Online wear particle monitoring system adopting electric shock hammer adsorption and adjacent capacitance

Abstract

The invention relates to an online wear particle monitoring system adopting electric shock hammer adsorption and adjacent capacitance. The system comprises a temperature control module, a magnetization module, an absorption module, an adjacent capacitance particle monitoring module and a demagnetization module which are sequentially connected, wherein a liquid oil inlet is formed in one end of the temperature control module; the absorption module is specifically a homopolar adjacency type absorption ring provided with an electric shock hammer. The online wear particle monitoring system introduces an adjacent capacitance transducer technology based on a capacitance edge effect, thus realizing non-intrusive and unconstrained monitoring for wear particles; the wear particles in liquid oil are magnetized by the magnetization module and are absorbed by the absorption module, so that the intensities of monitoring signals output by an adjacent capacitance transducer are improved; by arranging the temperature control module and reasonably designing an adjacent capacitance transducer polar plate layer structure, noise suppression is realized and the whole performance of an adjacent capacitance transducer monitoring device is optimized.

Description

【Technical field】 [0001] The invention relates to an online monitoring system for wear particles in hydraulic pipeline oil, in particular to an online monitoring system for wear particles using 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 Invention Patent Authori...

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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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