wind work.
From above-mentioned analysis, compared with prior art, the yaw system of above-described embodiment mainly comprises crank 3, oil cylinder 4 and gear 2 etc., has effectively reduced amount of parts, simple and reliable for structure, effectively reduces complete machine weight and manufacture cost; In addition, driftage only needs by adjusting the working state (to control the fore and aft motion of oil cylinder 4) of selector valve 13 beginning of wind work and end, also can realize oil cylinder 4 at the locking (to realize driftage braking) of any telescopic location by the first equilibrium valve 8 and the second equilibrium valve 9, can make like this driftage steadily reliably carry out wind process, and opposing torque generator and the driftage braking device of drag effect can be set, thereby can improve capacity usage ratio, reduce the waste of energy; In addition, due to driftage braking device can be set, can reduce complete machine cost, and be convenient to safeguard.
It should be noted that, in specific implementation process, the yaw system of above-described embodiment can also adopt following at least one preferred version:
One, each gear 2, along being circumferentially evenly arranged of outer ring, can further improve driftage like this to the stationarity of wind process and reliability; On this basis, each oil cylinder 4 can upwards be evenly arranged in the week of inner ring 12 with the second hinge 43 of inner ring 12, so also can further improve driftage to the stationarity of wind process and reliability.
Two,, in arbitrary driftage driving mechanism, the residing plane of rotation axis of the first end tie point of oil cylinder 4 (being the first hinge 44 in embodiment one) and gear 2 and the angle between the flexible direction of oil cylinder 4 are to drive angle, for fear of each oil cylinder 4 simultaneously in driving dead center position, the second hinge 43 in driving mechanism of avoiding respectively going off course, the axis of the first hinge 44 and gear shaft 21 (being the rotation axis of gear 2) is simultaneously in the same plane, can make the driving angle of at least one driftage driving mechanism and the driving angle different (situations as shown in Figure 1) of other driftage driving mechanisms, like this, when one of them oil cylinder 4 is when driving dead center position, under the effect of other oil cylinders 4, in driving the oil cylinder 4 of dead center position can continue motion, be that this scheme can make driftage to wind process continuous and stable more.
Three, for the ease of realizing the steady control of driftage to wind process, selector valve 13 is adoption rate valve preferably, shown in Fig. 1, like this can by selector valve 13 electromagnetic coil DT1 or DT2 electricity condition and electric how many to realize the working state control of selector valve 13, for example, when needs are gone off course to wind, can slowly open by controlling the little selector valve 13 that makes of TV university that obtains of DT1 or DT2, when driftage finishes wind, can close gradually by controlling the little selector valve 13 that makes of TV university that obtains of DT1 or DT2, can effectively improve like this driftage to the stationarity of wind process and continuity.
On this basis, yaw system can also comprise controller, and controller is used for controlling selector valve 13 in opening state when needs are gone off course to wind, and controls selector valve 13 in closed condition when completing driftage to wind.On this basis, can on the cylinder barrel 41 of oil cylinder 4, the first approach switch 6 and the second approach switch 7 be set interval, when the first approach switch 6 and the second approach switch 7 are respectively used at oil cylinder 4 during in the first flexible state (when retracted completely) and the second flexible state, (when stretched out completely) sends information to controller, and the information that controller also sends according to the first approach switch 6 and the second approach switch 7 is controlled selector valve 13 and commutated; Certainly, the mode that realizes 13 commutations of controller control selector valve has varied, for example, also can on gear 2 or gear ring 5, rotating coder be installed, rotating coder sends information to controller in real time, controller is also according to the output information of rotating coder and the gear 2(prestoring in advance or gear ring 5), the dimension information of crank 3, oil cylinder 4 judges that oil cylinder 4, whether in the first flexible state or the second flexible state, if so, controls selector valve 13 commutations.During concrete enforcement, controller can adopt PLC(Programmable Logic Controller, programmable logic controller (PLC)) build, PLC receives each sensor and (comprises wind transducer, each approach switch or rotating coder, etc.) live signal, and be connected with the electromagnetic coil of selector valve 13 by driving circuit for electromagnetic valve, so that in needs, by driving circuit for electromagnetic valve, control obtaining electricity condition and how much electricly obtaining of selector valve 13 electromagnetic coils.
