Water-cooling coil pipe at slag opening of gasification furnace

The utility model discloses a gasification furnace slag opening water cooling coil pipe which comprises a spiral pipe and a bent pipe connected with the spiral pipe at the inner side position, slag hanging nails are arranged at the position of the inner wall of the bent pipe, flat steel is arranged at the position of the lower end of the spiral pipe, silica gel sleeves are connected to the joint positions of the boiler water outlet and the boiler water inlet in a sleeving mode, the silica gel sleeves are arranged on the outer wall positions of the boiler water outlet and the boiler water inlet, and the silica gel inner walls are tightly attached to the inner wall positions of the boiler water outlet and the boiler water inlet; the water outlet of the boiler is fixed through the flange plate located below the outer side, the slag opening water-cooling coil pipe is manufactured by bending two water ways, and the heat dissipation effect is better and more uniform. Special slag hanging nails are welded inside the