CN105781907A - 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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- CN105781907A CN105781907A CN201610109438.2A CN201610109438A CN105781907A CN 105781907 A CN105781907 A CN 105781907A CN 201610109438 A CN201610109438 A CN 201610109438A CN 105781907 A CN105781907 A CN 105781907A
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- 238000005461 lubrication Methods 0.000 title claims abstract description 83
- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000012423 maintenance Methods 0.000 title claims abstract description 6
- 238000001514 detection method Methods 0.000 claims abstract description 50
- 238000012360 testing method Methods 0.000 claims description 4
- 238000007789 sealing Methods 0.000 description 21
- 238000005259 measurement Methods 0.000 description 9
- 239000000523 sample Substances 0.000 description 9
- 239000002184 metal Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 239000004519 grease Substances 0.000 description 6
- 230000036244 malformation Effects 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 230000001276 controlling effect Effects 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 4
- 230000006870 function Effects 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000010687 lubricating oil Substances 0.000 description 3
- 238000004422 calculation algorithm Methods 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 238000010276 construction Methods 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
- 239000000314 lubricant Substances 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 238000010606 normalization Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 240000004859 Gamochaeta purpurea Species 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000036772 blood pressure Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000008447 perception Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000004088 simulation 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
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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 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, particularly relate to and a kind of be applied to the maintaining method of wind-driven generator labyrinth lubrication channel, device and system.
Background technology
In wind-driven generator, the lubrication of key components and parts, sealing and protection system are to affect one of properly functioning key technology of blower fan; especially directly drive in generating set high-power; fan rotation shaft and the bearing key components and parts as wind-driven generator; generally adopt grease lubrication; movable sealing, and utilize labyrinth seal that lubricating system is protected.
The effect of grease lubrication is for rotating the lubricant grease that axle and bearing, bearing roller and bearing internal external circle provide enough, reducing friction and temperature rise.The effect of movable sealing is the lubricating oil deficiency avoided the lubricant grease of Bearing inner operationally to produce leakage and cause.But movable sealing meeting produces between axle and bearing to contact friction or collision with rotating, and causes rotation axle or bearing to be destroyed.The effect of labyrinth seal is the lubrication pressure that the lubrication channel utilizing bending complicated reduces movable sealing place, and plays certain sealing effectiveness, thus blower fan lubrication and sealing system are played certain protective effect.
But wind-driven generator work under bad environment, through high/low temperature of being everlasting, high pulling torque, work under the adverse circumstances such as alternate load, and labyrinth seal is as a kind of non-contacting seal, for making labyrinth seal normal operation, need to ensure that the gap of labyrinth seal lubrication channel is within zone of reasonableness.When rotation axle or bearing are subject to the effect of external load, the gap of labyrinth seal lubrication channel can increase or reduce, blood pressure lowering and sealing function is not had during excesssive gap, it is easily generated contact when gap is too small thus increasing friction or producing collision, rotates axle and bearing is easily destroyed.
Summary of the invention
The present invention provides a kind of and is applied to the maintaining method of wind-driven generator labyrinth lubrication channel, device and system, to realize the labyrinth lubrication channel on operating wind-driven generator is safeguarded, it is ensured that the air gap of labyrinth lubrication channel is in zone of reasonableness.
For reaching above-mentioned purpose, The embodiment provides a kind of maintaining method being applied to wind-driven generator labyrinth lubrication channel, including: when wind-driven generator runs, characterized the gap information in the lubrication channel gap, labyrinth being positioned on wind-driven generator by distance detection sensor detection；Described gap information is converted into the gap signal of telecommunication；The described gap signal of telecommunication is compared with the gap threshold interval preset, if described gap value of electrical signals does not fall within gap threshold interval, then triggers Wind turbines and adjust current operating conditions, so that follow-up described gap value of electrical signals falls in gap threshold interval.
