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公开(公告)号：US11996208B2
公开(公告)日：2024-05-28
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： G21C7/12 , G21C7/22 , G21C9/033 , G21D3/14 , G21D3/16 , G21D3/18 , F22B35/00 , G21C1/02 , G21C7/08 , G21C7/24 , G21C9/02 , G21C13/02 , G21D1/00 , G21D3/02 , G21D5/08
CPC分类号： G21C7/12 , G21C7/22 , G21C9/033 , G21D3/14 , G21D3/16 , G21D3/18 , F22B35/004 , G21C1/028 , G21C7/08 , G21C7/24 , G21C9/02 , G21C13/022 , G21D1/006 , G21D3/02 , G21D5/08
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 there actor 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.
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公开(公告)号：US20230139641A1
公开(公告)日：2023-05-04
申请号：US17977780
申请日：2022-10-31
摘要： A control rod drive mechanism having a torque tube, a control rod assembly including a connecting rod disposed within the torque tube and including an annular collar defining a key slot, an elongated key that is slidably receivable within the key slot, a lock cam assembly rotatably secured to a top end of the connecting rod and including a locking cam, and a holdout collar disposed non-rotatably within the torque tube, the holdout collar including a locking recess with an entry slot, wherein in a first axial position the lock cam assembly is rotatable with respect to the torque tube, and a second axial position the lock cam assembly is non-rotatable with respect to the torque tube.
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公开(公告)号：US20230134417A1
公开(公告)日：2023-05-04
申请号：US17977789
申请日：2022-10-31
摘要： A control rod assembly having a connecting rod, a spider, a plurality of control rods, a coupling sleeve secured to the connecting rod and including a body portion defining at least one cam pin, and a barrel cam defining a cam track, the barrel cam being rotatably secured to the spider. The cam track includes a first camming surface and a second camming surface that are configured so that the barrel cam rotates in a first direction as the at least one cam pin slides along the first and second camming surfaces. The barrel cam rod is rotatable between a first position in which the spider is connected to the connecting rod and a second position in which the spider is disconnected from the connecting rod.
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4.发明授权公开(公告)号：US11501886B2
公开(公告)日：2022-11-15
申请号：US17004406
申请日：2020-08-27
摘要： Control rod drives include linearly-moveable control elements inside an isolation barrier. Control rod drives move the control element through a motor and rotor powering a linear screw internal to an isolation barrier. Induction coils may generate magnetic fields and be moveable across a full stroke length of the control element in the reactor. The magnetic fields hold closed a releasable latch to disconnect the control elements from the linear drives. A control rod assembly may join to the control element. The control rod assembly may lock with magnetic overtravel latches inside the isolation barrier to maintain an overtravel position. Overtravel release coils outside the isolation barrier may release the latches to leave the overtravel position. Operation includes moving the magnetic fields and releasable latch together on opposite sides of an isolation barrier to drive the control element to desired insertion points, including full insertion by gravity following de-energization.
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公开(公告)号：US20220115153A1
公开(公告)日：2022-04-14
申请号：US17497631
申请日：2021-10-08
摘要： A neutron absorber member is configured to be inserted into a control rod guide tube of a spent fuel assembly. The neutron absorber member includes a first plate and a second plate. The first plate extends along a longitudinal axis between a first end and a second end. The first plate has a slot formed therethrough at the first end. The slot extends from the first end towards the second end. The second plate is disposed within the slot of the first plate. The first plate and the second plate are arranged to have a cross-sectional shape of a cruciform.
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公开(公告)号：US11056249B2
公开(公告)日：2021-07-06
申请号：US16153289
申请日：2018-10-05
申请人： BWXT mPower, Inc.
发明人： Scott J. Shargots
IPC分类号： G21C7/12 , G21C7/14 , G21C7/16 , G21C1/32 , G21C7/08 , G21C7/36 , G21C13/00 , G21C15/243 , G21C17/116 , G21C1/08
摘要： An apparatus having a nuclear reactor comprising a pressure vessel containing primary coolant water and further containing a nuclear reactor core comprising fissile material, a mounting/electrical distribution plate secured entirely within the pressure vessel and configured to be submerged in the primary coolant, a set of control rod drive mechanism (CRDM) units mounted directly on the mounting/electrical distribution plate, and a plurality of cable modules mounted in receptacles of the mounting/electrical distribution plate wherein each cable module includes mineral insulated (MI) cables connected with one or more of the CRDM units, the cable module including its MI cables being removable as a unit from the receptacle of the mounting/electrical distribution plate.
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公开(公告)号：US10790066B2
公开(公告)日：2020-09-29
申请号：US15830632
申请日：2017-12-04
发明人： John L. Lyons , Yasir Arafat , Jurie Van Wyk , Luke D. Czerniak , James L. Yankel , Matthew R. Heisel
摘要： A rotation apparatus is usable with a control drum in a nuclear environment. The control drum is situated on a shaft that is rotatable about a horizontal axis of rotation, and the control drum includes an absorber portion and a reflector portion. The rotation apparatus includes a rotation mechanism that is structured to apply to the shaft in an operational position a force that biases the shaft to rotate toward a shutdown position, with the force being resisted by a motor to retain the shaft in the operational position when the motor is powered. The force is not resisted when the motor is unpowered. The rotation apparatus further includes a rotation management system that controls the rotation of the shaft.
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8.发明授权公开(公告)号：US10770189B2
公开(公告)日：2020-09-08
申请号：US15646117
申请日：2017-07-11
摘要： Control rod drives include linearly-moveable control elements inside an isolation barrier. Control rod drives move the control element through a motor and rotor powering a linear screw internal to an isolation barrier. Induction coils may generate magnetic fields and be moveable across a full stroke length of the control element in the reactor. The magnetic fields hold closed a releasable latch to disconnect the control elements from the linear drives. A control rod assembly may join to the control element. The control rod assembly may lock with magnetic overtravel latches inside the isolation barrier to maintain an overtravel position. Overtravel release coils outside the isolation barrier may release the latches to leave the overtravel position. Operation includes moving the magnetic fields and releasable latch together on opposite sides of an isolation barrier to drive the control element to desired insertion points, including full insertion by gravity following de-energization.
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公开(公告)号：US20200027603A1
公开(公告)日：2020-01-23
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： G21D3/02 , G21C7/12 , G21D1/00 , G21D3/14 , G21D3/16 , G21D5/08 , F22B35/00 , G21C7/24 , G21C1/02
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 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.
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公开(公告)号：US10170208B2
公开(公告)日：2019-01-01
申请号：US15141116
申请日：2016-04-28
申请人： Jie Yu
发明人： Jie Yu
摘要： The invention discloses an electromagnetic coil bobbin used in reactor as well as an inner bobbin and an outer shell thereon, wherein more than one cut-off grooves are provided on the inner bobbin and the outer shell and uniformly distributed on corresponding inner bobbin or outer shell such that the inner bobbin and the outer shell of which the material of the main body is metal have excellent high-temperature resistance and avoid generation of induced eddy current, and such that the electromagnetic coil can generate a more uniform magnetic field while operating, thus achieving technical effects of reducing or avoiding eccentric wear, reducing or avoiding partial excessive wear, etc., and realizing the objectives of improving and raising movement performance of CRDM.
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