Blowout pipeline detection device

The utility model relates to a detection device for an open flow pipeline, which comprises at least one probe assembly pup joint for detecting corrosion, abrasion and blockage of a pipeline and at least two rolling assembly pup joints for driving the probe assembly pup joint to move on the pipeline, and a detection probe is arranged on the probe assembly pup joint. Moving rollers are arranged on the rolling assembly pup joints, and the probe assembly pup joint and the rolling assembly pup joints are sequentially hinged to form an annular structure capable of being arranged on a pipeline in a sleeving manner; when the probe assembly short section and the rolling assembly short sections are arranged on the pipeline in a sleeving mode, the detection probe and the moving rolling wheels are arranged in the circumferential direction of the pipeline, a signal collecting port of the detection probe is attached to the outer wall of the pipeline, and the moving rolling wheels abut against the outer wall of the pipeline