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公开(公告)号：US4983351A
公开(公告)日：1991-01-08
申请号：US345864
申请日：1989-05-01
IPC分类号： G21C17/108
CPC分类号： G21C17/108
摘要： A hydro-ball in-core instrumentation system employs detector strings each comprising a wire having radiation sensitive balls affixed diametrically at spaced positions therealong and opposite tip ends of which are transportable by fluid drag through interior passageways through which primary coolant is caused to flow selectively in first and second opposite directions for transporting the detector strings from stored positions in an exterior chamber to inserted positions within the instrumentation thimbles of the fuel rod assemblies of a pressure vessel, and for return. The coolant pressure within the detector passageways is the same as that within the vessel; face contact, disconnectable joints between sections of the interior passageways within the vessel facilitate assembly and disassembly of the vessel for refueling and routine maintenance operations. The detector strings may pass through a very short bend radius thereby minimizing space requirements for the connections of the instrumentation system to the vessel and concomitantly the vessel containment structure. Improved radiation mapping and a significant reduction in potential exposure of personnel to radiation are provided. Both top head and bottom head penetration embodiments are disclosed.
摘要翻译： 水球核心仪表系统采用检测器串，每个检测器串包括具有径向固定在其间隔的位置处的辐射敏感球的线，并且其相对的顶端可以通过内部通道的流体阻力传输，通过该内部通道使一次冷却剂选择性地流过 用于将检测器串从外部室中的存储位置传送到压力容器的燃料棒组件的仪表套管内的插入位置并用于返回的第一和第二相反方向。 检测器通道内的冷却剂压力与容器内的冷却剂压力相同; 面部接触，容器内部通道的部分之间的可断开接头有助于容器的装配和拆卸，用于加油和日常维护操作。 检测器串可以穿过非常短的弯曲半径，从而最小化仪器系统与容器的连接的空间要求，同时伴随着容器密封结构。 提供了改进的辐射测绘和人员对辐射的潜在暴露的显着减少。 公开了顶部头部和底部头部穿透实施例。
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公开(公告)号：US4839137A
公开(公告)日：1989-06-13
申请号：US195438
申请日：1988-05-16
CPC分类号： G21D1/00 , G21C13/00 , Y02E30/40 , Y10S376/909 , Y10S376/912
摘要： A method of providing a nuclear steam supply system that is constructed to include a barge or flotation base as an integrated portion thereof. The system is tested for operability and safety at the factory and then towed along navigable coastal or inland waterways, or overseas to foreign locations, to a prepared foundation site at its point of use. The overall unit is so constructed and arranged as to permit the removal of top and side portions to permit passage under low bridges and through narrow locks without requiring disassembly of safety class piping and wiring. The method further provides for a complete nuclear power plant constructed on multiple barges at a separate factory site in parallel with plant site preparation, i.e., in estuaries or caves.
摘要翻译： 一种提供核蒸汽供应系统的方法，其被构造为包括作为其整体部分的驳船或浮选基座。 该系统经过工厂的可操作性和安全性测试，然后沿着可航海的沿海或内陆水道或海外到国外的地点被拖到准备使用的基础场所。 总体单元被构造和布置成允许顶部和侧部的移除，以允许在低桥下通过狭窄的锁，而不需要拆卸安全等级的管道和布线。 该方法进一步提供了一个完整的核动力装置，其在多个驳船上在单独的工厂现场与工厂现场准备（即在河口或洞穴中）平行地构建。
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公开(公告)号：US4786461A
公开(公告)日：1988-11-22
申请号：US538040
申请日：1983-09-30
申请人： Luciano Veronesi , Stephen N. Tower
发明人： Luciano Veronesi , Stephen N. Tower
摘要： Disclosed is a reactor internals hold down spring and upper head region cooling passage. The hold down spring utilizes a plurality of stacks of Belleville spring washers to provide spring load and deflection capability to hold down the reactor vessel internals. Each spring assembly includes a generally leak tight means for passing an adjustable coolant flow to the upper reactor vessel head region in order to maintain that region at inlet coolant temperature. The spring assemblies are angularly spaced about a core barrel support flange to cooperate with coolant flow passage formed therein.
摘要翻译： 公开了一种反应堆内部压紧弹簧和上部头部区域冷却通道。 压紧弹簧使用多个叠层的Belleville弹簧垫圈来提供弹簧载荷和挠曲能力来压紧反应堆容器内部件。 每个弹簧组件包括通常泄漏的装置，用于将可调节冷却剂流通到上反应器容器头部区域，以便将该区域保持在入口冷却剂温度。 弹簧组件围绕芯筒支撑凸缘成角度地间隔开，以与形成在其中的冷却剂流动通道配合。
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公开(公告)号：US4756877A
公开(公告)日：1988-07-12
申请号：US795305
申请日：1985-11-06
申请人： Luciano Veronesi , Stephen N. Tower
发明人： Luciano Veronesi , Stephen N. Tower
CPC分类号： G21C5/08 , Y02E30/40 , Y10T29/49959 , Y10T29/49968
摘要： A core support system for a core barrel of a nuclear reactor, which core barrel has a bottom core support plate wherein the core support plate has apertures therethrough about the periphery thereof which communicate with recesses in engagement means for the core support plate, and keys inserted into the core support plate apertures and secured thereto with the lower section of the key extending into the recess of the engagement means. The method of installation enables alignment and securement of the core barrel in the pressure vessel without need for an assembler to enter the area between the core barrel support plate and the bottom of the vessel.
