Gas drainer

The invention belongs to the technical field of gas drainers, and particularly relates to a gas drainer. The gas drainer comprises a drainer high-pressure chamber, an anti-leakage head and a horn mouth drainage assembly. One end of the anti-leakage head communicates with the drainer high-pressure chamber and used for collecting gas condensate water, and a condensate water drainage outlet is arranged at the other end of the anti-leakage head; the horn mouth drainage assembly comprises a horn mouth drainage pipe, a movable supporting pipe and a fixed branch pipe; the horn mouth drainage pipe comprises a horn mouth and a drain pipe which are fixedly connected, the two ends of the drain pipe are opened, the small-diameter end of the horn mouth communicates with one end of the drain pipe, and the large-diameter end of the horn mouth is aligned to the anti-leakage head; one end of the movable supporting pipe is fixedly connected to the drain pipe; and one end of the fixed branch pipe is fixedly connected to the dra