Embodiments of the invention additionally provide a kind of attending device being applied to wind-driven generator labyrinth lubrication channel, described device includes: distance detection sensor, signal adapter and controller, described distance detection sensor is arranged on wind-driven generator, for when wind-driven generator runs, being characterized the gap information in the lubrication channel gap, labyrinth being positioned on wind-driven generator by distance detection sensor detection；Described signal adapter is connected with described distance detection sensor, for described gap information is converted into the gap signal of telecommunication；Described controller is connected with described signal adapter and Wind turbines, for the described gap signal of telecommunication is compared with the gap threshold interval preset, if described gap value of electrical signals does not fall within gap threshold interval, then trigger Wind turbines and adjust current operating conditions, so that follow-up described gap value of electrical signals falls in gap threshold interval.
Embodiments of the invention additionally provide a kind of maintenance system being applied to wind-driven generator labyrinth lubrication channel, including: Wind turbines and the attending device being applied to wind-driven generator labyrinth lubrication channel as above.
What the embodiment of the present invention provided is applied to the maintaining method of wind-driven generator labyrinth lubrication channel, device and system, by detecting the gap information in the lubrication channel gap, labyrinth on wind-driven generator；And gap information is converted into the gap signal of telecommunication with preset gap threshold interval compare, if gap value of electrical signals does not fall within gap threshold interval, then trigger Wind turbines and adjust current operating conditions, so that follow-up gap value of electrical signals falls in gap threshold interval, thus ensureing that the gap in lubrication channel gap, labyrinth is in the reasonable scope, improve the runnability of wind-driven generator.
Accompanying drawing explanation
Fig. 1 is prior art wind electromotor labyrinth lubrication channel and peripheral structure schematic diagram thereof；
Fig. 2 is the method flow diagram of one embodiment of maintaining method being applied to wind-driven generator labyrinth lubrication channel provided by the invention；
Fig. 3 is the structured flowchart of one embodiment of attending device being applied to wind-driven generator labyrinth lubrication channel provided by the invention；
Fig. 4 a is the axially mounted position view after distance detection sensor provided by the invention is mounted on dead axle；
Fig. 4 b is the circumferential schematic layout pattern after distance detection sensor provided by the invention is mounted on dead axle；
Fig. 5 is the attending device being applied to wind-driven generator labyrinth lubrication channel provided by the invention scene schematic diagram when being mounted on dead axle；
Fig. 6 is the structural representation of signal adapter provided by the invention.
Drawing reference numeral explanation
1-rotates axle, 2-dead axle, 3-bearing；Movable sealing inside 4-bearing, the equal fat block of 5-, 6-labyrinth seal, 7-movable sealing, 8-sealing clamp, 31-distance detection sensor, 32-signal adapter, 33-controller；311-probe, 312-extension cable, 32 '-fore-lying device, 321-agitator, 322-testing circuit, 323-amplifier.
Detailed description of the invention
Fig. 1 is common existing wind-driven generator labyrinth lubrication channel and peripheral structure schematic diagram thereof, including: rotate movable sealing 4 inside axle 1, dead axle 2, bearing 3, bearing, equal fat block 5, labyrinth seal 6, movable sealing 7 and sealing clamp 8.
Specifically, structure shown in Fig. 1 has the structure arranged about horizontal axis at 360 ° of scope complete cycles, and rotation axle 1 is fixing with impeller of wind turbine set to be connected, along with impeller of wind turbine set synchronous axial system.Dead axle 2 is fixing parts, does not produce any motion in normal course of operation.Bearing 3 outer ring and dead axle 2 interference fit；Bearing 3 inner ring and rotation axle 1 interference fit, with rotating axle 1 synchronous axial system, bearing 3 Internal and external cycle is connected by rolling element.Inside bearing, movable sealing 4 is arranged between rotation axle 1 and dead axle 2, is positioned on the right side of bearing inner race, is mainly used in preventing lubricating grease leakage in bearing 3, causes lubricating oil not enough.Equal fat block 5 is arranged on the right side of rotation axle 1 by fixing connection, and Main Function is to reduce grease amount, fills redundant space.Labyrinth seal 6 is positioned on the upside of equal fat block 5, is fixedly connected on the left of dead axle 2, and labyrinth seal 6 forms labyrinth seal lubrication channel with rotating axle 1, plays the decompression of a degree of lubricating oil and sealing effectiveness.Movable sealing 7 is contact seal, has seal lip, and with the effect that lubrication and seal is played in labyrinth seal 6 jointly, movable sealing 7 is fixed by sealing clamp 8, and sealing clamp 8 is fixedly connected on rotation axle 1.
