-
公开(公告)号：US5646973A
公开(公告)日：1997-07-08
申请号：US542254
申请日：1995-10-12
CPC分类号： G21C3/3315 , G21C3/33 , G21Y2002/301 , G21Y2004/305 , Y02E30/40
摘要： A fuel bundle assembly for a nuclear reactor includes a lower tie plate; a transition piece underlying the lower tie plate; a plurality of fuel rods and at least one water rod seated on the lower tie plate and extending in substantially parallel relationship toward an upper end of the fuel bundle assembly, wherein a fuel bundle assembly lifting load is carried by load bearing members including certain of the fuel rods or by the at least one water rod; a plurality of spacers axially spaced along the at least one water rod and including means for laterally supporting each of the fuel rods; and a handle bar assembly at the upper end of the fuel bundle assembly connected to the load bearing members such that the plurality of non-load bearing fuel rods are supported only by the lower tie plate and the plurality of spacers.
摘要翻译： 用于核反应堆的燃料束组件包括下连接板; 下连接板下方的过渡件; 多个燃料棒和至少一个水杆，所述至少一个水杆位于所述下连接板上，并且以基本上平行的关系延伸到所述燃料束组件的上端，其中燃料束组件提升负载由承载构件承载，所述承载构件包括： 燃料棒或至少一个水棒; 沿着所述至少一个水杆轴向间隔开的多个间隔件，并且包括横向支撑每个所述燃料棒的装置; 以及在所述燃料束组件的上端处连接到所述承载构件的手柄杆组件，使得所述多个非承载式燃料棒仅由所述下连接板和所述多个间隔件支撑。
-
公开(公告)号：US5610961A
公开(公告)日：1997-03-11
申请号：US567152
申请日：1995-12-05
CPC分类号： G21C3/14 , G21C3/324 , G21C3/334 , G21Y2002/302 , G21Y2004/301 , Y02E30/40
摘要： A fuel assembly for a nuclear reactor vessel includes a plurality of fuel rods, at least one coolant rod, a lower tie plate supporting the fuel rods and coolant rod, and a channel surrounding the fuel rods, coolant rod and tie plate. The lower tie plate is supported by the channel such that the channel carries a load of the fuel assembly. In one aspect of the invention, a conventional upper tie plate is removed and a handle assembly is provided that includes two spring loaded latch pins engageable with corresponding apertures in the channel. A transition member supports the lower tie plate and is rigidly secured to the channel. Thus, when lifting the fuel assembly from the reactor, the channel bears the load of the fuel assembly. If it is desired to remove the fuel bundle from the channel, the handle assembly is released from the assembly by releasing the latch pins. The bundle can then be removed from the channel by attaching a grapple head to the coolant rod ends, which are specially shaped to facilitate an attachment tool.
摘要翻译： 用于核反应堆容器的燃料组件包括多个燃料棒，至少一个冷却剂棒，支撑燃料棒和冷却剂棒的下部连接板以及围绕燃料棒，冷却剂棒和连接板的通道。 下连接板由通道支撑，使得通道承载燃料组件的负载。 在本发明的一个方面，移除了传统的上连接板，并且提供了一个手柄组件，其包括可与通道中的相应孔接合的两个弹簧加载的闩锁销。 过渡构件支撑下连接板并且刚性地固定到通道。 因此，当将燃料组件从反应器提升时，通道承受燃料组件的负载。 如果需要从通道中移除燃料束，则通过释放闩锁销将手柄组件从组件中释放。 然后可以通过将抓斗头附接到冷却剂杆端部而将束从通道移除，冷却剂杆端部被特别成形以便于附接工具。
-
公开(公告)号：US5608768A
公开(公告)日：1997-03-04
申请号：US373373
申请日：1995-01-17
CPC分类号： G21C3/3305 , G21C3/10 , G21Y2002/103 , G21Y2004/10 , G21Y2004/304 , Y02E30/40
摘要： In a fuel bundle assembly for a nuclear reactor wherein a plurality of fuel rods and tie rods extend between upper and lower tie plates and wherein some of the fuel rods are partial length fuel rods extending between the lower tie plate and a spacer located between the upper and lower tie plates, an improved end plug is provided for at least each of the partial length fuel rods, each end plug secured between a respective partial length fuel rod and the lower tie plate. The end plug includes an upper portion constructed of a first alloy material and including an exterior fuel rod receiving surface and a tapped hole in a lower end thereof, and a lower portion constructed of a second alloy material and including upper and lower threaded sections, the upper threaded section receivable within the tapped hole and the lower threaded section receivable within a tapped hole in the lower tie plate. The threaded end plug may be used with full length fuel rods as well as bundle tie rods. A related method of removing the fuel rod with the improved end plug from the lower tie plate is also disclosed.
