CN106908141A - The monitoring of one kind lubrication and diagnostic method and device - Google Patents
The monitoring of one kind lubrication and diagnostic method and device Download PDFInfo
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- CN106908141A CN106908141A CN201710051163.6A CN201710051163A CN106908141A CN 106908141 A CN106908141 A CN 106908141A CN 201710051163 A CN201710051163 A CN 201710051163A CN 106908141 A CN106908141 A CN 106908141A
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- voltage signal
- bearing
- lubrication
- rotating machinery
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H17/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves, not provided for in the preceding groups
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- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
- Sliding-Contact Bearings (AREA)
Abstract
The invention discloses the monitoring of one kind lubrication and diagnostic method, the lubrication trigger value of power station auxiliary rotating machinery bearing is preset, the method includes：Receiving bearing rotates the voltage signal that the audio signal for producing is converted into；The voltage signal of collection process and obtains voltage signal weighted average；The voltage signal weighted average is compared with lubrication trigger value, when the voltage signal weighted average exceedes lubrication trigger value, it is determined that bearing needs to fill lubricating oil.The invention also discloses the monitoring of one kind lubrication and diagnostic device.Using the present invention rotating machinery bearing can be protected not frayed.
Description
Technical field
The present invention relates to field of measuring technique, more particularly to a kind of lubrication is monitored and diagnostic method and device.
Background technology
Lubrication：Lubrication is the important content of tribology research.The Frotteurism for improving friction pair is subtracted with reducing frictional resistance
The technical measures of slow abrasion.The general purpose that lubrication is reached by lubricant.In addition, lubricant also has antirust, vibration damping, close
The effects such as envelope, transmission power.Making full use of the lubrication technology in modern times can significantly improve the performance of machine and the life-span and reduce
Energy resource consumption.
Refueled for power station auxiliary rotating machinery, at present simply according to cycle and artificial experience to scene, use nozzle
Or fuel charger, the control of volume read-out is carried out according to liquid level, it is impossible to the lubricants capacity of precognition and control practice sites.Cannot ensure to add
Oil is enough, it is ensured that equipment is normally lubricated, and oil supply process is monitored, and accomplishes refueling process visual, controllable.
The content of the invention
It is an object of the invention to provide the monitoring of one kind lubrication and diagnostic method and device, rotating machinery bearing can be protected
It is not frayed.
For achieving the above object, the invention provides the monitoring of one kind lubrication and diagnostic method, power station auxiliary is preset
The lubrication trigger value of rotating machinery bearing, the method includes：
Receiving bearing rotates the voltage signal that the audio signal for producing is converted into；
The voltage signal of collection process and obtains voltage signal weighted average；
The voltage signal weighted average is compared with lubrication trigger value, when the voltage signal weighted average
More than lubrication trigger value, it is determined that bearing needs to fill lubricating oil.
For achieving the above object, present invention also offers the monitoring of one kind lubrication and diagnostic method, thermal power plant is preset auxiliary
Voltage signal bound scope during machine rotating machinery bearing normal rotation；The method includes：
After the audio signal that receiving bearing rotation is produced is converted into voltage signal, by the time domain beamformer that treatment is obtained；
At the abscissa record monitoring time point of the time domain beamformer, ordinate records the voltage signal values at each time point；
According to the corresponding time period on time domain beamformer, determine whether voltage signal values are normal more than bearing in the time period
Voltage signal bound scope during rotation, if it exceeds, it is determined that bearing needs to fill lubricating oil.
For achieving the above object, present invention also offers the monitoring of one kind lubrication and diagnostic device, the device includes：
Memory cell, presets the lubrication trigger value of power station auxiliary rotating machinery bearing；
Receiving unit, receiving bearing rotates the voltage signal that the audio signal for producing is converted into；
Processing unit, the voltage signal of collection process obtains voltage signal weighted average；By voltage letter
Number weighted average is compared with lubrication trigger value, when the voltage signal weighted average exceedes lubrication trigger value, then really
Dead axle holds to be needed to fill lubricating oil.
