CN110243733A - A kind of high gradient oil liquid abrasive grain detection device - Google Patents
A kind of high gradient oil liquid abrasive grain detection device Download PDFInfo
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- CN110243733A CN110243733A CN201910695351.1A CN201910695351A CN110243733A CN 110243733 A CN110243733 A CN 110243733A CN 201910695351 A CN201910695351 A CN 201910695351A CN 110243733 A CN110243733 A CN 110243733A
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- magnetic core
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- detection device
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- abrasive grain
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- 238000001514 detection method Methods 0.000 title claims abstract description 35
- 239000007788 liquid Substances 0.000 title claims abstract description 23
- 239000006061 abrasive grain Substances 0.000 title claims abstract description 22
- 230000005291 magnetic effect Effects 0.000 claims abstract description 66
- 230000001939 inductive effect Effects 0.000 claims abstract description 23
- 239000003921 oil Substances 0.000 claims abstract description 18
- 239000000758 substrate Substances 0.000 claims abstract description 14
- 239000002184 metal Substances 0.000 claims abstract description 11
- 229910052751 metal Inorganic materials 0.000 claims abstract description 11
- 239000002245 particle Substances 0.000 claims abstract description 11
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 5
- 238000002347 injection Methods 0.000 claims abstract description 3
- 239000007924 injection Substances 0.000 claims abstract description 3
- 239000000696 magnetic material Substances 0.000 claims description 6
- 239000011810 insulating material Substances 0.000 claims description 5
- 229910000976 Electrical steel Inorganic materials 0.000 claims description 3
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 claims description 3
- 239000013535 sea water Substances 0.000 claims description 3
- 229920005573 silicon-containing polymer Polymers 0.000 claims description 3
- 229910000859 α-Fe Inorganic materials 0.000 claims description 3
- 229920003229 poly(methyl methacrylate) Polymers 0.000 claims description 2
- 239000004926 polymethyl methacrylate Substances 0.000 claims description 2
- 230000005611 electricity Effects 0.000 claims 1
- 239000000463 material Substances 0.000 claims 1
- 230000005284 excitation Effects 0.000 abstract description 8
- 230000005294 ferromagnetic effect Effects 0.000 abstract description 7
- 239000010720 hydraulic oil Substances 0.000 abstract description 5
- 230000004069 differentiation Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- 230000008901 benefit Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- BAPJBEWLBFYGME-UHFFFAOYSA-N Methyl acrylate Chemical compound COC(=O)C=C BAPJBEWLBFYGME-UHFFFAOYSA-N 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- BVPWJMCABCPUQY-UHFFFAOYSA-N 4-amino-5-chloro-2-methoxy-N-[1-(phenylmethyl)-4-piperidinyl]benzamide Chemical compound COC1=CC(N)=C(Cl)C=C1C(=O)NC1CCN(CC=2C=CC=CC=2)CC1 BVPWJMCABCPUQY-UHFFFAOYSA-N 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000003302 ferromagnetic material Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000002923 metal particle Substances 0.000 description 1
- 239000013528 metallic particle Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/02—Investigating particle size or size distribution
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/06—Investigating concentration of particle suspensions
- G01N15/0656—Investigating concentration of particle suspensions using electric, e.g. electrostatic methods or magnetic methods
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/02—Investigating particle size or size distribution
- G01N2015/0288—Sorting the particles
Landscapes
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
- Measuring Magnetic Variables (AREA)
Abstract
The present invention provides a kind of high gradient oil liquid abrasive grain detection device, it include: pedestal arranged at the bottom and substrate, the detection device also includes the feeder connection that the injection oil liquid to be measured of described base internal one end is arranged in, and the substrate other end has the channel outlet of liquid outflow；There is sense channel between the flow channel entry point and the runner exit；The sensing unit for detecting metal worn particle is provided on the sense channel.The present invention applies excitation by being inserted with the solenoid coil of magnetic core to multiple centers, improves detection accuracy to generate the magnetic field of high gradient in inductance detection region；And be applied with excitation plane inductive coil can in hydraulic oil ferromagnetic particle and non-ferromagnetic debris carry out high-precision differentiations detection.
