CN110907530A - A high-precision three-coil oil detection sensor and its manufacturing method - Google Patents
A high-precision three-coil oil detection sensor and its manufacturing method Download PDFInfo
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Abstract
本发明提供一种高精度三线圈油液检测传感器，包括：通道入口、检测通道、传感单元、通道出口、传感器外壳；所述传感单元包括：含磁芯的检测线圈、含磁芯的激励线圈I、含磁芯的激励线圈II以及插入所述检测线圈和所述激励线圈中的磁芯；所述检测通道包括并排放置的两管状通道，所述管状通道之间设置有检测线圈；所述检测线圈紧贴所述管状通道的管壁。本发明的高精度三线圈油液检测传感器，通过向检测线圈和两激励线圈中添加磁芯的方式，加强了检测线圈两侧区域的磁场强度，从而提高该装置对于铁磁性颗粒和非铁磁性颗粒的检测精度。
The present invention provides a high-precision three-coil oil detection sensor, comprising: a channel inlet, a detection channel, a sensing unit, a channel outlet, and a sensor housing; the sensing unit comprises: a detection coil containing a magnetic core, an excitation coil I containing a magnetic core, an excitation coil II containing a magnetic core, and a magnetic core inserted into the detection coil and the excitation coil; the detection channel comprises two tubular channels placed side by side, a detection coil is arranged between the tubular channels; the detection coil is in close contact with the wall of the tubular channel. The high-precision three-coil oil detection sensor of the present invention strengthens the magnetic field strength of the areas on both sides of the detection coil by adding a magnetic core to the detection coil and the two excitation coils, thereby improving the detection accuracy of the device for ferromagnetic particles and non-ferromagnetic particles.
Description
Technical Field
The invention relates to the technical field of fault detection of an oil lubricating system of equipment, in particular to a high-precision three-coil oil detection sensor and a manufacturing method thereof.
Background
The fault of the oil lubrication system is mainly caused by the pollution of hydraulic oil. When the equipment normally works, the concentration of the abrasive particles in the lubricating oil is stabilized at a lower level, and the particle size of the abrasive particles is smaller; when equipment takes place abnormal wear, the concentration of grit can show to increase in the lubricating oil, if not change lubricating oil in time, the particle diameter and the concentration of grit can all increase gradually, just can lead to equipment unable normal work when reaching certain degree. The metal abrasive particles contain abundant tribological information including components, shapes, sizes, quantities and the like, and the information plays an important role in judging the abrasion part, the abrasion type, the abrasion process and the abrasion degree of equipment. The method can be used for distinguishing and detecting the metal abrasive particles contained in the lubricating oil, not only can diagnose the positions of the equipment with the wear faults, but also can predict the service life of the mechanical equipment, and has important value for modern fault diagnosis and prediction theories based on information fusion. However, the existing oil detection device has limited detection precision, and how to improve the detection precision is always a research hotspot.
Disclosure of Invention
In view of the above-mentioned problems, a high-precision three-coil oil detection sensor and a method for manufacturing the same are provided. The invention mainly utilizes a high-precision three-coil oil detection sensor, which is characterized by comprising the following components: the device comprises a channel inlet, a detection channel, a sensing unit, a channel outlet and a sensor shell.
Further, the sensing unit includes: a detection coil including a magnetic core, an excitation coil I including a magnetic core, an excitation coil II including a magnetic core, and a magnetic core inserted in the detection coil and the excitation coil; the detection channel comprises two tubular channels which are arranged side by side, and a detection coil is arranged between the two tubular channels; the detection coil is tightly attached to the pipe wall of the tubular passage; the excitation coil I and the excitation coil II are arranged on two sides of the detection coil in a right-to-side mode; and a detection channel is arranged between the excitation coil I/the excitation coil II and the detection coil, and the excitation coil I/the excitation coil II is tightly attached to the detection channel.
Furthermore, when in use, the exciting unit applies high-frequency alternating current excitation to the exciting coil containing the magnetic core; the detection unit acquires the impedance change of the detection coil and transmits and displays the impedance change as a detection signal.
Furthermore, the channel inlet, the detection channel and the channel outlet are all tubular flow channels, the wall thickness is 0.1-1 mm, and the materials are all non-magnetic organic matters. Further, the cross section of the detection channel is rectangular.
