Liquid metal purification experiment loop system and application method thereof

Abstract

The invention belongs to the technical field of liquid metal purification and discloses a liquid metal purification experiment loop system. The liquid metal purification experiment loop system comprises a melting tank, a storage tank and a loop body; the loop body comprises a main loop unit and a purification branch unit; the main loop unit comprises a first flowmeter, a pump, a heater, an expansion box, a first valve and a first cooler which are sequentially connected to form a loop, the purification branch unit comprises a second cooler, a second flowmeter and a purification experiment device which are serially connected in sequence, a first thermocouple and a first liquidometer are arranged at the top of the melting tank, the bottom of the melting tank is connected with the upper portion of the storage tank through a first connecting pipe, and a second valve is arranged on the first connecting pipe; a second liquidometer, a second thermocouple, a pressure meter and a gas circuit interface are arranged at the top of the storage tank. By the arrangement, purification experiments can be carried out, and true working condition can be simulated by adding impurities to the expansion box; in addition, operation cost is low, experiment efficiency is high, convenience in use is achieved, and the experiments on various filter cores can be performed.

Description

technical field [0001] The invention belongs to the technical field of liquid metal purification, and in particular relates to a liquid metal purification experimental loop system and a use method thereof. Background technique [0002] Because of its low melting point, high boiling point, and good thermal conductivity, liquid metal has become the first choice for the coolant of a new generation of liquid metal reactors. For example, lead is used as coolant in lead-based reactors, and lead-bismuth alloy is used as coolant in accelerator-driven subcritical systems. Extensive research has been carried out worldwide. In liquid metal reactors or loops, an important problem is that the corrosion of structural materials by liquid metal is likely to cause impurities, and impurities may also be introduced during maintenance, loading and unloading, or raw materials, and these impurities are likely to block the flow channels of the heat exchanger. And loop pipes, reduce heat transfer ...

AI Technical Summary

Problems solved by technology

In liquid metal reactors or loops, an important problem is that the corrosion of structural materials by liquid metal is likely to cause impurities, and impurities may also be introduced during maintenance, loading and unloading, or raw materials, and these impurities are likely to block the flow channels of the heat exchanger. and loop piping, reducing heat transfer efficiency, etc.

[0003] In order to ensure the safe operation of the loop and reactor, the coolant must be purified, but the current purification technology is immature, so it is necessary to purify the loop for experiments. Usually, the purification experiment is carried out in the corrosion test loop, but due to the high operating cost of the corrosion loop, the experiment The cost is high, and the source of impurities in the liquid metal is mainly caused by the liquid metal corroding the pipeline for a long time, the experiment time is long and the efficiency is low

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