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8 条记录 (耗时 0.046 秒)

    Multi-spring strip spacer for nuclear fuel bundles
    1.
    发明授权
    Multi-spring strip spacer for nuclear fuel bundles 失效
    用于核燃料束的多弹簧带间隔件

    公开(公告)号：US5757874A

    公开(公告)日：1998-05-26

    申请号：US678046

    申请日：1996-07-10

    申请人： Edward A. Croteau ,  Robert B. Elkins ,  Thomas G. Evans ,  Harold B. King ,  David G. Smith ,  Russell P. Higgins ,  Gerald M. Latter

    发明人： Edward A. Croteau ,  Robert B. Elkins ,  Thomas G. Evans ,  Harold B. King ,  David G. Smith ,  Russell P. Higgins ,  Gerald M. Latter

    IPC分类号： G21C3/34 ,  G21C3/356

    CPC分类号： G21C3/3563 ,  G21Y2002/302 ,  G21Y2004/30 ,  Y02E30/40

    摘要： The spacer comprises a plurality of strips interleaved with one another to form an eggcrate-type pattern defining essentially rectilinear cells for each fuel rod. Each strip includes a central body portion with cantilevered loop spring-like projections extending to opposite sides, with spring contact portions projecting inwardly. Stops are provided along each of the central body regions of the strips intermediate the loop springs that project to the opposite side of the strip. Adjoining walls have loop spring portions for biasing the rod into engagement with opposing stops whereby each fuel rod is supported at six contact points, i.e., four spring contact points and two hard stop contacts opposite the paired spring contacts.

    摘要翻译： 间隔物包括彼此交错的多个条，以形成为每个燃料棒基本上限定直线细胞的蛋类型图案。 每个条带包括中心主体部分，其具有延伸到相对侧的悬臂弹簧状突出部，弹簧接触部分向内突出。 沿着条带的每个中心体区域提供止动件，该条带在环形弹簧之间延伸，该弹簧突出到条带的相对侧。 相邻的墙壁具有环形弹簧部分，用于将杆偏压成与相对的止挡接合，由此每个燃料棒被支撑在六个接触点处，即四个弹簧接触点和与成对的弹簧接触件相对的两个硬止动触头。

    Fuel assembly structure using channel for load support
    3.
    发明授权
    Fuel assembly structure using channel for load support 失效
    燃油组件结构使用通道进行负载支持

    公开(公告)号：US5627866A

    公开(公告)日：1997-05-06

    申请号：US542382

    申请日：1995-10-12

    申请人： Thomas G. Dunlap ,  Robert B. Elkins ,  Christian D. Frederickson ,  Russell P. Higgins

    发明人： Thomas G. Dunlap ,  Robert B. Elkins ,  Christian D. Frederickson ,  Russell P. Higgins

    IPC分类号： G21C3/14 ,  G21C3/324 ,  G21C3/334 ,  G21C3/322

    CPC分类号： G21C3/324 ,  G21C3/14 ,  G21C3/334 ,  G21Y2002/302 ,  G21Y2004/301 ,  Y02E30/40

    摘要： A fuel assembly for a nuclear reactor vessel includes a plurality of fuel rods, at least one coolant rod, a lower tie plate supporting the fuel rods and coolant rod, and a channel surrounding the fuel rods, coolant rod and tie plate. The lower tie plate is supported by the channel such that the channel carries a load of the fuel assembly. In one aspect of the invention, an upper tie plate includes two spring loaded latch pins engageable with corresponding apertures in the channel. A transition member supports the lower tie plate and is rigidly secured to the channel. Thus, when lifting the fuel assembly from the reactor, the channel bears the load of the fuel assembly. End gussets or clips are welded to the channel and inserted into the transition member, which serve as a secondary support for the transition member in the event that its primary connection to the channel fails. A channel guide member is secured to the, upper tie plate and includes two ears that are received in ear apertures in the channel. The channel guide and ears thus provide a redundant attachment between the tie plate and the channel in the event that the spring loaded latch pins fail. If it is desired to remove the fuel bundle from the channel, the upper tie plate is released from the assembly by detaching the guide member and releasing the spring loaded latch pins. The bundle can then be removed from the channel by attaching a grapple head to the coolant rod ends, which are specially shaped to facilitate an attachment tool.

