CN105781907B - Maintenance method, device and system applied to labyrinth lubrication channel of wind driven generator - Google Patents
Maintenance method, device and system applied to labyrinth lubrication channel of wind driven generator Download PDFInfo
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- CN105781907B CN105781907B CN201610109438.2A CN201610109438A CN105781907B CN 105781907 B CN105781907 B CN 105781907B CN 201610109438 A CN201610109438 A CN 201610109438A CN 105781907 B CN105781907 B CN 105781907B
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- 238000005461 lubrication Methods 0.000 title claims abstract description 83
- 238000000034 method Methods 0.000 title claims abstract description 26
- 238000012423 maintenance Methods 0.000 title claims abstract description 18
- 238000001514 detection method Methods 0.000 claims abstract description 53
- 238000012512 characterization method Methods 0.000 claims description 10
- 230000005611 electricity Effects 0.000 claims description 5
- 230000001960 triggered effect Effects 0.000 claims description 3
- 238000007789 sealing Methods 0.000 description 23
- 238000005259 measurement Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 7
- 239000002184 metal Substances 0.000 description 7
- 239000000523 sample Substances 0.000 description 7
- 230000036244 malformation Effects 0.000 description 6
- 239000004519 grease Substances 0.000 description 5
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000006870 function Effects 0.000 description 4
- 230000001276 controlling effect Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 2
- 230000006837 decompression Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000035772 mutation Effects 0.000 description 1
- 238000010606 normalization Methods 0.000 description 1
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- 230000008447 perception Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
Classifications
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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
- F05B2240/00—Components
- F05B2240/57—Seals
-
- 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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- Wind Motors (AREA)
Abstract
The invention provides a maintenance method, a device and a system applied to a labyrinth lubrication channel of a wind driven generator, wherein the method comprises the following steps: when the wind driven generator operates, gap information representing a labyrinth lubrication channel gap on the wind driven generator is detected through a distance detection sensor; converting the gap information into a gap electrical signal; and comparing the gap electric signal with a preset gap threshold interval, and if the gap electric signal value does not fall into the gap threshold interval, triggering the wind turbine generator set to adjust the current running state so as to enable the subsequent gap electric signal value to fall into the gap threshold interval. The technical scheme of the invention realizes maintenance of the labyrinth lubrication channel on the running wind driven generator and ensures that the air gap of the labyrinth lubrication channel is in a reasonable range.
Description
Technical field
The present invention relates to technical field of wind power more particularly to a kind of maintenances applied to wind-driven generator labyrinth lubrication channel
Methods, devices and systems.
Background technique
The lubrication of key components and parts, sealing and protection system are the key that influence blower to operate normally skill in wind-driven generator
One of art, especially in high-power straight drive generating set, fan rotation shaft and key components and parts of the bearing as wind-driven generator,
Grease lubrication, dynamic sealing are generallyd use, and lubricating system is protected using labyrinth seal.
The effect of grease lubrication is to provide enough lubricating oil for rotation axis and bearing, bearing roller and bearing internal external circle
Rouge reduces friction and temperature rise.The effect of dynamic sealing is that the lubricant grease of Bearing inner is avoided to generate leakage at runtime and cause
Lubrication shortage of oil.But dynamic sealing meeting contacts friction or collision with generation between rotation axis and bearing, causes rotation axis or axis
It holds and is destroyed.The effect of labyrinth seal is the lubrication pressure reduced at dynamic sealing using the complicated lubrication channel of bending, and is played
Certain sealing effect, to be played a certain protective role to blower lubrication and sealing system.
But wind-driven generator working environment is severe, often the work under high/low temperature, large torque, the adverse circumstances such as alternating load
Make, and labyrinth seal, to work normally labyrinth seal, need to guarantee labyrinth seal lubrication channel as a kind of non-contacting seal
Gap be within zone of reasonableness.When the effect by external load of rotation axis or bearing between labyrinth seal lubrication channel
Gap will increase or reduce, and decompression and sealing function are not had when gap is excessive, and contact is also easy to produce when gap is too small and is rubbed to increase
Collision is wiped or generates, rotation axis and bearing are easily destroyed.