Description
Technical field
The present invention relates to G01 measurements；The technical field of test, specifically, more particularly to a kind of high gradient oil liquid abrasive grain
Detection device.
Background technique
In hydraulic system, hydraulic oil can provide the precious information in relation to system health.Wherein, clast abrasive grain
Content is the distinguishing mark of working state of system.And abrasive grain caused by hydraulic system is mainly ferromagnetic metal abrasive grain and non-ferric
Magnetic metal abrasive grain, in equipment normal course of operation, in hydraulic oil wear pollutant have metastable concentration and compared with
Small size.When being abnormal abrasion, wear particle concentration increases, and partial size will become larger.If machine continuous running in this state, gold
The concentration of metal particles is continued growing with size, until machine breaks down.Therefore, to the monitoring of metallic particles in hydraulic oil, it is
It carries out preventative maintenance and keeps key of the metal worn particle scale within Tolerance level in oil liquid, and to abrasion substance classes
Differentiation and detection, can be used for judging part and the position of inordinate wear occur.Wear particle detection dress based on inductance detection principle
Set due to not vulnerable to environmental disturbances and can to the advantage that ferromagnetic metal abrasive grain and non-ferromagnetic metal abrasive grain distinguish by
It is widely applied, but the detection accuracy of existing inductance type oil liquid detection device is limited, how to improve its detection accuracy, is always
One research hotspot.
Summary of the invention
According to technical problem set forth above, and provide a kind of high gradient oil liquid abrasive grain detection device.The present invention is mainly sharp
With a kind of high gradient oil liquid abrasive grain detection device, comprising: pedestal arranged at the bottom and substrate, which is characterized in that the detection
Device also includes the feeder connection that the injection seawater to be measured of described base internal one end is arranged in, and the substrate other end has
The channel outlet of liquid outflow；There is sense channel between the flow channel entry point and the runner exit；It is set on the sense channel
It is equipped with the sensing unit for metal worn particle detection.
Further, the sensing unit includes: in parallel and parallel connected plane inductive coil with a central hole one
And plane inductive coil two；The solenoid coil one being wound on sheet magnetic core, solenoid coil two, solenoid coil three and
Solenoid coil four.
Further, one end is one end of arcuation the and described arcuation and the sheet magnetic that the sense channel fits closely
Core one, sheet magnetic core two, sheet magnetic core three and sheet magnetic core four；The sheet magnetic core one/sheet, two/sheet of magnetic core magnetic core three/
The other end of sheet magnetic core four is wound with solenoid coil.
Further, the sense channel diameter is 300-2000 microns.
Further, the substrate is made of insulating materials；The insulating materials is dimethyl silicone polymer or poly- first
Base methyl acrylate.
Further, the sense channel is perpendicular through in the plane inductive coil one and plane inductive coil 28
Heart hole.
Further, one/sheet of sheet magnetic core magnetic core, two/sheet, three/sheet of magnetic core magnetic core four is set to described flat
Between face inductance coil one and plane inductive coil two.
Further, the one/plane inductive coil of plane inductive coil two passes through enameled wire coiling；The enameled wire
The internal coil diameter of coiling is 500-2000 microns, and the line footpath of the enameled wire is 50-200 microns, and the number of turns is 20-400 circle.
Further, the one/solenoid coil of solenoid coil, two/solenoid coil, three/solenoid coil four-way
Cross enameled wire coiling；The internal coil diameter of the enameled wire is 800-3000 microns, and enameled wire line footpath is 50-200 microns, and the number of turns is
20-1000 circle.
Further, one/sheet of sheet magnetic core magnetic core, two/sheet, three/sheet of magnetic core magnetic core four is soft magnetic material；
The soft magnetic material is silicon steel or ferrite.
Compared with the prior art, the invention has the following advantages that
The present invention applies excitation by being inserted with the solenoid coil of ferromagnetic material to center, to generate an excitation magnetic
, which can be concentrated on inductance detection region by sheet magnetic core, improve inspection to generate the magnetic field of high gradient in detection zone
Survey precision；And the plane inductive coil for being applied with excitation can be to the ferromagnetic particle and non-ferromagnetic debris progress height in hydraulic oil
The differentiation of precision detects.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to do simply to introduce, it should be apparent that, the accompanying drawings in the following description is this hair
Bright some embodiments for those of ordinary skill in the art without any creative labor, can be with
It obtains other drawings based on these drawings.
