Boiling water reactor core, boiling water reactor, and method of operating boiling water reactor
    22.
    发明授权
    Boiling water reactor core, boiling water reactor, and method of operating boiling water reactor 有权
    沸水反应堆核心,沸水反应堆和沸水反应堆操作方法

    公开(公告)号:US06337892B1

    公开(公告)日:2002-01-08

    申请号:US09655882

    申请日:2000-09-06

    Abstract: In each of a number of fuel assemblies loaded in a core of a boiling water reactor, a fuel holding portion of a lower tie plate holds lower end portions a plurality of fuel rods and at least one water rod. The water rod includes a rising pipe opened to a space in the lower tie plate below the fuel holding portion and introducing upward a coolant introduced to the rising pipe, and a falling pipe communicated with the rising pipe and introducing downward the coolant introduced through the rising pipe. The falling pipe has a coolant outlet opened to a second coolant passage defined between the fuel rods above the fuel holding portion. The rising passage is filled with the coolant during a period of rated power operation of the reactor, and a surface of the coolant is formed in the rising pipe during a period of non-rated power operation in which a flow rate of the coolant supplied to the fuel assemblies is lower than that during the period of rated power operation. As a result, influences of a transient event during the rated power operation can be suppressed, and the nuclear thermal-hydraulic stability of the core during the non-rated power operation can be improved.

    Abstract translation: 在装载在沸水反应堆的核心中的多个燃料组件的每一个中,下连接板的燃料保持部分将下端部分保持多个燃料棒和至少一个水杆。 水杆包括向燃料保持部分下方的下连接板的空间开口的上升管,向上引入引入上升管的冷却剂,以及与上升管连通的下降管,向下引入通过上升引入的冷却剂 管。 下降管具有冷却剂出口,该冷却剂出口通向限定在燃料保持部分上方的燃料棒之间的第二冷却剂通道。 在反应堆的额定功率运行期间,上升通道充满冷却剂,并且在非额定功率运行期间,在上升管中形成冷却剂的表面,其中供应到 燃油组件比额定功率运转时低。 结果,可以抑制在额定功率运行期间的瞬态事件的影响,并且可以提高在非额定功率运行期间的核的核热液压稳定性。

    Circularly polarized cross dipole antenna
    23.
    发明授权
    Circularly polarized cross dipole antenna 失效
    圆极化交叉偶极天线

    公开(公告)号:US6163306A

    公开(公告)日:2000-12-19

    申请号:US309773

    申请日:1999-05-11

    CPC classification number: H01Q21/26 H01Q1/38 H01Q9/285

    Abstract: A circularly polarized cross dipole antenna according to the present invention comprises a first L-shaped dipole antenna element including a first pair of strip conductors and a first bending portion and a second L-shaped dipole antenna element including a second pair of strip conductors and a second bending portion. The first L-shaped dipole antenna element is arranged in a first region of four regions delimited by crossing lines virtually set within a single plane and the second L-shaped dipole antenna element is arranged in a second region thereof which is diagonally opposite to the first region. The first bending portion and the second bending portion are close and opposite to each other such that the first and second L-shaped dipole antenna elements form a cross. The antenna also comprises a parallel-twin-line feeder extended from the first and second bending portions and provided so as to feed power within the single plane.

    Abstract translation: 根据本发明的圆极化交叉偶极天线包括:第一L形偶极天线元件,包括第一对带状导体和第一弯曲部分和第二L形偶极天线元件,第二L形偶极天线元件包括第二对带状导体和 第二弯曲部。 第一L形偶极天线元件被布置在由虚拟设置在单个平面内的交叉线限定的四个区域的第一区域中,并且第二L形偶极天线元件布置在与第一L形偶极天线元件的对角线相对的第二区域中 地区。 第一弯曲部分和第二弯曲部分彼此靠近并相对,使得第一和第二L形偶极天线元件形成十字。 天线还包括从第一和第二弯曲部分延伸并且设置成在单个平面内馈送功率的平行双线馈线。