Four, the first equilibrium valve 8 in oil hydraulic circuit and the second equilibrium valve 9 can adopt hydraulic lock to replace, and the structure of hydraulic lock and equilibrium valve and working principle can, referring to the associated description of prior art, no longer be launched at this.
It should be noted that, in above-described embodiment, outer ring 11 at driftage bearing 1 arranges gear ring 5, the mounting point of each gear 2 and inner ring 12 are fixing, the second end and the inner ring 12 of oil cylinder 4 are rotatably connected, but in other are implemented, be not limited to this, for example, in the embodiment two shown in Fig. 2, gear ring 5(Figure 2 shows that ring gear) be arranged on the inner ring 12 of driftage bearing 1, the mounting point of gear 2 is fixing with the outer ring 11 of driftage bearing 1, the second end of oil cylinder 4 is rotatably connected with the outer ring 11 of driftage bearing 1, the annexation of embodiment's two other parts and corresponding expansion can be referring to embodiment one descriptions, embodiment two yaw system also can be realized embodiment one technique effect.
It should be noted that, in above-mentioned various embodiment, driftage driving mechanism comprises oil cylinder 4, crank 3 and gear 2 simultaneously, by crank 3, gear 2 is connected with oil cylinder 4, can increases the revolution driving radius of gear 2, so that actuation gear 2 better, but in other embodiments, be not limited to this, if adopt other modes that the first end of oil cylinder 4 and the eccentric position of gear 2 one sides are rotatably connected (as hinged), this scheme also can realize corresponding function of the present invention.
It should be noted that, in above-mentioned various embodiments, all with four driftage driving mechanisms, be illustrated, but in other embodiments, be not limited to this, can also adopt the driftage driving mechanism of other numbers, for example one (not preferred), two, more than three or four.
Other embodiments of the invention also provide a kind of wind power generating set, this wind power generating set comprises pylon and cabin, also comprise the yaw system described in above-mentioned any one embodiment, pylon is fixed with the inner ring of driftage bearing and the one in outer ring, and the inner ring of cabin and described driftage bearing and the another one in outer ring are fixed.From the technique effect of aforementioned yaw system, this wind power generating set can effectively reduce manufacture cost and the maintenance difficulties of complete machine, and more energy-conserving and environment-protective and can reach corresponding driftage effect.The specific implementation process of other parts of wind power generating set can, referring to the associated description of prior art, hereby not repeat.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. a yaw system, is characterized in that, described yaw system comprises driftage bearing (1) and driftage driving mechanism, and described driftage driving mechanism comprises oil cylinder (4) and gear (2), wherein:
In the inner ring (12) of described driftage bearing (1) and the one in outer ring (11), be provided with gear ring (5), the inner ring (12) of the mounting point of described gear (2) and described driftage bearing (1) and the another one in outer ring (11) are fixed, described gear (2) is meshed with described gear ring (5), the eccentric position of the first end of described oil cylinder (4) and described gear (2) one sides is rotatably connected, and the inner ring (12) of the second end of described oil cylinder (4) and described driftage bearing (1) and the another one in outer ring (11) are rotatably connected.
2. yaw system as claimed in claim 1, is characterized in that, described driftage driving mechanism is a plurality of.
3. yaw system as claimed in claim 2, is characterized in that, each gear (2) being circumferentially evenly arranged along described gear ring (5) of described a plurality of driftage driving mechanisms.
4. yaw system as claimed in claim 2, it is characterized in that, in arbitrary driftage driving mechanism, the angle between the residing plane of rotation axis of the first end tie point of described oil cylinder (4) and described gear (2) and the flexible direction of oil cylinder (4) is to drive angle; The driving angle of at least one driftage driving mechanism is different from the driving angle of other driftage driving mechanisms.
