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8 条记录 (耗时 0.188 秒)

    Control rod velocity limiter
    1.
    发明授权
    Control rod velocity limiter 失效
    控制杆速度限制器

    公开(公告)号：US4624826A

    公开(公告)日：1986-11-25

    申请号：US646761

    申请日：1984-09-04

    申请人： James E. Cearley ,  John C. Carruth ,  Robert C. Dixon ,  Stephanie S. Spencer ,  Jaime A. Zuloaga, Jr.

    发明人： James E. Cearley ,  John C. Carruth ,  Robert C. Dixon ,  Stephanie S. Spencer ,  Jaime A. Zuloaga, Jr.

    IPC分类号： G21C7/113 ,  G21C7/16 ,  G21C9/02 ,  G21C7/20 ,  F16F9/00

    CPC分类号： G21C9/02 ,  G21C7/16 ,  G21Y2002/201 ,  G21Y2004/30 ,  G21Y2004/305 ,  Y02E30/39

    摘要： A velocity limiting device providing greater resistance to motion through a fluid in one direction than in the opposite direction. The device includes a toroidally shaped control member having a smooth generally conical surface on one side for low resistance movement through the fluid in the one direction. On its opposite side the control member is formed with at least one groove providing a concave surface spaced from which is an arrangement of vanes forming a jet for directing a stream of fluid into the groove upon movement in the opposite direction whereby the resultant increase in fluid turbulence increases resistance to rapid movement in this opposite direction.

    摘要翻译： 速度限制装置在一个方向上提供比在相反方向更大的阻力通过流体的阻力。 该装置包括环形控制构件，其在一侧具有平滑的大致圆锥形的表面，用于在一个方向上通过流体的低阻力运动。 在其相反侧，控制构件形成有至少一个凹槽，其提供间隔开的凹形表面，所述凹形表面是形成喷嘴的叶片布置，用于在相反方向上移动时将流体流引导到凹槽中，由此导致流体的增加 湍流增加了在相反方向快速运动的阻力。

    Lower tie plate strainers including helical spring strainers for boiling water reactors
    4.
    发明授权
    Lower tie plate strainers including helical spring strainers for boiling water reactors 失效
    下部连接板过滤器，包括用于沸水反应堆的螺旋弹簧过滤器

    公开(公告)号：US5390220A

    公开(公告)日：1995-02-14

    申请号：US158550

    申请日：1993-11-29

    申请人： Jaime A. Zuloaga, Jr. ,  Eric B. Johansson

    发明人： Jaime A. Zuloaga, Jr. ,  Eric B. Johansson

    IPC分类号： G21C3/33 ,  G21C3/30 ,  G21C3/32 ,  G21C3/04 ,  G21C19/04

    CPC分类号： G21C3/3206 ,  G21Y2002/207 ,  G21Y2004/30 ,  G21Y2004/302 ,  Y02E30/40

    摘要： A debris catching arrangement is disclosed for incorporation within the flow plenum up stream or below the rod supporting grid of the lower tie plate assembly. The device is preferably placed within the lower tie plate flow plenum between the fuel bundle inlet orifice and the rod supporting grid structure supporting the fuel rods; alternate placement can include any inlet channel upstream of the fuel rods including the fuel support casting. The disclosed debris catching designs include successive side-by-side coil springs placed in layers across the tie plate plenum. Preferably, the respective tie plates are placed in alternating directions with a first layer of springs oriented at 90.degree. to an alternate and underlying layer of springs. Multiple layers of such springs are used with four layers being preferred. At their respective crossing points, the springs of adjacent layers are joined--as by welding--with the result that the filter is a solid unitary mass.

    摘要翻译： 公开了一种碎屑捕获装置，用于结合在上部流动通道内或下部拉板组件的杆支撑格栅下方。 该装置优选地放置在燃料束入口孔和支撑燃料棒的杆支撑格栅结构之间的下连接板流通风室内; 替代放置可以包括燃料棒上游的任何入口通道，包括燃料支撑铸件。 所公开的碎片捕获设计包括跨越连接板集气室的连续并排的螺旋弹簧。 优选地，将相应的连接板放置在交替的方向上，使第一层弹簧定向成90°的弹簧的替代和下层。 使用多层这样的弹簧，优选四层。 在它们各自的交叉点处，相邻层的弹簧通过焊接连接 - 结果是过滤器是固体单一质量。

