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公开(公告)号：US4279700A
公开(公告)日：1981-07-21
申请号：US950359
申请日：1978-10-11
摘要： Apparatus comprising a two layered composite with an internal core of zirconium or zirconium alloy which retains tritium, and an adherent nickel outer layer which acts as a protective and selective window for passage of the tritium.
摘要翻译： 包括具有保留氚的锆或锆合金的内核的双层复合材料的装置以及用作通过氚的保护性选择性窗口的附着镍外层。
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公开(公告)号：US4199404A
公开(公告)日：1980-04-22
申请号：US822115
申请日：1977-08-05
摘要： A fuel-pellet composition for use in fast breeder reactors. Uranium carbide particles are mixed with a powder of uranium-plutonium carbides having a stable microstructure. The resulting mixture is formed into fuel pellets. The pellets thus produced exhibit a relatively low propensity to swell while maintaining a high density.
摘要翻译： 用于快速增殖反应堆的燃料颗粒组合物。 碳化铀颗粒与具有稳定微观结构的铀 - 钚碳化物粉末混合。 所得混合物形成燃料颗粒。 如此制备的颗粒在保持高密度的同时表现出相对低的膨胀倾向。
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公开(公告)号：US4131511A
公开(公告)日：1978-12-26
申请号：US765462
申请日：1977-02-04
申请人： Walter J. Mordarski , Jerome Roth
发明人： Walter J. Mordarski , Jerome Roth
摘要： A nuclear fuel pin is formed of an elongated metallic tube, closed at each end, containing stacked fuel pellets and material including little, or no, fissionable material, and formed into porous, or bubbled, microspheres placed in the annulus between the pellets and the internal wall of the tube.
摘要翻译： 核燃料销由细长的金属管形成，每个端部封闭，包含堆叠的燃料颗粒和包含很少或不具有可裂变材料的材料，并且形成为放置在颗粒和颗粒之间的环中的多孔或鼓泡的微球体 管的内壁。
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公开(公告)号：US4125434A
公开(公告)日：1978-11-14
申请号：US760357
申请日：1977-01-19
申请人： Gustav Fromel , Peter Suchy , Gerhard Ulrych
发明人： Gustav Fromel , Peter Suchy , Gerhard Ulrych
CPC分类号： G21C3/3563 , G21C3/322 , Y02E30/38
摘要： A nuclear reactor-fuel element with cylindrical fuel rods and a fuel element skeleton formed of a head and foot member and cylindrical control rod-guide tubes connecting the members includes a plurality of mesh-forming spacing holder-grids for the fuel rods fastened to the guide tubes, the control rod-guide tubes being received respectively in the mesh formed by the spacing holder-grids, and flow guide means in vicinity of at least one of the spacing holder-grids largely closing, from a flow-technology standpoint, the cross section of the respective mesh surrounding the guide tube received therein.
摘要翻译： 具有圆柱形燃料棒和由头部和脚部构件形成的燃料元件骨架的核反应堆 - 燃料元件和连接该构件的圆柱形控制杆导向管包括多个用于固定到该燃料棒上的燃料棒的成网间隔保持架网格 引导管，控制棒导向管分别被接收在由间隔保持架网格形成的网格中，并且流动引导装置在距离流动技术的观点，至少一个间隔保持架网格附近大大关闭。 围绕引导管的各个网的横截面被容纳在其中。
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公开(公告)号：US4125433A
公开(公告)日：1978-11-14
申请号：US751526
申请日：1976-12-16
申请人： Vladimir G. Iljunin , Viktor M. Murogov , Mikhail F. Troyanov , Anatoly A. Rineisky , Anatoly N. Shmelev
发明人： Vladimir G. Iljunin , Viktor M. Murogov , Mikhail F. Troyanov , Anatoly A. Rineisky , Anatoly N. Shmelev
CPC分类号： G21C3/3213 , Y02E30/40
摘要： A fuel assembly for a nuclear fast neutron reactor comprises a shroud having an upstream head piece and a downstream tail piece. The shroud houses fuel elements having portions filled with fissionable and raw materials and plenums serving as accumulation reservoirs for fission gases evolved in the fuel. The fission-gas plenums are divided into a central and peripheral groups. At least one of these groups is positioned in the tail piece of the fuel assembly shroud downstream of the coolant inlet ports before the portions filled with fissionable and raw materials.
摘要翻译： 用于核快中子反应堆的燃料组件包括具有上游头部件和下游尾部件的护罩。 护罩装有燃料元件，其具有填充有可裂变的部分的燃料元件，以及用作在燃料中释放的裂变气体的蓄积池的充气室。 裂变气体增压室分为中央和外围组。 这些组中的至少一个在填充有可裂变材料和原材料的部分之前被定位在燃料组件罩的尾部，在冷却剂入口的下游。
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公开(公告)号：US4098644A
公开(公告)日：1978-07-04
申请号：US771516
申请日：1977-02-24
申请人： Hideo Hirama
发明人： Hideo Hirama
摘要： A nuclear fuel element comprises an elongated tube having upper and lower end plugs fixed to both ends thereof and nuclear fuel pellets contained within the tube. The fuel pellets are held against the lower end plug by a spring which is supported by a setting structure. The setting structure is maintained at a proper position at the middle of the tube by a wedge effect caused by spring force exerted by the spring against a set of balls coacting with a tapered member of the setting structure thereby wedging the balls against the inner wall of the tube and the setting structure is moved free by pushing with a push bar against the spring force so as to release the wedge effect.
