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公开(公告)号：US4700053A
公开(公告)日：1987-10-13
申请号：US938369
申请日：1986-12-04
申请人： John M. Driggers , William E. Pirl
发明人： John M. Driggers , William E. Pirl
CPC分类号： C21D9/08 , B23K3/053 , F22B37/003 , H05B6/38 , B23K2201/14 , Y02P10/253
摘要： Both an apparatus and a process for accurately applying a correct amount of brazing heat to a conduit are disclosed herein. The apparatus generally comprises a mandrel including an electrical resistance wire heating element and a heat sensor for sensing the temperature of the inside walls of the conduit which were heated. The mandrel is preferably formed from a refractory material, and the heat sensor is located beneath the surface of the mandrel in order to insulate it from heat radiated from the electrical resistance wire wound about the mandrel body. The mandrel further includes an opening in the portion of the mandrel which surrounds the heat sensor in order that the sensor may be selectively exposed to a section of conduit to which heat was applied by sliding the mandrel to a position which aligns the opening with the wall of the heated conduit. The temperature of the conduit may then be determined as a function of the radiant heat received by the heat sensor. The invention is particularly useful in producing high quality braze joints between reinforcing sleeves inserted within damaged heat exchange tubes of a nuclear steam generator since the heat sensor allows the operator to determine whether or not a proper amount of brazing heat was applied to the sleeve/tube configuration.
摘要翻译： 本文公开了用于将准确地施加正确量的钎焊热量的设备和方法。 该设备通常包括一个心轴，它包括一个电阻线加热元件和一个热传感器，用于感测被加热的导管内壁的温度。 心轴优选由耐火材料形成，并且热传感器位于心轴表面下方，以使其与缠绕在心轴本体上的电阻丝辐射的热绝缘。 心轴还包括在心轴的围绕热传感器的部分中的开口，以便传感器可以选择性地暴露于通过将心轴滑动到将开口与壁对准的位置而施加热量的导管部分 的加热导管。 然后可以将导管的温度确定为由热传感器接收的辐射热的函数。 本发明特别可用于在插入核蒸汽发生器的损坏的热交换管内的加强套管之间生产高品质的钎焊接头，因为热传感器允许操作者确定是否适当量的钎焊热施加到套筒/管 组态。
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公开(公告)号：US5667706A
公开(公告)日：1997-09-16
申请号：US643223
申请日：1996-05-03
CPC分类号： B23K26/106 , B23K26/28 , B23K26/342
摘要： A laser welding apparatus and method are used to weld the inner surface of small diameter tubes such as nuclear heat exchanger tubes. A weld filler metal carried by a rotatable laser weld head is fed into the weld zone to produce deeply penetrating weldments of low profile. The apparatus and method can effectively be used to repair cracks in heat exchanger tubes to thereby provide extended service life.
摘要翻译： 使用激光焊接装置和方法来焊接诸如核热交换器管的小直径管的内表面。 由可旋转的激光焊头承载的焊接填充金属被馈送到焊接区域中以产生具有低外形的深穿透焊接件。 该设备和方法可以有效地用于修复热交换器管中的裂纹，从而延长使用寿命。
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13.发明授权System and method for laser welding an inner surface of a small diameter tubular member 失效用于激光焊接小直径管状构件的内表面的系统和方法
公开(公告)号：US5371767A
公开(公告)日：1994-12-06
申请号：US189777
申请日：1994-02-01
申请人： William E. Pirl
发明人： William E. Pirl
IPC分类号： G21C19/02 , B23K9/00 , B23K26/00 , B23K26/08 , B23K26/20 , B23K26/28 , B23K37/02 , B23K101/06
CPC分类号： B23K26/106 , B23K26/282
摘要： System and method for laser welding an inner surface of a small diameter tubular member. The system includes a laser for generating laser light and a mirror optically coupled to the laser for reflecting the light onto the inner surface of the tubular member to laser weld the inner surface of the tubular member. A rotator assembly is connected to the mirror for rotating the mirror in order to weld around the inner surface of the tubular member. The mirror and rotator assembly are each sized to be disposed in the tubular member at a location adjacent the portion of the tubular member to be welded. The rotator assembly has a spiral groove formed in the exterior thereof for receiving a cord wrapped around the exterior of the rotator assembly. An end of the cord is connected to a motor located externally to the tubular member, so that the cord is pulled as the motor is operated. As the cord is pulled, the rotator assembly rotates for rotating the mirror. A retainer is also provided for retaining the cord in the groove as the rotator assembly rotates. Therefore, the rotator assembly and the mirror associated therewith are rotated by a motor located externally to the tubular member. Thus, the system and method of the invention are capable of welding small diameter (e.g., diameters equal to or less than 0.313 inch) tubular members because the motor is located externally to the tubular member rather than being disposed in the tubular member.
