System for sampling molten metal medium in reactor vessel

The invention relates to a molten metal medium sampling system in a reactor vessel, which comprises a sampling pipeline, a reactor main pump, a sampling branch, a sampling valve, a sampling vessel and a sampling box, the sampling pipeline is provided with an inlet end and an outlet end, the sampling pipeline is provided with a sampling port, and the reactor main pump is arranged in the reactor vessel and is provided with a main pump outlet communicated with the inlet end; the reactor main pump is used for driving a molten metal medium to flow into the sampling pipeline through the inlet end, one end of the sampling branch is communicated with the sampling port, the sampling valve is arranged on the sampling branch, the sampling container is detachably connected to the other end of the sampling branch, and the sampling branch and the sampling container are both arranged in the sampling box. According to the sampling system for the molten metal medium in the reactor vessel, sampling is completed by utilizing th