Pipeline magnetic flux leakage detection device

The invention belongs to the technical field of pipeline maintenance, and particularly relates to a pipeline magnetic flux leakage detection device which comprises a magnetic flux leakage detection unit and a control unit. The magnetic flux leakage detection unit comprises a mounting body connected with the control unit, and at least one magnetization assembly and at least one detection assembly which are arranged on the mounting body; the detection assembly comprises a plurality of first elastic sheets and a plurality of magnetic field detection sensors; the first ends of the plurality of first elastic sheets are annularly and uniformly distributed on the mounting body, and the second end of each elastic sheet is provided with at least one magnetic field detection sensor; the first elastic sheet is used for elastically driving the magnetic field detection sensor to fit the inner wall of the pipeline; the pipeline magnetic flux leakage detection device is pushed into a pipeline, the magnetic field detection s