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1.发明申请公开(公告)号：US20130272477A1
公开(公告)日：2013-10-17
申请号：US13537049
申请日：2012-06-29
CPC分类号： G21C3/3206 , G21C3/322 , G21C3/3305 , G21C21/02 , Y02E30/40
摘要： In a nuclear reactor core having fuel assemblies with upper and lower end fittings, a debris filter plate is attached to a lower end fitting having a skirt. The filter prevents debris from entering the fuel assembly, while the skirt prevents the trapped debris from sliding off the lower end fitting and continuing into the core. The lower end fitting is formed from a substantially square base and has flow channels to allow coolant to flow through it to the fuel assembly. The skirt is an extension of the metal of the lower end fitting that extends around the perimeter of the lower end fitting, spanning all four corners of the lower end fitting. In addition to capturing debris, the skirt also positions the filter, which may be manufactured from the same metal as the lower end fitting.
摘要翻译： 在具有具有上端和下端配件的燃料组件的核反应堆堆芯中，碎屑过滤板连接到具有裙部的下端配件。 过滤器防止碎屑进入燃料组件，而裙部防止被捕获的碎屑从下端配件滑落并继续进入芯部。 下端配件由大致正方形的底座形成并具有允许冷却剂流过其的燃料组件的流动通道。 裙部是下端配件的金属的延伸部分，其围绕下端配件的周边延伸，跨越下端配件的所有四个角落。 除了捕获碎屑之外，裙部还定位过滤器，其可以由与下端配件相同的金属制造。
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公开(公告)号：US10124472B2
公开(公告)日：2018-11-13
申请号：US13447655
申请日：2012-04-16
摘要： A fuel assembly includes a plurality of fuel rods comprising fissile material, a plurality of guide tubes interspersed amongst the fuel rods, an upper end fitting connected with upper ends of guide tubes, and a lower end fitting. End plugs are connected with the lower ends of the guide tubes. The end plugs have threaded male shafts extending from the lower ends of the guide tubes which pass through openings of the lower end fitting. Female lock nuts are threaded onto the threaded male shafts of the end plugs and lock with the lower end fitting to secure the lower end fitting to the lower ends of the guide tubes. The female lock nuts suitably have locking portions that are outwardly deformed into recesses of the lower end fitting to lock the lock nuts in place after tightening.
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公开(公告)号：US20130272481A1
公开(公告)日：2013-10-17
申请号：US13447655
申请日：2012-04-16
CPC分类号： B25B23/0092 , F16B23/0015 , F16B39/025 , G21C3/3305 , G21C3/331 , G21C3/3315 , Y02E30/40
摘要： A fuel assembly includes a plurality of fuel rods comprising fissile material, a plurality of guide tubes interspersed amongst the fuel rods, an upper end fitting connected with upper ends of guide tubes, and a lower end fitting. End plugs are connected with the lower ends of the guide tubes. The end plugs have threaded male shafts extending from the lower ends of the guide tubes which pass through openings of the lower end fitting. Female lock nuts are threaded onto the threaded male shafts of the end plugs and lock with the lower end fitting to secure the lower end fitting to the lower ends of the guide tubes. The female lock nuts suitably have locking portions that are outwardly deformed into recesses of the lower end fitting to lock the lock nuts in place after tightening. Dashpot tubes may be disposed in the lower ends of the guide tubes and connected to the end plugs.
摘要翻译： 燃料组件包括多个燃料棒，其包括裂变材料，多个引导管分散在燃料棒之间，上端配件与导管的上端连接，下端配件。 端塞与导管的下端连接。 端塞具有从引导管的下端延伸穿过下端配件的开口的螺纹阳轴。 母锁螺母拧入端塞的螺纹公轴上，并与下端配件锁定，以将下端配件固定在导管的下端。 母锁螺母适当地具有锁定部分，其向外变形成下端配件的凹部，以在紧固之后将锁定螺母锁定在适当位置。 缓冲器管可以设置在引导管的下端并连接到端塞。
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公开(公告)号：US20130272464A1
公开(公告)日：2013-10-17
申请号：US13553023
申请日：2012-07-19
申请人： Lewis A. Walton , Anne R. Austin
发明人： Lewis A. Walton , Anne R. Austin
摘要： A control rod assembly including at least one movable control rod including a neutron absorbing material, a control rod drive mechanism (CRDM) for controlling movement of the at least one control rod, and a coupling operatively connecting the at least one control rod and the CRDM. The coupling includes a terminal element engaged with a connecting rod of the CRDM and the at least one moveable control rod, and a kinetic energy absorbing element supported by the terminal element for absorbing kinetic energy during a SCRAM event, the kinetic energy absorbing element configured to act between the terminal element and an upper plate of an associated fuel assembly.
