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公开(公告)号：US5406604A
公开(公告)日：1995-04-11
申请号：US154067
申请日：1993-11-18
CPC分类号： G21C3/12 , G21C5/06 , G21Y2002/304 , G21Y2004/30 , Y02E30/40
摘要： A two part lower tie plate assembly is disclosed for use with a fuel bundle of a boiling water nuclear reactor. The two parts include a rod supporting grid section and nozzle section. Both the rod supporting grid section and the nozzle section are constructed asymmetrically. The rod supporting grid section contains one half of the total offset required for a D lattice lower tie plate and the nozzle section contains one half of the total offset required for a D lattice lower tie plate. When a D lattice lower tie plate is required, assembly occurs so that the offsets are additive. When a C lattice lower tie plate is required, assembly occurs that the offsets are subtractive. Assembly of the lower tie plate is provided be either bolting or welding. There results on single rod supporting grid and nozzle section components capable of assembly to fit either a C or a D lattice.
摘要翻译： 公开了与沸水核反应堆的燃料束一起使用的两部分下部连接板组件。 这两个部分包括一个杆支撑网格部分和喷嘴部分。 杆支撑网格部分和喷嘴部分均不对称地构造。 杆支撑网格部分包含D格子下连接板所需的总偏移量的一半，并且喷嘴部分包含D格子下连接板所需的总偏移量的一半。 当需要D格子下连接板时，发生组装，使得偏移量是相加的。 当需要C格子下连接板时，会发生偏移减法的装配。 下连接板的组装提供螺栓连接或焊接。 导致单杆支撑网格和喷嘴部分组件能够组装以适应C或D格。
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2.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
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。
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公开(公告)号：US5706318A
公开(公告)日：1998-01-06
申请号：US655889
申请日：1996-05-31
CPC分类号： G21C7/113 , G21Y2002/104 , G21Y2002/206 , G21Y2004/305 , Y02E30/39
摘要： A control rod for a nuclear reactor incorporates a plurality of neutron absorber tubes containing neutron absorbing materials. The absorber tubes are substantially rectangular inside and outside, each tube containing at least one axial stack of substantially round neutron absorbing material segments or capsules.
摘要翻译： 用于核反应堆的控制棒包括多个含有中子吸收材料的中子吸收管。 吸收管在内部和外部基本上是矩形的，每个管包含至少一个基本上圆形的中子吸收材料段或胶囊的轴向堆叠。
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4.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
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。
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公开(公告)号：US5719912A
公开(公告)日：1998-02-17
申请号：US615879
申请日：1996-03-14
CPC分类号： G21C7/113 , G21Y2002/207 , G21Y2004/301 , Y02E30/39
摘要： The control rod includes a plurality of elongated tubes containing neutron-absorbing material in a planar array to form wings on opposite sides of a central axis of the control rod. Each tube is formed with a plurality of protuberances in excess of four such that the tubes can be welded to adjacent tubes with the weld lines disposed inwardly of the side surfaces of the wings to improve the flexibility of the control rod. The wings of each planar array have connecting elements of each other planar array thereof, enabling lateral movement of the planar arrays of wings relative to one another to further enhance flexibility and movement of the control rod between the fuel channels of the nuclear core.
摘要翻译： 控制杆包括多个细长管，其包含平面阵列中的中子吸收材料，以在控制棒的中心轴线的相对侧上形成翼。 每个管形成有多个超过四个的突起，使得管可以焊接到相邻的管，焊接线设置在翼的侧表面的内侧，以提高控制杆的柔性。 每个平面阵列的翼部具有彼此平面的阵列的连接元件，使翼的平面阵列相对于彼此能够横向运动，以进一步增强控制杆在核心的燃料通道之间的柔性和运动。
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公开(公告)号：US5812623A
公开(公告)日：1998-09-22
申请号：US655891
申请日：1996-05-31
CPC分类号： G21C7/113 , G21C21/18 , G21Y2002/302 , G21Y2002/303 , G21Y2004/30 , G21Y2004/40 , Y02E30/39 , Y10T29/49364 , Y10T29/49924
摘要： A control rod assembly for a nuclear reactor, wherein a plurality of absorber tubes are arranged and welded in a side-by-side array, the improvement wherein each absorber tube is formed with an elongated slot extending substantially the entire length of the absorber tube on one side of the tube, and with an elongated tab extending substantially the entire length of the absorber tube on a diametrically opposed side of the tube such that, for adjacent absorber tubes, a joint is formed wherein the tab of one tube is located within the slot of the other.
摘要翻译： 一种用于核反应堆的控制杆组件，其中多个吸收管以并列排列的方式排列和焊接，其改进在于每个吸收管形成有基本上延伸到吸收管的整个长度上的细长槽 管的一侧，并且具有在管的径向相对的侧面上基本上延伸吸收管的整个长度的细长突出部，使得对于相邻的吸收管，形成接头，其中一个管的突出部位于管的内侧 另一个的槽。
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公开(公告)号：US5592520A
公开(公告)日：1997-01-07
申请号：US520880
申请日：1995-08-30
CPC分类号： G21C7/113 , G21Y2004/303 , Y02E30/39
摘要： A window in the control rod for a nuclear reactor has flanges along its opposite sides. A latch handle has slots along its opposite sides. The latch handle is sized and configured such that in a first angular orientation, the latch handle may be received within the plane and peripheral confines of the window and, upon rotation of the latch handle through 90.degree. into a second orientation, engages the slotted sides of the latch handle with the flanges of the window to capture the latch handle within the window while simultaneously enabling linear vertical movement of the latch handle relative to the window. The latch handle is then attached to a shaft for operating a coupling mechanism between the control rod and the control rod drive.
摘要翻译： 用于核反应堆的控制棒中的窗口沿其相对侧具有凸缘。 闩锁手柄沿其相对侧具有槽。 闩锁手柄的尺寸和构造使得在第一角度取向中，闩锁手柄可以被容纳在窗口的平面和周边限制内，并且当锁闩手柄通过90°旋转到第二方向时， 闩锁手柄与窗口的凸缘捕获窗口内的闩锁手柄，同时使得闩锁手柄相对于窗口的线性垂直运动。 然后将闩锁手柄附接到轴上，以操作控制杆和控制杆驱动器之间的联接机构。
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