Fig. 1 is structure of the detecting device schematic diagram of the present invention.
Fig. 2 is sensing unit partial view of the present invention.
Fig. 3 is the partial view of detection coil of the present invention.
Fig. 4 is the partial view that the present invention is excitation coil and sheet magnetic core.
In figure: 1, feeder connection；2, sense channel；3, channel outlet；4, substrate；5, pedestal；6, sensing unit；7, plane
Inductance coil one；8, plane inductive coil two；9, solenoid coil one；10, solenoid coil two；11, solenoid coil three；
12, solenoid coil four；13, sheet magnetic core one；14, sheet magnetic core two；15, sheet magnetic core three；16, sheet magnetic core four.
Specific embodiment
In order to enable those skilled in the art to better understand the solution of the present invention, below in conjunction in the embodiment of the present invention
Attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is only
The embodiment of a part of the invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people
The model that the present invention protects all should belong in member's every other embodiment obtained without making creative work
It encloses.
It should be noted that description and claims of this specification and term " first " in above-mentioned attached drawing, "
Two " etc. be to be used to distinguish similar objects, without being used to describe a particular order or precedence order.It should be understood that using in this way
Data be interchangeable under appropriate circumstances, so as to the embodiment of the present invention described herein can in addition to illustrating herein or
Sequence other than those of description is implemented.In addition, term " includes " and " having " and their any deformation, it is intended that cover
Cover it is non-exclusive include, for example, the process, method, system, product or equipment for containing a series of steps or units are not necessarily limited to
Step or unit those of is clearly listed, but may include be not clearly listed or for these process, methods, product
Or other step or units that equipment is intrinsic.
As shown in Figs 1-4, the present invention provides a kind of high gradient oil liquid abrasive grain detection devices, comprising: arranged at the bottom
Substrate 4 and pedestal 5.
As a preferred embodiment, the detection device also includes the note that described 4 inside one end of substrate is arranged in
Enter the feeder connection 1 of seawater to be measured, 4 other end of substrate has the channel outlet 3 of liquid outflow；The flow channel entry point 1 with
There is sense channel 2 between the runner exit 3；The sensing unit 6 for metal worn particle is provided on the sense channel 2.
In the present embodiment, the sensing unit 6 includes: in parallel and parallel connected planar inductor with a central hole
Coil 1 and plane inductive coil 28；The solenoid coil 1 being wound on sheet magnetic core, solenoid coil 2 10, helical
Pipeline circle 3 11 and solenoid coil 4 12.It can be understood as in other embodiments, the quantity of the coil can be with
It is set according to practical situation, metal worn particle is detected as long as can satisfy and can be realized.
In the present embodiment, one end is that one end of arcuation the and described arcuation and the sense channel 2 fit closely
Sheet magnetic core 1, sheet magnetic core 2 14, sheet magnetic core 3 15 and sheet magnetic core 4 16；The one 13/ sheet magnetic of sheet magnetic core
The other end of 2 14/ sheet magnetic core of core, 3 15/ sheet magnetic core 4 16 is wound with solenoid coil.It is to be understood that the sheet
The quantity of magnetic core can be set according to practical situation, be detected i.e. as long as can satisfy and can be realized to metal worn particle
It can.
As a preferred embodiment, 2 diameter of sense channel is 300-2000 microns.Herein, further
Ground, the substrate 4 are made of insulating materials；The insulating materials is dimethyl silicone polymer or polymethyl methacrylate.
In the present embodiment, the sense channel 2 is perpendicular through the plane inductive coil 1 and plane inductive coil
28 centre bore.The sheet magnetic core one/sheet magnetic core two/sheet, three/sheet of magnetic core magnetic core four is set to the planar inductor
Between coil 1 and plane inductive coil 28.
As preferred embodiment, one 7/ plane inductive coil 28 of plane inductive coil passes through enameled wire coiling；
The internal coil diameter of the enameled wire coiling is 500-2000 microns, and the line footpath of the enameled wire is 50-200 microns, the number of turns 20-
400 circles.
