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1.发明授权Apparatus for attaching key member to nuclear fuel assembly grid and detaching same therefrom 失效用于将关键构件附接到核燃料组件网格并将其从其分离的装置
公开(公告)号：US5313507A
公开(公告)日：1994-05-17
申请号：US972370
申请日：1992-11-05
申请人： Katsunori Ohuchi , Junichi Oyama , Akio Sando
发明人： Katsunori Ohuchi , Junichi Oyama , Akio Sando
摘要： An apparatus for attaching a key member to a nuclear fuel assembly grid and detaching the same therefrom is disclosed. The apparatus includes a supply and recovery mechanism, an inserting and removing mechanism, and a rotating mechanism. The supply and recovery mechanism operates to supply the key member to a prescribed position adjacent to the grid and recover the same. The inserting and removing mechanism is disposed between the supply and recovery mechanism and the grid, and operates to insert the key member supplied from the supply and recovery mechanism into the grid and remove the key member from the grid to recover the same to the supply and recovery mechanism. The rotating mechanism is disposed adjacent to the inserting and removing mechanism, and operates to rotate the key member inserted in the grid in a prescribed direction about the longitudinal axis to attach the same to the grid and rotate the same in a direction opposite to the prescribed direction to detach the same from the grid.
摘要翻译： 公开了一种用于将键构件附接到核燃料组件网格并将其从其分离的装置。 该装置包括供应和恢复机构，插入和移除机构以及旋转机构。 供应和恢复机构操作以将关键构件提供给与电网相邻的规定位置并恢复。 插入和移除机构设置在供应和恢复机构与电网之间，并操作以将从供应和恢复机构供应的钥匙件插入电网中，并将钥匙元件从电网中取出以将其恢复到电源和 恢复机制。 所述旋转机构设置在所述插入移除机构的附近，并且操作以使围绕所述纵向轴线的规定方向插入所述格栅中的所述键构件旋转，以将其附接到所述格栅并沿与所述规定的方向相反的方向旋转 方向从网格分离。
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公开(公告)号：US5274684A
公开(公告)日：1993-12-28
申请号：US966008
申请日：1992-10-23
申请人： Masashi Yoshida , Akio Sando , Junichi Oyama , Katsunori Ohuchi
发明人： Masashi Yoshida , Akio Sando , Junichi Oyama , Katsunori Ohuchi
摘要： The present invention presents a method and an apparatus for assembling a fuel assembly which is free of surface damage on the fuel rod surfaces, and of distortions caused by residual stresses. Such problems are introduced by the method of inserting the fuel rods into the grids, and the sequence of attaching the control rod guiding pipes. In the conventional method, the guiding pipes are attached to the respective grids first and the fuel rods are inserted in the grids while the holding mechanisms (such as spring force against a dimple formed on the grid wall) are active. In the invented assembling method, the sprigs are deactivated first and then the fuel rods are inserted into the grids. Once the assembly is made firm with all the fuel rods in place and fixed firmly to the grids, the control rod guiding pipes are inserted into the grids and the pipes are fixed rigidly to the respective grids. By performing the assembling operation in the above sequence, slight shifting of the grids which occurs on fixing the pipes to the grids, during the conventional method, is prevented. The final assembly produced according to the invented method is free of surface damage and the overall quality of alignment of the assembly is excellent.
摘要翻译： 本发明提出了一种用于组装燃料组件的方法和装置，其在燃料棒表面上没有表面损伤以及由残余应力引起的变形。 这些问题是通过将燃料棒插入网格的方法和连接控制杆引导管的顺序引入的。 在常规方法中，引导管首先附接到各个格栅，并且燃料棒被插入格栅中，同时保持机构（诸如形成在网格壁上的凹坑的弹力）是活动的。 在本发明的组装方法中，首先将小柱排除，然后将燃料棒插入网格中。 一旦组装牢固，所有燃料棒就位就位并牢固地固定在网格上，控制杆导管插入网格中，管道固定在相应的格栅上。 通过以上述顺序进行组装操作，防止了在常规方法中将管道固定到栅格上时发生的栅格的轻微移动。 根据本发明的方法生产的最终组件没有表面损伤，并且组件的整体质量优良。
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公开(公告)号：US5303273A
公开(公告)日：1994-04-12
申请号：US996065
申请日：1992-12-23
申请人： Taichi Koiwai , Katsunori Ohuchi , Akio Sando
发明人： Taichi Koiwai , Katsunori Ohuchi , Akio Sando
摘要： An apparatus for assembling a nuclear fuel assembly is disclosed. The apparatus includes a deflecting device which is disposed adjacent to the grid and deflects grid springs away from dimples opposing thereto. The deflecting device includes a tubular member, a rod member and a drive mechanism. The tubular member has a plurality of circumferentially divided sleeve pieces. The rod member is releasably inserted in the tubular member for sliding movement therealong. The drive mechanism is drivingly connected to the rod member and moves the rod member in the tubular member in a longitudinal direction thereof to bring the rod member into urging engagement with the sleeve pieces of the tubular member, whereby the sleeve pieces are deflected to be urged against the spring to deflect the same.
