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公开(公告)号：US4751944A
公开(公告)日：1988-06-21
申请号：US868226
申请日：1986-05-28
摘要： The tube plug comprises a substantially cylindrical sheath closed at one end and having a relatively smooth outer surface and a central cavity. An expandable shell is received within the central cavity of the sheath. An expander member is adapted to expand the shell from within by being axially translated within the shell, the expander member also being adapted to grip the inner surface of the shell to retain the expander member in the expanded position. The outside surface of the shell is preferably provided with a plurality of lands. A second embodiment of the tube plug comprises a sleeve, a closed shell member adapted to be inserted within the sleeve, and an expander member contained within the shell. Upon axial translation of the expander member within the shell, the shell is expanded into contact with the sleeve and the sleeve is expanded into contact with the tube, thereby sealing the tube.
摘要翻译： 管塞包括在一端封闭并具有相对光滑的外表面和中心腔的基本上圆柱形的护套。 可扩张的壳容纳在护套的中心腔内。 膨胀器构件适于通过在壳体内轴向平移从内部膨胀壳体，膨胀器构件还适于夹紧壳体的内表面以将膨胀器构件保持在展开位置。 壳体的外表面优选设置有多个平台。 管塞的第二实施例包括套筒，适于插入套筒内的封闭壳体构件和容纳在壳体内的膨胀器构件。 当膨胀器构件在壳体内轴向平移时，壳体膨胀成与套筒接触，并且套管膨胀成与管接触，从而密封管子。
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2.发明授权Method for controlling leakage through degraded heat exchanger tubes in the tubesheet region of a nuclear generator 失效用于通过核发电机的管板区域中的劣化的热交换器管来控制泄漏的方法
公开(公告)号：US5027507A
公开(公告)日：1991-07-02
申请号：US317706
申请日：1989-03-01
CPC分类号： F22B37/421 , B21D39/06 , F16L55/162 , F28F11/00 , G21C17/00 , Y10T29/49352 , Y10T29/49375 , Y10T29/49718 , Y10T29/49748 , Y10T29/49776 , Y10T29/4994
摘要： A method of controlling leakage through degraded heat exchanger tubes in the tubesheet region of a nuclear steam generator is disclosed herein. The method comprises radially expanding a section of the heat exchanger tube disposed within the bore of the tubesheet into leak resistant engagement so that the resultant leakage flow is equal to or less than an acceptable leakage flow rate. The expanded, leak resistant section is located above the degraded section of the heat exchanger tube and below the upper side of the tubesheet. The length L of the leak resistant section and the pressure P necessary to create it are determined by ascertaining a plurality of combinations of length Lx and pressure Px that would result in a sufficiently tight engagement between the heat exchanger tube and the tubesheet bore to achieve the desired leakage flow rate, and by choosing a combination of Lx, Px that results in the smallest length L without exceeding a pressure of 50 ksi (344.7 MPa).
摘要翻译： 本文公开了一种通过核蒸汽发生器的管板区域中的劣化的热交换器管来控制泄漏的方法。 该方法包括将设置在管板孔内的热交换器管的一部分径向膨胀成防漏接合，使得所产生的泄漏流量等于或小于可接受的泄漏流量。 膨胀的防漏部分位于热交换器管的退化部分的上方，并位于管板的上侧。 通过确定长度Lx和压力Px的多个组合来确定防漏部分的长度L和产生它所需的压力P，这将导致热交换器管和管板孔之间的足够紧密的接合，以实现 期望的泄漏流量，并且通过选择导致最小长度L而不超过50ksi（344.7MPa）的压力的Lx，Px的组合。
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公开(公告)号：US4771810A
公开(公告)日：1988-09-20
申请号：US868225
申请日：1986-05-28
IPC分类号： F16L55/136 , F22B37/02 , F28F11/02 , F16L55/00
CPC分类号： F16L55/136 , F28F11/02
摘要： The multi-seal tube plug comprises a substantially cylindrical sheath closed at one end and having a central cavity. An expander is received within the central cavity of the sheath and acts to expand the sheath into contact with the tube. The expander comprises a plurality of radially expandable disks having a central aperture and an expander member adapted to be received within the aperture and to expand the disks. The expanded disks expand a portion of the sheath into contact with the tube to sealingly engage the tube. The expander member is preferably conical and interacts with the conical inner surfaces of the disks. An alternate embodiment of the multi-seal tube plug uses conical washers rather than radially expandable flat disks. All embodiments of the multi-seal tube plug are easily removable and do not damage the tube.
摘要翻译： 多密封管塞包括在一端封闭并具有中心腔的基本上圆柱形的护套。 扩张器被容纳在护套的中心腔内并用于使护套膨胀以与管接触。 膨胀器包括多个径向可扩张的盘，其具有中心孔和适于容纳在孔内并扩张盘的膨胀器构件。 扩张的盘将护套的一部分扩展成与管接触以密封地接合管。 膨胀器构件优选地是圆锥形的并且与圆盘的圆锥形内表面相互作用。 多密封管塞的替代实施例使用圆锥形垫圈而不是可径向扩张的平盘。 多密封管塞的所有实施例都容易拆卸并且不会损坏管。
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公开(公告)号：US5255717A
公开(公告)日：1993-10-26
申请号：US584369
申请日：1990-09-18
CPC分类号： B23P19/025 , Y10T29/49352
摘要： An improved, easily removable plug for plugging the open end of a heat exchanger tube in a nuclear steam generator is disclosed herein. The plug generally comprises a cylindrical shell of Inconel.RTM. having tapered side walls, a closed end, an open end, a cork-shaped expander element disposed within the shell that radially expands the tapered side walls of the shell into sealing engagement with the inner walls of a tube when axially drawn from the closed to the open end of the shell, and a wall section in the interior of the shell between the closed end and the tapered side walls for receiving the expander element when this element is pushed back from the open end of the shell back against the closed end thereof, thereby affording clear mechanical access to the interior of the tapered side walls of the shell. The improved plug is particularly adapted for use with a plug removal system that includes an expander remover that axially pushes the expander element backward against the closed end of the shell, a TIG torch for creating axially oriented weld beads within the interior of the tapered side walls of the shell in order to contract these side walls and to relax the engagement between the plug and the heat exchanger tube, and a plug puller that pulls the plug from the tube.
摘要翻译： 本文公开了一种用于堵塞核蒸汽发生器中的热交换器管的开口端的改进的，易于移除的插塞。 插头通常包括Inconel TM的圆柱形外壳，其具有渐缩侧壁，闭合端，开口端，设置在壳体内的软木形膨胀器元件，其使壳体的锥形侧壁径向膨胀成与内壁密封接合 当从封闭的壳体的开口端轴向地拉出时，管的内壁上的壁部分在闭合端和锥形侧壁之间，用于当该元件从开口部被推回时接收膨胀元件 壳体的端部抵靠其封闭端部，从而提供对壳体的锥形侧壁的内部的清楚的机械通路。 改进的塞子特别适于与塞子移除系统一起使用，该塞子移除系统包括一个膨胀器去除器，其将膨胀器元件向后推靠在壳体的封闭端部，TIG手电筒用于在锥形侧壁的内部产生轴向取向的焊接珠 以便收缩这些侧壁并且松弛插头和热交换器管之间的接合，以及将插头从管拉出的插头拔出器。
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公开(公告)号：US4829660A
公开(公告)日：1989-05-16
申请号：US50799
申请日：1987-05-18
申请人： James W. Everett , John B. Gunter , William Woolfolk , Frank Sadofsky , Lawrence A. Nelson , George D. Fulmer , George G. Elder , Robert F. Keating
发明人： James W. Everett , John B. Gunter , William Woolfolk , Frank Sadofsky , Lawrence A. Nelson , George D. Fulmer , George G. Elder , Robert F. Keating
CPC分类号： B23P19/025 , Y10T29/49352 , Y10T29/49387 , Y10T29/49721 , Y10T29/49821 , Y10T29/49824 , Y10T29/531 , Y10T29/53122
摘要： An improved system for removing a plug from the open end of a heat exchanger tube in a nuclear steam generator is disclosed herein. It is particularly adapted for removing a plug formed from an elongated, cylindrical shell of Inconel.RTM. having a closed end, an open ends, and an expander element that radially expands the shell when axially drawn from the clossed to the open end of the shell. The system comprises an expander remover for axially pushing the expander element from the open end completely through the closed end of the plug shell, and a TIG torch for creating beads along the longitudinal axis of the plug shell which relax the engagement between the plug shell and the tube after the weld beams harden. Finally, the system includes a plug puller for pulling the loosened plug from the tube. The expander remover and plug puller maybe remotely operated by means of a robotic arm, and a compliance coupling is provided to facilitate alignment between these tools and the plugged end of a selected heat exchanger tube.
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公开(公告)号：US4765374A
公开(公告)日：1988-08-23
申请号：US110806
申请日：1987-10-21
IPC分类号： F16L55/136 , F28F11/02 , F16L55/12
CPC分类号： F28F11/02 , F16L55/136
摘要： The multi-seal tube plug comprises a substantially cylindrical sheath closed at one end and having a central cavity. An expander is received within the central cavity of the sheath and acts to expand the sheath into contact with the tube. The expander comprises a plurality of radially expandable disks having a central aperture and an expander member adapted to be received within the aperture and to expand the disks. The expanded disks expand a portion of the sheath into contact with the tube to sealingly engage the tube. The expander member is preferably conical and interacts with the conical inner surfaces of the disks. An alternate embodiment of the multi-seal tube plug uses conical washers rather than radially expandable flat disks. All embodiments of the multi-seal tube plug are easily removable and do not damage the tube.
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公开(公告)号：US5438862A
公开(公告)日：1995-08-08
申请号：US195498
申请日：1994-02-14
申请人： Robert F. Keating , David A. Snyder
发明人： Robert F. Keating , David A. Snyder
IPC分类号： G01M3/04 , G01M3/28 , G01M3/32 , G21C17/003 , F24H9/16
CPC分类号： G01M3/2853
摘要： System and method for in situ testing of the leak-tightness of a tubular member, which tubular member may be a nuclear steam generator heat transfer tube. The system includes a mandrel insertable into the tube, the mandrel having a pair of spaced-apart expandable bladders surrounding the mandrel. A first channel extends through the mandrel and is in communication with the bladders. A fluid supply circuit is in fluid communication with the first channel for supplying pressurized liquid to the bladders so that the bladders radially expand into sealing engagement with the inner diameter of the tube. As the bladders expand into sealing engagement with the tube, a sealed annular chamber is defined therebetween bounded by the bladders and the inner diameter of the tube. A second channel also extends through the mandrel, the second channel being in fluid communication with the fluid supply circuit at one end thereof and in communication with the chamber at the other and thereof in order to pressurize the chamber with the liquid. A controller is connected to the fluid supply circuit for measuring the flow rate of the liquid flowing through the fluid supply circuit to the chamber. Any crack in the tube wall adjacent the chamber will allow the liquid to escape therefrom at a characteristic flow rate corresponding to the size of the crack. However, the fluid supply circuit maintains the liquid pressure in the chamber so that the pressure and thus the liquid inventory in the chamber remains constant as the liquid leaks through the crack. The controller, which is connected to the flow meter, measures the flow rate and pressure of the liquid flowing through the fluid supply circuit. In view of the fact that the liquid (i.e., water) is incompressible, the flow rate through the crack and the pressure in the chamber are provided by measuring the flow rate and pressure of the liquid flowing through the fluid supply circuit.
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公开(公告)号：US06799124B2
公开(公告)日：2004-09-28
申请号：US10011454
申请日：2001-11-29
IPC分类号： G01B344
CPC分类号： G06Q10/06
摘要： A probabilistic method for optimizing the inspection of a heat exchanger that determines the maximum number of degraded tubes that can be permitted to remain in service for a contemplated interval of time without exceeding an allowable probability of a tube burst, based upon Extreme Value Probability Distribution theory. The method also determines the minimum number of tubes that need to be inspected to establish that no more than the determined maximum number of degraded tubes will be permitted to remain in service for the contemplated interval of time based upon Bayesian Acceptance Sampling Theory.
摘要翻译： 一种概率方法，用于优化热交换器的检查，该热交换器基于极值概率分布理论，确定可以允许在预定的时间间隔内保持使用的劣化管的最大数量，而不超过管爆裂的容许概率。 。 该方法还确定需要检查的管的最小数目，以确定不超过所确定的降解管的最大数量将被允许在基于贝叶斯验收采样理论的预期时间间隔内保持服务。
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9.发明授权Method of restricting transverse displacement of a nuclear heat exchanger tube support plate 失效限制核热交换器管支撑板的横向位移的方法
公开(公告)号：US5752317A
公开(公告)日：1998-05-19
申请号：US572975
申请日：1995-12-15
CPC分类号： B21D39/06 , B21D39/203 , F22B37/205 , F28F11/02 , F28F9/16 , Y10T29/49375 , Y10T29/531 , Y10T29/53122
摘要： Method of restricting transverse displacement of a nuclear heat exchanger tube support plate during a transient event, the support plate having a plurality of holes therethrough for passage of respective ones of a plurality of heat transfer tubes. The method includes radially expanding the tube adjacent the first side of the support plate to define a first expanded region thereat, the tube being expanded to a diameter greater than the diameter of the hole formed through the support plate. The method further includes radially expanding the tube adjacent the second side of the support plate to define a second expanded region thereat, the tube being expanded to a diameter greater than the diameter of the hole formed through the support plate. The first expanded region and the second expanded region coact to restrict transverse displacement of the support plate because the support plate is firmly captured between the first expanded region and the second expanded region.
摘要翻译： 在瞬时事件期间限制核热交换器管支撑板的横向位移的方法，所述支撑板具有穿过其中的多个孔，用于通过多个传热管中的相应的传热管。 所述方法包括使所述管邻近所述支撑板的第一侧径向膨胀以在其上限定第一扩张区域，所述管膨胀至直径大于通过所述支撑板形成的孔的直径。 所述方法还包括使所述管邻近所述支撑板的第二侧径向膨胀以在其上限定第二扩张区域，所述管膨胀至直径大于通过所述支撑板形成的孔的直径。 第一扩张区域和第二扩张区域共同作用以限制支撑板的横向位移，因为支撑板被牢固地收纳在第一扩张区域和第二扩张区域之间。
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10.发明授权
公开(公告)号：US5456290A
公开(公告)日：1995-10-10
申请号：US772622
申请日：1991-10-04
IPC分类号： G21C17/003 , F16L55/13 , F28F11/02 , G21C13/067 , G21D1/00 , F16L55/12
CPC分类号： F28F11/02 , F16L55/13 , G21C13/067 , Y02E30/40
摘要： Tube plug and method for plugging a heat exchanger tube having an inner wall, which tube plug has a reduced susceptibility to stress corrosion cracking. The tube plug includes a shell having a closed end, an open end and an outer wall, the shell defining a chamber therein in communication with the open end of the shell. Disposed in the chamber is an expander member for expanding the outer wall of the shell into sealing engagement with the inner wall of the tube. A sealing member engages the expander member and is disposed across the open end of the shell for sealing the chamber defined by the shell so that fluid can not enter the chamber to corrosively attack the shell.
摘要翻译： 用于堵塞具有内壁的热交换器管的管塞和方法，该管塞对应力腐蚀开裂的敏感性降低。 管塞包括具有闭合端，开口端和外壁的壳体，壳体限定与壳体的开口端连通的室。 设置在腔室中的膨胀器构件用于使壳体的外壁膨胀成与管的内壁密封接合。 密封构件接合膨胀器构件并且横跨壳体的开口端布置，用于密封由壳限定的室，使得流体不能进入室以腐蚀地侵入壳体。
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