公开(公告)号：US06671632B2

公开(公告)日：2003-12-30

申请号：US10146591

申请日：2002-05-14

申请人： Bettadapur Narayanarao Sridhar ,  John Joseph Lynch ,  Maharaj Krishen Kaul

发明人： Bettadapur Narayanarao Sridhar ,  John Joseph Lynch ,  Maharaj Krishen Kaul

IPC分类号： G06F1900

CPC分类号： G21C17/00 ,  G01N3/00 ,  G01N2203/0292 ,  G21D3/001 ,  G21Y2002/201 ,  G21Y2002/204 ,  G21Y2004/40 ,  Y02E30/40

摘要： A method enables the resilience of a plurality of spring washers stacked in a series arrangement to be determined. The method comprises determining the potential energy for the series arrangement by integrating the product of the axial load applied to the series arrangement, the displacement of the series arrangement, and the number of spring washers stacked in the series arrangement, and solving at least two non-linear equations to determine the resilience of the spring washers stacked in the series arrangement.

摘要翻译： 一种方法能够确定以串联装置堆叠的多个弹簧垫圈的弹性。 该方法包括通过积分施加到串联装置的轴向载荷，串联装置的位移和堆叠在串联装置中的弹簧垫圈的数量的积分来确定串联装置的势能，并且求解至少两个非 - 以确定堆叠在串联装置中的弹簧垫圈的弹性。

公开(公告)号：US06907791B2

公开(公告)日：2005-06-21

申请号：US10280160

申请日：2002-10-25

申请人： Hwang Choe ,  Betty Jane Branlund ,  Bettadapur Narayanarao Sridhar

发明人： Hwang Choe ,  Betty Jane Branlund ,  Bettadapur Narayanarao Sridhar

IPC分类号： G01N3/02 ,  G01N3/32 ,  G01N3/00 ,  G01N11/00

CPC分类号： G01N3/32 ,  G01N2203/0212 ,  G01N2203/0222

摘要： A method for calculating a fatigue usage factor of a component in a nuclear reactor includes determining a flow scaling factor for each stress component of a stress cycle, applying the flow scaling factor to rapid cycling stress conditions, and performing a fatique evaluation by calculating a fatigue usage factor using the flow scaling factor. The flow scaling factor is a ratio of a temperature fluctuation ratio at a first reactor operating condition divided by a temperature fluctuation ratio at a second reactor operating condition. The temperature fluctuation ratio is defined as a ratio of the metal temperature range over the fluid temperature range.

摘要翻译： 一种用于计算核反应堆中的组分的疲劳使用因子的方法包括确定应力循环中每个应力分量的流量比例因子，将流量缩放因子应用于快速循环应力条件，以及通过计算疲劳进行疲劳评估 使用因子使用流量缩放因子。 流量比例系数是第一反应器运行条件下的温度波动比除以第二反应器运行条件下的温度波动比的比率。 温度波动比定义为金属温度范围在流体温度范围内的比率。

公开(公告)号：US06375130B1

公开(公告)日：2002-04-23

申请号：US09128286

申请日：1998-08-03

申请人： Grant Clark Jensen ,  Bettadapur Narayanarao Sridhar

发明人： Grant Clark Jensen ,  Bettadapur Narayanarao Sridhar

IPC分类号： F16L308

CPC分类号： G21C19/18 ,  G21C13/02 ,  G21Y2002/103 ,  G21Y2002/104 ,  G21Y2002/206 ,  G21Y2002/207 ,  G21Y2002/303 ,  G21Y2004/301 ,  G21Y2004/504 ,  Y02E30/40

摘要： A T-box clamp apparatus which applies compressive forces to a T-box in a boiling water nuclear reactor pressure vessel is described. The T-box clamp apparatus clamps to the T-box and distribution header pipes to hold the distribution headers in place and in contact with the T-box. The T-box clamp apparatus includes a first and a second of clamp assembly and a clamp strong-back assembly coupled to the first and second clamp assemblies. Each clamp assembly includes upper and lower clamp bodies that are coupled to a distribution header pipe. The strong-back assembly includes an upper and a lower strong-back body configured to engage the T-box, with the upper strong-back body coupled to the upper clamp bodies of the first and second clamp assemblies, and the lower strong-back body is coupled to the lower clamp bodies of the first and second clamp assemblies.

摘要翻译： 描述了在沸水核反应堆压力容器中向T形箱施加压缩力的T形箱夹紧装置。 T盒夹具装置夹在T型箱和分配集管上，以将配电箱固定在适当位置并与T型箱接触。 T形盒夹紧装置包括夹紧组件的第一和第二以及联接到第一和第二夹具组件的夹紧强靠组件。 每个夹具组件包括联接到分配集管的上和下夹具体。 强背组件包括构造成接合T形盒的上和下强身后部主体，其中上部强身主体联接到第一和第二夹具组件的上夹具本体，而下部强背部 主体联接到第一和第二夹具组件的下夹具体。