Wear particle monitoring method using filtering, electromagnetic centrifugal separation and adjacent capacitance

Abstract

The invention relates to a wear particle monitoring method using filtering, electromagnetic centrifugal separation and adjacent capacitance. Wear particles are monitored by a filter, a temperature control module, a magnetization module, a cyclone centrifugal module, a rotating magnetic field centrifugal module, an adsorption module, an adjacent capacitive particle monitoring module and a degaussing module sequentially; a working condition adaptive filter is used as the filter, and an oil inlet is formed in one end of the filter; an oil outlet is formed in one end of the degaussing module. According to the wear particle monitoring method, an adjacent capacitive sensor technology based on the capacitance edge effect is introduced, and wear particle non-intrusive and unconstrained monitoring is realized; wear particles in oil are magnetized and polymerized into large particles by the magnetization module, the cyclone centrifugal module and the rotating magnetic field centrifugal module, move to the vicinity of a pipe wall and are absorbed by the adsorption module, so that the strength of monitoring signals output by an adjacent capacitive sensor is improved; noise is restrained and the whole performance of the adjacent capacitive sensor monitoring device is optimized by the temperature control module and a reasonably designed adjacent capacitive sensor polar plate layer structure.

Description

【Technical field】 [0001] The invention relates to an online monitoring method for wear particles in hydraulic pipeline oil, in particular to a method for monitoring wear particles using filtering, electromagnetic centrifugal separation and adjacent capacitors, and belongs to the technical field of hydraulic systems. 【Background technique】 [0002] The wear particles in the hydraulic system oil can not only cause abrasive wear of the kinematic pair, but also hinder the relative movement of the kinematic pair, resulting in malfunction of the control components. Statistics at home and abroad show that 70% of hydraulic machinery failures come from particle pollution of oil. Therefore, on-line monitoring of wear particles in oil has become one of the important ways to reduce wear and hydraulic system failures. [0003] Capacitive sensors are used in the pollution monitoring of machine oil because of their convenient fabrication and low cost. Patent Document 1 (Chinese Invention...

AI Technical Summary

Problems solved by technology

The distance between the excitation plate and the receiving plate of the capacitive sensor is limited by the diameter of the hydraulic pipe. Due to the relatively large diameter of the hydraulic pipe, the sensitivity of the sensor is not ideal.

[0005] At the same time, the violent fluctuation of the fluid in the online monitoring equipment of the wear particles in the prior art will lead to large fluctuations in the monitoring data and lead to monitoring failure

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