5. yaw system as claimed in claim 1, it is characterized in that, described driftage driving mechanism also comprises crank (3), and a side of the first end of described crank (3) and described gear (2) is fixed, and the first end of the second end of described crank (3) and described oil cylinder (4) is rotatably connected.
6. the yaw system as described in claim 1 to 5 any one, it is characterized in that, described yaw system also comprises oil hydraulic circuit, described oil hydraulic circuit comprises fuel tank, oil pump (14) and selector valve (13), the inlet port of described oil pump (14) is connected to fuel tank, the oil outlet of described oil pump (14) is connected to the filler opening (P) of described selector valve (13), the return opening (T) of described selector valve (13) is connected to fuel tank, and first actuator port (A) of described selector valve (13) and the second actuator port (B) are connected to respectively rodless cavity and the rod chamber of described oil cylinder (4).
7. yaw system as claimed in claim 6, is characterized in that, on the oil circuit between described selector valve (13) and described oil cylinder (4), is provided with equilibrium valve or hydraulic lock.
8. yaw system as claimed in claim 6, it is characterized in that, described selector valve (13) is Proportional valve, described yaw system also comprises controller, described controller is used for controlling described selector valve (13) in opening state when needs are gone off course to wind, and controls described selector valve (13) in closed condition when completing driftage to wind.
9. yaw system as claimed in claim 8, it is characterized in that, on the cylinder barrel (41) of described oil cylinder (4), be arranged at intervals with the first approach switch (6) and the second approach switch (7), described the first approach switch (6) and described the second approach switch (7) send information to described controller at described oil cylinder (4) respectively when first stretches state and when second stretches state, and described controller is also for controlling described selector valve (13) commutation according to the information of described the first approach switch and described the second approach switch transmission;
Or, on described gear (2) or described gear ring (5), being provided with rotating coder, described controller is also for controlling described selector valve (13) commutation according to the output information of described rotating coder.
10. a wind power generating set, comprise pylon and cabin, it is characterized in that, also comprise the yaw system described in claim 1 to 9 any one, the inner ring (12) of described pylon and described driftage bearing (1) and the one in outer ring (11) are fixed, and the inner ring (12) of described cabin and described driftage bearing (1) and the another one in outer ring (11) are fixed.
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| CN201310744863.5A CN103742361B (en) | 2013-12-30 | 2013-12-30 | Yaw system and wind-driven generator set |
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| CN201310744863.5A CN103742361B (en) | 2013-12-30 | 2013-12-30 | Yaw system and wind-driven generator set |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105020097A (en) * | 2015-06-03 | 2015-11-04 | 上海交通大学 | Sea wave wind power generation energy conversion device |
| CN105041566A (en) * | 2015-07-10 | 2015-11-11 | 三一重型能源装备有限公司 | Wind driven generator and control system and method of hydraulic yawing device thereof |
| CN105089930A (en) * | 2015-07-21 | 2015-11-25 | 三一重型能源装备有限公司 | Yaw control method and yaw hydraulic control system of wind driven generator |
| CN106762407A (en) * | 2017-02-07 | 2017-05-31 | 浙江工业职业技术学院 | The wind mill pitch-variable system that proportional valve control two-stage screw oscillating oil cylinder drives |
| CN113227572A (en) * | 2018-12-20 | 2021-08-06 | 维斯塔斯风力系统有限公司 | Method and apparatus for testing a yaw system |
| CN113482850A (en) * | 2021-06-24 | 2021-10-08 | 浙江大学 | Distributed electro-hydraulic driven fan yawing and braking system |
| CN114251230A (en) * | 2021-12-20 | 2022-03-29 | 浙江中车尚驰电气有限公司 | Axial adjustable wind driven generator capable of quickly dissipating heat |
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