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公开(公告)号：US12046380B2
公开(公告)日：2024-07-23
申请号：US17151012
申请日：2021-01-15
申请人： TerraPower, LLC
摘要： A fast neutron nuclear reactor contains a nuclear reactor core having an array of device locations. Some device locations in the nuclear reactor core contain fissile and fertile nuclear fuel assembly devices. One or more other device locations in the nuclear reactor core contain Doppler reactivity augmentation devices that amplify the negativity of the Doppler reactivity coefficient within the nuclear reactor core. In some implementations, a Doppler reactivity augmentation device can also reduce the coolant temperature coefficient within the nuclear reactor core. Accordingly, a Doppler reactivity augmentation device contributes to a more stable nuclear reactor core.
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公开(公告)号：US20220246316A1
公开(公告)日：2022-08-04
申请号：US17630507
申请日：2021-06-07
发明人： Po HU
摘要： The present invention relates to a travelling wave reactor for a space exploration. A reactor core of the travelling wave reactor is dispersed into several modules in a travelling wave direction; a new reactor is sequentially provided with a starting source module and a plurality of new fuel modules at zero burnup; all the modules are coaxially assembled in the travelling wave direction by means of an assembling parts, and each module further includes a heat pipe; during assembly, the heat pipe in each module positioned at a front part sequentially passes through all the modules positioned at a rear portion thereof and extends out of the module at a rear end; and after a period of time of burn-up, the reactor core of the travelling wave reactor is provided with the starting source module, a spent fuel module, a critical fuel module and the new fuel module sequentially in the travelling wave direction.
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公开(公告)号：US10672522B2
公开(公告)日：2020-06-02
申请号：US14617144
申请日：2015-02-09
发明人： Michael D. Heibel
摘要： A magneto-rheological filter/reflector that controls the transmissivity of any form of electromagnetic or particulate radiation through the filter by varying discrete electromagnetic fields across a magneto-rheological fluid. In one embodiment, the filter/reflector controls the rate of the nuclear reaction within the core of a reactor without any moving parts.
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公开(公告)号：US10580538B2
公开(公告)日：2020-03-03
申请号：US15198379
申请日：2016-06-30
发明人： In Bae Chang , Dae Hee Lee , Sang Gyoon Jang , Myoung Goo Lee , Jin Seok Park , Yong Tae Jang , Chang Kyu Chung , Cheol Soo Maeng
摘要： An apparatus for detecting a position of a control rod includes a control rod driving shaft having an outer circumferential surface on which position information is marked, a mirror configured to reflect the position information, and a detector configured to detect a position of the control rod driving shaft from the position information reflected from the mirror, when the control rod driving shaft moves vertically.
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公开(公告)号：US10573417B2
公开(公告)日：2020-02-25
申请号：US15022689
申请日：2014-03-19
发明人： Kirill Gennadievich Melnikov , Ivan Vladimirovich Tormyshev , Said Mirfaisovich Sharikpulov , Sergey Viktorovich Bulavkin , Aleksandr Ivanovich Filin , Stepan Artemovich Borovitsky
摘要： A method for guaranteeing fast reactor core subcriticality under conditions of uncertainty involves, after assembling the reactor core, conducting physical measurements of reactor core subcriticality and comparing the obtained characteristics with design values; then, if there is a discrepancy between the values of the obtained characteristics and the design values, installing adjustable reactivity rods in the reactor at the level of a fuel portion of the reactor core, wherein the level of boron-B10 isotope enrichment of the adjustable reactivity rods is selected to be higher than the level of boron-B10 isotope enrichment of compensating rods of the reactor core. The technical result consists in improving the operating conditions of absorbing elements of a compensating group of rods, eliminating the need for increasing the movement thereof, simplifying monitoring technologies used during production, and simplifying the algorithm for safe reactor control.
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6.发明授权Method for prediction of light water reactor fuel defects using a fuel condition index 有权使用燃料条件指数预测轻水反应堆燃料缺陷的方法公开(公告)号：US09472311B2
公开(公告)日：2016-10-18
申请号：US14259955
申请日：2014-04-23
申请人： AREVA Inc.
