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    OXIDE NUCLEAR FUEL WHICH IS A REGULATOR OF CORROSIVE FISSION PRODUCTS, ADDITIVATED WITH AT LEAST ONE OXIDATION-REDUCTION SYSTEM
    1.
    发明申请
    OXIDE NUCLEAR FUEL WHICH IS A REGULATOR OF CORROSIVE FISSION PRODUCTS, ADDITIVATED WITH AT LEAST ONE OXIDATION-REDUCTION SYSTEM 审中-公开
    氧化物核燃料，是一种氧化还原系统加入的腐蚀性产品的调节剂

    公开(公告)号：US20150302942A1

    公开(公告)日：2015-10-22

    申请号：US14441113

    申请日：2013-11-08

    申请人： COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES

    发明人： Chantal Riglet-Martial ,  Méryl Brothier ,  Pierre Matheron ,  Vanessa Pennisi ,  Virginie Basini

    IPC分类号： G21C3/62 ,  G21C21/02 ,  G21C3/06

    CPC分类号： G21C3/623 ,  G21C3/047 ,  G21C3/06 ,  G21C3/17 ,  G21C21/02 ,  Y02E30/38

    摘要： A supplemented nuclear fuel comprises a nuclear fuel of oxide type which generates fission products such as tellurium, cesium and iodine, which generate via chemical interaction species that are potentially corrosive, supplemented with at least one redox system comprising a first and second species comprising a common element having a different degree of oxidation in each of the two species, the system having an oxygen potential curve as a function of the temperature that is within an interval delimited by: an upper limit: the curve of coexistence of the chemical species I2Te (g) and CsI (g) at the same partial pressure imposed by the equilibrium between CsI (l) and CsI (g), approximated between 1000° C. and 2000° C. by a straight line segment whose ends PO2/11 and PO2/12 have the coordinates: PO2/11 (T=1000° C.)≈−370 kJ/molO2 and PO2/12 (T=2000° C.)≈−230 kJ/molO2; and a lower limit: the curve of oxygen potential of the system (Cs2MoO4/Cs+Mo) approximated between 1000° C. and 2000° C. by a straight line segment whose ends PO2/21 and PO2/22 have the coordinates: PO2/21 (T=1000° C.)≈−530 kJ/molO2 and PO2/22 (T=2000° C.)≈−390 kJ/molO2.

    摘要翻译： 补充的核燃料包括氧化物类型的核燃料，其产生裂变产物如碲，铯和碘，其通过具有潜在腐蚀性的化学相互作用物质产生，补充有至少一种氧化还原体系，所述氧化还原体系包含第一和第二物质，其包含共同的 元素在两种物种中的每一种具有不同程度的氧化，该系统具有作为在由以下限定的区间内的温度的函数的氧势曲线：上限：化学物质I2Te（g ）和CsI（g）在CsI（1）和CsI（g）之间的平衡下施加的相同分压下，通过直线段近似于1000℃和2000℃之间的直线段，其末端PO2 / 11和PO2 / 12具有坐标：PO2 / 11（T = 1000℃）≈-370kJ / molO2和PO2 / 12（T = 2000℃）≈-230kJ / molO2; 和下限：系统的氧势（Cs2MoO4 / Cs + Mo）的曲线在1000℃和2000℃之间通过端部PO2 / 21和PO2 / 22的坐标为PO2的直线段近似 / 21（T = 1000℃）≈-530kJ / molO2和PO2 / 22（T = 2000℃）≈-390kJ / molO2。

    REACTOR FUEL ELEMENTS AND RELATED METHODS
    3.
    发明申请
    REACTOR FUEL ELEMENTS AND RELATED METHODS 审中-公开
    反应器燃料元素及相关方法

    公开(公告)号：US20130010915A1

    公开(公告)日：2013-01-10

    申请号：US13178884

    申请日：2011-07-08

    申请人： John E. Garnier ,  George W. Griffith ,  Michael V. Glazoff ,  Sergey Rashkeev

    发明人： John E. Garnier ,  George W. Griffith ,  Michael V. Glazoff ,  Sergey Rashkeev

    IPC分类号： G21C3/00

    CPC分类号： G21C3/17 ,  G21C3/047 ,  Y02E30/40

    摘要： Fuel elements for use in reactors include a cladding tube having a longitudinal axis and fuel disposed therein. At least one channel is formed in at least one of the fuel and the cladding tube and extends in a direction along the longitudinal axis of the cladding tube. The fuel element further includes a plenum having at least one getter material disposed therein. Methods of segregating gases in fuel elements may include forming a temperature differential in the fuel element, enabling at least one gas to travel into at least one channel formed in the fuel element, and retaining a portion of the at least one gas with at least one getter material. Methods of segregating gases in fuel elements also may include enabling at least one gas to travel through at least one channel of a plurality of channels formed in the fuel element.

