公开(公告)号：US06807246B1

公开(公告)日：2004-10-19

申请号：US10328974

申请日：2002-12-24

申请人： Dae Ho Kim ,  Kee Nam Song ,  Tae Hyun Chun ,  Kyung Ho Yoon ,  Dong Seok Oh ,  Heung Seok Kang ,  Youn Ho Jung ,  Hyung Kyu Kim ,  Wang Kee In ,  Chang-Hwan Shin ,  Gyung Jin Park

发明人： Dae Ho Kim ,  Kee Nam Song ,  Tae Hyun Chun ,  Kyung Ho Yoon ,  Dong Seok Oh ,  Heung Seok Kang ,  Youn Ho Jung ,  Hyung Kyu Kim ,  Wang Kee In ,  Chang-Hwan Shin ,  Gyung Jin Park

IPC分类号： G21C334

CPC分类号： G21C3/352 ,  G21C3/3563 ,  G21Y2002/201 ,  G21Y2002/303 ,  G21Y2004/30 ,  Y02E30/40

摘要： A lips-type multi-purposed spacer grid for supporting fuel rods within a nuclear fuel assembly is disclosed. In the spacer grid, the fuel rods are in contact with dimples and water strider-type springs in an equiangular surface contact manner. The spacer grid distributes load, applied to the springs, to the entire structure of its inner strips, thus reducing peak stress at the contact surfaces between the fuel rods and the springs and diminishing vibration of the fuel rods, and thereby reducing possible fretting wear of the fuel rods due to hydraulic vibration of the fuel rods. The spacer grid also enlarges the allowable elastic range of the springs, and allows the springs to soundly support the fuel rods by using residual spring force. The spacer grid has mixing blades capable of minimizing pressure loss and flow interference, so that the fuel rod cooling efficiency of the nuclear fuel assembly is improved.

摘要翻译： 公开了一种用于在核燃料组件内支撑燃料棒的唇形多用间隔栅格。 在间隔网格中，燃料棒以等角面接触的方式接触凹坑和水刺式弹簧。 间隔栅格将施加到弹簧的负载分配到其内部条的整个结构，从而减少燃料棒和弹簧之间的接触表面处的峰值应力，并减少燃料棒的振动，从而减少可能的微动磨损 由于燃料棒的液压振动引起的燃料棒。 间隔网格也扩大了弹簧的允许弹性范围，并允许弹簧通过使用残余弹簧力来牢固地支撑燃料棒。 间隔栅格具有能够最小化压力损失和流动干扰的混合叶片，从而提高了核燃料组件的燃料棒冷却效率。

公开(公告)号：US06707872B2

公开(公告)日：2004-03-16

申请号：US10010526

申请日：2001-12-07

申请人： Kyung Ho Yoon ,  Heung Seok Kang ,  Hyung Kyu Kim ,  Kee Nam Song ,  Youn Ho Jung ,  Tae Hyun Chun ,  Dong Seok Oh ,  Wang Kee In ,  Gyung Jin Park

发明人： Kyung Ho Yoon ,  Heung Seok Kang ,  Hyung Kyu Kim ,  Kee Nam Song ,  Youn Ho Jung ,  Tae Hyun Chun ,  Dong Seok Oh ,  Wang Kee In ,  Gyung Jin Park

IPC分类号： G21C334

CPC分类号： G21C3/3563 ,  G21Y2002/303 ,  G21Y2004/301 ,  Y02E30/40

摘要： A spacer grid used for placing and supporting fuel rods in nuclear reactor fuel assemblies is disclosed. The spacer grid of this invention has a plurality of grid springs designed to have an optimal shape of their vertical support parts, thus reducing fretting wear of the fuel rods caused by contact of the fuel rods with the grid springs. The grid spring has a vertical support part and a fuel rod support part. The vertical support part includes upper and lower base parts extending downward and upward from the central portions of the top and bottom edges of an opening formed at the central portion of a unit strip, and two bridge parts branched from the upper base part and extending symmetrically downward until they are united at the lower base part. The fuel rod support part includes a conformal support part brought into surface contact with the external surface of a fuel rod. Two transverse connection parts extend outward from the opposite outside edges of the conformal support part while being specifically bent, and are integrated with the central portions of the inside edges of the two bridge parts into a single structure, thus connecting the fuel rod support part to the vertical support part.

摘要翻译： 公开了一种用于将燃料棒放置和支撑在核反应堆燃料组件中的间隔栅格。 本发明的间隔栅格具有多个格栅弹簧，其被设计成具有其垂直支撑部分的最佳形状，从而减少由燃料棒与格栅弹簧的接触引起的燃料棒的微动磨损。 栅格弹簧具有垂直支撑部分和燃料棒支撑部分。 垂直支撑部分包括从形成在单元条的中心部分的开口的顶部和底部边缘的中心部分向下和向上延伸的上部和下部基部，以及从上部基部分支并且对称延伸的两个桥接部分 向下，直到它们结合在下基部。 燃料棒支撑部分包括与燃料棒的外表面接触的共形支撑部分。 两个横向连接部分从保形支撑部分的相对的外边缘向外延伸，同时被特别弯曲，并且与两个桥接部分的内边缘的中心部分成一体，从而将燃料棒支撑部分连接到 垂直支撑部分。