When Wind turbines is subject to the load from impeller side, the total of above-mentioned axle system can be deformed so that labyrinth seal lubrication channel gap increases or reduces.When loaded bigger time can cause labyrinth seal lubrication channel gap that excessive or too small phenomenon occurs, if wind-driven generator is rotated further, do not have decompression and sealing function when lubrication channel excesssive gap, when gap is too small, it will produce friction or collision.
Labyrinth seal lubrication channel gap is subject to above-mentioned axle system deformation effect, and above-mentioned axle system deflection can be eased and even eliminate by regulating arbitrary deformational displacement deforming upon position in above-mentioned axle system.Such as, as shown in fig. 1, the deformation of axle system can be made to be controlled by regulating the distance R1 rotated between axle 1 and dead axle 2, thus Indirect method labyrinth seal lubrication channel gap so that it is it is in zone of reasonableness.
The inventive concept of the present invention; it is based on distance controlling technology; adopt and control protected mode; when labyrinth seal lubrication channel gap increases because of malformation or reduces, implement to automatically control and regulate by changing the running status of Wind turbines, improve the malformation state of Wind turbines; and vibration and noise reducing; and then ensure that labyrinth seal lubrication channel gap is within zone of reasonableness all the time, it is prevented that there is dry friction or metal bump, improve fan operation performance.
Embodiment one
Fig. 2 is the method flow diagram of one embodiment of maintaining method being applied to wind-driven generator labyrinth lubrication channel provided by the invention, and the executive agent of the method can be the sensor or the supervising device that are integrated with distance detection function.As in figure 2 it is shown, this maintaining method being applied to wind-driven generator labyrinth lubrication channel specifically includes:
S210, when wind-driven generator runs, characterizes the gap information in the lubrication channel gap, labyrinth being positioned on wind-driven generator by distance detection sensor detection.
In wind-driven generator running, Wind turbines receives external environment impact, produces load, makes the gap in lubrication channel gap, labyrinth produce change.As shown in Figure 1, due to labyrinth lubrication channel narrow space, it is difficult to the gap of direct Measurement channel, therefore the present embodiment is distance to be detected sensor (such as grating sensor, laser sensor, current vortex sensor, capacitance sensor, ultrasonic sensor etc.) be arranged on wind-driven generator, indirectly measures the size in lubrication channel gap, labyrinth by detecting the gap information obtaining characterizing lubrication channel gap, labyrinth.Such as, in Fig. 1, wind-driven generator is in rotation process, rotate axle 1 and be not susceptible to relative displacement with labyrinth seal 6 along horizontal axis direction, and in the plane of vertical-horizontal axis direction, owing to rotating the axle 1 rotation relative to dead axle 2, and the non-round rotation that load produces occurs when blade is subject to fitful wind, all can have influence on the change in lubrication channel gap, labyrinth.Therefore, by detecting the gap length R1 and situation of change rotated between axle 1 and the dead axle 2 axle in a plane of vertical centering control axis, it is possible to indirect calculation goes out the lubrication channel gap, labyrinth gap length in the plane of vertical-horizontal axis direction.
Owing to wind power generating set working environment is complicated and changeable, used load has the features such as irregular, alternation, sudden change, causes above-mentioned distance R1 distribution circumferentially and differs, and therefore the layout of distance detection sensor can be arranged according to work requirements complete cycle.Such as rotating axle 1, dead axle 2, or rotate axle 1 and dead axle 2 all carry out complete cycle layout, it is possible to only arranging at ad-hoc location according to work requirements, arranging that quantity is specifically arranged also dependent on work requirements, thus detecting the gap R1 full breadth changed.
Understandable, those skilled in the art indirectly measure lubrication channel gap, labyrinth also by other positions chosen in wind-driven generator and change in the gap in other directions, or increase the measurement of subsidiary equipment, to measuring the particular content of the method for above-mentioned gap information and gap information and form, (content of gap information is the interstitial site of actual measurement to the present embodiment, the data type that the form of gap information obtains when being actual measurement, this is relevant with the kind of the sensor adopted) be not construed as limiting.
