Static magnet-based high-sensitivity metal wear particle online detection sensor

Abstract

The invention discloses a static magnet-based high-sensitivity metal wear particle online detection sensor, which comprises a sensor shell, a non-magnetic material gasket, an inner fixed seat, a first coil base body, a first oil pipe channel, a second oil pipe channel, a second coil base body, an upper strong static magnet, a lower strong static magnet, a first induction coil and a second induction coil. According to the invention, the magnetic poles of an upper strong static magnet and a lower strong static magnet which are identical in parameter are oppositely arranged, the two magnets are spaced by a certain distance to form a gap, and an induction coil is arranged in the middle of the gap, namely the inner sides or the outer sides of circular rings of two annular magnets, so that the central axis of the induction coil is parallel to the central axes of the annular magnets, and effective detection of metal wear particles by the sensor is achieved; and the coupling distance between the sensors is changed by adjusting the outer diameter, the thickness and the gap distance of the annular magnet, so that the effect of enhancing the sensitivity of the sensors is achieved.

Description

technical field [0001] The invention relates to a detection sensor, in particular to a high-sensitivity on-line detection sensor for metal wear particles based on a static magnet, belonging to the technical field of on-line detection of metal wear particles. Background technique [0002] When the mechanical equipment is in operation, the mutual friction and wear phenomenon will occur between the moving amplitudes, thus producing a large number of metal wear particles. These wear particles will further aggravate the wear phenomenon with the operation of the lubricating oil in the mechanical equipment, and these metal wear particles, which are the products of the wear phenomenon, contain a large amount of wear state information of the mechanical equipment. Relevant studies have shown that more than 70% of mechanical failures are caused by abnormal wear and tear. Monitoring the wear state of mechanical equipment can effectively help evaluate the health status of equipment and a...

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Problems solved by technology

But so far, most of the domestic research is still in the laboratory stage, and has not reached the engineering application standards, and the very few sensors that can meet the engineering application standards also have the disadvantages of high cost and complicated manufacturing process.

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