公开(公告)号：US5737378A

公开(公告)日：1998-04-07

申请号：US669879

申请日：1996-06-21

申请人： Gary J. Ballas ,  Alex Blair Fife ,  Israel Ganz

发明人： Gary J. Ballas ,  Alex Blair Fife ,  Israel Ganz

IPC分类号： G21C5/10 ,  G21C13/02 ,  G21C13/00

CPC分类号： G21C13/02 ,  G21C5/10 ,  G21Y2002/104 ,  G21Y2002/206 ,  G21Y2002/303 ,  G21Y2002/401 ,  G21Y2004/301 ,  G21Y2004/304 ,  G21Y2004/50 ,  Y02E30/40

摘要： A shroud for a nuclear reactor is described. In one embodiment, the shroud includes first and second shroud sections, and each shroud section includes a substantially cylindrical main body having a first end and a second end. With respect to each shroud section, a flange is located at the main body first end, and the flange has a plurality of bolt openings therein and a plurality of scalloped regions. The first shroud section is welded to the second shroud section, and at least some of the bolt openings in the first shroud section flange align with respective bolt openings in the second shroud section flange. In the event that the onset of inter-granular stress corrosion cracking is ever detected in the weld between the shroud section, bolts are inserted through bolt openings in the first shroud section flange and through aligned bolt openings the second shroud section flange. Each bolt, in one embodiment, has a shank section and first and second threaded end sections. Nuts are threadedly engaged to the threaded end sections and tightened against the respective flanges.

摘要翻译： 描述了用于核反应堆的护罩。 在一个实施例中，护罩包括第一和第二护罩部分，并且每个护罩部分包括具有第一端和第二端的基本上圆柱形的主体。 对于每个护罩部分，凸缘位于主体第一端，并且凸缘在其中具有多个螺栓开口和多个扇形区域。 第一护罩部分焊接到第二护罩部分，并且第一护罩部分凸缘中的至少一些螺栓开口与第二护罩部分凸缘中的相应的螺栓孔对准。 如果在护罩部分之间的焊缝中检测到颗粒间应力腐蚀开裂，则螺栓通过第一护罩部分凸缘中的螺栓孔插入并通过对准的螺栓孔插入第二护罩部分凸缘。 在一个实施例中，每个螺栓具有柄部分和第一和第二螺纹端部部分。 螺母螺纹接合到螺纹端部并且紧固在相应的凸缘上。

公开(公告)号：US5721758A

公开(公告)日：1998-02-24

申请号：US608635

申请日：1996-02-29

申请人： Alex Blair Fife ,  Gary J. Ballas

发明人： Alex Blair Fife ,  Gary J. Ballas

IPC分类号： G21C13/00 ,  G21C13/02 ,  G21C13/032

CPC分类号： G21C13/02 ,  G21C13/032 ,  Y02E30/40

摘要： A bottom head to shell junction assembly which, in one embodiment, includes an annular forging having an integrally formed pump deck and shroud support is described. In the one embodiment, the annular forging also includes a top, cylindrical shaped end configured to be welded to one end of the pressure vessel cylindrical shell and a bottom, conical shaped end configured to be welded to the disk shaped bottom head. Reactor internal pump nozzles also are integrally formed in the annular forging. The nozzles do not include any internal or external projections. Stubs are formed in each nozzle opening to facilitate welding a pump housing to the forging. Also, an upper portion of each nozzle opening is configured to receive a portion of a diffuser coupled to a pump shaft which extends through the nozzle opening. Diffuser openings are formed in the integral pump deck to provide additional support for the pump impellers. The diffuser opening is sized so that a pump impeller can extend at least partially therethrough. The pump impeller is connected to the pump shaft which extends through the nozzle opening.

摘要翻译： 在一个实施例中，底部头部到壳体接合组件包括具有整体形成的泵板和护罩支撑件的环形锻件。 在一个实施例中，环形锻造还包括顶部圆柱形端部，其被构造成焊接到压力容器圆柱形壳体的一端，并且底部圆锥形端部构造成焊接到盘形底部头部。 反应器内部泵喷嘴也一体地形成在环形锻造中。 喷嘴不包括任何内部或外部突起。 在每个喷嘴开口中形成桩，以便于将泵壳体焊接到锻造。 此外，每个喷嘴开口的上部被构造成容纳连接到延伸穿过喷嘴开口的泵轴的扩散器的一部分。 扩散器开口形成在一体式泵板中，为泵叶轮提供额外的支撑。 扩散器开口的尺寸使得泵叶轮能够至少部分地延伸通过其中。 泵叶轮连接到延伸穿过喷嘴开口的泵轴。

公开(公告)号：US5802125A

公开(公告)日：1998-09-01

申请号：US639964

申请日：1996-04-29

申请人： Alex Blair Fife

发明人： Alex Blair Fife

IPC分类号： G21C13/00 ,  G21C13/036 ,  B65D53/00

CPC分类号： G21C13/036 ,  G21Y2002/202 ,  G21Y2002/302 ,  G21Y2004/301 ,  G21Y2004/503 ,  Y02E30/40

摘要： A bottom head dome assembly which includes, in one embodiment, a bottom head dome and a liner configured to be positioned proximate the bottom head dome is described. The bottom head dome has a plurality of openings extending therethrough. The liner also has a plurality of openings extending therethrough, and each liner opening aligns with a respective bottom head dome opening. A seal is formed, such as by welding, between the liner and the bottom head dome to resist entry of water between the liner and the bottom head dome at the edge of the liner. In the one embodiment, a plurality of stub tubes are secured to the liner. Each stub tube has a bore extending therethrough, and each stub tube bore is coaxially aligned with a respective liner opening. A seat portion is formed by each liner opening for receiving a portion of the respective stub tube. The assembly also includes a plurality of support shims positioned between the bottom head dome and the liner for supporting the liner. In one embodiment, each support shim includes a support stub having a bore therethrough, and each support stub bore aligns with a respective bottom head dome opening.

摘要翻译： 在一个实施例中，包括底部头部圆顶和被配置为邻近底部顶部圆顶定位的衬套的底部顶部圆顶组件被描述。 底部顶部圆顶具有延伸穿过其中的多个开口。 衬里还具有延伸穿过其中的多个开口，并且每个衬垫开口与相应的底部顶部圆顶开口对齐。 密封件例如通过焊接形成在衬垫和底部顶部圆顶之间，以防止衬垫和衬套的边缘处的底部顶部圆顶之间的水进入。 在一个实施例中，多个短管固定到衬套上。 每个短管具有延伸穿过其中的孔，并且每个短管管孔与相应的衬套开口同轴对齐。 座部分由每个衬套开口形成，用于容纳相应短管的一部分。 组件还包括多个支撑垫片，其位于底部顶部圆顶和衬垫之间，用于支撑衬套。 在一个实施例中，每个支撑垫片包括具有穿过其中的孔的支撑短柱，并且每个支撑短柱孔与相应的底部顶部圆顶开口对准。