摘要翻译： 用于激光焊接小直径管状构件的内表面的系统和方法。 该系统包括用于产生激光的激光器和与激光器光学耦合的反射镜，用于将光反射到管状部件的内表面上以激光焊接管状部件的内表面。 旋转器组件连接到反射镜以旋转反射镜，以便围绕管状构件的内表面焊接。 镜子和旋转器组件的尺寸被设计成在邻近待焊接的管状构件的部分的位置处设置在管状构件中。 旋转器组件具有形成在其外部的螺旋槽，用于接收缠绕在转子组件的外部的绳索。 绳的一端连接到位于管状构件外部的马达，使得当马达被操作时拉动绳索。 当绳被拉动时，转子组件旋转以旋转反射镜。 还设有保持器，用于当转子组件旋转时将绳索保持在槽中。 因此，转子组件和与之相关联的反射镜由位于管状部件外部的电动机旋转。 因此，本发明的系统和方法能够焊接小直径（例如，直径等于或小于0.313英寸）的管状构件，因为马达位于管状构件的外部，而不是设置在管状构件中。
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公开(公告)号：US5182429A
公开(公告)日：1993-01-26
申请号：US705050
申请日：1991-05-23
IPC分类号： B23K26/00 , B23K26/04 , B23K26/06 , B23K26/08 , B23K26/20 , B23K26/28 , B23K37/02 , G21D1/00
CPC分类号： B23K26/046 , B23K26/04 , B23K26/106 , B23K26/28
摘要： Both a system and method are provided for laser welding the inner walls of conduits, such as the sleeves used to repair the heat exchanger tubes of nuclear steam generators. The system generally comprises an elongated tubular housing, a fiber-optic cable for conducting remotely generated laser light into the tubular housing, a beam deflection mechanism supported within the distal end of the tubular housing and including a rotating mirror for radially reflecting and focusing light received from the fiber-optic cable around the inner wall of the sleeve, and a tracking assembly mounted on the distal end of the tubular housing for maintaining a constant radial distance between the mirror of the beam deflection mechanism and the inner wall of the sleeve despite any irregularities which may be present in the roundness of the sleeve. The tracking assembly includes at least one roller which is resiliently mounted in the tubular housing of the system behind the front portion of the mirror of the beam deflection mechanism. To facilitate mirror replacement, the distal end of the tubular housing is easily removable. To ensure reliable rotation of movement, an electric motor and gear train is mounted in the proximal end of the tubular housing. Finally, the fiber-optic cable that extends through the proximal end of the tubular housing is configured to traverse the electric motor and drive train with a single S bend in order to maintain a high light transmission efficiency through the cable.
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公开(公告)号：US4713952A
公开(公告)日：1987-12-22
申请号：US826453
申请日：1986-02-05
CPC分类号： B24B39/026 , B21D39/06 , Y10T29/479
摘要： An improved apparatus and process for rotopeening metallic conduits of limited accessibility, such as the peripherally located heat exchange tubes around the tubesheet of a nuclear steam generator, is disclosed herein. The bowl-like inner wall which lies directly adjacent to such peripherally-located tubes renders it difficult to insert a rotopeening spindle into the open ends of these tubes in order to work-harden these tubes in the tubesheet region. Generally, the apparatus of the invention comprises at least one flexible rotopeening spindle, an advancing mechanism for remotely and incrementally advancing the flexible spindle through an open end of a selected peripheral tube, and a frame for supporting both the flexible spindle and the advancing mechanism. The length of the advancing mechanism is substantially shorter than the length of the flexible spindle so that the spindle and the advancing mechanism may be easily placed into a peening position with respect to the most remotely located tubes. The advancing mechanism includes first and second grippers which utilize expandable bladders for selectively gripping and ungripping the spindle. The first gripper is mounted on the wall-facing side of the frame, and the second gripper is reciprocably movable with respect to the first gripper. Additionally, the second gripper is rotatable and is mechanically linked to a drive means, in order to render it capable of rotating the rotopeening spindle once it is inserted into a selected tube end.
摘要翻译： 本文公开了一种用于滚动有限可及性的金属管道的改进的装置和方法，例如在核蒸汽发生器的管板周围设置的外围设置的热交换管。 直接邻近这种周边定位的管子的碗状内壁使得难以将旋转主轴插入这些管的开口端中，以便在管板区域中加工硬化这些管。 通常，本发明的装置包括至少一个柔性滚动主轴，用于使柔性主轴通过选定的外围管的开口端远程地递增地推进的前进机构，以及用于支撑柔性主轴和推进机构的框架。 推进机构的长度远大于柔性主轴的长度，使得主轴和前进机构可以容易地相对于位于最远处的管放置在喷丸位置。 推进机构包括第一和第二夹持器，其利用可膨胀气囊来选择性地夹紧和脱离主轴。 第一夹持器安装在框架的面向墙壁的一侧，并且第二夹具可相对于第一夹持器往复运动。 另外，第二夹持器是可旋转的并且机械地连接到驱动装置，以便使其能够在滚动主轴插入到选定的管端中时旋转滚动主轴。
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公开(公告)号：US4571821A
公开(公告)日：1986-02-25
申请号：US526719
申请日：1983-08-26
申请人： William E. Pirl , John P. Vogeleer
发明人： William E. Pirl , John P. Vogeleer
CPC分类号： B23P19/022 , B21D3/05 , Y10T29/49352 , Y10T29/531 , Y10T29/53122 , Y10T29/53987
摘要： The hollow tubular member or blank which is to serve as a sleeve for a corroded tube of the steam generator of a nuclear reactor plant and which is too long to be manipulated under the tube sheet of the reactor, is prebent into a shape such that it can be manipulated and is then progressively straightened under the tube sheet as it is progressively inserted into the tube. The straightener includes a plurality of grooved rolls mounted staggered and rotatable in a train. Each roll forms a channel engaging half of the periphery of the member. The contour of the engaging surface of each roll is the same as the contour of the member over half of its peripheral surface so that each roll mates with the member over half of its peripheral surface. The rolls are in frictional engagement with the member and advance the member while bending it so that the material of the member is stressed beyond its elastic limit oppositely to the stress beyond the elastic limit, which produced the bending, sufficiently to straighten the hollow member.
摘要翻译： 用作核反应堆设备的蒸汽发生器的腐蚀管的套管的中空管状构件或坯件预制成一种形状，使得它 可以被操纵，然后在管板逐渐插入管中之前逐渐矫直。 整流器包括多个在列车中交错并可旋转的带槽辊。 每个辊形成接合构件的周边的一半的通道。 每个辊的接合表面的轮廓与其外周表面的一半以上的构件的轮廓相同，使得每个辊与构件超过其外周表面的一半以上配合。 辊与构件摩擦接合并且在弯曲的同时使构件前进，使得构件的材料被超出其超出弹性极限的应力的弹性极限，从而产生弯曲，足以使中空构件拉直。
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