A multi-signal synchronous feedback device for oil detection

A feedback device and detection device technology, which is applied to measurement devices, suspension and porous material analysis, instruments, etc., can solve the problems of limited detection capability and single measurement parameters, and achieve the effect of realizing multi-signal synchronous detection.

Active Publication Date: 2021-12-28
DALIAN MARITIME UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] According to the above-mentioned proposals, aiming at the technical problems of single measurement parameter and limited detection ability of the existing oil detection method, a method with multi-parameter measurement and capable of detecting four types of particle pollutants (ferromagnetic metal particles, non-ferrous particles) in the oil is provided. A multi-signal synchronous feedback device for oil detection with comprehensive discrimination and synchronous detection of magnetic metal particles, water droplets and air bubbles. The device of the present invention can effectively separate metal particles and prevent metal particles from affecting the capacitance detection results

Method used

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  • A multi-signal synchronous feedback device for oil detection
  • A multi-signal synchronous feedback device for oil detection
  • A multi-signal synchronous feedback device for oil detection

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Embodiment 1

[0041] Such as figure 1 As shown, the present invention provides a multi-signal synchronous feedback device for oil detection, including a detection device and an excitation-detection unit.

[0042]The detection device includes a microfluidic chip. The microfluidic chip includes a substrate 1 and a chip body arranged on the substrate 1. One end of the chip body is provided with a microchannel inlet 3, and the other end is provided with a microchannel 5 with a microchannel outlet 8. The microchannel 5 is also provided with a sensing unit I4, a deposition tank 6, and a sensing unit II7 in sequence; the microfluidic chip also includes a model material 2, and the substrate 1 is placed at the bottom of the microchannel 5 for fixing the microfluidic chip, the sensor unit The sensing unit I4 and the sensing unit II7, the model material 2 is poured on the outside of the microfluidic chip, the sensing unit I4 and the sensing unit II7.

[0043] Such as figure 2 , 3 As shown, the sen...

Embodiment 2

[0049] Such as figure 1 As shown, (on the basis of Embodiment 1), the present invention also provides a method for making a multi-signal synchronous feedback device for oil detection, comprising the following steps:

[0050] S1: Fix the microchannel inlet mold, the microchannel mold, the silicon steel sheet 10 wound with the single-layer coil 9, and two copper rods on the substrate 1 according to a predetermined position;

[0051] S2: pouring the molding material 2 into the substrate 1, wherein the two lead wires connecting the single-layer coil 9 and the two lead wires connecting the copper rods are arranged outside the modeling material 2 so that they are not poured by the modeling material;

[0052] S3: Place the chip poured with the model material 2 in an oven and bake at a temperature of 80° C. for 1 hour, so that the model material 2 is cured;

[0053] S4: Extract the micro-channel mold from the heated and cured model material 2, extract the micro-channel inlet mold to ...

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Abstract

The invention provides a multi-signal synchronous feedback device for oil detection, which includes a detection device and an excitation-detection unit, and the detection device includes a microfluidic chip for distinguishing and detecting ferromagnetic metal particles and non-ferromagnetic metal particles in the oil , water drops and air bubbles. For the first time, a sedimentation tank is set in the chip, which can effectively separate metal particles and non-metal particles, and realize simultaneous detection of four kinds of particle pollutants. The measurement mode switching unit is omitted, and the chip can be directly connected to the excitation-detection unit, which shortens the response time of signal acquisition and makes the detection effect more accurate and efficient. The chip integrates two sensing units into one chip, and realizes the multi-parameter measurement of inductance, resistance and capacitance in the oil, so as to complete the differential detection of various particle pollutants in lubricating oil and hydraulic oil. On-line oil monitoring of machinery and equipment provides an effective method, and can carry out fault diagnosis on machinery and equipment.

Description

technical field [0001] The invention relates to the technical field of equipment oil system fault detection, in particular to a multi-signal synchronous feedback device for oil detection. Background technique [0002] Particle pollutants in oil are the most important cause of hydraulic system failures. Being able to detect information about particle pollutants in oil is a reliable solution for fault diagnosis of equipment systems. The testing methods for oil particle pollutants mainly include optical detection, acoustic detection, inductance detection and capacitance detection. Among them, the optical detection method has high detection accuracy, but it cannot distinguish the properties of particle pollutants, and is limited by the influence of oil transmittance. The acoustic detection method is to detect the particles in the oil by detecting the reflected sound wave, which is seriously affected by the environmental noise and the temperature change of the oil. The inductan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N15/06
CPCG01N15/0656
Inventor 张洪朋史皓天徐志伟曾霖顾长智
Owner DALIAN MARITIME UNIVERSITY
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