Method for monitoring wear particles with hydraulic filtering, centrifugal separation and adjacent capacitors

Abstract

The invention relates to a method for monitoring wear particles with hydraulic filtering, centrifugal separation and adjacent capacitors. Monitoring of wear particles is conducted through a filter, a temperature control module, a magnetization module, a mechanical centrifugal module, a rotating magnetic field centrifugal module, an absorption module, an adjacent capacitor particle monitoring module and a degaussing module in sequence; a variable structure work condition self-adapting filter is adopted for the filter, and one end of the filter is provided with an oil liquid inlet; one end of the degaussing module is provided with an oil liquid outlet. An adjacent capacitor sensor technology based on the capacitor edge effect is introduced, and non-intrusive and no-constraint monitoring of the wear particles is achieved; the wear particles in oil liquid are magnetized and aggregated into large particles through the magnetization module, the mechanical centrifugal module and the rotating magnetic field centrifugal module, move to the position near the pipe wall and are absorbed by the absorption module, so that strength of output monitoring signals of adjacent capacitor sensors is improved; the temperature control module is utilized, polar plate layer structures of the adjacent capacitor sensors are designed reasonably, noise is inhibited, and the overall performance of an adjacent capacitor sensor monitoring device is optimized.

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 hydraulic filtering, 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 Paten...

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

Images