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公开(公告)号：US4698200A
公开(公告)日：1987-10-06
申请号：US812045
申请日：1985-12-23
摘要： A self-actuated shutdown system incorporated into a reactivity control assembly in a nuclear reactor includes pumping means for creating an auxiliary downward flow of a portion of the heated coolant exiting from the fuel assemblies disposed adjacent to the control assembly. The shutdown system includes a hollow tubular member which extends through the outlet of the control assembly top nozzle so as to define an outer annular flow channel through the top nozzle outlet separate from an inner flow channel for primary coolant flow through the control assembly. Also, a latching mechanism is disposed in an inner duct of the control assembly and is operable for holding absorber bundles in a raised position in the control assembly and for releasing them to drop them into the core of the reactor for shutdown purposes. The latching mechanism has an inner flow passage extending between and in flow communication with the absorber bundles and the inner flow channel of the top nozzle for accommodating primary coolant flow upwardly through the control assembly. Also, an outer flow passage separate from the inner flow passage extends through the latching mechanism between and in flow communication with the inner duct and the outer flow channel of the top nozzle for accommodating inflow of a portion of the heated coolant from the adjacent fuel assemblies. The latching mechanism contains a magnetic material sensitive to temperature and operable to cause mating or latching together of the components of the latching mechanism when the temperature sensed is below a known temperature and unmating or unlatching thereof when the temperature sensed is above a given temperature. The temperature sensitive magnetic material is positioned in communication with the heated coolant flow through the outer flow passage for directly sensing the temperature thereof. Finally, the pumping means includes a jet induction pump nozzle and diffuser disposed adjacent the bottom nozzle of the control assembly and in flow communication with the inlet thereof. The pump nozzle is operable to create an upward driving flow of primary coolant through the pump diffuser and then to the absorber bundles. The upward driving flow of primary coolant, in turn, creates a suction head within the outer flow channel of the top nozzle and thereby an auxiliary downward flow of the heated coolant portion exiting from the upper end of the adjacent fuel assemblies through the outer flow channel to the pump nozzle via the outer flow passage of the latching mechanism and an annular space between the outer and inner spaced ducts of the control assembly housing. The temperature of the heated coolant exiting from the adjacent fuel assemblies can thereby be sensed directly by the temperature sensitive magnetic material in the latching mechanism.
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公开(公告)号：US5039351A
公开(公告)日：1991-08-13
申请号：US644404
申请日：1991-01-22
CPC分类号： H01G9/21
摘要： An alkali metal thermoelectric conversion device formed from a porous tube or plate coated with a thin film of beta-alumina, the porous tube or plate is sintered metal or metal alloy having a coefficient of thermal expansion which approaches that of the beta-alumina to form a mechanically stable device with high electrical output.
摘要翻译： 由涂覆有β-氧化铝薄膜的多孔管或板形成的碱金属热电转换装置，多孔管或板是具有接近于β-氧化铝的热膨胀系数的烧结金属或金属合金以形成 具有高电气输出的机械稳定装置。
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公开(公告)号：US4069100A
公开(公告)日：1978-01-17
申请号：US549570
申请日：1975-02-13
申请人： Martin H. Cooper
发明人： Martin H. Cooper
IPC分类号： F16J15/10 , G21C13/073 , G21C13/10 , G21C9/00
摘要： A system for reducing the possibility of leakage of fission gases from a nuclear reactor of the gas-cooled type or of a type utilizing a liquid coolant, for example a liquid metal with a cover gas above free surfaces of the coolant. The disclosed system reduces the leakage of fission gases from the cover gas through joints between a pressure vessel and a pressure vessel head in the nuclear reactor by installing an adsorbent material between two seals placed in the joints. This adsorbent material provides sufficient delay time to allow all radioactive isotopes, except long-lived nuclides, to decay to innocuous concentrations before escaping from the pressure vessel.
摘要翻译： 一种用于减少裂变气体从气体冷却型核反应堆泄漏的可能性的系统，或者是利用液体冷却剂，例如在冷却剂的自由表面上方具有覆盖气体的液态金属的类型。 所公开的系统通过在放置在接头中的两个密封件之间安装吸附剂材料来减少来自覆盖气体的裂变气体通过在核反应堆中的压力容器和压力容器头之间的接头的泄漏。 这种吸附剂材料提供足够的延迟时间，以允许所有放射性同位素，除了长寿命的核素，在从压力容器逸出之前，会腐烂至无害浓度。
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公开(公告)号：US4010068A
公开(公告)日：1977-03-01
申请号：US554786
申请日：1975-03-03
申请人： Martin H. Cooper
发明人： Martin H. Cooper
IPC分类号： G21C19/31 , G21C19/313 , G21C19/32
CPC分类号： G21C19/313 , G21C19/31
摘要： A system for removing radioactive fission products from a liquid metal reactor coolant. Isotopic diluents and reacting compounds are added to hot liquid sodium. The reactants isotopically exchange or chemically react with the fission products and are precipitated out of solution in a first cold trap. When the supply of reactants is exhausted, the flow is reversed; the first trap then functions to supply the reactants and the precipitation occurs in a second cold trap. The process operates continuously and reversibly.
摘要翻译： 用于从液态金属反应堆冷却剂中去除放射性裂变产物的系统。 将同位素稀释剂和反应化合物加入到热液体钠中。 反应物与裂变产物同位素交换或化学反应，并在第一个冷阱中从溶液中沉淀出来。 当反应物的供应耗尽时，流量反转; 第一个陷阱然后用于提供反应物并且在第二个冷阱中发生沉淀。 该过程持续可逆地运行。
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公开(公告)号：US5030411A
公开(公告)日：1991-07-09
申请号：US270558
申请日：1988-11-14
申请人： Martin H. Cooper
发明人： Martin H. Cooper
IPC分类号： G21C19/313
CPC分类号： G21C19/313
摘要： The coolant is circulated thorugh the core of the reactor by a pump between a higher-pressure plenum and a lower-pressure plenum. The impurities are removed by a cold trap between the higher-pressure plenum and the lower-pressure plenum. The trap is an integrated unit including an inner tube and an outer tube defining between them an annulus which contains packing. The outer surface of the outer tube is cooled to a temperature such that the impurities are precipitated from the coolant. Since the packing is coldest on the outside, the precipitation progresses axially upstream to downstream and radially inwardly. The precipitation in the outer part of the annulus insulates the inner part of the annulus thermally so that the reduction of the temperature of the coolant to saturation level in the inner part is delayed precluding premature blocking of the cold trap. The cooled coolant in the annulus also precools the coolant flowing in through the inner tube.
摘要翻译： 冷却剂通过泵在较高压力的压力室和较低压力的压力室之间循环使反应器的核心循环。 杂质通过高压增压室和低压增压室之间的冷阱除去。 捕集器是一个集成的单元，包括内管和外管，它们在它们之间形成一个包含填料的环状物。 将外管的外表面冷却至使杂质从冷却剂中沉淀出的温度。 由于包装在外部是最冷的，所以沉淀在轴向上游到下游并且径向向内。 环形部分的外部部分的沉淀使得热环境的内部部分绝热，使得内部部分的冷却剂温度降低到饱和水平被延迟，从而阻止冷阱的过早阻塞。 环形空气中冷却的冷却剂还预先冷却通过内管流入的冷却剂。
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公开(公告)号：US4405558A
公开(公告)日：1983-09-20
申请号：US197380
申请日：1980-10-15
申请人： James D. Mangus , Martin H. Cooper
发明人： James D. Mangus , Martin H. Cooper
摘要： The nuclear reactor shutdown system comprises a temperature sensitive device connected to a magnetic latch of a neutron absorbing mechanism. The temperature sensitive device is disposed in the neutron absorbing mechanism in such a manner that it is exposed to the reactor coolant so that when the reactor coolant temperature rises above a specific level, the temperature sensitive device will cause the magnetic latch to open and allow neutron absorbing material to enter the reactor core. The temperature sensitive device comprises temperature sensitive material which may be a temperature sensitive resistor sometimes referred to as a thermistor. The thermistor is a device wherein its resistivity significantly increases with increase in its temperature such that when its temperature has significantly increased, the current passing through this system substantially decreases. Therefore, when the nuclear reactor coolant temperature rises significantly, the resistivity in the temperature sensitive material significantly increases to the point where little electricity flows through the circuit thereby causing the magnetic field in the magnetic latch to fall to a level at which the magnetic latch opens thereby inserting neutron absorbing material in the reactor core.
