CN2570777Y - Orthogonal optical fibre on-line oil monitor - Google Patents
Orthogonal optical fibre on-line oil monitor Download PDFInfo
- Publication number
- CN2570777Y CN2570777Y CN 02279519 CN02279519U CN2570777Y CN 2570777 Y CN2570777 Y CN 2570777Y CN 02279519 CN02279519 CN 02279519 CN 02279519 U CN02279519 U CN 02279519U CN 2570777 Y CN2570777 Y CN 2570777Y
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- Prior art keywords
- fluid
- optical
- fibre
- sensing probe
- optical fibre
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- 239000013307 optical fiber Substances 0.000 title claims description 22
- 239000012530 fluid Substances 0.000 claims description 41
- 239000000523 sample Substances 0.000 claims description 32
- 230000003287 optical effect Effects 0.000 claims description 12
- 239000007788 liquid Substances 0.000 claims description 8
- 239000000446 fuel Substances 0.000 claims description 4
- 239000002828 fuel tank Substances 0.000 claims description 4
- 238000012806 monitoring device Methods 0.000 claims description 4
- 238000012545 processing Methods 0.000 claims description 4
- 238000005070 sampling Methods 0.000 claims description 4
- 238000012360 testing method Methods 0.000 claims description 3
- 239000002245 particle Substances 0.000 abstract description 27
- 239000000835 fiber Substances 0.000 abstract description 10
- 239000007787 solid Substances 0.000 abstract description 5
- 230000001050 lubricating effect Effects 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 3
- 239000003344 environmental pollutant Substances 0.000 abstract 1
- 231100000719 pollutant Toxicity 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 13
- 238000012544 monitoring process Methods 0.000 description 11
- 238000000149 argon plasma sintering Methods 0.000 description 5
- 238000002474 experimental method Methods 0.000 description 5
- 238000004458 analytical method Methods 0.000 description 4
- 238000009826 distribution Methods 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000011109 contamination Methods 0.000 description 3
- 230000004907 flux Effects 0.000 description 3
- 239000010687 lubricating oil Substances 0.000 description 3
- 230000035807 sensation Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 239000013618 particulate matter Substances 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008033 biological extinction Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000003760 hair shine Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
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- 238000013341 scale-up Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
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- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The utility model relates to an on-line oil monitor based on the fiber optic technology, which is composed of a fiber optic sensor, sensor detecting and measuring parts, etc., wherein the sensor is arranged in series in a pipeline of a lubricating system of a monitored device. The utility model has the technical characteristic that the on-line oil monitor adopts an orthogonal light path system, and solid particulate pollutant in the oil can be measured on line. The wear condition of the detected device can be revealed through the degree of pollution of the oil reflected by the size of wear particles and the particle concentration, and the utility model provides a new device for detecting the condition of the device.
Description
Technical field
The utility model relates to contained solid particle size and the instrument of dustiness, the particularly monitor of particle and contamination level of oil liquid in the orthogonal fibre on-line monitoring fluid in the light scattering characteristic monitoring fluid that utilizes abrasive particle in the fluid.
Background technology
At present, method by the monitoring lubricating oil, the equipment lubrication system monitored many under laboratory condition, carry out, mainly containing the analysis of spectrum and analyzing iron spectrum technology experiment chamber has time lag, analytic process complexity and analysis result more rely on the shortcoming of expertise, the instrument that is used for online detection of domestic and international exploitation is primarily aimed at the magnetic of wear particle and measures, but the particle of general measure is all bigger, precision is low.Fluid based on measuring method detects on-line monitoring at present, have and utilize in the oil light scattering characteristic of abrasive particle to develop, as HIAC/ROYCO photoelectric type abrasive particle on-line monitoring instrument produced in USA, the spot figure that uses the light scattering of linear sweep sensor record fast to produce, can detect the spatial variations signal of particle, and spatial variations is relevant with size, light characteristic and the pattern of scattering thing, is not suitable for on-line monitoring.The LaserNet Fines optics wear particle monitoring instrument of USN's exploitation can be used for off-line analysis, also can be used for online monitoring, laser diode generates image after shining fluid on the photoelectron camera, the image that generates is used for wear Particles Recognition, all images is used for the characteristic that definite fluid is reflected, this quasi-instrument costs an arm and a leg.The domestic pollution detection patent (99232097) of employing direct-injection type light path and the strength of fluid survey sensor (96218109) that uses the CCD receiver of mainly containing.
Summary of the invention
To be that design is a kind of detect particulate size in the fluid, the online oil liquid monitoring device of orthogonal fibre of reflection status of equipment by measuring fluid light scattering light transmission capacity to the purpose of this utility model.
Realize the online oil liquid monitoring device of the utility model purpose, form by the signal piping that optical sensing probe and fluid flow, characteristics are that the optical sensing probe is the two-way optical fiber sensing probe, and the signal piping quadrature that two-way optical fiber sensing probe and fluid flow, fluid is from top to down by the test sample pond, and pairwise orthogonal input path and receiving light path and fluid flow line are formed three-D space structure.
Above-mentioned optical fiber sensing probe is by light emitting diode, input optical fibre, collimation lens, sample cell, output optical fibre, photoelectric receiving tube, data collecting card, signal Processing computing machine are formed the straight line setting in regular turn of above-described light emitting diode, input optical fibre, collimation lens, sample cell, output optical fibre, photoelectric receiving tube.
Described signal piping system is made of fuel tank, fuel sucking pipe, tensimeter, oil pump, surplus valve, adjustable throttling, flowmeter, well heater, the pipe of storing fibre-optical probe, fluid sampling spot, two position three-way valve, filtrator, the thermometer of the belt stirrer that pipeline links to each other.
The designed online fluid Fibre Optical Sensor of the utility model can detect relatively little grain graininess by measuring fluid light scattering light transmission capacity.Reflect that by light flux variations undersized solid particulate matter information reflects the state of equipment.Adopt the optical channel of light transmitting fiber as monitoring, can explosion-proof and anti-external interference, be suitable for multiple industrial and mineral occasion.Adopt the design of orthotomic system to make instrument have high sensitivity and stability, need not measure the on-line measurement that incident intensity just can realize fluid.
The beneficial effects of the utility model are to study at solid particulate matter in the fluid, promptly measure all grain graininess sizes in the fluid, and distribution characteristics.Wherein the size of wear particle and distribution have determined the dustiness of fluid, and abrasive particle content contamination level of oil liquid more at most is serious more.
Description of drawings
Fig. 1 is designed oil liquid monitoring experiment table.
Fig. 2 is the fiber sensor measuring schematic diagram.
Fig. 3 is the fiber-optic sensor probe structural drawing.
Fig. 4 is orthogonal fibre monitor external form figure.
Among Fig. 1 the oil liquid monitoring experiment table by 1. lubricating oil and fuel tank, 2. the fluid stirrer, 3. fuel sucking pipe, 4. tensimeter, 5. oil pump, 6. surplus valve, 7. adjustable throttling, 8. flowmeter, 9. well heater, 10. fibre-optical probe pipe position, 11. fluid sampling spots, 12. two position three-way valves, 13. filtrators, 14. thermometers are installed.
Among Fig. 2,15. light emitting diodes, 17. collimation lenses, 18. sample cells, 16.19. input-output optical fiber, 20. photoelectric receiving tubes, 21. data collecting cards, 22. computing machines.
Among Fig. 3,23. incident optical joints, 24. lens combinations, 25. quartz glasss, 26. light path main parts, 27. sample cells, 28. outgoing fibre-optical splices, 29. are adjusted screws, the 30. optical fiber device that is of coupled connections.
Among Fig. 4,31. connectors, 32. revolve head, 33. plastic tubings, 34. signal pipings, 35.36. sensor probe, 37. light sensation districts, 38-40. passage 1,39-41 passage 2.
Embodiment
This online fluid detecting device adopts embedded mode to be installed in 10 places, position of fluid experiment table shown in Figure 1, the fluid experiment table is by lubricating oil and fuel tank 1, and fluid stirrer 2, fuel sucking pipe 3, tensimeter 4, oil pump 5, surplus valve 6, adjustable throttling 7, flowmeter 8, well heater 9, fluid sampling spot 11, two position three-way valve 12, filtrator 13, thermometer 14 are formed.Be mainly used to simulate actual plant equipment lubricating system, to finish the Research on on-line-measuring of Fibre Optical Sensor.
The sensor detecting system measuring principle as shown in Figure 2, by light source 15, collimation lens 17, input-output optical fiber 16,19, photoelectric receiving tube 20, data collecting card 21, computing machine 22 etc. are partly formed.The luminous flux I0 that is produced by light source 15 introduces measured zone by input optical fiber 16 and collimation lens 17 with light, promptly is arranged in the sample cell 18 on the light path.Will do not assembled by lens, export to the Photoelectric Signal Processing unit, promptly on the photosurface of photoelectric receiving tube 20 through second optical fiber 19 by the part emergent light of particle scattering and absorption.Utilize photoelectric signal amplifier can measure the luminous flux I of carrying information, carry out data processing and analysis by data collecting card 21 input computing machines 22.Computing machine is mainly finished storage to signal, computing etc., shows measured result at last.
The light source that when intensity is I0 is the fluid (inhomogeneous medium) of L by thickness, owing to be suspended in particle in the oil to absorption of incident light and scattering process, make the transmitted intensity that passes particle be attenuated to I, light intensity weakens and meets the Beer-Lambert law so, and formula is as follows:
I＝I
0exp(-τL)
In the formula: τ is and the irrelevant scale-up factor of light intensity, is called attenuation coefficient or turbidity; L is for measuring light path.
τ=NK σ=π/4D
2NK wherein K is an extinction coefficient, characterizes the scattered quantum of each particle to incident light, is that particle diameter, wavelength and the particle function with respect to the refractive index of medium: N is a particle number concentration, promptly refers to the granule number in the unit volume; D is a particle diameter; σ is long-pending for the particle side to light.Variation by measured light intensity gets final product the distribution that Inversion Calculation goes out all solids particle in the fluid, thus the particle contamination degree of characterization device lubricating system.
Among the embodiment, sensor probe comprises incident fibre-optical splice 23 as shown in Figure 3, light path main part 26 and outgoing fibre-optical splice 28.Finish the centering of optical beam path adjusts by the screw 29 on the adjustment fibre-optical splice.Main part 26 cylindrical shapes comprise lens combination 17 and sample cell 18, and sample cell 18 is half deep gouge at right cylinder middle part, is 3/4 body diameter deeply, and are bonding with quartz glass thin slice 25,27 around the groove, isolate fluid and optical system.Fibre-optical splice and main part adopt the copper metal material, by being threaded, guarantee the stability of light path system.Light emitting diode 15 and photoelectric receiving tube 20 link to each other with incident and outgoing fibre-optical splice 23,28 by be of coupled connections device 30 of optical fiber.
Fig. 4 is installed on a signal piping 34 for sensor adopts orthogonal optical drive test amount system embodiment synoptic diagram with two sensor probe 35,36 quadratures shown in Figure 3, must guarantee two probes and sample cell 18 centerings.To have revolving of screw 32 airtight with middle at these signal piping 34 two ends, oil pipe jointing 31 with revolve 32 and be threaded, by plastic tubing 33 fluid is guided the sample cell 18 that enters sensor probe from the checkout equipment lubricating system.Light source shines light sensation district 37 by optical fiber, lens combination from passage 38,39, and fluid is from top to down by the light sensation district, and pairwise orthogonal input path and receiving light path are formed three dimensions with the fluid flow line.When wherein having wear particle, just produce scattering, signal is converted to electric signal by passage 40,41 by photoelectric receiving tube.Because identical working environment of living in then can be formed system of equations by following two formula.
Then can eliminate incident intensity by ratio and change the influence that brings, i.e. (I
0)
1/ (I
0)
2Value equals constant.Do not need to measure the size of incident intensity value before so each measurement, guaranteed that this sensor can be used for the fluid on-line measurement.Two-way optical measurement passage can adopt different wave length to measure on the other hand, and the employing different wave length can effectively inverting distribution of particles function.
Claims (3)
1, a kind of online oil liquid monitoring device, form by the signal piping that optical sensing probe and fluid flow, it is characterized in that the optical sensing probe is two-way optical fiber sensing probe (35), (36), two-way optical fiber sensing probe (35), (36) and mobile signal piping (34) quadrature of fluid, fluid is from top to down by the test sample pond, three-D space structure is formed with the fluid flow line in pairwise orthogonal input path (38), (39) and receiving light path (40), (41).
2, monitor as claimed in claim 1, it is characterized in that described optical fiber sensing probe is by light emitting diode (15), input optical fibre (16), collimation lens (17), sample cell (18) output optical fibre (19), photoelectric receiving tube (20), data collecting card (21), signal Processing computing machine (22) are formed the straight line setting in regular turn of above-described light emitting diode, input optical fibre, collimation lens, sample cell, output optical fibre, photoelectric receiving tube.
3, monitor as claimed in claim 1, it is characterized in that the fluid signal piping is mounted in the fuel tank (1) of the belt stirrer (2) that is linked to each other by pipeline, the fluid signal piping system that fuel sucking pipe (3), tensimeter (4), oil pump (5), surplus valve (6), adjustable throttling (7), flowmeter (8), well heater (9), the pipe of putting fibre-optical probe (10), fluid sampling spot (11), two position three-way valve (12), filtrator (13), thermometer (14) are formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02279519 CN2570777Y (en) | 2002-10-11 | 2002-10-11 | Orthogonal optical fibre on-line oil monitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02279519 CN2570777Y (en) | 2002-10-11 | 2002-10-11 | Orthogonal optical fibre on-line oil monitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2570777Y true CN2570777Y (en) | 2003-09-03 |
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ID=33742573
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02279519 Expired - Fee Related CN2570777Y (en) | 2002-10-11 | 2002-10-11 | Orthogonal optical fibre on-line oil monitor |
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| CN (1) | CN2570777Y (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1300570C (en) * | 2004-06-25 | 2007-02-14 | 武汉理工大学 | On-line oil monitoring sensor based on double light paths |
| CN100434896C (en) * | 2005-05-08 | 2008-11-19 | 西安交通大学 | Online method for measuring oil density in oil containing sewage and device thereof |
| CN101655457B (en) * | 2009-09-22 | 2011-01-12 | 孟国营 | Detection method and sensor for overloading gear oil dustiness |
| CN102636428A (en) * | 2012-03-26 | 2012-08-15 | 北京农业智能装备技术研究中心 | Device and method for automatically testing granular fertilizer friction coefficient |
| CN103713114A (en) * | 2012-09-29 | 2014-04-09 | 成都金福天下投资管理有限公司 | Hydraulic oil test system |
| CN103743656A (en) * | 2013-05-29 | 2014-04-23 | 吉林市天宇科技有限责任公司 | Sampling device for detecting pollution degree of petroleum product particles |
| CN105424572A (en) * | 2015-12-23 | 2016-03-23 | 电子科技大学 | On-line detector for particle impurities in transformer oil |
| CN108693324A (en) * | 2018-05-21 | 2018-10-23 | 中国电建集团中南勘测设计研究院有限公司 | A kind of leakage line oil monitoring device |
| CN108956958A (en) * | 2018-07-17 | 2018-12-07 | 清华大学 | Protective device for lubricant parameter measuring system |
| CN109612962A (en) * | 2018-12-17 | 2019-04-12 | 中北大学 | A kind of optical fiber transmission-type probe for detecting octane number |
| CN111830032A (en) * | 2020-06-01 | 2020-10-27 | 济南液脉智能科技有限公司 | Online multi-parameter hydraulic oil intelligent sensor device based on image sensing |
| CN112362590A (en) * | 2020-11-16 | 2021-02-12 | 通标标准技术服务有限公司 | Oil pollution detection device and method |
-
2002
- 2002-10-11 CN CN 02279519 patent/CN2570777Y/en not_active Expired - Fee Related
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1300570C (en) * | 2004-06-25 | 2007-02-14 | 武汉理工大学 | On-line oil monitoring sensor based on double light paths |
| CN100434896C (en) * | 2005-05-08 | 2008-11-19 | 西安交通大学 | Online method for measuring oil density in oil containing sewage and device thereof |
| CN101655457B (en) * | 2009-09-22 | 2011-01-12 | 孟国营 | Detection method and sensor for overloading gear oil dustiness |
| CN102636428B (en) * | 2012-03-26 | 2015-08-19 | 北京农业智能装备技术研究中心 | A kind of granulated fertilizer friction factor automatic testing equipment and method |
| CN102636428A (en) * | 2012-03-26 | 2012-08-15 | 北京农业智能装备技术研究中心 | Device and method for automatically testing granular fertilizer friction coefficient |
| CN103713114A (en) * | 2012-09-29 | 2014-04-09 | 成都金福天下投资管理有限公司 | Hydraulic oil test system |
| CN103743656B (en) * | 2013-05-29 | 2016-08-10 | 吉林市天宇科技有限责任公司 | For detecting the sampling device of oil product particle pollution degree |
| CN103743656A (en) * | 2013-05-29 | 2014-04-23 | 吉林市天宇科技有限责任公司 | Sampling device for detecting pollution degree of petroleum product particles |
| CN105424572A (en) * | 2015-12-23 | 2016-03-23 | 电子科技大学 | On-line detector for particle impurities in transformer oil |
| CN108693324A (en) * | 2018-05-21 | 2018-10-23 | 中国电建集团中南勘测设计研究院有限公司 | A kind of leakage line oil monitoring device |
| CN108956958A (en) * | 2018-07-17 | 2018-12-07 | 清华大学 | Protective device for lubricant parameter measuring system |
| CN109612962A (en) * | 2018-12-17 | 2019-04-12 | 中北大学 | A kind of optical fiber transmission-type probe for detecting octane number |
| CN111830032A (en) * | 2020-06-01 | 2020-10-27 | 济南液脉智能科技有限公司 | Online multi-parameter hydraulic oil intelligent sensor device based on image sensing |
| CN111830032B (en) * | 2020-06-01 | 2023-10-13 | 济南液脉智能科技有限公司 | Online multi-parameter hydraulic oil intelligent sensor device based on image sensing |
| CN112362590A (en) * | 2020-11-16 | 2021-02-12 | 通标标准技术服务有限公司 | Oil pollution detection device and method |
| CN112362590B (en) * | 2020-11-16 | 2023-09-22 | 通标标准技术服务有限公司 | Oil pollution detection device and method |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |