公开(公告)号：US20230307150A1

公开(公告)日：2023-09-28

申请号：US18016556

申请日：2021-07-12

申请人： KOREA HYDRO & NUCLEAR POWER CO., LTD.

发明人： Ho Rim MOON ,  Sang Hee KANG ,  Huiun HA

IPC分类号： G21C15/18 ,  G21C15/243

CPC分类号： G21C15/182 ,  G21C15/243

摘要： Proposed is a reactor cooling system for cooling down a reactor damaged by a disaster accident and a reactor cooling method using same using contaminated water generated at a nuclear reactor as a cooling water source for cooling the nuclear reactor after the accident, thereby maximally suppressing discharge of the contaminated water into the sea. To this end, the reactor cooling system prosed above includes a nuclear power generation facility, a seawater storage tank, a seawater inflow flow path for introducing the seawater into the seawater storage tank and a seawater discharge flow path for discharging the seawater from the seawater storage tank to the sea, connected to one end and another end of the seawater storage tank, respectively, a heat exchanger installed in a water storage space of the seawater storage tank, a contaminated water supply flow path, and a contaminated water discharge flow path.

公开(公告)号：US11521756B2

公开(公告)日：2022-12-06

申请号：US16613792

申请日：2018-05-22

申请人： Claudio Filippone

发明人： Claudio Filippone

IPC分类号： G21C3/32 ,  G21C3/34 ,  G21C11/06 ,  G21C11/08 ,  G21C13/028 ,  G21C15/243 ,  G21C5/06 ,  G21C13/024 ,  G21C3/38

摘要： The fuel cartridge may include a plurality of fuel channels, a first header disposed on a first side of a fuel matrix, a second header disposed on a second side of the fuel matrix opposite to the first side, and a plurality of cooling tubes through which a working fluid flows. Each of the plurality of cooling tubes may pass through each corresponding cooling channel of the plurality of cooling channels, where each of the plurality of cooling tubes has a first end connected to the first header and a second end connected to the second header. The fuel cartridge may include an interior space for sealingly containing the fuel matrix may include a pressure boundary independent from an interior of the plurality of cooling tubes, such that the interior space is not in fluid communication with the plurality of cooling tubes.

公开(公告)号：US11348699B2

公开(公告)日：2022-05-31

申请号：US16959875

申请日：2018-08-31

申请人： KOREA ATOMIC ENERGY RESEARCH INSTITUTE ,  KING ABDULLAH CITY FOR ATOMIC AND RENEWABLE ENERGY

发明人： Youngin Kim ,  Hyungi Yoon ,  Seungyeob Ryu ,  Youngmin Bae ,  Joohyung Moon ,  Hunsik Han ,  Soojai Shin ,  Cheongbong Chang ,  Seok Kim ,  Junewoo Kee ,  Hyunjun Cho ,  Minkyu Lee ,  Bonghyun Cho

IPC分类号： G21C15/18 ,  G21C9/012 ,  G21C15/243

摘要： A safety injection device includes, a cooling water storage section accommodating cooling water injected into the reactor coolant system, a power producing section producing power with steam discharged from the reactor coolant system in case of an accident, a steam supply pipe transmitting steam discharged from the reactor coolant system to the power producing section, a steam discharge pipe discharging steam used to drive the power producing section and a safety injection line supplying cooling water accommodated in the cooling water storage section to the inside of the reactor coolant system. In addition, cooling water accommodated in the cooling water storage section is supplied to the inside of the reactor coolant system, based on the power produced by the power producing section, through a cooling water inlet pipe connecting the cooling water storage section and the power producing section.

公开(公告)号：US11340023B1

公开(公告)日：2022-05-24

申请号：US15921800

申请日：2018-03-15

申请人： Triad National Security, LLC

发明人： Robert S. Reid ,  Robert A. Zimmerman ,  Cody M. Williams ,  Morgan T. Biel ,  Stephen J. Obrey ,  Todd A. Jankowski ,  Justin Simpson ,  Martin J. Ward ,  Lydia Wermer

IPC分类号： F28D15/04 ,  F28D15/02 ,  G21C15/02 ,  G21C15/257 ,  G21C15/243 ,  F28D21/00

摘要： A pump assisted heat pipe may combine the low mass flow rate required of latent heat pipe transfer loops with a hermetically sealed pump to overcome the typical heat pipe capillary limit. This may result in a device with substantially higher heat transfer capacity over conventional pumped single-phase loops, heat pipes, loop heat pipes, and capillary pumped loops with very modest power requirements to operate. Further, one or more embodiments overcome the gravitation limitations in the conventional heat pipe configuration, e.g., when the heat addition zone is above the heat rejection zone, the capillary forces are required to transfer the liquid from the heat rejection zone to the heat addition zone against gravity.

公开(公告)号：US20210174976A1

公开(公告)日：2021-06-10

申请号：US16613792

申请日：2018-05-22

申请人： Claudio FILIPPONE

发明人： Filippone Claudio

IPC分类号： G21C13/024 ,  G21C11/06 ,  G21C15/243 ,  G21C11/08 ,  G21C13/028 ,  G21C3/34

摘要： The fuel cartridge may include a plurality of fuel channels, a first header disposed on a first side of a fuel matrix, a second header disposed on a second side of the fuel matrix opposite to the first side, and a plurality of cooling tubes through which a working fluid flows. Each of the plurality of cooling tubes may pass through each corresponding cooling channel of the plurality of cooling channels, where each of the plurality of cooling tubes has a first end connected to the first header and a second end connected to the second header. The fuel cartridge may include an interior space for sealingly containing the fuel matrix may include a pressure boundary independent from an interior of the plurality of cooling tubes, such that the interior space is not in fluid communication with the plurality of cooling tubes.

公开(公告)号：US20210110943A1

公开(公告)日：2021-04-15

申请号：US17131922

申请日：2020-12-23

申请人： BWXT Canada Ltd.

发明人： Kareem M.A. ALY

IPC分类号： G21C15/22 ,  F22B1/02 ,  F22B37/20 ,  F28D7/06 ,  F28F9/013 ,  G21C15/14 ,  G21C15/24 ,  G21C15/243 ,  G21D1/00

摘要： Arrangement for supporting U-bend tube sections in the high heat environment of steam generators using flat bars. The invention uses a combination of thicker and thinner flat bars to impart a serpentine path to the arc of the normally curvilinear U-tubes. The support system accommodates the dilation and contraction of coolant tubes and other elements caused by the extreme and varying conditions inside a steam generator, and which can cause gaps between coolant tubes and prior art tube support bars. Bars of alternating thickness provide alternating offsets to tensionally push and support each tube on multiple sides and in multiple locations, and this tension keeps the tubes in contact with at least some flat bars on multiple sides regardless of size and shape changes. Support arrangement includes a set of fan bars, each fan bar including thick and thin flat bars projecting up and out from a collector bar.

公开(公告)号：US20210090753A1

公开(公告)日：2021-03-25

申请号：US16582638

申请日：2019-09-25

申请人： GE-Hitachi Nuclear Energy Americas LLC

发明人： Derek Bass ,  Christer N. Dahlgren

IPC分类号： G21C19/307 ,  G21C15/243 ,  G21D1/00 ,  F22B35/00

摘要： Combined cleanup and heat sink systems work with nuclear reactor coolant loops. Combined systems may join hotter and colder sections of the coolant loops in parallel with any steam generator or other extractor and provide optional heat removal between the same. Combined systems also remove impurities or debris from a fluid coolant without significant heat loss from the coolant. A cooler in the combined system may increase in capacity or be augmented in number to move between purifying cooling and major heat removal from the coolant, potentially as an emergency cooler. The cooler may be joined to the hotter and colder sections through valved flow paths depending on desired functionality. Sections of the coolant loops may be fully above the cooler, which may be above the reactor, to drive flow by gravity and enhance isolation of sections of the coolant loop.

