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1. 发明授权

US5053189A System providing improved guidance support with restricted coolant flow for control rods in the upper head plenum of a nuclear reactor 失效
标题翻译：系统提供改进的指导支持与限制性冷却液流量控制核在核反应堆的上层头
公开(公告)号：US5053189A
公开(公告)日：1991-10-01
申请号：US422261
申请日：1989-10-16
申请人： James R. Chrise , James A. Rex , David E. Boyle , Richard E. Schwirian
发明人： James R. Chrise , James A. Rex , David E. Boyle , Richard E. Schwirian
IPC分类号： G21C7/14 , G21C5/02 , G21C7/08
CPC分类号： G21C5/02 , G21C7/08 , G21Y2002/101 , G21Y2004/30 , G21Y2004/302 , Y02E30/39
摘要： A new system is provided for control rod guidance support with wear mitigating features in a nuclear reactor pressure vessel.The upper guide tube and the lower guide tube structures house the control rod when it is withdrawn from the fuel core.The upper guide tube has a top enclosure plate with a drive rod opening therethrough sized to provide a predetermined clearance space between the drive rod and the top enclosure plate and to direct coolant flow between the upper and outlet plenums and through the guide tube assembly to allow transmittal of upper plenum bypass cooling flow to the outlet plenum.Structure is provided for restricting coolant flow through the top plate clearance space to reduce control rod wear. A coupler secures the drive and control rods in end-to-end relation within the guide tube assembly. The coupler is located just below the top guide tube enclosure plate with the control rod fully withdrawn. The coolant restricting structure includes a flow restricting sleeve secured to the coupler and extending upwardly over the drive rod through the top guide tube enclosure plate. A flow restrictor is located above and secured to the top guide tube enclosure plate, and it has an upper portion disposed about and spaced from the flow restricting sleeve to provide a flow gap having a flow area substantially equal to the clearance space. The flow restrictor is otherwise structured to provide at least one contraction-expansion loss above the top guide tube plate for guide tube coolant flow through the flow gap.

2. 发明授权

US6055288A Nuclear reactor vessel 失效
标题翻译：核反应堆容器
公开(公告)号：US6055288A
公开(公告)日：2000-04-25
申请号：US122288
申请日：1998-07-24
申请人： Richard E. Schwirian
发明人： Richard E. Schwirian
IPC分类号： G21C5/06 , G21C5/02 , G21C13/02 , G21C15/02 , G21C15/10
CPC分类号： G21C13/02 , G21C5/02 , G21Y2002/104 , G21Y2002/303 , G21Y2002/40 , G21Y2004/301 , G21Y2004/50 , Y02E30/40
摘要： A nuclear reactor vessel has a baffle-barrel assembly for supporting the fuel assemblies in its core region and guiding coolant flowing through the core region when the reactor vessel is in service. The baffle assembly includes a baffle plate fastened to a former plate by a bolt. The baffle plate has a countersunk hole extending to a smaller diameter baffle plate hole. The former plate has a bolt hole aligned with the baffle plate hole. The bolt has a head portion disposed in the countersunk hole and a shank extending from the undersurface of the head portion into the aligned bolt holes and threadedly engaged with the former plate. A hole or slot extending through or along the bolt head and externally of the shank is formed in the bolt head itself or between the bolt head and the baffle plate for flowing coolant past the undersurface of the bolt head and the crevice it forms with the baffle plate so that steam which may form under the bolt head will be readily vented, deposited particulates from stagnant coolant and precipitates from the steam will be washed from the underside of the bolt head and the adjacent crevice, and the bolt head will be cooled. Because the shank does not have an axial bore or other passageway for coolant flow, the shank can be readily untrasonically tested and its strength is not compromised.Operational reactor vessels may be backfit without having to remove and disassemble the baffle assemblies.
摘要翻译：核反应堆容器具有挡板筒组件，用于在燃料组件处于其核心区域时支撑燃料组件，并且当反应堆容器处于使用状态时引导冷却剂流过核心区域。挡板组件包括通过螺栓紧固到前板的挡板。挡板具有延伸到较小直径的挡板孔的埋头孔。前板具有与挡板孔对准的螺栓孔。螺栓具有设置在埋头孔中的头部部分和从头部部分的下表面延伸到对准的螺栓孔中并与前板螺纹接合的柄部。在螺栓头本身中或螺栓头部和挡板之间形成有延伸穿过螺栓头部或沿着螺栓头部并在柄部外部延伸的孔或狭槽，用于使冷却剂流过螺栓头的下表面，并与挡板形成缝隙使得可以容易地排出可能形成在螺栓头下面的蒸汽，从停滞的冷却剂沉淀的微粒和来自蒸汽的沉淀物将从螺栓头和相邻缝隙的下侧洗涤，螺栓头将被冷却。因为柄不具有用于冷却剂流动的轴向孔或其它通道，所以可以容易地进行未经试验的柄，并且其强度不受影响。操作反应堆容器可以是后备式的，而不必拆卸和拆卸挡板组件。

