Thin slab continuous casting ladle long nozzle additional argon protection device

The utility model relates to a thin slab continuous casting ladle long nozzle additional argon protection device which comprises a C-shaped argon blowing pipe, an operation connecting pipe and a middle connecting pipeline, an air inlet of the C-shaped argon blowing pipe is communicated with the operation connecting pipe through a quick-change connecting device, the operation connecting pipe is connected with the middle connecting pipeline through a ball valve switch, and the middle connecting pipeline is connected with the C-shaped argon blowing pipe. The middle connecting pipeline is communicated with an argon source main pipeline, and a plurality of first argon blowing holes are distributed in the periphery of the C-shaped argon blowing pipe in a dispersed mode. The long nozzle can effectively reduce the problems of secondary oxidation of molten steel and nitrogen increase caused by air suction of the long nozzle, and has the advantages of convenience and rapidness in operation. 本实用新型涉及一种薄板坯连铸钢包长水口附加氩气保护装置，