S220, is converted into the gap signal of telecommunication by gap information.
In actual measurement process, due to the kind of sensor adopted and to obtain the principle of gap length different, the form of the gap information that correspondence obtains also is not quite similar.Such as, to adopt the gap information that obtains of electric vortex sensor measuring be impedance, adopts the gap information that capacitance sensor measurement obtains is electric capacity etc..For the ease of these gap information being unitized, comparing with default standard clearance threshold interval, the gap information of sensor measurement is transferred to conventional and the exercisable gap signal of telecommunication by the present embodiment, such as voltage signal or current signal.
Such as, when the employing current vortex sensor above-mentioned gap R1 of detection is as the gap information in sign lubrication channel gap, labyrinth, current vortex sensor can be fixedly mounted on the installed surface of dead axle 2 outer surface, current vortex sensor comprises probe coil and extension cable, rotate the cylindrical form interior surface of axle 1 self as tested metal covering, when distance R1 between tested metal covering and probe changes, the coil impedance of probe coil also changes, the change of coil impedance can be oscillated device perception, cause the change of oscillating voltage amplitude, and this can through detection with the oscillating voltage that distance changes, filtering, linear compensation, the change of voltage (electric current) is changed into after amplifying normalization, it is finally completed mechanical displacement (distance R1) and converts voltage or current signal to.
S230, compares the gap signal of telecommunication with the gap threshold interval preset, if gap value of electrical signals does not fall within gap threshold interval, then triggers Wind turbines and adjusts current operating conditions, so that follow-up gap value of electrical signals falls in gap threshold interval again.
In order to by labyrinth lubrication channel clearance control in the reasonable scope, avoid labyrinth lubrication channel that friction and collision occur, the present embodiment presets a gap threshold interval, this gap threshold interval is lubrication channel gap, labyrinth when being in zone of reasonableness, the reasonable value range corresponding to the value of electrical signals of above-mentioned gap.When the gap signal of telecommunication obtained after distance detection sensor detection and signal conversion falls in this gap threshold interval, then characterize lubrication channel gap, current labyrinth and be in zone of reasonableness, it is not necessary to process；When the gap signal of telecommunication obtained after distance detection sensor detection and signal conversion does not fall within this gap threshold interval, then characterize lubrication channel gap, current labyrinth and be in beyond zone of reasonableness, now respective handling equipment can trigger Wind turbines and adjust current operating conditions, so that the follow-up gap value of electrical signals obtained falls in gap threshold interval again, lubrication channel gap, labyrinth is made to be in zone of reasonableness.
In practical application scene; above-mentioned detector gap information, conversion generate the gap signal of telecommunication and gap threshold interval is compared; the process of adjustment running of wind generating set state is capable of circulation to be carried out, and again falls in gap threshold interval or till the system requirements shutdown of Wind turbines until gap value of electrical signals.
Wherein, zone of reasonableness residing for lubrication channel gap in labyrinth in such scheme can determine that after Theoretical Calculation and Finite Element Simulation Analysis lubrication channel excursion is 3mm to 5mm, and the zone of reasonableness of corresponding distance R1 change is 5mm (lower limit threshold values) to 10mm (upper limit threshold values).In concrete application scenarios, this zone of reasonableness can be converted to voltage (or electric current) signal by fore-lying device, and with above-mentioned as by electric vortex sensor measuring the higher limit of voltage (or electric current) signal of output and lower limit together incoming control centre after changing, the heart carries out signal judgement in the controlling, when measurement variation amount is between 10mm to 5mm, regulated quantity is 0；When measurement variation amount is more than 10mm or less than 5mm, control centre calculates required regulated quantity, and the pitch control device being transferred to Wind turbines carries out becoming oar and regulates.If becoming oar to regulate and cannot meet when requiring, also can carry out rotational speed regulation, power adjustments simultaneously.Concrete operations object and the behavior of Wind turbines adjustment current operating conditions are not construed as limiting by the present embodiment, any one is by changing current running of wind generating set state, and make the running status adjustment that the follow-up gap value of electrical signals obtained falls in gap threshold interval again all can be classified as controlled object, and be not limited to become oar adjustment, variable speed adjustment or Variable power and regulate.
