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：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：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：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：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：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：US20080101751A1

公开(公告)日：2008-05-01

申请号：US11590382

申请日：2006-10-31

申请人： James P. Luther ,  Thomas Theuerkorn ,  Christopher Paul Lewallen ,  Hieu V. Tran ,  Terry Cooke ,  Tory A. Klavuhn ,  Robert B. Elkins

发明人： James P. Luther ,  Thomas Theuerkorn ,  Christopher Paul Lewallen ,  Hieu V. Tran ,  Terry Cooke ,  Tory A. Klavuhn ,  Robert B. Elkins

IPC分类号： G02B6/38

CPC分类号： G02B6/3885 ,  G02B6/3863

摘要： A multi-fiber fiber optic ferrule comprising a ferrule body, at least one optically functional optical fiber received within at least one optical fiber bore defined by the ferrule body, and at least one optically non-functional guard fiber received within at least one guard fiber bore defined by the ferrule body. A multi-fiber ferrule defining at least one optical fiber bore opening through a front face, at least one optically functional optical fiber received within the ferrule and maintained within the at least one optical fiber bore, at least one guard fiber bore opening through the front face, and at least one optically non-functional guard fiber received within the at least one guard fiber bore.

摘要翻译： 一种多纤维光纤套圈，包括套圈主体，容纳在由所述套圈主体限定的至少一个光纤孔内的至少一个光学功能光纤，以及容纳在至少一个保护光纤内的至少一个光学非功能保护光纤 孔由套管体限定。 一种多纤维套管，其限定穿过前表面开口的至少一个光纤孔，容纳在所述套圈内并保持在所述至少一个光纤孔内的至少一个光学功能光纤，至少一个保护纤维孔穿过所述前部 面和至少一个光学上非功能的保护纤维，其被容纳在所述至少一个防护纤维孔内。

公开(公告)号：US5727039A

公开(公告)日：1998-03-10

申请号：US616509

申请日：1996-03-19

申请人： John L. Harmon ,  Richard G. Patterson ,  Robert B. Elkins ,  Russell P. Higgins ,  Edward A. Croteau ,  Harold B. King ,  Christian D. Frederickson ,  Gerald M. Latter ,  Anthony P. Reese ,  David W. White

发明人： John L. Harmon ,  Richard G. Patterson ,  Robert B. Elkins ,  Russell P. Higgins ,  Edward A. Croteau ,  Harold B. King ,  Christian D. Frederickson ,  Gerald M. Latter ,  Anthony P. Reese ,  David W. White

IPC分类号： G21C3/32 ,  G21C3/332 ,  G21C3/34

CPC分类号： G21C3/332 ,  G21Y2002/302 ,  G21Y2002/304 ,  G21Y2004/301 ,  Y02E30/40

摘要： In a nuclear reactor fuel bundle assembly having a plurality of fuel rods and a non-round water rod extending between upper and lower tie plates, and having at least one fuel rod spacer located along the non-round water rod, an improvement which includes cooperating components on the fuel rod spacer and on the water rod for permitting movement of the spacer along the water rod to a desired axial location and for thereafter preventing further axial movement of the spacer in at least one of two opposite axial directions, the cooperating components including at least one spring on one of the spacer and the water rod.

摘要翻译： 在具有多个燃料棒和在上下连接板之间延伸的非圆形水杆的核反应堆燃料束组件中，并且具有沿着非圆形水棒定位的至少一个燃料棒间隔件，其包括配合 燃料棒间隔件和水杆上的部件，用于允许间隔件沿水杆移动到期望的轴向位置，并且此后防止间隔件在两个相对的轴向方向中的至少一个中的进一步的轴向运动，所述协作部件包括 在间隔件和水杆之一上的至少一个弹簧。

公开(公告)号：US5017332A

公开(公告)日：1991-05-21

申请号：US375646

申请日：1989-07-03

申请人： Gary E. Dix ,  Russell L. Crowther ,  Mark J. Colby ,  Bruce Matzner ,  Robert B. Elkins

发明人： Gary E. Dix ,  Russell L. Crowther ,  Mark J. Colby ,  Bruce Matzner ,  Robert B. Elkins

IPC分类号： G21C3/30 ,  G21C3/322 ,  G21C3/328

CPC分类号： G21C3/322 ,  G21C3/328 ,  G21Y2002/201 ,  G21Y2002/207 ,  G21Y2004/30 ,  G21Y2004/302 ,  Y02E30/31 ,  Y02E30/38

摘要： In a boiling water reactor having discrete bundles of fuel rods confined within channel enclosed fuel assemblies, an improved fuel design of bundles of fuel rods interior of the channels is disclosed. Specifically, partial length rods are utilized which extend from the bottom of the channel only part way to the top of the channel. These partial length rods are shortened with respect to the remaining rods and are symmetrically distributed throughout the fuel bundle with the preferred disposition being in the second row of the bundle of fuel rods from the channel wall. The symmetrical distribution of the partial length rods is at spaced apart locations one from another. The partial length rods extend from the bottom of the fuel bundle and terminate within the boiling region. during shutdown of the reactor, an improved cold shutdown margin is produced at the top of the fuel assembly due to the improved moderator-to-fuel ratio and reduction in plutonium formation at the upper portion of the bundle. Shutdown control rod worth is improved due to greater moderator-to-fuel ratio and a longer thermal neutron diffusion length. During power reator operation, the partial length fuel rods improve flow distribution above the ends of the partial length rods by channeling steam in the open interstitial area between rods above the ends of the partial length rods. This enables a high slip ratio of steam with respect to water and increases the density of the moderating water about the remaining rods in the upper region of the bundle at power operation. The total pressure drop is reduced, permitting more fuel rods in the design or a larger fuel rod diameter. The ratio of two-phase pressure drop to single phase pressure drop also is reduced, tending to increase the threshold for thermal hydraulic instability or coupled nucler-thermal-hydraulic instability. Rod spacers and bundle tie plates are provided with larger apertures overlying the partial length rods for further channeling of the steam and reduction of two-phase pressure drop. Most importantly and during full reactor power output, the pressure drop in the two-phase region of the bundle is reduced without substantial corresponding degradation of the fuel assemblies thermal limits. These features permit designs with larger fuel rod diameter than are possible without part length rods and results in a net increase in fuel assembly uranium weight with the larger fuel rod diameter more than compensating for the weight removed by shortening some of the fuel rods.