Summary of the invention
The present invention provides a kind of maintaining method applied to wind-driven generator labyrinth lubrication channel, device and system, with reality
Now the labyrinth lubrication channel on running wind-driven generator is safeguarded, guarantees that the air gap of labyrinth lubrication channel is in reasonable
Range.
In order to achieve the above objectives, the embodiment provides a kind of applied to wind-driven generator labyrinth lubrication channel
Maintaining method, comprising: in wind-driven generator operation, be located on wind-driven generator by distance detection sensor detection characterization
The gap information in labyrinth lubrication channel gap；Gap electric signal is converted by the gap information；By the gap electric signal with
Preset gap threshold section is compared, if the gap value of electrical signals is not fallen in gap threshold section, triggers wind
Motor group adjusts current operating conditions, so that the subsequent gap value of electrical signals is fallen into gap threshold section.
It is described the embodiments of the present invention also provide a kind of maintenance device applied to wind-driven generator labyrinth lubrication channel
Device includes: distance detection sensor, signal adapter and controller, and the distance detection sensor is arranged in wind-driven generator
On, for being located at the labyrinth on wind-driven generator by distance detection sensor detection characterization and moistening in wind-driven generator operation
The gap information of sliding path clearance；The signal adapter is connect with the distance detection sensor, for believing the gap
Breath is converted into gap electric signal；The controller is connect with the signal adapter and Wind turbines, for the gap is electric
Signal is compared with preset gap threshold section, if the gap value of electrical signals is not fallen in gap threshold section,
It triggers Wind turbines and adjusts current operating conditions, so that the subsequent gap value of electrical signals is fallen into gap threshold section.
The embodiments of the present invention also provide a kind of maintenance system applied to wind-driven generator labyrinth lubrication channel, packets
It includes: Wind turbines and the maintenance device as described above for being applied to wind-driven generator labyrinth lubrication channel.
Maintaining method provided in an embodiment of the present invention applied to wind-driven generator labyrinth lubrication channel, device and system,
Pass through the gap information in the labyrinth lubrication channel gap on detection wind-driven generator；And gap electric signal is converted by gap information
It is compared with preset gap threshold section, if gap value of electrical signals is not fallen in gap threshold section, triggers wind-powered electricity generation
Unit adjusts current operating conditions, so that subsequent gap value of electrical signals is fallen into gap threshold section, to guarantee that labyrinth lubricates
In the reasonable scope, improve the runnability of wind-driven generator in the gap of path clearance.
Detailed description of the invention
Fig. 1 is wind-driven generator labyrinth lubrication channel and its peripheral structure schematic diagram in the prior art；
Fig. 2 is the side of maintaining method one embodiment provided by the invention applied to wind-driven generator labyrinth lubrication channel
Method flow chart；
Fig. 3 is the knot of maintenance device one embodiment provided by the invention applied to wind-driven generator labyrinth lubrication channel
Structure block diagram；
Fig. 4 a is the axially mounted position view after distance detection sensor provided by the invention is installed to dead axle；
Fig. 4 b is the circumferential schematic layout pattern after distance detection sensor provided by the invention is installed to dead axle；
When Fig. 5 is that the maintenance device provided by the invention applied to wind-driven generator labyrinth lubrication channel is installed to dead axle
Schematic diagram of a scenario；
Fig. 6 is the structural schematic diagram of signal adapter provided by the invention.
Drawing reference numeral explanation
1- rotation axis, 2- dead axle, 3- bearing；Dynamic sealing on the inside of 4- bearing, the equal rouge block of 5-, 6- labyrinth seal, 7- dynamic sealing,
8- sealing clamp, 31- distance detection sensor, 32- signal adapter, 33- controller；311- probe, 312- extension cable,
32 '-fore-lying devices, 321- oscillator, 322- detection circuit, 323- amplifier.
Specific embodiment
Fig. 1 is common existing wind-driven generator labyrinth lubrication channel and its peripheral structure schematic diagram, comprising: rotation axis 1,
Dead axle 2, bearing 3, bearing inside dynamic sealing 4, equal rouge block 5, labyrinth seal 6, dynamic sealing 7 and sealing clamp 8.
