CN211927620U - Oil metal particle detection device based on high-low frequency excitation - Google Patents
Oil metal particle detection device based on high-low frequency excitation Download PDFInfo
- Publication number
- CN211927620U CN211927620U CN201922493577.1U CN201922493577U CN211927620U CN 211927620 U CN211927620 U CN 211927620U CN 201922493577 U CN201922493577 U CN 201922493577U CN 211927620 U CN211927620 U CN 211927620U
- Authority
- CN
- China
- Prior art keywords
- eddy current
- current sensor
- metal particle
- frequency excitation
- low frequency
- 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.)
- Active
Links
Images
Landscapes
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
Abstract
The utility model relates to the field of metal particle detection, and discloses a high-low frequency excitation-based oil metal particle detection device, which comprises a symmetrical detection area, a first eddy current sensor, a first connector, an upper computer, a second eddy current sensor and a second connector, the symmetry detection area includes first detection area and second detection area, first eddy current sensor establishes the one side at first detection area, first eddy current sensor passes through first connector and upper computer connection, second eddy current sensor passes through second connector and upper computer connection and receives the excitation signal of the low frequency that the upper computer applyed, first eddy current sensor includes first LC oscillating circuit, first LC oscillating circuit includes parallel connection's first PCB coil and first electric capacity, second eddy current sensor includes second LC oscillating circuit, second LC oscillating circuit includes parallel connection's second PCB coil and second electric capacity. The utility model discloses can monitor ferromagnetism metal particle and non-ferromagnetism metal particle simultaneously.
Description
Technical Field
The utility model relates to a metal particle detection area, in particular to fluid metal particle detection device based on high low frequency excitation.
Background
The state detection of the lubricating oil is an important ring for ensuring the safe and stable operation of mechanical equipment, the abrasion condition of the mechanical equipment can be monitored by accurately analyzing and monitoring the state of the lubricating oil on line, the occurrence of faults is predicted, maintenance and repair are carried out in time, the maintenance cost can be greatly reduced, the loss is reduced, and the production efficiency is improved. Iron and its alloy materials are important components constituting parts of mechanical equipment, and ferromagnetic particles appear in a lubricating oil passage and flow with the oil when the mechanical parts are worn. Therefore, the wear degree of mechanical equipment can be obtained by monitoring ferromagnetic particles in the oil, and the aim of ensuring safe and stable production is fulfilled. The traditional oil metal particle detection methods have the problem that ferromagnetic metal particles and non-ferromagnetic metal particles cannot be monitored simultaneously.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model lies in, to the above-mentioned defect of prior art, a fluid metal particle detection device based on high low frequency excitation that can monitor ferromagnetic metal particle and non-ferromagnetic metal particle simultaneously is provided.
The utility model provides a technical scheme that its technical problem adopted is: the oil metal particle detection device based on high-low frequency excitation is constructed and comprises a symmetrical detection area, a first eddy current sensor, a first connector, an upper computer, a second eddy current sensor and a second connector, wherein the symmetrical detection area comprises a first detection area and a second detection area, the first eddy current sensor is arranged on one side of the first detection area, the first eddy current sensor is connected with the upper computer through the first connector and receives a high-frequency excitation signal applied by the upper computer, the second eddy current sensor is arranged on one side of the second detection area, the second eddy current sensor is connected with the upper computer through the second connector and receives a low-frequency excitation signal applied by the upper computer, the first eddy current sensor comprises a first LC (inductance-capacitance) oscillation circuit, the first LC oscillation circuit comprises a first PCB (printed circuit) coil and a first capacitor which are connected in parallel, the second eddy current sensor includes a second LC tank circuit including a second PCB coil and a second capacitor connected in parallel.
Fluid metal particle detection device based on high low frequency excitation, first eddy current sensor still includes first singlechip, first singlechip with first PCB coil connection, the built-in first inductance detection module of first singlechip.
In the oil metal particle detecting device based on high and low frequency excitation, the first eddy current sensor is connected with the first connector through a first connecting wire.
Fluid metal particle detection device based on high low frequency excitation, second eddy current sensor still includes the second singlechip, the second singlechip with second PCB coil connection, the built-in second inductance detection module of second singlechip.
In the oil metal particle detecting device based on the excitation of high and low frequencies, the second eddy current sensor is connected with the second connector through a second connecting wire.
In the oil metal particle detection device based on high and low frequency excitation, the first PCB coil and the second PCB coil are planar coils.
Fluid metal particle detection device based on high low frequency excitation in, still include lubricating oil driving pump, lubricating oil return circuit, adapter and oil circuit piece, lubricating oil driving pump with the lubricating oil return circuit is connected, the lubricating oil return circuit loops through the adapter with the oil circuit piece with symmetry detection area connects.
