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    ROBUST NUCLEAR PROPULSION FISSION REACTOR WITH TRI-PITCH PATTERNED CORE AND DRUM ABSORBERS
    2.
    发明申请
    ROBUST NUCLEAR PROPULSION FISSION REACTOR WITH TRI-PITCH PATTERNED CORE AND DRUM ABSORBERS 有权

    公开(公告)号：US20210304909A1

    公开(公告)日：2021-09-30

    申请号：US16999244

    申请日：2020-08-21

    申请人： BWXT Advanced Technologies LLC

    发明人： Craig D. GRAMLICH ,  Benjamin D. FISHER ,  William E. RUSSELL, II

    IPC分类号： G21C17/10 ,  G21C3/04 ,  G21C19/30

    摘要： Nuclear propulsion fission reactor structure has an active core region including fuel element structures, a reflector with rotatable neutron absorber structures (such as drum absorbers), and a core former conformal mating the outer surface of the fuel element structures to the reflector. Fuel element structures are arranged abutting nearest neighbor fuel element structures in a tri-pitch design. Cladding bodies defining coolant channels are inserted into and joined to upper and lower core plates to from a continuous structure that is a first portion of the containment structure. The nuclear propulsion fission reactor structure can be incorporated into a nuclear thermal propulsion engine for propulsion applications, such as space propulsion.

    Valve assembly with isolation valve vessel
    3.
    发明授权
    Valve assembly with isolation valve vessel 有权

    公开(公告)号：US11043310B2

    公开(公告)日：2021-06-22

    申请号：US15663376

    申请日：2017-07-28

    申请人： BWXT mPower, Inc.

    发明人： John D. Malloy, III ,  Michael J. Edwards

    IPC分类号： G21C19/04 ,  G21C9/00 ,  G21C13/036 ,  G21C13/10 ,  G21C19/30

    摘要： Apparatuses for reducing or eliminating Type 1 LOCAs in a nuclear reactor vessel. A nuclear reactor including a nuclear reactor core comprising a fissile material, a pressure vessel containing the nuclear reactor core immersed in primary coolant disposed in the pressure vessel, and an isolation valve assembly including, an isolation valve vessel having a single open end with a flange, a spool piece having a first flange secured to a wall of the pressure vessel and a second flange secured to the flange of the isolation valve vessel, a fluid flow line passing through the spool piece to conduct fluid flow into or out of the first flange wherein a portion of the fluid flow line is disposed in the isolation valve vessel, and at least one valve disposed in the isolation valve vessel and operatively connected with the fluid flow line.

    High capacity, low head loss, suction strainer for nuclear reactors
    6.
    发明授权
    High capacity, low head loss, suction strainer for nuclear reactors 失效
    高容量，低头损失，核反应堆吸滤器

    公开(公告)号：US5759399A

    公开(公告)日：1998-06-02

    申请号：US780582

    申请日：1997-01-08

    申请人： Alan J. Bilanin ,  Andrew E. Kaufman

    发明人： Alan J. Bilanin ,  Andrew E. Kaufman

    IPC分类号： B01D29/11 ,  G21C19/30 ,  G21C19/307 ,  B01D29/41 ,  B01D35/02 ,  B01D35/027

    CPC分类号： G21C19/30 ,  B01D29/111 ,  B01D2201/02 ,  B01D2201/44

    摘要： A suction strainer for straining water from the emergency suppression pool of a boiling water reactor includes a plurality of stacked, perforated disks having an internal core with a minimum internal radius r(x) that decreases with increased distance from the intake of the strainer, so that the core has a tapered profile. Internal radius r(x) may vary linearly or exponentially or a combination of both. The stacked, perforated disks each include a first surface that faces in the direction of the intake and a second surface, that faces away from the intake. A circumferential band may connect the first and second surfaces together.

    摘要翻译： 用于使来自沸水反应堆的紧急抑制池的水的过滤器的抽吸过滤器包括多个堆叠的多孔盘，其具有内部芯，其具有最小内部半径r（x），其随着与过滤器的进气口的距离增加而减小，因此 该芯具有锥形轮廓。 内半径r（x）可以线性或指数地变化或两者的组合。 堆叠的穿孔圆盘各自包括面向入口方向的第一表面和面向进口的第二表面。 圆周带可将第一和第二表面连接在一起。

    Method of decontaminating a PWR primary loop
    8.
    发明授权
    Method of decontaminating a PWR primary loop 失效
    对PWR主回路进行净化的方法

    公开(公告)号：US5517539A

    公开(公告)日：1996-05-14

    申请号：US356820

    申请日：1994-12-15

    申请人： Gary J. Corpora ,  Phillip E. Miller ,  Thomas G. Bengel ,  David R. Peffer

    发明人： Gary J. Corpora ,  Phillip E. Miller ,  Thomas G. Bengel ,  David R. Peffer

    IPC分类号： G21C19/30 ,  G21C19/42

    CPC分类号： G21C19/30 ,  G21Y2002/303 ,  G21Y2004/40

    摘要： In a method of decontaminating a primary loop of a pressurized water reactor, including a steam generator, reactor coolant pump and hot and cold legs in the loop, the primary loop is isolated from a nuclear reactor vessel by closing hot leg and cold leg loop stop valves. Decontamination process water is circulated from one side of the steam generator channel head to the other side of the channel head via a bypass pipe extending between the cold leg and the hot leg without bypassing the water through steam generator tubes extending between the sides of the channel head. The level of the decontamination water in the steam generator is maintained at two to three feet in the tubes.

