Online double-channel boron-containing concentrated solution metering method and device

The invention belongs to the technical field of radioactive waste management, and particularly relates to an online double-channel boron-containing concentrated solution metering method and device. Comprising a concentrated solution metering tank, a cleaning water inlet valve and a concentrated solution inlet valve, wherein the cleaning water inlet valve is connected with a cleaner in an upper sealing head through a cleaning water pipe; the concentrated solution inlet valve is connected with the upper sealing head through a feeding pipe and is opened on the upper sealing head; the concentrated solution outlet metering valve is connected with the lower sealing head through a discharging pipe and is opened on the lower sealing head; a liquid level switch is arranged on the upper sealing head of the concentrated solution metering tank; a stirrer motor is arranged on an upper sealing head of the concentrated solution metering tank and extends into the middle lower part of the intermediate tank through a long shaf