摘要翻译： 用于核反应堆的核心筒的核心支撑系统，其核心筒具有底部芯支撑板，其中芯支撑板具有围绕其周边的孔，其与用于芯支撑板的接合装置中的凹部连通，并且插入的钥匙 进入芯支撑板孔并固定到其上，键的下部延伸到接合装置的凹槽中。 该安装方法能够使芯筒在压力容器中对准和固定，而不需要组装者进入芯筒支撑板和容器底部之间的区域。
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公开(公告)号：US4717527A
公开(公告)日：1988-01-05
申请号：US626847
申请日：1984-07-02
申请人： Robert K. Gjertsen , Elmer A. Bassler , Edgar A. Huckestein , Robert B. Salton , Stephen N. Tower
发明人： Robert K. Gjertsen , Elmer A. Bassler , Edgar A. Huckestein , Robert B. Salton , Stephen N. Tower
CPC分类号： G21C3/328 , G21C7/27 , G21Y2002/201 , G21Y2004/30 , Y02E30/38 , Y02E30/39
摘要： A fuel assembly for a pressurized water nuclear reactor incorporating fluid moderator spectral shift control means. During the first part of the fuel cycle when there is excess reactivity, neutron moderation may be decreased by replacing a portion of the water within the core with a less effective moderator such as heavy water. During the life of the fuel, the heavy water is gradually replaced with regular water. The fuel assembly incorporates the necessary means and apparatus to effectuate such control.
摘要翻译： 一种包含流体调节剂光谱变换控制装置的加压水核反应堆的燃料组件。 在燃料循环的第一部分，当存在过量的反应性时，通过用较不有效的减速剂（例如重水）代替芯中的一部分水可以减少中子调节。 在燃料的使用寿命期间，重水逐渐被普通的水替代。 燃料组件包括实现这种控制的必要手段和装置。
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公开(公告)号：US4708842A
公开(公告)日：1987-11-24
申请号：US815779
申请日：1986-01-02
摘要： Apparatus comprising a seal connector is disclosed for sealingly connecting flow channels in the core support plate with flow channels in fuel assemblies for use in a spectral shift pressurized water nuclear reactor. Spectral shift is obtained by displacing a portion of the light water in the core with deuterium oxide or a combination of deuterium oxide and light water or various gases such as helium during the initial state of reactor operation to harden the nuclear spectrum and thereby reduce excess reactivity and increase the production of fissile materials. The seal connectors provide a sealed flow channel for introducing the deuterium oxide into the core during the early stages of reactor operation and for reintroducing the light water into the core during the later stages of reactor operation.
摘要翻译： 公开了一种包括密封连接器的装置，用于将芯支撑板中的流动通道与用于光谱位移加压水核反应堆的燃料组件中的流动通道密封连接。 通过在反应器操作的初始状态期间用氧化氘或氘氧化物和轻水或诸如氦气的各种气体的组合置换核心中的一部分轻水来硬化核谱，从而减少过量反应性，从而获得光谱偏移 并增加裂变材料的生产。 密封连接器提供密封流动通道，用于在反应器操作的早期阶段将氧化氘引入核心，并在反应器操作的后期阶段将轻水重新引入核心。
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公开(公告)号：US4418036A
公开(公告)日：1983-11-29
申请号：US217051
申请日：1980-12-16
CPC分类号： G21C3/352 , G21Y2002/304 , G21Y2004/30 , Y02E30/40 , Y10S376/90
摘要： A fuel assembly for a nuclear reactor comprises a 5.times.5 array of guide tubes in a generally 20.times.20 array of fuel elements. The guide tubes are arranged to accommodate either control rods or water displacer rods. The fuel assembly also comprises a plurality of Inconel and Zircaloy grids arranged to provide stability of the fuel elements and guide tubes while allowing the flow of reactor coolant therebetween.
