CN106121915A - Blower fan hydraulic variable propeller system and method - Google Patents
Blower fan hydraulic variable propeller system and method Download PDFInfo
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- CN106121915A CN106121915A CN201610772185.7A CN201610772185A CN106121915A CN 106121915 A CN106121915 A CN 106121915A CN 201610772185 A CN201610772185 A CN 201610772185A CN 106121915 A CN106121915 A CN 106121915A
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- 238000000034 method Methods 0.000 title claims abstract description 20
- 230000008859 change Effects 0.000 claims description 13
- 230000008878 coupling Effects 0.000 claims description 13
- 238000010168 coupling process Methods 0.000 claims description 13
- 238000005859 coupling reaction Methods 0.000 claims description 13
- 239000002828 fuel tank Substances 0.000 claims description 8
- 239000012530 fluid Substances 0.000 claims description 6
- 239000002699 waste material Substances 0.000 abstract description 7
- 230000000694 effects Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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- 230000035772 mutation Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D7/00—Controlling wind motors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2270/00—Control
- F05B2270/30—Control parameters, e.g. input parameters
- F05B2270/32—Wind speeds
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2270/00—Control
- F05B2270/30—Control parameters, e.g. input parameters
- F05B2270/328—Blade pitch angle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2270/00—Control
- F05B2270/50—Control logic embodiment by
- F05B2270/506—Control logic embodiment by hydraulic means, e.g. hydraulic valves within a hydraulic circuit
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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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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Wind Motors (AREA)
Abstract
The invention discloses a kind of blower fan hydraulic variable propeller system and method, described system includes each actuating device of connection corresponding with each blade of blower fan；Also include the hydraulic system being connected with each described actuating device power, and the limiting component consistent with the number of described blade；The pressure of described hydraulic system is steady state value, so that described blade realizes becoming oar in real time by the equilibrium tendency of current wind load with the pressure of described hydraulic system；Described steady state value be unit under completely sending out wind speed, the wind load that described blade is subject to when being maintained at maximum wind area position；It is described maximum wind area position that described limiting component can limit the extreme position of described blade rotation.This blower fan hydraulic variable propeller system can make blade automatically adapt to wind regime to become oar in real time, power loss wind energy waste during to avoid wind speed to diminish, parts damages and unit fault when wind speed can also be prevented excessive simultaneously.
Description
Technical field
The present invention relates to technical field of wind power generation, particularly relate to a kind of blower fan hydraulic variable propeller system and method.
Background technology
The pitch-controlled system of wind power generating set is passive type change oar at present, in needing wind measuring system one time period of monitoring
Mean wind speed or monitoring wheel speed, when mean wind speed completely sends out wind speed or wheel speed less than or equal to unit less than or equal to unit
When completely sending out during wheel speed, turbines vane is in maximum wind area position, when the mean wind speed monitored completely is sent out more than unit
When wind speed or wheel speed are completely sent out more than unit during wheel speed, feed back to pitch-controlled system by the master control of blower fan and make blade passive
Becoming oar, now, vane propeller-changing has hysteresis quality, can there is following problems:
Initial wind speed less (less than completely sending out wind speed), blade is in maximum wind area position, in wind measuring system monitoring
In one time period, if wind speed becomes big (more than or equal to completely sending out wind speed), because now wind measuring system does not feed back and makes blade become
Oar, so the wind load that time period intra vane is subject to can become big, electromotor there will be phenomenon of overrunning, so that blade and dependent part
Part by abnormal load, is caused parts damages and unit fault by wind speed mutation.
Initial wind speed relatively big (more than or equal to completely sending out wind speed), blade is in the less position of wind area, supervises at wind measuring system
In the time period surveyed, if wind speed diminishes (less than completely sending out wind speed), because now wind measuring system does not feed back and makes blade become
Oar, so the wind load that time period intra vane is subject to can diminish, generated energy wind speed the most at that time can be less simultaneously, makes power damage
Go wrong and can waste.
In view of this, how to improve the pitch-controlled system of existing blower fan, enable the blade of blower fan automatically to adapt to wind regime real-time
Become oar, power loss wind energy waste during to avoid wind speed to diminish, parts damages and unit event when wind speed can also be prevented excessive simultaneously
Barrier, is that those skilled in the art are presently required and solve the technical problem that.
