On-line detection sensor for content of ferromagnetic abrasive particles in lubricating oil

Abstract

The invention relates to an on-line detection sensor for content of ferromagnetic abrasive particles in lubricating oil, and belongs to the technical field of measurement instruments. A filtering sheet is fixed between a lower filtering sheet clamping plate and an upper filtering sheet clamping plate; square holes are respectively formed in the centers of the lower filtering sheet clamping plate and the upper filtering sheet clamping plate, and the sizes of the square holes are equal to that of an oil path channel of the detection sensor; square holes are respectively formed in the left side and the right side of the upper filtering sheet clamping plate. Current input and output electrodes and front and rear detection electrodes are respectively fixed in the square holes of the upper filtering sheet clamping plate through electrode fixing plates. According to the on-line detection sensor, by design of serially connected carbon fiber filtering nets with different apertures, the content of the ferromagnetic abrasive particles with various particle sizes in the liquid can be simultaneously measured on line; furthermore, the analysis speed is high, and the test precision is higher; due to the carbon fiber filtering sheet used in the sensor, the resistivity of carbon fibers is extremely small in temperature change, so that the application temperature range of the sensor is large, and the application field of the sensor is expanded.

Description

technical field [0001] The invention relates to an on-line detection sensor for the content of ferromagnetic abrasive grains in lubricating oil, belonging to the technical field of measuring instruments. Background technique [0002] The vast majority of mechanical parts are made of ferrous materials. In actual mechanical operation, due to the occurrence of friction and wear, the material on the moving surface usually falls off in the form of wear particles and melts into the lubricating oil. The mechanical wear process is generally divided into three stages, namely, running-in wear, stable wear and severe wear. The normal operation of machinery usually occurs stable wear, and its wear amount is small. When the wear rate of the material increases suddenly, especially when the large-size ferromagnetic abrasive particles appear in the lubricating oil, it often indicates the occurrence of severe wear. If it is not repaired in time, it will cause failure. Detecting the conte...

AI Technical Summary

Problems solved by technology

From the above content, it can be seen that although the magnetic field type ferromagnetic particle sensor can realize online measurement of oil, it cannot distinguish the particle size of the measured ferromagnetic particle, which has limitations in use.

Images