摘要翻译： 公开了一种组装核燃料组件的装置。 该装置包括偏转装置，该偏转装置邻近格栅设置并使网格弹簧远离与其相对的凹坑。 偏转装置包括管状构件，杆构件和驱动机构。 管状构件具有多个周向分开的套筒件。 杆构件可释放地插入管状构件中，用于沿着其滑动运动。 驱动机构驱动地连接到杆构件，并且使杆构件在管状构件的纵向方向上移动，以使杆构件与管状构件的套筒件压力接合，由此套筒件被偏转以被推动 反对弹簧偏转相同。
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公开(公告)号：US5475913A
公开(公告)日：1995-12-19
申请号：US230240
申请日：1994-04-20
申请人： Junichi Oyama , Katsunori Ohuchi , Shunji Ono , Toshiyuki Kawagoe
发明人： Junichi Oyama , Katsunori Ohuchi , Shunji Ono , Toshiyuki Kawagoe
CPC分类号： G21C3/334 , Y02E30/40 , Y10T29/4994
摘要： A method of assembling a fuel assembly is presented so as to reduce radiation exposure to the assembly workers and to simplify the assembly procedure. Sleeves are pre-attached to an upper nozzle, and the guide pipes are inserted into respective grid cells through the sleeves of the upper nozzle and through the sleeves of the grids. The guide pipes are fixed in place to the sleeves of the upper nozzle and of the grids by bulging. There is no welding step necessary to join any of the assembly components while the assembly is in a semi-assembled condition. Therefore, the method is simple and efficient, and reduces the risk of radiation exposure to the assembly workers.
摘要翻译： 提出了一种组装燃料组件的方法，以减少对组装工人的辐射暴露并简化组装过程。 套管预先连接到上喷嘴，并且引导管通过上喷嘴的套筒和网格的套筒插入到相应的格格单元中。 引导管通过凸起固定在上喷嘴和网格的套筒上。 当组件处于半组装状态时，不需要焊接步骤来连接任何组件部件。 因此，该方法简单高效，降低组装工人辐射暴露的风险。
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公开(公告)号：US5396526A
公开(公告)日：1995-03-07
申请号：US139035
申请日：1993-10-21
CPC分类号： G21C21/00 , G21C3/334 , G21Y2002/205 , G21Y2002/302 , G21Y2004/30 , G21Y2004/401 , Y02E30/40
摘要： An apparatus is presented for removing the inner and outer keys from a support grid of a fuel assembly automatically or by mechanical methods. The apparatus removes a line of keys from a loaded assembly inserted into a grid through an opening section of the grid to deflect the springs. Both ends of the keys are engaged with the engaging members, and one set of keys are rotated in one direction while the other set of keys are rotated in the opposite direction. The springs are then released to press on the fuel rods firmly in place between the springs and the dimples in the grid cell. The keys are removed from the grid by clamping or holding the keys and moving the keys together with the clamping/holding device in the key axis direction by operating the driving device until the keys are removed completely from the grid.
