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1. 发明授权

US4357298A Nuclear fuel assembly space arrangement 失效
标题翻译：核燃料组装空间布置
公开(公告)号：US4357298A
公开(公告)日：1982-11-02
申请号：US195877
申请日：1980-10-10
申请人： Richard A. Wolters, Jr. , Tommy C. Lee , Bruce Matzner
发明人： Richard A. Wolters, Jr. , Tommy C. Lee , Bruce Matzner
IPC分类号： G21C3/34 , G21C3/356 , G21C3/18
CPC分类号： G21C3/3566 , Y02E30/40
摘要： Advantage is taken of the non-uniform axial neutron flux density distribution in a nuclear reactor core by using fuel rod spacers of low neutron absorption in high neutron flux density regions and fuel rod spacers of low coolant flow resistance in the lower neutron flux density regions of the core, this spacer combination also providing higher fuel bundle thermal limits.
摘要翻译：通过在高中子通量密度区域中使用低中子吸收的燃料棒间隔物和较低的中子通量密度区域中的低冷却剂流动阻力的燃料棒间隔物，在核反应堆堆芯中采用非均匀轴向中子通量密度分布的优点核心，这种间隔组合也提供更高的燃料束热限制。

2. 发明授权

US5384814A Lower tie plate strainers for boiling water reactors 失效
标题翻译：用于沸水反应堆的下连接板过滤器
公开(公告)号：US5384814A
公开(公告)日：1995-01-24
申请号：US44687
申请日：1993-04-12
申请人： Bruce Matzner , Eric B. Johansson , Richard A. Wolters, Jr. , Thomas G. Dunlap , Robert B. Elkins , Harold B. King , Paul W. Sick
发明人： Bruce Matzner , Eric B. Johansson , Richard A. Wolters, Jr. , Thomas G. Dunlap , Robert B. Elkins , Harold B. King , Paul W. Sick
IPC分类号： G21C3/33 , G21C1/08 , G21C3/30 , G21C3/32 , G21C1/04
CPC分类号： G21C3/3206 , G21C1/086 , G21Y2002/104 , G21Y2002/201 , G21Y2004/30 , G21Y2004/302 , G21Y2004/303 , Y02E30/40
摘要： In a boiling water reactor fuel bundle, a three dimensional debris catching grid construction is placed within the flow volume defined by the lower tie plate assembly between the inlet nozzle and upper fuel rod supporting grid. A perforated plate is utilized having round holes as small consistent with the prevention of inadvertent closure due crudding and a hole pitch consistent with mechanical integrity requirements. The perforated plate is placed in a three dimensional construction such as a dome, cylinder, pyramid, inverted pyramid or corrugated construction spanning the flow volume of the lower tie plate assembly. As a consequence of this three dimensional grid construction, the total flow through area of the perforations in the metal plate does not introduce appreciable pressure drop in the lower tie plate assembly between the inlet nozzle and the rod supporting grid. Fluid movement at the debris restraining holes of the grid construction has a low flow velocity and a change in flow direction before passing through the holes to discourage debris from finding its way through the grid holes. Finally, it is possible to incorporate debris traps within the flow volume of the lower tie plate assembly that can cause trapping and subsequent removal of trapped debris upon fuel bundle replacement.
摘要翻译：在沸水反应堆燃料束中，三维碎屑捕获栅格结构放置在由入口喷嘴和上燃料棒支撑栅之间的下连接板组件限定的流动体积内。使用多孔板，其圆形孔小，防止由于粗糙度而导致的无意闭合，以及与机械完整性要求一致的孔间距。多孔板被放置在三维结构中，例如圆顶，圆柱体，金字塔，倒金字塔或波纹结构，跨越下拉板组件的流动体积。作为这种三维格栅结构的结果，金属板中的穿孔面积的总流量不会在入口喷嘴和支撑杆之间的下连接板组件中引入明显的压降。格栅结构的碎屑限制孔处的流体运动在通过孔之前具有低流速和流动方向的变化，以阻止碎屑通过栅格孔。最后，可以将碎屑收集器结合在下连接板组件的流动体积内，这可以导致在燃料束更换时捕获和随后的捕获的碎屑的去除。

3. 发明授权

US5483564A Lower tie plate strainers including double corrugated strainers for boiling water reactors 失效
标题翻译：下层连接板过滤器，包括用于沸水反应堆的双波纹过滤器
公开(公告)号：US5483564A
公开(公告)日：1996-01-09
申请号：US196738
申请日：1994-02-15
申请人： Bruce Matzner , Eric B. Johansson , Richard A. Wolters, Jr. , Thomas G. Dunlap , Robert B. Elkins , Harold B. King , Paul W. Sick , Kevin L. Ledford
发明人： Bruce Matzner , Eric B. Johansson , Richard A. Wolters, Jr. , Thomas G. Dunlap , Robert B. Elkins , Harold B. King , Paul W. Sick , Kevin L. Ledford
IPC分类号： G21C3/33 , G21C1/08 , G21C3/30 , G21C3/32 , G21C1/04
CPC分类号： G21C3/3206 , G21C1/086 , G21Y2002/104 , G21Y2002/201 , G21Y2004/30 , G21Y2004/302 , G21Y2004/303 , Y02E30/40
摘要： In a boiling water reactor fuel bundle, a three dimensional debris catching grid construction is placed within the flow volume defined by the lower tie plate assembly between the inlet nozzle and upper fuel rod supporting grid. A perforated plate is utilized having round holes as small consistent with the prevention of inadvertent closure due crudding and a hole pitch consistent with mechanical integrity requirements. The perforated plate is placed in a three dimensional construction such as a dome, cylinder, pyramid, inverted pyramid or corrugated construction spanning the flow volume of the lower tie plate assembly. As a consequence of this three dimensional grid construction, the total flow through area of the perforations in the metal plate does not introduce appreciable pressure drop in the lower tie plate assembly between the inlet nozzle and the rod supporting grid. Fluid movement at the debris restraining holes of the grid construction has a low flow velocity and a change in flow direction before passing through the holes to discourage debris from finding its way through the grid holes. Finally, it is possible to incorporate debris traps within the flow volume of the lower tie plate assembly that can cause trapping and subsequent removal of trapped debris upon fuel bundle replacement. A double corrugated plate having large holes in the lower plate and smaller holes in the upper plate is utilized to trap debris.
摘要翻译：在沸水反应堆燃料束中，三维碎屑捕获栅格结构放置在由入口喷嘴和上燃料棒支撑栅之间的下连接板组件限定的流动体积内。使用多孔板，其圆形孔小，防止由于粗糙度而导致的无意闭合，以及与机械完整性要求一致的孔间距。多孔板被放置在三维结构中，例如圆顶，圆柱体，金字塔，倒金字塔或波纹结构，跨越下拉板组件的流动体积。作为这种三维格栅结构的结果，金属板中的穿孔面积的总流量不会在入口喷嘴和支撑杆之间的下连接板组件中引入明显的压降。格栅结构的碎屑限制孔处的流体运动在通过孔之前具有低流速和流动方向的变化，以阻止碎屑通过栅格孔。最后，可以将碎屑收集器结合在下连接板组件的流动体积内，这可以导致在燃料束更换时捕获和随后的捕获的碎屑的去除。在下板中具有大孔的双层波纹板和上板中的较小孔用于捕集碎屑。

