VORTEX FLAW-SENSING DETECTOR

The utility model relates to a new vortex flaw detection sensor, which is used for lossless detection of dynamic detection and has good electric parameters. The vortex flaw detection sensor is formed by combining an excitation coil and at least two detecting coils, and the number of the detecting coils is an even number, windings of coils all use magnetic materials as magnetic cores, and the centers of the detecting coils are positioned on the circumference line of an inner circle of the excitation coil and are put symmetrically. The utility model improves the coupling between the excitation coil and the detecting coils, increases the density of electric vortexes, has wider bands of frequency and is suitable for the dynamic detection of contact fatigue flaws of vertexes which have high load and high liner speeds and use organic oil as cooling media.