摘要： A method to assess light water reactor fuel integrity is presented having the steps of granting access in a nuclear reactor fuel pool to at least one of a discharged fuel rod and a nuclear fuel assembly, calculating an operating flux for the fuel rod, measuring a thickness of CRUD on the fuel rod, measuring a thickness of oxide on the fuel rod, calculating a maximized flux for the at least one fuel rod for a position of the one fuel rod in a nuclear reactor, calculating a maximized deposit for the fuel rod, calculating a maximized oxide thickness for the fuel rod, calculating a fuel condition index of the fuel rod, comparing the fuel condition index to an index constant, and removing the fuel rod from operation when the fuel condition index is greater than the index constant.
摘要翻译： 提出了一种评估轻水反应堆燃料完整性的方法，其具有以下步骤：在核反应堆燃料池中进入至排放的燃料棒和核燃料组件中的至少一个，计算燃料棒的工作流量，测量厚度 在燃料棒上测量燃料棒上的氧化物的厚度，计算用于核反应堆中一个燃料棒的位置的至少一个燃料棒的最大通量，计算燃料棒的最大沉积物， 计算燃料棒的最大化氧化物厚度，计算燃料棒的燃料条件指数，将燃料条件指数与指数常数进行比较，以及当燃料条件指数大于指标常数时将燃料棒从操作中去除。
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7.发明授权公开(公告)号：US09281083B2
公开(公告)日：2016-03-08
申请号：US12459591
申请日：2009-07-01
申请人： Charles E. Ahlfeld , John Rogers Gilleland , Roderick A. Hyde , Muriel Y. Ishikawa , David G. McAlees , Nathan P. Myhrvold , Charles Whitmer , Lowell L. Wood, Jr. , George B. Zimmerman
发明人： Charles E. Ahlfeld , John Rogers Gilleland , Roderick A. Hyde , Muriel Y. Ishikawa , David G. McAlees , Nathan P. Myhrvold , Charles Whitmer , Lowell L. Wood, Jr. , George B. Zimmerman
CPC分类号： G21C7/08 , G21C1/022 , G21C1/024 , G21C1/026 , G21C3/07 , G21C5/20 , G21C7/02 , G21C7/06 , G21C7/34 , G21C19/50 , Y02E30/34 , Y02E30/39
摘要： A traveling wave nuclear fission reactor, fuel assembly, and a method of controlling burnup therein. In a traveling wave nuclear fission reactor, a nuclear fission reactor fuel assembly comprises a plurality of nuclear fission fuel rods that are exposed to a deflagration wave burnfront that, in turn, travels through the fuel rods. The excess reactivity is controlled by a plurality of movable neutron absorber structures that are selectively inserted into and withdrawn from the fuel assembly in order to control the excess reactivity and thus the location, speed and shape of the burnfront. Controlling location, speed and shape of the burnfront manages neutron fluence seen by fuel assembly structural materials in order to reduce risk of temperature and irradiation damage to the structural materials.
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8.发明授权公开(公告)号：US08953732B2
公开(公告)日：2015-02-10
申请号：US13314506
申请日：2011-12-08
摘要： A control rod drive system for a nuclear reactor that employs hydraulic cylinders to operate a conventional plunger/gripper drive system to incrementally move control rods into and out of the core of a reactor. The pressure differential for driving hydraulic pistons within the cylinders is obtained from the difference in pressure between the outside and inside of the core barrel of the reactor and control of the pistons is obtained from external solenoids attached to the reactor control system. The external solenoids regulate a charging pump feed to Poppet valves that control the hydraulic feed to the cylinders. A hydraulic piston/cylinder drive is also provided for the shutdown rods which operate in either an all in or out of the core condition.