摘要翻译： 用于核反应堆的燃料组件包括通常为20×20的燃料元件阵列的5×5阵列的导管。 引导管布置成容纳控制棒或排水棒。 燃料组件还包括多个Inconel和Zircaloy网格，其布置成提供燃料元件和引导管的稳定性，同时允许反应堆冷却剂在其间的流动。
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公开(公告)号：US4702879A
公开(公告)日：1987-10-27
申请号：US872985
申请日：1986-06-11
申请人： Stephen N. Tower , Terry L. Schulz
发明人： Stephen N. Tower , Terry L. Schulz
摘要： A pressurized nuclear water reactor has a substantially cylindrical flow liner with a cylindrical wall section and bottom and an open top. A barrel forms a riser chamber that contains the core in the flow liner. A pressure vessel contains the cylindrical flow liner to form a second annular chamber therebetween that contains a supplementary liquid coolant, with insulation means to provide a major portion of the supplementary liquid coolant at a first temperature and a minor portion thereof at a second higher temperature. Upon depressurization in the vessel, fluid communication means enable injection of supplementary liquid coolant from the second annular chamber into the core upon flashing of a minor portion to vapor. A further pool of water outside the pressure vessel, and insulation on the wall, maintain the desired temperature in the supplementary liquid coolant supply. Injection or removal of borated solution, as a chemistry control solution, into or from the supplementary liquid coolant is provided. A passive safety system incorporates the reactor with means for circulating water solely by natural convection from the hot leg to the cold leg of the primary coolant system and has heat exchange means associated therewith.
摘要翻译： 加压核水反应器具有基本上圆柱形的流动衬套，其具有圆柱形壁部分和底部以及开放顶部。 一个桶形成一个提升室，它包含流动衬套中的核心。 压力容器包含圆柱形流动衬套，以在其间形成第二环形室，其中包含补充液体冷却剂，其中绝缘装置在第二温度下在第一温度下提供辅助液体冷却剂的主要部分，并且其次要部分提供第二较高温度的辅助液体冷却剂。 当在容器中减压时，流体连通装置使辅助液体冷却剂从次要部分闪蒸到蒸气时从第二环形室注入芯中。 在压力容器外部的另一个水池和墙壁上的绝缘体，保持辅助液体冷却剂供应中所需的温度。 提供将硼酸溶液作为化学控制溶液注入或除去辅助液体冷却剂。 被动安全系统包括反应器，该装置仅通过自热对流从第一冷却剂系统的冷腿循环到水，并具有与之相关联的热交换装置。
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公开(公告)号：US3951738A
公开(公告)日：1976-04-20
申请号：US468778
申请日：1974-05-10
IPC分类号： G21D1/04 , G21C15/24 , G21C15/247 , G21D1/02 , E21C7/06
CPC分类号： G21C15/24 , G21C15/247 , Y02E30/40
摘要： A core cooling system is disclosed for a nuclear reactor of the type utilizing a liquid coolant with a cover gas above free surfaces of the coolant. The disclosed system provides for a large inventory of reactor coolant and a balanced low pressure cover gas arrangement. A flow restricting device disposed within a reactor vessel achieves a pressure of the cover gas in the reactor vessel lower than the pressure of the reactor coolant in the vessel. The low gas pressure is maintained over all free surfaces of the coolant in the cooling system including a coolant reservoir tank. Reactor coolant stored in the reservoir tank allows for the large reactor coolant inventory provided by this invention.
摘要翻译： 公开了一种核冷却系统，其用于在冷却剂的自由表面上方具有覆盖气体的液体冷却剂的核反应堆。 所公开的系统提供反应堆冷却剂的大量库存和平衡的低压盖气体配置。 设置在反应器容器内的流动限制装置实现反应器容器内的覆盖气体的压力低于容器中的反应堆冷却剂的压力。 在包括冷却剂储存罐的冷却系统中，冷却剂的所有自由表面都保持低气体压力。 存储在储罐中的反应堆冷却液允许本发明提供的大的反应堆冷却剂库存。
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公开(公告)号：US5078957A
公开(公告)日：1992-01-07
申请号：US618126
申请日：1990-11-26
CPC分类号： G21C17/10
摘要： A preferred embodiment of the present invention provides an incore instrumentation system for detecting conditions, e.g., neutron flux density, within the core of a pressurized water nuclear reactor (PWR). The instrumentation system includes a plurality of long straight thimbles (52), containing fixed incore detectors, which are inserted through the top closure head (18) of the PWR. The invention meets today's principal utility, EPRI, DOE and NRC requirements and preferences, including no bottom RV head penetrations and the use of fixed incore instrumentation. In addition, an instrumentation system according to the invention is mechanically simple with a straight core insertion/removal path that does not conflict with or add significant complexity to the reactor internals.
摘要翻译： 本发明的优选实施例提供了一种用于检测加压水核反应堆（PWR）的核心内的条件（例如中子通量密度）的仪器仪表系统。 仪器系统包括多个长直的套管（52），其包含固定的不连续检测器，其穿过PWR的顶盖封头（18）插入。 本发明符合今天的主要实用程序，EPRI，DOE和NRC的要求和偏好，包括没有底部RV头部穿透和使用固定仪器。 此外，根据本发明的仪表系统在机械上是简单的，其具有与反应器内部构件不冲突或增加重要复杂性的直芯插入/移除路径。
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