    Low pressure double offset plate catcher for a nuclear reactor
    5.
    发明授权
    Low pressure double offset plate catcher for a nuclear reactor 失效
    用于核反应堆的低压双胶板捕集器

    公开(公告)号：US5528640A

    公开(公告)日：1996-06-18

    申请号：US335959

    申请日：1994-11-07

    申请人： Eric B. Johansson ,  Jaime A. Zuloaga, Jr. ,  David W. Danielson

    发明人： Eric B. Johansson ,  Jaime A. Zuloaga, Jr. ,  David W. Danielson

    IPC分类号： G21C3/33 ,  G21C3/30 ,  G21C3/32 ,  G21C19/42

    CPC分类号： G21C3/3206 ,  Y02E30/40

    摘要： A fuel bundle and lower tie plate assembly for a nuclear reactor includes a plurality of fuel rods supported between an upper tie plate and a lower tie plate assembly. The lower tie plate assembly includes an upper grid portion and a lower body portion, the upper grid portion having a plurality of fuel rod supporting bosses interconnected by a plurality of webs thus forming flow openings between the bosses. The body portion includes an inlet nozzle and a peripheral wall extending between the bottom nozzle and the upper grid portion to define a flow volume therein. A debris catcher is located within the flow volume and includes a pair of superposed plates, the plates each having a plurality of holes of substantially the same size, shape and pitch, but wherein the holes of one of the pair of plates are offset from the holes of the other of the pair of plates by one half the hole pitch.

    摘要翻译： 用于核反应堆的燃料束和下连接板组件包括支撑在上连接板和下拉板组件之间的多个燃料棒。 下连接板组件包括上格栅部分和下主体部分，上格栅部分具有多个燃料棒支撑凸起，所述多个燃料棒支撑凸起由多个腹板互连，从而在凸台之间形成流动开口。 主体部分包括入口喷嘴和在底部喷嘴和上部格栅部分之间延伸以在其中限定流体积的周壁。 碎屑捕集器位于流体积内并且包括一对叠置的板，每个板具有大致相同尺寸，形状和间距的多个孔，但是其中一对板中的一个的孔偏离 一对板的另一个孔的孔为孔间距的一半。

    Spring retention of upper tie plate and fuel bundle channel in a nuclear reactor assembly
    6.
    发明授权
    Spring retention of upper tie plate and fuel bundle channel in a nuclear reactor assembly 失效
    弹簧保持在上层连接板和燃料束通道在核反应堆组件

    公开(公告)号：US5436946A

    公开(公告)日：1995-07-25

    申请号：US262797

    申请日：1994-06-20

    申请人： Michael V. Curulla ,  Eric B. Johansson ,  Carl R. Mefford ,  Jerry T. Spell ,  Robert B. Elkins ,  Jaime A. Zuloaga, Jr.

    发明人： Michael V. Curulla ,  Eric B. Johansson ,  Carl R. Mefford ,  Jerry T. Spell ,  Robert B. Elkins ,  Jaime A. Zuloaga, Jr.

    IPC分类号： G21C3/33 ,  G21C3/12 ,  G21C21/00 ,  G21C3/32

    CPC分类号： G21C3/12 ,  G21Y2002/104 ,  G21Y2004/301 ,  Y02E30/40

    摘要： Leaf-type springs are inserted into slots in an upper tie plate of a nuclear fuel assembly and bear against interior surfaces of the fuel channel to center the upper tie plate within the fuel channel. More robust similarly configured leaf springs are secured in slots in the upper tie plate and are cantilevered for bearing engagement through slots in the fuel assembly channel against the reactor top guide to bias the fuel assemblies toward the control rod. To mount each spring to the upper tie plate, the base of each leaf spring includes a central beam and a pair of outermost beams spaced from the central beam, all beams lying in a common plane. Laterally outwardly directed tabs are provided on the lower ends of the outer beams. Stops are provided intermediate the ends of the outer beams. By inserting the unstressed, unloaded base of the springs into the slots, the outer beams are displaced inwardly into a stressed condition. Once the tabs extend past the lower surface of the tie plate, the beams return to an unloaded, unstressed condition with the tabs and stops locking the springs to the tie plate. The distal ends of the springs bear against the channel or top guide, as applicable, to locate the upper tie plate within the channel and bias the fuel assembly and channel toward the control rod, respectively.

