Heating mechanism of double-layer constant-temperature gas storage tank

The utility model relates to the technical field of gas storage tanks, in particular to a heating mechanism of a double-layer constant-temperature gas storage tank, which can quickly and fully heat gas in the double-layer gas storage tank and keep constant temperature, and is high in practicability. Comprising a gas storage tank which is provided with a plurality of supporting legs, a gas inlet pipe, a gas outlet pipe and a drainage pipe. The device further comprises a plurality of light rails, a heating shell, a heater, a lifting mechanism, a winding mechanism and a temperature measuring assembly, the light rails are vertically installed in the gas storage tank, the heating shell is in sliding connection with the light rails, the lifting mechanism drives the heating shell to ascend and descend along the light rails, the heater is installed in the heating shell, the heater heats the heating shell, and the temperature measuring assembly is arranged on the heating shell. The heating shell is used for heating ga