For achieving the above object, present invention also offers the monitoring of one kind lubrication and diagnostic device, the device includes：
Memory cell, presets voltage signal bound scope during power station auxiliary rotating machinery bearing normal rotation；
Receiving unit, receiving bearing rotate produce audio signal be converted into voltage signal after, by treatment obtain when
Domain waveform figure；At the abscissa record monitoring time point of the time domain beamformer, ordinate records the voltage signal at each time point
Value；
Processing unit, according to the corresponding time period on time domain beamformer, determines whether voltage signal values surpass in the time period
Voltage signal bound scope during bearing normal rotation is crossed, if it exceeds, it is determined that bearing needs to fill lubricating oil.
In sum, the embodiment of the present invention lubrication monitoring and diagnostic method and device, can real-time monitoring thermal power plant it is auxiliary
Audio case when machine rotating machinery bearing is rotated, when bearing needs filling lubricating oil, and alarm, it is to avoid because lacking
Oil, the subsidiary engine that is improper and causing that refuels are damaged, and improve the security reliability of equipment.
Brief description of the drawings
Fig. 1 is the schematic flow sheet that the embodiment of the present invention one lubricates monitoring and diagnostic method.
Fig. 2 is the structural representation that the embodiment of the present invention lubricates monitoring and diagnostic device.
Fig. 3 is the schematic flow sheet that the embodiment of the present invention two lubricates monitoring and diagnostic method.
Fig. 4 is the schematic diagram of the time domain beamformer of the embodiment of the present invention two.
Specific embodiment
To make the objects, technical solutions and advantages of the present invention become more apparent, develop simultaneously embodiment referring to the drawings, right
Scheme of the present invention is described in further detail.
Power station auxiliary rotating machinery has bearing, and bearing is covered by lubricating oil, and lubricating oil film, profit are formed in bearing surface
Lubricating oil absorbs the heat that bearing ball and seat ring friction are produced, if bearing lubrication is good, sound and vibration momentum is very small；But if profit
Synovial membrane is destroyed, even if bearing wear is not serious, vibratory output proportional can also increase, and this sound and vibration momentum can be examined by ultrasound
Survey instrument and measure tracking, bearing lubrication deficiency shows as the increase of sound and vibration momentum, shaken relative to the bearing under good lubrication state
Dynamic noise aggravation.On the other hand, over-lubrication will cause considerable wear to bearing.Protection axle is intended that using excessive lubricating oil
Hold, as a result but damage bearing.Over-lubrication shortens normal service life by damage axle envelope, to bearing build-up of pressure.The present invention will
At the lubricant charging point that the probe of ultrasound measuring instrument is placed near power station auxiliary rotating machinery bearing, visited in real time by probe
Measure bearing and rotate the audio signal for producing, and processor by detector converts audio signals into voltage signal.Profit
Sliding monitoring and diagnostic device can intuitively provide the lubrication state of bearing by the real-time analysis to voltage signal, and prompting is carried out
Corresponding treatment.
Conventional prior art adds the situation of lubricating oil to lack assessment to power station auxiliary rotating machinery, without the hand for quantifying
Section.The present invention is engaged by ultrasound measuring instrument and lubrication monitoring and diagnostic device, and ultrasound measuring instrument carries out live signal collection,
Lubrication monitoring and diagnostic device carry out signal analysis, and provide current device lubricating oil diagnostic result, it is to avoid because oil starvation, plus
The subsidiary engine that oil is improper and causes is damaged, and improves the security reliability of equipment.
Embodiment one
The schematic flow sheet of the monitoring of the lubrication of the embodiment of the present invention one and diagnostic method is as shown in figure 1, comprise the following steps：
First, the lubrication trigger value of power station auxiliary rotating machinery bearing is preset；
Step 11, receiving bearing rotate the voltage signal that the audio signal for producing is converted into；
Wherein, ultrasound measuring instrument detection obtains the bearing and rotates the audio signal for producing, and the audio signal is turned
Change voltage signal into.
