MAGNETIC FLUX LEAKAGE PIG AND SENSOR MODULE INSTALLED AT THE MAGNETIC FLUX LEAKAGE

摘要

A magnetic leakage pig and a sensor module installed at the magnetic leakage pig are provided to secure reliability of the data by the three directional fixation and uniform arrangement of sensors by using a support. A magnetic leakage pig measuring defect of a pipe by the movement of a magnetic leakage pig body(500) in the pipe includes a pair of magnetic field induction units(100) separated by a predetermined interval at one side and the other side of the magnetic leakage pig body to induce a magnetic field to the pipe; a sensor module(200) installed between the magnetic field induction units to measure a leakage magnetic field when the magnetic field is leaked from the pipe; a support(300) installed at the exterior of the magnetic leakage pig body; and an elastic rotating unit(400) rotatably mounted between the support and the sensor module so that the sensor module is easily contacted to the inner wall of the pipe at a bent area of the pipe.