CN207111314U - Biswitch detection means and pitch-controlled system - Google Patents
Biswitch detection means and pitch-controlled system Download PDFInfo
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- CN207111314U CN207111314U CN201721059593.4U CN201721059593U CN207111314U CN 207111314 U CN207111314 U CN 207111314U CN 201721059593 U CN201721059593 U CN 201721059593U CN 207111314 U CN207111314 U CN 207111314U
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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
It the utility model is related to a kind of biswitch detection means and pitch-controlled system, biswitch detection means includes one or more switch module, switch module includes switch carrier, proximity switch and limit switch, proximity switch is fixedly connected on the same surface of switch carrier with limit switch, the extended line of proximity switch and limit switch is set in predetermined angular, positive stop is used for trigger switch component, driving part is used cooperatively with switch carrier, rotated for driving switch bearing, so that limit switch can be limited block triggering.The biswitch detection means and pitch-controlled system that the utility model embodiment provides, whether the physical location that can be used in judging the blade of wind power generating set reaches expected position, with judge pitch-controlled system whether necessary being failure, and can reduce wind power generating set generated energy loss.
Description
Technical field
Technical field of wind power generation is the utility model is related to, more particularly to a kind of biswitch detection means and becomes oar system
System.
Background technology
In wind power generating set, pitch-controlled system plays the critical function for realizing maximal power tracing and aerodynamic brake, its
Reliability is directly connected to the safety of wind power generating set.Whether pitch-controlled system can be reached by judging the physical location of blade
Desired location and then to judge that wind power generating set whether there is failure, to ensure that the safe handling of blade and the stable of unit are transported
OK.
The conventional method for judging leaf position of the pitch-controlled system of wind power generating set is set in pitch-controlled system at present
One positive stop and two proximity switches, a proximity switch are located at feathering and shut down angle position, another proximity switch position
In generating angle position.By taking the proximity switch for the angle position that wherein generates electricity as an example, when the angle that the encoder of pitch-controlled system is surveyed
When value is near generating angle position, the proximity switch positioned at generating angle position is triggered, and illustrates no failure, wind-power electricity generation
Unit normal operation.And when the angle value that the encoder of pitch-controlled system is surveyed is near generating angle position, and positioned at generating
The proximity switch of angle position is not triggered, then it is assumed that faulty, wind-driven generator feathering is shut down.Using aforesaid way one
Determine to can interpolate that whether the physical location of blade reaches desired location in degree, while can interpolate that whether pitch-controlled system occurs event
Barrier, ensure the safe handling of blade, but there is also certain deficiency, be mainly：
1st, the detecting distance of proximity switch is general shorter, when loosened due to positive stop, proximity switch is loosened etc., and reason is led
When causing positive stop not in the detection range of proximity switch, proximity switch can not trigger；
2nd, proximity switch failure itself or proximity switch line fault cause proximity switch not trigger.
In these cases, the proximity switch of encoder institute measuring angle correspondence position can not be triggered, and wind-driven generator is just
Failure can be triggered and feathering is shut down, and it is pitch-controlled system necessary being failure that this, which is not, and be due to that proximity switch appearance is above-mentioned
Wind power generating set feathering is shut down caused by reason can not trigger, and the maintenance workload of worker is not only increased, simultaneously as suitable
During oar is shut down, wind power generating set can not generate electricity, and cause the loss of generated energy.
Therefore, a kind of new biswitch detection means and pitch-controlled system are needed badly.
Utility model content
The utility model embodiment provides a kind of biswitch detection means and pitch-controlled system, can be used in judging wind-power electricity generation
Whether the physical location of the blade of unit reaches expected position, with judge pitch-controlled system whether necessary being failure, meanwhile, energy
Enough avoid wind power generating set because of non-pitch-controlled system failure and the generation of feathering shutdown situation, reduce the generating of wind power generating set
Amount loss.
On the one hand, a kind of biswitch detection means is proposed according to the utility model embodiment, for wind power generating set
Pitch-controlled system, pitch-controlled system includes pitch variable bearings, and pitch variable bearings include retainer plate and can be relatively fixed the rotation that circle rotates
Circle, biswitch detection means include one or more switch module, and switch module includes switch carrier, proximity switch and limit
Bit switch, proximity switch are fixedly connected on the same surface of switch carrier, and the interval point on switch carrier with limit switch
The extended line of cloth, proximity switch and limit switch is set in predetermined angular, and switch carrier can be arranged at the fixation of pitch variable bearings
Circle；Positive stop, the turning collar of pitch variable bearings can be arranged at and rotated in company with turning collar, for trigger switch component；Driving
Part, it is used cooperatively with switch carrier, is rotated for driving switch bearing, so that limit switch can be limited block triggering.
