Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A microchannel-based method for detecting metal abrasive particles in oil under DC electric field

A technology of metal abrasive particles and DC electric field, applied in the field of microfluidics, can solve the problem of insufficient detection accuracy of metal abrasive particles, achieve the effect of eliminating a small amount of water, eliminating detection interference, and improving the detection range

Inactive Publication Date: 2018-07-31
DALIAN MARITIME UNIVERSITY
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The embodiment of the present invention provides a method for detecting metal abrasive particles in oil based on a microchannel under a direct current electric field, so as to overcome the problem in the prior art that the detection accuracy of metal abrasive particles in oil is not high enough

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A microchannel-based method for detecting metal abrasive particles in oil under DC electric field
  • A microchannel-based method for detecting metal abrasive particles in oil under DC electric field
  • A microchannel-based method for detecting metal abrasive particles in oil under DC electric field

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0026] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0027] figure 1 For the present invention is based on the flow chart of the method for detecting metal abrasive particles in the oil under the DC electric field based on the microchannel, as figure 1 As shown, the method of the present embodiment includes:

[0028] Step 101. Drop the sampled oil into the two storage tanks of the focusing channel...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a method for detecting metal abrasive particles in oil in a direct-current electric field on the basis of microchannels. The method comprises steps as follows: sampled oil is dropped in two liquid storage tanks of focusing channels respectively, and after a main channel and detection channels are soaked with to-be-sampled oil, the same volume of to-be-detected sample oil containing an ionic surfactant and the metal abrasive particles is dropped into a first liquid storage tank; a signal amplification circuit is connected, and the voltage value of a direct-current power supply is adjusted; the metal abrasive particles in the to-be-detected oil pass by a detection area, the resistance of oil in the detection area changes, current in the main channel changes, and voltage pulse signals generated at two ends of the channel are detected, pass by the signal amplification circuit and are transmitted to a signal acquisition unit; a processor determines the number and the size of the metal particles contained in the to-be-detected sample according to signals acquired by the signal acquisition unit. The particles are detected on basis of change of system resistance when the particles pass the detection area, and the detection accuracy of the abrasive particles in the oil is improved.

Description

technical field [0001] The embodiment of the present invention relates to the field of microfluid technology, and in particular to a method for detecting metal abrasive particles in oil based on a microchannel under a DC electric field. Background technique [0002] Hydraulic oil and lubricating oil play the role of power transmission and lubrication in various mechanical equipment. The friction of each working pair produces a large number of particles during the working process, among which metal particles are the main pollutants and cause excessive wear on the working surface of the equipment and reduce the function of the components. Even failure. Statistics show that more than 75% of hydraulic system failures, 35% of diesel engine failures, 38.5% of gear failures, and 40% of rolling bearing failures are all caused by lubricating oil failures. Therefore, it is particularly important to regularly monitor the cleanliness of the oil and detect the concentration and particle...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G01N15/02G01N15/06
CPCG01N15/0266G01N15/0656G01N2015/0687
Inventor 张君彦宋永欣
Owner DALIAN MARITIME UNIVERSITY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com