CN103308431A - Sensor for monitoring metal abrasive particles in oil liquid on line and application method for sensor - Google Patents
Sensor for monitoring metal abrasive particles in oil liquid on line and application method for sensor Download PDFInfo
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Abstract
The invention discloses a sensor for monitoring metal abrasive particles in oil liquid on line. The sensor is a mutual inductance sensor and comprises an exciting coil and an inducting coil, wherein an oil path through which the oil liquid can pass is arranged in the center of a framework made of a magnetic inert material; the exciting coil and the inducting coil are coaxially wound on the framework; the inducing coil is positioned between the exciting coil and the framework; the axial length of the inducting coil is 1/4-1/2 of that of the exciting coil; and the axial center points of the inducting coil and the exciting coil are superposed. The sensor realizes zero compensation and adjustment by adopting a parallel measurement structure and is simple in structure, high in sensitivity, high in linearity and high in interference resistance. The sensor applied to on-line monitoring for the metal abrasive particles in the oil liquid is convenient to operate, high in instantaneity, high in measurement precision and accurate and reliable in monitored result and can be widely applied to military and civil fields and used for monitoring the pollution degree and the abrasion to the oil liquid of lubricating systems of mechanical equipment such as various air planes, naval vessels and automobiles and monitoring and diagnosing faults of the lubricating systems of the mechanical equipment to avoid safety accidents.
Description
Technical field
The present invention relates to mechanical equipment state monitoring, wherein oil analysis technology specifically more specifically is used for sensor and the application process thereof of on-line monitoring fluid metal worn particle.
Background technology
It is modal failure mode that equipment attrition lost efficacy, and the fault of plant equipment 70% or more is relevant with wearing and tearing, the lubrication and abrasion state of the good judgment device of parameter energy that obtains by monitoring and analysis to fluid.It is the new technology that is used for the mechanical equipment state monitoring that develops rapidly in recent ten years, and especially at aspects such as engine, gear drive, bearing arrangement, hydraulic systems, this technology has obtained significant benefit, thereby is at home and abroad paid much attention to.In the country of industry prosperity, the oil analysis technology or is becoming one of indispensable method of mechanical equipment state monitoring and fault diagnosis, occupies critical role at present.The oil analysis technology is divided into off-line type and online.Traditional off-line type mainly concentrates on the aspects such as spectral analysis, analyzing iron spectrum, grain count, oil physical and chemical analysis.The analysis principle that online detection system adopts mainly contains electromagnetic method, X-ray energy spectrum, electrostatic method and photoelectric method etc.Compare with online machine oil analysis, compare with online machine oil analysis, off-line type machine oil analysis has very high monitoring accuracy.But lab analysis time-consuming long (need to gather, transmit, process sample and wait for analysis result) and testing cost are high.And in long analysis time, the variation and cause system failure in the off-line analysis process of the oil quality in the machine system.Therefore off-line type exists that workload is large, feature that can not real time reaction fluid, can cause and declare late erroneous judgement and the high shortcoming of detecting instrument cost.The monitoring plant equipment is the process of a quantitative change to qualitative change from may wear to inefficacy, and the time that this process occurs is unknown, just can be so that the monitoring of fluid is not full of contingency so must at every moment carry out on-line monitoring to fluid.The defective of the deficiency that the fluid on-line monitoring is fine to have overcome that traditional laboratory off-line analysis method cost is high, complicated operation, measurement sample point are limited becomes the main direction of oil liquid monitoring technical development of new generation.And the fluid on-line monitoring has a lot of disturbing factors, wants in time to pinpoint the problems just must possess very high monitoring accuracy.
Summary of the invention
The object of the present invention is to provide a kind of highly sensitively, the linearity is good, the sensor that is used for on-line monitoring fluid metal worn particle that antijamming capability is strong.
Sensor for on-line monitoring fluid metal worn particle of the present invention is the mutual inductance type inductance sensor, comprise drive coil and inductive coil, arranging in the frame center made from the magnetic-lag material can be by the oil circuit of fluid, coaxial drive coil and the inductive coil of coiling on skeleton, inductive coil is between drive coil and skeleton, the axial length of inductive coil is 1/4 ~ 1/2 of drive coil axial length, and inductive coil overlaps with the axial midpoint of drive coil.