Among the fluid metal particle detection device based on high low frequency excitation, the lubricating oil return circuit comprises closed oil pipe.
Implement the utility model discloses a fluid metal particle detection device based on high low frequency excitation has following beneficial effect: the oil metal particle detection device based on high-low frequency excitation can monitor oil metal particles on line and can detect the concentration of ferromagnetic metal particles and the size of ferromagnetic metal particles in oil, distinguish ferromagnetic metal granule and non-ferromagnetic metal granule in the detection fluid, consequently the utility model discloses can monitor ferromagnetic metal granule and non-ferromagnetic metal granule simultaneously.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an embodiment of the oil liquid metal particle detection device based on high and low frequency excitation according to the present invention;
fig. 2 is a schematic diagram of detection of oil metal particles by using high-low frequency excitation in the embodiment.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model discloses in the fluid metal particle detection device embodiment based on high low frequency excitation, this fluid metal particle detection device based on high low frequency excitation's schematic structure diagram is shown in FIG. 1. Fig. 2 is a schematic diagram of the detection of the oil metal particles by using high and low frequency excitation in the present embodiment. In this embodiment, this fluid metal particle detection device based on high low frequency excitation includes symmetrical detection area 1, first eddy current sensor 2, first connector 3, host computer 4, second eddy current sensor 5 and second connector 6, and wherein, first eddy current sensor 2 and second eddy current sensor 5 symmetry are installed additional in symmetrical detection area 1 both sides.
Specifically, the symmetric detection area 1 includes a first detection area 11 and a second detection area 12, the first eddy current sensor 2 is disposed on one side of the first detection area 11, the first eddy current sensor 2 is connected to the upper computer 4 through the first connector 3, the second eddy current sensor 5 is disposed on one side of the second detection area 12, the second eddy current sensor 5 is connected to the upper computer 4 through the second connector 6, the upper computer 4 applies a high-frequency excitation signal to the first eddy current sensor 2, the upper computer 4 applies a low-frequency excitation signal to the second eddy current sensor 5, the high-frequency excitation signal refers to an excitation signal with a frequency greater than a set frequency value, and the low-frequency excitation signal refers to an excitation signal with a frequency less than or equal to the set frequency value.
First eddy current sensor 2 includes first LC oscillating circuit 21, first LC oscillating circuit 21 includes first PCB coil 211 and first capacitance 212 connected in parallel, and first eddy current sensor 2 and second eddy current sensor 5 are both free of permanent magnets, and second eddy current sensor 5 includes second LC oscillating circuit 51, and second LC oscillating circuit 5 includes second PCB coil 511 and second capacitance 512 connected in parallel. The first PCB coil 211 and the second PCB coil 511 are both planar coils.
The first detection region 11 and the second detection region 12 are two symmetric regions, and are designed such that the ferromagnetic metal particles a and the non-ferromagnetic particles B in the first detection region 11 can be detected by the first eddy current sensor 2, the ferromagnetic metal particles a and the non-ferromagnetic particles B in the second detection region 12 can be detected by the second eddy current sensor 5, the first eddy current sensor 2 is not affected by the ferromagnetic metal particles a in the second detection region 12, and the second eddy current sensor 5 is also not affected by the ferromagnetic metal particles a in the first detection region 11.
The utility model discloses the principle of utilization as follows: an LC oscillating circuit is formed by a planar coil and a capacitor, alternating current in the planar coil can generate an alternating magnetic field in the axial direction of the coil, ferromagnetic metal particles can be magnetized in the alternating magnetic field, the magnetic flux of the planar coil is increased, the inductance of the planar coil is increased, and the inductance increase of the planar coil is in direct proportion to the relative permeability mu c and the volume of the ferromagnetic metal particles. The non-ferromagnetic metal particles, which have a relative magnetic permeability μ c of 0 or close to 0, cannot be magnetized, and as a result, the inductance of the planar coil does not change. The eddy current effect means that when the block conductor is placed in an alternating magnetic field or moved in a fixed magnetic field, an induced current is generated in the block conductor, and the current is closed in the block conductor. The direction of the magnetic field generated by the eddy current is opposite to the original direction of the magnetic field, and the magnetic flux of the original plane coil is counteracted, so that the inductance of the plane coil is reduced.