Step 12, the voltage signal of collection process obtain voltage signal weighted average；
Step 13, by the voltage signal weighted average with lubrication trigger value be compared, when the voltage signal adds
Weight average value exceedes lubrication trigger value, it is determined that bearing needs to fill lubricating oil.
Wherein, according to the difference of power station auxiliary rotating machinery species, the lubrication trigger value of every kind of rotating machinery bearing is simultaneously
Differ；Voltage signal a reference value during default power station auxiliary rotating machinery bearing normal rotation；Every kind of rotating machinery bearing
Voltage signal a reference value of lubrication trigger value when being equal to the bearing normal rotation plus according to the difference of rotating machinery species
And the voltage signal incrementss for determining.
Further, the method also includes：During lubricating oil is filled, by the voltage signal weighted average and axle
Voltage signal a reference value when holding normal rotation is compared, when the voltage signal weighted average is equal to bearing normal rotation
When voltage signal a reference value, it is determined that bearing filling lubricating oil finish.
Further, the method also includes：The rejection value of default power station auxiliary rotating machinery bearing；By voltage letter
Number weighted average is compared with the rejection value of bearing, when the voltage signal weighted average exceedes the rejection value of bearing,
Then determine that the bearing is scrapped.
Based on same inventive concept, the present invention also proposes a kind of lubrication monitoring and diagnostic device, structural representation such as Fig. 2
Shown, the device includes：
Memory cell 201, presets the lubrication trigger value of power station auxiliary rotating machinery bearing；
Receiving unit 202, receiving bearing rotates the voltage signal that the audio signal for producing is converted into；
Processing unit 203, the voltage signal of collection process obtains voltage signal weighted average；By the voltage
Signal weighting average value is compared with lubrication trigger value, when the voltage signal weighted average exceedes lubrication trigger value, then
Determine that bearing needs to fill lubricating oil.
According to the difference of power station auxiliary rotating machinery species, the lubrication trigger value of every kind of rotating machinery bearing not phase
Together；
The memory cell 201, also presets voltage signal benchmark during power station auxiliary rotating machinery bearing normal rotation
Value；Voltage signal a reference value when the lubrication trigger value of every kind of rotating machinery bearing is equal to the bearing normal rotation adds basis
Rotating machinery species difference and determine voltage signal incrementss.
During lubricating oil is filled, the processing unit 203 is additionally operable to the voltage signal weighted average and axle
Voltage signal a reference value when holding normal rotation is compared, when the voltage signal weighted average is equal to bearing normal rotation
When voltage signal a reference value, it is determined that bearing filling lubricating oil finish.
The memory cell 201, also presets the rejection value of power station auxiliary rotating machinery bearing；The processing unit 203,
It is additionally operable to be compared the voltage signal weighted average and the rejection value of bearing, when the voltage signal weighted average
More than the rejection value of bearing, it is determined that the bearing is scrapped.
It is the clear explanation present invention, concrete scene is set forth below and illustrates.
At the lubricant charging point that the probe of ultrasound measuring instrument is placed near power station auxiliary rotating machinery bearing, the position
Put the state of wear that can detect bearing completely.Bearing is obtained by real-time detection of popping one's head in and rotates the audio signal for producing, and led to
The processor for crossing detector converts audio signals into voltage signal.
The audio signal that ultrasound measuring instrument real-time detection bearing is produced, and convert audio signals into voltage signal.Lubrication
Monitoring and diagnostic device to the voltage signal of each time period process and obtain voltage signal weighted average.In the present embodiment
Assuming that the voltage signal that every 10s is collected process obtaining voltage signal weighted average.
Electricity during power station auxiliary rotating machinery bearing normal rotation is preset in the monitoring of the present embodiment lubrication and diagnostic device
Pressure signal criterion value is 100 microvolts (uV), when voltage signal of the voltage signal weighted average relative to a reference value 100uV increases
When amount is more than 8uV, i.e. when voltage signal weighted average exceedes lubrication trigger value 100+8=108uV, bearing is pointed out to need profit
It is sliding.When voltage signal incrementss of the voltage signal weighted average relative to a reference value 100uV are more than 35uV, i.e. voltage is believed
When number weighted average exceedes rejection value 100+35=135uV, bearing is pointed out closely to scrap.So as to ensure that it is good that bearing is obtained
Lubrication.
