The invention relates to a pipeline
coupling detection device, which comprises an inner layer
pipe, an outer layer
pipe, a plurality of sets of detection assemblies and a data processor, wherein a pipeline and a pipeline
coupling can penetrate through the inner layer
pipe; the outer layer pipe sleeves the outside of the inner layer pipe; an annular mounting cavity is formed between the inner layer pipe and the outer layer pipe; the plurality of sets of detection assemblies are wound on the inner layer pipe at intervals, and are located in the annular mounting cavity; each detection
assembly comprises a
magnet exciting coil and a detection coil; the data processor is connected with the detection coils and is used for comparing induced
electromotive force difference values in different detection coils; a preset difference value is stored in the data processor; and the data processor sends out a
coupling signal only when the induced
electromotive force difference value in any two detection coils is greater than or equal to the preset difference value. According to the pipeline coupling detection device, pipeline coupling misjudgment caused by pipeline shaking can be effectively avoided.