摘要翻译： 提供了一种用于从燃料组件的支撑格栅自动或通过机械方法去除内键和外键的装置。 该装置从通过网格的开口部分插入格栅的装载组件中移除一行键以偏转弹簧。 键的两端与接合构件接合，并且一组键在一个方向上旋转，而另一组键沿相反方向旋转。 弹簧然后被释放以将燃料棒牢固地压在弹簧和网格中的凹坑之间的位置。 通过夹紧或保持键并通过操作驱动装置将键与夹持/保持装置一起沿键轴方向移动，从而将钥匙从网格中移除，直到钥匙从电网完全移除。
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公开(公告)号：US5400498A
公开(公告)日：1995-03-28
申请号：US138965
申请日：1993-10-21
申请人： Katsunori Ohuchi , Nobuo Miwa , Hitoshi Inada
发明人： Katsunori Ohuchi , Nobuo Miwa , Hitoshi Inada
CPC分类号： G21C21/00 , G21C3/334 , G21Y2002/205 , G21Y2002/302 , G21Y2004/30 , G21Y2004/401 , Y02E30/40 , Y10T29/531
摘要： An apparatus is presented for removing the keys smoothly and reliably from support grids of a fuel assembly. The apparatus performs the task of removing the keys, which had been inserted into the grid through the opening sections of the grid, and enables mechanization and automation of the key removal operation. The apparatus has a robotic arm including a pair of parallel grid support members freely movably disposed at the end of the robotic arm for clamping onto the side edges of the grid. The apparatus further includes a key rotation device disposed on the support arm for engaging with and rotating the keys; a key moving device disposed on the grid support members so as to hold the keys and move the keys in the direction of the key axis.
摘要翻译： 提供一种用于从燃料组件的支撑栅格平滑可靠地移除键的装置。 该装置执行通过电网的开口部分已经插入到电网中的键的任务，并且能够实现钥匙拆卸操作的机械化和自动化。 该装置具有机器臂，其包括一对平行的栅格支撑构件，其可自由移动地设置在机器臂的端部处以夹紧在栅格的侧边缘上。 所述装置还包括设置在所述支撑臂上的键旋转装置，用于与所述键接合并旋转所述键; 设置在所述格栅支撑构件上的键移动装置，以便保持所述键并沿所述键轴的方向移动所述键。
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公开(公告)号：US5323432A
公开(公告)日：1994-06-21
申请号：US964884
申请日：1992-10-22
申请人： Katsunori Ohuchi , Nobuo Miwa , Masashi Yoshida
发明人： Katsunori Ohuchi , Nobuo Miwa , Masashi Yoshida
摘要： The present invention presents an apparatus to facilitate the loading of specific fuel rods into the specific grid cells of the grids of a fuel assembly. The loading apparatus utilizes air-pressure operated loading cylinders to push out the specific fuel rods from a fuel rod magazine into the corresponding grid cells. The loading apparatus operates in conjunction with a series of fuel rod support rollers which provide support to the fuel rods, being charged into the grids, from the underside of the fuel rods to prevent sagging of the tip end, thus avoiding scraping against the straps of the grids when entering the grid cells, and causing potentially harmful surface scratches on the fuel rods.
摘要翻译： 本发明提供一种便于将特定燃料棒装载到燃料组件的格栅的特定栅格单元中的装置。 装载装置利用空气压力操作的装载缸将特定的燃料棒从燃料棒仓推出到相应的栅格电池中。 装载装置与一系列燃料棒支撑辊一起操作，这些燃料棒支撑辊从燃料棒的下侧向燃料棒提供支撑，从燃料棒的下侧装入，以防止尖端下垂，从而避免刮擦 进入栅格电池时的栅格，并导致燃料棒上的潜在有害的表面划痕。
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公开(公告)号：US5301214A
公开(公告)日：1994-04-05
申请号：US962105
申请日：1992-10-16
申请人： Akihiro Kato , Masashi Yoshida , Katsunori Ohuchi
发明人： Akihiro Kato , Masashi Yoshida , Katsunori Ohuchi
摘要： The present invention relates to a pull-in rod type loader for loading fuel rods efficiently and conveniently from a fuel rod magazine to a fuel assembly. The control rod pipes and fuel rods are held in assigned grid cells, respectively termed pipe-cells and fuel-rod-cells, in each quadrant section of a grid. The control rod pipes are disposed in a quadrant so that the locations of the pipe-cells assigned for the guide pipes in one quadrant are symmetrical with respect to a central rotational axis of the apparatus. The grid cells and the pull-in loader are both aligned with respect to a central rotational axis. To load the fuel rods into the fuel assembly, only the pull-in rods need to be operated for every 90 degree rotation of the loader about the central axis, because the locations of the pull-in rods correspond exactly with the grid cells assigned to hold fuel rods. This type of loader does not require complex switching devices required in the conventional pull-in rod type of loaders, and the assembling operation can be carried out efficiently and quickly.
