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122 条记录 (耗时 0.014 秒)

    Reactor core for a light water cooled reactor, fuel assembly and control rod
    31.
    发明授权
    Reactor core for a light water cooled reactor, fuel assembly and control rod 失效
    反应堆核心为轻水冷却反应堆，燃料组件和控制棒

    公开(公告)号：US5940461A

    公开(公告)日：1999-08-17

    申请号：US70246

    申请日：1998-05-01

    申请人： Renzo Takeda ,  Motoo Aoyama ,  Masanao Moriwaki

    发明人： Renzo Takeda ,  Motoo Aoyama ,  Masanao Moriwaki

    IPC分类号： G21C5/20 ,  G21C1/00 ,  G21C1/08 ,  G21C3/00 ,  G21C3/328 ,  G21C3/62 ,  G21C7/10 ,  G21C7/113 ,  G21C7/117 ,  G21C1/04

    CPC分类号： G21C1/084 ,  G21C1/00 ,  G21C3/00 ,  G21C7/113 ,  G21Y2002/201 ,  G21Y2002/601 ,  G21Y2004/101 ,  G21Y2004/30 ,  G21Y2004/60 ,  Y02E30/31 ,  Y02E30/39

    摘要： To provide a reactor core for light water cooled reactor, a fuel assembly and a control rod intended for Pu multi-recycling at a breeding ratio of about 1.0, or 1.0 or more while keeping the economical or safety performance to the same level as in BWR now under operation, that is, while minimizing the change for the incore structures and maintaining the void coefficient negative. A reactor core for a light water cooled reactor having an effective fuel-to-water volume ratio of 0.1 to 0.6 by the combination of a dense lattice fuel assembly constituted of fuel rods formed by adding Pu to degraded uranium, natural uranium, depleted uranium or low concentrated uranium, coolants at high void fraction of 45% to 70% and a cluster-type, Y-type or cruciform control rod.

    摘要翻译： 为了提供轻水冷却反应堆的反应堆堆芯，燃料组件和控制棒，用于以约1.0或1.0或更多的育种比率进行Pu多重循环，同时将经济或安全性能保持在与BWR相同的水平 现在正在运行，即尽可能减少腋窝结构的变化并保持空白系数为负。 一种用于轻水冷却反应器的反应堆堆芯，其由燃料棒组合而成的密集晶格燃料组合组合，其有效燃料与水的体积比为0.1至0.6，所述燃料棒通过将Pu添加到退化的铀，天然铀，贫化铀或 低浓度铀，高孔隙率为45％至70％的冷却剂和簇型Y型或十字形控制棒。

    Pressurized water reactor vessel with slotted support columns
    32.
    发明授权
    Pressurized water reactor vessel with slotted support columns 失效
    具有开槽支撑柱的加压水反应堆容器

    公开(公告)号：US5553107A

    公开(公告)日：1996-09-03

    申请号：US380785

    申请日：1995-01-30

    申请人： Richard E. Schwirian ,  Theo van de Venne

    发明人： Richard E. Schwirian ,  Theo van de Venne

    IPC分类号： G21C13/00 ,  G21C15/02 ,  G21C1/04

    CPC分类号： G21C15/02 ,  G21Y2002/204 ,  G21Y2004/302 ,  Y02E30/32

    摘要： A pressurized water nuclear reactor pressure vessel has an upper core support plate with passageways for the passage of coolant, an upper support plate above the upper core support plate, and peripheral hollow support columns extending upwardly above the passageways in the upper core support plate for supporting the upper support plate above the upper core support plate and for guiding coolant from the passageways into the plenum. Each peripheral support column has a peripherally slotted upper portion for guiding the coolant in the peripheral support column into the plenum and an unslotted lower portion.

    摘要翻译： 加压水核反应堆压力容器具有上芯体支撑板，其具有用于冷却剂通过的通道，在上芯支撑板上方的上支撑板和在上芯支撑板中的通道上方向上延伸的外周中空支撑柱，用于支撑 上支撑板在上芯支撑板上方，用于将冷却剂从通道引导进入通风室。 每个周边支撑柱具有周向开槽的上部部分，用于将周边支撑柱中的冷却剂引导到通风室中，以及未封闭的下部。

    Lower tie plate strainers including double corrugated strainers for boiling water reactors
    33.
    发明授权
    Lower tie plate strainers including double corrugated strainers for boiling water reactors 失效
    下层连接板过滤器，包括用于沸水反应堆的双波纹过滤器

    公开(公告)号：US5483564A

    公开(公告)日：1996-01-09

    申请号：US196738

    申请日：1994-02-15

    申请人： Bruce Matzner ,  Eric B. Johansson ,  Richard A. Wolters, Jr. ,  Thomas G. Dunlap ,  Robert B. Elkins ,  Harold B. King ,  Paul W. Sick ,  Kevin L. Ledford

    发明人： Bruce Matzner ,  Eric B. Johansson ,  Richard A. Wolters, Jr. ,  Thomas G. Dunlap ,  Robert B. Elkins ,  Harold B. King ,  Paul W. Sick ,  Kevin L. Ledford

