Abrasion particle monitoring equipment using filter waves, electromagnetic centrifugation and adjacent capacitances

Abstract

The invention relates to abrasion particle monitoring equipment using filter waves, electromagnetic centrifugation and adjacent capacitances. A filter, a temperature control module, a magnetization module, a mechanical centrifugal module, a rotating magnetic field centrifugal module, an adsorption module, an adjacent capacitance particle monitoring module and a demagnetization module of the abrasion particle monitoring equipment are sequentially connected. An oil liquid inlet is formed in one end of the filter. An oil liquid outlet is formed in one end of the demagnetization module. According to the abrasion particle monitoring equipment using the filter waves, electromagnetic centrifugation and the adjacent capacitances, the adjacent capacitance sensor technology based on the capacitance edge effect is introduced, and abrasion particle non-intrusive and unconstrained monitoring is achieved; abrasion 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 and move to the position near a pipe wall to be adsorbed by the adsorption module so that the output monitoring signal strength of an adjacent capacitance sensor can be improved; and through the temperature control module and reasonable design of the polar plate layer structure of the adjacent capacitance sensor, noise is suppressed, and the overall performance of an adjacent capacitance sensor monitoring device is optimized.

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 filtering, electromagnetic centrifugation 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 Autho...

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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