公开(公告)号：US20190198183A1

公开(公告)日：2019-06-27

申请号：US16330496

申请日：2017-02-20

申请人： WESTINGHOUSE ELECTRIC SWEDEN AB

发明人： Håkan Söderberg ,  Sven Pettersson ,  Anders Söderlund

IPC分类号： G21C3/32 ,  G21C19/307

CPC分类号： G21C3/3206 ,  G21C3/3305 ,  G21C19/307 ,  Y02E30/40

摘要： A fuel assembly for a nuclear water reactor having an upstream end, a downstream end, and a flow interspace between the upstream and downstream ends. Fuel rods are provided in the flow interspace between the upstream and downstream ends. The flow interspace permits a flow of coolant through the fuel assembly along a flow direction from the upstream end to the downstream end. A filter device is provided to catch debris particles in the flow of coolant. The filter device has a first filter zone for a major part of the flow of coolant, and a second filter zone for a minor part of the flow of coolant. The first filter zone has a first filtering efficiency and the second filter zone has a second filtering efficiency. The second filtering efficiency is higher than the first filtering efficiency.

公开(公告)号：US20180268949A1

公开(公告)日：2018-09-20

申请号：US15923491

申请日：2018-03-16

申请人： Westinghouse Electric Company LLC

发明人： ARTEM ALESHIN ,  DAVID S. HUEGEL ,  WILLIAM CLEARY

IPC分类号： G21C3/32 ,  G21C19/307

CPC分类号： G21C3/3206 ,  G21C3/3305 ,  G21C19/307 ,  Y02E30/40

摘要： A base portion for use in a bottom nozzle of a fuel assembly in a nuclear reactor includes a top surface, a bottom surface, and a plurality of vertical wall portions arranged in a generally squared grid-like pattern which extend between the bottom surface and the top surface and which define a plurality of non-circular passages passing between the bottom surface and the top surface through the base portion.

公开(公告)号：US20170352438A1

公开(公告)日：2017-12-07

申请号：US14243954

申请日：2014-04-03

申请人： Westinghouse Electric Company LLC

发明人： Kirkland D. Broach ,  Michael L. Lewis ,  Mark W. Peterson ,  David S. Huegel ,  Peyton M. Frick

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

CPC分类号： G21C3/3305 ,  G21C3/322 ,  Y02E30/40

摘要： A nuclear fuel assembly having a bottom nozzle with protrusions that extend from the upstream (lower or fluid entry) and downstream (upper or fluid exit) side of a horizontally supported perforated flow plate. The protrusions have a funnel-like shape that gradually decreases the lateral flow area on the upstream side of the perforated flow plate and gradually increases the lateral flow area on the downstream side of the perforated plate. The protrusions on the downstream side are preferably recessed to accommodate the ends of the fuel rods.

公开(公告)号：US09159460B2

公开(公告)日：2015-10-13

申请号：US13241809

申请日：2011-09-23

申请人： Russell P. Higgins

发明人： Russell P. Higgins

IPC分类号： G21C19/28 ,  G21C3/30 ,  G21C3/33 ,  G21C3/332 ,  G21C3/334

CPC分类号： G21C3/30 ,  G21C3/3305 ,  G21C3/331 ,  G21C3/332 ,  G21C3/334 ,  Y02E30/40 ,  Y10T24/44932 ,  Y10T29/49826

摘要： A fuel assembly may include a channel nosepiece; a lower tie plate positioned above the channel nosepiece; and at least one bundle retention clip connected to the channel nosepiece and the lower tie plate and configured to resist movement of the lower tie plate away from the channel nosepiece.

