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公开(公告)号：US10902957B2
公开(公告)日：2021-01-26
申请号：US16029107
申请日：2018-07-06
发明人： Victor Blanc , Thierry Beck
摘要： An assembly to be inserted into a nuclear reactor, such as a liquid sodium-cooled fast neutron reactor, includes an assembly hollow body of elongate shape along a longitudinal axis X. The wall of the hollow body includes at least one through-opening. The assembly also includes an assembly element inserted into the hollow body. The assembly element includes at least one flexible blade of which the free end is shaped into a clip-fastening hook collaborating in clip-fastening fashion with the through-opening from inside the hollow body, so as to connect the assembly element to the hollow body. The assembly also includes at least one removable structure for locking the flexible blade clip-fastened into the through-opening. The removable locking structure makes it possible to prevent the flexible blade from flexing and thus the removable locking structure makes it possible to lock a connection between the assembly element and the hollow body.
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公开(公告)号：US10658086B2
公开(公告)日：2020-05-19
申请号：US15069302
申请日：2016-03-14
发明人： Jason B. Ingraham , Gerald Dean Kvaall, Jr. , Paul E. Cantonwine , Michael W. Thomas , William C. Cline
摘要： Fuel assemblies include an outer channel having a physical configuration optimized for a position of the fuel assembly within a core of a nuclear reactor. The position of the fuel assembly with respect to an employed control blade in the nuclear reactor determines if the outer channel may be thickened, reinforced, and/or fabricated of Zircaloy-4 or similar distortion-resistant material, so as to reduce or prevent distortion of the channel against the control blade, or thinned so as to increase water volume and enhance reactivity in the assembly. Reactor cores having configured fuel assemblies include fuel assemblies having different outer channels. Methods include determining operational characteristics of the fuel assembly, including likelihood of being placed directly adjacent to an employed control blade, and physically selecting or modifying the outer channel of the fuel assembly based thereon.
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公开(公告)号：US20180047466A1
公开(公告)日：2018-02-15
申请号：US15555832
申请日：2015-03-13
发明人： Anders Söderlund , Markus Månsson
摘要： A method of making a fuel channel for a fuel assembly for a nuclear power boiling water reactor includes providing at least one first sheet of a Zr-based material of a first thickness, providing at least one second sheet of a Zr-based material of a second thickness, which is less than said first thickness, assembling at least said at least one first sheet and said at least one second sheet, such that a fuel channel is formed and such that said at least one first sheet forms a lower part of the fuel channel and such that said at least one second sheet forms a higher part of the fuel channel and such that said lower part is joined with said higher part, wherein said lower part constitutes 20-75% of the length of the fuel channel. The invention also concerns a fuel channel and a fuel assembly.
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4.发明授权公开(公告)号：US09336909B2
公开(公告)日：2016-05-10
申请号：US14548630
申请日：2014-11-20
发明人： Jason P. Mazzoccoli , Edward J. Lahoda , Peng Xu
IPC分类号： G21C3/07 , G21C3/324 , G21C21/02 , C23C24/04 , C23C28/00 , C23C4/10 , C23C4/06 , C23C4/02 , C23C4/12 , C23C4/00
CPC分类号： G21C21/02 , C23C4/00 , C23C4/02 , C23C4/06 , C23C4/10 , C23C4/12 , C23C4/129 , C23C24/04 , C23C28/321 , C23C28/324 , G21C3/07 , G21C3/324 , G21Y2002/103 , G21Y2004/10 , Y02E30/40
摘要： A zirconium alloy nuclear reactor cylindrical cladding has an inner Zr substrate surface (10), an outer volume of protective material (22) consisting of Zr—Al, and an integrated middle volume (20) of zirconium oxide, zirconium and protective material, where the protective material is applied by impaction at a velocity greater than 340 meters/second to provide the integrated middle volume (20) resulting in structural integrity for the cladding.
摘要翻译： 锆合金核反应堆圆柱形包层具有内部Zr衬底表面（10），由Zr-Al组成的外部体积保护材料（22）和一体化中间体积（20）的氧化锆，锆和保护材料，其中 通过以大于340米/秒的速度的冲击施加保护材料以提供集成的中间体积（20），从而导致包层的结构完整性。
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公开(公告)号：US20120014496A1
公开(公告)日：2012-01-19
申请号：US13257353
申请日：2010-03-03
IPC分类号： G21C3/324
摘要： A fuel assembly for a nuclear boiling water reactor is provided. The reactor comprises a plurality of such fuel assemblies and a plurality of control rods. Each control rod is insertable between the fuel assemblies. The fuel assembly has a longitudinal center axis and includes a plurality of elongated fuel rods and an elongated channel box. The channel box has inner sides, facing the fuel rods, and outer sides. Each inner and outer side has a longitudinal center line extending in parallel with the center axis and along the length of the channel box. A number of protrusions are distributed along the center line of at least two of the outer sides. The protrusions are configured to ensure a minimum distance between the outer side and an adjacent control rod and to enable the control rod to easily slide over and on top of the protrusions.
摘要翻译： 提供了一种用于核沸水反应堆的燃料组件。 反应器包括多个这样的燃料组件和多个控制棒。 每个控制杆可插入在燃料组件之间。 燃料组件具有纵向中心轴线并且包括多个细长的燃料棒和细长的通道箱。 通道箱具有内侧，面向燃料棒和外侧。 每个内侧和外侧具有与中心轴平行且沿着通道箱的长度延伸的纵向中心线。 多个突起沿着至少两个外侧的中心线分布。 突起被配置为确保外侧和相邻控制杆之间的最小距离，并且使得控制杆能够容易地在突起上方滑动。
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6.发明授权Nuclear reactor core flooding by control of shroud leakage and fuel channel spillover 失效控制核泄漏和燃料通道溢出的核反应堆堆芯淹没
公开(公告)号：US5875222A
公开(公告)日：1999-02-23
申请号：US613665
申请日：1996-03-11
申请人： Jeffrey L. Thompson
发明人： Jeffrey L. Thompson
CPC分类号： G21C15/18 , G21C3/324 , G21Y2002/207 , G21Y2004/302 , Y02E30/40
摘要： The bypass opening of the tie plate of a fuel assembly of a nuclear reactor is provided with a flow restricting or check valve such that flow during normal operation upwardly through the tie plate and bypass opening is maintained. In the event of a loss of coolant accident, and degradation of a core spray sparger system, backflow leakage through the tie plate is minimized or eliminated by the valves, enabling the core spray sparger system to flood the core about the fuel assemblies and provide spillover coolant into the open top ends of the fuel assemblies. Additionally, because the fuel assemblies change in length over time, a uniform coolant flow distribution into the fuel assemblies upon loss of coolant accident is achieved by providing metering holes through the channels whereby each channel receives substantially the same flow of coolant from the flooded core.
摘要翻译： 核反应堆的燃料组件的连接板的旁路开口设置有流量限制或止回阀，使得维持正常操作期间向上通过连接板和旁路开口的流量。 在冷却剂事故损失和核心喷雾式喷射器系统的劣化的情况下，通过阀门最小化或消除通过连接板的回流泄漏，使得核心喷雾分布器系统能够在核燃料组件周围溢出核心并提供溢出 冷却剂进入燃料组件的敞开的顶端。 另外，由于燃料组件的长度随时间变化，通过在通道中提供计量孔来实现在冷却剂事故损失时向燃料组件中均匀的冷却剂流分配，由此每个通道从淹没的芯部接收基本相同的冷却剂流。
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公开(公告)号：US5805656A
公开(公告)日：1998-09-08
申请号：US629209
申请日：1996-04-08
申请人： Ronald B. Adamson
发明人： Ronald B. Adamson
CPC分类号： G21C3/324 , G21Y2002/103 , Y02E30/40
摘要： A composite zirconium alloy component that exhibits a reduced propensity for irradiation growth and enhanced corrosion resistance when in a radiation field. The component is formed to have an inner core and two oppositely-disposed outer layers that are metallurgically bonded to the inner core. The inner core and the outer layers are formed from two different zirconium alloys, with the inner core alloy contributing to the ability of the component to resist dimensional distortions as a result of irradiation growth, while the outer layer alloy contributes to the ability of the component to resist corrosion. As such, the alloys are combined within the component in a manner that exploits the different corrosion and irradiation-resistance properties of the alloys.
摘要翻译： 复合锆合金组分，其在辐射场中表现出降低的照射生长倾向和增强的耐腐蚀性。 该部件形成为具有内核和两个相对设置的外层，其被冶金结合到内芯。 内芯和外层由两种不同的锆合金形成，内芯合金有助于组件抵抗作为辐射生长的结果的尺寸变形的能力，而外层合金有助于组件的能力 抵抗腐蚀。 因此，合金以组合物的方式组合，以利用合金的不同腐蚀和耐辐射性能。
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公开(公告)号：US5787140A
公开(公告)日：1998-07-28
申请号：US654957
申请日：1996-05-29
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。
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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：US5309491A
公开(公告)日：1994-05-03
申请号：US33590
申请日：1993-03-18
申请人： Hans-Joachim Lippert , Werner Meier
发明人： Hans-Joachim Lippert , Werner Meier
摘要： In a fuel assembly, lower end pieces of fuel rods, guide tubes and coolant pipes, etc., are inserted and/or screwed into a base plate and secured against lifting by a bolt. In the case of fuel rods, in particular fuel rods which do not extend over the entire length of normal rods, the bolt is screwed onto connecting parts in such a way that a releasable bayonet closure is produced. In the case of coolant pipes of boiling water reactors, there is provided in particular a screw connection which is irreleasably secured against torsion by the bolt.
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