    摘要翻译： 叶型弹簧插入核燃料组件的上连接板中的槽中，并且抵靠燃料通道的内表面，以将上连接板定位在燃料通道内。 更坚固的类似构造的板簧固定在上连接板中的槽中，并且悬臂用于通过燃料组件通道中的槽抵靠反应器顶部引导件将轴承接合以将燃料组件偏压到控制杆。 为了将每个弹簧安装到上连接板上，每个板簧的基部包括中心梁和与中心梁间隔开的一对最外侧梁，所有梁位于公共平面中。 在外梁的下端设置有横向向外的突出部。 止动件设置在外梁的端部的中间。 通过将弹簧的无应力卸载基座插入槽中，外梁向内移动到应力状态。 一旦突片延伸穿过连接板的下表面，则梁将返回到无负载的无应力状态，并且止动器将弹簧锁定到连接板上。 弹簧的远端在适用的情况下抵靠通道或顶部引导件，以将上连接板定位在通道内，并将燃料组件和通道分别偏向控制杆。

    Lower tie plate strainers having double plate with offset holes for boiling water reactors
    7.
    发明授权
    Lower tie plate strainers having double plate with offset holes for boiling water reactors 失效
    具有用于沸水反应堆的带有偏移孔的双板的下连接板过滤器

    公开(公告)号：US5345483A

    公开(公告)日：1994-09-06

    申请号：US160721

    申请日：1993-12-02

    申请人： Eric B. Johansson ,  Kevin L. Ledford ,  Jaime A. Zuloaga, Jr. ,  David W. Danielson

    发明人： Eric B. Johansson ,  Kevin L. Ledford ,  Jaime A. Zuloaga, Jr. ,  David W. Danielson

    IPC分类号： G21C3/33 ,  G21C3/30 ,  G21C3/32 ,  G21C19/307 ,  G21C15/00

    CPC分类号： G21C19/307 ,  G21C3/3206 ,  G21Y2002/201 ,  G21Y2004/30 ,  Y02E30/40

    摘要： In a boiling water nuclear reactor fuel bundle, a debris catching arrangement is disclosed for incorporation within the flow plenum up stream or below the rod supporting grid of the lower tie plate assembly. The device is preferably placed within the lower tie plate flow plenum between the fuel bundle inlet orifice and the rod supporting grid structure supporting the fuel rods; alternate placement can include any inlet channel upstream of the fuel rods including the fuel support casting. Paired plates defining offset holes and bosses are utilized. The bosses are supported at plate webbing between the respective holes. The holes are preferably square in plan with appropriately relieved and rounded corners defining the edges of the webbing. The bosses may be cylindrical, square or rectangular in cross-section. In confrontation of plates to form the debris catching grid, each boss from one plate confronts a hole from the remaining plate. A system of edge ridges in conjunction with the bosses at each plate edge maintains the plates spatially separated with the bosses of each plate spaced from the webbing of the opposite plate. In the preferred embodiment, the plates are captured in the flow plenum of a two part tie plate. There results a three dimensional and sturdy debris catching construction which has low flow resistance through the continuum of defined flow passages while maintaining excellent debris entraining properties.

    摘要翻译： 在沸水核反应堆燃料束中，公开了一种碎屑捕集装置，用于结合在上部流动通道内或下连接板组件的杆支撑栅格下方。 该装置优选地放置在燃料束入口孔和支撑燃料棒的杆支撑格栅结构之间的下连接板流通风室内; 替代放置可以包括燃料棒上游的任何入口通道，包括燃料支撑铸件。 使用定义偏移孔和凸起的配对板。 凸台被支撑在相应的孔之间的板条带上。 这些孔优选地是平面的，具有限定织带边缘的适当减轻和圆角。 凸台可以是圆柱形，正方形或矩形的横截面。 在板对面形成碎片捕捉格栅时，一块板的每个凸台面对剩下的板上的一个孔。 与每个板边缘处的凸起结合的边缘脊的系统使得板的空间分离，每个板的凸起与相对板的织带间隔开。 在优选实施例中，板被捕获在两部分连接板的流动通风室中。 产生三维和坚固的碎片捕获结构，其通过限定的流动通道的连续体具有低流动阻力，同时保持优异的碎屑夹带性能。