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1.发明授权System and method for removing and consolidation fuel rods of a nuclear fuel assembly 失效用于拆卸和整合核燃料组件的燃料棒的系统和方法
公开(公告)号：US4952072A
公开(公告)日：1990-08-28
申请号：US311435
申请日：1989-02-16
IPC分类号： G21C19/34
CPC分类号： G21C19/34
摘要： A system and a method for removing and consolidating the spent fuel rods of a fuel assembly is disclosed herein. The sytem comprises a pushing assembly having a push rod for pushing a selected fuel rod out of a fuel assembly, a fuel assembly positioner including an elevator for conveniently positioning a fuel assembly within the spent fuel pool of a nuclear facility, a rod catching grid for preventing the pushed-out fuel rods from falling to the bottom of the pool and a transition cannister for funneling the rods into a consolidated arrangement within a storage cannister. In operation, the push rod is positioned over and engaged against the upper end of a fuel rod to be removed from the assembly. Thus engaged, the push rod is inserted through the cells in the grids of the fuel assembly that surround the selected fuel rod, thereby pushing it out of the fuel assembly. Thus the grid cells are used as an alignment means for the push rod during the rod-pushing operation.
摘要翻译： 本文公开了一种用于去除和固结燃料组件的乏燃料棒的系统和方法。 该系统包括具有用于将选定的燃料棒推出燃料组件的推杆的推动组件，包括用于将燃料组件方便地定位在核设施的乏燃料池内的电梯的燃料组件定位器，用于 防止被推出的燃料棒落到池底部;以及过渡罐，用于将棒料斗放入储存罐内的固结装置中。 在操作中，推杆定位在燃料棒的上端并与其接合以从组件移除。 因此，推杆通过围绕选定燃料棒的燃料组件的格栅中的电池插入，从而将其推出燃料组件。 因此，网格单元在推杆操作期间用作推杆的对准装置。
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2.发明授权Vent system for displacer rod drive mechanism of pressurized water reactor and method of operation 失效压水反应器置换杆驱动机构排气系统及其运行方法
公开(公告)号：US4752433A
公开(公告)日：1988-06-21
申请号：US806719
申请日：1985-12-09
申请人： Denis J. Altman , Steven J. Lovasic , John V. Miller , Allen L. Morris , Eric D. Rinker , Terry L. Schulz , Donald G. Sherwood , William R. Snyder
发明人： Denis J. Altman , Steven J. Lovasic , John V. Miller , Allen L. Morris , Eric D. Rinker , Terry L. Schulz , Donald G. Sherwood , William R. Snyder
CPC分类号： G21C7/16 , G21C7/26 , G21Y2002/301 , G21Y2004/30 , G21Y2004/40 , Y02E30/32 , Y02E30/39
摘要： A vent system for controlling hydraulically actuated drive means for selectively moving pluralities of rod clusters respectively connected to the plurality of drive means between fully inserted positions within the lower barrel assembly of the vessel in telescoping relationship with fuel rod assemblies contained therein, and a fully withdrawn position. Each drive means responds to the reactor coolant fluid pressure and includes a leakage passage and an outlet channel through which a leakage flow may pass under control of the vent system, the latter comprising a valve arrangement, flow restrictors and a common orifice through which the outlet channels are selectively connected to essentially ambient pressure, for establishing a pressure differential within each drive means producing a net force for moving the drive rods and associated clusters to the withdrawn position at which the drive means mechanically latch the fully withdrawn clusters for mechanically supporting same in the fully withdrawn position. The valve arrangement may be selectively actuated to reestablish the pressure differential within each drive means thereby to raise the associated drive rods and release same from the mechanically latched positions, after which the valve arrangement is selectively operated to establish pressure equilibrium within the drive means to permit the corresponding drive rods and associated control rod clusters to fall by force of gravity to the fully inserted positions thereof. Display indications and control panel operation provide for operator sensing of the rod cluster positions and control of the valve arrangement.
