会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 3. 发明授权
    • Fuel assembly and fuel spacer
    • 燃油组件和燃油间隔器
    • US5112571A
    • 1992-05-12
    • US510192
    • 1990-04-17
    • Akihito OriiOsamu YokomizoYasuhiro MasuharaKoji NishidaShigeto MurataShin-ichi KashiwaiKotaro InoueYuichiro Yoshimoto
    • Akihito OriiOsamu YokomizoYasuhiro MasuharaKoji NishidaShigeto MurataShin-ichi KashiwaiKotaro InoueYuichiro Yoshimoto
    • G21C3/322G21C3/344
    • G21C3/322G21C3/344Y02E30/38
    • In a fuel assembly having fuel rods inserted into regularly arranged cells of a fuel spacer which keeps the fuel rods correctly spaced from one another and has spacer elements disposed in a plurality of stages in the longitudinal direction of the fuel rods, the fuel spacer comprises vanes formed on the cells in such a manner that each vane is bent from a cut formed in a part of the side wall of the cell. The vanes obliquely project into the corresponding spaces between adjacent fuel rods and allow a coolant flowing through the spaces and forming two-phase flows to generate swirling flows toward the fuel rods. The fuel spacer may alternatively comprise either thin-walled cylinders having built-in vanes or spiral vanes, which are fixed to the spacer that has not been subjected to any direct machining. Also disclosed is a fuel assembly provided with any of the above-described fuel spacers. The arrangement of the present invention enables, while assuring a sufficient strength for maintaining fuel rods in their correct position, the transfer of heat from the fuel rods to the coolant to be promoted so as to raise the allowable power level of the fuel assembly, and enables the void ratio to be lowered so as to increase the reactivity.
    • 在具有插入燃料间隔件的规则布置的单元中的燃料棒的燃料组件中,燃料棒将燃料棒彼此正确地间隔开并具有沿着燃料棒的纵向设置成多级的间隔元件,燃料间隔件包括叶片 形成在电池上,使得每个叶片从形成在电池的侧壁的一部分中的切口弯曲。 叶片倾斜地突出到相邻燃料棒之间的相应空间中,并允许冷却剂流过空间并形成两相流以产生朝向燃料棒的旋流。 燃料间隔器可以可选地包括具有内置叶片或螺旋叶片的薄壁圆柱体,其固定到未经受任何直接加工的间隔件。 还公开了一种具有任何上述燃料间隔件的燃料组件。 本发明的结构在确保足够的强度以保持燃料棒处于其正确位置的同时,能够将热量从燃料棒传递到冷却剂以提高燃料组件的允许功率水平, 使空隙率降低,从而提高反应性。