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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：US4799305A
公开(公告)日：1989-01-24
申请号：US023947
申请日：1987-03-10
CPC分类号： F22B37/58 , B23P19/025 , B25B27/0028 , B25B27/023 , Y10T29/53835 , Y10T29/53887 , Y10T29/53952
摘要： A tube protection device is positioned within a heat exchange tube of a nuclear steam generator to span a defect region and protect same against damage or deformation during withdrawal of the tube from the generator for subsequent defect analysis and testing. The tube protection device includes gripper means at the opposite ends thereof which are expansible from a relaxed condition permitting movement of the device through the tube to a clamped condition, releasably, frictionally engaging the contiguous interior sidewall surfaces of the tube at positions respectively spaced from the defect and spanning the defect region. An installation tool includes an elongaged linkage mechanism insertable through an open end of the tube for positioning the tube protection device and for operating same from the accessible portion of the linkage mechanism exterior to the open end of the tube between said relaxed and clamped conditions, and for remote withdrawal of the tube protection device from the tube.
摘要翻译： 管保护装置位于核蒸汽发生器的热交换管内以跨越缺陷区域，并且在将管从发生器中取出期间保护它们免受损坏或变形，用于随后的缺陷分析和测试。 管保护装置包括在其相对端处的夹持装置，其可从放松状态膨胀，允许装置通过管移动到夹紧状态，可释放地摩擦地将管的邻近内侧壁表面与位于管 缺陷并跨越缺陷区域。 一种安装工具包括一个伸长的连杆机构，该连杆机构可以通过管子的开口端插入，用于定位管子保护装置，并且在所述松弛和夹紧的状态之间使管子开口端的外部连接机构的可触及部分操作;以及 用于远离管道保护装置从管中取出。
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公开(公告)号：US20090072530A1
公开(公告)日：2009-03-19
申请号：US11856119
申请日：2007-09-17
申请人： Gregory L. Calhoun
发明人： Gregory L. Calhoun
IPC分类号： F16L17/025
CPC分类号： F16L23/08 , F16L13/06 , F16L55/172 , G21C13/036 , G21C19/207 , Y02E30/40
摘要： A pipe clamp for reinforcing a welded joint between two pipes, having a plurality of circumferential clamp segments that are bolted together around the joint. One axial end of the clamp has circumferentially extended ridges that project inward and seat in corresponding circumferential grooves in a pipe on one side of the joint. The other axial end of the clamp has circumferentially spaced fingers that extend inward and fit into corresponding pockets on the other side of the weld joint. Either or both the ridges or the fingers have a taper whose cross-section reduces in an inward direction and fits in complimentary grooves or pockets on either side of the joint. The taper forces the opposite sides of the weld joint toward each other as the clamp segments are tightened together.
摘要翻译： 一种用于加强两个管之间的焊接接头的管夹，具有多个围绕接头螺栓连接的周向夹紧段。 夹具的一个轴向端部具有向内突出的圆周延伸的脊，并且位于接头一侧的管中的相应的圆周槽中。 夹具的另一轴向端部具有向内延伸的周向间隔的指状物，并且配合到焊接接头的另一侧上的相应的凹部中。 脊或手指中的一个或两个具有锥形，其横截面在向内方向上减小并且配合在接头两侧的互补槽或凹穴中。 当夹紧部分紧固在一起时，锥形迫使焊接接头的相对侧面彼此相向。
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公开(公告)号：US06167764A
公开(公告)日：2001-01-02
申请号：US09339459
申请日：1999-06-24
申请人： Gregory L. Calhoun
发明人： Gregory L. Calhoun
IPC分类号： G01N308
CPC分类号： B23P19/067 , B25B29/02 , G01L5/24 , G01N3/08 , G01N2033/0078 , G01N2203/0017 , G01N2203/0048
摘要： The tension in a stud is verified by determining the elongation of the stud while attached to a stud tensioner during the tensioning step. The pressure of hydraulic fluid in a hydraulically actuated tensioner is increased from a first low pressure to a higher pressure for elongating the stud while correlating the increase in pressure of the hydraulic fluid with the quantity of hydraulic fluid in the tensioner or with the displacement of a tensioner puller bar or piston. After a nut is tightened on the stud, the pressure of the hydraulic fluid is reduced from the higher pressure to a second low pressure while correlating the decrease in pressure of the hydraulic fluid with the travel of the puller bar or piston or correlating the decrease in pressure of the hydraulic fluid with the change in fluid volume. The elongation of the stud is then determined as a function of the difference in the correlated quantities of hydraulic fluid or the correlated differences in puller bar or piston travel at the first and second low pressures. Finally, the tensioner is detached from the stud.
