Pipe welding device with liquid and pressure

The utility model provides a pipe welding device with liquid and pressure, and relates to the technical field of engineering construction. The liquid and pressure pipe welding device comprises a welding pipe, a through hole is formed in the center of the welding pipe, a drainage pipe is arranged in the through hole, an inflation sleeve used for stopping water is arranged between the drainage pipe and the through hole, the inflation sleeve is fixedly connected with the drainage pipe, and the drainage pipe is detachably connected with the inner wall of the welding pipe; most of water in the pipe can be isolated during welding, so that the pressure in the pipe is adjusted, and the water in the pipe is prevented from influencing the welding efficiency. 本实用新型提出了一种带液带压的管材焊接装置，涉及工程施工技术领域。该带液带压的管材焊接装置包括焊接管，所述焊接管的中心设置有通孔，所述通孔内设置有引流管，所述引流管与所述通孔间设置有用于止水的充气套，所述充气套与所述引流管固定连接，所述引流管与所述焊接管的内壁可拆卸连接；其能够在焊接时隔绝管材中的大部分水分，以调节管材中的压强，进而避免管材中的水分影响焊接的效率。