According to the one side of the utility model embodiment, predetermined angular is 45 degree~180 degree.
According to the one side of the utility model embodiment, switch carrier has dentation, and driving part is to be arranged at
And can be with the toothed member of dentation engaged transmission on positive stop.
According to the one side of the utility model embodiment, switch carrier is gear, and driving part is rack.
According to the one side of the utility model embodiment, the number of teeth of rack is no less than N, and N meets formula (1)
Wherein, predetermined angulars of a between proximity switch and limit switch extended line, n are the number of teeth of gear.
According to the one side of the utility model embodiment, positive stop is the block with predetermined length, width and thickness
Shape structure, length direction of the driving part along positive stop are set, and the length of driving part is less than the length of positive stop, driving
Part is located at the middle part of positive stop length direction or close to the position at middle part.
According to the one side of the utility model embodiment, positive stop has two relative ends in its width
Portion, driving part are located at one of end of positive stop width or close to the position of end, switch carrier and drivings
Part is correspondingly arranged, and proximity switch and limit switch are located at switch carrier towards another end of positive stop width
Surface and without departing from the coverage of positive stop width.
According to the one side of the utility model embodiment, switch carrier is disk-like structure, and driving part is motor, motor
Output shaft be connected with switch carrier.
According to the one side of the utility model embodiment, limit switch is Swing-Rod limit switch, the pendulum of limit switch
Bar extends to the side away from switch carrier, and the length of swing rod is greater than the length of proximity switch, in swing rod away from switch carrier
One end be provided with swing rod be hinged roller.
The biswitch detection means provided according to the utility model embodiment, for the pitch-controlled system of wind power generating set,
Can be arranged on the pitch variable bearings of pitch-controlled system, it include being arranged on pitch variable bearings retainer plate one or two with
Upper switch component, the positive stop and driving part that can be arranged on pitch variable bearings turning collar, switch module include switch branch
The extended line of seat, proximity switch and limit switch on switch carrier, proximity switch and limit switch is set in predetermined angular
Put, positive stop can be rotated with turning collar, and driving part is used cooperatively with switch carrier, be revolved for driving switch bearing
Turn.When in use, proximity switch can pass through driving part driving switch branch to closing detecting apparatus in the case where not being triggered
Seat rotates, to enable limit switch to be limited block triggering, and then the reality of the blade for judging wind power generating set
Whether position reaches expected position, with judge pitch-controlled system whether necessary being failure, meanwhile, effectively avoid wind-power electricity generation
Unit generation of feathering shutdown situation because of non-pitch-controlled system failure, reduce the generated energy loss of wind power generating set.
On the other hand, a kind of pitch-controlled system is provided according to the utility model embodiment, for wind power generating set, bag
Include：Pitch motor；Pitch variable bearings, including turning collar and retainer plate, retainer plate can be connected to the wheel hub of wind power generating set, turn
Moving-coil can be used in connecting the blade of wind power generating set；The output axis connection of transmission mechanism, input and pitch motor, output
End is connected with turning collar, to drive turning collar to rotate；Encoder, it can be used in detecting the angle of blade；Biswitch described above
Detection means, the switch module of biswitch detection means are arranged on retainer plate, and the positive stop of biswitch detection means is set
In can rotate on turning collar and in company with turning collar, for trigger switch component, to feed back the angle of blade；Pitch control device,
It is electrically connected with pitch motor, encoder and switch module, for receiving the electric signal of encoder and switch module and controlling change
The start and stop of oar motor.
According to the other side of the utility model embodiment, the quantity of switch module is two, two switch modules point
Not being arranged at can detect whether blade is in the position of generating angle and the position of angle whether is shut down in feathering on retainer plate
Put.
According to the other side of the utility model embodiment, the scope that feathering shuts down angle is 85 degree~90 degree, is generated electricity
The scope of angle is 0 degree~5 degree.
Brief description of the drawings
The feature of the utility model exemplary embodiment, advantage and technique effect described below with reference to the accompanying drawings.
Fig. 1 is the main structure diagram of the biswitch detection means of the utility model one embodiment；
Fig. 2 is the fundamental diagram of the biswitch detection means of the utility model one embodiment in one of the states；
Fig. 3 is the fundamental diagram of the biswitch detection means of the utility model one embodiment in another state；
Fig. 4 is the side structure schematic view of the biswitch detection means of the utility model one embodiment；
Fig. 5 is the main structure diagram of the biswitch detection means of the utility model another embodiment；
Fig. 6 is the structural representation of the pitch-controlled system of the utility model one embodiment.
