Online oil way abrasive particle monitoring device

Abstract

The invention discloses an online oil way abrasive particle monitoring device. An amplitude difference and a phase difference of excitation signals on two groups of excitation coils of an oil way abrasive particle sensor are adjusted during initially electrifying, so that the polarities of magnetic fields generated by the two excitation coils of the oil way abrasive particle sensor are reversed and neutralized in a middle detection coil. Consequently, when oil liquid without abrasive particles passes through the oil way abrasive particle sensor under ordinary circumstance, only a small carrier signal is output from the detection coil; when oil liquid with abrasive particles passes through the sensor, generated abrasive particle signals are modulated on the carrier signal and subsequently transmitted into a signal detecting circuit to amplify and demodulate, so that effective abrasive particle signals can be acquired; the abrasive particle signals are transmitted to a DSP (Digital Signal Processor) to process so as to acquire parameters, such as the size, the number and the material, of the abrasive particles; and due to the parameters, the abrasion condition of a monitored mechanical device is reflected, so that the health condition of the monitored device is acquired in real time and the online monitoring on the oil way abrasive particles is realized.

Description

technical field [0001] The invention belongs to the technical field of abrasive particle monitoring, and more specifically relates to an online oil circuit abrasive particle monitoring device. Background technique [0002] Today, with the continuous improvement of the automation level of mechanical equipment, the complexity of mechanical equipment is also increasing. However, various mechanical equipment failures are emerging in an endless stream, and the types are also diverse. The performance degradation or functional failure caused by fatigue damage caused by long-term operation of mechanical equipment has become the main cause of various failures. For example, the rotating parts of mechanical equipment are damaged due to cutting and wear caused by the mutual friction of the contact surfaces, and the degree of damage increases with time. According to the statistics of the Civil Aviation Administration of China, the ratio of major flight accidents caused by mechanical fai...

AI Technical Summary

Problems solved by technology

At present, the relatively mature monitoring methods of lubricating oil wear particles at home and abroad mainly include spectroscopy, ferrography, energy spectroscopy, particle counting and magnetic plug method, but most of them belong to offline measurement. Shortcomings such as strict process requirements, cannot be detected quickly and continuously to reflect the operating status of the machine in time

Due to the limitation of the number of samples taken, it is also difficult to obtain a representative oil sample when taking oil

Some equipment is bulky, complex in structure, and relatively expensive

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