CN102323189A - Inductive wear particle monitoring device and measuring unit thereof - Google Patents
Inductive wear particle monitoring device and measuring unit thereof Download PDFInfo
- Publication number
- CN102323189A CN102323189A CN201110140920A CN201110140920A CN102323189A CN 102323189 A CN102323189 A CN 102323189A CN 201110140920 A CN201110140920 A CN 201110140920A CN 201110140920 A CN201110140920 A CN 201110140920A CN 102323189 A CN102323189 A CN 102323189A
- Authority
- CN
- China
- Prior art keywords
- insulated conductor
- wear particle
- monitoring device
- measuring unit
- cavity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
Abstract
The invention discloses an inductive wear particle monitoring device and a measuring unit thereof. The device comprises a test coil and an analysis module. The measuring unit comprises an insulated conductor and a cavity, wherein taps at both ends of the insulated conductor are connected with the analysis module; the cavity is used for liquid to be tested to flow through; and the insulated conductor is fixed on the inner wall of the cavity in a spiral shape. When the inductive wear particle monitoring device provided by the invention is applied to monitor wear particles, the cavity is used as a flow passage of the fluid to be tested; and the liquid to be tested is directly in contact with the insulated conductor, so a theoretical space between the liquid to be tested and the insulated conductor is 0. Compared with the prior art, the wear particles in the liquid to be tested can be passed through by more magnetic force lines and the insulated conductor has larger inductance change, so that the monitoring sensitivity is greatly improved; the wear particles with the diameters of less than 50 micrometers in the liquid to be tested can be detected; and the inductive wear particle monitoring device and the measuring unit thereof have important significance in monitoring and diagnosing a fault of machine equipment.
Description
Technical field
The invention belongs to the oil liquid monitoring technical field, relate in particular to a kind of inductance type wear particle monitoring device and measuring unit thereof.
Background technology
All kinds of machinery and equipment are in operational process; Will inevitably produce the wear particle that is suspended in the lubricating system fluid; Big wear particle can cause the badly damaged of equipment at short notice; Wear particle is the important information carrier of device interior state of wear, and therefore, the situation of wear particle has significance to the malfunction monitoring and the fault diagnosis of equipment in the grasp fluid promptly and accurately.
For this reason; Prior art provides a kind of inductance type wear particle monitoring device; It is through monitoring the wear particle in the oil product of lubricating oil or other plant equipment; And equipment is played the initiatively effect of preventive maintenance, prevent the inefficacy and the fault of equipment to be widely applied to fields such as engineering and traffic machinery.
Show the principle of the inductance type wear particle monitoring device that prior art provides like Fig. 1, it comprises measuring unit and analysis module.Measuring unit wherein adopts the solenoid mode, specifically is that insulated conductor is wrapped on the insulation tube, and the two ends tap of this insulated conductor connects analysis module.When this inductance type wear particle monitoring device of application detected fluid, fluid to be measured flow through insulation tube.When the wear particle in the fluid to be measured passes through measuring unit; With the inductance value that changes measuring unit; The ferromagnetism wear particle makes the inductance value of measuring unit increase; And the nonferromagnetic wear particle makes the inductance value of measuring unit reduce, and analysis module can carry out qualitative and quantitative detection to the wear particle in the fluid through the detection to the measuring unit inductance value.
In theory, the wall thickness of insulation tube runner more little or fluid to be measured is narrow more, and the wear particle of then flowing through and the distance of measuring unit are near more, and detection sensitivity is high more.Yet owing to receive the restriction of tubing intensity and manufacturing process; The wall thickness of insulation tube makes and has big distance between insulation tube and the wear particle to be measured all the time; And then make that the sensitivity of the inductance type wear particle monitoring device that prior art provides is low, be difficult for realizing to the monitoring of diameter at the wear particle below 200 microns.