摘要翻译： 通过在张紧步骤期间连接到螺柱张紧器时确定螺柱的伸长率来验证螺柱中的张力。 液压致动张紧器中的液压流体的压力从第一低压增加到较高压力以延伸螺柱，同时使液压流体的压力的增加与张紧器中的液压流体的量的增加相关联，或者与 张紧拉杆或活塞。 在螺柱上拧紧螺母之后，液压流体的压力从较高压力降低到第二低压，同时将液压流体的压力降低与拉杆或活塞的行程相关联，或将减小 液压油的压力随着流体体积的变化而变化。 然后根据液压流体的相关量的差异或在第一和第二低压下的拉杆或活塞行程的相关差异来确定螺柱的伸长率。 最后，张紧器与螺柱分离。
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公开(公告)号：US07798535B2
公开(公告)日：2010-09-21
申请号：US11856119
申请日：2007-09-17
申请人： Gregory L. Calhoun
发明人： Gregory L. Calhoun
IPC分类号： F16L21/02
CPC分类号： F16L23/08 , F16L13/06 , F16L55/172 , G21C13/036 , G21C19/207 , Y02E30/40
摘要： A pipe clamp for reinforcing a welded joint between two pipes, having a plurality of circumferential clamp segments that are bolted together around the joint. One axial end of the clamp has circumferentially extended ridges that project inward and seat in corresponding circumferential grooves in a pipe on one side of the joint. The other axial end of the clamp has circumferentially spaced fingers that extend inward and fit into corresponding pockets on the other side of the weld joint. Either or both the ridges or the fingers have a taper whose cross-section reduces in an inward direction and fits in complimentary grooves or pockets on either side of the joint. The taper forces the opposite sides of the weld joint toward each other as the clamp segments are tightened together.
摘要翻译： 一种用于加强两个管之间的焊接接头的管夹，具有多个围绕接头螺栓连接的周向夹紧段。 夹具的一个轴向端部具有向内突出的圆周延伸的脊，并且位于接头一侧的管中的相应的圆周槽中。 夹具的另一轴向端部具有向内延伸的周向间隔的指状物，并且配合到焊接接头的另一侧上的相应的凹部中。 脊或手指中的一个或两个具有锥形，其横截面在向内方向上减小并且配合在接头两侧的互补槽或凹穴中。 当夹紧部分紧固在一起时，锥形迫使焊接接头的相对侧面彼此相向。
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公开(公告)号：US4526135A
公开(公告)日：1985-07-02
申请号：US671012
申请日：1984-11-13
CPC分类号： G01B7/003 , F22B37/483
摘要： A sludge lance nozzle for removing sludge from between the tubes of a nuclear steam generator includes positioning apparatus mounted on top of the nozzle. The positioning apparatus includes a cylindrical eddy-current sensor mounted inside a cup-shaped non-magnetic electrically insulating spacer, which is in turn mounted in a cup-shaped support member fixedly secured to the nozzle. The tubes are arranged in rows and columns with the axes of the tubes in each column lying in a common column plane. The nozzle is moved perpendicular to the column planes close to one of the rows of tubes. The sensor produces a maximum-amplitude output signal when the sensing axis is coplanar with the column plane of a tube in the closest row of tubes and a minimum-amplitude output signal when the sensing axis is midway between adjacent tubes in the closest row of tubes.
摘要翻译： 用于从核蒸汽发生器的管之间除去污泥的污泥喷枪包括安装在喷嘴顶部的定位装置。 定位装置包括安装在杯形非磁性电绝缘垫片内部的圆筒形涡流传感器，其又安装在固定地固定到喷嘴上的杯状支撑件中。 管以行和列排列，每列中的管的轴位于公共柱平面中。 喷嘴垂直于靠近管排中的一列的柱平面移动。 当感应轴与最近排的管中的管的列平面共面时，传感器产生最大振幅输出信号，当感测轴位于最近排的管中的相邻管之间的中间时，传感器产生最小振幅输出信号 。
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7.发明授权
公开(公告)号：US5325407A
公开(公告)日：1994-06-28
申请号：US34988
申请日：1993-03-22
CPC分类号： G21C13/02 , G21Y2002/103 , G21Y2002/104 , G21Y2004/30 , Y02E30/40
摘要： Disclosed is a means for increasing coolant flow through the areas adjacent to where the removable top head closure is bolted to the body of pressurized water nuclear reactor. A circumferential plenum for coolant is provided between the upper flange of the core barrel, the inner wall of the pressure vessel body and the upper circular support plate and providing a plurality of orifices for coolant in the upper flange of the core barrel and the upper circular support plate whereby a coolant may be circulated through the core barrel flange, the circumferential plenum and the upper support plate and into the space enclosed by the removable top closure head.