Specifically, in step S220, during by distance detection sensor detection wind-driven generator rotates axle and dead axle shaft clearance information in a plane of vertical centering control axis as monitoring object, corresponding gap threshold interval, for characterizing lubrication channel gap, labyrinth when zone of reasonableness, corresponding electromotor rotates the shaft clearance threshold interval that the gap signal of telecommunication of axle and the dead axle shaft clearance information in a plane of vertical centering control axis is corresponding.
The maintaining method being applied to wind-driven generator labyrinth lubrication channel that the embodiment of the present invention provides, based on distance controlling technology, when labyrinth seal lubrication channel gap increases because of malformation or reduces, implement to automatically control and regulate by changing the running status of Wind turbines, improve the malformation state of Wind turbines vibration and noise reducing, and then ensure that labyrinth seal lubrication channel gap is within zone of reasonableness all the time, prevent dry friction or metal bump, improve fan operation performance.
Further, this programme also can reduce the design rigidity rotating axle or dead axle to a certain extent, reduces construction weight, reduces cost.
The above; being only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, any those familiar with the art is in the technical scope that the invention discloses; change can be readily occurred in or replace, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with described scope of the claims.
Embodiment two
Fig. 3 is the structured flowchart of one embodiment of attending device being applied to wind-driven generator labyrinth lubrication channel provided by the invention, can perform method step as shown in Figure 1.As it is shown on figure 3, this attending device being applied to wind-driven generator labyrinth lubrication channel includes: distance detection sensor 31, signal adapter 32 and controller 33, wherein:
Distance detection sensor 31 is arranged on wind-driven generator, for when wind-driven generator runs, being characterized the gap information in the lubrication channel gap, labyrinth being positioned on wind-driven generator by distance detection sensor detection；Signal adapter 32 is connected with distance detection sensor 31, for gap information is converted into the gap signal of telecommunication；Controller 33 is connected with signal adapter 32 and Wind turbines, for the gap signal of telecommunication is compared with the gap threshold interval preset, if gap value of electrical signals does not fall within gap threshold interval, then trigger Wind turbines and adjust current operating conditions, so that follow-up gap value of electrical signals falls in gap threshold interval.
Further, as shown in figures 4 a and 4b, above-mentioned distance detection sensor is arranged on dead axle 2 outer surface of wind-driven generator, for detecting axle 1 and the dead axle 2 shaft clearance information in a plane of vertical centering control axis of rotating on wind-driven generator.
nullSpecifically，As shown in figures 4 a and 4b，Owing to the outer surface of dead axle 2 and the inner surface (tested metal covering) of rotation axle 1 are cylindrical surface，Therefore the intersection being perpendicular to the outer surface of horizontal axis and the plane comprising current vortex sensor and dead axle 2 and the inner surface of rotation axle 1 is a space circle，And 3 points in known space circle shape，Just space circle equation can be drawn by mathematical algorithm，Namely only the distance R1 that any three places not collinear points are corresponding need to be measured，Just the distance R1 of optional position within the scope of circumference 360 ° can be calculated according to mathematical algorithm，And then obtain the distance R1 higher limit changed within the scope of 360 ° and lower limit，Therefore，As shown in fig 4b，Three distances detection sensors 31 such as current vortex sensor can be adopted，On the outer surface installed surface being arranged in dead axle 2 of any not conllinear，Preferred arrangement is the outer surface that in Fig. 4 b, 3 current vortex sensors are evenly arranged in dead axle 2，Namely distance detection sensor 31 is at least three，And it is arranged on dead axle 2 outer surface of wind-driven generator equidistantly，And in a plane of vertical centering control axis，Or，It is arranged on rotation axle 1 inner surface of wind-driven generator equidistantly，And in a plane of vertical centering control axis.As it is shown in figure 5, be the connection diagram of the attending device being applied to wind-driven generator labyrinth lubrication channel provided by the invention and dead axle.
