CN201837574U - Wind power generation on-line oil analysis device based on magnetic conductivity - Google Patents
Wind power generation on-line oil analysis device based on magnetic conductivity Download PDFInfo
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- CN201837574U CN201837574U CN2010205969659U CN201020596965U CN201837574U CN 201837574 U CN201837574 U CN 201837574U CN 2010205969659 U CN2010205969659 U CN 2010205969659U CN 201020596965 U CN201020596965 U CN 201020596965U CN 201837574 U CN201837574 U CN 201837574U
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Abstract
The utility model discloses a wind power generation on-line oil analysis device based on magnetic conductivity, which comprises an oil sensor, a detection circuit device, a microprocessor and a data displaying and storing device. The wind power generation on-line oil analysis device is characterized in that a coil of the sensor generates a high-intensity magnetic field when lubricating oil passes through the oil sensor; and different particles and particles with different densities in the oil can cause the change of the magnetic conductivity of the lubricating oil in the magnetic field, so that the sensing coil generates induced electromagnetic force, further change information of ferromagnetic abrasive grains can be obtained and information of wear degree of a fan gearbox bearing can be obtained. The device can be used for quantitatively analyzing the change of the quality of oil on line in real time and estimating the degree of the fan gearbox bearing to obtain the long-term operation status data of a wind power unit, and shrortens the maintenance time and prolongs the service life of the equipment.
Description
Technical field
The utility model belongs to commercial unit detecting instrument field, be particularly related to the amount of abrasive that a kind of real-time online detects the ferromagnetic particle in the blower fan box bearing fluid, collect the contained wear particle of lubricating oil for information about, the gear case operation conditions is carried out the diagnosis of analysis and judgement and wear-out failure, the storage of the line data of going forward side by side measurement mechanism relatively.
Background technology
Monitoring has become one of indispensable means in most modern industry maintenances based on the machine performance of oil analysis, and the research of the monitoring of equipment state and fault diagnosis, rubbing wear mechanism, judge lubricating system pollution situation, formulate correct drain period etc. and obtain to use widely aspect several.
Industry member mainly adopts the oil analysis method of traditional laboratory off-line at present, regular collection oil sample, send the laboratory to carry out conventional physico-chemical analysis and judge the quality state of fluid and the abrasion condition of relevant machinery, the advantage of this method is a plurality of physical and chemical parameters that can obtain fluid, as viscosity, moisture, acidity and mechanical impurity etc., and according to the quality that can judge fluid more accurately and mechanical abrasion condition, shortcoming is the equipment price costliness, and the result of measurement has bigger hysteresis quality.
In recent years, portable fluid surveying instrument development is swift and violent, finely overcome laboratory off-line analysis method cost height, complicated operation, the deficiency that measurement result lags behind can be carried, and in-site measurement and scene go out the result, portable fluid surveying instrument comprises portable oil viscosity instrument, ferrograph, grain count instrument etc., but these instruments are not accomplished on-line monitoring truly.
Compare with above dual mode, overcome laboratory off-line analysis cost height based on the online oil analysis device of the wind-force of magnetic permeability, complicated operation and portable fluid surveying instrument can not really be implemented in the shortcoming of line analysis.
Online blower fan oil liquid monitoring; it is the mechanical operating parameters of monitoring wind power generating set by the wear particle in the on-line analysis fan bearing; understand the running status of complete machine; prediction is with the fault that takes place; or adopt remedial measures and avoid the generation of destructive malfunction and related fault; guarantee unit safety; or can be according to weather; equipment and personnel's situation are formulated corresponding maintenance schedule; thereby reduction maintenance cost; reduce stop time, for the crucial mechanical part such as the gear case of wind power generating set; monitoring running states such as generator main bearing have important and practical meanings and economic worth.
