Low stressed rationally shaped core support
    1.
    发明授权
    Low stressed rationally shaped core support 失效
    低调压力理性地形成核心支撑

    公开(公告)号:US4657730A

    公开(公告)日:1987-04-14

    申请号:US547294

    申请日:1983-10-28

    IPC分类号: G21C5/10 G21C9/00 G21C13/00

    CPC分类号: G21C5/10 Y02E30/40

    摘要: The lower end of a nuclear reactor core barrel (16) is laterally stabilized within the reactor pressure vessel (10) by four auxiliary support structures (100) equiangularly disposed about the periphery of the reactor lower hemispherical shell (12). The core barrel lower support plate (18) has keys (122) secured thereto for disposition within recesses (114) defined within crossbeams (102) of the structures (100) through which horizontal radial and tangential forces, as well as severe vertical loads, are transmitted from the core barrel (16) to the reactor vessel (10). Shock absorbers (120) interconnect the keys (122) and the crossbeams (102), and divergent brackets (104) serve to radially space the crossbeam (102) from the shell wall (12) so as to define a vertical coolant flow channel (108) through each structure (100). The divergent brackets (104) serve to distribute radial loads from the core barrel (16) to the pressure vessel (10) as radial compression forces, and to convert tangential bending moments into circumferential shear and radial compression forces. Upper inclined portions (162) of the brackets (104) serve to vertically centralize the center of load (160) of horizontal tangential forces relative to the brackets' centers of gravity (152) so as to eliminate vertical bending moments, and inclined lower portions (139) of the brackets (104) serve to convert vertical bending loads into circumferential shear and radial compression forces.

    摘要翻译: 核反应堆芯筒(16)的下端通过围绕反应器下半球壳(12)的周边等角地设置的四个辅助支撑结构(100)在反应堆压力容器(10)内侧向稳定。 芯筒下支撑板(18)具有固定到其上的键(122),用于配置在限定在结构(100)的横梁(102)内的凹槽(114)内,水平径向和切向力以及严重的垂直载荷, 从芯筒(16)传送到反应容器(10)。 减震器(120)将键(122)和横梁(102)互相连接,并且发散支架(104)用于使横梁(102)与壳壁(12)径向间隔开,以便限定竖直的冷却剂流动通道 108)通过每个结构(100)。 发散支架(104)用于将径向载荷从芯筒(16)分配到压力容器(10),作为径向压缩力,并将切向弯矩转化为周向剪切和径向压缩力。 托架(104)的上倾斜部分(162)用于使相对于支架重心(152)的水平切向力的载荷中心(160)垂直集中,以消除垂直弯矩,并且倾斜下部 托架(104)中的(139)用于将垂直弯曲载荷转化为周向剪切力和径向压缩力。

    Reactor vessel O-ring spring clip
    2.
    发明授权
    Reactor vessel O-ring spring clip 失效
    反应釜O形弹簧夹

    公开(公告)号:US4980117A

    公开(公告)日:1990-12-25

    申请号:US192030

    申请日:1988-05-09

    摘要: A reactor vessel O-ring spring clip designed to hold the tubular O-ring in the groove of a reactor vessel head flange, especially during head lifting. The spring clip is designed such that the weight of the O-ring acts to increase the friction force between the spring clip and the, typically, threaded hole into which it is inserted. The end of the clip adapted to be inserted through a slot in the tubular O-ring for securement thereto has a circular member thereon which prevents the spring clip from becoming disengaged from the O-ring during head lifting.

