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公开(公告)号：US5546437A
公开(公告)日：1996-08-13
申请号：US371389
申请日：1995-01-11
Applicant: Bruce Matzner , Harold B. King , David G. Smith
Inventor： Bruce Matzner , Harold B. King , David G. Smith
CPC classification number: G21C3/352 , G21Y2002/302 , G21Y2004/305 , Y02E30/40
Abstract: 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.
Abstract translation: 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。
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公开(公告)号：US5488634A
公开(公告)日：1996-01-30
申请号：US194357
申请日：1994-02-10
Applicant: Eric B. Johansson , Robert B. Elkins , Bruce Matzner , Gerald M. Latter , Richard A. Proebstle
Inventor： Eric B. Johansson , Robert B. Elkins , Bruce Matzner , Gerald M. Latter , Richard A. Proebstle
CPC classification number: G21C3/3206 , G21Y2002/201 , G21Y2002/304 , G21Y2004/30 , Y02E30/40
Abstract: 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.
Abstract translation: 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。
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公开(公告)号：US5089221A
公开(公告)日：1992-02-18
申请号：US603046
申请日：1990-10-25
Applicant: Eric B. Johansson , Bruce Matzner , Gerald M. Latter
Inventor： Eric B. Johansson , Bruce Matzner , Gerald M. Latter
CPC classification number: G21C3/348 , G21C3/3424 , G21C3/344 , G21Y2002/201 , G21Y2002/302 , G21Y2002/303 , G21Y2002/304 , G21Y2004/30 , Y02E30/40
Abstract: 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.
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公开(公告)号：US5002724A
公开(公告)日：1991-03-26
申请号：US399107
申请日：1989-08-28
Applicant: Robert B. Elkins , Bruce Matzner , Michael V. Curulla
Inventor： Robert B. Elkins , Bruce Matzner , Michael V. Curulla
CPC classification number: G21C3/324 , G21Y2002/201 , G21Y2004/30 , Y02E30/40
Abstract: 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.
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公开(公告)号：US4749543A
公开(公告)日：1988-06-07
申请号：US29508
申请日：1987-03-24
Applicant: Russell L. Crowther , Eric B. Johansson , Bruce Matzner
Inventor： Russell L. Crowther , Eric B. Johansson , Bruce Matzner
CPC classification number: G21C3/322 , G21C3/324 , G21Y2002/201 , G21Y2004/30 , G21Y2004/305 , Y02E30/38
Abstract: 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.
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公开(公告)号：US4544522A
公开(公告)日：1985-10-01
申请号：US409946
申请日：1982-08-20
Applicant: Michael V. Curulla , John F. Price , Bruce Matzner , Kenneth W. Brayman , Frank D. Qurnell
Inventor： Michael V. Curulla , John F. Price , Bruce Matzner , Kenneth W. Brayman , Frank D. Qurnell
CPC classification number: G21C3/3566 , Y02E30/40
Abstract: 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.
Abstract translation: 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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公开(公告)号：US5787141A
公开(公告)日：1998-07-28
申请号：US859222
申请日：1997-05-19
Applicant: Bruce Matzner
Inventor： Bruce Matzner
IPC: G21C3/322
CPC classification number: G21C3/322 , G21Y2002/201 , G21Y2004/302 , Y02E30/38
Abstract: A lower tie plate includes a lower, generally cylindrically shaped nozzle for communicating coolant through a transition section of the tie plate to a grid at the upper end of the lower tie plate. The transition section is in the geometric form of a truncated, inverted pyramid, with flat side walls intersecting the cylindrical nozzle and the undersurface of the square grid. In this manner, minimum pressure loss is achieved by the flow from the nozzle to the grid. A shaped body diverter, i.e., an inverted pyramid, may depend from the grid to divert the flow laterally with minimum pressure loss into regions where the flow is most needed in the fuel bundle, i.e., in and about the fuel rods rather than the water rods. The inverted solid may have coolant flow passages through the solid to direct the flow into registering openings in the grid.
