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
    • 4. 发明授权
    • Holddown device for nuclear fuel assembly
    • 用于核燃料组件的压紧装置
    • US4078967A
    • 1978-03-14
    • US708514
    • 1976-07-26
    • Andrew James Anthony
    • Andrew James Anthony
    • G21C3/326G21C3/33G21C5/06G21C5/10G21C3/30
    • G21C5/06G21C3/326Y02E30/38
    • An apparatus for preventing "floating" of nuclear-reactor fuel assemblies due to hydraulic forces is disclosed. The apparatus uses a holddown column made of the same material as the core barrel. The column is positioned in a center guide-tube location in the fuel assembly in such a manner as to enable it either to slide within the center guide tube or, if the center guide tube is replaced by the column, to slide through openings in the spacer grids. The lower end of the holddown column engages the lower end fitting of the fuel assembly, and the upper end of the column engages a flow plate to which holddown force is applied. As a consequence of this arrangement, holddown force is transmitted from the flow plate through the holddown column to the lower end fitting. Movement of the fuel assembly is thereby prevented without a compression load being applied to the fuel-assembly structure. In addition, variations due to thermal expansion in the distance between the lower core plate and the upper core plate are largely made up for by corresponding variations in the holddown column because the holddown column and the core barrel can be made of the same material.
    • 公开了一种用于防止由于液压而“浮”的核反应堆燃料组件的装置。 该装置使用由与芯筒相同的材料制成的压紧柱。 该柱以燃料组件的中心导管位置的方式定位,以使其能够在中心导向管内滑动,或者如果中心导管被柱替代,则滑动通过 间隔网格 压紧柱的下端接合燃料组件的下端配件,并且柱的上端接合施加压紧力的流动板。 作为这种布置的结果,压紧力从流板通过压紧柱传递到下端配件。 因此,在不对燃料组件结构施加压缩载荷的情况下,可以防止燃料组件的移动。 此外,由于按压柱和芯筒可以由相同的材料制成,因此通过压紧柱的相应变化,很大程度上弥补了由于下芯板和上芯板之间的距离的热膨胀引起的变化。