摘要翻译： 燃料组件可以包括通道喷嘴; 位于通道喷嘴上方的下连接板; 以及至少一个束保持夹，其连接到通道鼻梁和下连接板，并且构造成抵抗下连接板远离通道鼻梁的运动。

公开(公告)号：US20150098546A1

公开(公告)日：2015-04-09

申请号：US14046012

申请日：2013-10-04

申请人： WESTINGHOUSE ELECTRIC COMPANY LLC

发明人： PENG XU ,  Edward J. Lahoda

IPC分类号： G21C3/34 ,  B28B11/24 ,  B28B1/00 ,  B28B3/00 ,  B23K1/00 ,  B23K31/02

CPC分类号： G21C3/34 ,  G21C3/32 ,  G21C3/3305 ,  G21C21/00 ,  Y02E30/40

摘要： The invention pertains to a nuclear fuel assembly grid or a portion or a part of the grid, such as a grid strap and/or an integral flow mixer that is at least partially constructed of a composition containing one or more ternary compounds of the general formula I: Mn+1AXn  (I) wherein, M is a transition metal, A is an element selected from the group A elements in the Chemical Periodic Table, X is carbon or nitrogen, and n is an integer from 1 to 3. The invention further pertains to a method of making the nuclear fuel assembly grid or a portion of a part of the grid, by employing a sintering process to sinter the composition containing one or more ternary compounds in powder form such that the resulting grid or a portion of or a part of the grid includes a plurality of sintered layers

摘要翻译： 本发明涉及核燃料组件网格或网格的一部分或部分，例如网格带和/或整体式流动混合器，其至少部分地由含有一种或多种通式的三元化合物的组合物构成 I：Mn + 1AXn（I）其中，M是过渡金属，A是选自化学周期表中的A族元素的元素，X是碳或氮，n是1至3的整数。本发明 进一步涉及通过采用烧结方法来烧结含有一种或多种粉末形式的三元化合物的组合物来制造核燃料组合栅格或栅格的一部分的方法，使得所得到的栅格或一部分或 栅格的一部分包括多个烧结层

公开(公告)号：US20140241486A1

公开(公告)日：2014-08-28

申请号：US13777213

申请日：2013-02-26

申请人： BABCOCK & WILCOX MPOWER, INC.

发明人： Miroslav Dujin

IPC分类号： G21C3/33

CPC分类号： G21C3/3305 ,  G21C3/3315 ,  Y02E30/40

摘要： A fuel assembly includes a plurality of fuel rods arranged in parallel and including fissile material, a plurality of guide tubes arranged in parallel with and interspersed amongst the fuel rods, an upper end fitting connected with upper ends of the guide tubes, and a lower end fitting connected with lower ends of the guide tubes. Each fuel rod includes a top end and a bottom end wherein the top end extends into the upper end fitting and/or the bottom end extends into the lower end fitting.

摘要翻译： 燃料组件包括平行布置并包括易裂变材料的多个燃料棒，与燃料棒平行布置并分散在其中的多个引导管，与引导管的上端连接的上端配件，以及下端 配件与导管的下端连接。 每个燃料棒包括顶端和底端，其中顶端延伸进入上端配件和/或底端延伸到下端配件中。

公开(公告)号：US20130272481A1

公开(公告)日：2013-10-17

申请号：US13447655

申请日：2012-04-16

申请人： Julius M. Ullmann ,  Lewis A. Walton ,  Mary W. Johnson

发明人： Julius M. Ullmann ,  Lewis A. Walton ,  Mary W. Johnson

IPC分类号： G21C3/356 ,  G21C3/334

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。

公开(公告)号：US20130248434A1

公开(公告)日：2013-09-26

申请号：US13991315

申请日：2011-11-25

申请人： Masao Owaki ,  Tomomi Kawano ,  Yuichiro Kubo ,  Yoshitaka Mizutani ,  Tetsuhiro Ozaki

发明人： Masao Owaki ,  Tomomi Kawano ,  Yuichiro Kubo ,  Yoshitaka Mizutani ,  Tetsuhiro Ozaki

IPC分类号： B01D29/01

CPC分类号： B01D29/01 ,  B01D29/03 ,  G21C3/3206 ,  G21C3/322 ,  G21C3/3305 ,  G21C19/307 ,  Y02E30/38

摘要： Disclosed is a debris filter capable of reducing a pressure loss of coolant as it flows and capturing debris in the coolant. The debris filter includes bent plates, first plates, and second plates, all having respective same shapes, wherein each of the bent plates is composed of a first inclined strip-like plate and a second inclined strip-like plate. The bent plates are arranged parallel with each other, the bent plates and the first plates are fixed with each other so that the first plates intersect each first inclined plate, the bent plates and the second plates are fixed with each other so that the second plates intersect each second inclined plate, and the first plates does not touch the second plates.