Specifically, structure shown in Fig. 1 has the structure arranged about horizontal axis in 360 ° of range complete cycles, rotation axis 1
It is fixedly connected with impeller of wind turbine set, as impeller of wind turbine set rotates synchronously.Dead axle 2 is fixation member, is being operated normally
Any movement is not generated in journey.3 outer ring of bearing and dead axle 2 are interference fitted；3 inner ring of bearing and rotation axis 1 are interference fitted, with rotation
Axis 1 rotates synchronously, and 3 Internal and external cycle of bearing is connected by rolling element.On the inside of bearing dynamic sealing 4 be mounted on rotation axis 1 and dead axle 2 it
Between, it is located on the right side of bearing inner race, is mainly used for preventing lubricating grease leakage in bearing 3, causes lubrication shortage of oil.Equal rouge block 5 passes through
It is fixedly connected and is mounted on 1 right side of rotation axis, main function is to reduce grease amount, fills redundant space.Labyrinth seal 6 is located at equal
5 upside of rouge block is fixedly connected on 2 left side of dead axle, and labyrinth seal 6 and rotation axis 1 form labyrinth seal lubrication channel, plays certain
The lubricating oil of degree depressurizes and sealing effect.Dynamic sealing 7 is contact seal, has seal lip, is risen jointly with labyrinth seal 6
To the effect of lubrication sealing, dynamic sealing 7 is fixed by sealing clamp 8, and sealing clamp 8 is fixedly connected in rotation axis 1.
When Wind turbines are by load from impeller side, the total of above-mentioned shafting can be deformed, so that fan
Palace sealing lubrication path clearance increases or reduces.Labyrinth seal lubrication channel gap can be caused to occur when institute is loaded larger
Big or too small phenomenon does not have decompression when lubrication channel gap is excessive and sealing is made if wind-driven generator is continued to rotate
With when gap is too small, it will generate friction or collision.
Labyrinth seal lubrication channel gap is influenced by above-mentioned shafting deformation, and above-mentioned shafting deflection can be above-mentioned by adjusting
The deformational displacement of any deformation occurs position even is eliminated in shafting to be eased.For example, as shown in fig. 1, passing through adjusting
The distance between rotation axis 1 and dead axle 2 R1 can be such that shafting deforms to be controlled, thus between Indirect method labyrinth seal lubrication channel
Gap is at zone of reasonableness.
Inventive concept of the invention, using control protected mode, is led in labyrinth seal lubrication based on distance controlling technology
When road gap is increased or reduced because of malformation, implements to automatically control by changing the operating status of Wind turbines and adjust
Section improves the malformation state of Wind turbines, and vibration and noise reducing, and then guarantees that labyrinth seal lubrication channel gap is in always
Within zone of reasonableness, prevent dry friction or metal bump, improves fan operation performance.
Embodiment one
Fig. 2 is the side of maintaining method one embodiment provided by the invention applied to wind-driven generator labyrinth lubrication channel
Method flow chart, the executing subject of this method can be the sensor or monitoring device for being integrated with distance detection function.Such as Fig. 2 institute
Show, should be specifically included applied to the maintaining method of wind-driven generator labyrinth lubrication channel:
S210 is located on wind-driven generator in wind-driven generator operation by distance detection sensor detection characterization
The gap information in labyrinth lubrication channel gap.
In wind-driven generator operational process, Wind turbines receive external environment influence, generate load, keep labyrinth lubrication logical
The gap in road gap generates variation.As shown in Figure 1, being difficult between direct Measurement channel due to labyrinth lubrication channel narrow space
Gap, therefore the present embodiment is that (such as grating sensor, laser sensor, current vortex sensor, capacitor pass by distance detection sensor
Sensor, ultrasonic sensor etc.) it is arranged on wind-driven generator, by detection obtain that labyrinth lubrication channel gap can be characterized
Gap information to measure the size in labyrinth lubrication channel gap indirectly.As shown in figure 1, wind-driven generator during rotation, turns example
Moving axis 1 and labyrinth seal 6 are being not susceptible to relative displacement along horizontal axis direction, and in the plane of vertical-horizontal axis direction
Interior, due to rotation axis 1 relative to dead axle 2 rotation, and occur the non-round rotation of load generation when blade is by fitful wind, all
Influence whether the variation in labyrinth lubrication channel gap.Therefore, by detection rotation axis 1 and dead axle 2 at one of vertical central axis line
Gap size R1 and situation of change between axis in plane can calculate labyrinth lubrication channel gap in vertical-horizontal indirectly
Gap size in the plane of axis direction.