At present to the existing multiple technologies of bearing state monitoring, vibration monitoring for example, acoustic emission monitor(ing), wear monitoring etc., these technology are all successfully used under certain occasion, but the oil liquid abrasive grain monitoring is the most effective, go to find that with vibration monitoring fault often lags in wear monitoring, the method of acoustic emission can be distinguished the bubble in the lubricating oil, water droplet and particle, but technical difficulty is the installation of sensor, the vibration interference that the selection of ultrasonic frequency and machine operation are brought, the on-line monitoring of oil liquid abrasive grain is mainly with the size of abrasive particle, quantity, material, surface topography is as main monitoring parameter, utilize electromagnetic method to detect valuable abrasive particle, estimate the degree of impairment of bearing, the most serious reason of damage of the bearing is the bulky grain wearing and tearing, and can it be detected, and good effect is arranged based on the analytical approach of the online oil liquid abrasive grain of wind-force of magnetic permeability.
Chinese patent ZL03236292.7 (a kind of device of accurate measurement fluid iron amount, authorization date on January 14th, 2004) a kind of method of utilizing permanent magnet absorption ferromagnetism abrasive particle to measure amount of abrasive then by electronic balance of report, the advantage of this instrument is simple to operate, easy for installation, cost is lower, and that shortcoming is a remolding sensitivity is lower, insensitive to little abrasive particle, Chinese patent application number 200620167523.6 (ferrograph analyzers, November 28 2007 Granted publication day) then be to utilize the method for optical detection to measure ferromagnetic abrasive particle, the advantage of this method is the undersized abrasive particle of energy measurement, and can provide the concentration of abrasive particle and the information of big or small two aspects, but the method for optical measurement is subjected to the influence of the pollution level of fluid and other impurity content bigger, can not distinguish particle and bubble in the fluid, easily erroneous judgement, ferrograph is mainly done qualitative analysis to the ferromagnetism abrasive particle in the fluid, and the error of quantitative test is bigger.
Above measuring method is because the restriction of measuring method can only detect undersized particle, and sensitivity is all lower, aspect reliability and accuracy, there is defective in various degree, therefore can realizes that the instrument of big abrasive particle on-line monitoring has vast market prospect in actual applications.
Summary of the invention
The purpose of this utility model is to provide a kind of wind-power electricity generation based on magnetic permeability online oil analysis device, this device is to measure the size and the type of the ferromagnetism abrasive particle in the fluid, and can obtain ferromagnetic and the relevant material of nonferromagnetic material and the information of concentration thereof, especially for the metallic particles about 100 μ m higher sensitivity is arranged, in addition, this device volume is little, price is low, the convenient installation, the storage that can carry out data shows, and can Realtime Alerts, use having aspect plant equipment status monitoring and the fault diagnosis widely.
The pick-up unit that the utility model proposes comprises: the fluid sensor, the testing circuit device, microprocessor and data presentation and memory storage, it is characterized in that the fluid sensor is installed in the middle of the oil circuit of blower fan, when fluid flows through the fluid sensor of being made up of three coils, can cause the magnetic permeability generation difference of medium in two lateral coils, produce unbalance character voltage signal, the testing circuit device links to each other with sensor to carry out the amplification of signal, and three road signals are gathered, this three road signal is respectively the reference signal through primary coil, the signal of process secondary coil when the signal of process secondary coil and process were amplified when process was not amplified, signal is through bandpass filter, A D sampling, and signal outputed to microprocessor, and the device that carries out data presentation and storage.
Measuring principle of the present utility model is as follows: lubricating oil is done flowing of low speed or high speed in oil circuit, can produce high-intensity magnetic field during through the coil in the sensor, the existence of the different sizes and the particle of concentration can cause the variation that is in the lubricating oil magnetic permeability among the magnetic field, and this variation must change the magnetic flux in original magnetic field, produce unbalanced signal, the size and the surface area of this signal and ferromagnetic particle are proportional.
The employed fluid sensor of the utility model is made of the pipe of three groups of coils and magnetic-lag, with both sides around to opposite symmetric coil as primary coil, middle one group of coil is a secondary coil, two groups of coils of both sides are driven by high-frequency ac power, and differential concatenation, three groups of coils are enclosed within on the same magnetic-lag skeleton.
Three groups of coils of the employed fluid sensor of the utility model are made of the coil rack of copper enameled wire around plastic material, wherein the number of primary turns of both sides is identical with the line footpath, the number of turn of secondary coil and line directly will directly come to determine according to the number of turn and the line of primary coil, the both sides primary coil equates with the distance of secondary coil, and this distance is influential to the sensitivity of sensor, and pipe adopts that thermal expansivity is little, moisture resistance good, the plexi-glass tubular of the magnetic-lag of certain intensity is arranged.
The employed testing circuit device of the utility model comprises reference signal circuit, differential amplifier circuit, bandpass filter and analog to digital conversion circuit, the reference signal circuit provides reference signal for differential amplifier circuit, this reference signal is adjustable, be used for calibrating the fluid sensor and do not have particle through out-of-date residual signals, when differential amplifier circuit is used for amplifying ferromagnetic particle through sensor, the variation of signal, carry out filtering with bandpass filter, reject unnecessary frequency content, carry out the collection of signal then.
Microprocessor in this device uses DSP and single-chip microcomputer, and DSP is mainly used in Signal Processing, the storage of data and time sequence control, single-chip microcomputer is as main frame, DSP is as slave, and main frame can be controlled resetting of slave, operation and hang-up, in addition, single-chip microcomputer can also compare and measure value and predefined alarming value and send alerting signal, and measurement result can show on LCD, and store in the storer of DSP inside, keyboard is accepted user's input instruction by Single-chip Controlling.
Description of drawings
Accompanying drawing 1 is sensor and the system processor system diagram of the utility model based on the online oil analysis device of the wind-power electricity generation of magnetic permeability;
Accompanying drawing 2 is the utility model block diagrams of system based on the online oil analysis device of the wind-power electricity generation of magnetic permeability;
Accompanying drawing 3 is the utility model workflow diagrams based on the online oil analysis device of the wind-power electricity generation of magnetic permeability;
Accompanying drawing 4 is the utility model reference signal and differential amplifier circuit figure based on the online oil analysis device of the wind-power electricity generation of magnetic permeability;
Accompanying drawing 5 is the utility model AD7865 and TMS320LF2407A interface circuit figure based on the online oil analysis device of the wind-power electricity generation of magnetic permeability;
Embodiment
Below in conjunction with accompanying drawing and enforcement the utility model is described in further detail.
Accompanying drawing 1 is sensor and the system processor system diagram of the utility model based on the online oil analysis device of the wind-power electricity generation of magnetic permeability, and wherein 1 is perspex bar, the 2nd, and secondary coil, the 3rd, primary coil, the 4th, system processor, the 5th, fluid, the 6th, ac signal which.
Accompanying drawing 2 is the utility model block diagrams of system based on the online oil analysis device of the wind-power electricity generation of magnetic permeability, and wherein 1 is DSP, the 2nd, and single-chip microcomputer, the 3rd, ac signal which, the 4th, fluid, the 5th, fluid sensor, the 6th, reference signal circuit, the 7th, differential amplifier circuit, the 8th, bandpass filter, the 9th, A the D sample circuit, the 10th, warning device, the 11st, liquid crystal indicator, the 12nd, keyboard, the 13rd, storer, the 14th, power module, except that 3,4,5, remainder all belongs to the system processor part.
In the accompanying drawing 2, DSP1 and single-chip microcomputer 2, A the D sample circuit, storer links to each other, be used to gather the measurement data row operation of going forward side by side, carry out the storage of data simultaneously, fluid 1 is lubricating oil, object for the total system analysis, ac signal which 3 provides initial signal source for fluid sensor 5 and reference signal circuit 6, fluid sensor 5 links to each other with differential amplifier 7 with reference signal circuit 6, input end for differential amplifier 7,7 pairs of signals of differential amplifier carry out difference and amplify, bandpass filter 8 links to each other with differential amplifier 7, and signal is carried out filtering, single-chip microcomputer 2 and warning device 10, liquid crystal indicator 11 links to each other with keyboard 12, can show signal, abnormal signal is reported to the police.
