公开(公告)号：US11527334B2

公开(公告)日：2022-12-13

申请号：US16236994

申请日：2018-12-31

申请人： NuScale Power, LLC

发明人： Larry Linik ,  Allyson Callaway ,  Ben Bristol ,  Kenneth Rooks

IPC分类号： G21C9/02 ,  G21C7/22 ,  G21C9/033 ,  G21C9/027 ,  F22B35/00 ,  G21C7/24 ,  G21D1/00 ,  G21D3/02 ,  G21D3/14 ,  G21D3/16 ,  G21D3/18 ,  G21D5/08 ,  G21C1/02 ,  G21C7/12 ,  G21C7/08 ,  G21C13/02

摘要： A nuclear power system includes a reactor vessel that includes a reactor core mounted within a volume of the reactor vessel. The reactor core includes one or more nuclear fuel assemblies configured to generate a nuclear fission reaction. The nuclear power system further includes a containment vessel sized to enclose the reactor vessel such that an open volume is defined between the containment vessel and the reactor vessel. A boron injection system is positioned in the open volume of the containment vessel and includes an amount of boron sufficient to stop the nuclear fission reaction or maintain the nuclear fission reaction at a sub-critical state. The boron injection system is positioned to deliver the amount of boron into the open volume.

公开(公告)号：US20220246317A1

公开(公告)日：2022-08-04

申请号：US17693685

申请日：2022-03-14

申请人： NuScale Power, LLC

发明人： Allyson Callaway ,  Ben Bristol ,  Kenneth Rooks ,  Larry Linik

IPC分类号： G21C7/22 ,  G21D3/14 ,  G21D3/16 ,  G21D3/18 ,  G21C7/12 ,  G21C9/033

摘要： A nuclear power system includes a reactor vessel that includes a reactor core that includes nuclear fuel assemblies configured to generate a nuclear fission reaction; a riser positioned above the reactor core; a primary coolant flow path that extends from a bottom portion of the volume through the reactor core and through an annulus between the riser and the reactor vessel; a primary coolant that circulates through the primary coolant flow path to receive heat from the nuclear fission reaction and release the heat to generate electric power in a power generation system; and a control rod assembly system positioned in the reactor vessel and configured to position control rods in only two discrete positions.

公开(公告)号：US11380448B2

公开(公告)日：2022-07-05

申请号：US16237059

申请日：2018-12-31

申请人： NuScale Power, LLC

发明人： Allyson Callaway ,  Ben Bristol ,  Kenneth Rooks ,  Larry Linik

IPC分类号： G21C7/12 ,  G21D3/14 ,  G21D3/16 ,  G21D3/18 ,  G21C7/22 ,  G21C9/033 ,  G21C7/24 ,  F22B35/00 ,  G21D1/00 ,  G21D3/02 ,  G21D5/08 ,  G21C1/02 ,  G21C7/08 ,  G21C9/02 ,  G21C13/02

摘要： A nuclear power system includes a reactor vessel that includes a reactor core mounted therein. The reactor core includes nuclear fuel assemblies configured to generate a nuclear fission reaction. The reaction vessel does not include any control rod assemblies therein. The nuclear power system further includes a riser positioned above the reactor core, a primary coolant flow path, a primary coolant that circulates through the primary coolant flow path to receive heat from the nuclear fission reaction and release the received heat to generate electric power in a power generation, and a control system communicably coupled to the power generation system and configured to control a power output of the nuclear fission reaction independent of any control rod assemblies.

公开(公告)号：US11309094B2

公开(公告)日：2022-04-19

申请号：US16237027

申请日：2018-12-31

申请人： NuScale Power, LLC

发明人： Allyson Callaway ,  Ben Bristol ,  Kenneth Rooks ,  Larry Linik

IPC分类号： G21C7/12 ,  G21D3/14 ,  G21D3/16 ,  G21D3/18 ,  G21C7/22 ,  G21C9/033 ,  F22B35/00 ,  G21C7/24 ,  G21D1/00 ,  G21D3/02 ,  G21D5/08 ,  G21C1/02 ,  G21C7/08 ,  G21C9/02 ,  G21C13/02

摘要： A nuclear power system includes a reactor vessel that includes a reactor core that includes nuclear fuel assemblies configured to generate a nuclear fission reaction. A representative nuclear power system further includes a riser positioned above the reactor core and a primary coolant flow path that extends from a bottom portion of the reactor vessel, through the reactor core, and through an annulus between the riser and the reactor vessel. A primary coolant circulates through the primary coolant flow path to receive heat from the nuclear fission reaction and release the heat to a power generation system configured to generate electric power. The nuclear power system further includes a control rod assembly system positioned in the reactor vessel and configured to position control rods in only two discrete positions.

