Cutoff device convenient for overhauling air temperature type vaporizer of LNG (Liquefied Natural Gas) gasification station

The utility model discloses a cut-off device convenient for overhauling air temperature type vaporizers of an LNG (Liquefied Natural Gas) gasification station, which comprises two air temperature type vaporizers, liquid inlet branch pipes are respectively connected to liquid inlets of the two air temperature type vaporizers, and gate valves are respectively arranged on the two liquid inlet branch pipes. Liquid outlets of the two air temperature type gasifiers are respectively connected with a liquid outlet branch pipe, the two liquid outlet branch pipes are respectively provided with a valve cut-off device, and the ends, far away from the air temperature type gasifiers, of the two liquid outlet branch pipes are intersected. The other air temperature type vaporizer can operate normally and can supply fuel gas to urban areas normally; and furthermore, when one air temperature type vaporizer goes wrong, the phenomenon that LNG flows back from a liquid outlet of the other air temperature type vaporizer is avoided