Furthermore, the excitation coil I/the excitation coil II is wound by an enameled wire, the inner diameter of the excitation coil I/the excitation coil II is 0.03-5 cm, the wire diameter of the enameled wire is 50-1000 microns, and the number of turns is 20-10000 turns.
Furthermore, the detection coil is wound by enameled wires, the inner diameter of the detection coil is 0.03-5 cm, the wire diameter of the enameled wires is 50-1000 microns, and the number of turns is 20-200 turns.
Further, the present invention also includes a method for manufacturing a high-precision three-coil oil detection sensor, wherein the method is based on the detection device of claim 1, and comprises the following steps:
step S1: adding magnetic cores in the exciting coil and the detecting coil and fixing;
step S2: inserting a detection coil with a magnetic core into a position between two detection channels of the tubular runner mold, wherein excitation coils containing the magnetic core are arranged on two sides of the detection coil in a facing manner, and the detection channels are arranged between the excitation coils and the detection coil;
step S3: and fixing the coil and the runner mold according to a set position, leading out a wire outlet end of the inductance coil, and packaging the shell to finish the sensor.
Compared with the prior art, the invention has the following advantages:
the high-precision three-coil oil detection sensor strengthens the magnetic field intensity of the two side areas of the detection coil by adding the magnetic cores into the detection coil and the two excitation coils, thereby improving the detection precision of the device on ferromagnetic particles and non-ferromagnetic particles. And a rectangular sectional area detection channel is respectively arranged on two sides of the detection coil, so that the detection flux of the sensor is improved, and the detection efficiency is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are 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 view showing the structure of a detecting unit according to the present invention.
Fig. 2 is a structural view of a sensing unit of the present invention.
FIG. 3 is a graph showing the signals obtained from the iron particles measured according to the present invention.
FIG. 4 is a graph showing the signals obtained from the measurement of copper particles in the iron of the present invention.
In the figure, 1: channel inlet, 2: detection channel, 3: sensing unit, 4: channel outlet, 5: sensor housing, 6: excitation coil I, 7: excitation coil II, 8: detection coil, 9: magnetic core I, 10: magnetic core II, 11: and a magnetic core III.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1-4, the present invention comprises a high precision three coil oil detection sensor comprising: channel inlet 1, detection channel 2, sensing unit 3, channel outlet 4, sensor housing 5.
As a preferred embodiment, in the present application, the sensing unit 3 includes: detection coil 8, excitation coil I6, excitation coil II7, magnetic core I9, magnetic core II10 and magnetic core III 11; the detection channel 2 comprises two tubular channels which are arranged side by side, and a detection coil 8 is arranged between the two tubular channels; the detection coil 8 is tightly attached to the pipe wall of the tubular passage; the excitation coil I6 and the excitation coil II7 are arranged at two sides of the detection coil 8 in a right-facing manner; a detection channel is arranged between the excitation coil I6/the excitation coil II7 and the detection coil 8, and the excitation coil I6/the excitation coil II7 are tightly attached to the detection channel.
Preferably, in a preferred embodiment, the excitation means applies high-frequency alternating current excitation to the excitation coil including the magnetic core; the detection unit acquires the impedance change of the detection coil 8 and transmits and displays the impedance change as a detection signal.
In a preferred embodiment, the channel inlet 1, the detection channel 2 and the channel outlet 4 are all tubular flow channels, the wall thickness is 0.1-1 mm, and the materials are all non-magnetic organic materials. The cross section of the detection channel 2 is rectangular.
As a preferred embodiment, the excitation coil I6/the excitation coil II7 are wound by enameled wires, the inner diameter of the excitation coil I6/the excitation coil II7 is 0.03-5 cm, the wire diameter of the enameled wire is 50-1000 micrometers, and the number of turns is 20-10000 turns.
In a preferred embodiment, the detection coil 8 is wound by enameled wires, the inner diameter of the detection coil 8 is 0.03-5 cm, the wire diameter of the enameled wires is 50-1000 microns, and the number of turns is 20-200 turns.