The utility model is based on the groundwork flow process of the online oil analysis device of the wind-power electricity generation of magnetic permeability as shown in Figure 3:
(1) sensor is installed in the middle of the fluid loop, guarantees steady operation.
(2) the sensor reference signal is proofreaied and correct, the two ends input of differential amplifier does not equate when entering sensor with assurance fluid.
(3) pick-up unit carries out self check after the start, determines whether sensor is in normal operating conditions.
(4) microprocessor reads the signal that collects, and after the stable output signal, valuable signal is stored by the time.
(5) microprocessor carries out computing to signal, and shows measurement result by display device.
(6) to there being the anomalous signals alarm module to report to the police, abnormal signal is extracted and analyzes.
Claims (8)
1. online oil analysis device of the wind-power electricity generation based on magnetic permeability, comprise: fluid sensor, testing circuit device, microprocessor and data presentation and memory storage, it is characterized in that fluid is through being sealed in the central fluid sensor of box, the testing circuit device links to each other with coil in the middle of the sensor, measure the variation of the magnetic permeability of the central particle of fluid, thereby the parameter that obtains characteristic signal changes and signals collecting is handled to microprocessor, and carries out data presentation and storage.
2. the online oil analysis device of the wind-power electricity generation based on magnetic permeability according to claim 1 is characterized in that described fluid sensor comprises three groups of coils and a plexi-glass tubular.
3. the online oil analysis device of the wind-power electricity generation based on magnetic permeability according to claim 1, it is characterized in that two lateral coils in three groups of coils of described fluid sensor are driven by the AC power of high frequency, and differential concatenation, middle one group as secondary coil.
4. the online oil analysis device of the wind-power electricity generation based on magnetic permeability according to claim 1, the plexi-glass tubular that it is characterized in that described fluid sensor is a magnetic-lag.
5. the online oil analysis device of the wind-power electricity generation based on magnetic permeability according to claim 1 is characterized in that three groups of coils of described fluid sensor are installed on the plexi-glass tubular, and wherein the coil of both sides equates with the distance of central sensing coil.
6. the online oil analysis device of the wind-power electricity generation based on magnetic permeability according to claim 1 is characterized in that comprising that the secondary coil of fluid sensor links to each other with the testing circuit device.
7. the online oil analysis device of the wind-power electricity generation based on magnetic permeability according to claim 1 is characterized in that the testing circuit device comprises reference signal circuit, differential amplifier circuit, bandpass filter, analog-to-digital conversion circuit.
8. the online oil analysis device of the wind-power electricity generation based on magnetic permeability according to claim 1 is characterized in that microprocessor comprises digital signal processor and single-chip microcomputer composition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2010205969659U CN201837574U (en) | 2010-11-04 | 2010-11-04 | Wind power generation on-line oil analysis device based on magnetic conductivity |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010205969659U CN201837574U (en) | 2010-11-04 | 2010-11-04 | Wind power generation on-line oil analysis device based on magnetic conductivity |
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| CN201837574U true CN201837574U (en) | 2011-05-18 |