Summary of the invention
It is an object of the invention to provide a kind of blower fan hydraulic variable propeller system and method, this blower fan hydraulic variable propeller system and method
Blade can be made automatically to adapt to wind regime and to become oar in real time, power loss wind energy waste during to avoid wind speed to diminish, can also prevent simultaneously
Parts damages and unit fault when wind speed is excessive.
For solving above-mentioned technical problem, the present invention provides a kind of blower fan hydraulic variable propeller system, including each blade with blower fan
The corresponding each actuating device connected；Also include the hydraulic system being connected with each described actuating device power, and with described blade
The consistent limiting component of number；The pressure of described hydraulic system is steady state value, so that described blade is by current wind load and institute
The equilibrium tendency of the pressure stating hydraulic system realizes becoming oar in real time；
Described steady state value be unit under completely sending out wind speed, the wind that described blade is subject to when being maintained at maximum wind area position
Carry；It is described maximum wind area position that described limiting component can limit the extreme position of described blade rotation.
As above, blade is connected with hydraulic system power by actuating device, and the pressure of this hydraulic system is steady state value, this perseverance
Definite value makes unit under completely sending out wind speed, and blade is maintained at maximum wind area position, and this relevant position is provided with spacing
Parts, to limit the extreme position that blade rotates；It is to say, hydraulic system conduction is to the power of blade, with unit at Man Fafeng
During speed, the dynamic balance that blade is subject to when being in maximum wind area position, so, when wind speed changes, the wind load that blade is subject to
Changing therewith, and hydraulic system conduction is invariable to the power of blade, under the effect of both differences, blade can be subject to from trend
Wind area is little or wind area is big direction rotates and becomes oar, thus realizes blade and automatically adapt to wind regime and become oar in real time, specific as follows:
Initial wind speed less (less than completely sending out wind speed), blade is in maximum wind area position, when wind speed becomes big (more than full
Send out wind speed), the wind load that blade is subject to becomes big, and more than the power of hydraulic system conduction to blade, blade overcomes the hydraulic pressure of hydraulic system
Oar can be become to the direction that wind area is little, owing to blade rotates change oar according to wind load and the difference of hydraulic coupling, it is possible to from
The dynamic wind regime that adapts to becomes oar, fast response time, it is possible to avoid in prior art because wind load becomes big blade and associated components is carried extremely
Parts damages that lotus causes and unit fault；
Initial wind speed relatively big (more than completely sending out wind speed), blade is in the less position of wind area, when wind speed diminishes (less than full
Send out wind speed), the wind load that blade is subject to diminishes, and less than the power of hydraulic system conduction to blade, the hydraulic energy transfer of hydraulic system is
Mechanical energy exports, and makes blade become oar at maximum wind area by actuating device, and blade turns at maximum wind area
After under the position-limiting action of limiting component stop, to avoid the waste of wind energy；
Therefore, the blower fan hydraulic variable propeller system that the present invention provides can make blade automatically adapt to wind regime to become oar in real time,
Power loss wind energy waste during to avoid wind speed to diminish, parts damages and unit fault when wind speed can also be prevented excessive simultaneously.
Optionally, described hydraulic system includes the two-way hydraulic motor consistent with described actuating device number, each described double
Connect with corresponding described actuating device to the clutch end of hydraulic motor；Two hydraulic fluid ports of described two-way hydraulic motor are respectively
Connect with system pressure oil circuit and oil return circuit.
Optionally, described hydraulic system also includes the hydraulic pump driving each described two-way hydraulic motor to work, described hydraulic pressure
The oil-out of pump connects with fuel tank also by the first overflow valve.
Optionally, described hydraulic system also includes reversal valve, and described reversal valve is for controlling described two-way hydraulic motor
Two hydraulic fluid ports connect with described system pressure oil circuit or described oil return circuit respectively.
Optionally, the second overflow valve it is additionally provided with between described oil return circuit and described fuel tank.
Optionally, described hydraulic pump is variable pump.
Optionally, described actuating device includes the pitch variable bearings being connected with described blade and is connected with described pitch variable bearings
Driving member, described driving member is connected with the clutch end of described two-way hydraulic motor.