    摘要翻译: 反应堆容器O形环弹簧夹,设计用于将管状O形环保持在反应堆容器头部凸缘的槽中,特别是在头部提升期间。 弹簧夹被设计成使得O形圈的重量用于增加弹簧夹与通常被插入其中的螺纹孔之间的摩擦力。 适于插入通过管状O形环中的狭槽以固定到其上的夹子的端部具有在其上的圆形构件,其防止弹簧夹在头部抬起期间与O形环脱离接合。

    Guide tube flow restrictor
    3.
    发明授权
    Guide tube flow restrictor 失效
    导管流量限制器

    公开(公告)号:US4664879A

    公开(公告)日:1987-05-12

    申请号:US634727

    申请日:1984-07-26

    摘要: A guide tube flow restrictor for use on an upper guide tube housing support plate of a nuclear reactor, for guiding of a control rod drive shaft through an aperture in the support plate and restriction of flow of coolant therethrough, has an outer ring seatable on the support plate, the outer ring having a flange member from which there depends a plurality of flexible members, the flexible members having inwardly disposed deflectors thereon, and extending through the bore of the outer ring and the aperture of the support plate. An axially insertable sleeve, upon insertion into the outer ring, between the flexible members, contacts the deflectors thereon to radially force the flexible members outwardly to secure the same with the walls of the aperture of the support plate. Baffles are provided on the flexible segments and additional locking members provided between the outer ring and inner sleeve. Shoulders on the outer ring prevent the accumulation of deposits or corrosive affects which could render difficult the disengagement of the outer ring and inner sleeve for replacement thereof.

    摘要翻译: 用于在核反应堆的上引导管外壳支撑板上使用的引导管流量限制器,用于通过支撑板中的孔引导控制杆驱动轴和限制冷却剂通过其中的流动限制器具有位于 所述外环具有凸缘构件,所述外环从所述凸缘构件延伸,所述凸缘构件从所述凸缘构件上延伸出多个柔性构件,所述柔性构件在其上具有向内设置的偏转器,并且延伸穿过所述外圈的所述孔和所述支撑板的孔。 可轴向插入的套筒在插入到外环中时在柔性构件之间接触其上的偏转器,以径向地将柔性构件向外压力以将其固定在支撑板的孔的壁上。 挡板设置在柔性段上,并且设置在外圈和内套筒之间的附加锁定构件。 外环上的肩部防止沉积物的积聚或腐蚀性影响,这可能使得外环和内套筒脱离难以更换。

    Self-adjustable supplemental support system for a cylindrical container
in a housing
    4.
    发明授权
    Self-adjustable supplemental support system for a cylindrical container in a housing 失效
    用于外壳中的圆柱形容器的自调节补充支撑系统

    公开(公告)号:US4714228A

    公开(公告)日:1987-12-22

    申请号:US10505

    申请日:1987-01-30

    IPC分类号: B65D90/12 G21F5/14 F16M13/00

    CPC分类号: G21F5/14

    摘要: A self-adjustable supplementary support system for a cylindrical container coaxially disposed in a cylindrical housing by upper flanged supports has a plurality of outwardly extending bracket units on the external surface of the container which coact with inwardly extending resiliently outwardly extending bracket units on the inner wall of the cylindrical housing. The bracket units have flanges which form a concave surface that seats on support bars, attached by links to torsion bars that are secured to ring segments annularly spaced about the inner wall of the cylindrical housing and the bracket units and support bars coact with each other to radially position and support the container in the housing during movement of the two components from a vertical to a horizontal position, and during transportation of the same.

    Stirrup-type support structure for nuclear power plant pressurizer valves
    5.
    发明授权
    Stirrup-type support structure for nuclear power plant pressurizer valves 失效
    用于核电站加压阀的镫形支撑结构

    公开(公告)号:US4629601A

    公开(公告)日:1986-12-16

    申请号:US569073

    申请日:1984-01-09

    CPC分类号: G21C13/024 G21C1/09 Y02E30/40

    摘要: A support structure for supporting a pressurizer safety and relief valve system above a pressurizer vessel comprises a ring girder which surrounds the pressurizer vessel wall and is supported on pairs of lugs spaced about the pressurizer wall. The ring girder supports columns for the system at locations spaced from the lugs, and support means in the form of frames distribute the load on the lugs. The frames have upper and lower bars and outer vertical bars, with spaced inner vertical bars. Biasing means are provided to attach the frames to the lugs and distribute the forces, and a projection on the ring girder fits into a groove of a support bar on the upper bar of the frame.