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| CN2010205969659U Expired - Fee Related CN201837574U (en) | 2010-11-04 | 2010-11-04 | Wind power generation on-line oil analysis device based on magnetic conductivity |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103308431A (en) * | 2013-06-05 | 2013-09-18 | 桂林电子科技大学 | Sensor for monitoring metal abrasive particles in oil liquid on line and application method for sensor |
| CN103411786A (en) * | 2013-08-15 | 2013-11-27 | 新疆维吾尔自治区风能研究所 | Method for diagnosing working condition of wind generating set through lubricating oil detection |
| CN103543253A (en) * | 2013-10-21 | 2014-01-29 | 中国航空工业集团公司北京长城航空测控技术研究所 | Networking communication method of on-line wind turbine generator gearbox oil liquid monitoring system |
| CN103558127A (en) * | 2013-11-12 | 2014-02-05 | 北京理工大学 | Differential online oil abrasive particle sensor testing system |
| CN103808911A (en) * | 2013-12-09 | 2014-05-21 | 神华集团有限责任公司 | Lubricating oil detection device |
| CN104697905A (en) * | 2015-03-20 | 2015-06-10 | 桂林电子科技大学 | Oil abrasive particle detecting sensor and design method thereof |
| CN107340226A (en) * | 2017-08-03 | 2017-11-10 | 江苏大学 | Suspended particulates counting and detecting device and its application in a kind of fluid |
| CN108344572A (en) * | 2018-04-28 | 2018-07-31 | 北京信息科技大学 | A kind of wet clutch sliding wear process oil contamination tolerance level test method and device |
| CN109283119A (en) * | 2018-10-16 | 2019-01-29 | 北京信息科技大学 | A kind of oil liquid abrasive grain on-line monitoring inductance sensor testing stand |
| CN110470822A (en) * | 2019-08-21 | 2019-11-19 | 岭澳核电有限公司 | A kind of nuclear power station equipment wearing monitoring system and method |
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2010
- 2010-11-04 CN CN2010205969659U patent/CN201837574U/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103308431B (en) * | 2013-06-05 | 2015-06-03 | 桂林电子科技大学 | Sensor for monitoring metal abrasive particles in oil liquid on line and application method for sensor |
| CN103308431A (en) * | 2013-06-05 | 2013-09-18 | 桂林电子科技大学 | Sensor for monitoring metal abrasive particles in oil liquid on line and application method for sensor |
| CN103411786A (en) * | 2013-08-15 | 2013-11-27 | 新疆维吾尔自治区风能研究所 | Method for diagnosing working condition of wind generating set through lubricating oil detection |
| CN103543253A (en) * | 2013-10-21 | 2014-01-29 | 中国航空工业集团公司北京长城航空测控技术研究所 | Networking communication method of on-line wind turbine generator gearbox oil liquid monitoring system |
| CN103558127B (en) * | 2013-11-12 | 2016-02-03 | 北京理工大学 | A kind of differential type oil liquid abrasive grain on-line sensor test macro |
| CN103558127A (en) * | 2013-11-12 | 2014-02-05 | 北京理工大学 | Differential online oil abrasive particle sensor testing system |
| CN103808911A (en) * | 2013-12-09 | 2014-05-21 | 神华集团有限责任公司 | Lubricating oil detection device |
| CN104697905A (en) * | 2015-03-20 | 2015-06-10 | 桂林电子科技大学 | Oil abrasive particle detecting sensor and design method thereof |
| CN104697905B (en) * | 2015-03-20 | 2017-04-05 | 桂林电子科技大学 | A kind of method for designing and oil liquid abrasive grain detection means of oil liquid abrasive grain detection sensor |
| CN107340226A (en) * | 2017-08-03 | 2017-11-10 | 江苏大学 | Suspended particulates counting and detecting device and its application in a kind of fluid |
| CN108344572A (en) * | 2018-04-28 | 2018-07-31 | 北京信息科技大学 | A kind of wet clutch sliding wear process oil contamination tolerance level test method and device |
| CN109283119A (en) * | 2018-10-16 | 2019-01-29 | 北京信息科技大学 | A kind of oil liquid abrasive grain on-line monitoring inductance sensor testing stand |
| CN109283119B (en) * | 2018-10-16 | 2024-03-08 | 北京信息科技大学 | Oil abrasive particle on-line monitoring inductance sensor test bed |
| CN110470822A (en) * | 2019-08-21 | 2019-11-19 | 岭澳核电有限公司 | A kind of nuclear power station equipment wearing monitoring system and method |
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Granted publication date: 20110518 Termination date: 20111104 |