摘要翻译： 本发明涉及一种用于将燃料棒从燃料棒料箱有效地方便地装载到燃料组件的拉入式装载机。 控制棒管和燃料棒在网格的每个象限部分中分别被称为管电池和燃料棒电池。 控制棒管设置在象限中，使得分配给一个象限中的引导管的管腔的位置相对于设备的中心旋转轴线对称。 网格单元和拉入装载机都相对于中心旋转轴线对准。 为了将燃料棒装载到燃料组件中，由于拉入杆的位置与分配给燃料棒的电网单元完全对应，所以只需要在装载机围绕中心轴的每90度旋转时操作拉入杆 拿着燃料棒。 这种装载机不需要传统的拉入式装载机所需的复杂开关装置，并且组装操作可以有效且快速地进行。
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公开(公告)号：US5297175A
公开(公告)日：1994-03-22
申请号：US964019
申请日：1992-10-21
申请人： Taichi Koiwai , Katsunori Ohuchi , Nobuo Miwa
发明人： Taichi Koiwai , Katsunori Ohuchi , Nobuo Miwa
摘要： The present invention is made to provide an assembling machine for nuclear fuel assembly, having a simple mechanical construction, in which the time required for inserting the fuel rod can be reduced.In the prior-art machine, the pull-in rod and its drive mechanism and the like are required to perform the operation for inserting the fuel rod into the supporting grid, thus, the mechanical construction must be complicated. Further, a relatively long time must be required to perform the operation for holding the fuel rod by the pull-in rod, which makes the whole working hours longer. In the machine according to the present invention, a drive mechanism is provided to drive a stopper, by which the regulation of the stopper for regulating the fall-down movement of the fuel rod can be released with ease. Thus, the fuel rod is fallen down by its own weight, so that the fuel rod can be inserted into the grid cell of the supporting grid which is supported by the supporting post. Therefore, the machine construction can be simplified, and it is not necessary to perform the prior-art operation for holding the fuel rod by the pull-in rod, so that the time required for performing the inserting operation of the fuel rod can be reduced.
摘要翻译： 本发明提供一种用于核燃料组件的组装机，其具有简单的机械结构，其中可以减少插入燃料棒所需的时间。 在现有技术的机器中，需要拉入杆及其驱动机构等来进行将燃料棒插入支撑格栅的操作，因此机械结构必须复杂。 此外，为了进行通过拉入杆保持燃料棒的操作，需要相当长的时间，这使得整个工作时间更长。 在根据本发明的机器中，设置有用于驱动止动件的驱动机构，由此可以容易地释放用于调节燃料棒的下降运动的止动件的调节。 因此，燃料棒由于其自身的重量而下降，使得燃料棒能够插入由支撑柱支撑的支撑格栅的格栅中。 因此，可以简化机器结构，并且不需要进行用于通过拉入杆保持燃料棒的现有技术操作，从而可以减少执行燃料棒的插入操作所需的时间 。
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公开(公告)号：US5319684A
公开(公告)日：1994-06-07
申请号：US972371
申请日：1992-11-05
申请人： Taichi Koiwai , Katsunori Ohuchi , Shuji Yamazaki
发明人： Taichi Koiwai , Katsunori Ohuchi , Shuji Yamazaki
CPC分类号： G21C3/334 , Y02E30/40 , Y10T29/53004
摘要： There are disclosed an assembling apparatus and an assembling method of a nuclear fuel assembly by which flaws or scratches to be formed on the surfaces of the fuel rods can be reduced. The fuel rods are inserted into the grid cells of the supporting grids under the state where the supporting grids are disposed in proximity to each other. Therefore, it is possible to remarkably reduce the fall-down movement of the tip portion of the fuel rod. Conventionally, the tip portion or lower surface of the fuel rod inevitably comes in contact with the grid cell of the supporting grid, so that the scratches might be formed on the surface of the fuel rod, which deteriorates the quality of the fuel assembly. However, according to the present method and apparatus, it is possible to avoid the interference between them so that the scratches to be formed on the surface of the fuel rods can be reduced remarkably.
摘要翻译： 公开了一种核燃料组件的组装装置和组装方法，能够减少在燃料棒的表面上形成的瑕疵或划痕。 在支撑格栅彼此靠近的状态下，将燃料棒插入支撑格栅的格栅中。 因此，能够显着地减少燃料棒的前端部的下降动作。 通常，燃料棒的前端部或下表面不可避免地与支撑栅格的格栅电池接触，从而可能在燃料棒的表面上形成划痕，这会降低燃料组件的质量。 然而，根据本方法和装置，可以避免它们之间的干涉，从而可以显着地降低在燃料棒表面上形成的划痕。
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