公开(公告)号：US20240304345A1

公开(公告)日：2024-09-12

申请号：US18178883

申请日：2023-03-06

Applicant: GE-Hitachi Nuclear Energy Americas, LLC

Inventor： Jay Allen PERRY ,  Edward Sang Koon HAN ,  John W. HOLBROOK, II ,  Nathan John PRESLEY ,  Tobias E. GREIDER ,  Daniel LeRoy PIERCE

IPC: G21C9/04 ,  G21C11/08 ,  G21C15/02

CPC classification number: G21C9/04 ,  G21C11/088 ,  G21C15/12

Abstract: A Modular Isolated Reactor Support System (MIRSS) assembly includes a cylindrical reactor support structure configured to structurally support a reactor enclosure system on seismic isolators, a collector cylinder configured to at least partially define a riser annulus between an inner cylindrical surface of the collector cylinder and an outer sidewall surface of the reactor enclosure system structurally supported by the cylindrical reactor support structure, and a divider wall configured to at least partially define a downcomer annulus between an outer cylindrical surface of the divider wall and a reactor building, and a plurality of exhaust ducts extending from the collector cylinder and through an interior of the cylindrical reactor support structure.

公开(公告)号：US20240194361A1

公开(公告)日：2024-06-13

申请号：US18077293

申请日：2022-12-08

Applicant: GE-Hitachi Nuclear Energy Americas LLC

Inventor： Hanying Liu ,  Charles L. Heck

IPC: G21C15/02 ,  F25B21/02 ,  G21C15/28

CPC classification number: G21C15/02 ,  F25B21/02 ,  G21C15/28

Abstract: Systems and methods provide a thermoelectric cooler to cool a variety of high-energy power plant geometries and configurations. The thermoelectric cooler is thermally connected at heat sink side to a component to be cooled, including coolant structural components, for the plant. A heat rejection side of the cooler is thermally connected to a heat sink, including ambient air, a plant structure, or a fluid coolant. Electricity may be selectively applied to the cooler to generate a temperature difference and heat flux between the heat sinking side and heat rejection side. Radiation-resilient materials may be used in the cooler in the case of nuclear installations. Power sources include batteries, plant or grid electrical power, dedicated generators, or any other power source, potentially at relatively low ratings, such as only hundreds of watts, that will provide desired thermoelectric cooling.

公开(公告)号：US20230290529A1

公开(公告)日：2023-09-14

申请号：US18017135

申请日：2021-07-12

Applicant: KOREA HYDRO & NUCLEAR POWER CO., LTD.

Inventor： Ho Rim MOON ,  Sang Hee KANG ,  Huiun HA

IPC: G21C15/02 ,  G21C15/18 ,  G21D3/06

CPC classification number: G21C15/02 ,  G21C15/18 ,  G21D3/06

Abstract: Proposed is a system for utilizing unused heat-exchange water of a passive auxiliary feedwater system, and a reactor cooling control method utilizing the unused heat-exchange water of the passive auxiliary feedwater system and, more specifically, a system for utilizing unused heat-exchange water of a passive auxiliary feedwater system, and a reactor cooling control method utilizing the unused heat-exchange water of the passive auxiliary feedwater system, which may allow the unused heat exchange water remaining after heat exchange in the passive condensation tank to be used as cooling water, thereby increasing the efficiency of reactor cooling and increasing the efficiency of initial response in an event of a reactor accident. To this end, the proposed system includes a passive condensation tank, a condenser, a steam supply line, and a condensate water recovery line and is characterized by that a residual water discharge flow path is arranged at the inside thereof.

公开(公告)号：US11340023B1

公开(公告)日：2022-05-24

申请号：US15921800

申请日：2018-03-15

Applicant: Triad National Security, LLC

Inventor： 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: F28D15/04 ,  F28D15/02 ,  G21C15/02 ,  G21C15/257 ,  G21C15/243 ,  F28D21/00

Abstract: 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：US11079054B2

公开(公告)日：2021-08-03

申请号：US15735374

申请日：2016-06-22

Applicant: ATOMIC ENERGY OF CANADA LIMITED

Inventor： James M. King ,  Andrew B. Kittmer ,  Terry J. Schaubel

IPC: F16L39/00 ,  F16L9/19 ,  F28F9/26 ,  F28D7/10 ,  F28F13/06 ,  G21C3/322 ,  G21C15/02 ,  G21C3/328 ,  G21C1/20 ,  G21C21/00

Abstract: A cross-over fluid coupling includes a first coupling end and a second coupling end. A plurality of first conduits have inner ends disposed toward the first coupling end and outer ends spaced apart from the inner end toward the second coupling end and being outboard of the inner end. A plurality of second conduits have outer ends that are disposed toward the first coupling end and positioned laterally outboard of the inner end of at least one of the first conduits, and inner ends that are spaced apart from the outer end toward the second coupling end in the axial direction and is laterally inboard of the outer end of the at least one of the first conduits.

