A novel nature cycle cooling lead-based fast reactor

Abstract

The invention discloses a novel nature cycle cooling lead-based fast reactor. The novel nature cycle cooling lead-based fast reactor at least includes: a core, a main container, a core shroud, a heatpool, a cool pool, a main heat exchanger and a reactor top cover. The main container is a circular column metal container, the two ends of the main container are sealed; the core shroud is arranged inthe main container, the inner space of the main container is divided into the heat pool and cool pool; at least one part of the core shroud has a circular column metal plate with a taper curved surface, the core is arranged at the bottom of the heat pool of the main container, the height difference is existed between the core and the main heat exchanger, the main heat exchanger is connected withthe heat pool and cool pool, and the nature circulation canal of the cooling agent is formed by the main heat exchanger, cool pool and heat pool. The nature cycle capability of the first loop coolingagent can be enhanced, and the security and economy of the nature cycle cooling lead-based fast reactor are effectively improved.

Description

technical field [0001] The invention relates to the field of nuclear reactors, in particular to nuclear reactors cooled by liquid lead or lead-bismuth. Background technique [0002] Liquid lead or lead-bismuth alloy has the characteristics of good thermal conductivity, high boiling point, and small neutron moderator ability, and is a good coolant for fast neutron reactors. 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 lead or Lead-bismuth alloy is used as coolant. Thanks to the excellent properties of liquid lead and lead-bismuth alloy coolant, lead-based fast reactors are considered to be the fourth-generation reactor type that is expected to be the first to realize industrial applications. [0003] In the existing design schemes of lead-based fast reactor...

AI Technical Summary

Problems solved by technology

[0005] However, in the existing natural circulation cooling lead-based fast reactor technical schemes, there are generally disadvantages such as weak natural circulation ability and low power density; However, due to the increase of the bubble generating device, the complexity of the reactor system is increased, the system reliability is low, and the engineering feasibility is not high

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