Since wind power generating set working environment is complicated and changeable, used load has the characteristics that irregular, alternation, mutation,
Cause the distribution of above-mentioned distance R1 circumferentially not identical, therefore the arrangement of distance detection sensor can be according to work requirements complete cycle
Arrangement.For example complete cycle arrangement is all carried out in rotation axis 1, dead axle 2 or rotation axis 1 and dead axle 2, it can also be according to work requirements only
It is arranged in specific position, arrangement quantity can also be specifically arranged according to work requirements, to detect the complete model of gap R1 variation
It encloses.
It should be understood that those skilled in the art can also be measured indirectly by choosing the other positions in wind-driven generator
Labyrinth lubrication channel gap changes in the gap in other directions, or increases subsidiary equipment and measure, the present embodiment pair
Measuring the method for above-mentioned gap information and the particular content of gap information and form, (content of gap information is between actual measurement
Gap position, the data type that the form of gap information obtains when being actual measurement, this is related with the type of the sensor of use) no
It limits.
Gap information is converted gap electric signal by S220.
It is corresponding since the type of the sensor of use and the principle of acquisition gap size are different during actual measurement
The form of obtained gap information is also to be not quite similar.For example, the gap information for using electric vortex sensor measuring to obtain is resistance
The anti-, gap information that uses capacitance sensor measurement to obtain is capacitor etc..For the ease of these gap informations are unitized,
It is compared with preset standard clearance threshold interval, the gap information of sensor measurement is switched to common and can grasped by the present embodiment
The gap electric signal of work, such as voltage signal or current signal.
For example, when detecting gap letter of the above-mentioned gap R1 as characterization labyrinth lubrication channel gap using current vortex sensor
When breath, current vortex sensor can be fixedly mounted on the mounting surface of 2 outer surface of dead axle, current vortex sensor includes probe coil
And extension cable, the cylindrical form interior surface of rotation axis 1 itself as tested metal covering, when between tested metal covering and probe away from
When changing from R1, the coil impedance for coil of popping one's head in also changes, and the variation of coil impedance can be oscillated device perception, draws
The variation of oscillation voltage amplitude is played, and this can return with the oscillating voltage of distance change through detection, filtering, linear compensation, amplification
It is converted to the variation of voltage (electric current) after one processing, is finally completed mechanical displacement (distance R1) and is converted into voltage or current signal.
Gap electric signal is compared, if gap value of electrical signals is not fallen within by S230 with preset gap threshold section
In gap threshold section, then Wind turbines adjustment current operating conditions are triggered, so that between subsequent gap value of electrical signals is fallen into again
In gap threshold interval.
In order in the reasonable scope, labyrinth lubrication channel be avoided to occur rubbing and touch the control of labyrinth lubrication channel gap
It hits, the present embodiment presets a gap threshold section, which is that lubrication channel gap in labyrinth is in zone of reasonableness
When, reasonable value range corresponding to above-mentioned gap value of electrical signals.When after distance detection sensor detection and signal conversion
Obtained gap electric signal is fallen into the gap threshold section, then characterizes current labyrinth lubrication channel gap and be in zone of reasonableness,
It need not be handled；Between the gap electric signal obtained after distance detection sensor detection and signal conversion does not fall within this
In gap threshold interval, then characterizes current labyrinth lubrication channel gap and be in other than zone of reasonableness, respective handling equipment can be touched at this time
It sends out Wind turbines and adjusts current operating conditions, so that subsequent obtained gap value of electrical signals is fallen into again in gap threshold section,
Labyrinth lubrication channel gap is set to be in zone of reasonableness.
In practical application scene, above-mentioned detector gap information, conversion generate gap electric signal and gap threshold section
Compare, the process of adjustment running of wind generating set state is recyclable to be carried out, until gap value of electrical signals falls into gap threshold area again
Until interior or Wind turbines system requirements are shut down.
