Abrasion particle monitoring device using temperature control, electronic control ring adsorption and adjacent capacitance

Abstract

The invention relates to an abrasion particle monitoring device using temperature control, electronic control ring adsorption and adjacent capacitance. A temperature control module, a magnetization module, a mechanical centrifugal module, an adsorption module, an adjacent capacitance particle monitoring module and a demagnetization module of the abrasion particle monitoring device are sequentially connected. An oil inlet is formed in one end of the temperature control module. The adsorption module is particularly a homopolar adjacent type adsorption ring. According to the abrasion particle monitoring device, the adjacent capacitance sensor technology based on the capacitance fringe effect is introduced, and non-invasion and unrestraint monitoring of abrasion particles is achieved; the abrasion particles in oil are magnetized and gathered into large particles through magnetizing and mechanical centrifuging and move to the portion nearby a pipe wall to be adsorbed by the adsorption module, and therefore the output monitoring signal intensity of an adjacent capacitance sensor can be improved; and by arranging the temperature control module and reasonably designing the pole plate layer structure of the adjacent capacitance sensor, noise is restrained and the overall performance of the 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 temperature control, electric control ring adsorption and adjacent capacitors, belonging 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 Pa...

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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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