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公开(公告)号：US20240347220A1
公开(公告)日：2024-10-17
申请号：US18431787
申请日：2024-02-02
CPC分类号： G21C17/06 , G01L19/086 , G21C19/10 , H04N5/77 , G21C19/07 , G21C19/207 , H04N23/555
摘要： A fuel assembly inspection system that utilizes a pressure transducer mounted to a utility's spent fuel handling tool to detect a relative change in depth of a fuel assembly during fuel inspections. The system then wirelessly transmits the signal to a fuel inspection recording system, which converts the signal to a relative height along the fuel assembly being viewed by a camera, and displays the relative height along with the applicable fuel assembly feature being viewed by the camera (e.g., nozzle, grid, span) via a text overlay on the video image of the inspection.
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公开(公告)号：US20240312647A1
公开(公告)日：2024-09-19
申请号：US18228642
申请日：2023-07-31
发明人： Gregory J. Pearson , Atul A. Karve
CPC分类号： G21C3/326 , G21C19/205 , Y02E30/30
摘要： Cores include different types of control cells in different numbers and positions. A periphery of the core just inside the perimeter may have higher reactivity fuel in outer control cells, and lower reactivity cells may be placed in an inner core inside the inner ring. Cores can include about half fresh fuel positioned in higher proportions in the inner ring and away from inner control cells. Cores are compatible with multiple core control cell setups, including BWRs, ESBWRs, ABWRs, etc. Cores can be loaded during conventional outages. Cores can be operated with control elements in only the inner ring control cells for reactivity adjustment. Control elements in outer control cells need be moved only at sequence exchanges. Near end of cycle, reactivity in the core may be controlled with inner control cells alone, and control elements in outer control cells can be fully withdrawn.
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3.发明公开公开(公告)号：US20240127975A1
公开(公告)日：2024-04-18
申请号：US18484494
申请日：2023-10-11
发明人： Tao ZHANG , Xingtian ZHANG , Huaquan LV , Wenbin WEI , Yong LUO , Jilan ZHANG , Miaomiao WANG
IPC分类号： G21C15/253 , G21C1/07 , G21C19/20
CPC分类号： G21C15/253 , G21C1/07 , G21C19/202
摘要： The invention discloses a serial high-temperature gas-cooled reactor nuclear energy system and an operating method thereof. The serial high-temperature gas-cooled reactor nuclear energy system includes a plurality of high-temperature gas-cooled reactors and a serial gas-cooled reactor. The high-temperature gas-cooled reactor includes a first reactor pressure vessel comprising a first reaction chamber for accommodating the first fuel element; a second reactor pressure vessel comprising a second reaction chamber interconnected with the first reaction chamber, allowing the first spent fuel in the first reaction chamber to enter the second reaction chamber. The system of the present invention allows the spent fuel discharged from the high-temperature gas-cooled reactor to be directly reused as fuel for the serial gas-cooled reactor, thereby improving the utilization rate of nuclear fuel and reducing the cost of gas-cooled reactors, which is conducive to the promotion of industrialized application of high-temperature gas-cooled reactors.
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公开(公告)号：US20240021331A1
公开(公告)日：2024-01-18
申请号：US18254110
申请日：2021-11-12
IPC分类号： G21C19/20 , G21C19/10 , G21C13/073 , G21C17/108
CPC分类号： G21C19/207 , G21C19/10 , G21C13/073 , G21C17/108
摘要： The present disclosure provides an integrated head package for a nuclear power generation system, the integrated head package comprising a closure head, and a control rod drive mechanism housed within a shroud. The control rod drive mechanism comprises at least one drive rod extending through the closure head and having a coupling element for releasably coupling to a control rod assembly within a reactor core. The at least one drive rod is movable to a maintenance/refuelling position in which the at least one drive rod is uncoupled from the control rod assembly and at least partially retracted into the integrated head package. The integrated head package further comprises at least one engagement feature for securing the at least one drive rod in the maintenance/refuelling position.
