An online oil wear particle monitoring sensor and its manufacturing method

Abstract

The invention discloses an online oil abrasive particle monitoring sensor and a manufacturing method thereof. The main pipeline of the online oil abrasive particle monitoring sensor is divided into several manifolds in the abrasive particle detection pipe section, each manifold has a sensor, The branch manifolds are uniformly or unevenly distributed according to a certain angle, and the diameter of the manifolds is 0.05 to 0.9 times that of the main path, and the branch manifolds can be one or more stages. The method realizes the manufacture of the on-line oil abrasive particle monitoring sensor by adopting the MEMS micro mechanical electronic system method. The invention realizes the online full flow detection of large flow, and improves the detection resolution to 10 microns at the same time, and when connected to the lubricating main pipeline with a diameter of 7cm-10cm, the resulting pressure loss is less than 0.3MPa.

Description

technical field [0001] The invention relates to the field of online oil monitoring, in particular to an online oil abrasive monitoring sensor and a manufacturing method thereof. Background technique [0002] On-line oil monitoring is an important method for early fault detection of mechanical equipment. The real-time oil analysis sensor is an oil analysis instrument. It detects the operation of mechanical equipment in real time by detecting the size, quantity, material and shape of abrasive particles in the oil, and timely predicts potential failures to avoid catastrophic damage or use. Equipment in normal operation reduces unnecessary maintenance, thereby increasing production value and profitability. [0003] The application number is 201010582409, and the publication number is CN102331389A, which discloses a high-sensitivity online monitoring sensor for oil abrasive particles. The technical solution is to reverse the winding direction and connect the first input magnetic...

AI Technical Summary

Problems solved by technology

[0004] The disadvantages of the sensor are: 1. The particle size detection sensitivity is low <300 microns; 2. The shape of the abrasive particles cannot be detected; 3. When the oil flows, it is easy to cause the oil in the pipeline to be not full, and the sensor detects background signal changes, affecting Detection accuracy

[0006] The disadvantages of this sensor are: 1. The oil pipeline is thin, and full flow detection cannot be realized, and a small amount of large particles that suddenly appear cannot be guaranteed to be detected; and a small amount of large particle metal wear debris of 50 to 200 microns is caused by the fatigue of the surface layer of the friction pair. Peeling, severe sliding wear and shear wear, etc., can most directly reflect abnormal fault information

2. The shape of abrasive particles cannot be detected; 3. When the oil flow rate changes, the oil is prone to turbulent flow, which makes the position of abrasive particles in the pipeline change rapidly and affects the detection

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