Oil trace moisture on-line monitoring sensor

Abstract

The invention discloses an oil trace moisture on-line monitoring sensor. The oil trace moisture on-line monitoring sensor comprises a high polymer thin-film capacitor, a temperature sensor, a signal processing circuit board and a mechanical seal structure, wherein the high polymer thin-film capacitor and the temperature sensor are used for measuring the content and the temperature of oil trace moisture respectively, the signal processing circuit board is used for detecting and processing output signals of the high polymer thin-film capacitor and the temperature sensor and converting the output signals into content and temperature values of oil moisture, and the mechanical seal structure comprises a protection sleeve, a mechanical shell, a gold-plating wire, a connector member, a fixation screw, an end cover and the like and is used for supporting and protecting an inside structure and preventing pollution caused by entry of oil. According to the oil trace moisture on-line monitoring sensor, the purpose of real-timely monitoring aviation oil moisture is achieved, and the oil trace moisture on-line monitoring sensor has the advantages of being small in size, light, simple in operation, and the like.

Description

technical field [0001] The invention relates to the technical field of online monitoring of oil, in particular to an online monitoring sensor for trace moisture in oil. Background technique [0002] When aircraft oil (mainly lubricating oil, hydraulic oil, and fuel oil) is polluted by water, it will seriously affect the safety performance of flight, and may even cause serious accidents. Oil is like the "blood" of an aircraft. The health of the oil reflects the health of the aircraft to a certain extent. Therefore, real-time monitoring of the health of the oil is very important for real-time diagnosis and prediction of aircraft failures. The water content of the oil is one of the important parameters to evaluate whether the aircraft can work normally. The detection of the water content in the oil is very important. The test results can be provided to the aircraft PHM system, combined with other parameters, to evaluate the health of the aircraft and predict its life. . [00...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a simple-structure oil trace moisture online monitoring sensor, improve the accuracy and anti-interference ability of the online oil moisture monitoring method, and solve the shortcomings of the existing monitoring methods

The beneficial effects of the present invention mainly lie in: the present invention is based on the principle of polymer film capacitance, small in size, light in weight, easy to operate, high in sensitivity to oil moisture signal monitoring, strong in anti-interference ability, real-time on-line monitoring, and not limited by oil types It solves the problems of cumbersome steps, long verification period and high detection cost in the existing laboratory monitoring method, and is suitable for online monitoring of aircraft oil, and also suitable for real-time monitoring of oil moisture in lubrication systems and hydraulic systems of various military and civilian machinery and equipment

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