Optionally, described driving member is connected with the clutch end of described two-way hydraulic motor by two-way decelerator.
Optionally, described driving member is cog belt or gear.
The present invention also provides for a kind of blower fan hydraulic vane change method, and described method includes: the blade of fan provides a perseverance
Determine hydraulic coupling, the size of described constant hydraulic coupling be unit under completely sending out wind speed, described blade is when maximum wind area position
The wind load size being subject to；Described blade becomes oar, wherein, institute in real time according to the equilibrium tendency of current wind load Yu described constant hydraulic coupling
The extreme position stating blade rotation is described maximum wind area position.
Consistent with the principle of above-mentioned blower fan hydraulic variable propeller system, this blower fan hydraulic vane change method has identical technology effect
Really, repeat no more here.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of a kind of specific embodiment of blower fan hydraulic variable propeller system provided by the present invention；
Fig. 2 is the principle schematic of hydraulic system in Fig. 1；
Fig. 3 shows the attachment structure signal of the two-way hydraulic motor of hydraulic system and actuating device in specific embodiment
Figure；
Fig. 4 is the flow chart of blower fan a kind of detailed description of the invention of hydraulic vane change method provided by the present invention.
In figure:
Hydraulic system 10, two-way hydraulic motor 11, hydraulic pump 12, the first overflow valve 13, the second overflow valve 14, reversal valve
15, fuel tank 16；
Actuating device 20, two-way decelerator 21, driving member 22, pitch variable bearings 23；
Blade 30.
Detailed description of the invention
In order to make those skilled in the art be more fully understood that the present invention program, below in conjunction with the accompanying drawings and detailed description of the invention
The present invention is described in further detail.
Refer to the structured flowchart that Fig. 1, Fig. 1 are a kind of specific embodiment of blower fan hydraulic variable propeller system provided by the present invention.
For variable pitch type blower fan, each blade has relatively independent pitch drive system.
The blower fan hydraulic variable propeller system that this embodiment provides, each transmission including connection corresponding with each blade 30 of blower fan fills
Put 20；Also include the hydraulic system 10 being connected with each actuating device 20 power, and the limiting section consistent with the number of blade 30
Part；The pressure of hydraulic system 10 is steady state value, so that blade 30 is become by the balance of current wind load with the pressure of hydraulic system 10
Gesture realizes becoming oar in real time；This steady state value be unit under completely sending out wind speed, blade 30 is subject to when being maintained at maximum wind area position
Wind load；It is maximum wind area position that limiting component can limit the extreme position of blade 30 rotation.
As above, in the program, blade 30 is connected with hydraulic system 10 power by actuating device 20, this hydraulic system 10
Pressure is steady state value, and this steady state value makes unit under completely sending out wind speed, and blade 30 is maintained at maximum wind area position, and should
Relevant position is provided with limiting component, to limit the extreme position that blade 30 rotates；It is to say, hydraulic system 10 is conducted to leaf
The power of sheet 30, with unit when completely sending out wind speed, the dynamic balance that blade 30 is subject to when being in maximum wind area position, so, when
During wind speed change, the wind load that blade 30 is subject to changes therewith, and hydraulic system 10 is conducted to the power of blade 30 invariable, two
Under the effect of person's difference, blade 30 can rotate change oar in little from trend wind area or that wind area is big direction, thus realizes
Blade 30 automatically adapts to wind regime and becomes oar in real time, specific as follows:
Initial wind speed less (less than completely sending out wind speed), blade 30 is in maximum wind area position, (is more than greatly when wind speed becomes
Completely send out wind speed), the wind load that blade 30 is subject to becomes big, conducts the power to blade 30 more than hydraulic system 10, and blade 30 overcomes hydraulic pressure
The hydraulic energy of system 10 becomes oar, owing to blade 30 rotates change according to wind load and the difference of hydraulic coupling to the direction that wind area is little
Oar, it is possible to automatically adapt to wind regime to become oar, fast response time, it is possible to avoid in prior art because wind load becomes big blade 30 and phase
Close parts damages and unit fault that parts are caused by abnormal load；
Initial wind speed relatively big (more than completely sending out wind speed), blade 30 is in the less position of wind area, (is less than when wind speed diminishes
Completely send out wind speed), the wind load that blade 30 is subject to diminishes, and conducts the power to blade 30, the liquid of hydraulic system 10 less than hydraulic system 10
Pressure energy is converted into mechanical energy output, and makes blade 30 become oar at maximum wind area by actuating device 20, and blade 30 rotates
Stop under the position-limiting action of limiting component, to avoid the waste of wind energy after to maximum wind area.
