Automatic gas generation type foam generator and foam generation device for separating and removing hydrogen sulfide in wellhead buffer tank

The utility model relates to the field of harmful gas removal in oil exploitation, and discloses an automatic gas generation type foam generator and a foam generation device for removing hydrogen sulfide by isolating a wellhead buffer tank, which comprise a floater, a foam generator shell, a foam overflow plate, a hose joint, a spray head and a liquid level sensor, the floater floats on the liquidlevel of crude oil in the buffer tank; the foam generator shell is basin-shaped and is embedded in the middle of the floater; the foam overflow plate is fixed at the top of the foam generator shell;and the liquid level sensor comprises an upper liquid level sensor and a lower liquid level sensor which are arranged on the hose joint. According to the utility model, the cross-field thought is ingenious, and the foam isolation fire extinguishing technology in the fire-fighting field is creatively introduced into the well site hydrogen sulfide removal technology in the oil exploitation field, sothat the leakage of hydrog