CN208416786U - The wind turbines rotor of automatic variable pitch and disability protection - Google Patents
The wind turbines rotor of automatic variable pitch and disability protection Download PDFInfo
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- CN208416786U CN208416786U CN201820607210.0U CN201820607210U CN208416786U CN 208416786 U CN208416786 U CN 208416786U CN 201820607210 U CN201820607210 U CN 201820607210U CN 208416786 U CN208416786 U CN 208416786U
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- variable pitch
- wheel hub
- main wing
- wind turbines
- front flap
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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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Abstract
The utility model discloses the wind turbines rotors of a kind of automatic variable pitch and disability protection.The automatic variable pitch and the wind turbines rotor of disability protection include hub unit, paddle device and vane change device.Hub unit includes inner wheel hub and outer wheel hub, and for being arranged in generator drive shaft, outer wheel hub is arranged on inner wheel hub inner wheel hub by spoke；Paddle device includes blade main wing and main wing rotation axis, and blade main wing is arranged on outer wheel hub by main wing rotation axis；Vane change device includes pitch gear, variable pitch rack gear, variable pitch chain, driving motor and drive sprocket, pitch gear is set in one heart in main wing rotation axis, variable pitch rack gear is engaged with pitch gear, driving motor is arranged on inner wheel hub, drive sprocket is arranged on driving motor, variable pitch chain one end is connect with variable pitch rack gear, and the variable pitch chain other end passes through spoke and connect with drive sprocket.This wind turbines rotor easily starts when wind speed is low, safe when wind speed is high, and transfer efficiency is preferable always.
Description
Technical field
The utility model relates to technical field of wind power generation, more particularly to the wind-force of a kind of automatic variable pitch and disability protection
Generator wind wheel.
Background technique
Wind power generating set for converting mechanical energy for the kinetic energy of wind, and is converted into electric energy in turn.
Conversion from kinetic energy to mechanical energy realizes that therefore, wind wheel is the main composition of wind-power electricity generation equipment by wind wheel
Component is the key factor for determining wind-driven generator power, wind energy conversion efficiency.
Currently, wind generating technology is gradually convergent in form in unit both at home and abroad.In, Large-scale machine set have selected three paddles substantially
Leaf, trunnion axis, upwind, tube type tower technology path.
The rotor solidity of three blade wind wheels is small, and (rotor solidity refers to that projected area of the blade on wind wheel Plane of rotation is total
With the ratio with wind wheel sweeping area), therefore windage is small；The tip speed ratio of three blade wind wheels is high, and (tip speed ratio refers to blade
The ratio of blade tip linear velocity and wind speed), therefore the revolving speed of wind wheel is high.In many influence factors of wind-power electricity generation, three blade wind
Wheel all has clear superiority on rotor solidity and tip speed ratio the two principal elements, therefore is widely applied.
Three blade wind wheels it is with the obvious advantage, but there is also limitations simultaneously.The low wind starting performance of three blade wind wheels needs to be changed
Kind, superpower wind safety is also to be improved.
Meanwhile three blade wind wheel blade it is long and thin, have higher requirement, also, three blade wind to material and technology
The relative diameter of wheel is big, and the manufacturing cost supervened, installation cost, operation expense are higher.Three blade wind wheels this
Kind of architectural characteristic will cause adverse effect to safety in operation, the ability for resisting adverse circumstances.
Utility model content
In view of this, the purpose of this utility model is to provide the wind-driven generator wind of a kind of automatic variable pitch and disability protection
Wheel, superpower wind security performance lower skill poor with the low wind starting performance for solving three blades wind wheel existing in the prior art
Art problem.
To achieve the goals above, the utility model uses following technical scheme:
The wind turbines rotor of a kind of automatic variable pitch provided by the utility model and disability protection, including hub unit,
Paddle device and vane change device；
The hub unit includes inner wheel hub and outer wheel hub, and the inner wheel hub is for being arranged in generator drive shaft, institute
Outer wheel hub is stated to be arranged on the inner wheel hub by spoke；
The paddle device includes blade main wing and main wing rotation axis, and the blade main wing is set by the main wing rotation axis
It sets on the outer wheel hub；
The vane change device includes pitch gear, variable pitch rack gear, variable pitch chain, driving motor and drive sprocket, the change
Paddle gear is set in one heart in the main wing rotation axis, and the variable pitch rack gear is engaged with the pitch gear, the driving motor
Be arranged on the inner wheel hub, the drive sprocket is arranged on the driving motor, one end of the variable pitch chain with it is described
The connection of variable pitch rack gear, the other end of the variable pitch chain pass through the spoke and connect with the drive sprocket.
Further, the paddle device further includes blade front flap；
The blade front flap and the blade main wing are rotatablely connected；
The bottom of the blade front flap is equipped with front flap and deflects guide rod；
The outer wheel hub, which is equipped with, deflects guide rail with the front flap of front flap deflection matching guide bars；
The end of the front flap deflection guide rod is located in front flap deflection guide rail, and the front flap deflects guide rod energy
It is enough to be slided in front flap deflection guide rail.
Further, the vane change device further includes variable pitch spring；
The variable pitch chain is connect by the variable pitch spring with the drive sprocket.
Further, the vane change device further includes drive chain；
The variable pitch spring is connect by the drive chain with the drive sprocket.
Further, the vane change device further includes variable pitch limit plate；
The variable pitch limit plate is fixed at main wing rotation axis bottom, and the variable pitch limit plate turns with the main wing
The rotation of moving axis and rotate.
Further, the vane change device further includes variable pitch synchronising (connecting) rod；
The variable pitch synchronising (connecting) rod is connected between the variable pitch rack gear on the adjacent paddle device.
Further, the vane change device further includes feathering spring；
One end of the feathering spring is connect with the variable pitch rack gear, and the other end of the feathering spring is connected to described outer
On the inner wall of wheel hub.
Further, the vane change device further includes damper；
One end of the damper is connect with the variable pitch rack gear, and the other end of the damper is connected to the outer wheel hub
Inner wall on.
It further, further include pitch control device；
The pitch control device includes electromagnetic brake, sensor probe, controller, full feathering state sensor and preset
State sensor；
The end of the driving motor is arranged in the electromagnetic brake；
The sensor probe is arranged on the inner wheel hub；
The controller is arranged on the inner wheel hub；
The full feathering state sensor is arranged on the drive sprocket；
The preset condition sensor is arranged on the drive sprocket.
It further, further include tower shadow effect attenuating device；
The tower shadow effect attenuating device includes guide ring and tail vane；
The guide ring is located at below the hub unit for being arranged in tower bar；
The side of the guide ring is arranged in the tail vane.
The wind turbines rotor of automatic variable pitch provided by the utility model and disability protection, driving motor drive drive chain
Wheel rotation, is acted by variable pitch chain-driving variable pitch rack gear, and then drives pitch gear rotation, and main wing rotation axis is with pitch gear
Rotation and rotate, drive blade main wing rotation, reach preset condition, the windward side of blade and the angle of wind direction can be according to wind
The size of speed and change, realize automatic variable pitch, easily start when wind speed is low, it is safe when wind speed is high, can be in different wind friction velocities
Under remain relatively preferable transfer efficiency, it is poor to solve the low wind starting performance of existing wind wheel, superpower wind security performance
Lower problem is adapted for promoting and applying.
Detailed description of the invention
It, below will be right in order to illustrate more clearly of specific embodiment of the present invention or technical solution in the prior art
Specific embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, it is described below
In attached drawing be that some embodiments of the utility model are not paying creativeness for those of ordinary skill in the art
Under the premise of labour, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the wind turbines rotor of a kind of automatic variable pitch that the utility model embodiment one provides and disability protection
Overall structure diagram；
Fig. 2 is the wind turbines rotor of a kind of automatic variable pitch that the utility model embodiment one provides and disability protection
Partial structural diagram；
Fig. 3 is the wind turbines rotor of a kind of automatic variable pitch that the utility model embodiment one provides and disability protection
Partial structural diagram；
Fig. 4 is the wind turbines rotor of a kind of automatic variable pitch that the utility model embodiment one provides and disability protection
Partial structural diagram.
Appended drawing reference:
100- hub unit；200- paddle device；300- vane change device；600- generator drive shaft；700- tower bar；
101- inner wheel hub；102- outer wheel hub；103- spoke；104- blade installation pedestal；105- installation base plate；
201- blade main wing；202- main wing rotation axis；203- blade front flap；204- front flap deflects guide rod；Before 205-
Wing flap deflects guide rail；
301- pitch gear；302- variable pitch rack gear；303- variable pitch chain；304- driving motor；305- drive sprocket；
306- variable pitch spring；307- drive chain；308- variable pitch limit plate；309- variable pitch synchronising (connecting) rod；310- feathering spring；311-
Damper；312- rack guide rail；313- motor mounting base；314- transition sprocket wheel；315- limits adjustment bolt；
401- electromagnetic brake；402- controller；
501- guide ring；502- tail vane.
Specific embodiment
The technical solution of the utility model is clearly and completely described below in conjunction with attached drawing, it is clear that described
Embodiment is the utility model a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, originally
Field those of ordinary skill every other embodiment obtained without making creative work belongs to practical
Novel protected range.
It is in the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", " perpendicular
Directly ", the orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, and is only
For ease of description the utility model and simplify description, rather than the device or element of indication or suggestion meaning must have it is specific
Orientation, be constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.In addition, term " the
One ", " second ", " third " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition
The concrete meaning of language in the present invention.
Embodiment one:
In the optinal plan of the present embodiment, as shown in Figures 1 to 4, a kind of automatic variable pitch provided in this embodiment and mistake
The wind turbines rotor that can be protected, including hub unit 100, paddle device 200 and vane change device 300；Hub unit 100 wraps
Inner wheel hub 101 and outer wheel hub 102 are included, for inner wheel hub 101 for being arranged in generator drive shaft 600, outer wheel hub 102 passes through spoke
Item 103 is arranged on inner wheel hub 101；Paddle device 200 includes blade main wing 201 and main wing rotation axis 202, blade main wing 201
It is arranged on outer wheel hub 102 by main wing rotation axis 202；Vane change device 300 includes pitch gear 301, variable pitch rack gear 302, becomes
Paddle chain 303, driving motor 304 and drive sprocket 305, pitch gear 301 are set in one heart in main wing rotation axis 202, variable pitch
Rack gear 302 is engaged with pitch gear 301, and driving motor 304 is arranged on inner wheel hub 101, and the setting of drive sprocket 305 is in driving electricity
On machine 304, one end of variable pitch chain 303 is connect with variable pitch rack gear 302, the other end of variable pitch chain 303 pass through spoke 103 with
Drive sprocket 305 connects.
In the present embodiment, driving motor 304 drives drive sprocket 305 to rotate, and drives variable pitch tooth by variable pitch chain 303
Item 302 acts, and then pitch gear 301 is driven to rotate, and main wing rotation axis 202 is rotated with the rotation of pitch gear 301, drives
Blade main wing 201 rotates, and completion working condition is preset, can change the windward side of paddle device 200 according to the size of wind speed
It with the angle of wind direction, realizes automatic variable pitch, easily starts when wind speed is low, improve the safe running performance of wind wheel under high wind conditions,
It is safe when wind speed is high, relatively preferable transfer efficiency can be remained under different wind friction velocities.
In the present embodiment, inner wheel hub 101 is fixedly connected with generator coupling, is rotated with driven generator；Meanwhile spoke
Item 103 is hollow structure.
In the present embodiment, blade main wing 201 is set in main wing rotation axis 202, with the rotation of main wing rotation axis 202
Rotation；The axial direction of main wing rotation axis 202 is radial parallel with outer wheel hub 102.
In the present embodiment, blade main wing 201 is arranged on outer wheel hub 102, improves rotor solidity；Because of paddle device
200 quantity is more, if paddle device 200 is directly connect with inner wheel hub 101, not only setting is difficult, and inner wheel hub 101 weeks
The relatively large area in side will be blocked by paddle device 200, increase rotor solidity, meanwhile, close to the paddle of inner wheel hub 101
200 work done of leaf device is limited, but the windage generated is obvious.
In the present embodiment, paddle device 200 is arranged on outer wheel hub 102, outer wheel hub 102 and inner wheel hub 101 are by few
The spoke 103 of amount connects, and the cross-sectional shape of spoke 103 is using the resistance design of streamlined drop；It is not only convenient for more paddle devices 200
Layout, while rotor solidity is improved, reduce windage.
Meanwhile paddle device 200 being arranged on outer wheel hub 102, the arm of force is relatively long, therefore 200 work done of paddle device
When have preferable torque characteristics.
Also, paddle device is more, is arranged far from the outer wheel hub 102 of center of rotation, and the arm of force is longer, improves torque
Characteristic optimizes low wind speed starting performance, improves wind energy utilization efficiency.
It should be noted that the windward side of existing blade, long much larger than width, near threadiness, and in the present embodiment
The windward side of blade main wing 201 is length and rectangle similar in width, and has reasonable torsional angle, significantly reduces paddle device
Difficulty in 200 manufactures and installation, improves the resist ability to high wind, creates condition for unit safety operation.
In the present embodiment, variable pitch rack gear 302 is arranged on the inner wall of outer wheel hub 102 by rack guide rail 312, variable pitch
Rack gear 302 can slide in rack guide rail 312.
Meanwhile driving motor 304 is fixedly connected on inner wheel hub 101 by motor mounting base 313, drive chain 307
It is wound around on drive sprocket 305；Specifically, the axis of driving motor 304 is overlapped with the axis of inner wheel hub 101.
In this embodiment, it is preferred that the quantity of paddle device 200 is 18；It is appreciated that the number of paddle device 200
Amount can according to wind power generating set overall technology design requirement and be increased and decreased.
In the optinal plan of the present embodiment, paddle device 200 further includes blade front flap 203；Blade front flap 203 with
Blade main wing 201 is rotatablely connected；The bottom of blade front flap 203 is equipped with front flap and deflects guide rod 204；Outer wheel hub 102 is equipped with
Guide rail 205 is deflected with the front flap deflection matched front flap of guide rod 204；The end of front flap deflection guide rod 204 is located at front flap
It deflects in guide rail 205, front flap deflection guide rod 204 can deflect in guide rail 205 in front flap to be slided.
In the present embodiment, it when main wing rotation axis 202 rotates, is led in front flap deflection guide rod 204 and front flap deflection
Under the action of rail 205, blade front flap 203 and blade main wing 201 are relatively rotated, and the global shape of the two changes.
Also, one end of front flap deflection guide rod 204 is fixedly connected in blade front flap 203, and front flap deflects guide rod
204 other end matching is in front flap deflection guide rail 205.
In the present embodiment, 200 main body of paddle device includes blade main wing 201 and blade front flap 203, that is, seperated
Formula structure improves wind energy conversion effect so that paddle device 200 is still able to maintain preferable aerodynamic characteristics in pitch process
Rate.
In the present embodiment, blade front flap 203 and blade main wing 201 are rotatablely connected, and pivot center is located at main wing rotation
The side of axis 202；The bottom of blade front flap 203 is equipped with front flap far from one end of pivot center and deflects guide rod 204, outer wheel hub
Deflection guide rail is equipped with front flap deflection 204 corresponding position of guide rod on 102.
It should be noted that the axis of the axis of main wing rotation axis 202, pivot center, front flap deflection guide rod 204, when
When three is located in a plane, the distance with the axis of the axis of main wing rotation axis 202 to front flap deflection guide rod 204 is half
Diameter and make deflection guide rail when, the deflection guide rail be standard radian deflection guide rail, at this point, if main wing rotation axis 202 drive paddle
Leaf main wing 201 rotates, and blade front flap 203 rotates with it, and the relative position of blade front flap 203 and blade main wing 201 is not
It changes, i.e. the shape of the main structure of paddle device 200 does not change.
In the present embodiment, by making the deflection guide rail of non-standard radian, the main structure of paddle device 200 is realized
Deformation；Specifically, the horizontal distance at any point on center line of guide rail to 202 axis of main wing rotation axis is deflected, respectively less than,
When the axis that axis, rotation axis axis, the front flap of main wing rotation axis 202 deflect guide rod 204 is located in a plane, main wing turns
The axis of moving axis 202 to the distance between the axis of front flap deflection guide rod 204, the i.e. shape of deflection guide rail is similar to involute；
At this point, front flap deflects deflection of the guide rod 204 by non-standard radian if main wing rotation axis 202 drives blade main wing 201 to rotate
The limitation of guide rail, blade front flap 203 and the relative position of blade main wing 201 just change, i.e. the master of paddle device 200
Deformation occurs for body structure；This deformation reduces adverse effect of the pitch process to the aerodynamic characteristics of paddle device 200；This
The amplitude of kind deformation depends between the axis three of axis, pivot center, front flap deflection guide rod 204 of main wing rotation axis 202
Relative distance.
The body shape of paddle device 200 is variable, is split type variable geometry type, and in the stroke of variable pitch, aerofoil profile accordingly occurs
The variation of certain amplitude, so that the aerodynamic characteristics of blade is minimized in the adverse effect of variable pitch total travel.
In the optinal plan of the present embodiment, vane change device 300 further includes variable pitch spring 306；Variable pitch chain 303 passes through change
Paddle spring 306 is connect with drive sprocket 305.
In the present embodiment, the setting of variable pitch spring 306 enables paddle device 200 to change automatically according to wind speed size
Feather；It is many to influence the factor that variable pitch spring 306 designs, the rigidity of variable pitch spring 306 may be designed as linear, i.e., spring is complete
The spring of effective section is equal away from, diameter；The rigidity of variable pitch spring 306 can also be designed as nonlinear according to actual needs；Variable pitch
The effect structure of spring 306 is rationally to adjust variable pitch amplitude under different wind friction velocities, improves wind energy conversion efficiency.
In the optinal plan of the present embodiment, vane change device 300 further includes drive chain 307；Variable pitch spring 306 passes through drive
Dynamic chain 307 is connect with drive sprocket 305.
In the present embodiment, one end of variable pitch chain 303 is connect with variable pitch rack gear 302, the other end of variable pitch chain 303,
Around the transition sprocket wheel 314 being set on outer 102 inner wall of wheel hub, and spoke 103 is passed through, is connect with one end of variable pitch spring 306,
The other end of variable pitch spring 306 is connect with drive chain 307, and drive chain 307 matches on drive sprocket 305.
In the optinal plan of the present embodiment, vane change device 300 further includes variable pitch limit plate 308；Variable pitch limit plate 308 is solid
Fixed to be arranged in 202 bottom of main wing rotation axis, variable pitch limit plate 308 is rotated with the rotation of main wing rotation axis 202.
In the present embodiment, blade installation pedestal 104 is equipped with inside outer wheel hub 102, main wing rotation axis 202 is rotatably arranged on
In blade installation pedestal 104.
In the present embodiment, when variable pitch limit plate 308 touches blade installation pedestal 104, main wing rotation axis 202 stops
Rotation；The relative positional relationship for passing through variable pitch limit plate 308 and blade installation pedestal 104 limits turning for paddle device 200
Dynamic range, i.e. the variable pitch amplitude of paddle device 200.
Also, the both ends of variable pitch limit plate 308 are additionally provided with limit adjustment bolt 315, can by limit adjustment bolt 315
Adjust the limit range that paddle device 200 rotates；Depending on the range is required according to the overall technology of wind power generating set, for example,
If it is desired to improve the low wind speed starting performance of wind wheel, then slewing area is adjusted to bigger than normal.
In the optinal plan of the present embodiment, vane change device 300 further includes variable pitch synchronising (connecting) rod 309；Variable pitch synchronising (connecting) rod
309 are connected between the variable pitch rack gear 302 on adjacent paddle device 200.
In the present embodiment, variable pitch synchronising (connecting) rod 309 by the variable pitch rack gear 302 on multiple paddle devices 200 successively head and the tail
It is connected, realizes that all paddle devices 200 are kept strokes.
Meanwhile the length of variable pitch synchronising (connecting) rod 309 is adjustable, the deflection angle to realize all paddle devices 200 is consistent.
It is appreciated that 18 paddle devices 200 are connected to become the entirety of a linkage by 18 variable pitch synchronising (connecting) rods 309.
In the optinal plan of the present embodiment, vane change device 300 further includes feathering spring 310；One end of feathering spring 310
It is connect with variable pitch rack gear 302, the other end of feathering spring 310 is connected on the inner wall of outer wheel hub 102.
In the present embodiment, the other end of feathering spring 310 is and installation base plate 105 being fixed in outer wheel hub 102
It is connected on outer wheel hub 102.
In the present embodiment, when driving motor 304 does not work, the tightening of feathering spring, the limit of 308 one end of variable pitch limit plate
Position adjustment bolt 315 offsets with blade installation pedestal 104, and paddle device 200 stabilization is in full feathering state, i.e. paddle device 200
Windward side is parallel with wind direction.
It should be noted that feathering spring and variable pitch spring 306, the action direction of the power of the two are opposite；Feathering spring is led
Draw variable pitch rack gear 302 to move to a direction, driving blade is rotated to feathering direction, makes windward side and the wind of paddle device 200
To angle adjustment tend to zero；Variable pitch spring 306 then draws variable pitch rack gear 302 and moves to other direction, makes paddle device 200
The angle of windward side and wind direction is deviated to maximum direction.
Also, the rigidity of variable pitch spring 306 is greater than the rigidity of feathering spring, that is, by the windward side of paddle device 200 and wind
To maximum angle direction of the angle from feathering shutdown status to working condition adjust when, the rigidity of variable pitch spring 306 is enough gram
Resistance caused by feathering spring is taken, is adjusted so as to realize to the maximum angle direction of working condition.
Preferably, the quantity of feathering spring 310 is 3；Accordingly, the quantity of variable pitch chain 303 and variable pitch spring 306
It is 3.
In the optinal plan of the present embodiment, vane change device 300 further includes damper 311；One end of damper 311 and change
Paddle rack gear 302 connects, and the other end of damper 311 is connected on the inner wall of outer wheel hub 102.
In the present embodiment, two be respectively cooperating with the pitch gear 301 in two adjacent main wing rotation axis 202
Variable pitch rack gear 302, one end of feathering spring 310 are connect with one of variable pitch rack gear 302, one end of damper 311 with wherein
The connection of another variable pitch rack gear 302, the other end of feathering spring 310 and the other end of damper 311 are and positioned at two masters
Installation base plate 105 between wing rotation axis 202 connects.
In the present embodiment, damper 311 is unidirectional constrained damping, and when contraction is without hindrance, and when stretching, extension is damped, when
When paddle device 200 encounters mutation high wind, it will be deflected rapidly to feathering direction, damper 311 does not play damping action at this time；When
When high wind suddenly disappears, paddle device 200 will return to position appropriate, and it is stagnant wait guarantee wind to play damping for damper 311 at this time
Wheel operates steady.
It further include pitch control device in the optinal plan of the present embodiment；Pitch control device includes electromagnetic brake
401, sensor probe, controller 402, full feathering state sensor and preset condition sensor；The setting of electromagnetic brake 401 is being driven
The end of dynamic motor 304；Sensor probe is arranged on inner wheel hub 101；Controller 402 is arranged on inner wheel hub 101；Feathering shape
State sensor is arranged on drive sprocket 305；Preset condition sensor is arranged on drive sprocket 305.
In the present embodiment, drive sprocket 305 is connected to one end of driving motor 304, and electromagnetic brake 401 is connected to drive
The other end of dynamic motor 304.
Specifically, sensor probe is arranged on motor mounting base 313.
It should be noted that wind power generating set must be run under controlled conditions, its control mechanism, driving mechanism
Working power by externally supplying, if power supply breaks down, unit must be out of service；In the present embodiment, pitch process
It is to be realized under the support of vane change device 300 and control device, i.e., after dbjective state is realized in control, electromagnetic brake 401 is just
Dbjective state can be subjected to locking, if losing power supply, electromagnetic brake 401 will automatic unlocking, drive sprocket 305 and driving
Motor 304 is free to rotate, and drive sprocket 305 is converted to shutdown status by work preset condition, and feathering spring retracts, blade dress
Full feathering state can be fast implemented under the traction of feathering spring by setting 200, so that wind wheel stops operating, generating set is shut down, really
The safety of generating set is protected.
When shutdown status, sensor probe is corresponding with full feathering state sensor.
After vane change device 300 is powered, according to the instruction of controller 402, driving motor 304 drives 305 turns of drive sprocket
It is dynamic, when the pulling force that drive sprocket 305 assigns variable pitch spring 306 is enough to overcome resistance caused by feathering spring, variable pitch rack gear
302 just gradually deviate, and paddle device 200 gradually deflects therewith, until relevant limit adjustment bolt on variable pitch limit plate 308
315 offset with blade installation pedestal 104；After limit adjustment bolt 315 and blade installation pedestal 104 offset, drive sprocket 305
It rotates a certain angle again, reaches the preset condition of setting；At this point, the position of full feathering state sensor and preset condition sensor
Corresponding, controller 402 controls driving motor 304 and stops operating, and electromagnetic brake 401 is locked state at this time, from
And it completes to start preset work.
It further include tower shadow effect attenuating device in the optinal plan of the present embodiment；Tower shadow effect attenuating device includes leading
Flow ring 501 and tail vane 502；Guide ring 501 is arranged in tower bar 700, and is located at 100 lower section of hub unit；The setting of tail vane 502 exists
The side of guide ring 501.
In the present embodiment, when any paddle device 200, which is turned to, to be overlapped on wind direction with tower bar 700, due to air-flow
It is blocked by tower bar 700, wind wheel will be caused to vibrate, tower shadow effect attenuating device improves this phenomenon.
To sum up, the specific work process of this wind turbines rotor is as follows:
When driving motor 304 does not start, feathering spring tightening, paddle device 200 is in full feathering state；
When driving motor 304 starts, it is preset to carry out working condition, by drive chain 307 by drive sprocket 305
Rotary motion becomes moving along a straight line, then power is transferred to variable pitch rack gear 302 by variable pitch spring 306, variable pitch chain 303, drives
Dynamic pitch gear 301 rotates, and then main wing rotation axis 202 rotates, and blade just rotates with it；When 308 other end of variable pitch limit plate
Limit adjustment bolt 315 and blade installation pedestal 104 when offseting, driving motor 304 stops working, at this time paddle device 200
Windward side and the angle of wind direction be in maximum rating.
It should be noted that when driving motor 304 stops working, for windward side and the wind direction for guaranteeing paddle device 200
Angle can have certain stability range when being in maximum value, need to set a preset pulling force, which should be slightly bigger than
Generated resistance when feathering spring is stretched, specific movement displaying is when the limit of 308 other end of variable pitch limit plate adjusts spiral shell
When bolt 315 and blade installation pedestal 104 offset, driving motor 304 drives drive sprocket 305 to rotate a certain angle again；For
The above preset adjustment, need to carry out under calm or low wind conditions.
After the completion of working condition is preset, when wind speed is lower, since the windward side of paddle device 200 and the angle of wind direction are pre-
It is placed in maximum rating, the wind area of paddle device 200 is larger, and wind wheel just can smoothly start；If wind speed is gradually increased, wind wheel
Rotation speed then correspondingly increase.
When wind speed improves to a certain degree, existing wind wheel by characteristics such as tip speed ratios due to being influenced, wind wheel rotation
Speed is no longer significantly improved, and the windage of blade can significantly increase, and causes to the integrally-built bearing capacity of generating set
Very big burden.
The wind turbines rotor of the present embodiment, when wind speed improve to a certain degree, act on 200 windward side of paddle device
When generated windage summation is slightly larger than 306 pulling force summation of variable pitch spring, paddle device 200 will deflect, i.e., blade fills
Setting 200 windward side and the angle of wind direction will become smaller, so that the windward side of paddle device 200 becomes smaller, is produced from blade windward side
Raw windage can also become smaller, therefore reduce adverse effect of the high wind to set structure；When wind speed is stablized in range to a certain degree
Interior, when the windage summation of above-mentioned paddle device 200 and the pulling force summation of variable pitch spring 306 balance, paddle device 200 just stops
Only deflect；Further, when wind speed exceeds generating set operational envelope, paddle device 200 can be deflected close to full feathering state,
It ensure that set structure safety；Conversely, when wind speed is gradually reduced, the angle of the windward side of paddle device 200 and wind direction can be by
Gradual change is big, to improve the utilization efficiency of wind energy.
It should be noted that main wing rotation axis 202 rotates synchronously when paddle device 200 deflects under the action of high wind speed,
The pitch gear 301 being fixedly connected with main wing rotation axis 202 drives variable pitch rack gear 302 to deviate, this offset is via variable pitch chain
303, variable pitch spring 306, the transmission of drive chain 307 to drive sprocket 305, at this point, be fixedly and coaxially connected with drive sprocket 305
Driving motor 304 is by 401 locking of electromagnetic brake, by variable pitch rack gear 302 into all elements concatenated between drive sprocket 305,
Only the length of variable pitch spring 306 can change, i.e., variable pitch spring 306 is elongated at this time；Similarly, when wind speed reduces, pulling force
It is not enough to overcome the rigidity of variable pitch spring 306, variable pitch spring 306 is shunk, and paddle device 200 and wind direction angle are in reasonable shape
State.
Embodiment two:
In the optinal plan of the present embodiment, it is different from embodiment one, paddle device 200 uses integral type aerofoil profile；One
Formula aerofoil profile manufacturing process is simple, reliable for operation.
Embodiment three:
In the optinal plan of the present embodiment, it is different from embodiment one or embodiment two, drive chain 307 is directly and variable pitch
Chain 303 connects, and is not provided with variable pitch spring 306；Variable pitch is realized by control driving motor 304.
Finally, it should be noted that the above various embodiments is only to illustrate the technical solution of the utility model, rather than it is limited
System；Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should
Understand: it is still possible to modify the technical solutions described in the foregoing embodiments, or to some or all of
Technical characteristic is equivalently replaced；And these are modified or replaceed, it does not separate the essence of the corresponding technical solution, and this is practical new
The range of each embodiment technical solution of type.
Claims (10)
1. the wind turbines rotor of a kind of automatic variable pitch and disability protection, which is characterized in that including hub unit, paddle device
And vane change device；
The hub unit includes inner wheel hub and outer wheel hub, and the inner wheel hub is described outer for being arranged in generator drive shaft
Wheel hub is arranged on the inner wheel hub by spoke；
The paddle device includes blade main wing and main wing rotation axis, and the blade main wing is arranged by the main wing rotation axis
On the outer wheel hub；
The vane change device includes pitch gear, variable pitch rack gear, variable pitch chain, driving motor and drive sprocket, the variable pitch tooth
Wheel is set in one heart in the main wing rotation axis, and the variable pitch rack gear is engaged with the pitch gear, the driving motor setting
On the inner wheel hub, the drive sprocket is arranged on the driving motor, one end of the variable pitch chain and the variable pitch
Rack gear connection, the other end of the variable pitch chain pass through the spoke and connect with the drive sprocket.
2. the wind turbines rotor of automatic variable pitch according to claim 1 and disability protection, which is characterized in that the paddle
Leaf device further includes blade front flap；
The blade front flap and the blade main wing are rotatablely connected；
The bottom of the blade front flap is equipped with front flap and deflects guide rod；
The outer wheel hub, which is equipped with, deflects guide rail with the front flap of front flap deflection matching guide bars；
The end of front flap deflection guide rod is located in front flap deflection guide rail, and the front flap deflects guide rod can be
Sliding in the front flap deflection guide rail.
3. the wind turbines rotor of automatic variable pitch according to claim 1 and disability protection, which is characterized in that the change
Paddle device further includes variable pitch spring；
The variable pitch chain is connect by the variable pitch spring with the drive sprocket.
4. the wind turbines rotor of automatic variable pitch according to claim 3 and disability protection, which is characterized in that the change
Paddle device further includes drive chain；
The variable pitch spring is connect by the drive chain with the drive sprocket.
5. the wind turbines rotor of automatic variable pitch according to claim 1 and disability protection, which is characterized in that the change
Paddle device further includes variable pitch limit plate；
The variable pitch limit plate is fixed at main wing rotation axis bottom, and the variable pitch limit plate is with the main wing rotation axis
Rotation and rotate.
6. the wind turbines rotor of automatic variable pitch according to claim 1 and disability protection, which is characterized in that the change
Paddle device further includes variable pitch synchronising (connecting) rod；
The variable pitch synchronising (connecting) rod is connected between the variable pitch rack gear on the adjacent paddle device.
7. the wind turbines rotor of automatic variable pitch according to claim 1 and disability protection, which is characterized in that the change
Paddle device further includes feathering spring；
One end of the feathering spring is connect with the variable pitch rack gear, and the other end of the feathering spring is connected to the outer wheel hub
Inner wall on.
8. the wind turbines rotor of automatic variable pitch according to claim 1 and disability protection, which is characterized in that the change
Paddle device further includes damper；
One end of the damper is connect with the variable pitch rack gear, and the other end of the damper is connected to the interior of the outer wheel hub
On wall.
9. the wind turbines rotor of automatic variable pitch according to claim 1 and disability protection, which is characterized in that further include
Pitch control device；
The pitch control device includes electromagnetic brake, sensor probe, controller, full feathering state sensor and preset condition
Sensor；
The end of the driving motor is arranged in the electromagnetic brake；
The sensor probe is arranged on the inner wheel hub；
The controller is arranged on the inner wheel hub；
The full feathering state sensor is arranged on the drive sprocket；
The preset condition sensor is arranged on the drive sprocket.
10. the wind turbines rotor of automatic variable pitch according to claim 1 and disability protection, which is characterized in that also wrap
Include tower shadow effect attenuating device；
The tower shadow effect attenuating device includes guide ring and tail vane；
The guide ring is located at below the hub unit for being arranged in tower bar；
The side of the guide ring is arranged in the tail vane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820607210.0U CN208416786U (en) | 2018-04-26 | 2018-04-26 | The wind turbines rotor of automatic variable pitch and disability protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820607210.0U CN208416786U (en) | 2018-04-26 | 2018-04-26 | The wind turbines rotor of automatic variable pitch and disability protection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208416786U true CN208416786U (en) | 2019-01-22 |
Family
ID=65117440
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820607210.0U Expired - Fee Related CN208416786U (en) | 2018-04-26 | 2018-04-26 | The wind turbines rotor of automatic variable pitch and disability protection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208416786U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110030147A (en) * | 2019-04-17 | 2019-07-19 | 戚永维 | A kind of wind-driven generator shaft pitch full leaf point impeller |
| CN110285018A (en) * | 2019-07-10 | 2019-09-27 | 广东工业大学 | A kind of wind-driven generator and its vane change device |
-
2018
- 2018-04-26 CN CN201820607210.0U patent/CN208416786U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110030147A (en) * | 2019-04-17 | 2019-07-19 | 戚永维 | A kind of wind-driven generator shaft pitch full leaf point impeller |
| WO2020211667A1 (en) * | 2019-04-17 | 2020-10-22 | 戚永维 | Wind turbine double-shaft variable-pitch full-tip impeller |
| CN110030147B (en) * | 2019-04-17 | 2024-06-04 | 戚永维 | Double-shaft variable-pitch full-blade-tip impeller of wind driven generator |
| CN110285018A (en) * | 2019-07-10 | 2019-09-27 | 广东工业大学 | A kind of wind-driven generator and its vane change device |
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Granted publication date: 20190122 |