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1. 发明授权

US4642217A Fuel rod for a nuclear reactor having an improved end plug assembly 失效
标题翻译：用于具有改进的端塞组件的核反应堆的燃料棒
公开(公告)号：US4642217A
公开(公告)日：1987-02-10
申请号：US634728
申请日：1984-07-26
申请人： John F. Wilson , Robert K. Gjertsen , Samuel Cerni
发明人： John F. Wilson , Robert K. Gjertsen , Samuel Cerni
IPC分类号： G21C3/10
CPC分类号： G21C3/10 , G21Y2002/201 , G21Y2002/301 , G21Y2004/30 , Y02E30/40
摘要： A nuclear reactor fuel rod includes a fuel tube and an improved end plug assembly having a pair of hollow end plugs which seal opposite ends of the fuel tube. Each end plug has an outer body portion with an outside diameter substantially the same as the outside diameter of the fuel tube and an inner body portion of reduced diameter inserted into an end of the tube. Each plug has a cavity defined therein which increases the space within the rod for fission gas expansion. An outer region of the cavity within the outer body portion of the end plug is undercut relative to an inner region of the cavity within the inner body portion of the plug. One of the end plugs also has an insert fitted into its inner body portion which prevents fuel chips from falling into the cavity of the end plug. A slot is formed axially in a side wall of the insert which allows communication of gas from the tube into the cavity of the end plug.
摘要翻译：核反应堆燃料棒包括燃料管和改进的端塞组件，其具有密封燃料管的相对端的一对空心端塞。每个端塞具有外部主体部分，其外径基本上与燃料管的外径相同，并且直径减小的内部主体部分插入管的一端。每个塞子具有限定在其中的空腔，其增加了用于裂变气体膨胀的杆内的空间。在端塞的外主体部分内的空腔的外部区域相对于插塞的内部主体部分内的空腔的内部区域是底切的。端塞中的一个还具有嵌入其内部主体部分中的插入物，其防止燃料芯片落入端塞的空腔中。在插入件的侧壁中轴向地形成槽，其允许气体从管连接到端塞的空腔中。

2. 发明授权

US4603027A Removable top nozzle and tool for a nuclear reactor fuel assembly 失效
公开(公告)号：US4603027A
公开(公告)日：1986-07-29
申请号：US564058
申请日：1983-12-21
申请人： John F. Wilson , Samuel Cerni , Robert K. Gjertsen
发明人： John F. Wilson , Samuel Cerni , Robert K. Gjertsen
IPC分类号： G21C3/33 , G21C3/334 , G21C3/335 , G21C19/33 , G21C3/32
CPC分类号： G21C3/3315 , G21C3/331 , G21C3/334 , G21C3/33 , G21C3/335 , G21Y2002/302 , G21Y2002/401 , G21Y2004/30 , G21Y2004/40 , G21Y2004/501 , Y02E30/40 , Y10T403/3986
摘要： A top nozzle subassembly having a hold-down device incorporated therewithin is provided for a nuclear reactor fuel assembly. The subassembly is slidably mounted on the upper ends of the control rod guide thimbles and is removably attached by internally threaded collars which threadably mate with external threads provided on the upper ends of the guide thimbles. Unthreading of the collars allows the subassembly to be removed from the fuel assembly to gain top access to the fuel rods within the fuel assembly. The invention also includes a special tool for threading and unthreading of the collars.