Wherein, imitative through theoretical calculation and finite element for zone of reasonableness locating for lubrication channel gap in labyrinth in above scheme
It can determine that lubrication channel variation range is 3mm to 5mm after true analysis, the zone of reasonableness of corresponding distance R1 variation is 5mm (lower limit
Threshold values) to 10mm (upper limit threshold values).In concrete application scene, can by this zone of reasonableness by fore-lying device be converted to voltage (or
Electric current) signal, and with above-mentioned such as by the upper limit value of voltage (or electric current) signal exported after electric vortex sensor measuring and conversion
Together with lower limit value be passed to control centre, control centre carry out signal judgement, when measurement variation amount in 10mm between 5mm
When, regulated quantity 0；When measurement variation amount is greater than 10mm or is less than 5mm, regulated quantity needed for control centre calculates, and transmit
Variable pitch adjusting is carried out to the pitch control device of Wind turbines.If variable pitch adjusting is unable to satisfy when requiring, revolving speed can be also carried out simultaneously
It adjusts, power regulation.The present embodiment is not construed as limiting the concrete operations object of Wind turbines adjustment current operating conditions and behavior,
It is any by changing current running of wind generating set state, and subsequent obtained gap value of electrical signals is made to fall into gap threshold again
Operating status adjustment in value section can be classified as the object being adjusted, and be not limited to variable pitch adjusting, variable speed is adjusted or become function
Rate is adjusted.
Specifically, in step S220, wind-driven generator upper rotary shaft is detected by distance detection sensor and dead axle exists
When shaft clearance information in one plane of vertical central axis line is as monitoring object, corresponding gap threshold section is characterization labyrinth
In zone of reasonableness, corresponding generator upper rotary shaft and dead axle are in a plane of vertical central axis line in lubrication channel gap
The corresponding shaft clearance threshold interval of the gap electric signal of shaft clearance information.
Maintaining method provided in an embodiment of the present invention applied to wind-driven generator labyrinth lubrication channel is based on distance controlling
Technology, when labyrinth seal lubrication channel gap is increased or reduced because of malformation, by the operation shape for changing Wind turbines
State is implemented to automatically control and be adjusted, and improves the malformation state of Wind turbines, and vibration and noise reducing, and then guarantee labyrinth seal
Lubrication channel gap is within zone of reasonableness always, prevents dry friction or metal bump, improves fan operation performance.
Further, this programme can also reduce the design rigidity of rotation axis or dead axle to a certain extent, reduce structure weight
Amount, reduces cost.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Embodiment two
Fig. 3 is the knot of maintenance device one embodiment provided by the invention applied to wind-driven generator labyrinth lubrication channel
Method and step as shown in Figure 1 can be performed in structure block diagram.As shown in figure 3, should be applied to the maintenance of wind-driven generator labyrinth lubrication channel
Device includes: distance detection sensor 31, signal adapter 32 and controller 33, in which:
Distance detection sensor 31 is arranged on wind-driven generator, for being examined by distance in wind-driven generator operation
Survey the gap information that sensor detection characterization is located at the labyrinth lubrication channel gap on wind-driven generator；Signal adapter 32 with away from
It is connected from detection sensor 31, for converting gap electric signal for gap information；Controller 33 and signal adapter 32 and wind
Motor group connection, for gap electric signal to be compared with preset gap threshold section, if gap value of electrical signals is not fallen
Enter in gap threshold section, then Wind turbines adjustment current operating conditions is triggered, so that subsequent gap value of electrical signals falls into gap
In threshold interval.
Further, as shown in figures 4 a and 4b, above-mentioned distance detection sensor is arranged in outside the dead axle 2 of wind-driven generator
Surface, for detecting wind-driven generator upper rotary shaft 1 and shaft clearance information of the dead axle 2 in a plane of vertical central axis line.
