Multi-parameter oil detecting device and manufacturing method thereof

Abstract

The patent of the invention discloses a multi-parameter oil detecting device and a manufacturing method thereof. The detecting device is used for distinguished detecting ferromagnetic metal particles,non-ferromagnetic metal particles, water drops and bubbles in oil. Based on a manufacturing method of a micro-fluidic chip, the dead center of a micro-channel is filled with a metal rod for the firsttime, and a capacitance detection mode is introduced; a ring runner is arranged in the micro-fluidic chip for the first time, an inner hole of a planar inductance coil is sufficiently used, metal particles are enabled to pass through a most sensitive detection area, and the detection flux of the chip is improved when the detection precision is ensured; and a vertical runner is adopted to reduce the adhesion possibility of pollutants in oil on the wall of the runner, and the deposition and blockage of the pollutants in the runner are effectively prevented. The chip can complete the distinguished detection of particulate pollutants in lubricating oil and hydraulic oil, a new method is provided for comprehensive rapid detection of machines and devices on oil, and fault diagnosis can be performed on the machines and the devices.

Description

technical field [0001] The invention relates to the technical field of equipment oil system fault detection, in particular to a multi-parameter oil detection device and a manufacturing method thereof. Background technique [0002] The failure of the hydraulic system is caused by the pollution of the hydraulic oil. The pollutants in the hydraulic oil mainly come from the residual and generated pollutants in the hydraulic system and the pollutants intruded from the outside. The pollutants are mainly solid particles, water and air bubbles. The detection of pollutants in the oil can not only accurately evaluate the operating status of the hydraulic system, but also diagnose system failures based on the nature of the pollutants. The testing methods for oil particle pollutants mainly include optical detection, acoustic detection, inductance detection and capacitance detection. Optical detection method has the characteristics of high detection sensitivity and fast speed, but it is...

AI Technical Summary

Problems solved by technology

The optical detection method has the characteristics of high detection sensitivity and fast speed, but it is easily affected by the oil transmittance, and cannot distinguish the properties of particle pollutants

Acoustic detection method is easily disturbed by background noise and oil temperature fluctuations, and ultrasonic waves will split particles into smaller particles, causing secondary pollution of oil

The inductance method can distinguish between ferromagnetic particles and non-ferromagnetic particles, but it cannot detect non-metallic particles

Capacitance method has high detection accuracy and can distinguish and detect air bubbles in hydraulic oil, but cannot distinguish metal abrasive particles

All of the above methods can only detect one or two types of particles in the oil, and cannot perform comprehensive detection.

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