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473 条记录 (耗时 0.016 秒)

    FUEL ASSEMBLY ARRANGEMENT FOR RETAINING FUEL ROD END PLUG TO BOTTOM NOZZLE
    92.
    发明申请
    FUEL ASSEMBLY ARRANGEMENT FOR RETAINING FUEL ROD END PLUG TO BOTTOM NOZZLE 审中-公开

    公开(公告)号：US20200312469A1

    公开(公告)日：2020-10-01

    申请号：US16900312

    申请日：2020-06-12

    申请人： Westinghouse Electric Company LLC

    发明人： Jeffrey M. MCCARTY ,  Nathan J. PAYNE ,  Kirkland D. BROACH

    IPC分类号： G21C3/33 ,  G21C3/32 ,  G21C3/10

    摘要： An improved retention system for retaining fuel rods in a fuel assembly is disclosed. The retention system includes a plurality of first engagement surfaces on the bottom nozzle of a fuel assembly. There is at least one engagement surface for each fuel rod. A second engagement surface is formed on the bottom end plug of each fuel rod. The first and second engagement surfaces are configured for engagement with each other for axially and laterally retaining each fuel rod within the fuel assembly. Debris deflectors may also be provided to deflect debris from coolant channels surrounding the fuel rods.

    Fuel Assembly
    95.
    发明申请
    Fuel Assembly 审中-公开

    公开(公告)号：US20170337993A1

    公开(公告)日：2017-11-23

    申请号：US15536581

    申请日：2015-12-04

    申请人： Hitachi, Ltd.

    发明人： Kiyoshi FUJIMOTO ,  Shirou TAKAHASHI

    IPC分类号： G21C3/33 ,  G21C5/06 ,  G21C7/08

    摘要： It is possible to achieve self-support of the fuel assembly without an upper grid plate when the fuel assembly is mounted or replaced, and it is also possible to prevent the fuel assembly from floating during a reactor operation. According to the present invention, the lower portion of the lower tie plate 7 as a part of the fuel assembly 3, which is inserted into the fuel support 9, extends, and a stable member 21 is provided around the extension portion 20, and thereby it is possible to achieve the self-support of the fuel assembly without the upper grid plate. In addition, since an increase in a weight due to extension of the lower portion of the lower tie plate 7 can prevent the floating during the reactor operation, a floating preventing mechanism using the upper grid plate is not necessary. Hence, it is possible to achieve the self-support of the fuel assembly without an upper grid plate when the fuel assembly is mounted or replaced, and it is also possible to prevent the fuel assembly from floating during the reactor operation.

    COMBINATION OF TOP NOZZLE AND GUIDE THIMBLE FOR NUCLEAR FUEL ASSEMBLY
    97.
    发明申请
    COMBINATION OF TOP NOZZLE AND GUIDE THIMBLE FOR NUCLEAR FUEL ASSEMBLY 有权
    用于核燃料组件的顶部喷嘴和导向管的组合

    公开(公告)号：US20170032852A1

    公开(公告)日：2017-02-02

    申请号：US15293431

    申请日：2016-10-14

    申请人： KEPCO NUCLEAR FUEL CO., LTD.

    发明人： Nam-Gyu PARK ,  Kyu-Tae Kim ,  Jung-Min Suh ,  Shin-Ho Lee ,  Kyong-Bo Eom ,  Joon-Kyoo Park ,  Jin-Sun Kim ,  Gyu-Cheol Shin ,  Seong-Ki Lee ,  Il-Kyu Kim ,  Ki-Sung Choi ,  Kyeong-Lak Jeon

    IPC分类号： G21C3/33

    CPC分类号： G21C3/3315 ,  G21C3/33 ,  G21C3/334 ,  G21Y2002/402 ,  Y02E30/40

    摘要： A combination of a top nozzle and a guide thimble of a nuclear fuel assembly and, more particularly, a structure for joining an inner-extension tube, the top nozzle and the guide thimble. When an inner-extension tube head, which is provided as a means for facilitating removal of the top nozzle of the nuclear fuel assembly from the guide thimble, is removed from an inner-extension tube body to separate the top nozzle from the nuclear fuel assembly, the inner-extension tube body is prevented from undesirably rotating, so that the guide thimble and the inner-extension tube body can maintain the joined state.

    摘要翻译： 核燃料组件的顶部喷嘴和导向套管的组合，更具体地，用于连接内部延伸管，顶部喷嘴和导向套管的结构。 当作为用于便于从引导套管移除核燃料组件的顶部喷嘴的装置提供的内部延伸管头从内部延伸管体移除以将顶部喷嘴与核燃料组件分开时 内部延伸管体被防止不期望地旋转，使得导向套管和内延伸管体可以保持接合状态。

    Fuel bundle for a liquid metal cooled nuclear reactor
    99.
    发明授权
    Fuel bundle for a liquid metal cooled nuclear reactor 有权
    用于液态金属冷却核反应堆的燃料束

    公开(公告)号：US09455052B2

    公开(公告)日：2016-09-27

    申请号：US13471806

    申请日：2012-05-15

    申请人： Eric P. Loewen ,  Brian S. Triplett ,  Brett J. Dooies ,  Scott L. Pfeffer

    发明人： Eric P. Loewen ,  Brian S. Triplett ,  Brett J. Dooies ,  Scott L. Pfeffer

    IPC分类号： G21C3/32 ,  G21C1/03 ,  G21C3/322 ,  G21C3/33

    CPC分类号： G21C1/03 ,  G21C3/322 ,  G21C3/3305 ,  Y02E30/34 ,  Y02E30/35 ,  Y02E30/38

    摘要： In one embodiment, a fuel bundle for a liquid metal cooled reactor includes a channel, a nose assembly secured to a lower end of the channel, a plurality of fuel rods disposed within the channel, and an internal mixer disposed within the channel above the plurality of fuel rods. The internal mixer includes peripheral flow control members and interior flow control members. The peripheral flow control members are located near walls of the channel, and the interior flow control members are located towards a longitudinal center of the housing. At least one of the peripheral flow control members is configured to direct liquid metal flowing through the channel towards an interior of the channel, and at least one of the interior flow control members is configured to direct liquid metal flowing through the channel away from the interior of the channel.

    摘要翻译： 在一个实施例中，用于液体金属冷却反应器的燃料束包括通道，固定到通道的下端的鼻部组件，设置在通道内的多个燃料棒，以及设置在多个通道内的通道内的内部混合器 的燃料棒。 内部混合器包括外围流量控制构件和内部流动控制构件。 外围流量控制构件位于通道的壁附近，并且内部流动控制构件朝向壳体的纵向中心定位。 外围流动控制构件中的至少一个构造成将流过通道的液态金属引向通道的内部，并且内部流量控制构件中的至少一个构造成将流过通道的液态金属引导离开内部 的频道。