Specifically, as shown in figures 4 a and 4b, due to the outer surface of dead axle 2 and inner surface (the tested metal of rotation axis 1
Face) it is cylindrical surface, therefore the outer surface of the plane perpendicular to horizontal axis and comprising current vortex sensor and dead axle 2 and turn
The intersection of the inner surface of moving axis 1 is space circle, and 3 points in known space circle shape, it can be obtained by mathematical algorithm
Space circle equation need to only measure at any three the not corresponding distance R1 of collinear points, can calculate week according to mathematical algorithm
To the distance R1 of any position within the scope of 360 °, and then upper limit value and lower limit value that distance R1 changes within the scope of 360 ° are obtained,
Therefore, as shown in fig 4b, three distance detection sensors 31 such as current vortex sensor can be used, arbitrarily not conllinear is arranged in
On the outer surface mounting surface of dead axle 2, preferred arrangement is that 3 current vortex sensors are evenly arranged in dead axle 2 in Fig. 4 b
Outer surface, i.e. distance detection sensor 31 are at least three, and 2 outer surface of dead axle of wind-driven generator is equidistantly arranged in,
And in a plane of vertical central axis line, alternatively, 1 inner surface of rotation axis of wind-driven generator is equidistantly set, and
In one plane of vertical central axis line.As shown in figure 5, being provided by the invention applied to wind-driven generator labyrinth lubrication channel
The connection schematic diagram of maintenance device and dead axle.
Optionally, above-mentioned distance detection sensor 31 includes: grating sensor, laser sensor, current vortex sensor, electricity
A kind of or at least two combined sensors in appearance sensor, ultrasonic sensor.
When distance detection sensor 31 is current vortex sensor, corresponding signal adapter 32 can be for as before in Fig. 6
Set device 32 ', comprising: sequentially connected oscillator 321, detection circuit 322 and amplifier 323, wherein current vortex sensor 31 with
Oscillator 321 connects, and amplifier 323 is connect with controller 33.
As shown in fig. 6, each current vortex sensor 31 includes 311 (being provided with probe coil in probe) of probe, extends electricity
Cable 312.In the detection process, using the cylindrical form interior surface of rotation axis 1 itself as tested dignity, when tested metal covering and probe
When the distance between 311 R1 change, the coil impedance for coil of popping one's head in also changes, and the variation of coil impedance causes to shake
Swing the variation of the oscillating voltage amplitude of device 321, and this with distance change oscillating voltage through 322 detection of detection circuit, filtering,
Amplifying circuit 323 is delivered to after linear compensation processing and amplifies the variation for being converted to voltage (electric current) after normalization, finally
Mechanical displacement (distance R1) is converted into voltage or current signal is delivered to controller 33 and carries out subsequent processing.
Further, above-mentioned gap threshold section is characterization labyrinth lubrication channel gap in zone of reasonableness, corresponding hair
Motor upper rotary shaft between centers corresponding with the gap electric signal of shaft clearance information of the dead axle in a plane of vertical central axis line
Gap threshold interval.
Further, above controller 33 be specifically used for triggering Wind turbines carry out variable pitch, variable speed, in Variable power extremely
Few a kind of operation, so that subsequent gap value of electrical signals is fallen into corresponding gap threshold section.
Maintenance device provided by the invention applied to wind-driven generator labyrinth lubrication channel is based on distance controlling technology,
When labyrinth seal lubrication channel gap is increased or reduced because of malformation, by changing the operating status of Wind turbines come real
It applies automatic control and adjusts, improve the malformation state of Wind turbines, and vibration and noise reducing, and then guarantee that labyrinth seal lubrication is logical
Road gap is within zone of reasonableness always, prevents dry friction or metal bump, improves fan operation performance.
Further, this programme can also reduce the design rigidity of rotation axis or dead axle to a certain extent, reduce structure weight
Amount, reduces cost.
Further, the present invention also provides a kind of maintenance system applied to wind-driven generator labyrinth lubrication channel, packets
It includes: Wind turbines and the maintenance device as described above for being applied to wind-driven generator labyrinth lubrication channel.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (12)
1. a kind of maintaining method applied to wind-driven generator labyrinth lubrication channel characterized by comprising
In wind-driven generator operation, it is logical that the labyrinth lubrication on wind-driven generator is located at by distance detection sensor detection characterization
The gap information in road gap；
Gap electric signal is converted by the gap information；
The gap electric signal is compared with preset gap threshold section, if between the gap value of electrical signals is not fallen within
In gap threshold interval, then Wind turbines adjustment current operating conditions are triggered, so that the subsequent gap value of electrical signals falls into gap
In threshold interval.