    摘要翻译： 在对包括蒸汽发生器，反应堆冷却剂泵以及回路中的冷热腿的压水反应堆的主回路进行净化的方法中，通过闭合热腿和冷腿循环停止将主回路与核反应堆隔离 阀门 净化处理水通过在冷腿和热腿之间延伸的旁通管而从蒸汽发生器通道头的一侧循环到通道头的另一侧，而不会通过在通道的两侧之间延伸的蒸汽发生器管绕过水 头。 蒸汽发生器中去污水的水平保持在管中2-3英尺处。

    Reactor water cleanup system
    9.
    发明授权
    Reactor water cleanup system 失效
    反应堆净水系统

    公开(公告)号：US5375151A

    公开(公告)日：1994-12-20

    申请号：US803943

    申请日：1991-12-09

    申请人： Douglas M. Gluntz ,  William E. Taft

    发明人： Douglas M. Gluntz ,  William E. Taft

    IPC分类号： G21C15/18 ,  G21C19/307 ,  G21C19/30

    CPC分类号： G21C19/307

    摘要： A reactor water cleanup system includes a reactor pressure vessel containing a reactor core submerged in reactor water. First and second parallel cleanup trains are provided for extracting portions of the reactor water from the pressure vessel, cleaning the extracted water, and returning the cleaned water to the pressure vessel. Each of the cleanup trains includes a heat exchanger for cooling the reactor water, and a cleaner for cleaning the cooled reactor water. A return line is disposed between the cleaner and the pressure vessel for channeling the cleaned water thereto in a first mode of operation. A portion of the cooled water is bypassed around the cleaner during a second mode of operation and returned through the pressure vessel for shutdown cooling.

    摘要翻译： 反应堆水净化系统包括反应堆压力容器，其包含浸没在反应器水中的反应堆芯。 提供第一和第二平行清理列车，用于从压力容器中提取反应器水的部分，清洁抽出的水，并将净化的水返回压力容器。 每个清理列车包括用于冷却反应器水的热交换器和用于清洁冷却的反应器水的清洁器。 在清洁器和压力容器之间布置有返回管线，用于在第一操作模式下将净化的水引导到其上。 冷却水的一部分在第二操作模式期间绕过清洁器旁路，并通过压力容器返回关闭冷却。

    Clogging indicator for controlling sodium quality
    10.
    发明授权
    Clogging indicator for controlling sodium quality 失效
    控制钠质量的指示剂

    公开(公告)号：US5193382A

    公开(公告)日：1993-03-16

    申请号：US735784

    申请日：1991-07-25

    申请人： Christian Latge ,  Guy Lemercier ,  Bernard Puech ,  Georges Jullien

    发明人： Christian Latge ,  Guy Lemercier ,  Bernard Puech ,  Georges Jullien

    IPC分类号： G01N25/14 ,  G01N33/20 ,  G21C17/02 ,  G21C17/025 ,  G21C19/30

    CPC分类号： G01N33/206 ,  G01N25/14 ,  G21C17/025

    摘要： The clogging indicator makes it possible to continuously measure the purity of sodium circulating in the circuits of a fast neutron reactor without requiring the dismantling or completely changing the indicator should the measuring section becomes clogged. The clogging indicator essentially includes a bypass pipe comprising one coaxial external section (8) and one coaxial internal section (9). A measuring head (10) is mounted and able to move between these two sections and is mainly composed of at least one thermoelement (24) and one mobile grid (22) causing the measuring section to vary and thus the measured flow so as to favor uncloggings and the dissolving of any impurities crystallized during the measurements. This unit is completed by the other main elements of the clogging indicator in an elongated longitudinal body and surrounded by a thermic exchanger (11) for cooling the sodium.

    摘要翻译： 堵塞指示器可以连续地测量在快中子反应器的回路中循环的钠的纯度，而不需要拆卸或如果测量部分堵塞则完全改变指示器。 堵塞指示器基本上包括包括一个同轴外部部分（8）和一个同轴内部部分（9）的旁通管。 测量头（10）安装并且能够在这两个部分之间移动，并且主要由至少一个热电偶（24）和一个移动网格（22）组成，使得测量部分变化，并且因此测量流量有利于 在测量期间结晶的任何杂质的溶解和溶解。 该单元由延长的纵向主体中的堵塞指示器的其它主要元件完成，并被用于冷却钠的热交换器（11）包围。