4. 发明授权

US5229068A Optimized critical power in a fuel bundle with part length rods 无效
标题翻译：在具有部分长杆的燃料束中优化临界功率
公开(公告)号：US5229068A
公开(公告)日：1993-07-20
申请号：US914389
申请日：1992-07-15
申请人： Eric B. Johansson , Bruce Matzner , Gary E. Dix , Richard A. Wolters, Jr. , Anthony P. Reese
发明人： Eric B. Johansson , Bruce Matzner , Gary E. Dix , Richard A. Wolters, Jr. , Anthony P. Reese
IPC分类号： G21C3/322 , G21C15/16
CPC分类号： G21C3/322 , G21C15/16 , G21Y2002/201 , G21Y2004/30 , G21Y2004/302 , Y02E30/38
摘要： In a fuel bundle for use in the core of a boiling water nuclear reactor, part length rods having a tendency to reduce pressure drop are used in combination with spacers and spacer attached devices tending to restore pressure drop to improve critical power. The addition of the part length rods has the advantage of lowering the pressure drop. Attached devices substantially recapture the pressure drop. Exemplary spacer attached mechanisms for the recapture of pressure drop are set forth including vanes--preferably swirl vanes on the spacers, decreasing the spacer pitch to increase the total number of spacers in the upper two phase region of the fuel bundle, increasing the vertical height of the spacers, and increasing the thickness of the metal from which the spacers are constructed. Two classes of separation devices are disclosed for placement in the volume overlying the end of the partial length fuel rods. A first type of device fits to the end of the part length rods and is primarily intended for preventing water passing along the surface of the part length rod adjacent the end of the part length rod from entering the volume overlying the part length fuel rod. A second type of device resides in the volume overlying the part length rod. In either case, critical power is improved.
摘要翻译：在用于沸水核反应堆核心的燃料束中，与间隔物和间隔物连接的装置结合使用倾向于恢复压力降低以提高临界功率的部分长度的棒。部分长度杆的添加具有降低压降的优点。连接的装置基本上重新吸收压降。示出了用于重新获得压降的示例性间隔件附接机构，其包括叶片 - 优选间隔件上的旋转叶片，减小间隔物间距以增加燃料束的上两相区域中的间隔物的总数，增加垂直高度间隔物，并且增加构成间隔物的金属的厚度。公开了两类分离装置用于放置在覆盖部分长度燃料棒的端部的体积中。第一类型的装置适合于部件长度杆的端部，并且主要用于防止沿邻近零件长度杆的端部的部分长度杆的表面的水进入超过部件长度燃料棒的体积。第二种类型的设备驻留在覆盖部件长度杆的体积中。在任一情况下，临界功率都得到改善。

5. 发明授权

US5546437A Spacer for nuclear fuel rods 失效
标题翻译：核燃料棒的间隔物
公开(公告)号：US5546437A
公开(公告)日：1996-08-13
申请号：US371389
申请日：1995-01-11
申请人： Bruce Matzner , Harold B. King , David G. Smith
发明人： Bruce Matzner , Harold B. King , David G. Smith
IPC分类号： G21C3/34 , G21C3/352
CPC分类号： G21C3/352 , G21Y2002/302 , G21Y2004/305 , Y02E30/40
摘要： A spacer for retaining nuclear fuel rods in laterally spaced relation to one another includes first and second sets of spacer strips extending in mutually perpendicular diagonal directions relative to a generally rectilinear peripheral spacer band. The strips have linearly extending sections with adjacent sections angularly related to one another and meeting at apices. The sections of each strip alternately intersect a diagonal line across the spacer with the apices alternately located on opposite sides of the diagonal line. Alternate apices have springs projecting to one side of the strip for engaging fuel rods and apices between the alternate apices have stops projecting on opposite sides of the strip for engaging the fuel rods. Slots are provided in the strips enabling intermeshing of the strips with one another to define discrete cells peripherally encompassing and retaining fuel rods within the spacer. In another form, the spacer includes pairs of strips having alternating reversely curved sections with alternate springs and stops and assembled to form rows of cells. The strips are intermeshed in egg-crate fashion and welded at their junctures.
摘要翻译：用于将核燃料棒保持为彼此横向间隔开的间隔件包括相对于大致直线的外围间隔带在相互垂直的对角线方向上延伸的第一组和第二组间隔条。条带具有线性延伸部分，相邻部分彼此成角度相关并且在顶点处会合。每个条带的部分交替地与穿过间隔物的对角线相交，顶点交替地位于对角线的相对侧上。替代顶点具有突出到条的一侧的弹簧，用于接合燃料棒，并且在替代顶点之间的顶点具有在条的相对侧上突出的止挡件，用于接合燃料棒。狭槽设置在带状物之间，使得条带彼此相互啮合以限定在隔离物周围包围和保持燃料棒的分立的细胞。在另一种形式中，间隔物包括成对的条带，具有交替的反向弯曲部分，具有交替弹簧并停止并组装以形成行细胞。条带以蛋包装方式相互啮合，并在其交点处焊接。