3. 发明授权

US5553107A Pressurized water reactor vessel with slotted support columns 失效
标题翻译：具有开槽支撑柱的加压水反应堆容器
公开(公告)号：US5553107A
公开(公告)日：1996-09-03
申请号：US380785
申请日：1995-01-30
申请人： Richard E. Schwirian , Theo van de Venne
发明人： Richard E. Schwirian , Theo van de Venne
IPC分类号： G21C13/00 , G21C15/02 , G21C1/04
CPC分类号： G21C15/02 , G21Y2002/204 , G21Y2004/302 , Y02E30/32
摘要： A pressurized water nuclear reactor pressure vessel has an upper core support plate with passageways for the passage of coolant, an upper support plate above the upper core support plate, and peripheral hollow support columns extending upwardly above the passageways in the upper core support plate for supporting the upper support plate above the upper core support plate and for guiding coolant from the passageways into the plenum. Each peripheral support column has a peripherally slotted upper portion for guiding the coolant in the peripheral support column into the plenum and an unslotted lower portion.
摘要翻译：加压水核反应堆压力容器具有上芯体支撑板，其具有用于冷却剂通过的通道，在上芯支撑板上方的上支撑板和在上芯支撑板中的通道上方向上延伸的外周中空支撑柱，用于支撑上支撑板在上芯支撑板上方，用于将冷却剂从通道引导进入通风室。每个周边支撑柱具有周向开槽的上部部分，用于将周边支撑柱中的冷却剂引导到通风室中，以及未封闭的下部。

4. 发明授权

US09305668B2 Pressurized water reactor flow skirt apparatus 有权
标题翻译：加压水反应器流动裙装置
公开(公告)号：US09305668B2
公开(公告)日：2016-04-05
申请号：US12027341
申请日：2008-02-07
申请人： John F. Kielb , Richard E. Schwirian , Naugab E. Lee , David R. Forsyth
发明人： John F. Kielb , Richard E. Schwirian , Naugab E. Lee , David R. Forsyth
IPC分类号： G21C15/243
CPC分类号： G21C15/243 , G21C1/086 , G21C15/02 , Y02E30/32
摘要： A pressurized water reactor vessel having a flow skirt formed from a perforated cylinder structure supported in the lower reactor vessel head at the outlet of the downcomer annulus, that channels the coolant flow through flow holes in the wall of the cylinder structure. The flow skirt is supported at a plurality of circumferentially spaced locations on the lower reactor vessel head that are not equally spaced or vertically aligned with the core barrel attachment points, and the flow skirt employs a unique arrangement of hole patterns that assure a substantially balanced pressure and flow of the coolant over the entire underside of the lower core support plate.
摘要翻译：一种加压水反应器容器，其具有由穿孔的气缸结构形成的流动裙部，所述流动裙部支撑在降液管环的出口处的下部反应器容器头部中，其将冷却剂流通过气缸结构的壁中的流动孔。流动裙部在下反应器容器头上的多个周向间隔开的位置处被支撑，所述位置不与芯筒附接点等间隔或垂直对准，并且流动裙部采用独特的孔图案布置，其确保基本平衡的压力并且冷却剂在下芯支撑板的整个下侧上的流动。