Specific eddy current sensors are additionally arranged on two symmetrical sides in the oil liquid loop, wherein a high-frequency alternating signal is applied to a planar coil (a test coil) on one side, and at the moment, a magnetizing effect and an eddy current effect exist simultaneously, so that an alternating magnetic field can be generated, the frequency of an LC oscillating circuit can be changed by the magnetizing effect and the eddy current effect, and the sizes and the accumulated quantity of the adsorbed ferromagnetic metal particles and non-ferromagnetic metal particles in unit time can be reflected. The symmetrical sides apply low-frequency alternating signals to the planar coil, and ferromagnetic metal particles appearing in the test area generate eddy currents so that the inductance of the planar coil is reduced, and therefore the size and the number of the ferromagnetic metal particles in unit time can be reflected. Thus, the second eddy current sensor 5 can reflect the whole property of ferromagnetic particles in the region, and the difference between the information of the first eddy current sensor 2 and the information of the second eddy current sensor 5 can reflect the whole property of non-ferromagnetic metal particles in the oil.
Through the utility model discloses a fluid metal particle detection device based on high low frequency excitation can carry out the monitoring of fluid metal particle on line, can detect the concentration of ferromagnetic metal particle and ferromagnetic metal particle's size in the fluid, distinguishes ferromagnetic metal particle and non-ferromagnetic metal particle in the detection fluid, consequently the utility model discloses can monitor ferromagnetic metal particle and non-ferromagnetic metal particle simultaneously.
In this embodiment, the first eddy current sensor 2 further includes a first single chip 22, the first single chip 22 is connected to the first PCB coil 211, and the first single chip 22 has a first inductance detection module 221 built therein. The first eddy current sensor 2 and the first connector 3 are connected by a first connecting wire 23.
In this embodiment, the second eddy current sensor 5 further includes a second single chip microcomputer 52, the second single chip microcomputer 52 is connected to the second PCB coil 511, and a second inductance detection module 521 is disposed in the second single chip microcomputer 52. The second eddy current sensor 5 and the second connector 6 are connected by a second connecting wire 53.
In this embodiment, the first single-chip microcomputer 22 and the second single-chip microcomputer 52 are both implemented by using a structure in the prior art, and are not described here.
In this embodiment, this fluid metal particle detection device based on high low frequency excitation still includes lubricating oil driving pump 7, lubricating oil return circuit 8, adapter 9 and oil circuit piece 10, and lubricating oil driving pump 7 is connected with lubricating oil return circuit 8, and lubricating oil return circuit 8 loops through adapter 9 and oil circuit piece 10 and is connected with symmetry detection region 1. The lubrication oil circuit 8 is constituted by a closed oil pipe.
When the lubricating oil drives the pump 7 to work, the lubricating oil loop 8 is communicated with the upper computer 4 to normally run, and the first vortex sensor 2 and the second vortex sensor 5 are communicated with the upper computer. When metal particles in oil pass through the symmetrical detection area 1, the inductance and the eddy current exist at the same time, the information from the ferromagnetism and the non-ferromagnetism can be detected by applying high-frequency excitation to the first eddy current sensor 2, the upper computer 4 connected with the first eddy current sensor can detect the frequency change of the ferromagnetism and the non-ferromagnetism, the second eddy current sensor 5 can only detect the ferromagnetic information due to only low-frequency excitation in the symmetrical detection area 1, and the upper computer 4 connected with the second eddy current sensor can only detect the frequency change of the ferromagnetism. According to the difference value of the frequency changes of the first eddy current sensor 2 and the second eddy current sensor 5, namely the information of the non-ferromagnetic metal particles B in the oil liquid, the non-ferromagnetic metal particles B in the oil liquid can be detected by the method, and the ferromagnetic metal particles A and the non-ferromagnetic metal particles B in the oil liquid can be distinguished on the basis of detecting the non-ferromagnetic metal particles B in the oil liquid.
In summary, in this embodiment, utilize high low frequency excitation to distinguish ferromagnetic and non-ferromagnetic, the utility model discloses can monitor ferromagnetic metal particle and non-ferromagnetic metal particle simultaneously.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A high-low frequency excitation-based oil metal particle detection device is characterized by comprising a symmetrical detection area, a first eddy current sensor, a first connector, an upper computer, a second eddy current sensor and a second connector, wherein the symmetrical detection area comprises a first detection area and a second detection area, the first eddy current sensor is arranged on one side of the first detection area, the first eddy current sensor is connected with the upper computer through the first connector and receives a high-frequency excitation signal applied by the upper computer, the second eddy current sensor is arranged on one side of the second detection area, the second eddy current sensor is connected with the upper computer through the second connector and receives a low-frequency excitation signal applied by the upper computer, the first eddy current sensor comprises a first LC (inductance-capacitance) oscillation circuit, the first LC oscillation circuit comprises a first PCB (printed circuit) coil and a first capacitor which are connected in parallel, the second eddy current sensor includes a second LC tank circuit including a second PCB coil and a second capacitor connected in parallel.
2. The oil metal particle detection device based on high-low frequency excitation of claim 1, wherein the first eddy current sensor further comprises a first single chip microcomputer, the first single chip microcomputer is connected with the first PCB coil, and a first inductance detection module is arranged in the first single chip microcomputer.
