公开(公告)号：US06188741B1

公开(公告)日：2001-02-13

申请号：US09130751

申请日：1998-08-07

申请人： Gary J. Ballas ,  Jack T. Matsumoto ,  Alex B. Fife

发明人： Gary J. Ballas ,  Jack T. Matsumoto ,  Alex B. Fife

IPC分类号： G21C1300

CPC分类号： G21C13/028 ,  G21C13/036 ,  G21Y2002/103 ,  G21Y2002/206 ,  G21Y2002/302 ,  G21Y2002/40 ,  G21Y2004/30 ,  Y02E30/40 ,  Y10T29/49826

摘要： An integral stub tube which simplifies the reactor pressure vessel fabrication process, provides a structural transition between the penetration and head, and facilitates future remote inspection of the attachment weld is described. In one embodiment, a stub tube is machined into the bottom head dome. Specifically, a penetration is formed in the bottom head dome by a bore having a stub tube portion. The stub tube portion has a cylindrical shape and a length of the stub tube portion is selected to provide a transition between a penetration housing and an adjacent portion of bottom head dome. The penetration housing extends through the penetration, in the dome. A weld attaches the stub tube portion to the penetration housing.

摘要翻译： 简化反应堆压力容器制造过程的整体短管提供了穿透和头部之间的结构转变，并且有助于将来对附着焊缝的远程检查。 在一个实施例中，短管被加工到底部顶部圆顶中。 具体地，通过具有短管部分的孔，在底部顶部圆顶中形成穿透。 短管部分具有圆柱形形状，并且短截线管部分的长度被选择为在穿透壳体和底部顶部圆顶的相邻部分之间提供过渡。 穿透壳体延伸穿过穹顶中的穿透。 焊缝将短截线管部分附接到穿透壳体。

公开(公告)号：US06163588A

公开(公告)日：2000-12-19

申请号：US219968

申请日：1998-12-23

申请人： Jack T. Matsumoto ,  Alex B. Fife ,  Gary J. Ballas

发明人： Jack T. Matsumoto ,  Alex B. Fife ,  Gary J. Ballas

IPC分类号： G21C1/08 ,  G21C5/10 ,  G21C17/02 ,  G21C17/032

CPC分类号： G21C5/10 ,  G21C1/08 ,  Y02E30/40

摘要： A modular differential pressure measuring system for a boiling water nuclear reactor pressure vessel is described. The modular pressure differential system includes a plurality of pressure lines having a plurality of pressure line sections. The system also includes a shroud having at least one replaceable shroud section. Each shroud section includes at least one pressure line section which is configured to connect to and disconnect from corresponding pressure line sections in adjacent shroud sections without welding. Additionally, the system includes a reactor bottom head petal section having a shroud support flange and a plurality of bores defining pressure line sections wherein at least one pressure line section of said bottom head petal is configured to couple with a corresponding pressure line section of an adjacent shroud section. The modular pressure system does not require cutting of the pressure lines or pressure line supports for replacement of the replaceable shroud sections. Additionally, the modular differential pressure system does not require welding of pressure lines and/or pressure line supports during installation of a replaceable shroud section.

摘要翻译： 描述了一种用于沸水核反应堆压力容器的模块化差压测量系统。 模块化压差系统包括具有多个压力线段的多个压力管线。 该系统还包括具有至少一个可替换的护罩部分的护罩。 每个护罩部分包括至少一个压力线段，其被构造成在没有焊接的情况下连接到相邻护罩部分中的相应压力管线部分并且与其断开。 另外，该系统包括反应器底部头部花瓣部分，其具有护罩支撑凸缘和限定压力线部分的多个孔，其中所述底部头花瓣的至少一个压力线部分被配置成与相邻的压力线的相应的压力线部分 护罩部分。 模块化压力系统不需要切割压力管线或压力管路支架来更换可更换的护罩部分。 此外，模块化差压系统在安装可更换的护罩部分期间不需要焊接压力管线和/或压力管路支撑。

公开(公告)号：US06910379B2

公开(公告)日：2005-06-28

申请号：US10696323

申请日：2003-10-29

申请人： Mark H. Eskridge ,  Gary J. Ballas

发明人： Mark H. Eskridge ,  Gary J. Ballas

IPC分类号： B81B3/00 ,  G01P15/08 ,  G01P15/125 ,  G01C19/00 ,  G01P15/00

CPC分类号： G01P15/0802 ,  B81B3/0062 ,  B81B2201/0235 ,  G01P15/125

摘要： A high aspect ratio microelectromechanical system device for measuring an applied force and having a suspension structure for compensating out-of-plane displacements of the device proof mass, wherein the device includes a frame; a proof mass coupled to the frame for in-plane motion along an axis of symmetry, the proof mass having first and second sets of spaced apart capacitor plates projected therefrom on each side of the axis of symmetry and oriented substantially crosswise to the axis of symmetry; and third and fourth sets of spaced apart capacitor plates oriented substantially crosswise to the axis of symmetry of the proof mass and intermeshed respectively with the first and second sets of capacitor plates, the third and fourth sets of capacitor plates being suspended for motion relative to the frame about respective first and second axes of motion oriented substantially parallel with the axis of symmetry of the proof mass.

摘要翻译： 一种高纵横比微机电系统装置，用于测量施加的力并具有用于补偿装置防止质量块的平面外位移的悬架结构，其中所述装置包括框架; 耦合到框架的用于沿着对称轴线进行平面内运动的检测质量块，所述检验质量块具有在对称轴线的每一侧上从其上突出的第一组和第二组间隔开的电容器板，并且基本上横向于对称轴 ; 以及第三组和第四组间隔开的电容器板，其基本上与检验质量体的对称轴线交叉定位，并与第一和第二组电容器板相互啮合，第三组和第四组电容器板相对于 框架关于相应的第一和第二运动轴线基本上平行于检验质量块的对称轴定位。

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。