CONTROL ROD/CONTROL ROD DRIVE MECHANISM COUPLINGS

    公开(公告)号:US20160254065A1

    公开(公告)日:2016-09-01

    申请号:US15149701

    申请日:2016-05-09

    IPC分类号: G21C7/14 G21C7/117

    摘要: A nuclear reactor includes a pressure vessel, and a control rod assembly including at least one movable control rod comprising a neutron absorbing material, a control rod drive mechanism (CRDM) for controlling movement of the at least one control rod, and a coupling operatively connecting the at least one control rod and the CRDM. The coupling includes a first portion comprising a first material having a first density at room temperature, and a second portion comprising a second material having a second density at room temperature that is greater than the first density. In some embodiments the coupling includes a connecting rod including a hollow or partially hollow connecting rod tube comprising a first material having a first density and a filler disposed in the hollow or partially hollow connecting rod tube, the filler comprising a second material having a second density greater than the first density.

    CRDM DESIGNS WITH SEPARATE SCRAM LATCH ENGAGMENT AND LOCKING
    2.
    发明申请
    CRDM DESIGNS WITH SEPARATE SCRAM LATCH ENGAGMENT AND LOCKING 审中-公开
    CRDM设计与分离式锁定机构和锁定

    公开(公告)号:US20140334586A1

    公开(公告)日:2014-11-13

    申请号:US14255201

    申请日:2014-04-17

    IPC分类号: G21C7/14

    摘要: A control rod drive mechanism (CRDM) includes a lifting rod supporting a control rod and a holding mechanism comprising an electromagnetic circuit with magnetic poles drawn together when the electromagnetic circuit is energized to hold the lifting rod. The hold is released upon de-energizing the electromagnetic circuit. A translation mechanism linearly translates the lifting rod held by the holding mechanism. The holding mechanism may include a non-magnetic spacer between the magnetic poles that defines a gap between the drawn together magnetic poles. The translation mechanism may include latches configured to engage an upper end of the lifting rod, and the holding mechanism draws the magnetic poles together to hold the latches engaged with the upper end of the lifting rod. A four-bar cam assembly may be used to cam the latches closed in response to a vertical actuation force applied to the cam bars.

    摘要翻译: 控制杆驱动机构(CRDM)包括支撑控制杆的提升杆和包括电磁回路的保持机构,该电磁线圈当电磁线圈被通电以保持提升杆时被拉在一起。 在电磁电路断电时释放保持。 平移机构使由保持机构保持的提升杆线性地平移。 保持机构可以包括在磁极之间限定拉出的一起的磁极之间的间隙的非磁性间隔物。 平移机构可以包括构造成接合提升杆的上端的闩锁,并且保持机构将磁极拉到一起以保持与提升杆的上端接合的闩锁。 可以使用四杆凸轮组件来响应于施加到凸轮杆的垂直致动力来使闩锁闭合。

    Method of operating a pressurized-water nuclear reactor for reaching a plutonium equilibrium cycle
    4.
    发明授权
    Method of operating a pressurized-water nuclear reactor for reaching a plutonium equilibrium cycle 有权
    操作加压水核反应堆以达到钚平衡循环的方法

    公开(公告)号:US08767904B2

    公开(公告)日:2014-07-01

    申请号:US13389243

    申请日:2010-07-21

    摘要: A method is provided for operating a nuclear reactor. The method includes operating the nuclear reactor for an initial cycle during which a core contains initial nuclear fuel assemblies; then operating the nuclear reactor for transition cycles, at least some of the initial nuclear fuel assemblies being progressively replaced, during the replacement steps preceding the transition cycles, with transition nuclear fuel assemblies or with plutonium-equilibrium nuclear fuel assemblies; and then operating the nuclear reactor for at least one plutonium equilibrium cycle during which the core contains only plutonium-equilibrium nuclear fuel assemblies.