3. 发明授权

US4687627A Water displacer rod with hollow annular support pellets having sealed internal voids 失效
标题翻译：具有中空环形支撑丸的水置换棒具有密封的内部空隙
公开(公告)号：US4687627A
公开(公告)日：1987-08-18
申请号：US670853
申请日：1984-11-13
申请人： John F. Wilson , Robert K. Gjertsen , Samuel Cerni
发明人： John F. Wilson , Robert K. Gjertsen , Samuel Cerni
IPC分类号： G21C3/16 , G21C7/27 , G21C7/10 , G21C5/00
CPC分类号： G21C3/16 , G21C7/27 , G21Y2002/303 , G21Y2004/30 , Y02E30/39
摘要： An improved water displacer rod includes an elongated hollow thin-walled tube with a pair of end plugs attached to opposite ends of the tube to hermetically seal the tube and a plurality of support pellets disposed in a stacked relationship within the tube. The pellets allow the thin-walled tube to be laterally flexible while still able to resist collapse due to high external pressure. Each pellet is preferably formed of a body having a hollow annular cross-sectional shape and a pair of end webs extends across and closing opposite ends of the body. The body defines a central void and the webs seal the void. Thus, when the pellets are stacked within the tube, each void is sealed individually one from the next. A double barrier is provided in the displacer rod by the hermetically sealed tube and the individually sealed pellets. Even if the tube should fail, moderator water will not flood the tube interior since the stacked pellets occupy and encapsulate substantially all of the empty space within the failed tube. As a result, the displacer rod containing the failed tube will still be able to perform its intended function.
摘要翻译：改进的水置换棒包括细长的中空薄壁管，其具有附接到管的相对端的一对端塞，以密封管和在管内以堆叠关系设置的多个支撑丸。颗粒允许薄壁管横向柔性，同时仍然能够抵抗由于高外部压力而崩溃。每个颗粒优选地由具有中空环形横截面形状的主体形成，并且一对端网沿着主体的相对端延伸并闭合。主体限定了一个中心空隙，并且该网密封了空隙。因此，当颗粒堆叠在管内时，每个空隙分别从下一个密封。通过密封管和单独密封的颗粒在置换杆中提供双重屏障。即使管子出现故障，调节剂水不会溢出管内部，因为堆积的颗粒占据并封装故障管中的所有空的空间。结果，包含故障管的置换棒仍然能够执行其预期的功能。

4. 发明授权

US4664878A Light water moderator filled rod for a nuclear reactor 失效
标题翻译：用于核反应堆的轻水慢化器填充杆
公开(公告)号：US4664878A
公开(公告)日：1987-05-12
申请号：US654709
申请日：1984-09-26
申请人： John F. Wilson , Pratap K. Doshi , Samuel Cerni
发明人： John F. Wilson , Pratap K. Doshi , Samuel Cerni
IPC分类号： G21C7/27 , G21C3/326 , G21C3/328 , G21C7/10 , G21C7/26 , G21C5/00
CPC分类号： G21C3/328 , G21C7/10 , G21C7/26 , G21Y2002/201 , G21Y2004/10 , G21Y2004/30 , G21Y2004/40 , Y02E30/38 , Y02E30/39
摘要： A non-boron moderator filled rod for a nuclear reactor fuel assembly has a tubular body with a pair of end plugs sealing the opposite ends thereof and defining a chamber within the body. A liquid moderator, such as light water, is contained witin the chamber. One of the end plugs acts as a hydride sink and a hydrogen getter sponge material is disposed adjacent the other end plug.
摘要翻译：用于核反应堆燃料组件的非硼慢化剂填充棒具有管状体，其具有密封其相对端并在体内限定腔室的一对端塞。室内容纳有液体调节剂，如淡水。一个端塞用作氢化物槽，并且氢吸气泡海绵材料邻近另一端塞设置。

5. 发明授权

US4684495A Fuel assembly bottom nozzle with integral debris trap 失效
标题翻译：燃油组件底部喷嘴与一体的碎屑陷阱
公开(公告)号：US4684495A
公开(公告)日：1987-08-04
申请号：US672041
申请日：1984-11-16
申请人： John F. Wilson , Robert K. Gjertsen , Samuel Cerni
发明人： John F. Wilson , Robert K. Gjertsen , Samuel Cerni
IPC分类号： G21C3/30 , G21C3/32 , G21C15/00 , G21C19/30
CPC分类号： G21C3/32 , G21C3/3206 , G21C3/3305 , Y02E30/40
摘要： An improved bottom nozzle of a fuel assembly includes a housing and a modified adapter plate formed by a network of ligaments which extend across the housing and are connected to the side walls of the housing a short distance below its upper peripheral edge so as to define an open region therein. The improved bottom nozzle also includes a debris trap having a structure disposed within the open region of the housing upon the adapter plate and adapted to capture and retain debris carried by collant flowing from openings in the lower core plate of the nuclear reactor to the fuel assembly. The trap structure is composed of a plurality of straps aligned with one another in a crisscross arrangement and defining a plurality of interconnected wall portions which form a multiplicity of small cells each having open opposite ends and a central channel for collant flow through the trap. A plurality of spring-like fingers are punched out of the wall portions and bent to extend into the cell channels toward the downstream end of the trap structure to provide means to capture and retain pieces of debris carried through the channels by flowing coolant. Also, leaf springs are attached to periphery of the structure and engagable with a plurality of recessed shoulders in the housing for releasably locking the trap structure in place in the open region with intersections formed by the straps aligned below the fuel rods of the fuel assembly.
摘要翻译：燃料组件的改进的底部喷嘴包括壳体和由穿过所述壳体延伸的韧带网形成的修改的适配器板，并且连接到所述壳体的侧壁，在其上部周边边缘下方短距离，以便限定开放区域。改进的底部喷嘴还包括碎屑捕集器，其具有设置在壳体的敞开区域内的结构在适配器板上的结构，并且适于捕获并保留从核反应堆的下芯板中的开口流入的燃料组件。捕获结构由多个以十字形布置的彼此对准的带组成，并且限定多个互连的壁部分，其形成多个小单元，每个小单元具有开放的相对端，以及一个中心通道，用于通过陷阱流动。多个弹簧状指状物被从壁部分冲出并弯曲以朝向陷阱结构的下游端延伸进入单元通道，以提供通过流动冷却剂来捕获并保持通过通道承载的碎片的装置。此外，板簧附接到结构的周边并且与壳体中的多个凹入的肩部接合，以将捕获结构可释放地锁定在开放区域中，其中由在燃料组件的燃料棒的下方对准的带形成的交叉。

6. 发明授权

US4687619A Removable top nozzle and tool for a nuclear reactor fuel assembly 失效
标题翻译：用于核反应堆燃料组件的可拆卸的顶部喷嘴和工具
公开(公告)号：US4687619A
公开(公告)日：1987-08-18
申请号：US783511
申请日：1985-10-03
申请人： John F. Wilson , Samuel Cerni , Robert K. Gjertsen
发明人： John F. Wilson , Samuel Cerni , Robert K. Gjertsen
IPC分类号： G21C3/33 , G21C3/334 , G21C3/335 , G21C19/33 , G21C19/20
CPC分类号： G21C3/3315 , G21C3/331 , G21C3/334 , G21C3/33 , G21C3/335 , G21Y2002/302 , G21Y2002/401 , G21Y2004/30 , G21Y2004/40 , G21Y2004/501 , Y02E30/40 , Y10T403/3986
摘要： A top nozzle subassembly having a hold-down device incorporated therewithin is provided for a nuclear reactor fuel assembly. The subassembly is slidably mounted on the upper ends of the control rod guide thimbles and is removably attached by internally threaded collars which threadably mate with external threads provided on the upper ends of the guide thimbles. Unthreading of the collars allows the subassembly to be removed from the fuel assembly to gain top access to the fuel rods within the fuel assembly. The invention also includes a special tool for threading and unthreading of the collars.
摘要翻译：提供了一种具有并入其中的压紧装置的顶部喷嘴子组件，用于核反应堆燃料组件。子组件可滑动地安装在控制杆导向套管的上端，并且通过与设置在导向套管的上端上的外螺纹螺纹配合的内螺纹套环可移除地附接。套环的拆卸允许从燃料组件移除子组件以获得燃料组件内的燃料棒的顶部通路。本发明还包括用于套圈和螺纹的螺纹的专用工具。

7. 发明授权

US4820058A Control rod end plug with a stabilizing configuration 失效
标题翻译：控制杆端塞具有稳定配置
公开(公告)号：US4820058A
公开(公告)日：1989-04-11
申请号：US634729
申请日：1984-07-26
申请人： John F. Wilson , Samuel Cerni , Robert K. Gjertsen
发明人： John F. Wilson , Samuel Cerni , Robert K. Gjertsen
IPC分类号： G21C7/117 , G21C7/14 , G21C7/10
CPC分类号： G21C7/117 , G21Y2002/101 , G21Y2004/30 , G21Y2004/302 , Y02E30/39
摘要： A nuclear reactor includes a plurality of upstanding guide thimbles and a plurality of control rods received in the guide thimbles and supported for movement relative to the thimbles between inserted and withdrawn positions. The control rods each include a tubular cladding member and an end plug attached to a lower end of the member. The improvement relates to the end plug having a stabilizing configuration which reduces lateral vibratory motion and contact between the control rod and its respective guide thimble. The end plug has an asymmetrical shape which places its terminal tip end in a position offset to one side of the central axis of the control rod and its end plug. As a result of interaction of the asymmetrical plug tip with coolant flowing along the control rod, a lateral steady-state force is imparted to the end plug which maintains the control rod end plug pressed against the wall of tis respective guide thimble. Several different asymmetrical configurations can be employed on the end plug.
摘要翻译：核反应堆包括多个直立引导套管和多个控制杆，其容纳在引导套管中并被支撑以相对于插入位置和撤回位置之间的套管移动。控制杆各自包括管状包覆部件和附接到部件的下端的端塞。该改进涉及具有稳定构造的端塞，其减小横向振动运动和控制杆与其相应导向套筒之间的接触。端塞具有不对称的形状，其端头末端位于偏离控制棒的中心轴线的一侧及其端塞的位置。由于不对称塞头与与控制杆流动的冷却剂相互作用的结果，向端塞施加横向稳态力，从而将控制杆端塞压在相应导向套管的壁上。端塞可以采用几种不同的不对称配置。

8. 发明授权

US4798699A Wear sleeve for a control rod end plug 失效
标题翻译：用于控制杆端塞的套筒
公开(公告)号：US4798699A
公开(公告)日：1989-01-17
申请号：US634725
申请日：1984-07-26
申请人： Samuel Cerni , John F. Wilson , Robert K. Gjertsen
发明人： Samuel Cerni , John F. Wilson , Robert K. Gjertsen
IPC分类号： G21C7/10 , G21C7/117 , G21C7/14
CPC分类号： G21C7/117 , G21Y2002/101 , G21Y2004/30 , G21Y2004/302 , Y02E30/39
摘要： A nuclear reactor includes a plurality of upstanding guide thimbles and a plurality of control rods received in the guide thimbles and supported for movement relative to the thimbles between inserted and withdrawn positions. The control rods each include a tubular cladding member and an end plug attached to a lower end of the member. The improvement relates to an wear sleeve disposed on the end plug so as to provide a contact interface between the control rod and its respective guide thimble. The sleeve is composed of material similar to that of the guide thimble and attached to the end plug by an interlock connection. The interlock connection includes a circumferential groove formed in the end plug and a circumferential protuberance swaged or mechanically roll formed in the sleeve so as to extend into the end plug groove.
摘要翻译：核反应堆包括多个直立引导套管和多个控制杆，其容纳在引导套管中并被支撑以相对于插入位置和撤回位置之间的套管移动。控制杆各自包括管状包覆部件和附接到部件的下端的端塞。该改进涉及设置在端塞上的耐磨套筒，以便在控制杆和其各自的导向套管之间提供接触界面。套筒由与导向套管类似的材料组成，并通过互锁连接连接到端塞上。互锁连接包括形成在端塞中的周向槽和在套筒中形成的周向隆起的模锻或机械辊，以便延伸到端塞槽中。

9. 发明授权

US4678618A Individual source positioning mechanism for a nuclear reactor fuel assembly 失效
标题翻译：用于核反应堆燃料组件的单个源定位机构
公开(公告)号：US4678618A
公开(公告)日：1987-07-07
申请号：US642607
申请日：1984-08-20
申请人： John F. Wilson , Robert K. Gjertsen , Samuel Cerni
发明人： John F. Wilson , Robert K. Gjertsen , Samuel Cerni
IPC分类号： G21C7/34 , G21C3/33
CPC分类号： G21C3/331 , G21C3/33 , G21C3/3315 , G21Y2002/304 , G21Y2004/30 , Y02E30/40
摘要： A secondary source positioning mechanism for a fuel assembly in a nuclear reactor locates an individual one of the secondary sources in a respective guide thimble of the fuel assembly aligned with an opening defined through the upper core plate which overlies the fuel assembly. The positioning mechanism has a tapered locating boss which registers with a chamfer on the lower side of the core plate about one of its openings and a resilient holddown device which resiliently couples the upper end of a rod containing the secondary source to the locating boss in a manner which restrains the upper end of the rod in the lateral direction and positions the secondary source rod in the axial direction.
摘要翻译：用于核反应堆中的燃料组件的次级源定位机构将单独的一个次级源定位在燃料组件的相应导向套管中，该导向套管与通过覆盖燃料组件的上芯板限定的开口对准。定位机构具有锥形定位凸台，该凸台与其中一个开口的芯板的下侧上的倒角对准，以及弹性压紧装置，其将包含次级源的杆的上端弹性耦合到定位凸台限制杆的上端在横向方向上并且将次级源杆沿轴向定位的方式。

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