Steam pipeline defect detection device

The utility model relates to a steam pipeline defect detection device which structurally comprises an inspection vehicle, a mechanical arm and a pipeline detection mechanism, the mechanical arm is arranged on the inspection vehicle, the pipeline detection mechanism is arranged at the tail end of the mechanical arm, and the pipeline detection mechanism comprises a base. A telescopic element and racks located on the two sides of the telescopic element are arranged on the base, hinge seats are arranged on the racks, arc-shaped arms are hinged to the hinge seats, the arc-shaped arms and the telescopic element are connected with the telescopic element, and the telescopic element drives the arc-shaped arms to swing around the hinge points. And a plurality of infrared thermal imaging cameras are arranged on the arc-shaped arm. According to the utility model, the inspection efficiency is high, all-around inspection can be rapidly carried out on the steam pipeline, the traditional manual inspection is replaced, the in