公开(公告)号：US5748695A

公开(公告)日：1998-05-05

申请号：US551769

申请日：1995-11-07

申请人： Thomas G. Dunlap ,  Robert B. Elkins ,  Mark J. Colby

发明人： Thomas G. Dunlap ,  Robert B. Elkins ,  Mark J. Colby

IPC分类号： G21C3/30 ,  G21C3/33 ,  G21C3/322

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。

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。

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

IPC分类号： G21C3/33 ,  G21C1/08 ,  G21C3/30 ,  G21C3/32 ,  G21C1/04

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。

公开(公告)号：US5663993A

公开(公告)日：1997-09-02

申请号：US542345

申请日：1995-10-12

申请人： David W. Danielson ,  Robert B. Elkins ,  Thomas G. Dunlap

发明人： David W. Danielson ,  Robert B. Elkins ,  Thomas G. Dunlap

IPC分类号： G21C3/10 ,  G21C3/322 ,  G21C3/33 ,  G21C3/32

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。

公开(公告)号：US5610961A

公开(公告)日：1997-03-11

申请号：US567152

申请日：1995-12-05

申请人： Thomas G. Dunlap ,  Richard A. Proebstle ,  Robert B. Elkins ,  Christian D. Frederickson

发明人： Thomas G. Dunlap ,  Richard A. Proebstle ,  Robert B. Elkins ,  Christian D. Frederickson

IPC分类号： G21C3/14 ,  G21C3/324 ,  G21C3/33 ,  G21C3/334 ,  G21C19/33 ,  G21C3/322

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。

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。

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

IPC分类号： G21C3/33 ,  G21C1/08 ,  G21C3/30 ,  G21C3/32 ,  G21C1/04

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。

公开(公告)号：US5809101A

公开(公告)日：1998-09-15

申请号：US655875

申请日：1996-05-29

申请人： Thomas G. Dunlap ,  Gerald M. Latter ,  Mark J. Colby ,  Michael R. Stepp

发明人： Thomas G. Dunlap ,  Gerald M. Latter ,  Mark J. Colby ,  Michael R. Stepp

IPC分类号： G21C3/12 ,  G21C3/322 ,  G21C19/19 ,  G21C3/32

CPC分类号： G21C3/12 ,  G21C3/322 ,  Y02E30/38

摘要： A fuel bundle assembly for a nuclear reactor includes a modified channel and a handle unit that improves pressure drop performance. With the modified channel, one approach is to vary the outside dimension of the fuel channel along the length of the channel, but maintain a constant channel wall thickness. Another approach is to maintain the external dimensions of the fuel channel and vary the wall thickness along the length of the channel. The handle unit is formed including a handle member and a separate rod support member releasably engageable with the handle member. The handle member includes channels for receiving latch pin assemblies, coolant rods and a spacer assembly. The rod support member includes a plurality of fuel rod support chambers providing lateral support for the fuel rods of the fuel assembly. The rod support member also includes a main chamber that is sized to receive a portion of the handle member in a friction fit. In addition to providing improved pressure drop performance, the arrangement eliminates the need to realign the fuel rods in an upper tie plate or an upper spacer when access to the fuel rods is necessary. In addition, the handle unit serves to prevent failed end plugs from escaping the fuel bundle.

摘要翻译： 用于核反应堆的燃料束组件包括改进的通道和提高压降性能的手柄单元。 使用改进的通道，一种方法是沿通道的长度改变燃料通道的外部尺寸，但是保持恒定的通道壁厚度。 另一种方法是保持燃料通道的外部尺寸并沿着通道的长度改变壁厚度。 手柄单元形成为包括手柄构件和可释放地与手柄构件接合的单独的杆支撑构件。 手柄构件包括用于接收闩锁销组件，冷却剂棒和间隔件组件的通道。 杆支撑构件包括多个燃料棒支撑室，为燃料组件的燃料棒提供侧向支撑。 杆支撑构件还包括主室，其尺寸适于以摩擦配合接收手柄构件的一部分。 除了提供改进的降压性能之外，当需要进入燃料棒时，该布置消除了在上连接板或上隔板中重新对准燃料棒的需要。 此外，手柄单元用于防止失效的端塞从燃料束逸出。

公开(公告)号：US5787140A

公开(公告)日：1998-07-28

申请号：US654957

申请日：1996-05-29

申请人： Thomas G. Dunlap ,  Gerald M. Latter ,  Mark J. Colby ,  Michael R. Stepp

发明人： Thomas G. Dunlap ,  Gerald M. Latter ,  Mark J. Colby ,  Michael R. Stepp

IPC分类号： G21C3/324 ,  G21C3/334 ,  G21C3/32

CPC分类号： G21C3/334 ,  G21C3/324 ,  G21Y2002/201 ,  G21Y2002/301 ,  G21Y2002/303 ,  G21Y2004/302 ,  G21Y2004/305 ,  Y02E30/40

摘要： A fuel bundle assembly for a nuclear reactor includes a modified channel that improves pressure drop performance and a handle assembly that includes structure for preventing a broken end plug from escaping the fuel bundle. In modifying the channel, one approach is to vary the outside dimension of the fuel channel along the length of the channel, but maintain a constant channel wall thickness. Another approach is to maintain the external dimensions of the fuel channel and vary the wall thickness along the length of the channel. The handle assembly replaces the conventional upper tie plate and is provided with structure for preventing debris such as a broken fuel rod end plug from escaping the fuel bundle. The structure preferably includes a plurality of gridwork cross members forming a substantially square grid including gridwork windows that are sized smaller than the fuel rod end plugs.

摘要翻译： 用于核反应堆的燃料束组件包括改进压降性能的改进通道和包括防止破坏的端塞从燃料束逸出的结构的手柄组件。 在修改通道时，一种方法是沿着通道的长度改变燃料通道的外部尺寸，但是保持恒定的通道壁厚度。 另一种方法是保持燃料通道的外部尺寸并沿着通道的长度改变壁厚度。 手柄组件取代了常规的上连接板，并且设置有用于防止诸如破坏的燃料棒端塞的碎屑从燃料束逸出的结构。 该结构优选地包括多个格栅横向构件，其形成大致正方形的格栅，包括尺寸小于燃料棒端塞的格栅窗。

公开(公告)号：US5646973A

公开(公告)日：1997-07-08

申请号：US542254

申请日：1995-10-12

申请人： Richard A. Proebstle ,  Christian D. Frederickson ,  Thomas G. Dunlap ,  Edward A. Croteau

发明人： Richard A. Proebstle ,  Christian D. Frederickson ,  Thomas G. Dunlap ,  Edward A. Croteau

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

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。