摘要翻译： 在用于核反应堆的燃料束组件中，其中多个燃料棒和拉杆在上部和下部连接板之间延伸，并且其中一些燃料棒是部分长度的燃料棒，其在下部连接板和位于上部 和下连接板，为至少每个部分长度燃料棒提供改进的端塞，每个端塞固定在相应的部分长度燃料棒和下连接板之间。 端塞包括由第一合金材料构成的上部，并且在其下端包括外部燃料棒接收表面和螺纹孔，以及由第二合金材料构成并包括上部和下部螺纹部分的下部， 上螺纹部分可接收在螺纹孔内，下螺纹部分可接收在下连接板的螺纹孔内。 螺纹端塞可以与全长燃料棒以及束扎杆一起使用。 还公开了一种从下连接板移除具有改进的端塞的燃料棒的相关方法。
-
公开(公告)号：US5598450A
公开(公告)日：1997-01-28
申请号：US624032
申请日：1996-03-22
CPC分类号： G21C3/326 , G21C3/322 , G21Y2002/201 , G21Y2002/304 , G21Y2004/30 , G21Y2004/302 , G21Y2004/304 , Y02E30/38
摘要： In a fuel bundle for a boiling water nuclear reactor comprising a plurality of fuel rods (20) secured within an array and extending between upper and lower tie plates (24, 22), and including at least one additional partial length fuel rod (20') extending from said lower tie plate (22) but terminating short of said upper tie plate (24), an improvement in the form of a removable extension rod (32) secured to said at least one additional fuel rod (20') and extending substantially to said upper tie plate (24). The removable extension rod (32) also permits variance in the reactivity of the partial length fuel rod (20') particularly in the two phase region of the bundle (10).
摘要翻译： 在用于沸水核反应堆的燃料束中，包括固定在阵列内并在上下连接板（24,22）之间延伸的多个燃料棒（20），并且包括至少一个额外的部分长度燃料棒（20'）， ）从所述下连接板（22）延伸但是不超过所述上连接板（24），改进了固定到所述至少一个附加燃料棒（20'）并延伸的可移除延伸杆（32）的形式 基本上连接到所述上连接板（24）。 可拆卸的延伸杆（32）也允许部分长度燃料棒（20'）的反应性变化，特别是在束（10）的两相区域中。
-
5.发明授权
公开(公告)号：US5539794A
公开(公告)日：1996-07-23
申请号：US305504
申请日：1994-09-13
申请人： Alvin J. Jacobs , Gerald M. Gordon , Richard A. Proebstle , Mickey O. Marlowe , Ronald B. Adamson
发明人： Alvin J. Jacobs , Gerald M. Gordon , Richard A. Proebstle , Mickey O. Marlowe , Ronald B. Adamson
CPC分类号： C22C38/40 , G21C3/07 , G21Y2002/103 , G21Y2004/10 , Y02E30/40 , Y10S376/90
摘要： An improved stainless steel composition and an improved stainless Ni-based alloy are disclosed for use in nuclear reactor environments. The improved stainless alloys include a stainless steel and a stainless nickel based alloy that are particularly well adapted for use in reactor components that are positioned adjacent to components formed from a zirconium based metal. The improved stainless steel is an austenitic stainless steel material that include less than approximately 0.2 percent manganese by weight, but does include sufficient austenitic stabilizer to prevent a martensitic transformation during fabrication or use in a reactor environment. In one preferred embodiment, the stainless alloy is formed without any significant amount of manganese.
摘要翻译： 公开了改进的不锈钢组合物和改进的不锈镍基合金用于核反应堆环境。 改进的不锈钢合金包括不锈钢和不锈钢镍基合金，其特别适用于反应器部件，该反应器部件邻近由锆基金属形成的部件。 改进的不锈钢是奥氏体不锈钢材料，其包含小于约0.2重量％的锰，但确实包括足够的奥氏体稳定剂，以防止在反应器环境中制造或使用期间马氏体转变。 在一个优选实施例中，形成不含合金量的不含锰的量。
-
公开(公告)号：US5488634A
公开(公告)日：1996-01-30
申请号：US194357
申请日：1994-02-10
CPC分类号： G21C3/3206 , G21Y2002/201 , G21Y2002/304 , G21Y2004/30 , Y02E30/40
摘要： A unitary one-piece lower tie plate grid has a lower portion and an upper portion for supporting the fuel rods. The lower tie plate grid includes cylindrical boss portions extending upwardly from the lower grid portion and arranged in square matrices for receiving the lower end plugs of the fuel rods. Web portions extending upwardly from the lower tie plate portion interconnect the boss portions along the sides of the matrices. The lower grid portion includes a plurality of openings which open into the flow spaces defined by the convex portions of the bosses and the webs within each square matrix of the upper portion of the tie plate. Coolant flows through the openings into the flow spaces for further flow upwardly about the fuel rods. The openings are radiussed adjacent their lower ends and have divergent side walls downstream of a throat area to define a flow venturi.