It is the principle schematic of hydraulic system in Fig. 1 please also refer to Fig. 2 and Fig. 3, Fig. 2；Fig. 3 shows specific embodiment
The two-way hydraulic motor of middle hydraulic system and the attachment structure schematic diagram of actuating device.
For ease of describing, hereafter with blower fan, there are three blades 30 and carry out exemplary illustration, it will be understood that the blade 30 of blower fan
Number can also be other, and the protection domain of the application is not construed as limiting by blade 30 number.
This hydraulic system 10 includes three two-way hydraulic motors 11, the clutch end of each hydraulic motor 11 and corresponding biography
Dynamic device 20 connects, and two hydraulic fluid ports of two-way hydraulic motor 11 connect with system pressure oil circuit and oil return circuit respectively.
It is mechanical energy by two-way hydraulic motor 11 by the hydraulic energy transfer of hydraulic system 10, and is passed by actuating device 20
It is directed at blade 30.
In concrete scheme, hydraulic motor 11 is driven by hydraulic pump 12, in scheme shown in Fig. 2, and three hydraulic motors 11
Driven by same hydraulic pump 12, to simplify the structure of hydraulic system 10.
The oil-in of hydraulic pump 12 connects with fuel tank 16, oil-out and system pressure oil communication.
Specifically, variable pump can preferentially be selected by hydraulic pump 12, so that liquid when hydraulic system 10 keeps blade 30 position constant
Pressure system 10 flow is minimum, and pressure is constant, to reduce power consumption.
Specifically, in order to the pressure making system pressure oil circuit is constant, can arrange and fuel tank 16 at the oil-out of hydraulic pump 12
First overflow valve 13 of connection, by the set pressure of the first overflow valve 13, the pressure of regulation hydraulic system 10, and makes it keep
Constant.
Also the second overflow valve 14 can be set between oil return circuit and fuel tank 16, by the first overflow valve 13 and second simultaneously
The coupling of overflow valve 14 is arranged, and makes hydraulic system 10 maintain constant pressure.
In concrete scheme, actuating device 20 includes the pitch variable bearings 23 being connected with blade 30 and is connected with pitch variable bearings 23
Driving member 22, wherein, driving member 22 is connected with the clutch end of two-way hydraulic motor 11.
Wherein, driving member 22 is connected by the clutch end of two-way deceleration with hydraulic motor 11, two-way decelerator 21
Arrange and can mate rotating speed, transmit torque.
Specifically, driving member 22 can be version or the version of gear of cog belt.Correspondingly, driving member 22
And the attachment structure between two-way decelerator 21 can adjust according to the concrete form of driving member 22.
Below with the work process of this blower fan hydraulic variable propeller system of concrete application note.
Assume wind speed be 10m/s be that unit completely sends out wind speed, when wind speed is 10m/s, blade 30 is in maximum wind area
Locating, unit is completely sent out, and correspondingly, the constant pressure of hydraulic system 10 makes hydraulic system 10 conduct the power to blade 30 and now leaf
The wind load that sheet 30 is subject to balances.
When wind speed is changed to 15m/s, more than completely sending out wind speed, the wind load that blade 30 is subject to more than when completely sending out, hydraulic system
10 conduct the power to blade 30 by two-way decelerator 21, driving member 22 and pitch variable bearings 23, and now blade 30 is forced through change
Oar bearing 23 conducts to driving member 22, and the outfan of driving member 22 can be driven to rotate, and hydraulic system 10 is by system pressure oil simultaneously
Road the first overflow valve 13 overflow, blade 30 becomes oar to the little direction of wind area, when blade 30 self adaptation is put away the oars certain angle,
After power that the wind load being subject to blade 30 is conducted with hydraulic system 10 to blade 30 is equal, hydraulic system 10 stops overflow, unit
Being still within full hair-like state, during this, hydraulic system 10 pressure keeps constant.
