Visualized pipeline and pipe fitting blocking mechanism

The utility model provides a visualized pipeline and pipe fitting blocking mechanism which comprises a lower blocking device and a plug. The lower blocking device is used for placing the plug in a flange plug seat in a pipe fitting and comprises a shell, a transmission rod installed in the shell, a lifting device for lifting the transmission rod, a separation device used for separating the plug and a downward blocking connecting box fixedly connected with the shell. The downward blocking connecting box is provided with a monitoring device used for monitoring the downward blocking motion of the plug. The monitoring device comprises a camera arranged in the downward blocking connecting box, a fixing seat for fixed installation of the camera and a monitoring unit connected with the camera. According to the visualized pipeline and pipe fitting blocking mechanism, a pipeline can be blocked from inside to outside, the work procedure that the plug seat is punched is omitted, labor is saved, leakage can be blocked under the visualization condition, the blocking mechanism is safer and more reliable, and the risk that gas leaks from a screw hole is avoided.