摘要翻译： 核反应堆关闭系统包括连接到中子吸收机构的磁性闩锁的温度敏感装置。 温度敏感装置以这样的方式设置在中子吸收机构中，使得其暴露于反应堆冷却剂，使得当反应堆冷却剂温度升高到特定水平以上时，感温装置将导致磁性闩锁打开并允许中子 吸收材料进入反应堆堆芯。 温度敏感器件包括温度敏感材料，其可以是有时称为热敏电阻的温度敏感电阻器。 热敏电阻是其电阻率随着其温度的增加而显着增加的装置，使得当其温度显着增加时，通过该系统的电流显着降低。 因此，当核反应堆冷却剂温度显着升高时，感温材料中的电阻率显着增加到电流很小的点，从而使得磁性锁存器中的磁场下降到磁性锁定开口的水平 从而将中子吸收材料插入反应堆芯中。
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公开(公告)号：US4683365A
公开(公告)日：1987-07-28
申请号：US844422
申请日：1986-03-26
申请人： William H. Kasner , Martin H. Cooper , Clark E. Swenson , Albert P. Ciez , Katherine M. Andrews
发明人： William H. Kasner , Martin H. Cooper , Clark E. Swenson , Albert P. Ciez , Katherine M. Andrews
CPC分类号： B23K26/0643 , B23K26/06 , B23K26/0604
摘要： A laser welding beam transport system is provided in which the laser beam 14 emanating from the laser generator 10 is expanded in diameter in an expander 16 at a location close to the generator, and then is transported in its expanded diameter to a remote location where the beam is reduced in diameter in a beam reducer 26 at a location close to the welding station 28 for the purpose of maintaining a relatively constant power density of the beam at the station over a significant range of working travel of the working station.
摘要翻译： 提供了一种激光焊接光束传输系统，其中从激光发生器10发出的激光束14在靠近发生器的位置处在扩展器16中直径扩展，然后以其扩展的直径传输到远程位置， 在靠近焊接站28的位置处的梁减速器26中的梁的直径减小，以便在工作站的工作行程的相当大的工作行程上保持站处的梁的相对恒定的功率密度。
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8.发明授权
公开(公告)号：US4204911A
公开(公告)日：1980-05-27
申请号：US668162
申请日：1976-03-16
申请人： Martin H. Cooper
发明人： Martin H. Cooper
CPC分类号： G21C19/31
摘要： A method and apparatus for removing iodine-131 and iodine-125 from a liquid sodium reactor coolant. Non-radioactive iodine is dissolved in hot liquid sodium to increase the total iodine concentration. Subsequent precipitation of the iodine in a cold trap removes both the radioactive iodine isotopes as well as the non-radioactive iodine.
摘要翻译： 一种从液态钠反应堆冷却剂中除去碘-131和碘-125的方法和装置。 非放射性碘溶解于热液体钠中以增加总碘浓度。 随后碘沉淀在冷阱中，同时消除放射性碘同位素以及非放射性碘。
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公开(公告)号：US4152207A
公开(公告)日：1979-05-01
申请号：US871055
申请日：1978-01-20
申请人： Martin H. Cooper
发明人： Martin H. Cooper
摘要： A lateral restraint and control system for a nuclear reactor core adaptable to provide an inherent decrease of core reactivity in response to abnormally high reactor coolant fluid temperatures. An electromagnet is associated with structure for radially compressing the core during normal reactor conditions. A portion of the structures forming a magnetic circuit are composed of ferromagnetic material having a curie temperature corresponding to a selected coolant fluid temperature. Upon a selected signal, or inherently upon a preselected rise in coolant temperature, the magnetic force is decreased a given amount sufficient to relieve the compression force so as to allow core radial expansion. The expanded core configuration provides a decreased reactivity, tending to shut down the nuclear reaction.
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公开(公告)号：US4813564A
公开(公告)日：1989-03-21
申请号：US160438
申请日：1988-02-25
CPC分类号： B65D55/028 , B65D5/4291 , Y10S206/807
摘要： The package includes a body and a closure. A readily breakable electrical oscillatory network sans power supply is physically connected between the body and the closure. The network is tuned to resonate at a predetermined frequency. The package is monitored by a transmitter-receiver when it is distributed to a customer. The transmitter produces pulse signals in a carrier frequency band which overlaps the resonant frequency of the network. During monitoring the package is placed in the field of the transmitter and the oscillatory network is excited to produce a decaying pulse for each transmitter pulse. The receiver is gated during the interval when each transmitter pulse is generated but is receptive of the corresponding decaying pulse from the network. If the package is sealed, the oscillatory network is intact and the receiver receives decaying pulses which produce visual or audible signals. If the package has been opened, the network is broken and no signals are produced.
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