DR detection device suitable for special pipelines of different sizes

The utility model provides a DR detection device suitable for special pipelines of different sizes. The DR detection device comprises a fixing ring; the rotating ring is rotationally connected to the outer surface of the fixed ring; and the limiting box is arranged on the fixing ring, a T-shaped block is slidably connected between the two sides of the interior of the limiting box, and a T-shaped pull rod is connected to one side of the T-shaped block. According to the DR detection device suitable for the special pipelines of different sizes, the rotating ring capable of rotating is arranged on the fixed ring, so that when the special pipelines are detected and the perimeter of the pipelines is large, the position of the DR detector is rotated and adjusted through rotation of the rotating ring; therefore, the detection head can detect the to-be-detected position, the trouble of dismounting the fixing ring, moving the position of the DR detector and then positioning and fixing the DR detector is avoided, and th