公开(公告)号：US10937557B2

公开(公告)日：2021-03-02

申请号：US15785548

申请日：2017-10-17

Applicant: GE-Hitachi Nuclear Energy Americas LLC

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

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

Abstract: 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.

公开(公告)号：US10677502B2

公开(公告)日：2020-06-09

申请号：US15893811

申请日：2018-02-12

Applicant: Kabushiki Kaisha Toshiba

Inventor： Takuya Hongo ,  Rei Kimura ,  Tomonao Takamatsu ,  Chikako Iwaki ,  Hideki Horie

IPC: F25B39/00 ,  F28D15/00 ,  F25B47/00 ,  F28D15/02 ,  G21C15/02 ,  G21C15/28 ,  F25B23/00 ,  H01L23/427 ,  F28D15/06 ,  F25B39/04 ,  F25B39/02 ,  F28D21/00

Abstract: According to one embodiment, a heat transport apparatus includes an evaporator, a cooling unit, a channel structure, and a heating mechanism. The evaporator vaporizes a refrigerant by heat generated by a heat-generating element. The cooling unit is provided above the evaporator and cools and condenses the refrigerant vaporized in the evaporator. The channel structure constitutes a channel through which the refrigerant circulates between the evaporator and the cooling unit. The heating mechanism heats the cooling unit and suppresses solidification of the refrigerant at the cooling unit.

公开(公告)号：US10600520B2

公开(公告)日：2020-03-24

申请号：US15483466

申请日：2017-04-10

Applicant: BWXT mPower, Inc.

Inventor： Tyler A. Edwards ,  Scott J. Shargots

IPC: G21C13/028 ,  G21C13/02 ,  G21C13/04 ,  G21C1/32 ,  G21C15/00 ,  G21C15/02

Abstract: A riser cone has a lower end sized to engage a cylindrical lower riser section of a nuclear reactor and an upper end sized to engage a cylindrical upper riser section of the nuclear reactor. The riser cone defines a compression sealing ring that is compressed between the lower riser section and the upper riser section in the assembled nuclear reactor. In some embodiments the riser cone comprises: a lower element defining the lower end of the riser cone; an upper element defining the upper end of the riser cone; and a compliance spring compressed between the lower element and the upper element. In some embodiments the riser cone comprises a frustoconical compression sealing ring accommodating a reduced diameter of the upper riser section as compared with the diameter of the lower riser section.

公开(公告)号：US10553322B2

公开(公告)日：2020-02-04

申请号：US14867936

申请日：2015-09-28

Applicant: GE-HITACHI NUCLEAR ENERGY AMERICAS LLC

Inventor： Mitra Hosseini ,  Gerald A. Deaver ,  Jesus G. Diaz-Quiroz ,  Randy M. Brown

IPC: G21C15/02 ,  F28F9/02

Abstract: Modular flow control systems include several differently-shaped structures to achieve desired flow characteristics in fluid flow. Systems include one or many plates held in desired positions by a retainer within the flow. The plates are uniquely shaped based on their position, or vice versa, to shape flow in a desired manner. The plates may fill an entire flow area or may extend partially throughout the area. Plates can take on any shape and are useable in systems installed in any type of flow conduit. When used in a PCCS upper manifold in a nuclear reactor, a chevron plate directly below the inlet divides flow along the entire upper manifold. Perforated plates allow flow to pass at ends of the PCCS upper manifold. The plates can be installed along a grooved edge during an access period and held in static position by filling the length of the PCCS upper manifold.

公开(公告)号：US10446284B2

公开(公告)日：2019-10-15

申请号：US15377601

申请日：2016-12-13

Applicant: TerraPower, LLC

Inventor： Peter W. Gibbons ,  P. Harley Park

IPC: G21C17/116 ,  G21C1/02 ,  G21C15/02 ,  G21C5/00

Abstract: A conduit housing includes a top face, a pair of side faces disposed opposite each other and adjacent to the top face, a front side, and a rear side. The top face includes a plurality of vertical conduit ports arranged in a plurality of rows. The front side is positioned between the pair of side faces and defines a plurality of stepped faces. The rear side is disposed opposite the front side and adjacent the top face. The stepped faces include a plurality of downward faces and each of the plurality of downward faces defines a downward face plane. The stepped faces also include a plurality of upward faces, where each of the plurality of upward faces defines an upward face plane. Each upward face includes a plurality of pitched conduit ports.