公开(公告)号：US4829648A

公开(公告)日：1989-05-16

申请号：US6845

申请日：1987-01-27

申请人： Thomas E. Arzenti ,  William E. Pirl ,  Annette M. Costlow

发明人： Thomas E. Arzenti ,  William E. Pirl ,  Annette M. Costlow

IPC分类号： F22B37/02 ,  B21D39/20 ,  B23P19/02 ,  F22B37/00 ,  F28F11/02

CPC分类号： B23P19/022 ,  B21D39/203 ,  F22B37/003 ,  F28F11/02 ,  Y10T29/49352 ,  Y10T29/49387 ,  Y10T29/531 ,  Y10T29/53113 ,  Y10T29/5383

摘要： An apparatus and method for remotely inserting and positioning a sleeve-loaded mandrel within a damaged tube mounted in the tubesheet of a nuclear steam generator is disclosed herein. The apparatus of the invention generally comprises a frame, a mounting mechanism for detachably and pivotally mounting the frame to the open end of one of a first tube in the tubesheet, an advancing assembly supported by the frame for remotely inserting and advancing the sleeve-loaded mandrel to a position across a damaged section of the selected tube, and a drive train for pivotally positioning the advancing assembly into alignment with the open end of the selected tube. In the preferred embodiment, the advancing means is formed from the pair of hydraulically operated grippers, one of which is reciprocably movable with respect to the other. Additionally, the mounting mechanism inlcudes a double-action hydraulic cylinder that is capable of translating the frame into engagement with the tubesheet after the advancing assembly has been pivoted into alignment with the damaged tube. In the method of the invention, the first tube is chosen so that the advancement assembly may be pivoted into position under two or more tubes that need to be sleeved.

公开(公告)号：US4876871A

公开(公告)日：1989-10-31

申请号：US250737

申请日：1988-09-29

申请人： Thomas E. Arzenti ,  Robert D. Senger

发明人： Thomas E. Arzenti ,  Robert D. Senger

IPC分类号： G21C17/003 ,  B21D39/10 ,  F16L55/18 ,  F22B37/02 ,  F28F11/02

CPC分类号： F28F11/02 ,  B21D39/10 ,  F16L55/18 ,  Y10T29/53122

摘要： A flexible hardrolling mandrel for expanding a sleeve within a tube of a nuclear steam generator is disclosed herein. The flexibility of the tool facilitates the insertion of the tool into tubes of the nuclear steam generator that have only a limited accessibility, and the tool is designed to transfer sufficient torque as required for hardrolling by way of the flexible design. Generally, the hardroll mandrel assembly includes an elongate housing with flex joints along its length, a roller cage rotatably mounted to the housing supporting at least one roller, a tapered actuator shaft slidable within the roller cage to extend the roller, a flexible inner shaft connected to the actuator shaft and drivingly connected to the housing near the roller cage, and an end effector and drive device for imparting torque to the housing. The driving torque is then transferred from the housing to the flexible inner shaft at the end thereof to drive the tapered actuator shaft, thereby providing the required hardrolling torque and minimizing the torque losses associated with flexible drive shafts.

摘要翻译： 本文公开了一种用于在核蒸汽发生器的管内膨胀套管的柔性硬质心轴。 该工具的灵活性有助于将工具插入到仅具有有限可及性的核蒸汽发生器的管中，并且该工具被设计成通过柔性设计转移足够的扭矩以进行硬化。 通常，硬卷轴组件包括具有沿其长度的柔性接头的细长壳体，可旋转地安装到支撑至少一个辊的壳体的滚子保持架，可在滚子保持架内滑动以延伸滚子的锥形致动器轴，连接到柔性内轴 并且驱动地连接到靠近滚子保持架的壳体，以及用于向壳体施加扭矩的端部执行器和驱动装置。 然后驱动扭矩在其端部从壳体转移到柔性内轴以驱动锥形致动器轴，从而提供所需的硬滚动扭矩并使与柔性驱动轴相关联的扭矩损失最小化。

公开(公告)号：US4955235A

公开(公告)日：1990-09-11

申请号：US369725

申请日：1989-06-23

申请人： Michael J. Metala ,  William G. Clark, Jr. ,  Warren R. Junker ,  Lee W. Burtner ,  Thomas E. Arzenti ,  Harold P. Johnson ,  Robert P. Vestovich ,  Bruce W. Bevilacqua

发明人： Michael J. Metala ,  William G. Clark, Jr. ,  Warren R. Junker ,  Lee W. Burtner ,  Thomas E. Arzenti ,  Harold P. Johnson ,  Robert P. Vestovich ,  Bruce W. Bevilacqua

IPC分类号： G01N27/90 ,  G01N29/22 ,  G01N29/265

CPC分类号： G01N29/265 ,  G01N27/902 ,  G01N27/9046 ,  G01N29/221 ,  G01N2291/044 ,  G01N2291/045 ,  G01N2291/048 ,  G01N2291/105 ,  G01N2291/2636

摘要： Both an apparatus and a method for simultaneously inspecting the walls of a tube with both ultrasonic and eddy current probes is disclosed herein. The apparatus generally comprises a cylindrical housing assembly insertable within the tube to be inspected, and a probe carrier rotatably mounted within and helically movable with respect to the housing. The probe carrier holds three ultrasonic probes for transmitting ultrasonic beams which are directly oriented radially, chordally, and axially with resepect to the longitudinal axis of the tube, as well as an eddy current probe for simultaneously inspecting the walls of the tube with electromagnetic lines of flux. The apparatus further includes a helical drive train formed from a lead screw assembly having a motor means, a drive shaft, and a drive sleeve for imparting a helical scanning motion to the probe carrier with respect to the housing. The interior of the drive sleeve is slidably engaged to the shaft which is in turn coupled to the output of the motor, while the outside of the drive sleeve is threadedly engaged to the interior of the housing. The probe carrier is in turn coupled to the drive sleeve. In the method of the invention, the data generated by the three eddy current probes is correlated with the data generated by the eddy current probe for each specific section of the tube, and displayed simultaneously to the system operator. The resulting complementary display of both ultrasonic and eddy current probe information allows the system operator to accurately determine the size, shape and nature of any flaws which may be present in the walls of the tube.

摘要翻译： 本文公开了一种用于同时检查具有超声波和涡流探针的管壁的装置和方法。 该装置通常包括可插入待检查的管内的圆柱形壳体组件和可旋转地安装在其内并相对于壳体螺旋移动的探针架。 探针架支撑三个超声波探头，用于传输超声波束，该超声波束直接径向，弦向和轴向定向到管的纵向轴线，以及涡流探针，用于同时用电磁线检测管的壁 助焊剂 该装置还包括由具有马达装置，驱动轴和驱动套筒的导螺杆组件形成的螺旋传动系，用于相对于壳体向探针支架施加螺旋扫描运动。 驱动套筒的内部可滑动地接合到轴，该轴又联接到马达的输出，而驱动套筒的外部螺纹地接合到壳体的内部。 探头托架又耦合到驱动套筒。 在本发明的方法中，由三个涡电流探头产生的数据与由涡流探针针对管的每个特定部分生成的数据相关，同时显示给系统操作者。 所得到的超声波和涡流探针信息的互补显示允许系统操作者准确地确定可能存在于管壁中的任何缺陷的尺寸，形状和性质。

公开(公告)号：US4856337A

公开(公告)日：1989-08-15

申请号：US79860

申请日：1987-07-30

申请人： Michael J. Metala ,  William G. Clark, Jr. ,  Warren R. Junker ,  Lee W. Burtner ,  Thomas E. Arzenti ,  Harold P. Johnson ,  Robert P. Vestovich ,  Bruce W. Bevilacqua

发明人： Michael J. Metala ,  William G. Clark, Jr. ,  Warren R. Junker ,  Lee W. Burtner ,  Thomas E. Arzenti ,  Harold P. Johnson ,  Robert P. Vestovich ,  Bruce W. Bevilacqua

IPC分类号： G01N27/90 ,  G01N29/04 ,  G01N29/06 ,  G01N29/22 ,  G01N29/265 ,  G21C17/003

CPC分类号： G01N29/221 ,  G01N27/902 ,  G01N27/9046 ,  G01N29/0618 ,  G01N29/265 ,  G01N2291/02854 ,  G01N2291/044 ,  G01N2291/045 ,  G01N2291/048 ,  G01N2291/105 ,  G01N2291/2636

摘要： Both an apparatus and a method for simultaneously inspecting the walls of a tube with both ultrasonic and eddy current probes is disclosed herein. The apparatus generally comprises a cylindrical housing assembly insertable within the tube to be inspected, and a probe carrier rotatably mounted within and helically movable with respect to the housing. The probe carrier holds three ultrasonic probes for transmitting ultrasonic beams which are directly oriented radially, chordally, an axially with respect to the longitudinal axis of the tube, as well as an eddy current probe for simultaneously inspecting the walls of the tube with electromagnetic lines of flux. The apparatus further includes a helical drive train formed from a lead screw assembly having a motor means, a drive shaft, and a drive sleeve for imparting a helical scanning motion to the probe carrier with respect to the housing. The interior of the drive sleeve is slidably engaged to the shaft which is in turn coupled to the output of the motor, while the outside of the drive sleeve is threadedly engaged to the interior of the housing. The probe carrier is in turn coupled to the drive sleeve. In the method of the invention, the data generated by the three eddy current probes is correlated with the data generated by the eddy current probe for each specific section of the tube, and displayed simultaneously to the system operator. The resulting complementary display of both ultrasonic and eddy current probe information allows the system operator to accurately determine the size, shape and nature of any flaws which may be present in the walls of the tube.