    IPC分类号： G21C3/33 ,  G21C1/08 ,  G21C3/30 ,  G21C3/32 ,  G21C1/04

    CPC分类号： G21C3/3206 ,  G21C1/086 ,  G21Y2002/104 ,  G21Y2002/201 ,  G21Y2004/30 ,  G21Y2004/302 ,  G21Y2004/303 ,  Y02E30/40

    摘要： In a boiling water reactor fuel bundle, a three dimensional debris catching grid construction is placed within the flow volume defined by the lower tie plate assembly between the inlet nozzle and upper fuel rod supporting grid. A perforated plate is utilized having round holes as small consistent with the prevention of inadvertent closure due crudding and a hole pitch consistent with mechanical integrity requirements. The perforated plate is placed in a three dimensional construction such as a dome, cylinder, pyramid, inverted pyramid or corrugated construction spanning the flow volume of the lower tie plate assembly. As a consequence of this three dimensional grid construction, the total flow through area of the perforations in the metal plate does not introduce appreciable pressure drop in the lower tie plate assembly between the inlet nozzle and the rod supporting grid. Fluid movement at the debris restraining holes of the grid construction has a low flow velocity and a change in flow direction before passing through the holes to discourage debris from finding its way through the grid holes. Finally, it is possible to incorporate debris traps within the flow volume of the lower tie plate assembly that can cause trapping and subsequent removal of trapped debris upon fuel bundle replacement. A double corrugated plate having large holes in the lower plate and smaller holes in the upper plate is utilized to trap debris.

    摘要翻译： 在沸水反应堆燃料束中，三维碎屑捕获栅格结构放置在由入口喷嘴和上燃料棒支撑栅之间的下连接板组件限定的流动体积内。 使用多孔板，其圆形孔小，防止由于粗糙度而导致的无意闭合，以及与机械完整性要求一致的孔间距。 多孔板被放置在三维结构中，例如圆顶，圆柱体，金字塔，倒金字塔或波纹结构，跨越下拉板组件的流动体积。 作为这种三维格栅结构的结果，金属板中的穿孔面积的总流量不会在入口喷嘴和支撑杆之间的下连接板组件中引入明显的压降。 格栅结构的碎屑限制孔处的流体运动在通过孔之前具有低流速和流动方向的变化，以阻止碎屑通过栅格孔。 最后，可以将碎屑收集器结合在下连接板组件的流动体积内，这可以导致在燃料束更换时捕获和随后的捕获的碎屑的去除。 在下板中具有大孔的双层波纹板和上板中的较小孔用于捕集碎屑。

    Light water breeder reactor using a uranium-plutonium cycle
    35.
    发明授权
    Light water breeder reactor using a uranium-plutonium cycle 失效
    使用铀 - 钚循环的轻水养殖反应堆

    公开(公告)号：US4968476A

    公开(公告)日：1990-11-06

    申请号：US378482

    申请日：1982-05-14

    申请人： Alvin Radkowsky

    发明人： Alvin Radkowsky

    IPC分类号： G21C1/04

    CPC分类号： G21C1/04 ,  Y02E30/40 ,  Y10S376/911

    摘要： A light water cooled and moderated nuclear reactor for breeding fissile material on a uranium-plutonium cycle and also a method of operating a light water cooled and moderated reactor having a prebreeder section fueled from plutonium extracted from fuel discharged by a uranium burner or converter burner core. Subsequently, the prebreeder section, together with a breeder section, operated as coupled cores or modules, becomes self-sustaining and able to breed fissile plutonium fuels at a relatively high rate of gain.

    摘要翻译： 一种用于在铀 - 钚循环中培养易裂变材料的轻水冷却和调节核反应堆，以及一种操作轻水冷却和温和反应器的方法，该反应器具有从由铀燃烧器或转炉燃烧器芯排出的燃料中提取的钚燃烧的预养料部分 。 随后，饲养员部分与育种部门一起作为耦合的核心或模块运作，变得自给自足，能以相对较高的增益收养易裂变钚燃料。

    Nuclear reactor
    36.
    发明授权
    Nuclear reactor 失效
    核反应堆

    公开(公告)号：US4716013A

    公开(公告)日：1987-12-29

    申请号：US828553

    申请日：1986-02-07

    申请人： Luciano Veronesi ,  Daniel C. Garner

    发明人： Luciano Veronesi ,  Daniel C. Garner

    IPC分类号： G21C5/08 ,  G21C1/04

    CPC分类号： G21C5/08 ,  Y02E30/40

    摘要： Failure of the control-rod assemblies, particularly the control-rod guides and the WDRC's, by transverse flow of coolant through these members is prevented by directing the flow through a calandria above the guides. To avoid a high pressure drop in the coolant between the calandria and the outlet nozzles, the outlet nozzles are at the same level as the calandria. The calandria has hollow tubes between upper and lower supports. The length of the portion of the tubes between the supports is greater than the diameter of the outlet nozzles.

    摘要翻译： 控制杆组件，特别是控制杆导向器和WDRC的通过这些构件的冷却剂横向流动的故障通过引导流动通过引导件上方的卡拉迪亚而被防止。 为了避免Calandria和出口喷嘴之间的冷却剂的高压降，出口喷嘴与Calandria处于同一水平。 加热器在上部和下部支撑件之间具有中空管。 在支撑件之间的管部分的长度大于出口喷嘴的直径。