Wherein：
10- biswitch detection means；
11- switch modules；111- switch carriers；112- proximity switches；113- limit switches；113a- swing rods；113b- is rolled
Wheel；12- positive stops；13- driving parts；
20- reductors；
30- pitch variable bearings；31- turning collars；32- retainer plates；
41- drives；42- tensioning wheels；43- cog belts；44- tensioning wheel fixing devices；45- cog belt fixed blocks；
50- wheel hubs.
Embodiment
The feature and exemplary embodiment of various aspects of the present utility model is described more fully below.Retouched in detail in following
In stating, it is proposed that many details, to provide to comprehensive understanding of the present utility model.But for people in the art
It will be apparent that the utility model can be implemented in the case of some details in not needing these details for member.
Description to embodiment below is used for the purpose of providing to of the present utility model more preferable by showing example of the present utility model
Understanding.In the the accompanying drawings and the following description, at least part of known features and technology are not illustrated, to avoid to this reality
Unnecessary obscure is caused with new；Also, in order to clear, it may be exaggerated the size of part-structure.In addition, hereinafter retouched
Feature, structure or the characteristic stated can be incorporated in one or more embodiments in any suitable manner.
The noun of locality of middle appearance described below is the direction shown in figure, is not that biswitch of the present utility model is examined
The concrete structure for surveying device is defined.In description of the present utility model, it is also necessary to explanation, unless otherwise clear and definite rule
Fixed and restriction, term " installation ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or detachably connecting
Connect, or be integrally connected；Can be joined directly together, can also be indirectly connected.For the ordinary skill in the art, may be used
Understand concrete meaning of the above-mentioned term in the utility model depending on concrete condition.
In order to more fully understand the utility model, the biswitch of the utility model embodiment is examined with reference to Fig. 1 to Fig. 5
Device 10 is surveyed to be described in detail.
Referring to Fig. 1, Fig. 1 shows that the front view structure of the biswitch detection means 10 of the utility model one embodiment is shown
It is intended to.The utility model embodiment proposes a kind of biswitch detection means 10, can be used in the change oar system of wind power generating set
System, biswitch detection means 10 include one or more switch module 11, positive stop 12 and driving part 13, switches set
Part 11 includes switch carrier 111, proximity switch 112 and limit switch 113, and proximity switch 112 is fixedly connected with limit switch 113
In the same surface of switch carrier 111, and it is spaced apart on switch carrier 111, proximity switch 112 and limit switch 113
Extended line set in predetermined angular, positive stop 12 is used for trigger switch component 11, and driving part 13 is matched somebody with somebody with switch carrier 111
Close and use, rotate for driving switch bearing 111, triggered with enabling limit switch 113 to be limited block 12.
The biswitch detection means 10 that the utility model embodiment provides can be used in judging the blade of wind power generating set
Physical location whether reach expected position, with judge pitch-controlled system whether necessary being failure, meanwhile, can effectively keep away
Exempt from wind power generating set because of non-pitch-controlled system failure and feathering shuts down the generation of situation, reduce the generated energy damage of wind power generating set
Lose.
Specifically, switch carrier 111 is gear, driving part 13 is rack, and driving part 13 can be with switch carrier 111
Engaged transmission, driving part 13 are fixedly connected on positive stop 12.Proximity switch 112 and limit switch 113 can use existing
Existing proximity switch 112 and limit switch 113 in technology, limit switch 113 preferably use Swing-Rod limit switch.Connect
Nearly switch 112 and limit switch 113 are fixedly connected on the same side surface of switch carrier 111, and extended line overlaps so that close
The extended line of switch 112 and limit switch 113 is set in 180 degree, i.e. proximity switch 112 and limit switch 113 is in switch carrier
Mutually set on 111 in 180 degree.The triggering end of proximity switch 112 is located remotely from the side of switch carrier 111, limit switch 113
Swing rod 113a extends to the side away from switch carrier 111, and swing rod 113a length is greater than the length of proximity switch 112,
The one end of swing rod 113a away from switch carrier 111 is provided with the roller 113b being hinged with swing rod 113a.