6. 发明授权

US5488634A Lower tie plate debris catcher for a nuclear reactor 失效
标题翻译：用于核反应堆的较低的夹板碎片捕获器
公开(公告)号：US5488634A
公开(公告)日：1996-01-30
申请号：US194357
申请日：1994-02-10
申请人： Eric B. Johansson , Robert B. Elkins , Bruce Matzner , Gerald M. Latter , Richard A. Proebstle
发明人： Eric B. Johansson , Robert B. Elkins , Bruce Matzner , Gerald M. Latter , Richard A. Proebstle
IPC分类号： G21C3/33 , G21C3/30 , G21C3/32 , G21C3/322 , G21C19/42
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。

7. 发明授权

US5089221A Composite spacer with Inconel grid and Zircaloy band 失效
公开(公告)号：US5089221A
公开(公告)日：1992-02-18
申请号：US603046
申请日：1990-10-25
申请人： Eric B. Johansson , Bruce Matzner , Gerald M. Latter
发明人： Eric B. Johansson , Bruce Matzner , Gerald M. Latter
IPC分类号： G21C3/34 , G21C3/344 , G21C3/348
CPC分类号： G21C3/348 , G21C3/3424 , G21C3/344 , G21Y2002/201 , G21Y2002/302 , G21Y2002/303 , G21Y2002/304 , G21Y2004/30 , Y02E30/40
摘要： An improved spacer is disclosed which contains an Inconel grid and a Zircaloy surrounding band. The Inconel grid can be fabricated from the extremely thin and highly elastic spring metal utilizing a modification of a prior art cell construction that includes paired inwardly bent vertical spring legs with cantilevered and rod encircling upper and lower arm pairs. The spring legs extend at spaced apart locations between the upper and lower arm pairs and have a medial spring rod contacting portion for biasing the rods into stops on the rod encircling arm pairs. The springs at the upper and lower ends are provided with spring dimple stops to prevent over stressing of the spring during assembly or handling of the fuel bundle into which the spacer is incorporated. The rod encircling arm pairs have an offset from center where the two arms meet at their distal ends to complete encirclement of the rods. This offset from center enables the cells to be fastened in cell pairs at their respective embracing arms. The cell pairs can in turn be manipulated as a unit to define the necessary types of spacer grids required for any particular grid construction. A preferred grid construction for a ten by ten fuel rod matrix is disclosed including a grid filling all rod lattice positions for the bottom of a fuel bundle, a grid enabling the placement of a water rod of varying diameter, and finally a grid defining missing lattice positions for overlying partial length rods and permitting upward venting of steam with minimum pressure drop. An all Zircaloy band is disclosed for surrounding containment of the Inconel grid. The band consists of two or four segments. Apertures are provided in the band at the corners, and portions of the corner Inconel cells project into these apertures, keying the Inconel grid to the Zircaloy band. The band is welded into continuous encircling relation. There results a spacer with an Inconel grid and surrounding Zircaloy band having minimum pressure drop and minimum neutron absorption useful with a high density fuel rod matrix required in modern fuel bundle design.