The present invention uses ANSYN software to the solenoid coil modeling and simulating, utilize numerical analysis method that sensor construction is studied, find the magnetic field distribution situation that the motivating solenoid coil produces, zone line in solenoid coil inside form approximate uniform magnetic field and this regional magnetic field the strongest, and arrive 1/2 of central magnetic field intensity coil magnetic fidle of end strength retrogression, magnetic field intensity from the centre along axis to two ends is not uniformly, neither linear attenuation, but the arc decay.So the inductive coil of sensor must in the middle of the coil of drive coil, just make sensor have optimum sensitivity and the linearity.The intermediate approximation in the magnetic field that the length of inductive coil must produce according to the drive coil uniformly length in zone is determined.
For making sensor have optimum sensitivity, make sensor output have the good linearity, the optimum value of the axial length of inductive coil should be 1/4 ~ 1/2 of drive coil axial length.
Another object of the present invention is with the on-line monitoring of sensor application of the present invention in the fluid metal worn particle.
The key step of using sensor of the present invention to monitor is as follows:
A. drive coil L1 and the L2 access excitation in parallel AC field module fd with two identical sensors realizes zero compensation and adjusting, be connected into alternating current bridge with two inductive coil LS1 and LS2 differential concatenation and with resistance R 1 and the R2 of the resistances such as two, sensor output two ends connect signal condition module, capacitor C and deflection machine R
PBe connected between output terminal of sensor and the signal condition module;
B. fluid passes through from the oil circuit of one of them sensor, and the another one sensor does not pass into any material;
C. after the output signal of the sensor process signal condition module acquisition process, obtain the relevant parameters of fluid metal worn particle.
For making monitoring result accurate, resistance R 1 is far longer than the equiva lent impedance of inductive coil.
Drive coil L1 and L2 access excitation in parallel AC field module fd, drive coil is transfused to the excitation AC field and produces alternating magnetic field, and inductive coil LS1 and LS2 are because the induction electromotive force output that the variation in magnetic field produces.The induction electromotive force differential concatenation output that inductive coil LS1 and LS2 produce, and be connected into alternating current bridge output with the very large fixed resistance of two resistances.Capacitor C and deflection machine R
PThe balance adjustment that is used for alternating current bridge.Another is obstructed out-of-date by the fluid that contains metal worn particle to contain a brachium pontis of drive coil and inductive coil in sensor, and metal worn particle affects the magnetic field intensity of sensor, destroys the balance of electric bridge, the alternating voltage of inductive coil output respective magnitudes.When the fluid that does not have abrasive particle passed through sensor, the voltage that two induced field coils of sensor produce was identical, and bridge circuit is output as zero.Output voltage size and metal worn particle concentration are directly proportional, and the metal worn particle concentration that contains in the fluid is larger, and output voltage values is larger.To the output signal acquisition and processing, reach the purpose to fluid metal worn particle concentration on-line monitoring by the signal condition module.Certainly subsequent treatment also comprises some conventional data and the result treatment steps such as A/D conversion and microprocessor processes.
The relationship description of the amplitude of output signal and metal worn particle number is as follows:
The induced electromotive force of two inductive coils
With
Be respectively:
In the formula,
Be exciting current;
Be the power supply angular frequency;
Be the coefficient of mutual inductance of LS1 to L1;
For LS2 to L2
Coefficient of mutual inductance.
Then output voltage is:
Before metal worn particle entered sensor, the inductance of generation was:
When
The time,
In the formula,
Be permeability of vacuum;
The number of turn of expression drive coil coil; R represents the internal diameter of magnetic-lag pipe; L represents the drive coil axial length.
When a metal worn particle entered sensor, the inductance increment of generation was:
In the formula,
Be the metal worn particle relative permeability;
Be the metal worn particle radius;
Be the metal worn particle axial length.
Suppose that abrasive particle is circular, namely 2
, then following formula is reduced to:
When having n abrasive particle to enter sensor, total inductance increment is:
So the rate of change of inductance is:
Therefore, in the situation that sensor physical dimension (r, L) is definite, the relative permeability of metal worn particle
, metal worn particle quantity n larger, then inductance value changes greatly, the output voltage signal amplitude is also larger, namely the quantity n of output signal amplitude and metal worn particle is proportional.
The sensor construction of on-line monitoring fluid metal worn particle of the present invention is reasonable, highly sensitive, and the linearity is good, and antijamming capability is strong.In on-line monitoring fluid metal worn particle, method is easy to operate with sensor application of the present invention, and real-time is good, and measuring accuracy is high, and monitoring result accurately and reliably.
Sensor of the present invention and the application process in on-line monitoring thereof, can apply to dual-use field, comprise the monitoring of oil contamination degree and the malfunction monitoring diagnosis of the lubricating system of the plant equipment such as various aircrafts, naval vessel and automobile, avoid owing to abrasive particle in wearing and tearing or the fluid too much can not in time be found and be processed, and cause mechanical fault.
Description of drawings
Fig. 1 cell winding structural drawing.
Fig. 2 sensor measurement schematic diagram.
Embodiment
Further describe the present invention below in conjunction with accompanying drawing and by embodiment.
See Fig. 1.The sensor of on-line monitoring fluid metal worn particle is the mutual inductance type inductance sensor, comprise drive coil and inductive coil, arranging in the frame center that the magnetic-lag material is made can be by the oil circuit of fluid, the coaxial drive coil of coiling and inductive coil on skeleton, inductive coil is between drive coil and skeleton, the axial length of inductive coil is 1/3 of drive coil axial length, inductive coil overlap with axial midpoint drive coil, namely in the axial direction, inductive coil is in the middle part of drive coil.
See Fig. 2.The key step that the use the sensor carries out on-line monitoring fluid metal worn particle is as follows:
A. drive coil L1 and the L2 access in parallel with two identical sensors encourages AC field module fd, be connected into alternating current bridge with two inductive coil LS1 and LS2 differential concatenation and with resistance R 1 and the R2 of the resistances such as two, sensor output two ends connect signal condition module, capacitor C and potentiometer R
PBe connected between output terminal of sensor and the signal condition module;
Resistance R 1 wherein is far longer than the equiva lent impedance of inductive coil.
B. fluid passes through from the oil circuit of one of them sensor, and the another one sensor does not pass into any material;
C. the output signal of sensor through signal condition module acquisition process after, in time obtain the relevant parameters of fluid metal worn particle: such as the concentration of metal worn particle in the fluid (grain number/liter or mg/litre), the relative permeability of metal worn particle and the particle diameter of metal worn particle.
Subsequent treatment also comprises some conventional data and the result treatment steps such as A/D conversion and microprocessor processes.
Claims (4)
1. the sensor that is used for on-line monitoring fluid metal worn particle, be mutual inductance sensor, comprise drive coil and inductive coil, it is characterized in that: arranging in the frame center that the magnetic-lag material is made can be by the oil circuit of fluid, coaxial drive coil and the inductive coil of coiling on skeleton, inductive coil is between drive coil and skeleton, and the axial length of inductive coil is 1/4 ~ 1/2 of drive coil axial length, and inductive coil overlaps with the axial midpoint of drive coil.
2. sensor according to claim 1, it is characterized in that: the axial length of inductive coil is 1/4 ~ 1/2 of drive coil axial length.
3. sensor claimed in claim 1 is characterized in that in the application of fluid metal worn particle on-line monitoring: mainly comprise following step
A. drive coil L1 and the L2 access in parallel with two identical sensors encourages AC field module fd, be connected into alternating current bridge with two inductive coil LS1 and LS2 differential concatenation and with resistance R 1 and the R2 of the resistances such as two, two output terminals of sensor connect signal condition module, capacitor C and potentiometer R
PBe connected between the output terminal and signal condition module of sensor;
B. after, fluid passes through from the oil circuit of one of them sensor, and the another one sensor does not pass into any material;
C. after the output signal of the sensor process signal condition module acquisition process, obtain the relevant parameters of fluid metal worn particle.
4. application as claimed in claim 3 is characterized in that: resistance R 1 is far longer than the equiva lent impedance of inductive coil.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104697910A (en) * | 2015-03-05 | 2015-06-10 | 清华大学 | On-line detection sensor for content of ferromagnetic abrasive particles in lubricating oil |
| CN105300863A (en) * | 2015-11-20 | 2016-02-03 | 北京至感传感器技术研究院有限公司 | Detection device and detection method for ferromagnetic abrasive grains in liquid oil |
| CN105300853A (en) * | 2015-11-24 | 2016-02-03 | 大连海事大学 | Series resonance type oil liquid metal particle measurement apparatus and series resonance type oil liquid metal particle measurement method |
| CN105891280A (en) * | 2016-05-12 | 2016-08-24 | 绍兴文理学院 | Electrification, centrifugation, absorption and adjacent capacitor abrasion fine particle on-line monitoring equipment |
| CN105928842A (en) * | 2016-05-12 | 2016-09-07 | 绍兴文理学院 | Wear particle monitoring system adopting electrification, rotational flow centrifugation, adsorption and adjacent capacitance |
| CN105973770A (en) * | 2016-05-16 | 2016-09-28 | 武汉理工大学 | Abrasive particle detecting device and abrasive particle detecting method |
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| CN106018191A (en) * | 2016-05-12 | 2016-10-12 | 李伟波 | Double-excitation solenoid type particle detection method achieved through full-frequency-band work condition self-adaptive filtering |
| CN107607460A (en) * | 2017-08-25 | 2018-01-19 | 爱德森（厦门）电子有限公司 | A kind of method for improving the online fluid metal worn particle electromagnetic monitoring degree of accuracy |
| CN108152361A (en) * | 2017-12-28 | 2018-06-12 | 爱德森（厦门）电子有限公司 | Online engine oil metal worn particle and temperature integrated monitor device and method |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1813203A (en) * | 2003-03-11 | 2006-08-02 | R.E.汤普森(真空)有限公司 | Apparatus for detecting the presence of electrically-conductive debris |
| US20100109686A1 (en) * | 2008-10-31 | 2010-05-06 | The University Of Akron | Metal wear detection apparatus and method employing microfluidic electronic device |
| CN101963570A (en) * | 2010-05-17 | 2011-02-02 | 深圳市亚泰光电技术有限公司 | Device for rapidly detecting ferromagnetic grain in lubricating oil, detection method and signal processing circuit |
| CN201837574U (en) * | 2010-11-04 | 2011-05-18 | 燕山大学 | Wind power generation on-line oil analysis device based on magnetic conductivity |
| CN102305755A (en) * | 2011-07-26 | 2012-01-04 | 北京航空航天大学 | Radial magnetic field-based online abrasive grain monitoring sensor and monitoring method |
| CN102331389A (en) * | 2010-11-30 | 2012-01-25 | 蒋伟平 | High-sensitivity oil abrasive grain on-line monitoring sensor |
| CN203365278U (en) * | 2013-06-05 | 2013-12-25 | 桂林电子科技大学 | Transducer for on-line monitoring of metal grains in oil liquid |
-
2013
- 2013-06-05 CN CN201310219608.9A patent/CN103308431B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1813203A (en) * | 2003-03-11 | 2006-08-02 | R.E.汤普森(真空)有限公司 | Apparatus for detecting the presence of electrically-conductive debris |
| US20100109686A1 (en) * | 2008-10-31 | 2010-05-06 | The University Of Akron | Metal wear detection apparatus and method employing microfluidic electronic device |
| CN101963570A (en) * | 2010-05-17 | 2011-02-02 | 深圳市亚泰光电技术有限公司 | Device for rapidly detecting ferromagnetic grain in lubricating oil, detection method and signal processing circuit |
| CN201837574U (en) * | 2010-11-04 | 2011-05-18 | 燕山大学 | Wind power generation on-line oil analysis device based on magnetic conductivity |
| CN102331389A (en) * | 2010-11-30 | 2012-01-25 | 蒋伟平 | High-sensitivity oil abrasive grain on-line monitoring sensor |
| CN102305755A (en) * | 2011-07-26 | 2012-01-04 | 北京航空航天大学 | Radial magnetic field-based online abrasive grain monitoring sensor and monitoring method |
| CN203365278U (en) * | 2013-06-05 | 2013-12-25 | 桂林电子科技大学 | Transducer for on-line monitoring of metal grains in oil liquid |
Non-Patent Citations (4)
| Title |
|---|
| 吴超，郑长松，马彪: "电感式磨粒传感器中铁磁质磨粒特性仿真研究", 《仪器仪表学报》 * |
| 杨冲冲，曹广忠，李学金，陆丕清，郑翔，蔡宇恒: "一种无接触铁磨粒测量传感器的优化设计", 《传感技术学报》 * |
| 范洪波，张英堂，任全国，李志宁: "新型磨粒在线监测传感器及其试验研究", 《摩擦学学报》 * |
| 范洪波，张英堂，程远，任全国: "磨粒径向分布对电感式磨粒传感器测试结果的影响", 《传感技术学报》 * |
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