公开(公告)号：US4771526A

公开(公告)日：1988-09-20

申请号：US785291

申请日：1985-10-07

申请人： Thomas E. Arzenti ,  William E. Pirl

发明人： Thomas E. Arzenti ,  William E. Pirl

IPC分类号： F28F11/06 ,  B23P19/02 ,  F22B37/00 ,  F22B37/02 ,  F28F11/00 ,  G21D1/00 ,  B21D53/00 ,  B23P19/04

CPC分类号： F22B37/003 ,  B23P19/022 ,  Y10T29/49352 ,  Y10T29/53113 ,  Y10T29/5383 ,  Y10T29/53839

摘要： A tool for inserting sleeve blanks in damaged steam-generator tubes of light weight capable of being manipulated by ROSA, a remotely operated service arm. ROSA permits the tool to be attached externally of the channel head of the steam generator.The tool includes a fixed gripper and a moveable gripper. The gripping member of each gripper is a flexible sheet or bladder which conforms readily to the surface being engaged. For insertion, the sleeve blank is mounted on a mandrel. The insertion is carried out by operating the grippers repeatedly through the following cycle until the sleeve blank is inserted into the damaged tube:(a) The moveable gripper is set in the lowermost position.(b) The fixed gripper is open.(c) The moveable gripper engages the sleeving assembly.(d) The moveable gripper raises the sleeving assembly to the uppermost position.(e) The sleeving assembly is engaged by the fixed gripper.(f) The moveable gripper is disengaged from the sleeving assembly.(g) The moveable gripper is returned to the lowermost position to start a succeeding cycle.For positioning, the tool includes a closed-circuit TV unit for centering the tool with reference to a tube other than the damaged tube and another closed-circuit TV unit for monitoring the insertion of the sleeve blank.

摘要翻译： 用于将套筒坯料插入损坏的重量轻的蒸汽发生器管中的工具，能够由遥控操作臂ROSA操纵。 ROSA允许将工具连接到蒸汽发生器的通道头的外部。 该工具包括一个固定夹具和一个可移动夹具。 每个夹持器的夹持构件是柔性片或囊，容易地与被接合的表面相一致。 为了插入，套筒坯件安装在心轴上。 通过以下循环反复操作夹具来进行插入，直到套筒坯件插入损坏的管中：（a）可移动的夹持器被设置在最低位置。 （b）固定夹具打开。 （c）可移动夹具接合套管组件。 （d）可移动的夹具将套管组件提升到最高位置。 （e）套筒组件由固定夹具接合。 （f）可移动的夹持器从套管组件脱离。 （g）可移动夹具返回到最低位置以开始后续循环。 为了定位，该工具包括一个闭路电视单元，用于相对于损坏的管以外的管对准该工具，另一个闭路电视单元用于监视套筒坯的插入。

公开(公告)号：US4714289A

公开(公告)日：1987-12-22

申请号：US5388

申请日：1987-01-09

申请人： Thomas E. Arzenti ,  William E. Pirl

发明人： Thomas E. Arzenti ,  William E. Pirl

IPC分类号： B23P19/00 ,  B25B5/06 ,  B25J15/00 ,  B66C1/46

CPC分类号： B25B5/065 ,  B23P19/00 ,  B25J15/0023

摘要： A gripper assembly whose gripping member is a thin (0.050" to 0.060") pliable elastometer, typically of a Pelethane compound having high coefficient of friction with respect to the surface to be gripped. The assembly includes a hollow retainer formed of abutting retainer sections. Internally the sections form a circularly cylindrical surface. The gripping member is circularly cylindrical and is mounted on the retainer so that it extends over the internal cylindrical surface. The ends of the gripping member have rings which are sealed pressure-tight in slots in the end surfaces of the retainer. Within the gripping member there is a cage formed of rods joined by rings for centering an object to be gripped by windows and defined between the rods and rings of the cage. The retainer has a port through which a fluid (air) under pressure is injected. The retainer has a slot connected to the port so that the fluid is distributed over the region between the gripping member and the internal surface of the retainer causing the gripping member to exert pressure on the object to be gripped.

摘要翻译： 夹持器组件，其夹持构件是薄的（0.050“至0.060”）柔韧的弹性计，典型地是具有相对于被夹紧表面的高摩擦系数的聚乙烯化合物。 组件包括由邻接的保持器部分形成的空心保持器。 在内部，这些部分形成圆柱形表面。 夹持构件是圆柱形的并且安装在保持器上，使得其在内部圆柱形表面上延伸。 夹持构件的端部具有在保持器的端表面中的狭缝中被密封地密封的环。 在夹持构件内，存在由杆连接的保持架，所述杆由环连接，用于对准由窗户夹持的物体并且限定在保持架的杆和环之间。 保持器具有一个端口，通过该端口注入压力下的流体（空气）。 保持器具有连接到端口的槽，使得流体分布在夹持构件和保持器的内表面之间的区域上，使得夹持构件对待夹持的物体施加压力。