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    • 3. 发明授权
    • Outer filter removal tool
    • 外滤器去除工具
    • US5347554A
    • 1994-09-13
    • US135872
    • 1993-10-12
    • Thomas W. WhiteEdward J. PulpanRobert S. TsukidaEdward W. SaxonFrank Ortega
    • Thomas W. WhiteEdward J. PulpanRobert S. TsukidaEdward W. SaxonFrank Ortega
    • G21C19/20G21C19/00
    • G21C19/00G21C19/207G21Y2002/301G21Y2002/40G21Y2004/50
    • An improved tool for removing a highly contaminated outer filter from a control rod drive during a maintenance operation. The tool slides onto the control rod drive and surrounds the outer filter with a shield. The shield has a window for removing the screws used to mount the outer filter on the control rod drive. The tool has a support for the spud on the inside thereof. A U-shaped handle is slidably inserted into guideways so that it interlocks with circumferential slots in the shield. The arms of the inserted U-handle latch underneath the ring flange of the outer filter, whereby the outer filter is captured by the tool. The filter-mounting screws are then removed by unscrewing through the aligned window in the shield. Thereafter, the outer filter is removed from the CRD when the outer filter removal tool is lifted.
    • 一种改进的工具,用于在维护操作期间从控制杆驱动器中去除高度污染的外部过滤器。 该工具滑动到控制杆驱动器上,并用屏蔽件围绕外部过滤器。 屏蔽罩有一个窗口用于拆卸用于将外部过滤器安装在控制杆驱动器上的螺钉。 该工具在其内部具有支撑件。 U形手柄可滑动地插入导轨中,使其与屏蔽件中的周向狭槽互锁。 插入的U形手柄的臂在外部过滤器的环形凸缘下方锁定,由此外部过滤器被工具捕获。 然后通过拧松屏蔽中对齐的窗口拧下过滤器安装螺钉。 此后,当外部过滤器去除工具被提起时,外部过滤器从CRD中移除。
    • 5. 发明授权
    • Inner filter removal tool
    • 内滤器去除工具
    • US5379330A
    • 1995-01-03
    • US135779
    • 1993-10-12
    • Robert K. LovellRobert S. TsukidaFrank OrtegaThomas W. White
    • Robert K. LovellRobert S. TsukidaFrank OrtegaThomas W. White
    • G21C19/20G21C19/26G21C19/00
    • G21C19/26G21C19/207B01D2201/24B01D2201/4084G21Y2002/402G21Y2004/501
    • An improved tool for removing the highly contaminated inner filter from a control rod drive during a maintenance operation. The tool may also be used to install the inner filter by pushing the inner filter on and locking the spring clip onto flats of the center lug of the control rod drive stop piston. The tool has a collet with flexible fingers which are inserted inside the inner filter while flexed radially inward. After the collet is inserted, a retractable cam with a conical bearing surface is retracted to a position whereat it urges the collet fingers radially outward to clamp the collet onto the inner filter. The locked filter must be rotated before removal. With the inner filter coupled to the collet, the tool is then pulled out to remove the inner filter from the control rod drive.
    • 一种改进的工具,用于在维护操作期间从控制杆驱动器中去除高度污染的内部过滤器。 该工具还可以用于通过推动内部过滤器并将弹簧夹锁定到控制棒驱动停止活塞的中心凸耳的平面上来安装内部过滤器。 该工具具有柔性指状物的夹头,其在径向向内弯曲的同时插入内部过滤器内部。 在插入夹头之后,具有锥形支承表面的可伸缩凸轮缩回到其中径向向外推动夹头的位置,以将夹头夹紧到内部过滤器上。 锁定的过滤器必须在拆卸前旋转。 将内部过滤器联接到夹头上,然后将工具拉出以从控制杆驱动器中移除内部过滤器。
    • 6. 发明授权
    • Spark electrode assembly
    • 火花电极组件
    • US07116041B2
    • 2006-10-03
    • US10855830
    • 2004-05-27
    • Robert L. BurtonD. Wayne LeidyGarrett L. ScottThomas W. White
    • Robert L. BurtonD. Wayne LeidyGarrett L. ScottThomas W. White
    • H01T13/00H01T13/02H01T13/20
    • H01T13/20C03B40/027F23Q3/006H01T13/14
    • A spark electrode assembly has an elongate electrode with an inner insulator arranged for operable attachment to a support structure. The inner insulator surrounds the electrode with one end of the electrode positioned adjacent a ground element across a spark gap and another end of the electrode extending relative to the support structure for attachment to a source of electrical power. An outer insulator is spaced radially outwardly from the inner insulator and surrounds the inner insulator generally adjacent the end of the electrode adjacent the ground element. The inner and outer insulators cooperate to inhibit the formation of a continuous lubrication layer thereon, thereby establishing an area generally free from the lubrication layer between the end of the electrode adjacent the ground element and the support structure.
    • 火花电极组件具有细长电极,其具有布置成可操作地附接到支撑结构的内绝缘体。 内绝缘体围绕电极,电极的一端通过火花隙定位在接地元件附近,并且电极的另一端相对于支撑结构延伸以附接到电力源。 外绝缘体与内绝缘体径向向外间隔开,并且围绕内绝缘体大致邻近接地元件的电极端部。 内绝缘体和外绝缘体配合以阻止在其上形成连续润滑层,从而在邻近接地元件的电极的端部和支撑结构之间形成通常没有润滑层的区域。