    摘要翻译： 用于核反应堆容器的燃料组件包括多个燃料棒，至少一个冷却剂棒，支撑燃料棒和冷却剂棒的下部连接板以及围绕燃料棒，冷却剂棒和连接板的通道。 下连接板由通道支撑，使得通道承载燃料组件的负载。 在本发明的一个方面，上连接板包括可与通道中的相应孔接合的两个弹簧加载的闩锁销。 过渡构件支撑下连接板并且刚性地固定到通道。 因此，当将燃料组件从反应器提升时，通道承受燃料组件的负载。 端部角撑板或夹子焊接到通道并插入到过渡构件中，在过渡构件的主要连接失败的情况下，过渡构件用作过渡构件的辅助支撑。 通道引导构件固定到上连接板，并且包括容纳在通道中的耳孔中的两个耳朵。 如果弹簧加载的闩锁销故障，则通道引导件和耳朵因此提供了连接板和通道之间的冗余连接。 如果希望从通道中去除燃料束，则通过分离引导构件并释放弹簧加载的闩锁销，上部联接板从组件中释放。 然后可以通过将抓斗头附接到冷却剂杆端部而将束从通道移除，冷却剂杆端部被特别成形以便于附接工具。

    Fuel spacer/water rod capture apparatus and methods for boiling water nuclear reactors
    4.
    发明授权
    Fuel spacer/water rod capture apparatus and methods for boiling water nuclear reactors 有权
    燃料间隔器/水杆捕集装置和沸水核反应堆的方法

    公开(公告)号：US06735268B2

    公开(公告)日：2004-05-11

    申请号：US10119293

    申请日：2002-04-10

    申请人： Russell P. Higgins ,  David G. Smith

    发明人： Russell P. Higgins ,  David G. Smith

    IPC分类号： G21C332

    CPC分类号： G21C3/332 ,  G21C3/334 ,  G21Y2002/302 ,  G21Y2002/303 ,  G21Y2004/301 ,  G21Y2004/40 ,  Y02E30/40

    摘要： The spacer/water rod retention assembly includes a clip secured to the spacer having a slot perimetrically bounded both axially and laterally spaced portions of the clip. A resilient tab projects from one side portion into the slot. A water rod has a projecting tab which, upon relative rotation of the spacer and water rod, engages and deflects the clip tab to enable the water rod tab to reside in the clip slot. When the clip tab returns to its initial position, substantial relative rotation between the water rod and spacer is precluded and axial connection between the spacer and water rod is assured. In another form, the water rod tab projects into a slot of the clip. An adjacent water rod prevents rotation of the water rod tab in the opposite direction, thereby capturing the spacer and water rod and preventing relative axial movement.

    摘要翻译： 间隔件/水杆保持组件包括固定到间隔件的夹子，该夹子具有围绕夹子的轴向和横向间隔开的两个周边的狭槽。 弹性片从一侧突出到槽中。 水杆具有突出的突片，当突出突片相对于间隔件和水杆相对旋转时，该突出接头与夹片接合并偏转，以使水杆接头位于夹子槽中。 当夹片返回到其初始位置时，排除了水杆和间隔件之间的显着的相对旋转，并且确保了间隔件和水杆之间的轴向连接。 在另一种形式中，水杆接头突出到夹子的狭槽中。 相邻的水杆防止水杆接头在相反方向旋转，从而捕获间隔件和水杆，并防止相对轴向移动。

    Fuel spacer/water rod capture apparatus and methods for boiling water nuclear reactors
    5.
    发明授权
    Fuel spacer/water rod capture apparatus and methods for boiling water nuclear reactors 有权
    燃料间隔器/水杆捕集装置和沸水核反应堆的方法

