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Molten fuel nuclear reactor with neutron reflecting coolant

專(zhuān)利號(hào)
US10867710B2
公開(kāi)日期
2020-12-15
申請(qǐng)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(lèi)
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(shuō)明書(shū)

Such absorbent-lined tubes 2500 may be provided in all reflector tubes or in just some reflector tubes of a reactor. For example, in an embodiment graphite-lined tubes 2500 may be provided only in tubes that are adjacent the reactor core, such as the five tubes 2108 in FIG. 21 that abut the core barrel in each reflector channel 2104. In yet another embodiment, only the largest tubes are lined tubes 2500.

Depending on the embodiment, the layer 2502 may be installed in the reactor so that it is core-facing or outside-facing. In another embodiment, the lined tubes 2500 may be rotatable about an axis, e.g., the vertical axis, to provide additional adjustment to the reactivity. By rotating the tubes 2500 in place around their center, vertical axis, given sides of the tubes 2500 may be moved between a core-facing position and an outside-facing position the reactivity can be tuned during operation. For example, the absorbant-lined tubes 2500 may be placed in one position during startup and then rotated as the operational conditions are met to maintain the reactor in criticality, modify thermal and/or power generation of the reactor and/or adjust the local neutron environment for components to extend its lifetime in the core. The rotation may also be used to shut down the reactor by rotating the drums so that the absorber is in the core-facing position. In this embodiment, one or more drive mechanisms are provided to rotate the drums.

權(quán)利要求

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