摘要翻译： 一种控制杆组件，包括至少一个包括中子吸收材料的可移动控制杆，用于控制所述至少一个控制杆的运动的控制杆驱动机构（CRDM）以及可操作地连接所述至少一个控制杆和所述CRDM 。 联接器包括与CRDM的连杆和至少一个可移动控制杆接合的端子元件和由SCRAM事件期间吸收动能的终端元件支撑的动能吸收元件，动能吸收元件被配置为 在端子元件和相关联的燃料组件的上板之间起作用。
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公开(公告)号：US07085340B2
公开(公告)日：2006-08-01
申请号：US10657025
申请日：2003-09-05
申请人： Mark P. Goldenfield , Quang M. Nguyen , Gregory E. Settle , Radu O. Pomirleanu , Abdelaziz M. Elmahdi , Lewis A. Walton , Raymond W. Brashier
发明人： Mark P. Goldenfield , Quang M. Nguyen , Gregory E. Settle , Radu O. Pomirleanu , Abdelaziz M. Elmahdi , Lewis A. Walton , Raymond W. Brashier
IPC分类号： G21C3/34
CPC分类号： G21C3/356 , G21Y2002/303 , G21Y2004/304 , Y02E30/40
摘要： A nuclear fuel assembly having a parallel array of elongated fuel elements supported between an upper and lower nozzle. Main support grids are substantially evenly spaced along the elongated dimension of the assembly to maintain the spacing between fuel elements. A plurality of auxiliary vibration-resistant grids respectively positioned between the main support grids in the middle third elongated dimension of the fuel elements, that are smaller in height and provide a larger fuel element contact area than the main support grids.
摘要翻译： 一种核燃料组件，其具有支撑在上部喷嘴和下部喷嘴之间的细长燃料元件的平行阵列。 主支撑栅格沿着组件的细长尺寸基本上均匀间隔，以保持燃料元件之间的间隔。 分别位于燃料元件的中间第三细长尺寸中的主支撑格栅之间的多个辅助防振网格，其高度较小并且提供比主支撑网格更大的燃料元件接触面积。
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公开(公告)号：US5410578A
公开(公告)日：1995-04-25
申请号：US946699
申请日：1992-09-18
申请人： Lewis A. Walton
发明人： Lewis A. Walton
IPC分类号： G21C1/12 , G21C3/04 , G21C3/18 , G21C3/20 , G21C3/30 , G21C5/12 , G21C15/06 , G21C15/08 , G21D5/02 , G21D5/06
CPC分类号： G21C1/12 , G21C15/06 , G21C15/08 , G21C3/042 , G21C3/18 , G21C3/20 , G21C3/30 , G21C5/12 , G21D5/02 , G21D5/06 , G21Y2002/104 , G21Y2004/10 , G21Y2004/303 , G21Y2004/40 , Y02E30/33 , Y10S376/909
摘要： A nuclear propulsion reactor. A pressure vessel is provided with a reactor core that is surrounded by a radial reflector. Nuclear fuel elements in the core are formed from a hexagonal housing made from a high performance moderator and having a plurality of axial bores that extend the full length of the housing. A stack of nuclear fuel compacts having axial bores for coolant flow is received in the central axial bore of the housing. Hollow lithium hydride slugs are received in the bores at the corners of the housing. A rocket nozzle is attached to one end of the pressure vessel. Coolant/propellant flows into a passageway around the rocket nozzle for cooling thereof, upward through bores in the reflector and through the hexagonal housings of the fuel elements, downward through the bores in the nuclear fuel compacts and then out the rocket nozzle where propulsive thrust is produced.
摘要翻译： 一个核推进反应堆。 压力容器设置有被径向反射器包围的反应堆芯。 核心中的核燃料元件由由高性能调节剂制成的六角形壳体形成，并且具有延伸壳体全长的多个轴向孔。 具有用于冷却剂流动的轴向孔的一堆核燃料压块容纳在壳体的中心轴向孔中。 中空的氢化锂s塞被收纳在外壳的角落的孔中。 火箭喷嘴连接到压力容器的一端。 冷却剂/推进剂流入火箭喷嘴周围的通道，用于冷却，向上通过反射器中的孔，并通过燃料元件的六边形壳体，向下通过核燃料压块中的孔，然后从火箭喷嘴出来，其中推进推力为 生产。
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公开(公告)号：US4678630A
公开(公告)日：1987-07-07
申请号：US798148
申请日：1985-11-15
CPC分类号： G21C3/33 , G21Y2002/303 , G21Y2004/30 , Y02E30/40
摘要： In nuclear reactor fuel assembly of the floating grid type, a spacer grid insert positioned concentrically about the central instrument guide tube prevents damage to instrument guide tube saddles caused by axial load, while permitting limited movement of the spacer grids.