摘要翻译： 公开了一种用于增加冷却剂流动的装置，该冷却剂流动通过与可移除的顶部头部封闭件螺栓连接到加压水核反应堆主体的区域相邻的区域。 在芯筒的上凸缘，压力容器本体的内壁和上圆形支撑板之间设置用于冷却剂的周向增压室，并在芯筒的上凸缘中提供多个用于冷却剂的孔， 支撑板，由此冷却剂可以循环通过芯筒凸缘，周向增压室和上支撑板并进入由可移除的顶盖封闭的空间。
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公开(公告)号：US4637588A
公开(公告)日：1987-01-20
申请号：US605354
申请日：1984-04-30
CPC分类号： F16L55/136 , F22B37/222 , Y10S277/921
摘要： A nozzle dam for providing a fluid-tight seal across a primary fluid nozzle in the plenum of a nuclear steam generating vessel includes an elongated shaft coupled at one end thereof to an anchor assembly frictionally engageable with the inner surface of the nozzle to anchor the dam in place and a fluid-impermeable seal apparatus coupled to the shaft and closing the nozzle and frictionally engageable with the inner surface thereof to form a fluid-tight seal. The seal apparatus includes a circular plate disposable in wedging frictional engagement with a frustoconical portion of the nozzle inner surface. The shaft extends through a central aperture in the plate and is threadedly engaged with a nut which holds the plate in place. The anchor assembly includes a foldable tripod arrangement coupled to the shaft in such a way that movement of the shaft toward the seal plate effects an increase in the frictional anchoring force. The seal assembly also includes an inflatable portion. In one embodiment this inflatable portion extends around the perimeter of the seal plate and is readily expandable. In another embodiment the inflatable portion includes inflatable pillows disposed between the seal plate and the anchor assembly and inflatable for completely closing the nozzle. A foldable tripod centering mechanism and a shaft tensioning tool are also disclosed.
摘要翻译： 用于在核蒸汽发生容器的气室中的主流体喷嘴上提供流体密封的喷嘴坝包括在其一端处联接到锚固组件的细长轴，其与喷嘴的内表面摩擦接合以锚定坝 并且液体不可渗透的密封装置联接到轴并且关闭喷嘴并与其内表面摩擦接合以形成流体密封。 密封装置包括与喷嘴内表面的截头圆锥形部分楔入摩擦接合的圆形板。 轴延伸穿过板中的中心孔，并与固定板的螺母螺纹接合。 锚固组件包括以这样的方式联接到轴的可折叠的三脚架装置，使得轴朝向密封板的运动影响摩擦锚定力的增加。 密封组件还包括可充气部分。 在一个实施例中，该可充气部分围绕密封板的周边延伸并且易于扩张。 在另一个实施例中，可膨胀部分包括设置在密封板和锚固组件之间的可充气枕头，并可充气以完全关闭喷嘴。 还公开了可折叠的三脚架定心机构和轴张紧工具。
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9.发明授权
公开(公告)号：US4285503A
公开(公告)日：1981-08-25
申请号：US59857
申请日：1979-07-20
CPC分类号： B23K7/005 , B23K7/10 , F22B37/002 , Y10T29/49352
摘要： A spacer and block cutting torch is lowered through the wrapper-to-shell annulus of a removed-top steam generator by addition of vertical sections of hollow-back column by vertical movement of a motorized carriage along a rack-and-guide track extending upwardly from atop the wrapper and manipulation of column clamps, one movable with the carriage and the other affixed to the wrapper, to transfer column weight from carriage to wrapper-top during adding and subtracting column sections. The rearward concave side of the column, held flush with the wrapper wall, readily accepts and serves to enclose operating gas hoses for the cutting torch. Yieldable bias means cooperates with the interior of the generator shell to urge the concave side of the column toward the wrapper.
摘要翻译： 通过将电动托架沿着向上延伸的齿条和导轨的垂直运动，通过添加垂直部分的中空后部柱体，将间隔件和块状切割炬降低通过去除顶部蒸汽发生器的包裹 - 壳体环空 从包装纸和夹具的操作上，一个可移动的托架和另一个固定到包装纸上，以便在添加和减少列部分时将柱重量从托架转移到包装纸顶部。 柱的后凹面与包装壁保持平齐，容易接受并用于封闭用于割炬的操作气体软管。 可产生的偏压装置与发生器壳体的内部配合以将柱的凹面朝向包装物推动。
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公开(公告)号：US4238663A
公开(公告)日：1980-12-09
申请号：US953658
申请日：1978-10-23
CPC分类号： B23K7/005 , Y10T29/49821 , Y10T29/49828 , Y10T83/8854
摘要： One or more pairs of vertically-spaced-apart sidewardly-aimable plasma arc cutting torches, the upper one angled upward and the bottom one downward, on the end of a horizontal boom movable longitudinally fore and aft and angularly sideward, are used to double-cut the tube bundle of a steam generator progressively in a manner clearing a path that accommodates torch assembly advancement.
摘要翻译： 一对或多对垂直间隔开的侧向瞄准的等离子弧切割炬，上方一个向上倾斜的底部，一个向下倾斜的水平支臂的端部，其纵向前后移动并且有角度的侧向， 以清理容纳手电筒组件前进的路径的方式逐渐切割蒸汽发生器的管束。
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