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246 条记录 (耗时 0.013 秒)

    Nuclear reactor support and seismic restraint with core retention cooling features
    42.
    发明授权
    Nuclear reactor support and seismic restraint with core retention cooling features 有权

    公开(公告)号：US10825571B2

    公开(公告)日：2020-11-03

    申请号：US15675850

    申请日：2017-08-14

    申请人： BWXT mPower, Inc.

    发明人： Tyler A. Edwards ,  Michael J. Edwards

    IPC分类号： G21C13/024 ,  G21C9/016 ,  G21C5/10 ,  G21C15/18

    摘要： A nuclear island includes a nuclear reactor, a lateral seismic restraint, and a reactor core retention cooling system. The lateral seismic restraint includes a vertically oriented pin attached to one of the bottom of the lower vessel head and the floor underneath the nuclear reactor, and a mating pin socket is attached to the other of the bottom of the lower vessel head and the floor. The reactor core retention cooling system includes one or more baffles, optionally thermally insulating material, disposed alongside the exterior surface of a lower portion of the reactor pressure vessel including at least the lower vessel head. A plenum is defined between the one or more baffles and the exterior surface of a lower portion of the reactor pressure vessel. The one or more baffles may define a lower plenum inlet surrounding the lateral seismic restraint.

    Suspended upper internals with tie rod couplings for compact nuclear reactor
    44.
    发明授权
    Suspended upper internals with tie rod couplings for compact nuclear reactor 有权

    公开(公告)号：US09887015B2

    公开(公告)日：2018-02-06

    申请号：US13860586

    申请日：2013-04-11

    申请人： BWXT mPower, Inc.

    发明人： Scott J Shargots

    IPC分类号： G21C7/117 ,  G21C5/02 ,  G21C5/10 ,  G21C7/12 ,  G21C1/08 ,  G21C1/32

    CPC分类号： G21C7/117 ,  G21C1/086 ,  G21C1/322 ,  G21C5/02 ,  G21C5/10 ,  G21C7/12 ,  Y02E30/39

    摘要： A suspended basket includes a plurality of plates, tie rods, and adjustable length threaded tie rod couplings connecting threaded ends of the tie rods with threaded features of the plates. Control rod drive mechanisms (CRDMs) with CRDM motors are mounted in the suspended basket, which is suspended in a pressure vessel above a nuclear reactor core to control insertion of control rods into the reactor core. In one embodiment each adjustable length threaded tie rod coupling is a turnbuckle coupling that includes a sleeve threaded onto the threaded end of the tie rod and onto the threaded feature of the plate, and the sleeve is rotatable to adjust the position of the tie rod respective to the plate. Guide frames may be mounted in the suspended basket between the CRDMs and the nuclear reactor core to guide portions of the control rods withdrawn from the nuclear reactor core.

    NUCLEAR REACTOR SUPPORT AND SEISMIC RESTRAINT
    46.
    发明申请
    NUCLEAR REACTOR SUPPORT AND SEISMIC RESTRAINT 审中-公开
    核反应堆支持和地震限制

    公开(公告)号：US20150364222A1

    公开(公告)日：2015-12-17

    申请号：US14301789

    申请日：2014-06-11

    申请人： BWXT mPower, Inc.

    发明人： James B. INMAN ,  Lewis C. HARTLESS ,  Michael J. EDWARDS

    IPC分类号： G21C5/10

    CPC分类号： G21C5/10 ,  G21C9/04 ,  G21C13/024 ,  Y02E30/40

    摘要： A nuclear reactor is supported by a primary support anchored to a civil structure and defining a reactor support plane located below the center of gravity of the nuclear reactor. A lateral seismic support engages the nuclear reactor below the reactor support plane to prevent lateral motion of the nuclear reactor. In one approach a flange, protrusion, or ledge of the reactor pressure vessel rests on a support engagement surface, a seismic rotational restraint assembly prevents the nuclear reactor from rotating during a seismic event, and a liftoff prevention assembly prevents vertical liftoff of the flange, protrusion, or ledge of the reactor pressure vessel from the support engagement surface. The lateral seismic support may comprise a pin connected with the bottom of the reactor pressure vessel engaging a pin socket connected with or formed in a floor of the civil structure of the radiological containment containing the nuclear reactor.

    摘要翻译： 核反应堆由锚固于民用结构的主要支撑支撑，并且定义位于核反应堆重心下方的反应堆支撑平面。 横向地震支架将反应堆支撑平面下方的核反应堆接合，以防止核反应堆的横向运动。 在一种方法中，反应堆压力容器的凸缘，突起或凸缘搁置在支撑接合表面上，地震旋转约束装置防止核反应堆在地震事件期间旋转，并且防止离开组件防止凸缘的垂直提升， 突起或反应堆压力容器的突出部。 横向地震支架可以包括与反应堆压力容器的底部连接的销，其接合与包含核反应堆的放射性容纳物的民用结构的地板连接或形成的销座。

    Reactor core shroud repair using splice plate to bridge weld seam
    49.
    发明授权
    Reactor core shroud repair using splice plate to bridge weld seam 失效
    使用拼接板桥接焊缝的反应堆芯护罩修复

    公开(公告)号：US5905771A

    公开(公告)日：1999-05-18

    申请号：US975784

    申请日：1997-11-21

    申请人： John Geddes Erbes ,  Grant Clark Jensen ,  James Edward Charnley

    发明人： John Geddes Erbes ,  Grant Clark Jensen ,  James Edward Charnley

    IPC分类号： G01N25/30 ,  G01N27/16 ,  G21C5/10 ,  G21C13/02 ,  G21C19/02 ,  G21C19/00

    CPC分类号： G21C5/10 ,  G21C13/02 ,  G21Y2002/104 ,  G21Y2002/40 ,  G21Y2004/301 ,  G21Y2004/504 ,  Y02E30/40 ,  Y10T29/49741 ,  Y10T403/75

    摘要： An apparatus for repairing a shroud in which one or more seam welds are cracked. The repair involves the attachment of a splice bracket to the shroud so that the bracket bridges the cracked weld seam and is applicable to both vertical and horizontal weld seams. The bracket is intended to structurally replace the shroud seam weld which is cracked. Multiple splice brackets can be placed along the length of a crack. Each splice bracket is attached to the shroud by a plurality of tapered fastener assemblies. Each tapered fastener assembly includes a first fastener element having a threaded surface and a conical surface coaxial with the threaded surface; a slotted sleeve having an internal surface which matches the conical surface of the first fastener element and an external surface which matches a circular cylindrical surface, and a flange which extends radially outward beyond the external surface; and a second fastener element having a threaded surface threadably engaged with the threaded surface of the first fastener element. The sleeve fits inside aligned holes in the splice bracket and shroud.

    摘要翻译： 一种用于修复其中一个或多个缝焊缝破裂的护罩的装置。 修理涉及将接头支架连接到护罩上，以便支架将裂缝焊接接合，并适用于纵向和横向的焊缝。 支架旨在在结构上更换破裂的护层焊缝。 多个拼接支架可以沿着裂缝的长度放置。 每个接头支架通过多个锥形紧固件组件附接到护罩。 每个锥形紧固件组件包括具有螺纹表面和与螺纹表面同轴的锥形表面的第一紧固元件; 具有与第一紧固件元件的锥形表面匹配的内表面和与圆柱形表面匹配的外表面的开槽套筒以及径向向外延伸超过外表面的凸缘; 以及第二紧固元件，其具有与第一紧固元件的螺纹表面螺纹接合的螺纹表面。 套筒适合接合支架和护罩中的对准孔。