Also referring to Fig. 2, Fig. 3, Fig. 2, Fig. 3 show the biswitch detection means 10 of the utility model one embodiment
Fundamental diagram under different conditions.Due to driving part 13 and switch carrier 111 can engaged transmission, and positive stop 12
For trigger switch component 11, that is, can be used in triggering proximity switch 112 and limit switch 113.When positive stop 12 is according to pre-
When fixed track is around the motion of switch module 11, the induction region of switch 112 is entered proximal in advance, if proximity switch 112 is touched
Hair, then positive stop 12 can stop motion according to requirements.And when positive stop 12 surrounds switches set according to desired trajectory
Part 11 moves to the induction region of proximity switch 112 and when proximity switch 112 is not triggered, then positive stop 12 can be according to making
With requiring to continue to run with according to predetermined track, now, as shown in Fig. 2 driving part 13 on positive stop 12 will be by
Step contacts simultaneously engaged transmission with switch carrier 111, and under the drive of driving part 13, switch carrier 111 can feel relieved rotation, with
So that limit switch 113 on switch carrier 111 turns to position as shown in Figure 3 with switch carrier 111, with limit
Position block 12 is contacted and is triggered.
Thus, the utility model embodiment provide biswitch detection means 10, enable to proximity switch 112 not by
In the case of triggering, by the mating reaction of driving part 13 and switch carrier 111 so that limit switch 113 can be triggered, can
To avoid in the prior art because the failure of proximity switch 112 itself or the line fault of proximity switch 112 cause proximity switch 112 can not
Trigger and the generation of the situation of feathering shutdown.
According to the triggering mode of limit switch 113, in practical application, can select spacing with longer swing rod 113a
Switch 113, makes it have bigger detection range, to ensure that limit switch 113 can be triggered, can tackle in the prior art
Cause the situation that proximity switch 112 can not be triggered and feathering is shut down because of positive stop 12 or the generation loosening of proximity switch 112
Occur.
The roller 113b and swing rod 113a of limit switch 113 are rotated from bottom to top close to positive stop 12, so first
With positive stop 12 contact must be limit switch 113 roller 113b, roller 113b can connect in a manner of a kind of mitigation
Positive stop 12 is touched, and the swing rod 113a of limit switch 113 and positive stop 12 will not collide, and can avoid limit switch
113 swing rod 113a damages because of collision, ensures the service life of limit switch 113, ensures the safety of pitch-controlled system.
As an alternative embodiment, the number of teeth that rack is driving part 13 is no less than N, N meets formula (1)
Wherein, the predetermined angular of a extended lines between proximity switch 112 and limit switch 113, n are that gear switchs branch
The number of teeth of seat 111, to enable gear and rack to ensure that limit switch 113 is limited block 12 in the range of its engaged transmission
Triggering.
As an alternative embodiment, positive stop 12 is the block structure with predetermined length, width and thickness,
Preferably rectangular block structure, predetermined length, width and the thickness of described positive stop 12 specifically can be according to using needs
Adjustment, as long as meeting that proximity switch 112 and limit switch 113 can be triggered.Length of the driving part 13 along positive stop 12
Spend direction to set, the length of driving part 13 is less than the length of positive stop 12, and driving part 13 is located at the length of positive stop 12
The middle part in direction or the position at close middle part, to cause the both sides of positive stop 12 to be reserved with triggering section, can preferably ensure
Proximity switch 112 and limit switch 113 can be triggered.
Also referring to Fig. 4, Fig. 4 shows the side view of the biswitch detection means 10 of the utility model one embodiment
Figure.Positive stop 12 has two relative ends in its width, when specifically used, can be attached to driving part 13
One of end of the width of positive stop 12 is corresponding with driving part 13 close to the position of end, switch carrier 111
Set, so that both are in same plane, to ensure engaged transmission.Proximity switch 112 and limit switch 113 are located at switch carrier
111 towards the other end of the width of positive stop 12 surface, and without departing from the covering model of the width of positive stop 12
Enclose, to ensure that proximity switch 112 and limit switch 113 can be triggered, and in the pitch-controlled system of application to wind power generating set
When middle, the rotation of blade will not be had an impact.
It is understood that the predetermined angular of proximity switch 112 and the extended line of limit switch 113 is not limited to 180 degree,
It can also be 90 degree or 45 degree, or be 45 degree to any angle between 180 degree.
Driving part 13 is not limited to rack, or and it is local to have dentirostral toothed member, accordingly, switch branch
Seat 111 is not limited to gear, can be the disk-like structure with dentation, as long as can ensure that driving part 13 can be with opening
The engaged transmission of bearing 111 is closed, is felt relieved and rotated with driving switch bearing 111, to enable limit switch 113 to be limited block 12
Triggering.
Certainly, driving part 13 and switch carrier 111 are also not limited to the fit system using engaged transmission.Can at some
In the embodiment of choosing, referring to Fig. 5, Fig. 5 shows the master of the biswitch detection means 10 of another embodiment of the utility model
Depending on structural representation.The present embodiment and the structure of the embodiment shown in Fig. 1 are essentially identical, and difference is, switch carrier 111
To be not provided with the disk-like structure of dentation, and driving part 13 uses motor, and motor is preferably micromachine, the output of motor
Axle is connected with switch carrier 111.Rotated by controlled motor, also can driving switch bearing 111 centering rotate, in switch carrier
Under 111 drive so that limit switch 113 rotates and then so that limit switch 113 can also be limited block 12 and trigger.Can
Whether the physical location of the blade for judging wind power generating set reaches expected position, to judge whether pitch-controlled system is true
Failure be present, meanwhile, effectively avoid wind power generating set because of non-pitch-controlled system failure and the generation of feathering shutdown situation, reduce
The generated energy loss of wind power generating set.
Referring to Fig. 6, Fig. 6 shows the structural representation of the pitch-controlled system of the utility model one embodiment, this practicality
New embodiment additionally provides a kind of pitch-controlled system, for wind power generating set.Pitch-controlled system includes pitch motor, pitch variable bearings
30th, transmission mechanism, encoder, the biswitch detection means 10 and pitch control device of above-mentioned any embodiment.Pitch motor can be
Reducing motor, or common electric machine, at this point it is possible to connect reductor 20 on its output shaft.Pitch variable bearings 30 include turning
Moving-coil 31 and retainer plate 32, turning collar 31 can be relatively fixed circle 32 and rotate, and in the present embodiment, retainer plate 32 is pitch variable bearings 30
Inner ring and the part that is mutually fixedly connected with inner ring, the wheel hub 50 of wind power generating set can be connected to, turning collar 31 is becomes oar
The outer ring of bearing 30 and with the part that outer ring is mutually fixedly connected, can be used in connect wind power generating set blade, in blade
Become oar side to be rotated up.Transmission mechanism includes drive 41, is distributed in the tensioning wheel 42 and cog belt 43 of the both sides of drive 41, and two
Individual tensioning wheel 42 is installed in tensioning wheel fixing device 44, and tensioning wheel fixing device 44 can be connected with wheel hub 50, drive 41
For the input of transmission mechanism, drive 41 and the output shaft direct or indirect connection of pitch motor, cog belt 43 is driver
The output end of structure, the both ends of cog belt 43 are connected by cog belt fixed block 45 with the turning collar 31 of pitch variable bearings 30, to cause
Pitch motor drives turning collar 31 to rotate by drive 41 and cog belt 43.Encoder can be arranged at the tail of pitch motor
Portion, the angle of blade is detected according to the relevant parameter of pitch motor.
The angle of described detection blade and the angle of following described relevant blade refer to the oar about blade
Elongation, propeller pitch angle are also referred to as pitch angle.Wind power generating set uses variable pitch control, by adjusting blade Windward angle, to carry out
The mode of power adjustment, propeller pitch angle refer to fan blade and wind wheel plane included angle.
In the present embodiment, the switch module 11 of biswitch detection means 10 includes two and may be contained within retainer plate 32,
One of them is arranged at the position whether blade is in generating angle can be detected on retainer plate 32 for two switch modules 11, and such as 5
Spend position, another be arranged at can be detected on retainer plate 32 blade whether in feathering shut down angle position, such as 87 degree
Position.The switch carrier 111 of two switch modules 11 is rotatably connected with retainer plate 32, the limiting block of biswitch detection means 10
Block 12 is arranged on turning collar 31 and can rotated in company with turning collar 31, for triggering two switch modules 11, to feed back blade
Angle.
Pitch control device is electrically connected with pitch motor, encoder and switch module 11, for receiving encoder and switch
The electric signal of component 11 and the start and stop for controlling pitch motor.
In the present embodiment, biswitch detection means 10 uses structure as shown in Figure 1, and angle position is shut down with 87 degree of featherings
The operation principle of switch module 11 exemplified by, when positive stop 12 moves to the induction region of proximity switch 112, proximity switch
112 are triggered, and pitch control device receives the electric signal of proximity switch 112, control pitch motor stalling, ensures that feathering is shut down and wants
Ask, now, driving part 13 is rack meeting stop motion, will not go to switch carrier 111 i.e. gear position, that is to say, that
Proximity switch 112 and limit switch 113 will not change relative to the position of retainer plate 32, and limit switch 113 will not be triggered, energy
Enough so that the action frequency of switch carrier 111 and limit switch 113 is less, mechanical failure rate is low.
And when positive stop 12 moves to the induction region of proximity switch 112 and proximity switch 112 is not triggered, due to
Pitch control device does not receive the electric signal of proximity switch 112, thus can not stop pitch motor operation, then positive stop 12 after
Continue as turning collar 31 rotates, to drive driving part 13 to go to the position of switch carrier 111, and drive switch carrier 111
Rotate, now, the driving part 13 on positive stop 12 progressively will be contacted with switch carrier 111 and engaged transmission, in drive division
Under the drive of part 13, switch carrier 111 can be relatively fixed the centering of circle 32 and rotate, to cause the limit on switch carrier 111
Bit switch 113 is with direction rotation of the switch carrier 111 to positive stop 12, and to be contacted with positive stop 12, triggering is spacing to open
113 are closed, pitch control device receives the electric signal of limit switch 113, control pitch motor stalling, ensures that feathering is shut down and requires.
And the blade angle detected when encoder is shut down in the range of angle in feathering, at such as 87 degree, and proximity switch 112
And limit switch 113 is not triggered, then illustrate that pitch-controlled system has failure, wind power generating set needs to trigger failure, shut down
Maintenance.
Said process realized automatically by the mechanical structure in biswitch detection means 10 completely, the driving switch of driving part 13
Bearing 111 rotates to be automatically decided whether to turn by the work characteristics of pitch-controlled system and the mechanical property of biswitch detection means 10 completely
It is dynamic, it is not necessary to which that software participates in control, securely and reliably.
Certainly, the biswitch detection means 10 in pitch-controlled system can also use structure as shown in Figure 5, can now incite somebody to action
Driving part 13 is that motor electrically connects with pitch control device, and the switch module 11 that angle position is still shut down with 87 degree of featherings works
Exemplified by principle, when positive stop 12 moves to the induction region of proximity switch 112, proximity switch 112 is triggered, pitch control
Device receives the electric signal of proximity switch 112, control pitch motor stalling, ensures that feathering is shut down and requires, now, proximity switch
112 and limit switch 113 will not change relative to the position of retainer plate 32, limit switch 113 will not be triggered.
And the blade angle detected when encoder is shut down in the range of angle in feathering, at such as 87 degree, and proximity switch 112
In the case of not being triggered, then pitch control device control driving part 13 works, and driving switch bearing 111 rotates, in drive division
Under the drive of part 13, switch carrier 111 can be relatively fixed the centering of circle 32 and rotate, to cause the limit on switch carrier 111
Bit switch 113 is with direction rotation of the switch carrier 111 to positive stop 12, and to be contacted with positive stop 12, triggering is spacing to open
113 are closed, pitch control device receives the electric signal of limit switch 113, control pitch motor stalling, ensures that feathering is shut down and requires.
And the blade angle detected when encoder is shut down in the range of angle in feathering, at such as 87 degree, and proximity switch 112
And limit switch 113 is not triggered, then illustrate that pitch-controlled system has failure, it is necessary to trigger failure, maintenance down.
In order to ensure the stable operation of the safe handling of blade and unit, in some optional embodiments, in retainer plate
Blade can be detected on 32, and whether position such as 91 degree of positions in position limitation protection angle are further provided with a limit switch (figure
Do not show), the position limitation protection angle is not limited to 91 degree, can be any angle in the range of 95 degree or 91 degree~95 degree, to cause
When the limit switch 113 and proximity switch 112 of switch module 11 break down, position limitation protection angle is triggered by positive stop 12
The limit switch of position is spent, so that pitch motor stalls, as the last guarantee of pitch-controlled system, to ensure the safe handling of blade
And the stable operation of unit.
It is understood that the one of switch module 11 of two switch modules 11 in above-described embodiment is not limited to
5 degree of positions, can also be in other any angular positions in the range of 3 degree of positions, 4 degree of positions or 0 degree~5 degree, and another is opened
Component 11 is closed to be not limited to 87 degree of positions, can also be in other random angles in the range of 86 degree, 88 degree or 85 degree~90 degree
Spend position.
The switch module 11 of biswitch detection means 10 is not limited to two in pitch-controlled system, or one or
It is multiple, it can need to adjust according to use, now, one or more position of switch module 11 on pitch-controlled system retainer plate 32
Putting can need to set according to use.
Meanwhile the retainer plate 32 of pitch-controlled system is to be not limited to the inner ring of pitch variable bearings 30 and be mutually fixedly connected with inner ring
Part, or the outer ring of pitch variable bearings 30 and the part being mutually fixedly connected with outer ring, accordingly, turning collar 31 are simultaneously unlimited
In the outer ring for pitch variable bearings 30 and the part being mutually fixedly connected with outer ring, or the inner ring of pitch variable bearings 30 and and inner ring
The part being mutually fixedly connected, as long as the change oar requirement of blade can be ensured.
