Inductance magnetic plug type oil online monitoring device
A monitoring device and oil technology, applied in the direction of material impedance, etc., can solve the problem of non-magnetic metal particles being invalid
Active Publication Date: 2019-05-28
DALIAN MARITIME UNIVERSITY
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Problems solved by technology
Using the magnetic plug method can judge the nature of the system fault by judging the particle type, shape, particle size and color. It is suitable for online detection of mechanical equipment par
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[0034] Such as Figure 1-3 As shown, the structure diagram of the monitoring unit of the inductive magnetic plug type oil online monitoring device of the present invention includes a permanent magnet, a sealing element and a solenoid; the permanent magnet is a long cylinder with a diameter of 5-10mm and a length of 10-50mm, and a spiral The tube is evenly and tightly wound on the permanent magnet. The solenoid is wound by enameled wire, the diameter of the enameled wire is 50-200μm, and the number of turns is 100-500.
[0035] As a preferred embodiment of the present invention, such as Figure 4 As shown, the above-mentioned monitoring unit is arranged in the cross-sectional view of the oil pipeline, and the monitoring unit and the oil pipeline are sealed by a sealing element; the sealing element is mainly used to seal the gap between the pipeline and the device to prevent oil leakage, Metal particle contaminants flow through the monitoring unit from the oil pipeline.
[0036] As ...
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Abstract
The invention provides an inductance magnetic plug type oil online monitoring device which comprises a monitoring unit and a simulation-detection unit. The monitoring unit comprises a permanent magnet, a sealing element and a spiral pipe. The spiral pipe is evenly wound on the permanent magnet and connected with the simulation-detection unit through an insulation wire. The monitoring unit is arranged in an oil pipeline. The monitoring unit and the oil pipeline are sealed by the sealing element. Metal particles flow through the monitoring unit through the oil pipeline. When the monitoring unitconducts inductance measurement, the simulation-detection unit exerts high-frequency alternating currents on the spiral pipe; when ferrous magnetic particles pass through the monitoring unit, forwardinductance signal pulses are generated due to the magnetization effect; when nonferrous magnetic particles pass through the monitoring unit, backward inductance signal pulses are generated due to thevortex effect. According to the technical scheme, the ferrous magnetic and nonferrous magnetic particles in oil are monitored at the same time, the detection precision can reach 50 micron, and an alarm is given when the monitoring signals exceed the specified limit value.
Description
Technical field [0001] The invention relates to the technical field of equipment oil system fault monitoring, and in particular to an inductive magnetic plug type oil online monitoring device. Background technique [0002] As the "blood" of the hydraulic system, oil is not only the working medium for transferring energy, but also reduces the friction between hydraulic components, cools the hydraulic components, reduces the temperature rise of the hydraulic system, slows down the surface oxidation of the hydraulic components, and prolongs the use of the equipment Life, reducing hydraulic equipment vibration, damping and anti-corrosion and anti-rust effects. The particle pollutants in the oil are the main cause of hydraulic system failure. By monitoring the performance and status of the hydraulic oil, you can get the relevant information about the oil particle contaminants, and issue an alarm in time to remind the staff to replace the hydraulic oil to avoid environmental pollution...
Claims
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Inventor 张洪朋赵旭鹏曾霖虞子雷白晨朝
Owner DALIAN MARITIME UNIVERSITY