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公开(公告)号：US20220406477A1
公开(公告)日：2022-12-22
申请号：US17353016
申请日：2021-06-21
发明人： Jeffrey M. MCCARTY , Thanh H. DO
摘要： The present disclosure is generally related to methods, devices and systems for improving the performances of a Rod Cluster Control Assembly (RCCA) and/or a Control Element Assembly (CEA) to mitigate clad strain, especially in the high fluence region, during normal operation conditions and accident conditions. One method may include incorporating a device such as a powder collection and blockage device between the ceramic upper and ceramic lower absorber materials of the RCCA and/or CEA. Another method may include increasing the plenum volume by incorporating an axial hole into the top end plug extension. Another method may include increasing the plenum volume by incorporating an axial hole into the bottom end plug and optionally incorporating radial grooves in the bottom of the lower absorber material to provide a flow channel for gas expansion or generation to ensure that the lower absorber does not block the opening in the bottom end plug.
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公开(公告)号：US20220059247A1
公开(公告)日：2022-02-24
申请号：US17399910
申请日：2021-08-11
发明人： Anthony L. Crawford
摘要： A control rod drive system includes a drive assembly and a cage assembly operably coupled to the drive assembly. The cage assembly includes a plurality of drive rods operably engaged with a drive platform, a plurality of guide rods extending through the drive platform, and a control platform releasably coupled to the drive platform via quick release assembly, the control platform configured to have a control rod mounted thereto. A method of control operation of a nuclear reactor includes receiving instructions to adjust operation of the nuclear reactor, moving a control rod relative to a core of the nuclear reactor via rotating one or more drive rods engaged with a drive platform, and releasing a control platform coupled to the control rod from the drive platform.
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公开(公告)号：US20210202117A1
公开(公告)日：2021-07-01
申请号：US16731127
申请日：2019-12-31
发明人： Dennis Scott NELSON
摘要： Various example embodiments are directed towards an improved control drum, as well as systems, apparatuses, and/or methods for operating a nuclear reactor with a plurality of improved control drums. The control drum includes an outer shell, an inner shell, a plurality of tubes, the plurality of tubes including at least one neutron absorbing tube and at least one neutron scattering tube, and at least one baffle plate arranged between the outer shell and the inner shell, the at least one baffle plate including a plurality of perforations, and at least one perforation of the plurality of perforations configured to support a tube of the plurality of tubes.
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公开(公告)号：US20210151207A1
公开(公告)日：2021-05-20
申请号：US16741160
申请日：2020-01-13
发明人： Bruce F. ALLEN , Gregory E. FALVO
IPC分类号： G21C7/14
摘要： The present invention relates to a control rod drive mechanism assembly for a nuclear reactor having a nuclear reactor vessel, a nuclear reactor core, a reactor vessel head, a latch housing nozzle, a latch housing, a rod travel housing, a latch assembly, a drive rod assembly and a rod control cluster assembly. The latch housing is integrated with the latch housing nozzle, the rod travel housing is welded to the latch housing, and the latch assembly is connected to the rod travel housing. The latch assembly includes the drive rod assembly and the rod control cluster assembly which is attached to the drive rod assembly.
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公开(公告)号：US10910115B2
公开(公告)日：2021-02-02
申请号：US15453195
申请日：2017-03-08
摘要： Control rod drives include all-digital monitoring, powering, and controlling systems for operating the drives. Each controlling system includes distinct microprocessor-driven channels that independently monitor and handle control rod drive position information reported from multiple position sensors per drive. Controlling systems function as rod control and information systems with top-level hardware interfaced with nuclear plant operators other plant systems. The top-level hardware can receive operator instructions and report control rod position, as well as report errors detected using redundant data from the multiple sensors. Positional data received from each drive is multiplexed across plural, redundant channels to allow verification of the system using independent position data as well as operation of the system should a single channel or detector fail. Control rod drives are capable of positioning and detecting position of control elements in fine increments, such as 3-millimeter increments, with plural position sensors that digitally report drive status and position.
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6.发明申请公开(公告)号：US20190122776A1
公开(公告)日：2019-04-25
申请号：US15789409
申请日：2017-10-20
摘要： A mounting assembly that has no threaded connections. A rod with pins or machined features radially extending from a distal end is configured to rotate until the pins align with grooves in a hole through a base plate. The rod is inserted through the hole until the pins are through an opposite surface of the base plate, compressing spring components on the rod. Then the rod is rotated until the pins are aligned with slots that partially extend through the second side of the base plate and the pins become seated in the slots. To remove the rod a tool that engages an articulated feature on the distal end of the rod is installed. The tool rotates the rod until the pins are disengaged from the slots, aligned with the through grooves and passed through the base plate.
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公开(公告)号：US10229760B2
公开(公告)日：2019-03-12
申请号：US14174638
申请日：2014-02-06
发明人： Christopher D. Dodd , Paul K. DeSantis , Kevin J. Stambaugh , Allan R. Mackovjak , John P. McLaughlin , Brett T. Goodyear , Michael J. Edwards , Matthew W. Ales
摘要： A control rod drive mechanism (CRDM) configured to latch onto the lifting rod of a control rod assembly and including separate latch engagement and latch holding mechanisms. A CRDM configured to latch onto the lifting rod of a control rod assembly and including a four-bar linkage closing the latch, wherein the four-bar linkage biases the latch closed under force of gravity.
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8.发明授权Nuclear reactor assembly having a connection between a control rod guide tube and a drive housing pipe 有权核反应堆组件，其具有控制棒引导管和驱动器外壳管之间的连接公开(公告)号：US09362011B2
公开(公告)日：2016-06-07
申请号：US14167207
申请日：2014-01-29
申请人： AREVA GMBH
IPC分类号： G21C7/14 , G21C13/028 , G21C7/12
CPC分类号： G21C13/028 , G21C7/12 , G21C7/14 , Y02E30/31 , Y02E30/39
摘要： A boiling water reactor assembly includes a bayonet plate closure between a control rod guide tube and a drive housing pipe. The bayonet plate closure has a bayonet plate constructed in two parts including a central bayonet ring mounted rotatably about its longitudinal axis and an outer ring completely surrounding the bayonet ring. The outer ring is mounted on the periphery of the bayonet ring and reaches inwards under the bayonet ring periphery. The ring is furthermore permanently supported in the axial direction on the drive housing pipe by spring pressure acting on the control rod guide tube, in order to produce a frictional connection. The spring pressure can be released unhindered from the reactor side by tools.
摘要翻译： 沸水反应器组件包括在控制棒引导管和驱动器外壳管之间的卡口板封闭件。 卡口板盖具有卡口板，该卡口板由两部分组成，包括围绕其纵向轴线可旋转地安装的中心卡口环和完全围绕卡口环的外环。 外圈安装在卡口环的周边，并在卡口环周围向内进入。 此外，通过作用在控制杆引导管上的弹簧压力，环在轴向方向上永久地支撑在驱动器壳体管上，以便产生摩擦连接。 弹簧压力可通过工具无阻碍地从反应器侧释放。
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公开(公告)号：US20150139380A1
公开(公告)日：2015-05-21
申请号：US14518987
申请日：2014-10-20
发明人： Jae-Seon LEE , Jong-Wook KIM , Tae-Wan KIM , Suhn CHOI , Keung-Koo KIM , Jong In KIM
IPC分类号： G21C7/14
摘要： Disclosed is a control rod drive mechanism. More specifically, the control rod drive mechanism includes a guide member 100 disposed in a nuclear reactor to receiving a drive shaft 2; a latch assembly 200 disposed in the guide member 100 to enable the drive shaft 2 to be withdrawn and inserted; a supporting member 300 connected to the guide member 100 to cover the drive shaft 2 and to support the latch assembly 200; and a plurality of coil housings 400 spaced apart and connected to the guide member 100 to cover the latch assembly 200, and each having a coil 410 built therein.
摘要翻译： 公开了一种控制杆驱动机构。 更具体地，控制杆驱动机构包括设置在核反应堆中以接收驱动轴2的引导构件100; 设置在引导构件100中以使得驱动轴2能够被拉出并插入的闩锁组件200; 连接到引导构件100以覆盖驱动轴2并支撑闩锁组件200的支撑构件300; 以及间隔开并连接到引导构件100以覆盖闩锁组件200的多个线圈壳体400，并且每个具有内置的线圈410。
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公开(公告)号：US20140270036A1
公开(公告)日：2014-09-18
申请号：US14174630
申请日：2014-02-06
发明人： Christopher D. Dodd , Paul K. DeSantis , Kevin J. Stambaugh , Allan R. Mackovjak , John P. McLaughlin , Brett T. Goodyear , Michael J. Edwards , Matthew W. Ales
IPC分类号： G21C7/14
摘要： A control rod drive mechanism (CRDM) configured to latch onto the lifting rod of a control rod assembly and including separate latch engagement and latch holding mechanisms. A CRDM configured to latch onto the lifting rod of a control rod assembly and including a four-bar linkage closing the latch, wherein the four-bar linkage biases the latch closed under force of gravity.
摘要翻译： 控制杆驱动机构（CRDM）被配置为闩锁到控制杆组件的提升杆上并且包括单独的闩锁接合和闩锁保持机构。 CRDM，被配置为闩锁到控制杆组件的提升杆上并且包括关闭闩锁的四杆联动装置，其中四杆连杆在重力作用下偏压闩锁。
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