Summary of the invention
The purpose of the embodiment of the invention is to provide a kind of inductance type wear particle monitoring device; To solve inductance type wear particle monitoring device that prior art provides because the wall thickness of insulation tube in the measuring unit; Make and have big distance, the problem that sensitivity is low between insulation tube and the wear particle to be measured.
The embodiment of the invention is achieved in that a kind of inductance type wear particle monitoring device, and said device comprises magnetic test coil and analysis module, and said measuring unit comprises:
Insulated conductor, the two ends tap of said insulated conductor connects said analysis module;
The cavity that supplies testing liquid to flow through, said insulated conductor is fixed on the inwall of said cavity with spiral fashion.
In the said apparatus, the inwall of said cavity is provided with the end groove that shape is in the shape of a spiral arranged, and said insulated conductor is fixed in the said groove.
In the said apparatus, said cavity can be to be processed by the insulation injection molded material.
Further, in the said apparatus, said insulation injection molded material can be dimethyl silicone polymer or polymethylmethacrylate.
The present invention also provides a kind of measuring unit of inductance type wear particle monitoring device, and said measuring unit comprises:
Insulated conductor, the two ends tap of said insulated conductor connects analysis module;
The cavity that supplies testing liquid to flow through, said insulated conductor is fixed on the inwall of said cavity with spiral fashion.
In the above-mentioned measuring unit, the inwall of said cavity is provided with the end groove that shape is in the shape of a spiral arranged, and said insulated conductor is fixed in the said groove.
In the above-mentioned measuring unit, said cavity can be to be processed by the insulation injection molded material.
In the above-mentioned measuring unit, said insulation injection molded material can be dimethyl silicone polymer or polymethylmethacrylate.
The present invention also provides a kind of method for making of measuring unit of aforesaid inductance type wear particle monitoring device, said method comprising the steps of:
The thin axle that is wound with insulated conductor is fixed in the mould;
Inject liquid insulation injection molded material to said mould, and with liquid insulation injection molded material curing molding in the said mould;
Said insulation injection molded material behind said mould and thin axle and the curing molding is separated, and said insulated conductor is fixed on the said insulation injection molded material inwall with original state.
In the said method, said insulation injection molded material can be dimethyl silicone polymer or polymethylmethacrylate.
When application inductance type wear particle monitoring device provided by the invention was monitored the wear particle in fluid or other testing liquid, cavity was as the runner of testing liquid, and at this moment, because testing liquid directly contacts with insulated conductor, theoretical pitch therebetween is 0.Compare with the inductance type wear particle monitoring device that prior art provides; Wear particle in the testing liquid can be passed through by the more magnetic line of force; The inductance value of insulated conductor changes bigger; Thereby greatly improved the sensitivity of monitoring, and can detect in the testing liquid diameter, safe and reliable operation and the personal safety of machinery and equipment had significance at the wear particle below 50 microns.
Description of drawings
Fig. 1 is the schematic diagram of the inductance type wear particle monitoring device that provides of prior art;
Fig. 2 is the schematic diagram of inductance type wear particle monitoring device provided by the invention;
Fig. 3 is the method for making process flow diagram of measuring unit in the inductance type wear particle monitoring device provided by the invention.
Fig. 4 is when using inductance type wear particle monitoring device detection provided by the invention wear particle below 70 microns, the graph of a relation of wear particle diameter and insulated conductor inductance variable quantity.
Embodiment
In order to make the object of the invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with accompanying drawing and embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
It is the principle of inductance type wear particle monitoring device provided by the invention that Fig. 2 shows, and for the ease of explanation, only shows the part relevant with the present invention.
Inductance type wear particle monitoring device provided by the invention comprises measuring unit and analysis module 13, and measuring unit wherein further comprises: insulated conductor, and the two ends tap of this insulated conductor connects analysis module 13; The cavity 12 that supplies testing liquid to flow through, insulated conductor is fixed on the inwall of cavity 12 with spiral fashion.Particularly, the inwall of cavity 12 is provided with one section groove 11 that shape is in the shape of a spiral arranged, and insulated conductor is fixed in the groove 11.