摘要翻译： 在浮动格栅类型的核反应堆燃料组装中，围绕中心仪器导管同心地定位的间隔栅格插件防止由轴向载荷引起的仪器导管鞍座的损坏，同时允许间隔栅格的有限运动。
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公开(公告)号：US20140205055A1
公开(公告)日：2014-07-24
申请号：US13746116
申请日：2013-01-21
IPC分类号： G21C3/34
CPC分类号： G21C3/352 , G21C1/32 , G21C3/3563 , Y02E30/40
摘要： A spacer grid includes intersecting straps defining cells with springs and dimples arranged to hold fuel rods passing through the cells. The direction of the springs switches at a switch point in the spacer grid that is not at the center of the spacer grid. The intersecting straps may include a first set of mutually parallel straps including a first transition strap and a second set of mutually parallel straps including a second transition strap, with the second set intersecting the first set. The springs of the first set of mutually parallel straps face away from the first transition strap, and the springs of the second set of mutually parallel straps face away from the second transition strap. The outer straps in some embodiments include dimples but not springs.
摘要翻译： 间隔网格包括限定具有弹簧的细胞的相交带，并且布置成保持通过细胞的燃料棒的凹坑。 弹簧的方向在不在间隔栅格中心的隔离栅格中的开关点处切换。 相交带可以包括第一组相互平行的带，包括第一过渡带和包括第二过渡带的第二组相互平行的带，第二组与第一组相交。 第一组相互平行的带的弹簧面向远离第一过渡带，并且第二组相互平行的带的弹簧面向远离第二过渡带。 在一些实施例中，外带包括凹坑，但不包括弹簧。
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公开(公告)号：US4418462A
公开(公告)日：1983-12-06
申请号：US277553
申请日：1981-06-26
申请人： Lewis A. Walton
发明人： Lewis A. Walton
CPC分类号： G21C7/117 , G21C7/04 , G21C7/10 , G21Y2002/402 , G21Y2004/30 , Y02E30/39 , Y10T29/49821 , Y10T29/49822
摘要： A technique is provided for engaging and disengaging burnable poison rods from the spider in a fuel assembly. The cap on the end of each of the burnable poison rods is provided with a shank that is received in the respective bore formed in the spider. In one illustrative embodiment, the shank is deformed to firmly secure the rod and attached shank in the spider bore. Pressing the shank in the direction of the bore axis overcomes the deformation to release the particular rod from the spider.
摘要翻译： 提供了一种用于在燃料组件中从蜘蛛中接合和分离可燃毒物的技术。 每个可燃毒物杆的末端上的盖设置有一个柄，该柄被容纳在形成在蜘蛛中的相应孔中。 在一个说明性实施例中，柄变形以将杆和附接的柄牢固地固定在蜘蛛孔中。 沿轴孔方向按压柄杆克服了变形，以将特定的杆从蜘蛛上释放出来。
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公开(公告)号：US4304631A
公开(公告)日：1981-12-08
申请号：US53862
申请日：1979-07-02
申请人： Lewis A. Walton , Raymond A. King
发明人： Lewis A. Walton , Raymond A. King
摘要： A retainer to provide supplemental holddown force for a control component assembly latched into a fuel assembly of a nuclear reactor. Upon failure of latching mechanism the retainer precludes the ejection of the control component assembly from the fuel assembly by the upward coolant flow drage force. The spring loaded retainer is mounted at the top of the control component assembly and engages both the control component assembly and the core grid plate to form a structural blocking of the grid plate hole thereby precluding the ejection of the control component assembly therethrough.
摘要翻译： 用于为锁定在核反应堆的燃料组件中的控制部件组件提供补充压紧力的保持器。 当闩锁机构失效时，保持器阻止控制部件组件从向上的冷却剂流动力作用力从燃料组件的弹出。 弹簧加载的保持器安装在控制部件组件的顶部并且与控制部件组件和芯格栅板两者接合以形成格栅孔的结构阻塞，从而防止控制部件组件从其中的喷射。
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