Abstract translation: 下连接板包括下部大致圆柱形的喷嘴，用于将冷却剂通过该连接板的过渡部分连通到下部连接板的上端处的格栅。 过渡部分是截头倒置金字塔的几何形状，平坦的侧壁与圆柱形喷嘴和方形网格的下表面相交。 以这种方式，通过从喷嘴到电网的流动来实现最小的压力损失。 成形体转向器，即倒置的金字塔，可以取决于网格，以最小的压力损失将流动横向转移到燃料束中最需要流动的区域，即在燃料棒中而不是水 杆 倒置的固体可以具有通过固体的冷却剂流动通道，以将流引导到格栅中的配准开口。
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8.发明授权Apparatus and methods for simulating a change in axial power shape during a nuclear fuel rod bundle transient 失效在核燃料棒束瞬变期间模拟轴向功率形状变化的装置和方法
公开(公告)号：US5553109A
公开(公告)日：1996-09-03
申请号：US328435
申请日：1994-10-25
Applicant: Bruce Matzner
Inventor： Bruce Matzner
CPC classification number: H05B3/44 , G21C17/001 , G21Y2002/204 , G21Y2002/304 , G21Y2004/30 , G21Y2004/403
Abstract: Apparatus is provided for simulating a nuclear fuel rod bundle transient condition and includes a vessel for containing a coolant, a pair of heating elements disposed in the vessel and a power supply for supplying power over time to each of the heating elements. The power supply is independently controlled whereby a variable supply of power over time to each heating element is provided, thus simulating the variation in power output and axial flux shape in a nuclear fuel bundle as a function of time.
Abstract translation: 提供了用于模拟核燃料棒束瞬态条件的装置，并且包括用于容纳冷却剂的容器，设置在容器中的一对加热元件和用于随时间向每个加热元件供电的电源。 电源被独立地控制，由此提供随着时间的变化的电力供应给每个加热元件，从而模拟作为时间的函数的核燃料束中的功率输出和轴向通量形状的变化。
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公开(公告)号：US5313506A
公开(公告)日：1994-05-17
申请号：US857153
申请日：1992-03-25
Applicant: Bruce Matzner , Eric B. Johansson
Inventor： Bruce Matzner , Eric B. Johansson
CPC classification number: G21C3/3566 , G21C3/344 , G21Y2002/201 , G21Y2002/302 , G21Y2004/302 , G21Y2004/305 , Y02E30/40
Abstract: An improved ferrule spacer for use with high density fuel rod arrays within boiling water reactor fuel bundles is disclosed. Ferrules are constructed in mating ferrule pairs. Each ferrule is divided into upper and lower ferrule halves. One ferrule half has sides thereof with the walls removed. The other ferrule half has its in place. The ferrule pairs are confronted with one ferrule inverted with respect to the other and with each complete ferrule wall of one ferrule half being juxtaposed to a ferrule half at a missing wall. Preferably, and at the point of tangency between the ferrule pairs, an aperture for receiving and confining an "H" type double loop spring is defined. The disclosure includes ferrules having a circular surround for the fuel rods and ferrules having an octagon sectioned surround for the fuel rods. Each member of the ferrule pair is symmetrical and completely interchangeable to provide for both convenient assembly and a small inventory of assembly parts.
Abstract translation: 公开了一种用于沸水反应堆燃料束内的高密度燃料棒阵列的改进的套圈间隔件。 套圈构造成配对套圈对。 每个套圈分为上，下套圈半部。 一个套圈一半具有除去壁的侧面。 另一个套圈一半已经在其中。 套圈对面对一个相对于另一个倒钩的套圈，并且一个套圈半部的每个完整的套圈壁与缺失的壁上的套圈半部并置。 优选地，并且在套圈对之间的相切点处，限定用于接收和限制“H”型双环弹簧的孔。 本公开包括具有用于燃料棒的圆形环绕的套圈和具有用于燃料棒的八边形环绕的套圈。 套圈对的每个构件是对称的并且是完全可互换的，以提供方便的组装和组装部件的小库存。
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10.发明授权Method and apparatus for reducing parasitic bypass flow in a boiling water reactor 失效用于减少沸水反应器中的寄生旁路流动的方法和装置
公开(公告)号：US5164150A
公开(公告)日：1992-11-17
申请号：US785835
申请日：1991-10-21
Applicant: Bruce Matzner
Inventor： Bruce Matzner
CPC classification number: G21C3/322 , G21C15/00 , G21C1/084 , G21Y2002/201 , G21Y2004/30 , G21Y2004/302 , Y02E30/31 , Y02E30/38
Abstract: A method and apparatus for improving the operating efficiency of a boiling water reactor is disclosed. Instead of coolant water being injected simultaneously at the bottom of the fuel rod assemblies and core bypass regions, the two flows then proceeding in parallel to the top of the reactor, the top of the bypass regions is sealed off and bypass coolant water is directed at the bottom of the sealing cover. This forces the bypass coolant water to flow down through the bypass regions. At the bottom of the bypass regions, provision is made to allow the bypass water to flow into the bottom of the fuel rod assemblies where it is entrained by the fuel rod coolant water flow. By converting flow through the core bypass region into a single series flow, increased operating efficiency is achieved.
