Magnetic field increasing device for improving magnetic flux leakage detection sensitivity

The utility model provides a magnetic field increasing device for improving magnetic flux leakage detection sensitivity. The magnetic field increasing device comprises a permanent magnet and a magnetyoke. Permanent magnets are symmetrically distributed in the magnet yoke, and coils are wound on the two sides of the magnet yoke. A magnetic field is increased through an electromagnetic field generated by the permanent magnet and the magnet yoke winding coil. Wherein the electromagnetic field intensity can be adjusted, so that the whole magnetic field can be adjusted more flexibly. 本实用新型提供的一种用于提高漏磁检测灵敏度的磁场增大装置，包括永磁铁和磁轭；所述磁轭的内部对称分布有永磁铁，所述磁轭两侧均绕有线圈。通过永磁铁和磁轭缠绕线圈产生的电磁场共同来增大磁场。其中电磁场强度可以调节，使整个磁场可以调整，更加灵活。