摘要翻译： 核燃料元件包括细长管，其具有固定到其两端的上端和下端塞，并且核燃料颗粒包含在管内。 燃料颗粒通过由固定结构支撑的弹簧保持抵靠下端塞。 设置结构通过由弹簧施加的弹簧力而产生的楔形效应保持在管的中间的适当位置，抵抗与凝结结构的锥形构件共同作用的一组球，从而将球抵住内壁 通过用推杆抵抗弹簧力推动管和设置结构自由移动，以释放楔形效果。
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公开(公告)号：US4054487A
公开(公告)日：1977-10-18
申请号：US581533
申请日：1975-05-28
申请人： Toru Fujibayashi
发明人： Toru Fujibayashi
摘要： In a nuclear fuel rod, a wound leaf spring member is interposed between a sheath and a stack of fuel pellets contained therein.
摘要翻译： 在核燃料棒中，缠绕板弹簧构件插入在护套和其中包含的燃料芯块之间。
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公开(公告)号：US4040903A
公开(公告)日：1977-08-09
申请号：US502420
申请日：1974-09-03
申请人： James E. Monroe, Jr.
发明人： James E. Monroe, Jr.
摘要： A thermionic device for converting nuclear energy into electrical energy comprising a tubular anode spaced from and surrounding a cylindrical cathode, the cathode having an outer emitting surface of ruthenium, and nuclear fuel on the inner cylindrical surface. The nuclear fuel is a ceramic composition of fissionable material in a metal matrix. An axial void is provided to collect and contain fission product gases.
摘要翻译： 用于将核能转换成电能的热离子装置，包括与圆柱形阴极间隔开并围绕圆筒形阴极的管状阳极，阴极具有钌的外部发射表面，以及内部圆柱形表面上的核燃料。 核燃料是金属基质中的可裂变材料的陶瓷组合物。 提供轴向空隙以收集和容纳裂变产物气体。
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公开(公告)号：US4020673A
公开(公告)日：1977-05-03
申请号：US540895
申请日：1975-01-14
摘要： A method and system for fuel rod pressurization and for verifying when pressurization of a fuel rod containing nuclear fuel has taken place. One end of the loaded fuel rod is inserted into a pressure chamber in sealed relation thereto, whereupon the chamber is evacuated to remove the air present. Then the chamber is pressurized with an inert gas. The fuel rod then is drilled to provide an opening in the end of the fuel rod in the chamber, whereupon the rod is pressurized with the inert gas present in the chamber. Acoustic transducers are attached to the fuel rod at predetermined locations externally of the chamber for monitoring any noise which occurs during the pressurization process, which is transmitted through the metal walls of the rod to the transducers. The transducers generate electrical signals which are proportional to the amplitude of the noise sensed and by observing the signals a calibration of the activity going on can be maintained. A pressure transducer is connected with the pressure chamber for monitoring the status of the pressure in the chamber and providing an output signal which is proportional thereto. The acoustic and pressure signals are processed through appropriate electronic circuitry and recorded in analog and/or digital fashion for providing a comparative indication as to the status of when the necessary steps and activities for pressurization of the fuel rod have been accomplished.
摘要翻译： 用于燃料棒加压的方法和系统，并且用于验证当包含核燃料的燃料棒的加压是否发生时。 装载的燃料棒的一端以与其密封的关系插入压力室中，由此抽空室以除去存在的空气。 然后用惰性气体对室进行加压。 然后钻出燃料棒以在腔室中的燃料棒的端部提供开口，于是杆被存在于腔室中的惰性气体加压。 声学换能器在室外的预定位置处连接到燃料棒，用于监测在加压过程中发生的任何噪声，其通过杆的金属壁传递到换能器。 换能器产生与所感测的噪声的幅度成比例的电信号，并且通过观察信号可以维持正在进行的活动的校准。 压力传感器与压力室连接，用于监测室内的压力状态并提供与其成比例的输出信号。 声学和压力信号通过适当的电子电路进行处理，并以模拟和/或数字方式进行记录，以提供关于何时完成燃料棒加压的必要步骤和活动的状态的比较指示。
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50.发明授权Austenitic stainless steel alloys having improved resistance to fast neutron-induced swelling 失效具有改善电阻的快速中性诱发裂纹的奥氏体不锈钢合金
公开(公告)号：US4011133A
公开(公告)日：1977-03-08
申请号：US596546
申请日：1975-07-16
摘要： The present invention is based on the discovery that radiation-induced voids which occur during fast neutron irradiation can be controlled by small but effective additions of titanium and silicon. The void-suppressing effect of these metals in combination is demonstrated and particularly apparent in austenitic stainless steels.
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