Unmanned aerial vehicle countering system of offshore platform

The invention relates to the technical field of unmanned aerial vehicle countering, in particular to an unmanned aerial vehicle countering system of an offshore platform. Salt crystals separated out from the bottom in the liquid storage device are cleaned through the cleaning device; the seawater is heated and evaporated through the heating device; the water vapor in the heating device is condensed through the heat exchange device; salt crystals generated in the heating device are scraped and collected through the scraping device; scraped wet salt crystals are conveyed into the refrigerating device through the conveying device to be stored at low temperature, salt stored at low temperature is conveyed into a fire-fighting lance or a first heat preservation box through the salt conveying device to be used, and the practicability of the device is improved. Comprising a supporting seat, a rotating platform, a supporting frame, a fire-fighting lance, an observation mirror, a first speed reducer and a first motor;