High-pressure radiography injector and accessory

The utility model relates to a high-pressure radiography injector and an accessory. The high-pressure radiography injector comprises a three-way pipeline, an injector head and an injector head, wherein the three-way pipeline is provided with a first port, a second port and a third port; the bottle inserting needle is inserted into the liquid medicine bottle; the first connecting pipe is connected with the bottle inserting needle and the first port; one end of the second connecting pipe is connected with the second port, and an interface is formed at the other end; the injector comprises a needle cylinder and a rubber plug, and the injector is connected with the third port; the first port and the second port are respectively provided with one-way valves which are arranged in the same direction; the first connecting pipe and the second connecting pipe are respectively provided with a bubble detection device. According to the utility model, the structure is simple, the operation time and steps can be greatly sav