When application inductance type wear particle monitoring device provided by the invention was monitored the wear particle in fluid or other testing liquid, cavity 12 was as the runner of testing liquid, and at this moment, because testing liquid directly contacts with insulated conductor, theoretical pitch therebetween is 0.Compare with the inductance type wear particle monitoring device that prior art provides; Wear particle in the testing liquid can be passed through by the more magnetic line of force; The inductance value of insulated conductor changes bigger; Thereby greatly improved the sensitivity of monitoring, and can detect micron order wear particle in the testing liquid, the safe and reliable operation and the personal safety of machinery and equipment had significance.
Wherein, cavity 12 can be to be processed by dimethyl silicone polymer (PDMS) or polymethylmethacrylate (PMMA), certainly, can also be to be processed by the insulation injection molded material that has other now; Testing liquid wherein is preferably lubricating oil.
The present invention also provides a kind of measuring unit of aforesaid inductance type wear particle monitoring device.
Fig. 3 is the method for making flow process of measuring unit in the inductance type wear particle monitoring device provided by the invention.
In step S101, the thin axle that is wound with insulated conductor is fixed in the mould, the diameter of this thin axle depends on the flow diameter of the testing liquid that is designed.
In step S102, inject liquid insulation injection molded material to this mould, and through modes such as heating, with liquid insulation injection molded material curing molding in the mould.Liquid state insulation injection molded material wherein is preferably dimethyl silicone polymer (PDMS) or polymethylmethacrylate (PMMA).
In step S103; Insulation injection molded material behind mould and thin axle and the curing molding is separated; At this moment, the former insulated conductor that is wrapped on the thin axle will still be fixed on the insulation injection molded material inwall with original state, and the part between this insulated conductor becomes the runner of testing liquid.
Fig. 4 shows when using above-mentioned inductance type wear particle monitoring device detection provided by the invention wear particle below 70 microns, the relation of wear particle diameter and insulated conductor inductance variable quantity.
When application inductance type wear particle monitoring device provided by the invention was monitored the wear particle in fluid or other testing liquid, cavity 12 was as the runner of testing liquid, and at this moment, because testing liquid directly contacts with insulated conductor, theoretical pitch therebetween is 0.Compare with the inductance type wear particle monitoring device that prior art provides; Wear particle in the testing liquid can be passed through by the more magnetic line of force; The inductance value of insulated conductor changes bigger; Thereby greatly improved the sensitivity of monitoring, and can detect in the testing liquid diameter, safe and reliable operation and the personal safety of machinery and equipment had significance at the wear particle below 50 microns.
The above; Be merely the preferable embodiment of the present invention; But protection scope of the present invention is not limited thereto; Any technician who is familiar with the present technique field is equal to replacement or change according to technical scheme of the present invention and inventive concept thereof in the technical scope that the present invention discloses, all should be encompassed within protection scope of the present invention.
Claims (10)
1. an inductance type wear particle monitoring device is characterized in that said device comprises measuring unit and analysis module, and said measuring unit comprises:
Insulated conductor, the two ends tap of said insulated conductor connects said analysis module;
The cavity that supplies testing liquid to flow through, said insulated conductor is fixed on the inwall of said cavity with spiral fashion.
2. inductance type wear particle monitoring device as claimed in claim 1 is characterized in that, the inwall of said cavity is provided with the end groove that shape is in the shape of a spiral arranged, and said insulated conductor is fixed in the said groove.
3. inductance type wear particle monitoring device as claimed in claim 1 is characterized in that, said cavity is to be processed by the insulation injection molded material.
4. inductance type wear particle monitoring device as claimed in claim 3 is characterized in that said insulation injection molded material is dimethyl silicone polymer or polymethylmethacrylate.
5. the measuring unit of an inductance type wear particle monitoring device is characterized in that, said measuring unit comprises:
Insulated conductor, the two ends tap of said insulated conductor connects analysis module;
The cavity that supplies testing liquid to flow through, said insulated conductor is fixed on the inwall of said cavity with spiral fashion.
6. the measuring unit of inductance type wear particle monitoring device as claimed in claim 5 is characterized in that, the inwall of said cavity is provided with the end groove that shape is in the shape of a spiral arranged, and said insulated conductor is fixed in the said groove.
7. the measuring unit of inductance type wear particle monitoring device as claimed in claim 4 is characterized in that, said cavity is to be processed by the insulation injection molded material.
8. the measuring unit of inductance type wear particle monitoring device as claimed in claim 5 is characterized in that, said insulation injection molded material is dimethyl silicone polymer or polymethylmethacrylate.
9. the method for making like the measuring unit of each described inductance type wear particle monitoring device of claim 5 to 8 is characterized in that, said method comprising the steps of:
The thin axle that is wound with insulated conductor is fixed in the mould;
Inject liquid insulation injection molded material to said mould, and with liquid insulation injection molded material curing molding in the said mould;
Said insulation injection molded material behind said mould and thin axle and the curing molding is separated, and said insulated conductor is fixed on the said insulation injection molded material inwall with original state.
10. the method for making of the measuring unit of inductance type wear particle monitoring device as claimed in claim 7 is characterized in that, said insulation injection molded material is dimethyl silicone polymer or polymethylmethacrylate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110140920.XA CN102323189B (en) | 2011-05-27 | 2011-05-27 | Inductive wear particle monitoring device and measuring unit thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110140920.XA CN102323189B (en) | 2011-05-27 | 2011-05-27 | Inductive wear particle monitoring device and measuring unit thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102323189A true CN102323189A (en) | 2012-01-18 |
| CN102323189B CN102323189B (en) | 2014-09-24 |
Family
ID=45450976
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110140920.XA Active CN102323189B (en) | 2011-05-27 | 2011-05-27 | Inductive wear particle monitoring device and measuring unit thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102323189B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104069905A (en) * | 2014-07-21 | 2014-10-01 | 大连海事大学 | Micro-fluidic chip |
| 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 |
| 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 |
| CN107314954A (en) * | 2017-06-07 | 2017-11-03 | 华东师范大学 | Small magnetic particle measurer and its measuring method in a kind of fluid |
| CN109470606A (en) * | 2018-11-02 | 2019-03-15 | 大连海事大学 | A kind of microfluid inductance type oil liquid detection device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5811664A (en) * | 1994-08-31 | 1998-09-22 | University Of Edinburgh | Debris monitoring |
| CN1291721A (en) * | 1999-10-11 | 2001-04-18 | 刘峰璧 | Method for detecting metal filings in lubricating oil |
| US20100109686A1 (en) * | 2008-10-31 | 2010-05-06 | The University Of Akron | Metal wear detection apparatus and method employing microfluidic electronic device |
| CN202066832U (en) * | 2011-05-27 | 2011-12-07 | 张洪朋 | Electrical inductance type abrasive grain monitoring device and measuring unit thereof |
-
2011
- 2011-05-27 CN CN201110140920.XA patent/CN102323189B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5811664A (en) * | 1994-08-31 | 1998-09-22 | University Of Edinburgh | Debris monitoring |
| CN1291721A (en) * | 1999-10-11 | 2001-04-18 | 刘峰璧 | Method for detecting metal filings in lubricating oil |
| US20100109686A1 (en) * | 2008-10-31 | 2010-05-06 | The University Of Akron | Metal wear detection apparatus and method employing microfluidic electronic device |