    Fuel assembly
    24.
    发明授权

    公开(公告)号:US6061416A

    公开(公告)日:2000-05-09

    申请号:US22678

    申请日:1998-02-12

    CPC classification number: G21C3/328 Y02E30/38

    Abstract: Each of short-length fuel rods 3 is arranged at a position other than in 3.times.3 corner regions 6 to 9 in such a manner as not to be simultaneously adjacent to a water rod 5 and others of the short-sized fuel rods. Gd fuel rods 4 are arranged at positions excluding the outer periphery, and the number of those of the Gd fuel rods 4 adjacent to the short-length fuel rods 3 is one-half or less the total number of the Gd fuel rods. At a transverse cross-section of a region upward from upper ends of the short-sized fuel rods 3, the amount of burnable poison contained in a polygonal region 10 whose vertexes are located at centers of those of the first fuel rods 3 arranged at the outermost layer is smaller than the amount of burnable poison outside the region 10. With this configuration, a critical power can be improved in consideration of both a distribution of the flow of coolant and a distribution of a thermal power in the fuel assembly.

    Polyphenylene ether resin composition
    26.
    发明授权
    Polyphenylene ether resin composition 失效
    聚苯醚树脂组合物

    公开(公告)号:US5717014A

    公开(公告)日:1998-02-10

    申请号:US737596

    申请日:1996-11-25

    Abstract: A polyphenylene ether resin composition containing the following Components (A) to (D) according at the following formulation ratio. (A) 50 to 99.5 parts by weight of a polyphenylene ether (B) 0.5 to 50 parts by weight of a partially hydrogenated aromatic alkenyl compound-conjugated diene block copolymer having a hydroxy group and based on 100 parts by weight of the above resin composition, (C) 0 to 950 parts by weight of a thermoplastic resin and (D) 0 to 10 parts by weight of a phosphorous acid triester.

    Abstract translation: PCT No.PCT / JP95 / 00960 Sec。 371日期:1996年11月25日 102(e)日期1996年11月25日PCT提交1995年5月19日PCT公布。 出版物WO95 / 32244 日期:1995年11月30日根据以下配比,含有以下成分(A)〜(D)的聚苯醚树脂组合物。 (A)50〜99.5重量份聚苯醚(B)0.5〜50重量份具有羟基的部分氢化芳香族链烯基化合物 - 共轭二烯嵌段共聚物,相对于上述树脂组合物100重量份 ,(C)0〜950重量份的热塑性树脂和(D)0〜10重量份的亚磷酸三酯。

    Thermal fuel level detector
    29.
    发明授权
    Thermal fuel level detector 失效
    燃油液位检测器

    公开(公告)号:US5022263A

    公开(公告)日:1991-06-11

    申请号:US362400

    申请日:1989-08-02

    CPC classification number: G01F23/246 G01F23/247

    Abstract: Provided is a fuel level detector for use in a fuel tank of an automobile or the like which can accurately detect a fuel level with a reduced power consumption exhibiting an improved reliability regardless of the ambient temperatures and the temperatures of liquid fuel in order to overcome the problems involved in a thermistor method and a metal wire method. A spontaneously heated sensing resistor having a high temperature resistance coefficient is formed on a substrate so as to detect a change in the resistance value due to cooling by heat of vaporization at a portion of the sensing resistor which is dipped in fuel as a differential output voltage. In order to prevent errors in the differential output voltage due to the correction of the ambient temperature in the fuel tank, a temperature compensating resistor is provided on the substrate.

    Magnetic recording member for automatic embroidering machine
    30.
    发明授权
    Magnetic recording member for automatic embroidering machine 失效
    磁记录机自动绣机

    公开(公告)号:US4408242A

    公开(公告)日:1983-10-04

    申请号:US302821

    申请日:1981-09-16

    CPC classification number: D05B21/00

    Abstract: A magnetically recorded program member for an embroidering machine which includes a plurality of data recording blocks containing control data for at least one of thread change, frame change and applying an applique cloths, the data recording blocks being arranged with non-recorded blocks interposed therebetween, and voice recording blocks having records based on the control data.

    Abstract translation: 一种用于刺绣机的磁记录程序构件,其包括多个数据记录块,所述多个数据记录块包含线程改变,帧改变和应用贴布中的至少一个的控制数据,所述数据记录块被布置有非记录块, 和具有基于控制数据的记录的语音记录块。

Patent Agency Ranking