8. 发明授权

US5002724A Upper tie plate for boiling water nuclear reactor 失效
标题翻译：沸水核反应堆上层板
公开(公告)号：US5002724A
公开(公告)日：1991-03-26
申请号：US399107
申请日：1989-08-28
申请人： Robert B. Elkins , Bruce Matzner , Michael V. Curulla
发明人： Robert B. Elkins , Bruce Matzner , Michael V. Curulla
IPC分类号： G21C3/33 , G21C3/324
CPC分类号： G21C3/324 , G21Y2002/201 , G21Y2004/30 , Y02E30/40
摘要： An improved upper tie plate is disclosed in a fuel bundle for a boiling water nuclear reactor. The tie plate resides in a fuel bundle including an upper tie plate, a lower tie plate, a matrix of sealed fuel rods supported therebetween, and a surrounding channel. Both the lower tie plate and the improved upper tie plate have two functions; they support the fuel rods in vertical upstanding relation between the tie plates and interior of the channel and permit the passage of moderating coolant through the channel from the bottom of the channel to the top of the channel. This moderating coolant enters through the lower tie plate in the liquid form, passes into the matrix of upstanding fuel rods where steam is generated and exits outwardly through the improved upper tie plate as a water steam mixture at the top of the fuel bundle. The improvement includes the support of the channel directly from the fuel bundle lifting bail for transmission of load directly to the bail instead of a cantilevered support through the tie plate. This direct support enables cutting away a portion of the matrix overlying the fuel rods for reduction of pressure drop in the escaping steam/water phase from the fuel bundle. Additionally, this alignment enables raising of the points of tie plate support for longer fuel rod length. Improved fuel bundle performance results.

9. 发明授权

US4749543A Axially shaped channel and integral flow trippers 失效
标题翻译：轴向通道和积分流量跳闸
公开(公告)号：US4749543A
公开(公告)日：1988-06-07
申请号：US29508
申请日：1987-03-24
申请人： Russell L. Crowther , Eric B. Johansson , Bruce Matzner
发明人： Russell L. Crowther , Eric B. Johansson , Bruce Matzner
IPC分类号： G21C3/322 , G21C3/324 , G21C3/34
CPC分类号： G21C3/322 , G21C3/324 , G21Y2002/201 , G21Y2004/30 , G21Y2004/305 , Y02E30/38
摘要： An improved channel is disclosed which has a reduced average thickness in its upper portion. The lesser average thickness corresponds to a lower pressure difference acting on the channel sides, over the upper portion of the channel. The reduction in average thickness is accomplished by cutting flow trippers into the inner surface of the channel walls and/or cutting grooves into the outer surface of the channel. The axial variation of channel average thickness increases water volume adjacent to the upper part of the channel to provide increased neutron moderation, to minimize the steam void reactivity coefficient, and to provide a greater cold shutdown margin. The material removed to produce the flow trippers increases the cross-sectional area inside the channel and reduces pressure drop in the upper portion of the channel. The flow trippers divert water flowing on the channel walls to the fuel rods adjacent to the channel walls, permitting higher reactor power operation. The flow trippers also permit operation at lower flow rates.

10. 发明授权

US4544522A Nuclear fuel assembly spacer 失效
标题翻译：核燃料组件垫片
公开(公告)号：US4544522A
公开(公告)日：1985-10-01
申请号：US409946
申请日：1982-08-20
申请人： Michael V. Curulla , John F. Price , Bruce Matzner , Kenneth W. Brayman , Frank D. Qurnell
发明人： Michael V. Curulla , John F. Price , Bruce Matzner , Kenneth W. Brayman , Frank D. Qurnell
IPC分类号： G21C3/34 , G21C3/356
CPC分类号： G21C3/3566 , Y02E30/40
摘要： A spacer for use in a fuel assembly of a nuclear reactor having thin, full-height divider members, slender spring members and laterally oriented rigid stops and wherein the total amount of spacer material, the amount of high neutron cross section material, the projected area of the spacer structure and changes in cross section area of the spacer structure are minimized whereby neutron absorption by the spacer and coolant flow resistance through the spacer are minimized.
摘要翻译：用于具有薄的全高分隔构件，细长弹簧构件和横向定向的刚性挡块的核反应堆的燃料组件中的间隔件，其中间隔材料的总量，高中子截面材料的量，投影面积并且间隔件结构的横截面面积的变化被最小化，使得间隔件的中子吸收和通过间隔件的冷却剂流动阻力最小化。

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