Alternatively, above-mentioned distance detection sensor 31 includes: the sensor of a kind of or at least two combination in grating sensor, laser sensor, current vortex sensor, capacitance sensor, ultrasonic sensor.
When distance detection sensor 31 is current vortex sensor, corresponding signal adapter 32 can be the fore-lying device 32 ' in Fig. 6, including: agitator 321, testing circuit 322 and the amplifier 323 being sequentially connected with, wherein, current vortex sensor 31 is connected with agitator 321, and amplifier 323 is connected with controller 33.
As shown in Figure 6, each current vortex sensor 31 includes probe 311 (being provided with probe coil in probe), extension cable 312.In detection process, to rotate the cylindrical form interior surface of axle 1 self as tested dignity, when distance R1 between tested metal covering and probe 311 changes, the coil impedance of probe coil also changes, the change of coil impedance causes the change of the oscillating voltage amplitude of agitator 321, and this is with oscillating voltage circuit 322 detection after testing of distance change, filtering, linear compensation is delivered to, after processing, the change changing into voltage (electric current) after amplifying circuit 323 is amplified normalization, mechanical displacement (distance R1) converts voltage to or current signal is delivered to controller 33 and carries out subsequent treatment the most at last.
Further, above-mentioned gap threshold interval, for characterizing lubrication channel gap, labyrinth when zone of reasonableness, corresponding electromotor rotates the shaft clearance threshold interval that the gap signal of telecommunication of axle and the dead axle shaft clearance information in a plane of vertical centering control axis is corresponding.
Further, at least one operation that controller noted above 33 becomes in oar, variable speed, Variable power specifically for triggering Wind turbines to carry out, so that follow-up gap value of electrical signals falls in the gap threshold interval of correspondence.
The attending device being applied to wind-driven generator labyrinth lubrication channel provided by the invention, based on distance controlling technology, when labyrinth seal lubrication channel gap increases because of malformation or reduces, implement to automatically control and regulate by changing the running status of Wind turbines, improve the malformation state of Wind turbines vibration and noise reducing, and then ensure that labyrinth seal lubrication channel gap is within zone of reasonableness all the time, prevent dry friction or metal bump, improve fan operation performance.
Further, this programme also can reduce the design rigidity rotating axle or dead axle to a certain extent, reduces construction weight, reduces cost.
Further, present invention also offers a kind of maintenance system being applied to wind-driven generator labyrinth lubrication channel, including: Wind turbines and the attending device being applied to wind-driven generator labyrinth lubrication channel as above.
Last it is noted that various embodiments above is only in order to illustrate technical scheme, it is not intended to limit；Although the present invention being described in detail with reference to foregoing embodiments, it will be understood by those within the art that: the technical scheme described in foregoing embodiments still can be modified by it, or wherein some or all of technical characteristic is carried out equivalent replacement；And these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technical scheme.
Claims (12)
1. the maintaining method being applied to wind-driven generator labyrinth lubrication channel, it is characterised in that including:
When wind-driven generator runs, characterized the gap information in the lubrication channel gap, labyrinth being positioned on wind-driven generator by distance detection sensor detection；
Described gap information is converted into the gap signal of telecommunication；
The described gap signal of telecommunication is compared with the gap threshold interval preset, if described gap value of electrical signals does not fall within gap threshold interval, then triggers Wind turbines and adjust current operating conditions, so that follow-up described gap value of electrical signals falls in gap threshold interval.
2. method according to claim 1, it is characterised in that described when wind-driven generator runs, characterizes the gap information in the lubrication channel gap, labyrinth being positioned on wind-driven generator by distance detection sensor detection, including:
By distance detection sensor detection wind-driven generator rotates axle and dead axle shaft clearance information in a plane of vertical centering control axis.
3. method according to claim 2, it is characterized in that, described gap threshold interval, for characterizing lubrication channel gap, described labyrinth when zone of reasonableness, corresponding electromotor rotates the shaft clearance threshold interval that the gap signal of telecommunication of axle and the dead axle shaft clearance information in a plane of vertical centering control axis is corresponding.
