Transmission-type direct water-cooling anode oversized focus X-ray tube special for irradiation

The utility model discloses a transmission-type direct water-cooling anode oversized focus X-ray tube special for irradiation. The transmission-type direct water-cooling anode oversized focus X-ray tube comprises an anode combined body, a cathode combined body, an insulating ceramic vacuum packaged casing and an anode water-cooling jacket arranged outside the insulating ceramic vacuum packaged casing. The transmission-type direct water-cooling anode oversized focus X-ray tube has the advantages of being high in irradiation conversion efficiency, strong in irradiation strength, large in irradiation angle, good in irradiation evenness and the like and can be matched with high-voltage power sources for replacing radioactive nucleus irradiation sources with irradiation industry, accordingly, people thoroughly get rid of dependence on nucleus irradiation sources, and the latent threading on the environment due to radioactive nucleus pollution is eliminated.