High-gradient magnetic field inductance type oil detection device

• Main Authors: XU ZHIWEI, ZHANG HONGPENG, LI WEI, BAI CHENCHAO
• Format: Patent
• Language: Chinese; English
• Published: 23.08.2022
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING

The utility model relates to the technical field of fault detection, in particular to a high-gradient magnetic field inductance type oil liquid detection device, which is characterized in that permalloy sheets with rectangular grooves are respectively arranged on two sides of a planar coil perpendicular to the axial direction of a microfluid channel and are used for gathering a magnetic field of a detection area of a sensing unit; the magnetic field intensity of a detection area of the sensing unit is increased, the signal-to-noise ratio of the metal particles is increased, the detection lower limit of the ferromagnetic metal particles in the oil is improved, and the detection signal-to-noise ratio is improved; the detection lower limit of the non-ferromagnetic metal particles is improved, and the detection signal-to-noise ratio is improved; comprising a chip base body, a liquid inlet, a liquid outlet, a micro-channel and a sensing unit, the liquid inlet is formed in the left portion of the chip base body, th