When wind speed is changed to 5m/s, the wind load that blade 30 is subject to is less than when completely sending out, and hydraulic system 10 is by two-way decelerator
21, driving member 22 and pitch variable bearings 23 conduct the power to blade 30, because the system pressure of now hydraulic system 10 is constant, by double
Driving two-way decelerator 21 to hydraulic motor 11, output moment of torsion draws the power of blade 30 more than driving member 22, thus blade 30 can be with
Change oar, during until blade 30 is in maximum wind area position, stop after limited parts are spacing.
As above, this blower fan hydraulic variable propeller system passes through hydraulic system 10 pressure and blade 30 equilibrium tendency by wind load, real
Existing blade 30 automatically adapts to wind regime and becomes oar in real time.
Additionally, reversal valve 15, this commutation also can be arranged between system pressure oil circuit and the oil return circuit of hydraulic system 10
Valve 15 connects with system pressure oil circuit or oil return circuit for two hydraulic fluid ports controlling hydraulic motor 11, the setting of this reversal valve 15
Can facilitate maintainer that unit is overhauled.
Shown in Fig. 2, when blower fan normally works, reversal valve 15 is maintained at left position, its first actuator port A and bidirectional hydraulic
The left oil port connection of motor 11, its second actuator port B connects with the right oil port of two-way hydraulic motor 11.
In concrete scheme, limiting component can be arranged on pitch variable bearings 23, naturally it is also possible to is arranged on other positions,
As long as the extreme position that blade 30 rotates can be limited to maximum wind area position, limiting component is specifically as follows limit
Position block.
In addition to above-mentioned blower fan hydraulic variable propeller system, the present invention also provides for a kind of blower fan hydraulic vane change method.
Refer to the flow chart that Fig. 4, Fig. 4 are blower fan a kind of detailed description of the invention of hydraulic vane change method provided by the present invention；
The method includes providing a constant hydraulic coupling to the blade of blower fan, and the size of this constant hydraulic coupling is that unit is completely sending out wind speed
Under, the wind load size that blade is subject to when maximum wind area position, say, that when unit is under completely sending out wind speed, and blade exists
Under the balanced action of wind load and constant hydraulic coupling, it is possible to be maintained at maximum wind area position；Blade is according to current wind load and perseverance
The equilibrium tendency determining hydraulic coupling becomes oar in real time, and wherein, the extreme position that blade rotates is maximum wind area position.
Specifically, the offer of constant hydraulic coupling can use aforementioned hydraulic system to provide；The extreme position that blade rotates can
Realize by arranging aforementioned limiting component.
Consistent with the principle of aforementioned blower fan hydraulic variable propeller system, the method also can reach same technique effect, the most not
Repeat again.
Above blower fan hydraulic variable propeller system provided by the present invention and method are all described in detail.Used herein
Principle and the embodiment of the present invention are set forth by specific case, and the explanation of above example is only intended to help to understand
The method of the present invention and core concept thereof.It should be pointed out that, for those skilled in the art, without departing from this
On the premise of inventive principle, it is also possible to the present invention is carried out some improvement and modification, these improve and modification also falls into the present invention
In scope of the claims.
Claims (10)
1. blower fan hydraulic variable propeller system, including each actuating device (20) of connection corresponding with each blade (30) of blower fan；Its feature
Be, also include the hydraulic system (10) being connected with each described actuating device (20) power, and with the number of described blade (30)
The limiting component that mesh is consistent；The pressure of described hydraulic system (10) is steady state value, so that described blade (30) is by current wind load
Realize becoming oar in real time with the equilibrium tendency of the pressure of described hydraulic system (10)；
Described steady state value be unit under completely sending out wind speed, the wind that described blade (30) is subject to when being maintained at maximum wind area position
Carry；It is described maximum wind area position that described limiting component can limit the extreme position that described blade (30) rotates.
Blower fan hydraulic variable propeller system the most according to claim 1, it is characterised in that described hydraulic system (10) includes and institute
State the two-way hydraulic motor (11) that actuating device (20) number is consistent, the clutch end of each described two-way hydraulic motor (11) with
Corresponding described actuating device (20) connects；Two hydraulic fluid ports of described two-way hydraulic motor (11) respectively with system pressure oil circuit and
Oil return circuit connects.