Thus, the pitch-controlled system that the utility model embodiment provides, the blade of wind power generating set can accurately be judged
Physical location whether reach expected position, with judge pitch-controlled system itself whether necessary being failure, meanwhile, it is capable to effectively
Avoid wind power generating set because of non-pitch-controlled system failure and feathering shut down situation generation, reduce the generating of wind power generating set
Amount loss.And also there is self-test, for example, when the blade angle that encoder detects shuts down angular range in feathering
Interior, during such as 87 degree positions, proximity switch 112 is not triggered and limit switch 113 can be triggered, then illustrates that non-pitch-controlled system is former
Barrier, and be probably because positive stop 12 loosens, proximity switch 112 loosens, the failure of proximity switch 112 itself or proximity switch
112 line faults cause proximity switch 112 to be triggered, can from it is above-mentioned it is several in terms of overhauled.
Simultaneously as the working characteristics of pitch-controlled system, only past, wraparound moves switch module 11 in certain angle, will not 360
Degree complete cycle continuously rotates, so being relatively easy in terms of cable processing.
When trouble hunting completes to open oar work again, because the transmission of gear, rack is Linear transmission, rack drives tooth
Take turns counter motion so that switch module 11 progressively recovers initial position, and during for driving part 13 using motor, and motor can be with
Controlled by pitch control device, it is also possible that switch module 11 recovers initial position, so being connect in next feathering or maintenance
After nearly switch 112, the signal that can reuse proximity switch 112 carries out position detection.For 5 degree of positions or other positions
The operation principle of switch module 11 is same as above, and is not just repeated herein.
Although the utility model is described by reference to preferred embodiment, model of the present utility model is not being departed from
In the case of enclosing, various improvement can be carried out to it and part therein can be replaced with equivalent.Especially, as long as not depositing
The every technical characteristic being previously mentioned in structural hazard, each embodiment can combine in any way.The utility model
It is not limited to specific embodiment disclosed herein, but all technical schemes including falling within the scope of the appended claims.
Claims (12)
1. a kind of biswitch detection means (10), for the pitch-controlled system of wind power generating set, the pitch-controlled system includes becoming oar
Bearing (30), the pitch variable bearings (30) include retainer plate (32) and the turning collar that can be rotated relative to the retainer plate (32)
(31), it is characterised in that the biswitch detection means (10) includes：
One or more switch module (11), the switch module (11) include switch carrier (111), proximity switch
(112) and limit switch (113), the proximity switch (112) are fixedly connected on the switch branch with the limit switch (113)
The same surface of seat (111), and be spaced apart on the switch carrier (111), the proximity switch (112) and the limit
The extended line of bit switch (113) is set in predetermined angular, and the switch carrier (111) can be arranged at the pitch variable bearings (30)
The retainer plate (32)；
Positive stop (12), the turning collar (31) of the pitch variable bearings (30) can be arranged at and in company with the turning collar
(31) rotate, for triggering the switch module (11)；
Driving part (13), it is used cooperatively with the switch carrier (111), for driving the switch carrier (111) to rotate, with
The limit switch (113) is set to be triggered by the positive stop (12).
2. biswitch detection means (10) according to claim 1, it is characterised in that the predetermined angular be 45 degree~
180 degree.
3. biswitch detection means (10) according to claim 2, it is characterised in that the switch carrier (111) has
Dentation, the driving part (13) are to be arranged on the positive stop (12) and can engage biography with the dentation
Dynamic toothed member.
4. biswitch detection means (10) according to claim 3, it is characterised in that the switch carrier (111) is tooth
Wheel, the driving part (13) is rack.
5. biswitch detection means (10) according to claim 4, it is characterised in that the number of teeth of the rack is no less than N,
N meets formula (1)
Wherein, the predetermined angulars of a between the proximity switch (112) and the limit switch (113) extended line, n are
The number of teeth of the gear.
6. the biswitch detection means (10) according to any one of claim 1 to 5, it is characterised in that the positive stop
(12) it is the block structure with predetermined length, width and thickness, the driving part (13) is along the positive stop (12)
Length direction is set, and the length of the driving part (13) is less than the length of the positive stop (12), the driving part
(13) positioned at the middle part of the positive stop (12) length direction or close to the position at the middle part.
