Method for online wear particle monitoring by adoption of electrification, electric control loop adsorption and adjacent capacitance

Abstract

The invention relates to an on-line monitoring method of wear particles using electrification, electric control ring adsorption and adjacent capacitors, which sequentially passes 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 monitoring module and the degaussing module perform on-line 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 type adsorption ring. 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 online monitoring method for wear particles in hydraulic pipeline oil, in particular to an online monitoring method for wear particles using electrification, electric control ring adsorption and adjacent capacitors, and belongs to the technical field of hydraulic systems. 【Background technique】 [0002] The wear particles in the oil of the hydraulic system can not only cause abrasive wear on the moving pair, but also block the relative movement of the moving pair and cause the control component to malfunction. Statistics at home and abroad show that 70% of hydraulic machinery failures are caused by oil particle pollution. Therefore, online 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 machine oil pollution monitoring because of their convenient production and low cost. Patent Document 1 (Chinese Invention Patent Auth...

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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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