利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

15 条记录 (耗时 0.011 秒)

    PASSIVE REACTIVITY CONTROL IN A NUCLEAR FISSION REACTOR
    2.
    发明申请
    PASSIVE REACTIVITY CONTROL IN A NUCLEAR FISSION REACTOR 审中-公开

    公开(公告)号：US20180182498A1

    公开(公告)日：2018-06-28

    申请号：US15583091

    申请日：2017-05-01

    申请人： TerraPower, LLC

    发明人： Jesse R. Cheatham, III ,  John R. Gilleland ,  Jon D. McWhirter

    IPC分类号： G21C1/02 ,  G21C7/30 ,  G21C3/44

    CPC分类号： G21C7/30 ,  G21C1/026 ,  G21C3/18 ,  G21C3/24 ,  G21C7/02 ,  Y02E30/39

    摘要： A nuclear reactor includes a passive reactivity control nuclear fuel device located in a nuclear reactor core. The passive reactivity control nuclear fuel device includes a multiple-walled fuel chamber having an outer wall chamber and an inner wall chamber contained within the outer wall chamber. The inner wall chamber is positioned within the outer wall chamber to hold nuclear fuel in a molten fuel state within a high neutron importance region. The inner wall chamber allows at least a portion of the nuclear fuel to move in a molten fuel state to a lower neutron importance region while the molten nuclear fuel remains within the inner wall chamber as the temperature of the nuclear fuel satisfies a negative reactivity feedback expansion temperature condition. A duct contains the multiple-walled fuel chamber and flows a heat conducting fluid through the duct and in thermal communication with the outer wall chamber.

    MOLTEN SALT COMPOSITIONS WITH ENHANCED HEAT TRANSFER AND REDUCED CORROSION PROPERTIES
    6.
    发明申请
    MOLTEN SALT COMPOSITIONS WITH ENHANCED HEAT TRANSFER AND REDUCED CORROSION PROPERTIES 有权

    公开(公告)号：US20210222042A1

    公开(公告)日：2021-07-22

    申请号：US16039770

    申请日：2018-07-19

    申请人： UT-Battelle, LLC

    发明人： Sheng Dai ,  Carter W. Abney ,  Richard T. Mayes ,  Dmitriy Dolzhnikov ,  Huimin Luo

    IPC分类号： C09K5/12 ,  G21C5/12 ,  G21C15/28 ,  G21C1/22 ,  G21C3/44

    摘要： A heat transfer (exchange) composition comprising a halide salt matrix having dispersed therein nanoparticles comprising elemental carbon in the absence of water and surfactants, wherein said halide is fluoride or chloride, wherein the halide salt may be an alkali halide salt (e.g., lithium fluoride, sodium fluoride, potassium fluoride, rubidium fluoride, sodium chloride, potassium chloride, rubidium chloride, and eutectic mixtures thereof) or an alkaline earth halide salt (e.g., fluoride or chloride salt of beryllium, magnesium, calcium, strontium, or barium), and wherein the nanoparticles comprising elemental carbon may be solid or hollow, and wherein the composition may further include nanoparticles comprising a fissile material (e.g., U, Th, or Pu) dispersed within the composition. Molten salt reactors (MSRs) containing these heat transfer compositions in coolant loops in thermal exchange with a reactor core, as well operation of such MSRs, are also described.

    Pebble-bed reactor
    9.
    发明授权
    Pebble-bed reactor 失效
    卵石床反应堆

    公开(公告)号：US3960656A

    公开(公告)日：1976-06-01

    申请号：US549779

    申请日：1975-02-13

    申请人： Gunter Lohnert ,  Ulrich Muller-Frank ,  Jurgen Heil

    发明人： Gunter Lohnert ,  Ulrich Muller-Frank ,  Jurgen Heil

    IPC分类号： G21C1/07 ,  G21C19/20 ,  G21C3/44

    CPC分类号： G21C1/07 ,  G21C19/20 ,  Y02E30/36

    摘要： A pebble-bed nuclear reactor of large power rating comprises a container having a funnel-shaped bottom forming a pebble run-out having a centrally positioned outlet. A bed of downwardly-flowing substantially spherical nuclear fuel pebbles is positioned in the container and forms a reactive nuclear core maintained by feeding unused pebbles to the bed's top surface while used or burned-out pebbles run out and discharge through the outlet. A substantially conical body with its apex pointing upwardly and its periphery spaced from the periphery of the container spreads the bottom of the bed outwardly to provide an annular flow down the funnel-shaped bottom forming the run-out, to the discharge outlet. This provides a largely constant downward velocity of the spheres throughout the diameter of the bed throughout a substantial portion of the down travel, so that all spheres reach about the same burned-out condition when they leave the core, after a single pass through the core area.

    摘要翻译： 具有大功率额定值的卵石床核反应堆包括具有漏斗形底部的容器，形成具有居中定位的出口的卵石流出物。 向下流动的基本上球形的核燃料鹅卵石床位于容器中并形成通过将未使用的鹅卵石喂入床顶表面而保持的反应性核芯，而使用或烧尽的鹅卵石通过出口排出并排出。 一个基本上圆锥形的主体，其顶点指向上方，并且与容器的周边隔开的周边将床的底部向外扩展，以形成一个形成漏气的漏斗形底部的环形流向排出口。 这在整个床的整个直径的整个直径范围内提供了大体上恒定的球体向下的速度，使得当它们离开核心时，所有的球体在单个通过芯部之后达到相同的烧尽状态 区。

    Colloidal-gas core reactor
    10.
    发明授权
    Colloidal-gas core reactor 失效
    胶体核反应堆

    公开(公告)号：US3711370A

    公开(公告)日：1973-01-16

    申请号：US3711370D

    申请日：1970-01-13

    申请人： US AIR FORCE

    发明人： VON OHAIN H ,  KELLER M

    IPC分类号： G21C1/22 ,  G21D5/02 ,  G21C3/44

    CPC分类号： G21D5/02 ,  G21C1/22 ,  G21Y2002/103 ,  G21Y2004/30 ,  Y02E30/40

    摘要： A colloidal-gas core nuclear reactor having a high tensile strength outer semispheroidal pressure shell enclosing a moderator body member which surrounds a central cavity with an expanding exit nozzle at one end thereof. The cavity wall has a gradually increasing radius from the nozzle end in a direction upstream within the cavity. A hydrogen gas manifold is positioned at the maximum radius of the cavity and supplies gas to the cavity through a plurality of annularly positioned swirl vanes. Additional hydrogen gas is supplied to the cavity with a tangential component through nozzles positioned in a plurality of positions of the cavity wall adjacent the exit nozzle to prevent the flow of nuclear particles along the forward wall boundary layer to the exit nozzle.

    摘要翻译： 一种胶体 - 气体核心核反应堆，其具有高拉伸强度的外部半球形外壳，其包围一个主体构件，该主体构件在其一端具有扩张的出口喷嘴围绕中心空腔。 空腔壁在空腔内沿着上游的方向从喷嘴端逐渐增加半径。 氢气歧管位于空腔的最大半径处，并通过多个环形定位的涡流叶片将气体供应到空腔。 另外的氢气通过位于邻近出口喷嘴的空腔壁的多个位置的喷嘴的切向部件供应到空腔，以防止核颗粒沿着前壁边界层流到出口喷嘴。