公开(公告)号：US20200350085A1

公开(公告)日：2020-11-05

申请号：US16934479

申请日：2020-07-21

申请人： BWXT Canada Ltd.

发明人： Kareem M.A. ALY

IPC分类号： G21C15/22 ,  F22B37/20 ,  F28D7/06 ,  F28F9/013 ,  F22B1/02 ,  G21C15/14 ,  G21C15/24 ,  G21C15/243 ,  G21D1/00

摘要： Arrangement for supporting U-bend tube sections in the high heat environment of steam generators using flat bars. The invention uses a combination of thicker and thinner flat bars to impart a serpentine path to the arc of the normally curvilinear U-tubes. The support system accommodates the dilation and contraction of coolant tubes and other elements caused by the extreme and varying conditions inside a steam generator, and which can cause gaps between coolant tubes and prior art tube support bars. Bars of alternating thickness provide alternating offsets to tensionally push and support each tube on multiple sides and in multiple locations, and this tension keeps the tubes in contact with at least some flat bars on multiple sides regardless of size and shape changes. Support arrangement includes a set of fan bars, each fan bar including thick and thin flat bars projecting up and out from a collector bar.

公开(公告)号：US10811147B2

公开(公告)日：2020-10-20

申请号：US15108767

申请日：2014-12-29

申请人： KOREA ATOMIC ENERGY RESEARCH INSTITUTE

发明人： Young In Kim ,  Keung Koo Kim ,  Jae Joo Ha ,  Ju Hyeon Yoon ,  Young Min Bae ,  Soo Jai Shin ,  Hun Sik Han ,  Kyung Jun Kang ,  Tae Wan Kim

IPC分类号： G21C15/18 ,  G21C1/32 ,  G21C9/012 ,  G21C15/243 ,  G21D1/00 ,  F22B1/02 ,  G21C15/26 ,  G21C15/08

摘要： The present invention provides a passive residual heat removal system and an atomic power plant comprising the same, the passive heat removal system comprising: a plate-type heat exchanger for causing heat exchange between a primary system fluid or a secondary system fluid which, in order to remove sensible heat from an atomic reactor cooling material system and residual heat from a reactor core, has received the sensible heat and the residual heat, and a cooling fluid which has been introduced from outside of a containment unit; and circulation piping for connecting the atomic reactor cooling material system to the plate-type heat exchanger, thereby forming a circulation channel of the primary system fluid, or connecting a steam generator, which is arranged at the boundary between the primary and secondary systems, to the plate-type heat exchanger, thereby forming a circulation channel of the secondary system fluid.

公开(公告)号：US10665352B2

公开(公告)日：2020-05-26

申请号：US15801736

申请日：2017-11-02

申请人： Westinghouse Electric Sweden AB

发明人： Sven Perzon ,  Yann Le Moigne ,  Henrik Remahl ,  Tobias Strömgren

IPC分类号： G21C3/322 ,  G21C3/33 ,  G21C1/08 ,  G21C15/243 ,  G21C5/06

摘要： A core plate assembly for a boiling water reactor, and a method of performing work thereon are disclosed. The core plate assembly comprises a core plate having through-going apertures, and a beam structure comprising parallel first beams and parallel second beams being perpendicular to the first beams. The beams enclose a plurality of rectangular areas each enclosing four of the through-going apertures. Control rod guide tubes are aligned with a respective one of the through-going apertures. A transition pieces is received in a respective one of the control rod guide tubes, and has four passages for communicating with a respective fuel assembly. Each passage permits a coolant flow into the respective fuel assembly. A flow inlet is provided for the coolant into each passage. At least one of the flow inlets has a cross-sectional shape deviating from a circular shape.