When filling lubricating oil is needed, lubrication adapter can be placed at rotating machinery lubricant charging point, lubrication is suitable
Orchestration is used to connect rotating machinery, grease gun and ultrasound detection instrument probe.Now, ultrasound measuring instrument real-time detection bearing is produced
Audio signal, and convert audio signals into voltage signal.Grease gun is lubricated the injection of oil, with lubricant target
Realize, bearing audio improved, the voltage signal values that lubrication monitoring and diagnostic device are collected are gradually reduced, when voltage signal plus
Weight average value be equal to bearing normal rotation when voltage signal a reference value 100uV when, then point out bearing filling lubricating oil finish.From
And prevent bearing lubrication excessive.
Embodiment two
The schematic flow sheet of the monitoring of the lubrication of the embodiment of the present invention two and diagnostic method is as shown in figure 3, comprise the following steps：
First, voltage signal bound scope during power station auxiliary rotating machinery bearing normal rotation is preset；
After the audio signal that step 31, receiving bearing rotation are produced is converted into voltage signal, by the time domain that treatment is obtained
Oscillogram；At the abscissa record monitoring time point of the time domain beamformer, ordinate records the voltage signal values at each time point；
Step 32, according to the corresponding time period on time domain beamformer, determine whether voltage signal values exceed in the time period
Voltage signal bound scope during bearing normal rotation, if it exceeds, it is determined that bearing needs to fill lubricating oil.
Further, during lubricating oil is filled, the method also includes：According to the corresponding time on time domain beamformer
Section, voltage signal bound scope when determining that whether voltage signal values are more than bearing normal rotation in the time period, if not
Exceed, it is determined that bearing filling lubricating oil is finished.
Based on same inventive concept, the present invention also proposes a kind of lubrication monitoring and diagnostic device, and structural representation is still
As shown in Fig. 2 the device includes：
Memory cell 201, presets voltage signal bound scope during power station auxiliary rotating machinery bearing normal rotation；
Receiving unit 202, after the audio signal that receiving bearing rotation is produced is converted into voltage signal, obtains by treatment
Time domain beamformer；At the abscissa record monitoring time point of the time domain beamformer, ordinate records the voltage letter at each time point
Number value；
Processing unit 203, according to the corresponding time period on time domain beamformer, determines in the time period whether is voltage signal values
Voltage signal bound scope during more than bearing normal rotation, if it exceeds, it is determined that bearing needs to fill lubricating oil.
During lubricating oil is filled, the processing unit 203 was additionally operable to according to the corresponding time on time domain beamformer
Section, voltage signal bound scope when determining that whether voltage signal values are more than bearing normal rotation in the time period, if not
Exceed, it is determined that bearing filling lubricating oil is finished.
It is the clear explanation present invention, concrete scene is set forth below and illustrates.
Fig. 4 is the schematic diagram of the time domain beamformer of the embodiment of the present invention two.The abscissa record monitoring time of time domain beamformer
Point, ordinate records the voltage signal values at each time point.Lubrication monitoring and diagnostic device are carried out according to the time domain beamformer of Fig. 4
Analysis, within the time period of 0-3S, voltage signal values exceed voltage signal bound scope during bearing normal rotation, point out axle
Holding needs lubrication.Within the time period of 3-18S, voltage signal values are no more than voltage signal bound model during bearing normal rotation
Enclose, then point out bearing filling lubricating oil to finish.So as to prevent bearing lubrication excessive.
To sum up, because bearing has lubricating oil to cover, bearing surface formed lubricating oil film, bearing in rotation process, with
The consumption of oil film, bearing can wear and tear, and reflected onto the sound and vibration momentum for sending, that is, reflected in the power of audio signal.When
When bearing needs filling lubricating oil, audio signal is very strong, and with the injection of lubricating oil, audio signal gradually dies down.The present invention is logical
Cross embodiment one and the two ways analysis axis of embodiment two forward the audio signal of movable property life, it is strong and weak with audio signal,
Judge when bearing needs to fill lubricating oil, how to ensure suitable lubricants capacity, rotated so as to effectively improve power station auxiliary
The security reliability of equipment.
