Method for monitoring wear particles on line by virtue of electrification, electric hammer adsorption and adjacent capacitance

Abstract

The invention relates to an on-line monitoring method of wear particles using electrification, electric hammer adsorption and adjacent capacitors, which sequentially monitors the particles through a temperature control module, an electrification module, an electric field centrifugal module, a mechanical centrifugal module, an adsorption module, and adjacent capacitor particles The module and the degaussing module carry out online monitoring of wear particles; one end of the temperature control module is provided with an oil inlet; the adsorption module is specifically a homopolar adjacent adsorption ring with an electric hammer. The invention introduces adjacent capacitive sensor technology based on capacitive edge effect to realize non-invasive and unconstrained monitoring of wear particles; through electrification, electric field centrifugation and mechanical centrifugation modules, the wear particles in the oil are aggregated into large particles and move to the pipe wall Adjacent and adsorbed by the adsorption module to increase the output monitoring signal strength of the adjacent capacitive sensor; through the temperature control module and the rational design of the adjacent capacitive sensor plate layer structure, suppress noise and optimize the overall performance of the adjacent capacitive sensor monitoring device.

Description

【Technical field】 [0001] The invention relates to an on-line monitoring method for wear particles in hydraulic pipeline oil, in particular to an on-line monitoring method for wear particles using electrification, electric hammer adsorption 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 Inven...

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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.

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