Industrial pipeline welding seam detection device

The invention discloses an industrial pipeline welding seam detection device which structurally comprises a motor, a detection mechanism, a pulley and an observation port, the motor is arranged at the left end of the outer side of the detection mechanism, the motor and the pulley rotate synchronously, and through automatic telescopic adjustment of a telescopic hose, a nozzle is tightly attached to a welding seam of an industrial pipeline. Mineral oil is extruded into a welding seam of the industrial pipeline to be adsorbed, welding slag left in the welding seam of the industrial pipeline falls into the tray to be collected, the permeability of the mineral oil in the oil storage tank in the welding seam of the industrial pipeline is guaranteed, and the magnesium powder discharging area is increased through the three spraying pipes. And elastic force is applied to the shielding plate through the spring, so that the shielding plate abuts against the outer side surface of the industrial pipeline, the welding seam