SUCTION TYPE SAMPLING SYSTEM FOR MOLTEN METAL MEDIUM IN REACTOR VESSEL

A suction type sampling system for a molten metal medium in a reactor vessel, comprising a suction apparatus (2), a sampling pipeline (3) and a complete sampling box (4). The sampling pipeline (3) is provided with a first port (31) and a second port (32) opposite to and communicated with each other; the first port (31) is connected to the suction apparatus (2); the second port (32) is connected to the reactor vessel; a sampling valve is provided on the sampling pipeline (3); and the sampling valve is located between the first port (31) and the second port (32) and is configured to be capable of communicating or disconnecting the first port (31) and the second port (32). The complete sampling box (4) is provided with a sealing cavity, and the sampling valve is sealed in the sealing cavity. The suction apparatus (2) is used for suctioning away the molten metal medium in the reactor vessel by means of the sampling pipeline (3), or enabling the residual molten metal medium in the sampling pipeline (3) to flow bac