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公开(公告)号：US5384814A
公开(公告)日：1995-01-24
申请号：US44687
申请日：1993-04-12
申请人： Bruce Matzner , Eric B. Johansson , Richard A. Wolters, Jr. , Thomas G. Dunlap , Robert B. Elkins , Harold B. King , Paul W. Sick
发明人： Bruce Matzner , Eric B. Johansson , Richard A. Wolters, Jr. , Thomas G. Dunlap , Robert B. Elkins , Harold B. King , Paul W. Sick
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.
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。
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2.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：US4675154A
公开(公告)日：1987-06-23
申请号：US811726
申请日：1985-12-20
摘要： In a nuclear reactor fuel assembly, a relatively flexible mounting member for mounting a large coolant conducting tube to the lower tie plate whereby excessive side forces on the fuel rod spacers are avoided in the event of lateral displacement of the fuel assembly such as during a seismic event.
摘要翻译： 在核反应堆燃料组件中，相对柔性的安装构件用于将大的冷却剂导管连接到下连接板上，由此在燃料组件的横向位移（例如在地震期间）中避免了燃料棒间隔件上的过大的侧向力 事件。
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4.发明授权Control rod for a nuclear reactor having mounting structures for replacing/rearranging/inverting absorber tubes 失效用于具有用于更换/重新排列/反转吸收管的安装结构的核反应堆的控制杆
公开(公告)号：US5883931A
公开(公告)日：1999-03-16
申请号：US982023
申请日：1997-12-01
申请人： James E. Holden , Gary S. Martin , Robert B. Elkins , Dennis D. Kessen , Locksley V. Hampton , Ararat Pogosian , Michael J. Sullivan , Thomas G. Dunlap , Richard E. Kingston
发明人： James E. Holden , Gary S. Martin , Robert B. Elkins , Dennis D. Kessen , Locksley V. Hampton , Ararat Pogosian , Michael J. Sullivan , Thomas G. Dunlap , Richard E. Kingston
IPC分类号： G21C7/113
CPC分类号： G21C7/113 , G21Y2002/303 , G21Y2002/304 , G21Y2004/30 , Y02E30/39
摘要： A control rod includes four panels in cruciform section each containing a plurality of absorber tubes. The absorber tubes are mounted between upper and lower mounting structures having generally T-shaped slots opening toward one another. The absorber tubes have generally T-shaped end plugs for reception in the slots. The slots and end plugs are configured to permit limited axial movement of each absorber tube relative to the control rod and to adjacent tubes. The absorber tubes are maintained in tension during all nuclear operations including during a scram.
摘要翻译： 一个控制杆包括四个面板，十字形部分包含多个吸收管。 吸收管安装在上和下安装结构之间，其中大致T形槽彼此开口。 吸收管通常具有用于在槽中接收的T形端塞。 狭槽和端塞被构造成允许每个吸收管相对于控制杆和邻近的管有限的轴向运动。 吸收管在所有核操作期间保持紧张，包括在一次冲击期间。
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公开(公告)号：US5663993A
公开(公告)日：1997-09-02
申请号：US542345
申请日：1995-10-12
CPC分类号： G21C3/322 , G21Y2002/204 , G21Y2004/302 , G21Y2004/403 , Y02E30/38
摘要： In a nuclear fuel rod assembly including a plurality of fuel rods and at least one water rod held together in a bundle, and wherein end plugs at the lower ends of the fuel rods and the at least one water rod engage a lower tie plate, an improvement wherein the end plug at the lower end of the at least one water rod is hollow and includes a multi-diameter flow metering bore for regulating coolant flow into the water rod.
摘要翻译： 在一个核燃料棒组件中，包括多个燃料棒和至少一个以棒束为一体的水杆，并且其中燃料棒的下端和至少一个水杆的端塞接合下连接板， 改进之处在于，至少一个水杆的下端处的端塞是中空的，并且包括用于调节进入水杆的冷却剂流的多直径流量计量孔。
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6.发明授权Fuel assembly structure selectively using channel and coolant rod for load support and method 失效燃料组件结构选择性地使用通道和冷却剂棒进行负载支持和方法
公开(公告)号：US5748695A
公开(公告)日：1998-05-05
申请号：US551769
申请日：1995-11-07
CPC分类号： G21C3/3315 , G21C3/331 , G21Y2002/304 , G21Y2002/402 , G21Y2004/30 , Y02E30/40
摘要： A latch pin assembly is configured to enable selective engagement with at least one of the fuel assembly channel and the coolant rod such that the fuel assembly channel and the coolant rod can be selectively utilized to support the fuel assembly load, thereby eliminating the need for fuel tie rods. The latch pin assembly includes a latch pin selectively engageable with the fuel assembly channel and the coolant rod, and an anchoring assembly cooperating with the latch pin, wherein the anchoring assembly anchors the latch pin in a selected position such that the latch pin engages at least one of the fuel assembly channel and the coolant rod. The latch pin may be alternatively engageable with the fuel assembly channel and the coolant rod or simultaneously engageable with the fuel assembly channel and the coolant rod. With this arrangement, the bail handle can be used both to remove the entire assembly including the fuel assembly channel from the reactor vessel or to remove only the fuel bundle from the reactor vessel, leaving the fuel assembly channel in place.