5. 发明申请

US20150310943A1 PRESSURIZED WATER REACTOR FLOW SKIRT APPARATUS 有权
标题翻译：加压水反应器流动装置
公开(公告)号：US20150310943A1
公开(公告)日：2015-10-29
申请号：US12027341
申请日：2008-02-07
申请人： John F. Kielb , Richard E. Schwirian , Naugab E. Lee , David R. Forsyth
发明人： John F. Kielb , Richard E. Schwirian , Naugab E. Lee , David R. Forsyth
IPC分类号： G21C15/02 , G21C1/08
CPC分类号： G21C15/243 , G21C1/086 , G21C15/02 , Y02E30/32
摘要： A pressurized water reactor vessel having a flow skirt formed from a perforated cylinder structure supported in the lower reactor vessel head at the outlet of the downcomer annulus, that channels the coolant flow through flow holes in the wall of the cylinder structure. The flow skirt is supported at a plurality of circumferentially spaced locations on the lower reactor vessel head that are not equally spaced or vertically aligned with the core barrel attachment points, and the flow skirt employs a unique arrangement of hole patterns that assure a substantially balanced pressure and flow of the coolant over the entire underside of the lower core support plate.
摘要翻译：一种加压水反应器容器，其具有由穿孔的气缸结构形成的流动裙部，所述流动裙部支撑在降液管环的出口处的下部反应器容器头部中，其将冷却剂流通过气缸结构的壁中的流动孔。流动裙部在下反应器容器头上的多个周向间隔开的位置处被支撑，所述位置不与芯筒附接点等间隔或垂直对准，并且流动裙部采用独特的孔图案布置，其确保基本平衡的压力并且冷却剂在下芯支撑板的整个下侧上的流动。

6. 发明授权

US4941159A Low neutron fluence nuclear reactor internals 失效
标题翻译：低中子能量核反应堆内部
公开(公告)号：US4941159A
公开(公告)日：1990-07-10
申请号：US257917
申请日：1988-10-14
申请人： Richard E. Schwirian , Vincent A. Perone
发明人： Richard E. Schwirian , Vincent A. Perone
IPC分类号： G21C5/12 , G21C11/00 , G21C11/06
CPC分类号： G21C11/06 , Y02E30/40 , Y10S376/904
摘要： A new design for nuclear reactor internals resulting in reduced fast neutron leakage to the reactor vessel. The first step of the two-stage process reflects high energy or fast neutrons back into the core, by placement of a reflector made of tungsten, stainless steel, or zirconium oxide in the baffle barrel region. The second stage involves reducing the energy of any fast neutrons that may pass through the reflector by the use of a neutron energy reducer, composed of an hydrogenous material such as titanium hydride, surrounding the core barrel in the areas of high neutron flux. In addition to protecting the reactor vessel wall and increasing the operating life of a nuclear reactor, the neutron economy in the core, and hence the operating efficiency of a nuclear power plant, are significantly increased.

7. 发明授权

US4717529A Thimble guide assembly 失效
标题翻译：顶针导向组件
公开(公告)号：US4717529A
公开(公告)日：1988-01-05
申请号：US817703
申请日：1986-01-10
申请人： Daniel Merkovsky , Richard E. Schwirian
发明人： Daniel Merkovsky , Richard E. Schwirian
IPC分类号： G21C17/10 , G21C17/108
CPC分类号： G21C17/108
摘要： A thimble guide assembly for use in a nuclear reactor includes a lower element which can be screwed into a bore in a core plate and an upper element which can be screwed to the lower element. One of the screw-connections is right-handed while the other is left-handed. The length of the upper element is selected so that the exposed portion of a thimble tube, which extends through the thimble guide assembly and into a fuel assembly above it, is relatively modest, thereby minimizing the turbulence to which the thimble tube is exposed. The lower element of the thimble guide assembly is provided with a sleeve portion which extends through the bore in the core plate, and the tip of the upper element terminates in a planar, annular lip. Both elements are provided with surfaces for engagement by wrenches or other tools. The lower element has annular grooves for engagement by a lower spring clip which is welded to the core plate and an upper spring clip which is welded to the upper element.
摘要翻译：用于核反应堆的套管引导组件包括可以拧入芯板中的孔中的下部元件和可以被拧入下部元件的上部元件。其中一个螺丝连接是右撇子，而另一个是左撇子。选择上部元件的长度，使得延伸穿过套管引导组件并且位于其上方的燃料组件中的套管的暴露部分相对适中，从而使套管暴露于的湍流最小化。套管引导组件的下部元件设置有套筒部分，其延伸穿过芯板中的孔，并且上部元件的尖端终止于平坦的环形唇缘。两个元件都设有用于通过扳手或其他工具接合的表面。下元件具有环形槽，用于通过焊接到芯板的下弹簧夹与焊接到上元件的上弹簧夹接合。

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