Natural circulating cooling liquid heavy metal reactor

Abstract

The invention discloses a natural circulating cooling liquid heavy metal reactor. The natural circulating cooling liquid heavy metal reactor comprises a main container, a separating device, a main heat exchanger container, a main heat exchanger, a heat connecting pipe, a cold connecting pipe and an electromagnetic driving device, wherein the separating device is used for separating the inner space of the main container into a heat pool and a cold pool which are independently arranged; a reactor core is arranged at the bottom part of the heat pool; the heat connecting pipe and the cold connecting pipe are used for respectively communicating the main container and the main heat exchanger container to form a cooling loop; the electromagnetic driving device is used for enabling liquid heavy metal in the cooling loop to generate pressure gradient under the action of magnetic field force in the reactor starting and power increasing process, thereby driving the liquid heavy metal in the cooling loop to flow. The natural circulating cooling liquid heavy metal reactor has the advantages that the operability of the natural circulating cooling liquid heavy metal reactor is improved; the certain passive safety property is realized, and the safety and economy of the natural circulating cooling liquid heavy metal reactor are effectively improved.

Description

technical field [0001] The invention relates to the field of nuclear power, in particular to a natural circulation cooling liquid heavy metal reactor. Background technique [0002] Liquid heavy metals (mainly referring to lead or lead-bismuth alloys) have the characteristics of good thermal conductivity, high boiling point, and small neutron moderation ability. They are good fast neutron reactor coolants and have been widely used in the design of advanced nuclear energy systems. . In the Russian small modular lead-bismuth cooled reactor SVBR-100, the Russian large lead-cooled fast reactor BREST-300, the European large lead-cooled fast reactor ELFR and the European accelerator-driven subcritical system (ADS) experimental device MYRRHA, liquid heavy metals are used as coolant. [0003] In the existing design schemes of liquid heavy metal reactors, the cooling mode driven by mechanical pumps is generally adopted, such as the Russian small modular lead-bismuth cooled reactor S...

AI Technical Summary

Problems solved by technology

In liquid heavy metal reactor designs using full natural circulation cooling, there is a problem of poor reactor flow control

For example: when the reactor adopts full natural circulation cooling, the core flow rate is determined by the balance between the driving force of natural circulation and the flow resistance of the primary circuit, and cannot be controlled artificially, which greatly increases the process of reactor start-up and shutdown, power increase, etc. The difficulty of flow control

Therefore, the liquid heavy metal reactor cooled by natural circulation has poor controllability and is difficult to be widely used.

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