2. the method according to claim 1, wherein it is described wind-driven generator operation when, pass through distance detection
Sensor detection characterization is located at the gap information in the labyrinth lubrication channel gap on wind-driven generator, comprising:
Wind-driven generator upper rotary shaft and dead axle are detected in a plane of vertical central axis line by distance detection sensor
Shaft clearance information.
3. according to the method described in claim 2, it is characterized in that, the gap threshold section is to characterize the labyrinth lubrication to lead to
Road gap is in zone of reasonableness, the shaft clearance of corresponding generator upper rotary shaft and dead axle in a plane of vertical central axis line
The corresponding shaft clearance threshold interval of the gap electric signal of information.
4. method according to any one of claim 1-3, which is characterized in that the current fortune of triggering Wind turbines adjustment
Row state, so that the subsequent gap value of electrical signals is fallen into gap threshold section, comprising:
It triggers Wind turbines and carries out the operation of at least one of variable pitch, variable speed, Variable power, so that the subsequent gap electric signal
Value is fallen into the corresponding gap threshold section.
5. a kind of maintenance device applied to wind-driven generator labyrinth lubrication channel, which is characterized in that described device includes: distance
Detection sensor, signal adapter and controller,
The distance detection sensor is arranged on wind-driven generator, for being detected by distance in wind-driven generator operation
Sensor detection characterization is located at the gap information in the labyrinth lubrication channel gap on wind-driven generator；
The signal adapter is connect with the distance detection sensor, for converting gap telecommunications for the gap information
Number；
The controller is connect with the signal adapter and Wind turbines, is used for the gap electric signal and preset gap
Threshold interval is compared, if the gap value of electrical signals is not fallen in gap threshold section, triggers Wind turbines adjustment
Current operating conditions, so that the subsequent gap value of electrical signals is fallen into gap threshold section.
6. device according to claim 5, which is characterized in that wind-driven generator is arranged in the distance detection sensor
Dead axle outer surface, for detecting the shaft clearance letter of wind-driven generator upper rotary shaft and dead axle in a plane of vertical central axis line
Breath.
7. device according to claim 6, which is characterized in that the gap threshold section is to characterize the labyrinth lubrication to lead to
Road gap is in zone of reasonableness, the shaft clearance of corresponding generator upper rotary shaft and dead axle in a plane of vertical central axis line
The corresponding shaft clearance threshold interval of the gap electric signal of information.
8. the device according to any one of claim 5-7, which is characterized in that the controller is specifically used for triggering wind-powered electricity generation
Unit carries out variable pitch, variable speed, the operation of at least one of Variable power so that the subsequent gap value of electrical signals fall into it is corresponding
In the gap threshold section.
9. the device according to any one of claim 5-7, which is characterized in that the distance detection sensor includes: light
Gate sensor, laser sensor, current vortex sensor, capacitance sensor, a kind of in ultrasonic sensor or at least two combinations
Sensor.
10. the device according to any one of claim 5-7, which is characterized in that the distance detection sensor is at least
Three, and the dead axle outer surface of the wind-driven generator is equidistantly set, and in a plane of vertical central axis line, or
The rotation axis inner surface of the wind-driven generator is equidistantly arranged in person, and in a plane of vertical central axis line.
11. device according to claim 9, which is characterized in that the distance detection sensor be current vortex sensor,
Corresponding signal adapter is fore-lying device, comprising: sequentially connected oscillator, detection circuit and amplifier, wherein the electricity whirlpool
Flow sensor is connect with the oscillator, and the amplifier is connect with the controller.
12. a kind of maintenance system applied to wind-driven generator labyrinth lubrication channel characterized by comprising Wind turbines and
Maintenance device applied to wind-driven generator labyrinth lubrication channel described in any one of claim 5-11 as above.
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| CN108418351B (en) * | 2018-01-12 | 2019-10-01 | 远景能源（江苏）有限公司 | Wind-driven generator air gap real-time detecting system and method |
| CN114576068B (en) * | 2022-03-21 | 2024-05-17 | 浙江理工大学 | Water turbine convenient to real-time state monitoring |
| CN115234819B (en) * | 2022-07-20 | 2024-03-19 | 中铁工程装备集团有限公司 | Tunneling machine main driving sealing grease follow-up control system and control method |
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