Wear particle monitoring equipment using hydraulic filtration, centrifugation and adjacent capacitance

Abstract

The invention relates to a wear particle monitoring device using hydraulic filtering, centrifugal separation and adjacent capacitors, including a filter, a temperature control module, a magnetization module, a mechanical centrifugal module, a rotating magnetic field centrifugal module, an adsorption module, and an adjacent capacitor particle monitoring module It is connected with the degaussing module in turn; the filter adopts a variable structure working condition adaptive filter, and one end of it is provided with an oil inlet; one end of the degaussing module is provided with an oil outlet. The invention introduces adjacent capacitive sensor technology based on capacitive edge effect to realize non-invasive and unconstrained monitoring of wear particles; through magnetization, mechanical centrifugation and rotating magnetic field centrifugal module, the wear particles in the oil are magnetized, aggregated into large particles and moved to Near the pipe wall and adsorbed by the adsorption module to improve the output monitoring signal strength of the adjacent capacitive sensor; through the temperature control module and the reasonable design of the plate layer structure of the adjacent capacitive sensor, the noise is suppressed and the overall monitoring device of the adjacent capacitive sensor is optimized performance.

Description

【Technical field】 [0001] The invention relates to an online monitoring device for wear particles in hydraulic pipeline oil, in particular to a wear particle monitoring device 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 Patent Aut...

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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