3. The oil metal particle detection device based on high-low frequency excitation according to claim 2, wherein the first eddy current sensor is connected with the first connector through a first connecting wire.
4. The oil metal particle detection device based on high-low frequency excitation of claim 1, wherein the second eddy current sensor further comprises a second single chip microcomputer, the second single chip microcomputer is connected with the second PCB coil, and a second inductance detection module is arranged in the second single chip microcomputer.
5. The oil metal particle detection device based on high-low frequency excitation according to claim 4, wherein the second eddy current sensor is connected with the second connector through a second connecting wire.
6. The oil metal particle detection device based on high and low frequency excitation of claim 5, wherein the first PCB coil and the second PCB coil are both planar coils.
7. The high and low frequency excitation-based oil metal particle detection device according to any one of claims 1 to 6, further comprising a lubricant oil driving pump, a lubricant oil loop, an adapter and an oil loop block, wherein the lubricant oil driving pump is connected with the lubricant oil loop, and the lubricant oil loop is connected with the symmetrical detection area through the adapter and the oil loop block in sequence.
8. The oil metal particle detection device based on high and low frequency excitation according to claim 7, wherein the lubricating oil loop is formed by a closed oil pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922493577.1U CN211927620U (en) | 2019-12-30 | 2019-12-30 | Oil metal particle detection device based on high-low frequency excitation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922493577.1U CN211927620U (en) | 2019-12-30 | 2019-12-30 | Oil metal particle detection device based on high-low frequency excitation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211927620U true CN211927620U (en) | 2020-11-13 |
Family
ID=73327429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922493577.1U Active CN211927620U (en) | 2019-12-30 | 2019-12-30 | Oil metal particle detection device based on high-low frequency excitation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211927620U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111024575A (en) * | 2019-12-30 | 2020-04-17 | 广研检测（广州）有限公司 | Oil metal particle detection device based on high-low frequency excitation |
-
2019
- 2019-12-30 CN CN201922493577.1U patent/CN211927620U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111024575A (en) * | 2019-12-30 | 2020-04-17 | 广研检测（广州）有限公司 | Oil metal particle detection device based on high-low frequency excitation |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111024574A (en) | Oil metal particle detection device based on permanent magnet and high-frequency excitation | |
| CN111024575A (en) | Oil metal particle detection device based on high-low frequency excitation | |
| Sun et al. | Online oil debris monitoring of rotating machinery: A detailed review of more than three decades | |
| JP2865857B2 (en) | Metal broken particle detector in circuit | |
| CN111024591A (en) | Online detection device for improving sensitivity of metal ferromagnetic particles in oil | |
| Shi et al. | An impedance debris sensor based on a high-gradient magnetic field for high sensitivity and high throughput | |
| CN103235036B (en) | Based on pick-up unit and the method for the differentiation inside and outside wall defect of electromagnetic detection signal | |
| CN102200528B (en) | On-line detection device for broken wires of wire ropes | |
| CN108152361B (en) | Online engine oil metal abrasive particle and temperature integrated monitoring device and method | |
| Shi et al. | A multi-function sensor for online detection of contaminants in hydraulic oil | |
| CN109813761B (en) | Inductance magnetic plug type oil liquid on-line monitoring device | |
| Shi et al. | An integrated inductive-capacitive microfluidic sensor for detection of wear debris in hydraulic oil | |
| CN104502242A (en) | On-line abrasive particle monitoring method and monitoring sensor based on bilateral symmetric structure of the radial magnetic field | |
| CN211927620U (en) | Oil metal particle detection device based on high-low frequency excitation | |
| CN102230872A (en) | Device and method for on-line testing of grade of magnetic iron in flowing ore pulp | |
| CN213022751U (en) | Oil metal particle detection device based on permanent magnet and high-frequency excitation | |
| CN1053679A (en) | The diagnostic filter of conductor and semiconductive particles in the detection liquid stream | |
| CN111505726A (en) | Device and method for detecting pipeline liquid magnetic different medium based on symmetrical magnetic excitation structure | |
| CN115165684A (en) | Electromagnetic type oil abrasive particle on-line monitoring device | |
| CN206479431U (en) | Oil liquid monitoring sensor and equipment | |
| Muthuvel et al. | A planar inductive based oil debris sensor plug | |
| CN105181534A (en) | Oil wear debris monitoring sensor with vibration signal output characteristic and on-line oil monitoring system | |
| CN110108454A (en) | A kind of lubricating oil metal particle sensor | |
| CN111504857B (en) | Magnetic dissimilar medium detection system based on symmetric magnetic excitation | |
| CN112986343B (en) | High magnetic conductive material inductance-electric capacity binary channels fluid detection device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |