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公开(公告)号:US11901091B2
公开(公告)日:2024-02-13
申请号:US17366997
申请日:2021-07-02
申请人: BWXT mPower, Inc.
发明人: Scott J. Shargots
IPC分类号: G21C7/12 , G21C7/08 , G21C7/36 , G21C13/00 , G21C15/243 , G21C17/116 , G21C1/32 , G21C7/16 , G21C7/14 , G21C1/08
CPC分类号: G21C7/12 , G21C1/32 , G21C7/08 , G21C7/14 , G21C7/16 , G21C7/36 , G21C13/00 , G21C15/243 , G21C17/116 , G21C1/086 , Y02E30/30
摘要: A power distribution plate (PDP) sits on top of a support plate. Control rod drive mechanism (CRDM) units are mounted on top of the PDP, but the PDP is incapable of supporting the weight of the CRDM units and instead transfers the load to a support plate. The PDP has receptacles which receive cable modules each including mineral insulated (MI) cables, the MI cables being connected with the CRDM units. The PDP may further include a set of hydraulic lines underlying the cable modules and connected with the CRDM units. The cable modules in their receptacles define conduits or raceways for their MI cables and for any underlying hydraulic lines.
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公开(公告)号:US20220005618A1
公开(公告)日:2022-01-06
申请号:US17366997
申请日:2021-07-02
申请人: BWXT mPower, Inc.
发明人: Scott J. Shargots
IPC分类号: G21C7/12 , G21C7/08 , G21C7/36 , G21C13/00 , G21C15/243 , G21C17/116 , G21C1/32 , G21C7/16 , G21C7/14
摘要: A power distribution plate (PDP) sits on top of a support plate. Control rod drive mechanism (CRDM) units are mounted on top of the PDP, but the PDP is incapable of supporting the weight of the CRDM units and instead transfers the load to a support plate. The PDP has receptacles which receive cable modules each including mineral insulated (MI) cables, the MI cables being connected with the CRDM units. The PDP may further include a set of hydraulic lines underlying the cable modules and connected with the CRDM units. The cable modules in their receptacles define conduits or raceways for their MI cables and for any underlying hydraulic lines.
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公开(公告)号:US10943705B2
公开(公告)日:2021-03-09
申请号:US15911763
申请日:2018-03-05
申请人: BWXT mPower, Inc.
摘要: A method including providing an internal control rod drive mechanism (CRDM) including an electric motor and a support surface including sealed electrical connectors electrically connected with the electric motor to deliver electrical power to the electrical motor, installing the internal CRDM inside a nuclear reactor, the installing including placing the support surface of the internal CRDM onto a support element inside the nuclear reactor, the placing causing sealed electrical connectors disposed on the support element to mate with the sealed electrical connectors on the support surface of the internal CRDM, wherein the nuclear reactor contains coolant water and the installing is performed with the internal CRDM submerged in the coolant water and the seals of the sealed electrical connectors of the internal CRDM and the support element are effective to prevent coolant water ingress into the sealed electrical connectors.
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4.
公开(公告)号:US20170213606A1
公开(公告)日:2017-07-27
申请号:US15483466
申请日:2017-04-10
申请人: BWXT mPower, Inc.
IPC分类号: G21C13/028 , G21C15/02 , G21C1/32 , G21C13/04
摘要: 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.
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5.
公开(公告)号:US11837370B2
公开(公告)日:2023-12-05
申请号:US17145743
申请日:2021-01-11
申请人: BWXT mPower, Inc.
发明人: Scott J. Shargots
CPC分类号: G21C1/32 , F04D13/10 , G21C1/086 , G21C1/09 , G21C15/24 , G21C15/243 , G21C21/00 , G21D1/04 , Y02E30/30 , Y10T29/49236 , Y10T29/49245
摘要: A pressurized water reactor (PWR) includes a vertical cylindrical pressure vessel having a lower portion containing a nuclear reactor core and a vessel head defining an integral pressurizer. A reactor coolant pump (RCP) mounted on the vessel head includes an impeller inside the pressure vessel, a pump motor outside the pressure vessel, and a vertical drive shaft connecting the motor and impeller. The drive shaft does not pass through the integral pressurizer. The drive shaft passes through a vessel penetration of the pressure vessel that is at least large enough for the impeller to pass through.
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6.
公开(公告)号:US20220277862A1
公开(公告)日:2022-09-01
申请号:US17145743
申请日:2021-01-11
申请人: BWXT mPower, Inc.
发明人: Scott J. Shargots
摘要: A pressurized water reactor (PWR) includes a vertical cylindrical pressure vessel having a lower portion containing a nuclear reactor core and a vessel head defining an integral pressurizer. A reactor coolant pump (RCP) mounted on the vessel head includes an impeller inside the pressure vessel, a pump motor outside the pressure vessel, and a vertical drive shaft connecting the motor and impeller. The drive shaft does not pass through the integral pressurizer. The drive shaft passes through a vessel penetration of the pressure vessel that is at least large enough for the impeller to pass through.
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7.
公开(公告)号:US10892061B2
公开(公告)日:2021-01-12
申请号:US16028594
申请日:2018-07-06
申请人: BWXT mPower, Inc.
发明人: Scott J. Shargots
摘要: A pressurized water reactor (PWR) includes a vertical cylindrical pressure vessel having a lower portion containing a nuclear reactor core and a vessel head defining an integral pressurizer. A reactor coolant pump (RCP) mounted on the vessel head includes an impeller inside the pressure vessel, a pump motor outside the pressure vessel, and a vertical drive shaft connecting the motor and impeller. The drive shaft does not pass through the integral pressurizer. The drive shaft passes through a vessel penetration of the pressure vessel that is at least large enough for the impeller to pass through.
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公开(公告)号:US10600520B2
公开(公告)日:2020-03-24
申请号:US15483466
申请日:2017-04-10
申请人: BWXT mPower, Inc.
摘要: 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.
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公开(公告)号:US10249392B2
公开(公告)日:2019-04-02
申请号:US15147262
申请日:2016-05-05
申请人: BWXT mPower, Inc.
发明人: Scott J. Shargots , Matthew W. Ales
摘要: A control rod guide frame comprises a self supporting stack of two or more columnar elements defining a central passage. The columnar elements may include mating features that mate at abutments between adjacent columnar elements of the stack. The control rod guide frame is suitably used in conjunction with a control rod drive mechanism (CRDM) operatively connected with at least one control rod, and a nuclear reactor core, in which the CRDM moves the at least one control rod into and out of the nuclear reactor core under guidance of the control rod guide frame. In another embodiment, a control rod guide frame comprises a stack of two or more columnar elements defining a central passage having a constant cross-section as a function of position along the central passage. In another embodiment, a control rod guide frame comprises an extruded columnar element providing continuous control rod guidance.
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公开(公告)号:US20180197641A1
公开(公告)日:2018-07-12
申请号:US15911763
申请日:2018-03-05
申请人: BWXT mPower, Inc.
摘要: An internal control rod drive mechanism (CRDM) including an electric motor is disposed in a nuclear reactor and further includes a support surface with sealed electrical connectors electrically connected with the electric motor power the motor. The internal CRDM is disposed on a support element secured inside the nuclear reactor. The support element includes sealed electrical connectors mating with the sealed electrical connectors on the support surface of the internal CRDM to power the electric motor. The sealed electrical connectors may be sealed glass, ceramic, or glass-ceramic connectors welded onto the ends of the MI cables extending from the motor. Springs, are disposed between the mating sealed electrical connectors of the support element and the support surface. A purge line is integrated with each mated connection.
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