摘要翻译： 一体的单件下连接板格架具有用于支撑燃料棒的下部和上部。 下连接板网格包括从下格栅部分向上延伸的圆柱形凸台部分，并且以方形矩阵布置以接收燃料棒的下端塞。 从下连接板部分向上延伸的网部分沿着矩阵的侧面互连凸起部分。 下格栅部分包括多个开口，这些开口通过凸起部分的凸部和连接板上部的每个正方形矩阵内的腹板限定的流动空间。 冷却剂流过开口进入流动空间，以进一步在燃料棒周围向上流动。 开口在其下端附近被辐射，并且在喉部区域下游具有发散的侧壁以限定流量文丘里管。
-
公开(公告)号：US5519745A
公开(公告)日：1996-05-21
申请号：US334380
申请日：1994-11-03
CPC分类号： G21C3/3206 , G21Y2002/201 , G21Y2002/304 , G21Y2004/30 , Y02E30/40
摘要： The lower tie plate grid includes cylindrical bosses and webs interconnecting the bosses for supporting nuclear fuel rods and defining flow openings through the grid. Coolant flows through the flow openings for flow upwardly about the fuel rods. The grid includes upper and lower portions and a screen is disposed between the upper and lower grid portions upon assembly with the bosses and webs of the respective upper and lower grid portions in registry with one another. The grid portions are welded to one another whereby the apertured screen serves to separate debris from the coolant flowing through the flow openings. The screen has openings in registry with the openings defined by the bosses for receiving the end plugs of the fuel rods.
摘要翻译： 下连接板网格包括圆柱形凸台和腹板，其互连凸台以支撑核燃料棒并且限定穿过网格的流动开口。 冷却剂流过流动开口，以便在燃料棒周围向上流动。 格栅包括上部和下部，并且在组装时，上部和下部格栅部分之间布置有筛网，其中相应的上部和下部格栅部分的凸台和腹板彼此对准。 栅格部分彼此焊接，由此多孔屏幕用于将碎屑与流过流动开口的冷却剂分开。 屏幕具有与由凸起限定的开口对准的开口，用于接收燃料棒的端塞。
-
公开(公告)号：US4997596A
公开(公告)日：1991-03-05
申请号：US408852
申请日：1989-09-18
CPC分类号： C04B35/51 , G21C3/623 , Y02E30/38 , Y10S376/901 , Y10S376/903
摘要： The disclosed invention consists of a ceramic form of fuel for a nuclear reactor comprising an oxide of a fissionable element and containing therein a consumable neutron absorbing agent. The ceramic fissionable fuel product provides longer fuel performance in nuclear reactor service.
-
公开(公告)号：US4238251A
公开(公告)日：1980-12-09
申请号：US852906
申请日：1977-11-18
申请人： Cedric D. Williams , Andrew W. Urquhart , James L. Walker , Richard A. Proebstle , Timothy J. Black
发明人： Cedric D. Williams , Andrew W. Urquhart , James L. Walker , Richard A. Proebstle , Timothy J. Black
CPC分类号： C22F1/186 , Y10S376/90
摘要： Zirconium-base alloy channels and fuel cladding tubes having unique resistance to accelerated pustular corrosion in the boiling water reactor environment are produced by a heat treatment causing segregation of intermetallic particulate precipitate phase in two dimensional arrays preferably located along grain boundaries and subgrain boundaries throughout the alloy body.
摘要翻译： 在沸水反应器环境中具有独特抵抗加速的脓疱性腐蚀的锆基合金通道和燃料包层管是通过热处理产生的，其导致二维阵列中的金属间化合物颗粒沉淀相分离，优选位于整个合金的晶界和亚晶界 身体。
-
-
-
-
-
-
-
-
搜索结果
9 条记录 (耗时 0.023 秒)
