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    • 1. 发明申请
    • Flashlamp Drive Circuit
    • 闪光灯驱动电路
    • US20080067946A1
    • 2008-03-20
    • US11628417
    • 2005-05-20
    • Jan SimonsenMichael Kiernan
    • Jan SimonsenMichael Kiernan
    • H05B41/32
    • H05B41/32
    • A flashlamp drive circuit including a storage capacitor which is charged and selectively discharged in order to drive a flashlamp. A capacitor (116) is connected in parallel with each respective flashlamp (106) in a bank of flashlamps. Each capacitor (116) has a comparatively small capacitance so as to be capable of storing only a portion of the total energy pulse required to be delivered to the respective flashlamp (106). A controller, comprising a digital signal processor (118) and a microprocessor (120) is provided to control the operation of all of the flashlamps (106) in the bank via respective switch mechanisms (110). In use, each energy (or drive) pulse delivered to a flashlamp (106) is comprised of a plurality of smaller energy packets resulting from repeated charging and discharging of the respective capacitor (116). Thus, the shape and duration of the current pulses delivered to the flashlamp (106) is highly controllable and the size of the storage capacitor (116) required is significantly reduced relative to the prior art.
    • 一种闪光灯驱动电路,其包括对驱动闪光灯进行充电和选择性放电的存储电容器。 电容器(116)与闪光灯组中的每个相应的闪光灯(106)并联连接。 每个电容器116具有相对较小的电容,以便能够仅存储要传送到各个闪光灯(106)的总能量脉冲的一部分。 提供了包括数字信号处理器(118)和微处理器(120)的控制器,以经由相应的开关机构(110)来控制所述存储体中的所有闪光灯(106)的操作。 在使用中,传递到闪光灯(106)的每个能量(或驱动)脉冲由多个相应电容器(116)的反复充电和放电产生的较小的能量分组组成。 因此,传送到闪光灯(106)的电流脉冲的形状和持续时间是高度可控的,并且所需的存储电容器(116)的尺寸相对于现有技术显着降低。
    • 9. 发明申请
    • DEBRIS SHIELD FOR UPPER TIE PLATE IN A NUCLEAR FUEL BUNDLE AND METHOD FOR FILTERING DEBRIS
    • 核燃料组件中的上层板的破碎屏蔽和过滤器的方法
    • US20090060114A1
    • 2009-03-05
    • US11848414
    • 2007-08-31
    • Michael DeFilippisGerald A. LucianoDavid SmithMichael KiernanCarlton ClarkAndrew K. Langston
    • Michael DeFilippisGerald A. LucianoDavid SmithMichael KiernanCarlton ClarkAndrew K. Langston
    • G21C19/42
    • G21C3/3206G21C3/33G21C3/344Y02E30/40
    • A nuclear reactor fuel assembly including: an upper tie plate having apertures to receive and support fuel rods of a fuel bundle; the fuel bundle includes an array of the fuel rods mounted and housed in the walls of a channel, and a load bearing or non-load bearing debris shield may be mounted in the upper tie plate, wherein the debris shield is porous to prevent the passage of debris. The debris shield is mounted in the frame of the upper tie plate. The debris shield can be either a removable unit, or it can be attached as a permanent integrated structure within the upper tie plate. The upper tie plate frame is also porous, e.g., has small vertical openings to allow fluid to pass through the frame and block passage of debris. The openings in the frame increase the effective flow area of passages through the upper tie plate and thereby compensate or offset any flow restrictions due to the debris shield. Preventing debris falling into the fuel bundle is expected to assure the operational life of the fuel assembly by reducing the risk of fuel rod failure and premature discharge from the reactor core.
    • 一种核反应堆燃料组件,包括:上连接板,其具有用于接收和支撑燃料束的燃料棒的孔; 燃料束包括安装并容纳在通道的壁中的燃料棒的阵列,并且负载承载或非负载的碎屑屏蔽可以安装在上部连接板中,其中,碎屑屏蔽是多孔的,以防止通过 的碎片。 碎片屏蔽件安装在上连接板的框架中。 碎片屏蔽可以是可拆卸的单元,也可以作为永久的一体化结构连接在上连接板内。 上连接板框架也是多孔的,例如具有小的垂直开口,以允许流体通过框架并阻止碎片通过。 框架中的开口增加了通过上连接板的通道的有效流动面积,从而补偿或抵消了由于碎片屏蔽造成的任何流动限制。 通过减少燃料棒故障和从反应堆堆芯过早排放的危险,防止残留在燃料束中的碎屑预期将确保燃料组件的使用寿命。