摘要翻译： 一种用于核反应堆的控制杆驱动系统，其使用液压缸来操作常规的柱塞/夹具驱动系统，以将控制棒逐渐地移动到反应器的芯中并将其移出。 用于驱动气缸内的液压活塞的压力差是从反应堆的芯筒的外部和内部之间的压力差获得的，而活塞的控制由连接到反应器控制系统的外部螺线管获得。 外部螺线管调节充气泵进给到提升阀，控制液压进给气缸。 还提供了用于关闭杆的液压活塞/气缸驱动器，其操作在内部或外部的核心状态。
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公开(公告)号：US08903032B2
公开(公告)日：2014-12-02
申请号：US12527484
申请日：2008-02-22
申请人： Nobuki Uda , Shigeyuki Watanabe , Kazuo Hirota , Hideyuki Sakata , Hideyuki Morita , Makoto Nakajima , Chikara Kurimura , Toshio Ichikawa
发明人： Nobuki Uda , Shigeyuki Watanabe , Kazuo Hirota , Hideyuki Sakata , Hideyuki Morita , Makoto Nakajima , Chikara Kurimura , Toshio Ichikawa
CPC分类号： G21C17/10 , G21C3/322 , G21C17/08 , G21Y2002/207 , G21Y2002/303 , G21Y2004/30
摘要： An upper hole 37A and a lower hole 37B are provided at two positions, namely, upper and lower portions, of a side surface of a guide tube 27, and a thimble tube 22 is pressed against an inner circumferential surface of the guide tube 27, by a differential pressure between coolant inside and outside the upper hole 37A and the lower hole 37B. It is preferable that an upper pressure adjustment hole and a lower pressure adjustment hole are provided at two positions, namely, upper and lower portions, of a side surface of an upper core support column 21, and a coolant flowing into the guide tube from an upper end of the guide tube flows out to the outside from inside the guide tube through a gap between the thimble tube and the upper hole, and also flows out to the outside from inside the upper core support column through the upper pressure adjustment hole, and a coolant flowing into the guide tube from a lower end of the guide tube flows out to the outside from inside the guide tube through a gap between the thimble tube and the lower hole, and also flows out to the outside from inside the upper core support column through the lower pressure adjustment hole.
摘要翻译： 在引导管27的侧面的两个位置，即上下部分设置有上孔37A和下孔37B，并且将套管22压靠在引导管27的内周面上， 通过上部孔37A和下部孔37B的内部和外部的冷却剂之间的压力差。 优选的是，上压力调节孔和下压力调节孔设置在上芯支撑柱21的侧表面的两个位置，即上部和下部，以及从上部芯支撑柱21的侧表面流入导管的冷却剂 引导管的上端通过引导管和上孔之间的间隙从导管的内部流出到外部，并且还通过上压力调节孔从上芯支撑柱的内部流出到外部，并且 从引导管的下端流入引导管的冷却剂通过引导管和下孔之间的间隙从引导管的内部流出到外部，并且还从上部芯支撑体内部流出到外部 柱通过下压力调节孔。
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公开(公告)号：US08711997B2
公开(公告)日：2014-04-29
申请号：US13361543
申请日：2012-01-30
CPC分类号： G21C1/322 , G21C1/02 , G21C1/32 , G21C3/02 , G21C5/00 , G21C7/04 , G21C7/103 , G21Y2002/201 , G21Y2002/207 , G21Y2002/301 , G21Y2002/50 , G21Y2004/30 , Y02E30/34 , Y02E30/35 , Y02E30/39
摘要： A reactor core is immersed in a liquid metal coolant in a core barrel of a liquid metal cooled reactor. The reactor core includes a plurality of fuel assemblies contained in the core barrel, a neutron absorber that absorbs a neutron in the reactor core, and a neutron moderator that moderates a neutron therein so as to control a reactivity of the reactor core. The neutron absorber and the neutron moderator constitute a mixture contained in reactivity control assemblies of the reactor core in the liquid metal coolant prior to immersion of the reactor core. The neutron moderator is composed of zirconium hydride.
摘要翻译： 将反应堆芯浸入液态金属冷却反应器的芯筒中的液态金属冷却剂中。 反应堆堆芯包括在核心筒中包含的多个燃料组件，吸收反应堆芯中的中子的中子吸收器和缓和其中的中子以控制反应堆芯的反应性的中子减速剂。 中子吸收器和中子慢化剂构成在反应堆芯浸入之前液态金属冷却剂中的反应堆芯的反应性控制组件中所含的混合物。 中子减速剂由氢化锆组成。
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