摘要翻译： 一种排气系统，用于控制液压致动的驱动装置，用于选择性地移动分别连接到多个驱动装置的多个杆状集束，该容器在容器的下部筒组件内的完全插入位置与其中所包含的燃料棒组件呈伸缩关系，并且完全撤回 位置。 每个驱动装置响应于反应堆冷却剂流体压力，并且包括泄放通道和出口通道，在通气系统的控制下，泄漏通道可通过泄漏通道，后者包括阀装置，限流器和共同的孔口，出口 通道选择性地连接到基本环境压力，用于在每个驱动装置内建立压力差，产生用于将驱动杆和相关联的集群移动到撤回位置的净力，在该位置处驱动装置机械地闩锁完全取出的簇， 完全撤回的位置。 可以选择性地启动阀装置以重新建立每个驱动装置内的压力差，从而提升相关联的驱动杆并将其从机械锁定位置释放，然后选择性地操作阀装置以在驱动装置内建立压力平衡以允许 相应的驱动杆和相关联的控制杆团簇通过重力下降到其完全插入位置。 显示指示和控制面板操作提供操作员感测杆组位置和控制阀装置。
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3.发明授权
公开(公告)号：US4707331A
公开(公告)日：1987-11-17
申请号：US798194
申请日：1985-11-14
CPC分类号： G21C5/10 , G21C7/117 , G21Y2002/101 , G21Y2002/402 , G21Y2004/30 , G21Y2004/301 , Y02E30/32 , Y02E30/39
摘要： A top end support for rod guides disposed in closely spaced, parallel axial relationship within an inner barrel assembly of a pressurized water reactor vessel includes, in telescoping relationship, a generally cylindrical support having an end closure with a central aperture therein for receiving a downwardly depending extension from a lower calandria plate and a sleeve having an outer periphery corresponding in cross-section to that of said rod guide and affixed thereto at its lower end, the sleeve having an interior, generally cylindrical surface for receiving the cylindrical support in close engagement therein. The telescopingly engaged, generally cylindrical surfaces of the cylindrical support and the sleeve provide substantial area to function as a long-life wear couple. Both the end closure and the cylindrical sidewalls of the fixed cylindrical support and the interior surface of the sleeve are configured so as to correspond to the perimeter of flow holes disposed in a symmetrical array about the associated depending extension, to permit unimpeded passage therethrough of the core outlet flow.
摘要翻译： 在压缩水反应堆容器的内筒组件内设置成紧密间隔的平行轴向关系的杆导向件的顶端支撑件包括大致圆柱形的支撑件，其具有端盖，其中具有中心孔，用于接收向下的 从下部卡路里板和套筒的延伸部分，其外周部在横截面上对应于所述杆引导件的外周边，并且在其下端固定到其上，套筒具有用于容纳圆柱形支撑件的内部大致圆柱形表面， 。 圆柱形支撑件和套筒的可伸缩接合的大致圆柱形表面提供了大的面积，用作长寿命的磨损。 固定圆柱形支撑件的端部封闭件和圆柱形侧壁以及套筒的内表面都构造成对应于围绕相关联的延伸部分以对称排列设置的流动孔的周边，以允许不受阻碍地通过 核心出口流。
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公开(公告)号：US4550941A
公开(公告)日：1985-11-05
申请号：US217055
申请日：1980-12-16
CPC分类号： G21C19/12 , G21C7/12 , G21C7/16 , G21Y2002/40 , G21Y2004/30 , G21Y2004/502 , Y02E30/32 , Y02E30/39 , Y10S294/906 , Y10T403/22
摘要： The hydraulic drive mechanism comprises an hydraulically actuated rod drive mechanism that cooperates with a pivotable latching mechanism. The pressurized reactor coolant is utilized to raise the drive rod into contact with and to pivot the latching mechanism so as to allow the drive rod to pass the latching mechanism. The pressure in the housing is then equalized which allows the drive rod to move downwardly into contact with the latching mechanism but remain in a raised position with respect to the reactor core. Once again, the reactor coolant pressure may be utilized to raise the drive rod and thus pivot the latching mechanism so that the drive rod passes above the latching mechanism. Again, the mechanism pressure can be equalized which allows the drive rod to fall and pass by the latching mechanism so that the drive rod approaches the reactor core.
摘要翻译： 液压驱动机构包括与可枢转闭锁机构配合的液压驱动杆驱动机构。 加压反应堆冷却剂用于升高驱动杆与闭锁机构接触并使其枢转，从而允许驱动杆通过闭锁机构。 然后将壳体中的压力相等，其允许驱动杆向下移动以与闩锁机构接触，但是相对于反应堆芯保持在升高位置。 再次，可以利用反应堆冷却剂压力来升高驱动杆并因此使闩锁机构枢转，使得驱动杆通过闩锁机构上方。 再次，机构压力可以相等，这允许驱动杆落下并通过闩锁机构，使得驱动杆接近反应堆芯。
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5.发明授权
公开(公告)号：US5864594A
公开(公告)日：1999-01-26
申请号：US692840
申请日：1996-08-02
申请人： Leonard J. Balog , Bruce W. Bevilacqua , Ronald J. Hopkins , Arthur W. Kramer , Donald G. Sherwood
发明人： Leonard J. Balog , Bruce W. Bevilacqua , Ronald J. Hopkins , Arthur W. Kramer , Donald G. Sherwood
CPC分类号： G21C13/02 , G21C19/00 , G21C19/207 , G21Y2002/204 , G21Y2002/302 , G21Y2002/402 , G21Y2002/501 , G21Y2004/30 , G21Y2004/403 , G21Y2004/504 , Y02E30/40
摘要： An apparatus and method are provided for replacing the existing lower internal components in a nuclear reactor vessel with new components. The alignment of the new lower internals to the pressure vessel and the existing upper internals is achieved by customizing the new lower internals on-site based on alignment measurements obtained by gages installed on the new core barrel and the existing upper core plate. The gages allow the custom machining of radial support keys on the lower portion of the new core barrel and the custom drilling of upper core plate alignment pin holes in the new core barrel.
摘要翻译： 提供了一种装置和方法，用于用新的部件代替核反应堆容器中现有的较低内部部件。 新的下部内部件与压力容器和现有的上部内部件的对准是通过基于安装在新的芯筒和现有的上部芯板上的量规获得的对准测量现场定制新的下部内部件而实现的。 量具允许在新的芯筒的下部定制加工径向支撑键，并且在新的芯筒中定制钻上上芯板对准销孔。
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公开(公告)号：US4849162A
公开(公告)日：1989-07-18
申请号：US670732
申请日：1984-11-13
摘要： Modular neutron reflector assemblies removably insertable into the irregular space in a nuclear reactor between a generally cylindrical array of square fuel assemblies comprising the core and the cylindrical core barrel surrounding the core, include an elongated enclosure having a strongback adjacent the core barrel and flat plates adjacent the fuel assemblies. The strongback is thicker than the steel plates by an amount which results in the strongback and plates reaching approximately the same temperature to minimize thermal stresses despite the 8 to 20 times greater nuclear heating at the core side of the enclosure as opposed to that at the core barrel side. The enclosure is suspended by a single point mounting on the core barrel which permits vertical, radial, and circumferential expansion but a pin depending from the lower end of the enclosure slides in a vertical bore in the reactor lower core support plate to limit lateral movement while allowing unrestrained vertical expansion and contraction. A separately removable reflector unit in each enclosure comprises a bundle of closely packed stainless steel circular rods with smaller diameter rods inserted in the interstices between the larger rods to generate a 0.90-0.92% volume fraction of stainless steel while also providing a distributed array of small longitudinal passages for reactor coolant. Selected rods are suspended from a cover plate on the module with the remaining rods suspended from a horizontal plate which is in turn, suspended from the selected rods so that the rods are all free to expand and contract vertically.
摘要翻译： 模块化中子反射器组件可拆卸地插入核反应堆中的不规则空间中，该矩形中心反射器组件包括围绕芯的方形燃料组件的方形燃料组件的大致圆柱形阵列，其包括细长的壳体，其具有与核心筒相邻的强力和相邻的平板 燃料组件。 强度比钢板厚一些，导致强度和板达到大致相同的温度，以最小化热应力，尽管在外壳的核心侧与核心处的核加热相比，加热8至20倍 桶边。 外壳通过安装在芯筒上的单点悬挂，其允许垂直，径向和周向膨胀，但是从外壳的下端悬垂的销在反应器下芯支撑板中的垂直孔中滑动以限制横向移动，同时 允许无限制的垂直膨胀和收缩。 每个外壳中可分开拆卸的反射器单元包括紧密包装的不锈钢圆棒，其中较小直径的杆插入较大棒之间的空隙中以产生不锈钢的0.90-0.92％体积分数，同时还提供小的分布阵列 反应堆冷却液的纵向通道。 选定的杆悬挂在模块上的盖板上，剩余的杆悬挂在水平板上，水平板又悬挂在选定的杆上，使得杆可以自由地垂直地膨胀和收缩。
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公开(公告)号：US4692296A
公开(公告)日：1987-09-08
申请号：US946111
申请日：1986-12-24
摘要： The mechanical spectral shift reactor comprises apparatus for inserting and withdrawing water displacer elements from the reactor core for selectively changing the water-moderator volume in the core thereby changing the reactivity of the core. The apparatus may include drive mechanisms for moving the displacer elements relative to the core and guide mechanisms for guiding the displacer rods through the reactor vessel. An array of tubes may be disposed between the guide mechanisms and the fuel assemblies for guidance and minimization of flow induced vibrations of the displacer elements.
摘要翻译： 机械光谱变换反应器包括用于从反应堆核心插入和取出水置换元件的装置，用于选择性地改变芯体中的水慢化剂体积，从而改变芯的反应性。 该装置可以包括用于相对于芯移动置换器元件的驱动机构和用于引导置换棒通过反应器容器的引导机构。 一组管可以设置在引导机构和燃料组件之间，用于引导和最小化置换器元件的流动引起的振动。
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公开(公告)号：US4659539A
公开(公告)日：1987-04-21
申请号：US490101
申请日：1983-04-29
摘要： To preclude failure of components of control-rod assemblies or of unprotected control rods (WDRC's) a calandria is provided above the upper internals. The calandria includes hollow tubes through which the drive rods for the various control rods pass and which protect the drive rods. The guides for the control rods are closed except at the top so that the coolant flows vertically through the guides into the calandria. In the calandria, the coolant flows transversely to the hollow tubes and out through the outlet nozzle. The tubes have a mass and stiffness and strength such that they resist failure by reason of the transverse flow of the coolant to which they are subjected.
摘要翻译： 为了防止控制棒组件或未受保护的控制杆（WDRC）的组件发生故障，在上部内部上方提供了一个加热器。 加热器包括中空管，用于各种控制棒的驱动杆通过该中空管通过并保护驱动杆。 除了顶部外，控制杆的引导件是关闭的，因此冷却剂将垂直通过引导件流入卡路里。 在加热器中，冷却剂横向流过中空管并通过出口喷嘴流出。 管具有质量和刚度和强度，使得它们由于其所经受的冷却剂的横向流动而抵抗故障。
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公开(公告)号：US4832899A
公开(公告)日：1989-05-23
申请号：US884333
申请日：1986-07-11
申请人： John F. Wilson , Donald G. Sherwood
发明人： John F. Wilson , Donald G. Sherwood
CPC分类号： G21C7/27 , G21C7/117 , G21Y2002/201 , G21Y2004/10 , G21Y2004/40 , Y02E30/39
摘要： The mechanical spectral shift reactor comprises a reactive core having fuel assemblies accommodating both water displacer elements and control rods for selectively changing the volume of water-moderator in the core. The fuel assemblies are arranged in alternating fashion so that one drive mechanism may move displacer elements in more than one fuel assembly without interfering with the movement of control rods or the corresponding control rod drive mechanisms.
摘要翻译： 机械光谱变换反应器包括具有燃料组件的反应性核心，其具有容纳用于选择性地改变芯体中的水慢化剂体积的水置换元件和控制棒。 燃料组件以交替方式布置，使得一个驱动机构可以移动多于一个燃料组件中的置换器元件，而不会干扰控制杆或相应的控制杆驱动机构的移动。
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公开(公告)号：US4751043A
公开(公告)日：1988-06-14
申请号：US912664
申请日：1986-09-29
IPC分类号： G21C11/06
摘要： A radial neutron reflector is disclosed for a light water nuclear reactor. The irregular space between the core periphery and the core barrel surrounding the core is filled with a structure comprising material other than hydrogen such as zirconia or stainless steel so as to displace the reactor water coolant in this region. The structure is provided with appropriately sized flow holes to pass reactor coolant therethrough and to balance the pressure within the structure to substantially coincide with the axial pressure profile at the core periphery.
摘要翻译： 公开了一种用于轻水核反应堆的径向中子反射器。 围绕芯部的芯部周边和芯部筒体之间的不规则空间填充有包括除氢之外的材料（例如氧化锆或不锈钢）的结构，以便使该区域中的反应堆水冷却剂移位。 该结构设置有适当尺寸的流动孔，以使反应堆冷却剂通过其中并且平衡结构内的压力以与芯部周边处的轴向压力分布基本一致。
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