As a preferred embodiment, one 9/ solenoid coil of solenoid coil, 2 10/ solenoid coil three
11/ solenoid coil 4 12 passes through enameled wire coiling；The internal coil diameter of the enameled wire is 800-3000 microns, enameled wire line footpath
It is 50-200 microns, the number of turns is 20-1000 circle.
In the present embodiment, the one 13/ sheet magnetic core of sheet magnetic core, 2 14/ sheet magnetic core, 3 15/ sheet magnetic core four
16 be soft magnetic material；The soft magnetic material is silicon steel or ferrite etc..The sheet magnetic core it is micro- with a thickness of 100-5000
Rice, diameter are 800-3000 microns, and width and length are varied according to opportunity situation use.
Preferably, high gradient oil liquid abrasive grain detection device described herein, can also be arranged exciting unit.Pass through
Exciting unit is to solenoid coil to exchange electric excitation, to generate a high-gradient magnetic field, which can be concentrated by sheet magnetic core
In inductance detection region.And then the detection unit can be to two plane inductive coils in parallel to exchange electric excitation, and detect plane
The variation of the apparent inductance of inductance coil.
The serial number of the above embodiments of the invention is only for description, does not represent the advantages or disadvantages of the embodiments.
In the above embodiment of the invention, it all emphasizes particularly on different fields to the description of each embodiment, does not have in some embodiment
The part of detailed description, reference can be made to the related descriptions of other embodiments.
In several embodiments provided herein, it should be understood that disclosed technology contents can pass through others
Mode is realized.Wherein, the apparatus embodiments described above are merely exemplary, such as the division of the unit, Ke Yiwei
A kind of logical function partition, there may be another division manner in actual implementation, for example, multiple units or components can combine or
Person is desirably integrated into another system, or some features can be ignored or not executed.Another point, shown or discussed is mutual
Between coupling, direct-coupling or communication connection can be through some interfaces, the INDIRECT COUPLING or communication link of unit or module
It connects, can be electrical or other forms.
The unit as illustrated by the separation member may or may not be physically separated, aobvious as unit
The component shown may or may not be physical unit, it can and it is in one place, or may be distributed over multiple
On unit.It can some or all of the units may be selected to achieve the purpose of the solution of this embodiment according to the actual needs.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (8)
1. a kind of high gradient oil liquid abrasive grain detection device, comprising: substrate (4) arranged at the bottom and pedestal (5), feature exists
In the detection device also includes
Feeder connection (1) in the injection seawater to be measured of the internal one end of the substrate (4), substrate (4) other end tool are set
The channel outlet (3) for thering is liquid to flow out；There are sense channel (2) between the flow channel entry point (1) and the runner exit (3)；Institute
State the sensing unit (6) being provided on sense channel (2) for detecting metal worn particle；
The sensing unit (6) includes: in parallel and parallel connected plane inductive coil with a central hole one (7) and plane electricity
Feel coil two (8)；The solenoid coil one (9) being wound on sheet magnetic core, solenoid coil two (10), solenoid coil three
(11) and solenoid coil four (12)；
One end is one end of arcuation the and described arcuation and the sheet magnetic core one (13) that the sense channel (2) fit closely, piece
Shape magnetic core two (14), sheet magnetic core three (15) and sheet magnetic core four (16)；The sheet magnetic core one (13)/sheet magnetic core two
(14)/sheet magnetic core three (15)/sheet magnetic core four (16) other end is wound with solenoid coil.
2. high gradient oil liquid abrasive grain detection device according to claim 1, it is further characterized in that: the sense channel (2)
Diameter is 300-2000 microns.
3. high gradient oil liquid abrasive grain detection device according to claim 1, it is further characterized in that: the substrate (4) is exhausted
Edge material is made；The insulating materials is dimethyl silicone polymer or polymethyl methacrylate.
4. high gradient oil liquid abrasive grain detection device according to claim 1, it is further characterized in that: the sense channel (2)
Perpendicular through the plane inductive coil one (7) and the centre bore of plane inductive coil two (8).