    摘要翻译: 用于支撑加压器容器上方的加压器安全和安全阀系统的支撑结构包括围绕加压器容器壁的环形梁,并且支撑在围绕加压器壁间隔开的成对的凸耳上。 环形梁在与凸耳间隔开的位置处支撑系统的柱,并且框架形式的支撑装置将负载分配在凸耳上。 框架具有上下杆和外垂直杆,具有间隔的内垂直杆。 提供偏置装置以将框架附接到凸耳并分布力,并且环梁上的突起装配到框架的上杆上的支撑杆的凹槽中。

    Shipping device for heater unit assembly
    6.
    发明授权
    Shipping device for heater unit assembly 失效
    用于加热器组件的运输装置

    公开(公告)号:US5058762A

    公开(公告)日:1991-10-22

    申请号:US368498

    申请日:1989-06-19

    IPC分类号: G21C19/02 G21F5/14

    CPC分类号: G21F5/14

    摘要: A shipping device for a heater unit assembly (23), the heater unit assembly (23) including a cylindrical wall (25) and a top plate (31) secured to the cylindrical wall (25) and having a flange portion which projects radially beyond the outer surface of the cylindrical wall (25), and the shipping device including: a cylindrical container (3) having a closed bottom (13); a support member (47) secured to the container (3) and having an inwardly directed flange for supporting the flange portion of the top plate (31); a supplemental supporting system (1) for positioning the heater unit assembly (23) in the container (3) at a spaced relation from the inner surface and bottom wall (13) of the container (3); a cover (15) for closing the top of the container (3); and a container supporting structure (5,7,8) supporting the container (3) in a manner to permit the container (3) to be moved, relative to the supporting structure (5,7,8 ), between a vertical position for loading and unloading the assembly (23) and a horizontal position for transport of the assembly (23). A seal (57) is interposed between the container (3) and the cover (15) for sealing the interior of the container (3) from the environment. An abutment member (41) is mounted on the container supporting structure (5,7,8) for supporting the container bottom (13), when the container (3) is in the vertical position, to prevent the container (3) from moving past the vertical position in the direction away from the horizontal position, and a retainer member (55) is secured within the cover (15) for retaining the assembly top plate (31) in contact with the support member (47) when the cover (15) closes the top of the container (3).

    High pressure thimble/guide tube seal fitting with built-in low pressure
seal especially suitable for facilitated and more efficient nuclear
reactor refueling service
    7.
    发明授权
    High pressure thimble/guide tube seal fitting with built-in low pressure seal especially suitable for facilitated and more efficient nuclear reactor refueling service 失效
    高压套管/导管密封配件,内置低压密封,特别适用于促进和更有效的核反应堆加油服务

    公开(公告)号:US4996018A

    公开(公告)日:1991-02-26

    申请号:US340187

    申请日:1989-04-19

    CPC分类号: G21C17/108

    摘要: A HP/LP seal arrangement is provided for a guide tube and thimble extending outwardly from the core of a nuclear reactor to a seal table where the guide tube is welded to the seal table to provide a high pressure seal relative thereto. A tubular seal fitting is disposed in alignment with the guide tube with the thimble extending therethrough on the low pressure side of the seal table.A first high pressure seal couples one end of the fitting to an end of the guide tube to prevent leakage from within the guide tube. Inwardly facing threading is disposed adjacent the other and outer end of the seal fitting. A nut is disposed about the thimble and it is provided with outwardly facing threading in mating engagement with the fitting threading.The fitting has a seal seat spaced longitudinally inwardly from the threading and facing the fitting outer end and extending annularly about the inner surface of the fitting. A deformable ring seal is integral with the nut and is disposed about the thimble and between the nut body and the fitting seal seat. The ring seal has respective sealing surfaces in engagement with the radially outwardly facing surface of the thimble, the radially inwardly facing surface of the fitting and the fitting seal seat to provide a low pressure seal between the fitting and the thimble. A second releasable high pressure seal couples the thimble to the outer end portion of the guide tube.

