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    • 88. 发明授权
    • Capsule for the containment of spent nuclear fuel and a method of
manufacturing such a capsule
    • 用于遏制乏核燃料的胶囊和制造这种胶囊的方法
    • US5835548A
    • 1998-11-10
    • US894697
    • 1997-08-26
    • Per-Olov LindgrenJoakim Pettersson
    • Per-Olov LindgrenJoakim Pettersson
    • G21F5/008C25D3/38G21D5/00G21F9/36G21F5/00G21C19/00
    • G21D5/00G21Y2002/302G21Y2004/40
    • The invention relates to a capsule for the containment of spent nuclear fuel, wherein the capsule has a cylindrical part which comprises a steel cylinder tightly embraced by a copper layer whose thickness is of the same order as the thickness of the cylinder wall. The copper layer is a continuous layer applied electrolytically over the outer surface of the steel cylinder and has an homogenous grain structure. The invention also relates to a method of producing capsules for the containment of spent nuclear fuel, wherein a steel cylinder of predetermined length and diameter is placed as a cathode in an electrolytic cell containing a copper salt solution as electrolyte. An electric current whose strength is effective in precipitating copper is passed through the cell to the steel cylinder via one or more anodes, while rotating the cylinder, until a copper coating of predetermined thickness has been formed on the outer surface of the cylinder. The copper-coated cylinder is then heated to a temperature and for a period of time that will ensure that the whole of the inhomogeneous copper-grain structure formed in the electrolysis process is converted to a structure having a predetermined homogenous grain size. The coated cylinder is then cooled as rapidly as possible, so as to maintain essentially the copper-layer structure of homogenous grain size.
    • PCT No.PCT / SE96 / 00287 Sec。 371日期:1997年8月26日 102(e)日期1997年8月26日PCT 1996年3月5日PCT公布 出版物WO96 / 27884 日期1996年9月12日本发明涉及一种用于容纳乏核燃料的胶囊,其中胶囊具有圆柱形部分,该圆柱形部分包括紧密包围铜层的钢圆筒,其厚度与圆柱体的厚度相同 壁。 铜层是电镀在钢瓶外表面上的连续层,具有均匀的晶粒结构。 本发明还涉及一种生产用于容纳废核燃料的胶囊的方法,其中将预定长度和直径的钢筒作为阴极放置在含有铜盐溶液作为电解质的电解槽中。 通过一个或多个阳极,使气缸的强度有效的电流通过一个或多个阳极,同时旋转气缸,直到在气缸的外表面上形成预定厚度的铜涂层。 然后将铜包覆的圆筒加热到一定温度并保持一段时间,以确保在电解过程中形成的整个不均匀的铜晶粒结构转变为具有预定均匀晶粒尺寸的结构。 然后将涂覆的圆筒尽可能快地冷却,以便基本上保持均匀晶粒尺寸的铜层结构。
    • 89. 发明授权
    • Nuclear rocket feed system incorporating an auxiliary power cycle
    • 包含辅助动力循环的核火箭进料系统
    • US5636512A
    • 1997-06-10
    • US324058
    • 1994-10-14
    • Donald W. Culver
    • Donald W. Culver
    • G21D5/02G21D5/00
    • G21D5/02
    • A nuclear rocket engine comprising a primary feed system (4) for pumping rocket propellant from a propellant source (10) to a nuclear reactor (6) and an auxiliary feed system (60) coupled to the primary feed system. The auxiliary feed system includes a space radiator (84) for discharging excess reactor heat into space and a motorgenerator (74) for creating electricity from the excess reactor heat. A recuperator (20) operates to heat liquid propellant before it enters the reactor and to retain heat within the system. The auxiliary power system can be configured into a high thrust mode (see FIG. 1) for withdrawing heat from the engine when the reactor is operating at full power, a low thrust mode (see FIG. 2) for throttling propellant flow and radiating heat from the engine during reactor shutdown and a zero thrust mode (see FIG. 3) for cooling the nuclear reactor and generating electricity for the rocket's auxiliary power requirements for the remainder of the mission.
    • 一种核火箭发动机,其包括用于将火箭推进剂从推进剂源(10)泵送到核反应堆(6)的主进料系统(4)和耦合到主进料系统的辅助进料系统(60)。 辅助进料系统包括用于将多余反应堆热量排放到空间中的空间散热器(84)和用于从多余的反应堆热量产生电力的电动发电机(74)。 换热器(20)在其进入反应器之前加热液体推进剂并在系统内保持热量。 辅助动力系统可以配置成高推力模式(见图1),用于当反应堆全功率运行时从发动机中排出热量,用于节流推进剂流量和辐射热的低推力模式(见图2) 在反应堆关闭期间的发动机和用于冷却核反应堆的零推力模式(参见图3),并且为剩余任务中的火箭的辅助动力要求发电。