5. high gradient oil liquid abrasive grain detection device according to claim 1, it is further characterized in that: the sheet magnetic core one/
Sheet magnetic core two/sheet, three/sheet of magnetic core magnetic core four is set to the plane inductive coil one (7) and plane inductive coil two
(8) between.
6. high gradient oil liquid abrasive grain detection device according to claim 1 or 4, it is further characterized in that: the planar inductor
Coil one (7)/plane inductive coil two (8) passes through enameled wire coiling；The internal coil diameter of the enameled wire coiling is 500-2000
Micron, the line footpath of the enameled wire are 50-200 microns, and the number of turns is 20-400 circle.
7. high gradient oil liquid abrasive grain detection device according to claim 1, it is further characterized in that: the solenoid coil one
(9)/solenoid coil two (10)/solenoid coil three (11)/solenoid coil four (12) passes through enameled wire coiling；The enamel-cover
The internal coil diameter of line is 800-3000 microns, and enameled wire line footpath is 50-200 microns, and the number of turns is 20-1000 circle.
8. high gradient oil liquid abrasive grain detection device according to claim 1, it is further characterized in that: the sheet magnetic core one
(13)/sheet magnetic core two (14)/sheet magnetic core three (15)/sheet magnetic core four (16) is soft magnetic material；The soft magnetic material
For silicon steel or ferrite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910695351.1A CN110243733A (en) | 2019-07-30 | 2019-07-30 | A kind of high gradient oil liquid abrasive grain detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910695351.1A CN110243733A (en) | 2019-07-30 | 2019-07-30 | A kind of high gradient oil liquid abrasive grain detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110243733A true CN110243733A (en) | 2019-09-17 |
Family
ID=67893696
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910695351.1A Pending CN110243733A (en) | 2019-07-30 | 2019-07-30 | A kind of high gradient oil liquid abrasive grain detection device |
Country Status (1)
| Country | Link |
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| CN (1) | CN110243733A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110907529A (en) * | 2019-12-04 | 2020-03-24 | 大连海事大学 | Inductive abrasive particle detection sensor and manufacturing method thereof |
| CN112697659A (en) * | 2020-12-09 | 2021-04-23 | 重庆邮电大学 | Metal abrasive particle detection sensor structure based on planar induction coil and detection method |
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| CN109115844A (en) * | 2018-08-29 | 2019-01-01 | 大连海事大学 | A kind of high sensitivity hydraulic oil liquid detection device and preparation method thereof |
| CN109630502A (en) * | 2018-12-28 | 2019-04-16 | 大连海事大学 | A kind of multi-parameter oil liquid comprehensive detection device and preparation method thereof |
| CN109916786A (en) * | 2019-03-29 | 2019-06-21 | 大连海事大学 | A kind of twin coil inductance type abrasive grain monitoring device and preparation method thereof |
| CN110031373A (en) * | 2019-05-17 | 2019-07-19 | 大连海事大学 | A kind of multi signal synchronous feedback plant of oil liquid detection |
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2019
- 2019-07-30 CN CN201910695351.1A patent/CN110243733A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN109115844A (en) * | 2018-08-29 | 2019-01-01 | 大连海事大学 | A kind of high sensitivity hydraulic oil liquid detection device and preparation method thereof |
| CN109630502A (en) * | 2018-12-28 | 2019-04-16 | 大连海事大学 | A kind of multi-parameter oil liquid comprehensive detection device and preparation method thereof |
| CN109916786A (en) * | 2019-03-29 | 2019-06-21 | 大连海事大学 | A kind of twin coil inductance type abrasive grain monitoring device and preparation method thereof |
| CN110031373A (en) * | 2019-05-17 | 2019-07-19 | 大连海事大学 | A kind of multi signal synchronous feedback plant of oil liquid detection |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110907529A (en) * | 2019-12-04 | 2020-03-24 | 大连海事大学 | Inductive abrasive particle detection sensor and manufacturing method thereof |
| CN112697659A (en) * | 2020-12-09 | 2021-04-23 | 重庆邮电大学 | Metal abrasive particle detection sensor structure based on planar induction coil and detection method |
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Application publication date: 20190917 |