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公开(公告)号：US4222540A
公开(公告)日：1980-09-16
申请号：US965557
申请日：1978-12-01
IPC分类号： H04N5/225 , F16M11/12 , F22B37/00 , G01N21/88 , G01N21/954 , G03B17/56 , G21C17/08 , H04N5/232 , A47B96/06 , F16M11/02
CPC分类号： F16M11/2014 , F16M11/10 , F22B37/003 , G21C17/08
摘要： Apparatus which can be remotely mounted in a tube in a tube sheet provides a platform for mounting a camera. The platform rotates about a shaft extending from the tube, tilts, and moves axially along the shaft to allow the camera to pan the entire tube sheet and equipment utilized to work thereon.
摘要翻译： 可以远程安装在管板中的管子的装置提供了一种用于安装照相机的平台。 平台围绕从管延伸的轴旋转，倾斜并沿着轴向轴向移动，以允许照相机平移用于在其上工作的整个管板和设备。
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公开(公告)号：US5297176A
公开(公告)日：1994-03-22
申请号：US887264
申请日：1992-05-22
CPC分类号： G21C5/06 , G21Y2002/303 , G21Y2002/401 , G21Y2004/301 , G21Y2004/50 , Y02E30/40
摘要： The guide pin aligning a top nozzle of a nuclear fuel assembly to an upper core plate of a nuclear reactor, is replaced working exclusively from below the upper core plate. The replacement guide pin has a shaft portion engaged with the upper core plate and the clamping nut which held the original guide pin, by threadable connection and/or by an expansion fitting. A shoulder on the pin bears against a lower surface of the upper core plate, and a nose of the pin is received in the top nozzle of the fuel assembly. A preferred expansion fitting has a bushing with ridges on its outer surface and a conical inside surface, and is inserted into the bored out original guide pin shaft. A threaded conical plug is pulled axially with rotation of the replacement pin shaft to expand the bushing. The ridges rigidly lock the replacement pin between the shoulder and the clamping nut. By attaching the replacement pin to the stub of the original pin, the invention utilizes existing attachments of the original pin to the upper core plate.
摘要翻译： 将核燃料组件的顶部喷嘴对准核反应堆的上部核心板的引导销仅由上部芯板的下方替换。 更换导向销具有与上芯板和夹紧螺母接合的轴部分，该夹紧螺母通过螺纹连接和/或通过膨胀配件保持原始引导销。 销上的一个肩部靠在上部芯板的下表面上，并且销的鼻子被容纳在燃料组件的顶部喷嘴中。 优选的膨胀配件具有在其外表面上具有隆起的衬套和锥形内表面，并且插入到钻孔的原始导向销轴中。 螺纹圆锥塞被轴向拉动，替换销轴的旋转以使衬套膨胀。 脊刚性地将替换销锁定在肩部和夹紧螺母之间。 通过将替换销连接到原始销的短截线，本发明利用原始销的现有附件到上部芯板。
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公开(公告)号：US4831703A
公开(公告)日：1989-05-23
申请号：US203650
申请日：1988-06-03
CPC分类号： F28F11/02 , B25B27/026 , F16L55/13 , Y10T29/49352 , Y10T29/49938 , Y10T29/4994 , Y10T29/53122
摘要： Both an apparatus and method for plugging a conduit, such as a tube in the tubesheet of a nuclear steam generator, is disclosed herein. The plugging apparatus generally comprises an inelastically expandable plug that contains a fluid-receiving cavity, and an expansion means including both a source of pressurized hydraulic fluid and a pull-rod member having a piston for advantageously applying both a radially expansive force and a compressive force to the plug at the same time in order to inelastically expand it into sealing engagement with the inner wall of a tube. In the apparatus of the invention, the compressive force exerted on the plug by the pull-rod member not only serves to inelastically deform the plug into a radially expanded shape, but is also used to seal the open end of the plug so that the pressurized hydraulic fluid admitted within the cavity of the plug will not escape. Both the apparatus and method of the invention are particularly well suited for installing plugs in tubes surrounded by relatively inelastic structures, such as tubesheets. Additionally, the invention conveniently and reliably plugs small diameter tubes in the peripheral regions of these tubesheets.
摘要翻译： 本文公开了一种用于堵塞导管（例如核蒸汽发生器的管板中的管）的装置和方法。 堵塞装置通常包括含有流体接收腔的非弹性可膨胀塞子，以及包括加压液压流体源和拉杆构件两者的膨胀装置，所述拉杆构件具有用于有利地施加径向膨胀力和压缩力的活塞 同时插入插塞，以便将其非弹性地膨胀成与管的内壁密封接合。 在本发明的装置中，通过拉杆构件施加在塞子上的压缩力不仅用于将塞子非弹性地变形成径向膨胀的形状，而且还用于密封塞子的开口端，使得加压 在插头腔内进入的液压流体不会逃逸。 本发明的装置和方法都特别适用于将插塞安装在由相对非弹性结构（例如管板）围绕的管中。 此外，本发明方便且可靠地在这些管板的周边区域中插入小直径管。
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公开(公告)号：US4571802A
公开(公告)日：1986-02-25
申请号：US605351
申请日：1984-04-30
CPC分类号： F22B37/58 , B23P19/025 , Y10T29/49352 , Y10T29/53796
摘要： Both an apparatus and a process for pulling tubes from a tubesheet with two relatively movable gripping means are disclosed herein. The apparatus of the invention is a tube puller which has upper and lower gripping means for gripping the section of the tube surrounded by the tubesheet. The two gripping means are mechanically linked together by means of an extendable connecting assembly. This assembly includes an outer sleeve where the lower gripping means is located, and a middle sleeve where the upper gripping means is located which is slidable a predetermined distance within the outer sleeve. In the process of the invention, a tube puller as heretofore described is inserted into the mouth of a tube. The lower gripping means is then engaged to the mouth of the tube. The upper gripping means is then engaged in a section of the tube beyond the tube mouth with the extendable connecting assembly in a contracted position. A pulling means including a hydraulic ram then applies a tensile force onto the lower gripping means in order to pull on the mouth of the tube and to plastically contract the outer diameter of the tube in the vicinity of the tubesheet. After such contraction occurs, the connecting assembly between the two gripping means extends to its maximum length, and the pulling means applies a tensile force to both the upper and lower gripping means. Both of the gripping means then coact to withdraw the tube from the tubesheet. The invention preserves the metallurgical properties of the section of tube between the two grippers, which is important when the tubes are being sampled for corrosion degradation.
摘要翻译： 本文公开了一种用于从具有两个相对可移动夹持装置的管板拉出管的装置和方法。 本发明的装置是一种管拉出器，其具有用于夹持由管板包围的管的部分的上和下夹持装置。 两个夹持装置通过可延伸的连接组件机械连接在一起。 该组件包括下夹持装置所在的外套筒和位于外套筒内可预定距离滑动的上夹紧装置的中套筒。 在本发明的方法中，将如上所述的管拔出器插入管的口中。 然后，下夹持装置接合到管的口部。 然后，上部夹紧装置接合在管子的一部分中超过管嘴，可伸缩的连接组件处于收缩位置。 包括液压油缸的牵引装置然后将拉力施加到下夹持装置上，以便拉动管的口并且塑性地收缩管板附近的管的外径。 在这种收缩发生之后，两个夹持装置之间的连接组件延伸到其最大长度，并且牵引装置对上部和下部夹持装置施加张力。 然后两个夹紧装置共同从管板中取出管子。 本发明保留了两个夹具之间的管段的冶金特性，这在管被取样用于腐蚀降解时是很重要的。
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公开(公告)号：US4312124A
公开(公告)日：1982-01-26
申请号：US97771
申请日：1979-11-27
申请人： Gregory L. Calhoun
发明人： Gregory L. Calhoun
CPC分类号： B25B27/026 , B23P19/025 , Y10S294/906 , Y10T29/53113 , Y10T29/5383
摘要： A multiple tube pulling apparatus for pulling, at one time, a plurality of stub-tubes from the tubesheet of a steam generator. Each tube gripping apparatus of the plurality is expanded into gripping arrangement by an axially retracted tapered rod. As the internal diameter of each stub-tube can vary, the amount of axial movement of each tapered rod to provide proper gripping engagement also varies. The present invention provides a single hydraulic cylinder for axially moving the plurality of tapered rods and includes spring members connecting each tapered rod to the hydraulic cylinder to accommodate the variations in axial movement of each rod necessary to obtain the proper gripping engagement for each stub tube. Further, a spring biased guide block maintains the gripping tubes on proper centers corresponding to the stub-tube centers and once the stub-tubes are removed from the tubesheet, the guide block pushes the stub-tubes off the tube gripping apparatus freeing the apparatus for another operation.
摘要翻译： 一种用于一次从蒸汽发生器的管板拉出多个短管的多管牵拉装置。 多个的每个管夹持装置通过轴向缩回的锥形杆扩展成夹紧装置。 由于每个短管的内径可以变化，每个锥形杆的轴向移动量以提供适当的夹紧接合也是变化的。 本发明提供了用于轴向移动多个锥形杆的单个液压缸，并且包括将每个锥形杆连接到液压缸的弹簧构件，以适应为每个短管获得适当的夹紧接合所需的每个杆的轴向运动的变化。 此外，弹簧偏压引导块将夹持管保持在对应于短管中心的适当中心上，并且一旦短管从管板上移除，引导块将管子从管夹持装置推出，释放装置 另一个操作。
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公开(公告)号：US4192067A
公开(公告)日：1980-03-11
申请号：US954041
申请日：1978-10-23
IPC分类号： B24B27/06 , B23D45/00 , B23D45/10 , B23D57/00 , B23D59/00 , B27B5/20 , B27B5/34 , F22B37/00 , F22B37/02 , G21C19/02 , G21F9/00 , G21F9/30 , B23D19/06 , B23D21/00 , B27B7/04
CPC分类号： F22B37/002 , B23D45/003 , B23D57/0084 , B23D59/002 , B27B5/20 , B27B5/34 , Y10T83/7755
摘要： Cutting apparatus having spaced apart cutters which can be brought closer together are disposed on one end of a boom which is movable in a plane transverse to the longitudinal axis of a closely packed tube bundle to cut out short segments from the tubes starting at the periphery and working through the tube bundle by bringing the cutters closer together to provide clearance as the cutters move deeper into the tube bundle.
摘要翻译： 具有能够靠近在一起的具有间隔开的切割器的切割装置设置在悬臂的一端上，该悬臂在垂直于紧密堆积的管束的纵向轴线的平面中可移动，以从外围切割出来的管的短段， 通过将切割器更靠近在一起而通过管束工作，以在切割器更深地移动到管束中时提供间隙。
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