Blower fan hydraulic variable propeller system the most according to claim 2, it is characterised in that described hydraulic system (10) also includes driving
The hydraulic pump (12) that dynamic each described two-way hydraulic motor (11) works, the oil-out of described hydraulic pump (12) is also by the first overflow
Valve (13) connects with fuel tank (16).
Blower fan hydraulic variable propeller system the most according to claim 3, it is characterised in that described hydraulic system (10) also includes changing
To valve (15), described reversal valve (15) be used for controlling two hydraulic fluid ports of described two-way hydraulic motor (11) respectively with described system pressure
Power oil circuit or the connection of described oil return circuit.
Blower fan hydraulic variable propeller system the most according to claim 3, it is characterised in that described oil return circuit and described fuel tank
(16) the second overflow valve (14) it is additionally provided with between.
Blower fan hydraulic variable propeller system the most according to claim 3, it is characterised in that described hydraulic pump (12) is variable pump.
7. according to the blower fan hydraulic variable propeller system described in any one of claim 2-6, it is characterised in that described actuating device (20)
Including the pitch variable bearings (23) being connected with described blade (30) and the driving member (22) being connected with described pitch variable bearings (23), described
Driving member (22) is connected with the clutch end of described two-way hydraulic motor (11).
Blower fan hydraulic variable propeller system the most according to claim 7, it is characterised in that described driving member (22) is subtracted by two-way
Speed device (21) is connected with the clutch end of described two-way hydraulic motor (11).
Blower fan hydraulic variable propeller system the most according to claim 7, it is characterised in that described driving member (22) be cog belt or
Gear.
10. blower fan hydraulic vane change method, it is characterised in that described method includes: the blade of fan provides a constant hydraulic pressure
Power, the size of described constant hydraulic coupling be unit under completely sending out wind speed, described blade is subject to when maximum wind area position
Wind load size；Described blade becomes oar, wherein, described blade in real time according to the equilibrium tendency of current wind load Yu described constant hydraulic coupling
The extreme position rotated is described maximum wind area position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610772185.7A CN106121915B (en) | 2016-08-30 | 2016-08-30 | Blower hydraulic variable propeller system and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610772185.7A CN106121915B (en) | 2016-08-30 | 2016-08-30 | Blower hydraulic variable propeller system and method |
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| Publication Number | Publication Date |
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| CN106121915A true CN106121915A (en) | 2016-11-16 |
| CN106121915B CN106121915B (en) | 2019-05-03 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107989744A (en) * | 2017-12-29 | 2018-05-04 | 华润电力风能（阳江）有限公司 | A kind of variable pitch cylinder system |
| CN109185056A (en) * | 2018-10-30 | 2019-01-11 | 新疆金风科技股份有限公司 | Pitch drive, pitch drive system and wind power generating set |
| CN109441724A (en) * | 2018-12-26 | 2019-03-08 | 北京金风科创风电设备有限公司 | Safety throttling device and method for hydraulic pitch control system and hydraulic pitch control system |
| CN113027677A (en) * | 2019-12-25 | 2021-06-25 | 新疆金风科技股份有限公司 | Hydraulic variable pitch control method and device of wind generating set |
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| CN1752439A (en) * | 2005-10-31 | 2006-03-29 | 朱汪逸 | Hydraulic vane change device for wind-driven generator |
| CN102506010A (en) * | 2011-12-15 | 2012-06-20 | 三一电气有限责任公司 | Wind driven generator and variable-pitch system thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107989744A (en) * | 2017-12-29 | 2018-05-04 | 华润电力风能（阳江）有限公司 | A kind of variable pitch cylinder system |
| CN109185056A (en) * | 2018-10-30 | 2019-01-11 | 新疆金风科技股份有限公司 | Pitch drive, pitch drive system and wind power generating set |
| CN109441724A (en) * | 2018-12-26 | 2019-03-08 | 北京金风科创风电设备有限公司 | Safety throttling device and method for hydraulic pitch control system and hydraulic pitch control system |
| CN113027677A (en) * | 2019-12-25 | 2021-06-25 | 新疆金风科技股份有限公司 | Hydraulic variable pitch control method and device of wind generating set |
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| CN106121915B (en) | 2019-05-03 |
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