    公开(公告)号：US06285729B1

    公开(公告)日：2001-09-04

    申请号：US09306826

    申请日：1999-05-07

    申请人： Russell P. Higgins ,  David G. Smith

    发明人： Russell P. Higgins ,  David G. Smith

    IPC分类号： G21C332

    CPC分类号： G21C3/334 ,  G21C3/34 ,  G21Y2002/204 ,  G21Y2002/303 ,  G21Y2004/301 ,  G21Y2004/40 ,  Y02E30/40

    摘要： The spacer/water rod retention assembly includes a clip secured to the spacer having a slot perimetrically bounded both axially and laterally spaced portions of the clip. A resilient tab projects from one side portion into the slot. A water rod has a projecting tab which, upon relative rotation of the spacer and water rod, engages and deflects the clip tab to enable the water rod tab to reside in the clip slot. When the clip tab returns to its initial position, substantial relative rotation between the water rod and spacer is precluded and axial connection between the spacer and water rod is assured. In another form, the water rod tab projects into a slot of the clip. An adjacent water rod prevents rotation of the water rod tab in the opposite direction, thereby capturing the spacer and water rod and preventing relative axial movement.

    摘要翻译： 间隔件/水杆保持组件包括固定到间隔件的夹子，该夹子具有围绕夹子的轴向和横向间隔开的两个周边的狭槽。 弹性片从一侧突出到槽中。 水杆具有突出的突片，当突出突片相对于间隔件和水杆相对旋转时，该突出接头与夹片接合并偏转，以使水杆接头位于夹子槽中。 当夹片返回到其初始位置时，排除了水杆和间隔件之间的显着的相对旋转，并且确保了间隔件和水杆之间的轴向连接。 在另一种形式中，水杆接头突出到夹子的狭槽中。 相邻的水杆防止水杆接头在相反方向旋转，从而捕获间隔件和水杆，并防止相对轴向移动。

    Partial length rod upper end plug and grapples therefor
    8.
    发明授权
    Partial length rod upper end plug and grapples therefor 失效
    部分长杆杆上端塞和抓钩

    公开(公告)号：US5280508A

    公开(公告)日：1994-01-18

    申请号：US18476

    申请日：1993-02-16

    申请人： Bob Y. Okashima ,  Gary I. Borchardt ,  Peter A. Peterson ,  Russell P. Higgins

    发明人： Bob Y. Okashima ,  Gary I. Borchardt ,  Peter A. Peterson ,  Russell P. Higgins

    IPC分类号： G21C3/10 ,  G21C3/326 ,  G21C3/335 ,  G21C19/105 ,  G21C19/19 ,  G21C19/10

    CPC分类号： G21C3/335 ,  G21C19/105 ,  G21Y2002/202 ,  G21Y2002/206 ,  G21Y2002/302 ,  G21Y2002/401 ,  G21Y2004/30 ,  G21Y2004/501 ,  Y02E30/40

    摘要： A part length fuel rod tip and group of tip grasping tools is set forth for the removal, inspection and replacement of part length fuel rods from a fuel bundle having a part length rods interspersed with a majority of conventional full length rods. The part length fuel rod tip includes a longitudinal keyway allowing torque to be exerted on the fuel rod and a horizontal slot enabling grasping of the fuel rod for vertical withdrawal and replacement movement of the fuel rod. The tools include a torque socket for applying high torque forces to the part length rod for unscrewing the rod when the rod becomes stuck at its threaded connection to the lower tie plate, a tip grasping tool for permitting normal unscrewing torque and grasping for vertical withdrawal and replacement, and finally a tool having both high torque and grasping characteristics. In each case, the diameter of the tools is restricted to enable access to the part length fuel rods through the spacers overlying the upwardly exposed ends of the part length fuel rods.

    摘要翻译： 提出了一部分长度的燃料棒尖端和一组尖端抓取工具，用于从具有散布有大多数常规全长杆的部分长度棒的燃料束移除，检查和更换部分长度的燃料棒。 部件长度燃料棒末端包括允许施加在燃料棒上的扭矩的纵向键槽和能够抓住燃料棒的水平槽，用于燃料棒的垂直取出和更换运动。 这些工具包括一个转矩插座，用于当杆被卡在与下连接板的螺纹连接处时，向部件长度杆施加高扭矩力，用于旋转杆;尖部抓取工具，用于允许正常的旋松扭矩和抓取用于垂直取出; 更换，最后是具有高转矩和抓取特性的工具。 在每种情况下，工具的直径被限制以使得能够通过覆盖部件长度燃料棒的向上暴露的端部的间隔件接近部件长度的燃料棒。