公开(公告)号：US20200027604A1

公开(公告)日：2020-01-23

申请号：US16237059

申请日：2018-12-31

申请人： NuScale Power, LLC

发明人： Allyson Callaway ,  Ben Bristol ,  Kenneth Rooks ,  Larry Linik

IPC分类号： G21D3/18 ,  G21D1/00 ,  G21D3/02 ,  G21D3/14 ,  G21D3/16 ,  G21D5/08 ,  F22B35/00 ,  G21C7/24

摘要： A nuclear power system includes a reactor vessel that includes a reactor core mounted, the reactor core including nuclear fuel assemblies configured to generate a nuclear fission reaction; a riser positioned above the reactor core; a primary coolant flow path that extends from a bottom portion of the volume below the reactor core, through the reactor core, within the riser, and through an annulus between the riser and the reactor vessel back to the bottom portion of the volume; a primary coolant that circulates through the primary coolant flow path to receive heat from the nuclear fission reaction and release the received heat to generate electric power in a power generation system fluidly or thermally coupled to the primary coolant flow path; and a control system communicably coupled to the power generation system and configured to control a power output of the nuclear fission reaction independent of any control rod assemblies during the normal operation.

公开(公告)号：US5192493A

公开(公告)日：1993-03-09

申请号：US400837

申请日：1989-08-30

申请人： Lawrence E. Erin ,  William J. Catullo, Jr. ,  Richard E. Paris ,  John M. Gallagher

发明人： Lawrence E. Erin ,  William J. Catullo, Jr. ,  Richard E. Paris ,  John M. Gallagher

IPC分类号： G21C17/035 ,  G21D3/00 ,  G21D3/14

CPC分类号： G21D3/14 ,  Y02E30/40

摘要： A system for improving the performance of nuclear power plant feedwater control systems and simplifying steam generator low water level reactor protection logic includes a plurality of water level channels for measuring steam generator water level and generating a plurality of signals representative thereof. The median steam generator water level signal is selected from among the plurality of steam generator water level signals. The median steam generator water level signal is then communicated to the feedwater control system through an output interface.

公开(公告)号：US4728481A

公开(公告)日：1988-03-01

申请号：US932245

申请日：1986-11-19

申请人： Jacques M. Geets

发明人： Jacques M. Geets

IPC分类号： F22D5/30 ,  F22B35/00 ,  F22D5/26 ,  G21D3/14 ,  G21C7/36

CPC分类号： F22B35/004 ,  G21D3/14 ,  Y02E30/40

摘要： A full range steam generator level control system and method is provided by a weighted linear combination of a pair of inputs from a low power and a high power controller to actuate feedwater regulation valves.

摘要翻译： 通过来自低功率和高功率控制器的一对输入的加权线性组合来提供全范围蒸汽发生器液位控制系统和方法，以致动给水调节阀。

公开(公告)号：US3098812A

公开(公告)日：1963-07-23

申请号：US13144661

申请日：1961-08-14

申请人： MICHAEL TRESHOW

发明人： MICHAEL TRESHOW

IPC分类号： F01K9/02 ,  F01K13/00 ,  G21C1/08 ,  G21C7/26 ,  G21C15/22 ,  G21D3/12 ,  G21D3/14

CPC分类号： G21C15/22 ,  F01K9/023 ,  F01K13/006 ,  G21C1/08 ,  G21C7/26 ,  G21D3/12 ,  G21D3/14 ,  Y02E30/31 ,  Y02E30/39

公开(公告)号：US11955248B2

公开(公告)日：2024-04-09

申请号：US17466109

申请日：2021-09-03

申请人： GE-Hitachi Nuclear Energy Americas LLC

发明人： Charles Lee Heck ,  Michael M. Cook

IPC分类号： G21C15/12 ,  G21C1/08 ,  G21C7/32 ,  G21C15/18 ,  G21D3/14 ,  G21C15/25 ,  G21D5/06

CPC分类号： G21C15/12 ,  G21C1/084 ,  G21C7/32 ,  G21C15/18 ,  G21D3/14 ,  G21C15/185 ,  G21C15/25 ,  G21D5/06

摘要： A method and apparatus of limiting power of a boiling water nuclear reactor system includes a reactor pressure vessel, a reactor core disposed in the reactor pressure vessel, a core shroud surrounding the reactor core, a downcomer region disposed between an inner surface of the reactor pressure vessel and the core shroud, a steam line connected to an upper end of the reactor pressure vessel and a condenser system that receives steam from the reactor pressure vessel. A portion of the condenser system condensate is returned to the reactor pressure vessel of the boiling water reactor inside the core barrel above the core rather than into the downcomer. Returning the condensate in this way increases the effectiveness of an isolation condenser system or if the condensate is a portion of the feedwater from the main condenser it provides an effective means to regulate core flow and core power.

公开(公告)号：US10217536B2

公开(公告)日：2019-02-26

申请号：US14228328

申请日：2014-03-28

申请人： Richard B Vilim

发明人： Richard B Vilim

IPC分类号： G21D3/08 ,  F01D17/24 ,  G21D3/14

摘要： The invention relates to a nuclear plant in which the power of a nuclear reactor is controlled via demand of a connected electric grid. A naturally circulating nuclear reactor coolant loop is linked to a water/steam loop by means of a steam generator. The water/steam loop consists of an electric power generating unit and a water recirculating and steam control system. The generator is coupled to an external power grid. As power requirements of the grid change, a controller linked to the generator and a three way valve divides steam flow between the expansion turbine and a feedwater heater to boost or retard the power output. Altering the steam flow changes the pressure and temperature in the water/steam system and thus the coolant flow rate. The change in coolant flow allows the reactor core to regulate its reactivity to reach a state of equilibrium to the demand for electric power.