High-temperature pressure pipeline on-line monitoring device

The invention relates to the technical field of pipeline on-line monitoring, and discloses a high-temperature pressure pipeline on-line monitoring device which comprises a pipe body and a plurality of clamping plate frames installed on the pipe body, monitors are installed on the clamping plate frames, an arc-shaped moving panel is arranged between every two adjacent clamping plate frames, an arc-shaped tooth row is installed on one side of each arc-shaped moving panel, and the arc-shaped tooth row is arranged on the other side of each arc-shaped moving panel. A protective outer frame is fixedly mounted on one side of the arc-shaped tooth row; according to the online monitoring device for the high-temperature pressure pipeline, the surface of a pipe body is cleaned through a rotating rod frame and a flexible cleaning roller on the rotating rod frame, an acting roller exerts an effect on a stress roller, and the stress roller exerts an effect on the surface of the pipe body through the rotating rod frame and t