摘要翻译： 公开了一种碎屑过滤器，其能够降低冷却剂流动时的压力损失并捕获冷却剂中的碎屑。 碎屑过滤器包括弯曲板，第一板和第二板，全部具有相同的形状，其中每个弯曲板由第一倾斜带状板和第二倾斜带状板组成。 弯曲板彼此平行地布置，弯曲板和第一板彼此固定，使得第一板与每个第一倾斜板相交，弯曲板和第二板彼此固定，使得第二板 每个第二倾斜板相交，并且第一板不接触第二板。

公开(公告)号：US20120087455A1

公开(公告)日：2012-04-12

申请号：US12930150

申请日：2010-12-28

申请人： Roderick A. Hyde ,  Muriel Y. Ishikawa ,  Jon D. McWhirter ,  Ashok Odedra ,  Joshua C. Walter ,  Kevan D. Weaver ,  Lowell L. Wood, JR.

发明人： Roderick A. Hyde ,  Muriel Y. Ishikawa ,  Jon D. McWhirter ,  Ashok Odedra ,  Joshua C. Walter ,  Kevan D. Weaver ,  Lowell L. Wood, JR.

IPC分类号： G21C7/32

CPC分类号： G21C15/247 ,  G05D7/0629 ,  G21C1/026 ,  G21C3/3305 ,  G21C5/02 ,  G21C17/025 ,  G21D3/00 ,  Y02E30/34 ,  Y02E30/39

摘要： Disclosed embodiments include electromagnetic flow regulators for regulating flow of an electrically conductive fluid, systems for regulating flow of an electrically conductive fluid, methods of regulating flow of an electrically conductive fluid, nuclear fission reactors, systems for regulating flow of an electrically conductive reactor coolant, and methods of regulating flow of an electrically conductive reactor coolant in a nuclear fission reactor.

公开(公告)号：US20110182396A1

公开(公告)日：2011-07-28

申请号：US12749470

申请日：2010-03-29

申请人： NAM GYU PARK ,  Gi-Jun Gwon ,  Kyeong Lak Jeon ,  Jung Min Suh ,  Jin Seok Lee ,  Kyong Bo Eom ,  Joon Kyoo Park ,  Jin Sun Kim ,  Dong Geun Ha ,  Kyoung Joo Kim

发明人： NAM GYU PARK ,  Gi-Jun Gwon ,  Kyeong Lak Jeon ,  Jung Min Suh ,  Jin Seok Lee ,  Kyong Bo Eom ,  Joon Kyoo Park ,  Jin Sun Kim ,  Dong Geun Ha ,  Kyoung Joo Kim

IPC分类号： G21C3/32

CPC分类号： G21C3/32 ,  G21C3/3305 ,  Y02E30/40

摘要： A guide thimble plug for a nuclear fuel assembly is provided, in which an internal threaded hole is formed through a main body so that the main body is coupled to a bottom nozzle by a screw coupling. An upper insert part is formed in the upper end of the main body. The upper insert part is inserted into a shock absorption tube. A thermal deformation prevention part is formed on the main body below the upper insert part and is recessed inward from the outer surface of the main body such that, when the main body is coupled to the guide thimble, a gap is defined between the thermal deformation prevention part and the guide thimble. The guide thimble and the shock absorption tube can be reliably fastened to the bottom nozzle, and thermal deformation of the guide thimble can be minimized.

摘要翻译： 提供了一种用于核燃料组件的导向套筒塞，其中内螺纹孔通过主体形成，使得主体通过螺纹联接件联接到底部喷嘴。 上部插入部分形成在主体的上端。 将上部插入部分插入减震管中。 一个热变形防止部分形成在主体下面的上插入部分上，并且从主体的外表面向内凹入，使得当主体联接到导向套管时，在热变形 预防部分和导向套管。 引导套管和减震管可以可靠地固定到底部喷嘴，并且导引套管的热变形可以最小化。