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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：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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公开(公告)号：US5263065A
公开(公告)日：1993-11-16
申请号：US996021
申请日：1992-12-23
申请人： Junichi Oyama , Taichi Koiwai , Shuji Yamazaki
发明人： Junichi Oyama , Taichi Koiwai , Shuji Yamazaki
摘要： The purpose of the present invention is to provide an apparatus which can insert a plurality of hooks into slits of a strap constructing a grid and to hold springs so that the spaces of grid cells are enlarged simultaneously. The enlargement enables insertion of fuel rods into the cells. The apparatus comprises a frame member adapted to attach to the strap along the longitudinal direction thereof, a pair of clamping members engaged the frame member and extending in the longitudinal direction of the strap. Each clamping member can move along the longitudinal direction of the strap. The clamping member has a plurality of projecting hooks arranged in the longitudinal direction of the strap in a spaced relation to one another. The end of the hooks of one of the clamping means are bent toward a longitudinal direction of the strap, while the hooks of another clamping means are bent toward another longitudinal direction of the strap.
摘要翻译： 本发明的目的是提供一种装置，其可以将多个钩子插入到构成网格的带的狭缝中并且保持弹簧，使得网格单元的空间同时扩大。 放大能够将燃料棒插入电池。 该装置包括适于沿着其纵向方向附接到带的框架构件，一对夹紧构件与框架构件接合并沿着带的纵向方向延伸。 每个夹紧构件可以沿着带的纵向方向移动。 夹紧构件具有沿着带的纵向布置的彼此间隔开的多个突出钩。 夹紧装置中的一个的钩的端部朝向带的纵向方向弯曲，而另一夹紧装置的钩向带的另一纵向方向弯曲。
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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：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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