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    NUCLEAR REACTOR FOR HEAT AND POWER GENERATION
    1.
    发明公开
    NUCLEAR REACTOR FOR HEAT AND POWER GENERATION 审中-公开

    公开(公告)号：US20240355491A1

    公开(公告)日：2024-10-24

    申请号：US18756832

    申请日：2024-06-27

    申请人： Oklo Inc.

    发明人： Jacob DeWitte ,  Patrick Everett

    IPC分类号： G21C15/02 ,  G21C15/06 ,  G21C15/26

    CPC分类号： G21C15/02 ,  G21C15/06 ,  G21C15/26

    摘要： A nuclear reactor power system includes: a reactor core comprising a plurality of nuclear fuel elements, each nuclear fuel element comprising: a first cooling channel passing through the nuclear fuel element; and a second cooling channel passing through the nuclear fuel element and fluidly isolated from the first cooling channel; a first cooling system configured to transport a first fluid coolant through the reactor core, the first cooling system fluidly connected to the first cooling channel of each nuclear fuel element; and a second cooling system configured to transport a second fluid coolant through the reactor core, the second cooling system fluidly connected to the second cooling channel of each nuclear fuel element. A direction of first fluid coolant flow through the first cooling channel is the same as a direction of second fluid coolant flow through the second cooling channel.

    SYSTEMS AND METHODS FOR AIRFLOW CONTROL IN REACTOR PASSIVE DECAY HEAT REMOVAL
    3.
    发明申请
    SYSTEMS AND METHODS FOR AIRFLOW CONTROL IN REACTOR PASSIVE DECAY HEAT REMOVAL 有权

    公开(公告)号：US20210319921A1

    公开(公告)日：2021-10-14

    申请号：US17163511

    申请日：2021-01-31

    申请人： GE-Hitachi Nuclear Energy Americas LLC

    发明人： James P. Sineath ,  Dean D. Molinaro ,  William C. Dawn ,  Eric P. Loewen

    IPC分类号： G21C15/02 ,  G21C15/18 ,  G21C9/00 ,  G21C13/02 ,  G21C15/26

    摘要： Damper systems selectively reduce coolant fluid flow in nuclear reactor passive cooling systems, including related RVACS. Systems include a damper that blocks the flow in a coolant conduit and is moveable to open, closed, and intermediate positions. The damper blocks the coolant flow when closed to prevent heat loss, vibration, and development of large temperature gradients, and the damper passively opens, to allow full coolant flow, at failure and in transient scenarios. The damper may be moveable by an attachment extending into the coolant channel that holds the damper in a closed position. When a transient occurs, the resulting loss of power and/or overheat causes the attachment to stop holding the damper, which may be driven by gravity, pressure, a spring, or other passive structure into the open position for full coolant flow. A power source and temperature-dependent switch may detect and stop holding the damper closed in such scenarios.

    NUCLEAR POWER PLANTS
    6.
    发明申请
    NUCLEAR POWER PLANTS 审中-公开

    公开(公告)号：US20190164654A1

    公开(公告)日：2019-05-30

    申请号：US16184606

    申请日：2018-11-08

    申请人： ROLLS-ROYCE plc

    发明人： James C. PALMER

    IPC分类号： G21C15/18 ,  G21C15/02

    摘要： A nuclear power plant, having a reactor pressure vessel; a steam generator arranged to generate steam utilising thermal energy generated within the reactor pressure vessel; and a fluid circuit for transferring thermal energy from the reactor pressure vessel to the steam generator. The plant also has a coolant reservoir for storing coolant for supply to the steam generator under gravity in emergency conditions. The steam generator has a steam drying zone comprising one or more steam separators configured to dry steam; and the steam generator and coolant reservoir are configured such that when coolant is supplied from the coolant reservoir to the steam generator in emergency conditions the coolant stays below a threshold level defined by the steam drying zone.

    Nuclear reactor with screw-nut drive of core reactivity control members
    7.
    发明授权
    Nuclear reactor with screw-nut drive of core reactivity control members 有权

    公开(公告)号：US10163530B2

    公开(公告)日：2018-12-25

    申请号：US15748182

    申请日：2016-07-28

    申请人： Société Technique pour l'Energie Atomique

    发明人： Lionel Ranc ,  Charles Dumanois ,  Jean-Luc Rouiller

    IPC分类号： H04B1/38 ,  G21C7/14 ,  G21C1/32 ,  G21C7/12 ,  G21C9/02 ,  G21C7/113 ,  G21C15/02

    摘要： A nuclear reactor includes a plurality of mechanisms (11) that drive the contact members (9) that control the reactivity, of the core. Each mechanism includes a driving member (21) including a driving part (23) forming one out of a screw or a nut, a member (27) for applying a rotary torque of the rotor (19) to the driving member (21), a driven member (29) translationally connected to one of the control members (9) and including the other out of screw and a nut; and a member (33) that is selectively mobile between a position of blocking the driving member (21) and a position of releasing the driving member (21). In each drive mechanism (11), the motor (15) is fully immersed in the primary coolant inside the vessel (3); the rotor (19) has a central passage (35), the member for applying the rotary torque (27) being situated in or near the central passage (35); the driving member (21) includes a connecting part (37) engaged in the central passage (35) and collaborating with the member for applying the rotary torque (27), the connecting part (37) being free to effect a translational movement inside the central passage (35) with respect to the rotor (19) when the or each blocking member (33) is in the releasing position.

    Containment vessel drain system
    8.
    发明授权
    Containment vessel drain system 有权

    公开(公告)号：US09881704B2

    公开(公告)日：2018-01-30

    申请号：US14607968

    申请日：2015-01-28

    申请人： NuScale Power, LLC

    发明人： Scott G. Harris

    IPC分类号： G21C15/02 ,  G21C13/02

    CPC分类号： G21C15/02 ,  G21C13/022 ,  Y02E30/40

    摘要： A system for draining a containment vessel may include a drain inlet located in a lower portion of the containment vessel. The containment vessel may be at least partially filled with a liquid, and the drain inlet may be located below a surface of the liquid. The system may further comprise an inlet located in an upper portion of the containment vessel. The inlet may be configured to insert pressurized gas into the containment vessel to form a pressurized region above the surface of the liquid, and the pressurized region may operate to apply a surface pressure that forces the liquid into the drain inlet. Additionally, a fluid separation device may be operatively connected to the drain inlet. The fluid separation device may be configured to separate the liquid from the pressurized gas that enters the drain inlet after the surface of the liquid falls below the drain inlet.