The beneficial effects of the present invention are：
First, Data Collection, analysis, diagnosis are realized by lubricating monitoring and diagnostic device, finally provides whole rotating machinery
Lubrication circumstances.
2nd, thermal power plant's lubricating management is strengthened, by stock's early warning, the full mistake that oiling is changed oil, oil product enters factory, oil product is scrapped etc.
Range monitoring gets up.The reliability of rotating machinery is improved, extends the service life of key components and parts, reduce rotating machinery use and maintenance
Expense, reduces rotating machinery failure, finally increases economic efficiency.So, we must be set up comprehensive management process.
3rd, the all-round excellent lubrication optimization control of equipment is realized, makes equipment that abrasion can be effectively reduced in installation and use, reduction disappears
Consumption, extension device maintenance cycle and service life, reach energy-conservation and the purpose increased economic efficiency.It is final to reduce operation and repair
The labour intensity of personnel, improves unit operation level.
The above, only presently preferred embodiments of the present invention is not intended to limit the scope of the present invention.It is all
Within the spirit and principles in the present invention, any modification, equivalent substitution and improvements made etc. should be included in protection of the invention
Within the scope of.
Claims (13)
1. a kind of lubrication monitoring and diagnostic method, preset the lubrication trigger value of power station auxiliary rotating machinery bearing, and its feature exists
In the method includes：
Receiving bearing rotates the voltage signal that the audio signal for producing is converted into；
The voltage signal of collection process and obtains voltage signal weighted average；
The voltage signal weighted average is compared with lubrication trigger value, when the voltage signal weighted average exceedes
Lubrication trigger value, it is determined that bearing needs to fill lubricating oil.
2. the method for claim 1, it is characterised in that every kind of according to the difference of power station auxiliary rotating machinery species
The lubrication trigger value of rotating machinery bearing is simultaneously differed；
The method is further included：Voltage signal a reference value during default power station auxiliary rotating machinery bearing normal rotation；Often
Voltage signal a reference value when the lubrication trigger value for planting rotating machinery bearing is equal to the bearing normal rotation is added according to rotation
Device category difference and determine voltage signal incrementss.
3. method as claimed in claim 2, it is characterised in that during lubricating oil is filled, the method also includes：Will be described
Voltage signal a reference value when voltage signal weighted average is with bearing normal rotation is compared, when voltage signal weighting
Average value is equal to voltage signal a reference value during bearing normal rotation, it is determined that bearing filling lubricating oil is finished.
4. the method for claim 1, it is characterised in that the method also includes：Default power station auxiliary rotating machinery axle
The rejection value for holding；
The voltage signal weighted average and the rejection value of bearing are compared, when the voltage signal weighted average is super
Cross the rejection value of bearing, it is determined that the bearing is scrapped.
5. the method for claim 1, it is characterised in that ultrasound measuring instrument detection obtains the bearing and rotates the sound for producing
Frequency signal, and the audio signal is converted into voltage signal.
6. a kind of lubrication is monitored and diagnostic method, on voltage signal when presetting power station auxiliary rotating machinery bearing normal rotation
Lower range；Characterized in that, the method includes：
After the audio signal that receiving bearing rotation is produced is converted into voltage signal, by the time domain beamformer that treatment is obtained；It is described
At the abscissa record monitoring time point of time domain beamformer, ordinate records the voltage signal values at each time point；
According to the corresponding time period on time domain beamformer, determine whether voltage signal values exceed bearing normal rotation in the time period
When voltage signal bound scope, if it exceeds, it is determined that bearing need fill lubricating oil.
7. method as claimed in claim 6, it is characterised in that during lubricating oil is filled, the method also includes：According to when
Corresponding time period on domain waveform figure, voltage when determining whether voltage signal values exceed bearing normal rotation in the time period is believed
Number bound scope, if be no more than, it is determined that bearing filling lubricating oil is finished.
