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    NUCLEAR STEAM SUPPLY SYSTEM
    32.
    发明申请
    NUCLEAR STEAM SUPPLY SYSTEM 审中-公开

    公开(公告)号：US20190057789A1

    公开(公告)日：2019-02-21

    申请号：US16126100

    申请日：2018-09-10

    申请人： SMR Inventec, LLC

    发明人： Krishna P. Singh ,  Joseph Rajkumar

    IPC分类号： G21D1/00 ,  F22B1/02 ,  F01K5/02 ,  G21C15/24 ,  G21C15/00 ,  G21C1/32 ,  G21D1/04

    摘要： A nuclear steam supply system having a start-up sub-system for heating a primary coolant. In one embodiment, the invention can be a nuclear steam supply system comprising: a reactor vessel having an internal cavity, a reactor core comprising nuclear fuel disposed within the internal cavity; a steam generating vessel fluidly coupled to the reactor vessel; a primary coolant loop formed within the reactor vessel and the steam generating vessel, a primary coolant in the primary coolant loop; and a start-up sub-system fluidly coupled to the primary coolant loop, the start-up sub-system configured to: (1) receive a portion of the primary coolant from the primary coolant loop; (2) heat the portion of the primary coolant to form a heated portion of the primary coolant; and (3) inject the heated portion of the primary coolant into the primary coolant loop.

    Shutdown system for a nuclear steam supply system
    33.
    发明授权
    Shutdown system for a nuclear steam supply system 有权

    公开(公告)号：US10115487B2

    公开(公告)日：2018-10-30

    申请号：US14433394

    申请日：2013-10-04

    申请人： SMR Inventec, LLC

    发明人： Krishna P. Singh ,  Joseph Rajkumar

    IPC分类号： G21C15/18 ,  G21D3/14 ,  F22B1/02 ,  G21C1/32 ,  G21C15/00 ,  G21D1/00 ,  G21D1/04

    摘要： A nuclear steam supply system having a shutdown system for removing residual decay heat generated by a nuclear fuel core. The steam supply system may utilize gravity-driven primary coolant circulation through hydraulic-ally interconnected reactor and steam generating vessels forming the steam supply system. The shutdown system may comprise primary and secondary coolant systems. The primary coolant cooling system may include a jet pump comprising an injection nozzle disposed inside the steam generating vessel A portion of the circulating primary coolant is extracted, pressurized and returned to the steam generating vessel to induce coolant circulation under reactor shutdown conditions. The extracted primary coolant may further be cooled before return to the steam generating vessel in some operating modes. The secondary coolant cooling system includes a pumped and cooled flow circuit operating to circulate and cool the secondary coolant, which in tun extracts heat from and cools the primary coolant.

    Nuclear stream supply system
    34.
    发明授权
    Nuclear stream supply system 有权

    公开(公告)号：US10102936B2

    公开(公告)日：2018-10-16

    申请号：US14620390

    申请日：2015-02-12

    申请人： SMR Inventec, LLC

    发明人： Krishna P. Singh ,  Joseph Rajkumar

    IPC分类号： G21D1/00 ,  G21D1/04 ,  G21C15/24 ,  G21C15/00 ,  G21C1/32 ,  F22B1/02 ,  F01K5/02

    摘要： A nuclear steam supply system having a start-up sub-system for heating a primary coolant. In one embodiment, the invention can be a nuclear steam supply system comprising: a reactor vessel having an internal cavity, a reactor core comprising nuclear fuel disposed within the internal cavity; a steam generating vessel fluidly coupled to the reactor vessel; a primary coolant loop formed within the reactor vessel and the steam generating vessel, a primary coolant in the primary coolant loop; and a start-up sub-system fluidly coupled to the primary coolant loop, the start-up sub-system configured to: (1) receive a portion of the primary coolant from the primary coolant loop; (2) heat the portion of the primary coolant to form a heated portion of the primary coolant; and (3) inject the heated portion of the primary coolant into the primary coolant loop.

