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Molten fuel nuclear reactor with neutron reflecting coolant

專利號(hào)
US10867710B2
公開日期
2020-12-15
申請人
TerraPower, LLC（US WA Bellevue）
發(fā)明人
Anselmo T. Cisneros, Jr.; Charles Gregory Freeman; Kevin Kramer; Jeffery F. Latkowski
IPC分類
G21C7/28; G21C3/54; G21C1/02; G21C7/22; G21C1/22; G21C15/28; G21C1/32; G21C7/27; G21C11/06; G21C15/02
技術(shù)領(lǐng)域
neutron,reflector,reactor,fuel,neutrons,in,core,flowing,material,molten
地域： WA WA Bellevue

摘要

Configurations of molten fuel salt reactors are described that utilize neutron-reflecting coolants or a combination of primary salt coolants and secondary neutron-reflecting coolants. Further configurations are described that circulate liquid neutron-reflecting material around a reactor core to control the neutronics of the reactor. Furthermore, configurations which use the circulating neutron-reflecting material to actively cool the containment vessel are also described. A further configuration is described that utilizes a core barrel between a reactor core volume of molten fuel salt and a reflector volume, in which the reflector volume contains a plurality of individual reflector elements separated by an interstitial space filled with molten fuel salt.

說明書

Reflector assembly 900 includes selectively inserted neutron absorbing members 906 and selectively inserted volumetric displacement members 910. Neutron absorbing members 906 and volumetric displacement members 910 may be of any geometric shape compatible with the shape of channels 908. Neutron absorbing members 906 and volumetric displacement members 910 displace a volume of flowing neutron reflector material 904 in the channel 908 into which they are inserted, thus lowering the neutron reflectivity of that channel. Selectively inserting neutron absorbing members 906 and volumetric displacement members 910 adjusts the neutron reflectivity in the nuclear reactor core by altering the composition of the material in the neutron reflection assembly. Several scenarios are possible for fast neutrons travelling into volumetric displacement members 910, such as example fast neutron 910. Fast neutron 912 may pass through the member 910 (not shown in FIG. 9), fast neutron 912 may be reflected by the remaining flowing neutron reflector material 904 in the channel, or fast neutron 912 may be reflected by another surface (not shown). Example fast neutron 912 is less likely to reflect back into fuel region 902 when a volumetric displacement member 910 is inserted than when the channel is full of the flowing neutron reflector material 904.

權(quán)利要求

1
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