| CN202066832U (en) * | 2011-05-27 | 2011-12-07 | 张洪朋 | Electrical inductance type abrasive grain monitoring device and measuring unit thereof |
Non-Patent Citations (2)
| Title |
|---|
| FAN HONGBO,ET AL: "Study on oil detection technology based on inductive wear debris sensor", 《THE NINTH INTERNATIONAL CONFERENCE ON ELECTRONIC MEASUREMENT & INSTRUMENTS》 * |
| LI DU, ET AL: "Real-time monitoring of wear debris in lubrication oil using a microfluidic inductive Coulter counting device", 《MICROFLUID NANOFLUID》 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104069905A (en) * | 2014-07-21 | 2014-10-01 | 大连海事大学 | Micro-fluidic chip |
| 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 |
| CN105300853B (en) * | 2015-11-24 | 2018-07-10 | 大连海事大学 | A kind of serial-resonant fluid metallic particles measuring device and its measuring method |
| CN107314954A (en) * | 2017-06-07 | 2017-11-03 | 华东师范大学 | Small magnetic particle measurer and its measuring method in a kind of fluid |
| CN107314954B (en) * | 2017-06-07 | 2021-11-19 | 华东师范大学 | Device and method for measuring tiny magnetic particles in fluid |
| CN109470606A (en) * | 2018-11-02 | 2019-03-15 | 大连海事大学 | A kind of microfluid inductance type oil liquid detection device |
| CN109470606B (en) * | 2018-11-02 | 2021-05-25 | 大连海事大学 | Microfluid inductance type oil detection device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102323189B (en) | 2014-09-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102323189B (en) | Inductive wear particle monitoring device and measuring unit thereof | |
| Ren et al. | Inductive debris sensor using one energizing coil with multiple sensing coils for sensitivity improvement and high throughput | |
| CN105300853B (en) | A kind of serial-resonant fluid metallic particles measuring device and its measuring method | |
| CN202837240U (en) | Steel rope flaw detector | |
| CN109813761B (en) | Inductance magnetic plug type oil liquid on-line monitoring device | |
| CN104502242A (en) | On-line abrasive particle monitoring method and monitoring sensor based on bilateral symmetric structure of the radial magnetic field | |
| CN109916785B (en) | Planar inductive abrasive particle monitoring device and manufacturing method thereof | |
| CN101349604B (en) | Apparatus and method for testing and monitoring pipe real time pressure | |
| CN202066832U (en) | Electrical inductance type abrasive grain monitoring device and measuring unit thereof | |
| CN202101968U (en) | Plane inductance type abraded particle monitoring device and measuring unit thereof | |
| CN105571995B (en) | A kind of online oil liquid abrasive grain imaging sensor for countering of aircraft engine and manufacturing method | |
| CN203838150U (en) | Oil way system for detecting lubricant oil | |
| CN107515105A (en) | Solenoid valve fault diagnostic method based on plunger vibration signal | |
| CN103983666B (en) | A kind of without ground wire non-conductive coating layer electric spark detection apparatus and detection method thereof | |
| CN103753785A (en) | Method for monitoring mould clamping force of injection molding machine | |
| CN102323190B (en) | Planar inductive wear particle monitoring device and measuring unit thereof | |
| CN108535140B (en) | A kind of magnetorheological fluid response characteristics testing device and its method | |
| Zhang et al. | An LC resonance-based sensor for multi-contaminant detection in oil fluids | |
| CN201867355U (en) | Online monitoring sensor for flowing oil metal particles | |
| CN102927072B (en) | A kind of electrohydraulic control of belt spool position probing | |
| WO2012162869A1 (en) | Inductive wear particle monitoring device and detecting unit thereof | |
| SG185891A1 (en) | Monitoring hydrocarbon fluid flow | |
| CN102818920B (en) | Current measuring method and device based on electromagnetic force and through optical fibers | |
| Zeng et al. | A novel inductance/capacitance microfluidic chip for the multi-contamination detection in marine hydraulic oil | |
| CN201628701U (en) | Detecting probe for oxide in austenitic pipe |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |