Liquefied gas insulating water seal

The utility model discloses a liquefied gas insulating water seal. The liquefied gas insulating water seal comprises a tank body; a liquefied gas tank is arranged at one side of the tank body; a water feeding pipe is communicated to the tank body; water is stored in the tank body through the water feeding pipe; the level line of the water reaches the inner middle part of the tank body; a gas feeding pipe and a gas discharging pipe are respectively arranged at two ends of the top surface of the tank body; the gas feeding pipe is communicated with the liquefied gas tank and extends into the tank body until extending into the water; the gas discharging pipe is positioned above the water level of water in the tank body; the gas discharging pipe outwards extends to be communicated with a gas pipe on a fire gun; a draining opening is formed in the bottom surface of the tank body; a valve is mounted on the draining opening. The liquefied gas insulating water seal is improved in structure, simple and practical; the phenomenon of fire turn generated during using the fire gun can be insulated with water, so that the use is safe.