    LOSS-OF-COOLANT ACCIDENT REACTOR COOLING SYSTEM
    35.
    发明申请
    LOSS-OF-COOLANT ACCIDENT REACTOR COOLING SYSTEM 审中-公开

    公开(公告)号：US20180254113A1

    公开(公告)日：2018-09-06

    申请号：US15901249

    申请日：2018-02-21

    申请人： SMR Inventec, LLC

    发明人： Krishna P. Singh ,  Joseph Rajkumar

    IPC分类号： G21C15/18 ,  G21D1/00 ,  G21C13/02

    摘要： A nuclear reactor cooling system with passive cooling capabilities operable during a loss-of-coolant accident (LOCA) without available electric power. The system includes a reactor vessel with nuclear fuel core located in a reactor well. An in-containment water storage tank is fluidly coupled to the reactor well and holds an inventory of cooling water. During a LOCA event, the tank floods the reactor well with water. Eventually, the water heated by decay heat from the reactor vaporizes producing steam. The steam flows to an in-containment heat exchanger and condenses. The condensate is returned to the reactor well in a closed flow loop system in which flow may circulate solely via gravity from changes in phase and density of the water. In one embodiment, the heat exchanger may be an array of heat dissipater ducts mounted on the wall of the inner containment vessel surrounded by a heat sink.

    NUCLEAR STEAM SUPPLY SYSTEM
    36.
    发明申请
    NUCLEAR STEAM SUPPLY SYSTEM 审中-公开

    公开(公告)号：US20180144838A1

    公开(公告)日：2018-05-24

    申请号：US15859934

    申请日：2018-01-02

    申请人： SMR Inventec, LLC

    发明人： Krishna P. Singh ,  Joseph Rajkumar

    IPC分类号： G21D1/00 ,  G21C15/243

    摘要： A nuclear steam supply system includes an elongated reactor vessel having an internal cavity with a central axis, a reactor core having nuclear fuel disposed within the internal cavity, and a steam generating vessel having at least one heat exchanger section, the steam generating vessel being fluidicly coupled to the reactor vessel. The reactor vessel includes a shell having an upper flange portion and a head having a head flange portion. The upper flange portion is coupled to the head flange portion, wherein the upper flange portion extends into the internal cavity, and the head flange portion extends outward from the internal cavity.

    EXTERNALLY INTEGRATED STEAM GENERATOR TYPE SMALL MODULAR REACTOR
    39.
    发明申请
    EXTERNALLY INTEGRATED STEAM GENERATOR TYPE SMALL MODULAR REACTOR 审中-公开

    公开(公告)号：US20180033505A1

    公开(公告)日：2018-02-01

    申请号：US15445376

    申请日：2017-02-28

    申请人： KEPCO ENGINEERING & CONSTRUCTION COMPANY, INC.

    发明人： Sung Ho PARK ,  Jong Min KIM ,  Kyu Wan KIM

    IPC分类号： G21D1/00 ,  F22B21/04 ,  G21C15/12

    CPC分类号： G21D1/006 ,  F16T1/00 ,  F22B21/04 ,  G21C1/322 ,  G21C15/12 ,  G21C15/16 ,  G21Y2004/305 ,  Y02E30/40

    摘要： In an externally integrated steam generator type small modular reactor, a steam generator is arranged along the circumference of a reactor vessel cylindrical shell, and a steam drum is arranged along the circumference of the steam generator. The small modular reactor includes: a nuclear reactor including a hemispherical upper head, the reactor vessel cylindrical shell coupled to the upper head and extending downward from the upper head in a cylindrical shape, and a hemispherical lower head provided on a lower portion of the reactor vessel cylindrical shell, wherein a core is placed in the nuclear reactor; the steam generator surrounding all around the reactor vessel cylindrical shell and including a first penetration hole communicating with an inside of the nuclear reactor; and the steam drum surrounding the circumference of the steam generator and including a second penetration hole communicating with an inside of the steam generator.