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公开(公告)号：US20240013936A1
公开(公告)日：2024-01-11
申请号：US17811400
申请日：2022-07-08
申请人： X-Energy, LLC
发明人： Howard Kim , Daniel Brown
IPC分类号： G21C1/07 , G21C19/20 , G21C17/112
CPC分类号： G21C1/07 , G21C19/202 , G21C17/112
摘要： A nuclear reactor has an axially stratified fuel bed. The reactor features a reactor shell having a base, a top having an exhaust outlet, and an axis. The axially stratified fuel bed is within the reactor shell, and includes:
a first zone configured to operate at a first temperature T1, the first zone comprising a plurality of first fuel particles, each first fuel particle comprising a first radioactive ceramic core and a first ceramic seal coating; and
a second zone configured to operate at a second temperature T2, where T2>T1, the second zone comprising a plurality of second fuel particles, each second fuel particle comprising a second radioactive ceramic core and a second ceramic seal coating. A coolant fluid flow path carries a coolant fluid from the base of the reactor to the exhaust outlet, along a flow path passing sequentially through the first zone and the second zone. The first ceramic seal coating has greater stability at T1 than at T2, and the second ceramic seal coating has greater stability at T2 than the first ceramic seal coating.-
公开(公告)号：US20230420150A1
公开(公告)日：2023-12-28
申请号：US18254016
申请日：2021-11-12
CPC分类号： G21C19/207 , G21C19/10 , G21C19/32
摘要： The present disclosure provides a lifting and transport device for lifting upper internals from a reactor core of a nuclear power generation system in a deployment location and transporting them to a storage location. The lifting/transport device comprises a device body formed of radioactive shielding material, the device body defining a storage chamber having an open base. The device further comprises a movable sealing plate formed of radioactive shielding material, the sealing plate being movable between an open position in which the storage chamber is open and a closed position in which the storage chamber is sealed. There is also a lifting system mounted within the storage chamber having a lifting rig for releasable connection to the upper internals and configured to raise the upper internals to within the storage chamber when the device is in the deployment location and the plate is in the open position. The device comprises wheels for guiding movement of the lifting/transport device between the deployment location and the storage location.
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公开(公告)号：US20230343477A1
公开(公告)日：2023-10-26
申请号：US17759415
申请日：2021-01-19
发明人： David W. EARGLE
CPC分类号： G21C17/013 , B25J5/007 , B25J9/162 , B25J9/1664 , B25J11/00 , B25J19/022 , B25J19/023 , G21C19/207
摘要： A mobile robotic assembly for guiding an end effector in inspecting reactor vessel heads is disclosed. The mobile robotic assembly includes a mobile platform; a support assembly extending vertically from the mobile platform, wherein the support assembly comprises an adjustable height; and a robotic arm attached to and extending laterally from the support assembly.
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公开(公告)号：US20230298775A1
公开(公告)日：2023-09-21
申请号：US18016615
申请日：2021-07-14
申请人： ROLLS-ROYCE PLC
摘要： The present disclosure provides a refuelling device for lifting a fuel rod assembly from a reactor core of a nuclear power generation system in a deployment location and transporting it to a storage location. The refuelling device comprises a device body having an open base and defining a chamber for housing a coolant. A sealing plate is movable between an open position in which the chamber is open and a closed position in which the chamber is sealed. The device further comprises a shielding element formed of radioactive shielding material and moveably mounted within the chamber. It has a storage cavity having an open lower end, the shielding element being movable between a retracted position in which it is fully contained within the chamber and an extended position in which it extends from the chamber through the open base of the device body. The device further comprises a rod lifting system having a rod connector for releasable connection to the fuel rod assembly and configured to raise the fuel rod assembly to within the storage cavity when the device is in the deployment location, the sealing plate is in the open position and the shielding element is in its extended position.
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公开(公告)号：US11721445B2
公开(公告)日：2023-08-08
申请号：US18055115
申请日：2022-11-14
IPC分类号： G21C13/036 , G21C13/067 , G21C13/032 , G21C19/20 , G21C15/00 , G21C19/00 , G21C7/12 , G21C15/12
CPC分类号： G21C13/036 , G21C13/032 , G21C13/067 , G21C19/207 , G21C7/12 , G21C15/00 , G21C15/12 , G21C19/00 , G21C19/20
摘要： A replacement thermal sleeve with a flange for a reactor vessel closure head penetration adapter housing. By altering a diameter of the flange, a replacement thermal sleeve can be installed through the narrow diameter of the penetration adapter housing opening from under the reactor vessel head. The flange can be compressible or expandable or the tubular wall of the thermal sleeve can be inserted in longitudinal sections, one at a time, into an opening in the underside of the penetration head adapter and reformed within the opening when fully inserted.
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公开(公告)号：US20230213048A1
公开(公告)日：2023-07-06
申请号：US17860091
申请日：2022-07-07
CPC分类号： F16B2/065 , G21C19/207
摘要： Clamp systems include multiple, separate clamps joinable to components subject to relative rotation. Clamps may have similarly-positioned features to simplify installation and/or removal about a small area for all clamps in the system. Each clamp cannot freely rotate relative to an adjacent clamp but does not pass vertical loads to an adjacent clamp. Clamps may use mating shapes like an extension and recess to limit rotation. Clamps fit to the perimeters of components to which they individually secure by biasing against the components. At least one clamp has a transitional surface to provide space between the clamp and component to provide containment to a weld or other joining structure. Clamp systems can be tightened by included fasteners. Crimp nuts or other locking structures can preserve the biased and secured nature of the clamps and underlying structures. Clamp systems may be used to secure or repair a lifting rod assembly.
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