4. the method according to any one of claim 1-3, it is characterised in that described triggering Wind turbines adjusts current operating conditions, so that follow-up described gap value of electrical signals falls in gap threshold interval, including:
Trigger at least one operation that Wind turbines carries out becoming in oar, variable speed, Variable power, so that follow-up described gap value of electrical signals falls in the described gap threshold interval of correspondence.
5. the attending device being applied to wind-driven generator labyrinth lubrication channel, it is characterised in that described device includes: distance detection sensor, signal adapter and controller,
Described distance detection sensor is arranged on wind-driven generator, for when wind-driven generator runs, being characterized the gap information in the lubrication channel gap, labyrinth being positioned on wind-driven generator by distance detection sensor detection；
Described signal adapter is connected with described distance detection sensor, for described gap information is converted into the gap signal of telecommunication；
Described controller is connected with described signal adapter and Wind turbines, for the described gap signal of telecommunication is compared with the gap threshold interval preset, if described gap value of electrical signals does not fall within gap threshold interval, then trigger Wind turbines and adjust current operating conditions, so that follow-up described gap value of electrical signals falls in gap threshold interval.
6. device according to claim 5, it is characterised in that described distance detection sensor is arranged on the dead axle outer surface of wind-driven generator, for detecting axle and the dead axle shaft clearance information in a plane of vertical centering control axis of rotating on wind-driven generator.
7. device according to claim 6, it is characterized in that, described gap threshold interval, for characterizing lubrication channel gap, described labyrinth when zone of reasonableness, corresponding electromotor rotates the shaft clearance threshold interval that the gap signal of telecommunication of axle and the dead axle shaft clearance information in a plane of vertical centering control axis is corresponding.
8. the device according to any one of claim 5-7, it is characterized in that, the at least one operation that described controller becomes in oar, variable speed, Variable power specifically for triggering Wind turbines to carry out, so that follow-up described gap value of electrical signals falls in the described gap threshold interval of correspondence.
9. the device according to any one of claim 5-7, it is characterized in that, described distance detection sensor includes: the sensor of a kind of or at least two combination in grating sensor, laser sensor, current vortex sensor, capacitance sensor, ultrasonic sensor.
10. the device according to any one of claim 5-7, it is characterized in that, described distance detection sensor is at least three, and it is arranged on the dead axle outer surface of described wind-driven generator equidistantly, and in a plane of vertical centering control axis, or, it is arranged on the rotation axle inner surface of described wind-driven generator equidistantly, and in a plane of vertical centering control axis.
11. device according to claim 9, it is characterized in that, it is current vortex sensor at described distance detection sensor, corresponding signal adapter is fore-lying device, including: agitator, testing circuit and the amplifier being sequentially connected with, wherein, described current vortex sensor is connected with described agitator, and described amplifier is connected with described controller.
12. the maintenance system being applied to wind-driven generator labyrinth lubrication channel, it is characterised in that including: the attending device being applied to wind-driven generator labyrinth lubrication channel according to any one of Wind turbines and as above claim 5-11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610109438.2A CN105781907B (en) | 2016-02-26 | 2016-02-26 | Maintenance method, device and system applied to labyrinth lubrication channel of wind driven generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610109438.2A CN105781907B (en) | 2016-02-26 | 2016-02-26 | Maintenance method, device and system applied to labyrinth lubrication channel of wind driven generator |
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| Publication Number | Publication Date |
|---|---|
| CN105781907A true CN105781907A (en) | 2016-07-20 |
| CN105781907B CN105781907B (en) | 2019-04-23 |
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| CN201610109438.2A Active CN105781907B (en) | 2016-02-26 | 2016-02-26 | Maintenance method, device and system applied to labyrinth lubrication channel of wind driven generator |
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Cited By (3)
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| CN108418351A (en) * | 2018-01-12 | 2018-08-17 | 远景能源（江苏）有限公司 | Wind-driven generator air gap real-time detecting system and method |
| CN114576068A (en) * | 2022-03-21 | 2022-06-03 | 浙江理工大学 | Water turbine convenient for real-time state monitoring |
| CN115234819A (en) * | 2022-07-20 | 2022-10-25 | 中铁工程装备集团有限公司 | Heading machine main drive sealing grease follow-up control system and control method |
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| 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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