    摘要翻译: 提供了一种操作核反应堆的方法。 该方法包括操作核反应堆的初始循环,其中核心包含初始核燃料组件; 然后操作核反应堆进行过渡循环,在过渡循环之前的替换步骤中,过渡核燃料组件或与钚平衡的核燃料组件一起,至少部分初始核燃料组件逐渐被替换; 然后操作核反应堆至少一个钚平衡循环,在此期间核心仅包含钚平衡核燃料组件。

    Nuclear reactor control rod spider assembly
    5.
    发明授权
    Nuclear reactor control rod spider assembly 有权
    核反应堆控制棒蜘蛛装配

    公开(公告)号:US08483346B2

    公开(公告)日:2013-07-09

    申请号:US11735612

    申请日:2007-04-16

    IPC分类号: G21C7/06

    摘要: A control rod spider assembly connection between a connecting finger and a rodlet. An upper end plug of the rodlet is secured to the inner bore of the hollow connecting finger with a mating one of a right hand or left hand thread interfacing between the interior of the bore and the circumference of the rodlet. The upper end of the rodlet is captured by a second fastener mechanism having the other of the right hand or the left hand thread. The second fastener mechanism is anchored to one or both of the connecting finger or the upper end plug to secure the connection.

    摘要翻译: 连接手指和小棒之间的控制棒蜘蛛组件连接。 小肠的上端塞通过在孔的内部和小肠的圆周之间的右手或左手螺纹的配合中的一个固定到中空连接指的内孔上。 棒的上端由具有右手或左手螺纹中的另一个的第二紧固件机构捕获。 第二紧固件机构被锚固到连接手指或上端塞中的一个或两个以固定连接。

    CONTROL ROD FOR A NUCLEAR POWER LIGHT WATER REACTOR
    6.
    发明申请
    CONTROL ROD FOR A NUCLEAR POWER LIGHT WATER REACTOR 有权
    一种核能动力水反应堆的控制杆

    公开(公告)号:US20130051510A1

    公开(公告)日:2013-02-28

    申请号:US13696525

    申请日:2011-04-08

    IPC分类号: G21C7/24 G21C7/113

    摘要: The invention concerns a control rod configured for a nuclear power light water reactor of the BWR or PWR kind. The control rod contains absorber material. At least 50%, with respect to weight, of the absorber material that is in the control rod is in the form of hafnium hydride. The invention also concerns the use of such a control rod during operation in a nuclear power light water reactor of the BWR or PWR kind.

    摘要翻译: 本发明涉及一种配置用于BWR或PWR类型的核电轻水反应堆的控制棒。 控制棒包含吸收材料。 对照棒中的吸收材料的重量至少为50重量%为氢化铪的形式。 本发明还涉及在BWR或PWR类型的核电轻水反应堆中操作期间使用这种控制棒。

    Interlock assembly for burnable poison rod transfer device
    7.
    发明授权
    Interlock assembly for burnable poison rod transfer device 有权
    用于可燃中毒棒传送装置的联锁组件

    公开(公告)号:US06327322B1

    公开(公告)日:2001-12-04

    申请号:US09362004

    申请日:1999-07-27

    IPC分类号: G21C1910

    CPC分类号: G21C7/117 G21C19/10 Y02E30/39

    摘要: A transfer device for moving a poison rod assembly between fuel cells in a nuclear fuel storage facility coupleable to an overhead crane. The poison rod assembly has a plurality of poison rods disposed in rows. The device includes an elongated outer member, an inner member, and a gripper assembly supported by the inner member. The inner member is slidably disposed within the elongated outer member. The overhead crane is coupled to the inner member for sliding said inner member between an upper position and a lower position. An interlock assembly selectively couples the inner member and elongated outer member. Thus, moving the crane, which is coupled to the inner member either moves the inner member relative to the elongated outer member when the interlock is not engaged, or, moves both the inner member and the elongated outer member when the interlock is engaged.

    摘要翻译: 一种转移装置,用于在连接到桥式起重机的核燃料储存设备中的燃料电池之间移动毒药棒组件。 毒药棒组件具有排成行的多个毒药棒。 该装置包括细长的外部构件,内部构件和由内部构件支撑的夹持器组件。 内部构件可滑动地设置在细长的外部构件内。 桥式起重机联接到内部构件,用于在上部位置和下部位置之间滑动所述内部构件。 互锁组件选择性地联接内部构件和细长的外部构件。 因此,当互锁不接合时,联接到内部构件的起重机移动内部构件相对于细长外部构件,或者当联锁装置接合时移动内部构件和细长外部构件。

    Internal equipment for a nuclear reactor having control cluster guides
    8.
    发明授权
    Internal equipment for a nuclear reactor having control cluster guides 失效
    具有控制集群指南的核反应堆的内部设备

    公开(公告)号:US5416810A

    公开(公告)日:1995-05-16

    申请号:US131629

    申请日:1993-10-05

    摘要: Internal equipments located above the core of a nuclear reactor have a bottom plate formed with outlet openings for the core coolant, a top plate, spacer columns interconnecting the plates, and guides for control clusters that are vertically displacable between a position in which they are in the core and a position in which they are out of the core. At least some guides each have a top length projecting above the top plate, and a bottom length extending between the plates and placed in a corresponding spacer column. Each cluster guide constitutes a cartridge insertable in a respective column, provided with a flange for fixing to the top plate and provided at its bottom end with springs for centering the guide within the column.

    摘要翻译: 位于核反应堆核心之上的内部设备具有形成有用于芯冷却剂的出口开口的底板,顶板,互连板的间隔柱和用于控制簇的引导件,其可在它们所处的位置之间垂直置换 核心和核心地位。 至少一些引导件各自具有突出在顶板上方的顶部长度,以及在板之间延伸并且放置在相应的间隔柱中的底部长度。 每个簇引导件构成可插入到相应列中的盒,其具有用于固定到顶板并且在其底端处设置有用于使引导件在柱内对中的弹簧的凸缘。

    Nuclear reactor internals with cluster guides
    9.
    发明授权
    Nuclear reactor internals with cluster guides 失效
    核反应堆内部与集群指南

    公开(公告)号:US5183628A

    公开(公告)日:1993-02-02

    申请号:US695907

    申请日:1991-05-06

    摘要: Internal equipments suitable for use in a nuclear reactor comprise a lower plate provided with openings for the coolant leaving the core, an upper plate, support columns connecting the plates together and guides for the vertically movable control clusters. Each guide has an upper section fixed to the upper plate and a lower section extending between the upper and lower plates. The lower section (32) comprises a base bearing on a frusto-conical seat fast with the lower plate and is subjected to the action of resilient means exerting a force pressing the base on the seat.

    摘要翻译: 适用于核反应堆的内部设备包括设置有用于离开芯的冷却剂的开口的下板,上板,将板连接在一起的支撑柱和用于可垂直移动的控制组的引导件。 每个引导件具有固定到上板的上部和在上板和下板之间延伸的下部。 下部(32)包括与下板快速连接在截头圆锥形座上的基座,并承受弹力装置的作用,所述弹力装置施加将基座压在座上的力。

    Apparatus for controlling the power output of a nuclear reactor
    10.
    发明授权
    Apparatus for controlling the power output of a nuclear reactor 失效
    用于控制核反应堆功率输出的装置

    公开(公告)号:US5089212A

    公开(公告)日:1992-02-18

    申请号:US560450

    申请日:1990-07-31

    IPC分类号: G21C7/00 G21C7/08 G21C7/117

    摘要: A nuclear reactor, such as advanced pressurized water reactor, with controlled power output includes a reactor core having a cross section in a given plane with a center of area and axes of symmetry passing through the center of area. A multiplicity of control elements are disposed in groups, each having at least one of the control elements. The control elements of each of the groups with more than one control element are joined together. The groups are symmetrical to at least two of the axes of symmetry. Drive mechanisms each move a respective one of the groups of control elements. Each of the control elements has a plurality of control rods. A support structure joins the control rods to one another. Fuel assemblies are disposed in groups. Each of the groups of control elements has a given number of control elements being associated with one of the groups of fuel assemblies having the given number of fuel assemblies. Other fuel assemblies with which the control elements are not associated surround the groups of fuel assemblies.

    摘要翻译: 具有受控功率输出的诸如先进压水反应堆的核反应堆包括在给定平面中具有横截面的反应​​堆堆芯,其面积中心和对称轴线穿过区域中心。 多个控制元件分组地布置,每个具有至少一个控制元件。 具有多个控制元件的组的控制元件被连接在一起。 这些组与至少两个对称轴对称。 驱动机构每个移动控制元件组中的相应一个。 每个控制元件具有多个控制杆。 支撑结构将控制杆彼此连接起来。 燃料组件分组配置。 每组控制元件具有给定数量的控制元件,其与具有给定数量的燃料组件的燃料组件组中的一个相关联。 控制元件与其不相关联的其他燃料组件围绕燃料组件组。