    摘要翻译： 用于反应器的燃料元件包括具有纵向轴线的包层管和设置在其中的燃料。 至少一个通道形成在燃料和包壳管的至少一个中，并沿着包壳管的纵向轴线的方向延伸。 燃料元件还包括具有设置在其中的至少一个吸气材料的增压室。 在燃料元件中分离气体的方法可以包括在燃料元件中形成温差，使得至少一种气体能够进入形成在燃料元件中的至少一个通道中，并且将至少一种气体的一部分保持在至少一个气体中 吸气材料。 在燃料元件中分离气体的方法还可以包括使至少一种气体能够穿过形成在燃料元件中的多个通道的至少一个通道。

    ALKALI METAL REACTOR POWER SUPPLY
    6.
    发明公开
    ALKALI METAL REACTOR POWER SUPPLY 审中-公开

    公开(公告)号：US20240021334A1

    公开(公告)日：2024-01-18

    申请号：US18256232

    申请日：2021-12-07

    申请人： SHANGHAI NUCLEAR ENGINEERING RESEARCH & DESIGN INSTITUTE CO., LTD.

    发明人： Qichang CHEN ,  Cheng YE ,  Chuntao TANG ,  Xujia WANG ,  Qian LIN ,  Jinkun ZHAO ,  Weizhong ZHANG ,  Chuntian YUAN ,  Yalan QIAN ,  Jinming LI ,  Wei WANG

    IPC分类号： G21D7/04 ,  G21C3/04 ,  H10N10/854

    CPC分类号： G21D7/04 ,  G21C3/047 ,  H10N10/854

    摘要： An alkali metal reactor power supply, including: a reactor vessel, the bottom part of which is provided with a liquid alkali metal; a reactor core, which is arranged in the reactor vessel and includes a plurality of fuel rods and a radial reflection layer arranged at the periphery of the plurality of fuel rods, wherein the surface of each fuel rod is provided with a first liquid absorption core, the bottom part of the reactor core is provided with second liquid absorption cores which are connected to the first liquid absorption cores, and the second liquid absorption cores can be in contact with the liquid alkali metal; and alkali metal thermoelectric converters, which are arranged along the circumferential direction of the radial reflection layer, and divide the inside of the reactor vessel into a high-pressure steam chamber located above the alkali metal thermoelectric converters and a low-pressure steam chamber located below the alkali metal thermoelectric converters. By using the phase-change heat transfer of alkali metal, the circulating power of the liquid alkali metal is provided by using the liquid absorption cores, the structure is simple, the arrangement is flexible, and the power generation efficiency is high.

    FUEL ELEMENT WITH MULTI-SMEAR DENSITY FUEL
    9.
    发明申请
    FUEL ELEMENT WITH MULTI-SMEAR DENSITY FUEL 审中-公开
    燃油元件与多中等密度燃油

    公开(公告)号：US20170062080A1

    公开(公告)日：2017-03-02

    申请号：US15245594

    申请日：2016-08-24

    申请人： TerraPower, LLC

    发明人： Jesse R. Cheatham, III ,  Ryan N. Latta ,  Samuel J. Miller

    IPC分类号： G21C3/04 ,  G21C21/08 ,  G21C1/02

    CPC分类号： G21C3/04 ,  G21C1/026 ,  G21C3/045 ,  G21C3/047 ,  G21C3/16 ,  G21C3/42 ,  G21C7/005 ,  G21C21/08 ,  G21D3/001 ,  Y02E30/34 ,  Y02E30/39

    摘要： A fuel element has a ratio of area of fissionable nuclear fuel in a cross-section of the tubular fuel element perpendicular to the longitudinal axis to total area of the interior volume in the cross-section of the tubular fuel element that varies with position along the longitudinal axis. The ratio can vary with position along the longitudinal axis between a minimum of 0.30 and a maximum of 1.0. Increasing the ratio above and below the peak burn-up location associated with conventional systems reduces the peak burn-up and flattens and shifts the burn-up distribution, which is preferably Gaussian. The longitudinal variation can be implemented in fuel assemblies using fuel bodies, such as pellets, rods or annuli, or fuel in the form of metal sponge and meaningfully increases efficiency of fuel utilization.

    摘要翻译： 燃料元件具有在管状燃料元件的垂直于纵向轴线的横截面中的可裂变核燃料的面积与管状燃料元件的横截面中的内部容积的总面积的比率，其随着沿着 纵轴。 该比率可以随纵轴的位置而变化，最小值为0.30，最大值为1.0。 增加与常规系统相关的峰值燃耗位置之上和之下的比率减少了峰值燃尽和平坦化，并且使燃烧分布发生偏移，燃烧分布优选是高斯分布。 纵向变化可以在使用诸如颗粒，棒或环的燃料体的燃料组件或金属海绵形式的燃料中实现，并且有意义地提高燃料利用效率。