摘要翻译： 闩锁销组件被构造成使得能够与燃料组件通道和冷却剂棒中的至少一个选择性地接合，使得可以选择性地利用燃料组件通道和冷却剂棒来支撑燃料组件负载，从而消除对燃料的需要 拉杆。 闩锁销组件包括可选择地与燃料组件通道和冷却剂杆接合的闩锁销以及与闩锁销配合的锚固组件，其中锚定组件将闩锁销锚定在选定位置，使得闩锁销至少接合 燃料组件通道和冷却剂棒之一。 闩锁销可以可选地与燃料组件通道和冷却剂杆接合，或者可以与燃料组件通道和冷却剂棒同时接合。 通过这种布置，吊环把手可用于从反应堆容器中移除包括燃料组件通道的整个组件，或仅从反应堆容器移除燃料束，使燃料组件通道保持在适当位置。
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公开(公告)号：US5610961A
公开(公告)日：1997-03-11
申请号：US567152
申请日：1995-12-05
CPC分类号： G21C3/14 , G21C3/324 , 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, a conventional upper tie plate is removed and a handle assembly is provided that 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. If it is desired to remove the fuel bundle from the channel, the handle assembly is released from the assembly by releasing the 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，移除了传统的上连接板，并且提供了一个手柄组件，其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。 如果需要从通道中移除燃料束，则通过释放闩锁销将手柄组件从组件中释放。 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。
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公开(公告)号：US5627866A
公开(公告)日：1997-05-06
申请号：US542382
申请日：1995-10-12
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。
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公开(公告)号：US5608768A
公开(公告)日：1997-03-04
申请号：US373373
申请日：1995-01-17
CPC分类号： G21C3/3305 , G21C3/10 , G21Y2002/103 , G21Y2004/10 , G21Y2004/304 , Y02E30/40
摘要： In a fuel bundle assembly for a nuclear reactor wherein a plurality of fuel rods and tie rods extend between upper and lower tie plates and wherein some of the fuel rods are partial length fuel rods extending between the lower tie plate and a spacer located between the upper and lower tie plates, an improved end plug is provided for at least each of the partial length fuel rods, each end plug secured between a respective partial length fuel rod and the lower tie plate. The end plug includes an upper portion constructed of a first alloy material and including an exterior fuel rod receiving surface and a tapped hole in a lower end thereof, and a lower portion constructed of a second alloy material and including upper and lower threaded sections, the upper threaded section receivable within the tapped hole and the lower threaded section receivable within a tapped hole in the lower tie plate. The threaded end plug may be used with full length fuel rods as well as bundle tie rods. A related method of removing the fuel rod with the improved end plug from the lower tie plate is also disclosed.
摘要翻译： 在用于核反应堆的燃料束组件中，其中多个燃料棒和拉杆在上部和下部连接板之间延伸，并且其中一些燃料棒是部分长度的燃料棒，其在下部连接板和位于上部 和下连接板，为至少每个部分长度燃料棒提供改进的端塞，每个端塞固定在相应的部分长度燃料棒和下连接板之间。 端塞包括由第一合金材料构成的上部，并且在其下端包括外部燃料棒接收表面和螺纹孔，以及由第二合金材料构成并包括上部和下部螺纹部分的下部， 上螺纹部分可接收在螺纹孔内，下螺纹部分可接收在下连接板的螺纹孔内。 螺纹端塞可以与全长燃料棒以及束扎杆一起使用。 还公开了一种从下连接板移除具有改进的端塞的燃料棒的相关方法。
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公开(公告)号：US5646973A
公开(公告)日：1997-07-08
申请号：US542254
申请日：1995-10-12
CPC分类号： G21C3/3315 , G21C3/33 , G21Y2002/301 , G21Y2004/305 , Y02E30/40
摘要： A fuel bundle assembly for a nuclear reactor includes a lower tie plate; a transition piece underlying the lower tie plate; a plurality of fuel rods and at least one water rod seated on the lower tie plate and extending in substantially parallel relationship toward an upper end of the fuel bundle assembly, wherein a fuel bundle assembly lifting load is carried by load bearing members including certain of the fuel rods or by the at least one water rod; a plurality of spacers axially spaced along the at least one water rod and including means for laterally supporting each of the fuel rods; and a handle bar assembly at the upper end of the fuel bundle assembly connected to the load bearing members such that the plurality of non-load bearing fuel rods are supported only by the lower tie plate and the plurality of spacers.
摘要翻译： 用于核反应堆的燃料束组件包括下连接板; 下连接板下方的过渡件; 多个燃料棒和至少一个水杆，所述至少一个水杆位于所述下连接板上，并且以基本上平行的关系延伸到所述燃料束组件的上端，其中燃料束组件提升负载由承载构件承载，所述承载构件包括： 燃料棒或至少一个水棒; 沿着所述至少一个水杆轴向间隔开的多个间隔件，并且包括横向支撑每个所述燃料棒的装置; 以及在所述燃料束组件的上端处连接到所述承载构件的手柄杆组件，使得所述多个非承载式燃料棒仅由所述下连接板和所述多个间隔件支撑。
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