In a preferred embodiment, the present invention further includes a method for manufacturing a high-precision three-coil oil sensor, based on the detection device according to claim 1, including the steps of:
step S1: adding magnetic cores in the exciting coil and the detecting coil and fixing;
step S2: inserting a detection coil with a magnetic core into a position between two detection channels of the tubular runner mold, wherein excitation coils containing the magnetic core are arranged on two sides of the detection coil in a facing manner, and the detection channels are arranged between the excitation coils and the detection coil;
step S3: and fixing the coil and the runner mold according to a set position, leading out a wire outlet end of the inductance coil, and packaging the shell to finish the sensor.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (6)
1. The utility model provides a high accuracy three-coil oil detects sensor which characterized in that includes: the device comprises a channel inlet (1), a detection channel (2), a sensing unit (3), a channel outlet (4) and a sensor shell (5);
the sensing unit (3) comprises: a detection coil (8) including a magnetic core, an excitation coil I (6) including a magnetic core, an excitation coil II (7) including a magnetic core, and a magnetic core inserted in the detection coil and the excitation coil; the detection channel (2) comprises two tubular channels which are arranged side by side, and a detection coil (8) is arranged between the two tubular channels; the detection coil (8) is tightly attached to the pipe wall of the tubular passage; the excitation coil I (6) and the excitation coil II (7) are arranged on two sides of the detection coil (8) in a facing manner; a detection channel is arranged between the excitation coil I (6)/the excitation coil II (7) and the detection coil (8), and the excitation coil I (6)/the excitation coil II (7) are tightly attached to the detection channel;
when in use, the exciting unit applies high-frequency alternating current excitation to the exciting coil containing the magnetic core; the detection unit acquires the impedance change of the detection coil (8) and transmits and displays the impedance change as a detection signal.
2. A high accuracy three coil oil detecting sensor according to claim 1, wherein the channel inlet (1), the detecting channel (2) and the channel outlet (4) are all tubular flow channels, the wall thickness is 0.1-1 mm, and the material is non-magnetic organic matter.
3. A high accuracy three coil oil detection sensor according to claim 1, wherein the cross section of the detection channel (2) is rectangular.
4. A high-precision three-coil oil detection sensor according to claim 1, wherein the excitation coil I (6)/the excitation coil II (7) are wound by enameled wires, the inner diameter of the excitation coil I (6)/the excitation coil II (7) is 0.03-5 cm, the wire diameter of the enameled wires is 50-1000 microns, and the number of turns is 20-10000 turns.
5. A high precision three-coil oil detecting sensor according to claim 1, characterized in that the detecting coil (8) is wound by enameled wire, the inner diameter of the detecting coil (8) is 0.03-5 cm, the wire diameter of the enameled wire is 50-1000 μm, and the number of turns is 20-200 turns.
6. A method for manufacturing a high-precision three-coil oil detection sensor, which is based on the detection device of claim 1, and comprises the steps of:
s1: adding magnetic cores in the exciting coil and the detecting coil and fixing;
s2: inserting a detection coil with a magnetic core into a position between two detection channels of the tubular runner mold, wherein excitation coils containing the magnetic core are arranged on two sides of the detection coil in a facing manner, and the detection channels are arranged between the excitation coils and the detection coil;
s3: and fixing the coil and the runner mold according to a set position, leading out a wire outlet end of the inductance coil, and packaging the shell to finish the sensor.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911230263.0A CN110907530A (en) | 2019-12-04 | 2019-12-04 | A high-precision three-coil oil detection sensor and its manufacturing method |
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| CN201911230263.0A CN110907530A (en) | 2019-12-04 | 2019-12-04 | A high-precision three-coil oil detection sensor and its manufacturing method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115078185A (en) * | 2022-06-10 | 2022-09-20 | 重庆邮电大学 | Oil particle detection sensor based on multi-excitation alternating magnetic field structure and detection method thereof |
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2019
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| US20100109686A1 (en) * | 2008-10-31 | 2010-05-06 | The University Of Akron | Metal wear detection apparatus and method employing microfluidic electronic device |
| CN103217365A (en) * | 2013-03-29 | 2013-07-24 | 电子科技大学 | Online oil way abrasive particle monitoring device |
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Application publication date: 20200324 |