7. biswitch detection means (10) according to claim 6, it is characterised in that the positive stop (12) is wide at it
Degree direction has two relative ends, and the driving part (13) is located at wherein the one of the positive stop (12) width
The individual end is correspondingly arranged, institute close to the position of the end, the switch carrier (111) with the driving part (13)
State proximity switch (112) and the limit switch (113) is located at the switch carrier (111) towards the positive stop (12) width
Spend the surface of another end in direction and without departing from the coverage of the positive stop (12) width.
8. biswitch detection means (10) according to claim 1, it is characterised in that the switch carrier (111) is disk
Shape structure, the driving part (13) are motor, and the output shaft of the motor is connected with the switch carrier (111).
9. the biswitch detection means (10) according to any one of claim 1 to 5,7 and 8, it is characterised in that described spacing
Switch (113) is Swing-Rod limit switch, and the swing rod (113a) of the limit switch (113) is to away from the switch carrier
(111) side extension, the length of the swing rod (113a) is greater than the length of the proximity switch (112), in the swing rod
The one end of (113a) away from the switch carrier (111) is provided with the roller (113b) be hinged with the swing rod (113a).
A kind of 10. pitch-controlled system, for wind power generating set, it is characterised in that including：
Pitch motor；
Pitch variable bearings (30), including turning collar (31) and retainer plate (32), the retainer plate (32) can be connected to the wind-force
The wheel hub (50) of generating set, the turning collar (31) can be used in connecting the blade of the wind power generating set；
Transmission mechanism, input and the output axis connection of the pitch motor, output end are connected with the turning collar (31), to drive
The dynamic turning collar (31) rotates；
Encoder, it can be used in detecting the angle of the blade；
Biswitch detection means (10) as described in any one of claim 1 to 9, the biswitch detection means (10) it is described
Switch module (11) is arranged on the retainer plate (32), and the positive stop (12) of the biswitch detection means (10) is arranged at
It can rotate on the turning collar (31) and in company with the turning collar (31), for triggering the switch module (11), with feedback
The angle of the blade；
Pitch control device, it is electrically connected with the pitch motor, the encoder and the switch module (11), for receiving
State the electric signal of encoder and the switch module (11) and control the start and stop of the pitch motor.
11. pitch-controlled system according to claim 10, it is characterised in that the quantity of the switch module (11) is two,
Two switch modules (11), which are respectively arranged on the retainer plate (32), can detect whether the blade is in generating angle
The position of degree and the position that angle whether is shut down in feathering.
12. pitch-controlled system according to claim 11, it is characterised in that the feathering shut down the scope of angle for 85 degree~
90 degree, the scope of the generating angle is 0 degree~5 degree.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721059593.4U CN207111314U (en) | 2017-08-23 | 2017-08-23 | Biswitch detection means and pitch-controlled system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721059593.4U CN207111314U (en) | 2017-08-23 | 2017-08-23 | Biswitch detection means and pitch-controlled system |
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| CN207111314U true CN207111314U (en) | 2018-03-16 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110967187A (en) * | 2019-12-11 | 2020-04-07 | 积成电子股份有限公司 | Early warning method and system for failure of variable-pitch bearing |
| CN112145349A (en) * | 2020-09-28 | 2020-12-29 | 中国船舶重工集团海装风电股份有限公司 | Wind turbine generator pitch system limit switch trigger identification and control method |
| CN113623147A (en) * | 2021-09-16 | 2021-11-09 | 中国船舶重工集团海装风电股份有限公司 | Method for judging triggering fault of proximity switch of pitch system of wind turbine generator |
| CN113888843A (en) * | 2021-09-03 | 2022-01-04 | 广州市加杰机械设备有限公司 | Dry-type trolley in-place detection alarm device, method and system |
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2017
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110967187A (en) * | 2019-12-11 | 2020-04-07 | 积成电子股份有限公司 | Early warning method and system for failure of variable-pitch bearing |
| CN110967187B (en) * | 2019-12-11 | 2021-11-09 | 积成电子股份有限公司 | Early warning method and system for failure of variable-pitch bearing |
| CN112145349A (en) * | 2020-09-28 | 2020-12-29 | 中国船舶重工集团海装风电股份有限公司 | Wind turbine generator pitch system limit switch trigger identification and control method |
| CN113888843A (en) * | 2021-09-03 | 2022-01-04 | 广州市加杰机械设备有限公司 | Dry-type trolley in-place detection alarm device, method and system |
| CN113888843B (en) * | 2021-09-03 | 2022-12-06 | 广州市加杰机械设备有限公司 | Dry-type trolley in-place detection alarm device, method and system |
| CN113623147A (en) * | 2021-09-16 | 2021-11-09 | 中国船舶重工集团海装风电股份有限公司 | Method for judging triggering fault of proximity switch of pitch system of wind turbine generator |
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