8. a kind of lubrication is monitored and diagnostic device, and the device includes：
Memory cell, presets the lubrication trigger value of power station auxiliary rotating machinery bearing；
Receiving unit, receiving bearing rotates the voltage signal that the audio signal for producing is converted into；
Processing unit, the voltage signal of collection process obtains voltage signal weighted average；The voltage signal is added
Weight average value is compared with lubrication trigger value, when the voltage signal weighted average exceedes lubrication trigger value, it is determined that axle
Holding needs to fill lubricating oil.
9. device as claimed in claim 8, it is characterised in that every kind of according to the difference of power station auxiliary rotating machinery species
The lubrication trigger value of rotating machinery bearing is simultaneously differed；
The memory cell, also presets voltage signal a reference value during power station auxiliary rotating machinery bearing normal rotation；It is every kind of
Voltage signal a reference value when the lubrication trigger value of rotating machinery bearing is equal to the bearing normal rotation is added and set according to rotation
The class that makes preparations for sowing difference and determine voltage signal incrementss.
10. device as claimed in claim 9, it is characterised in that during lubricating oil is filled,
The processing unit, is additionally operable to voltage signal benchmark during by the voltage signal weighted average and bearing normal rotation
Value is compared, the voltage signal a reference value when the voltage signal weighted average is equal to bearing normal rotation, it is determined that
Bearing filling lubricating oil is finished.
11. devices as claimed in claim 8, it is characterised in that the memory cell, also preset power station auxiliary rotating machinery
The rejection value of bearing；
The processing unit, is additionally operable to be compared the voltage signal weighted average and the rejection value of bearing, when described
Voltage signal weighted average exceedes the rejection value of bearing, it is determined that the bearing is scrapped.
A kind of 12. lubrication monitorings and diagnostic device, the device include：
Memory cell, presets voltage signal bound scope during power station auxiliary rotating machinery bearing normal rotation；
Receiving unit, after the audio signal that receiving bearing rotation is produced is converted into voltage signal, by the time domain ripple that treatment is obtained
Shape figure；At the abscissa record monitoring time point of the time domain beamformer, ordinate records the voltage signal values at each time point；
Processing unit, according to the corresponding time period on time domain beamformer, determines whether voltage signal values exceed axle in the time period
Voltage signal bound scope during normal rotation is held, if it exceeds, it is determined that bearing needs to fill lubricating oil.
13. devices as claimed in claim 12, it is characterised in that during lubricating oil is filled,
The processing unit, is additionally operable to, according to the corresponding time period on time domain beamformer, determine voltage signal values in the time period
Whether voltage signal bound scope during bearing normal rotation is exceeded, if be no more than, it is determined that bearing filling lubricating oil is complete
Finish.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710051163.6A CN106908141B (en) | 2017-01-20 | 2017-01-20 | A kind of monitoring of lubrication and diagnostic method and device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710051163.6A CN106908141B (en) | 2017-01-20 | 2017-01-20 | A kind of monitoring of lubrication and diagnostic method and device |
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| CN106908141A true CN106908141A (en) | 2017-06-30 |
| CN106908141B CN106908141B (en) | 2019-10-15 |
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| SE426733B (en) * | 1979-11-09 | 1983-02-07 | Spm Instr Ab | Arrangement for lubrication-on-demand of antifriction bearings |
| JPH06101713A (en) * | 1991-04-12 | 1994-04-12 | Nippon Cement Co Ltd | Main bearing lubricating device for ball mill |
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|---|---|
| CN106908141B (en) | 2019-10-15 |
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Effective date of registration: 20180531 Address after: 100085 5 floor, Lou Zhiyuan building, No. 2, 28 hospital, Sixth Street, Haidian District, Beijing. Applicant after: Beijing Bicotest Technology Co., Ltd. Applicant after: Huadian Inner Mongolia Energy Co., Ltd. Address before: 100085 5 floor, Lou Zhiyuan building, No. 2, 28 hospital, Sixth Street, Haidian District, Beijing. Applicant before: Beijing Bicotest Technology Co., Ltd. |
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