    Reactor vessel annealing system
    8.
    发明授权
    Reactor vessel annealing system 失效
    反应器容器退火系统

    公开(公告)号:US5025129A

    公开(公告)日:1991-06-18

    申请号:US368456

    申请日:1989-06-19

    CPC分类号: G21C13/087 B60P3/14 Y02E30/40

    摘要: A system for annealing a vessel (14) in situ by heating the vessel (14) to a defined temperature, composed of: an electrically operated heater assembly (10) insertable into the vessel (14) for heating the vessel (14) to the defined temperature; temperature monitoring components positioned relative to the heater assembly (10) for monitoring the temperature of the vessel (14); a controllable electric power supply unit (32-60) for supplying electric power required by the heater assembly (10); a control unit (80-86) for controlling the power supplied by the power supply unit (32-60); a first vehicle (2) containing the power supply unit (32-60); a second vehicle (4) containing the control unit (80-86); power conductors (18,22) connectable between the power supply unit (32-60) and the heater unit (10) for delivering the power supplied by the power supply unit (32-60) to the heater assembly (10); signal conductors (20,24) connectable between the temperature monitoring components and the control unit (80-86) for delivering temperature indicating signals from the temperature monitoring components to the control unit (80-86); and control conductors (8) connectable between the control unit (80-86) and the power supply unit (32-60) for delivering to the power supply unit (32-60) control signals for controlling the level of power supplied by the power supply unit (32-60) to the heater assembly (10).

    Thermal insulation of nuclear reactor
    9.
    发明授权
    Thermal insulation of nuclear reactor 失效
    核反应堆隔热

    公开(公告)号:US4797247A

    公开(公告)日:1989-01-10

    申请号:US510491

    申请日:1983-07-05

    IPC分类号: G21C11/08 G21C11/00 G21C11/02

    摘要: A nuclear reactor having a remotely removable and replaceable thermal insulating shield for the head. Access permitting removal and replacement of the head is thus afforded.The thermal insulating shield includes a vertical frame of insulating material of polygonal transverse cross section encircling the head. A top panel of insulating material is mounted on the top of the frame pivotal by remote actuation between a horizontal position and a retracted position which may be vertical. In the horizontal position, the panels mate to provide thermal shielding for the head.

    摘要翻译: 一个核反应堆具有用于头部的可远程拆卸的绝热护罩。 因此提供允许头部移除和更换的通道。 绝热护罩包括围绕头部的多边形横截面的绝缘材料的垂直框架。 绝缘材料的顶板安装在框架的顶部上,通过在水平位置和可以是垂直的缩回位置之间的远程致动来枢转。 在水平位置,面板配合为头部提供热屏蔽。

    Swinging support for nuclear power plant pressurizer valves
    10.
    发明授权
    Swinging support for nuclear power plant pressurizer valves 失效
    摇摆支撑核电站加压阀

    公开(公告)号:US5024804A

    公开(公告)日:1991-06-18

    申请号:US383392

    申请日:1989-07-21

    IPC分类号: G21D1/00 G21C1/09

    CPC分类号: G21C1/09 Y02E30/40

    摘要: A support system is provided for a pressurizer relief and safety valve system in a nuclear power plant. The pressurizer has a generally cylindrical vessel wall topped with a dome-like member. The valve system includes a manifold generally located above and extending about the periphery of the vessel wall of the pressurizer.The valve support system comprises a plurality of paired lug members that extend outwardly from and are secured to the vessel wall at points spaced around the wall periphery. V-shaped columnar supports extend vertically upward from each of the lug pairs to the valve system manifold.A structural pin extends in the horizontal direction to support a base portion of each of the columnar supports relative to the associated lug pair. Disengageable locking clamps secure the pin to the lugs. A pair of diagonal columns extend upwardly in a V-shape from the support base portion to the manifold. A crossbar connects the diagonal columns at the top of each columnar support.Three collars units are secured to and project downwardly from the manifold for securance of the manifold to the crossbars of the columnar supports.When the pin locking clamps are disengaged to enable pin removal, the associated columnar support can be pivoted about its upper crossbar and swung outwardly from the vessel.