公开(公告)号：US6167105A

公开(公告)日：2000-12-26

申请号：US208290

申请日：1998-12-08

申请人： Kyung Ho Yoon ,  Heung Seok Kang ,  Hyung Kyu Kim ,  Kee Nam Song ,  Youn Ho Jung ,  Tae Hyun Chun ,  Dong Seok Oh ,  Wang Kee In

发明人： Kyung Ho Yoon ,  Heung Seok Kang ,  Hyung Kyu Kim ,  Kee Nam Song ,  Youn Ho Jung ,  Tae Hyun Chun ,  Dong Seok Oh ,  Wang Kee In

IPC分类号： G21C3/352 ,  G21C3/356

CPC分类号： G21C3/352 ,  G21C3/3566 ,  G21Y2002/201 ,  G21Y2002/303 ,  G21Y2004/30 ,  Y02E30/40

摘要： A spacer grid with H-springs for use in a nuclear reactor fuel assembly is disclosed. In the spacer grid, two sets of intersectional grid strips are arranged in sets at an angle to each other prior to being encircled by a plurality of perimeter strips, thus forming a plurality of four-walled cells individually placing and supporting an elongated fuel rod therein. A plurality of regularly spaced openings are formed on each of the grid strips and perimeter strips at portions corresponding to the cells. An H-shaped spring is set in each of the openings and has a specifically curved rib capable of being brought into conformal surface contact with a fuel rod placed in each of the cells. The H-shaped spring thus elastically supports the fuel rod. Two positioning dimples are provided on each of the strips at positions above and below each of the openings. The two positioning dimples are so specifically curved as to come into conformal surface contact with a fuel rod, thus elastically supporting the fuel rod in cooperation with the H-shaped springs.

摘要翻译： 公开了一种用于核反应堆燃料组件的具有H-弹簧的间隔栅格。 在间隔网格中，两组交叉格栅条在被多个周边条带包围之前彼此成角度地排成一组，从而形成多个四壁细胞，其中单独地将细长的燃料棒放置并支撑在其中 。 在与电池相对应的部分处，在每个栅格条和周边条上形成多个规则间隔的开口。 H形弹簧设置在每个开口中，并且具有能够与放置在每个电池中的燃料棒保持一致的表面接触的特定曲线的肋。 因此，H形弹簧弹性地支撑燃料棒。 在每个开口上方和下方的位置的每个条上设置两个定位凹坑。 两个定位凹坑被特别地弯曲成与燃料棒保持一致的表面接触，从而与H形弹簧协同地弹性地支撑燃料棒。

公开(公告)号：US6130927A

公开(公告)日：2000-10-10

申请号：US207184

申请日：1998-12-08

申请人： Heung Seok Kang ,  Kee Nam Song ,  Kyung Ho Yoon ,  Youn Ho Jung ,  Tae Hyun Chun ,  Dong Seok Oh ,  Wang Kee In ,  Je Geon Bang

发明人： Heung Seok Kang ,  Kee Nam Song ,  Kyung Ho Yoon ,  Youn Ho Jung ,  Tae Hyun Chun ,  Dong Seok Oh ,  Wang Kee In ,  Je Geon Bang

IPC分类号： G21C3/34 ,  G21C3/322 ,  G21C3/352

CPC分类号： G21C3/322 ,  G21C3/352 ,  G21Y2002/101 ,  G21Y2002/201 ,  G21Y2002/304 ,  G21Y2004/30 ,  G21Y2004/302 ,  Y02E30/38

摘要： A grid with coolant deflecting channels for used in nuclear fuel assemblies is disclosed. In the grid, two sets of intersecting grid strips are arranged in sets at right angles to each other prior to being encircled by four perimeter strips, thus forming a plurality of four-walled cells individually placing and supporting an elongated fuel rod therein. Each of the grid strips is made up of two narrow sheets which are deformed at a plurality of regularly spaced portions to provide nozzle-type coolant deflecting channels. The channels individually have an upright Y-shaped or reversed Y-shaped configuration capable of so deflecting coolant as to mix low temperature coolant with high temperature coolant. The channels thus form a uniform temperature distribution within a fuel assembly. The channels are so inclined with respect to the axes of the fuel rods as to form wide and linear positioning springs at middle portions thereof. The middle portions of the channels thus individually have a dual function of a deflecting channel for coolant and a positioning spring for the fuel rods.

摘要翻译： 公开了一种具有用于核燃料组件的冷却剂偏转通道的电网。 在网格中，两组相交的格栅条在被四个周边条带包围之前彼此成直角地排成一组，从而形成多个四壁细胞，其中单独地将细长的燃料棒放置在其中。 每个格栅条由两个窄片组成，它们以多个规则间隔的部分变形，以提供喷嘴型冷却剂偏转通道。 通道各自具有直立的Y形或反向的Y形构造，其能够使冷却剂偏转以将低温冷却剂与高温冷却剂混合。 因此，通道在燃料组件内形成均匀的温度分布。 通道相对于燃料棒的轴线倾斜，以在其中间部分形成宽且线性的定位弹簧。 因此，通道的中部分别具有用于冷却剂的偏转通道和用于燃料棒的定位弹簧的双重功能。

公开(公告)号：US11654474B2

公开(公告)日：2023-05-23

申请号：US16401394

申请日：2019-05-02

申请人： Youn Ho Jung ,  Jae Woong Jung

发明人： Youn Ho Jung ,  Jae Woong Jung ,  Yoon Sang Shin

IPC分类号： B21F23/00 ,  B21F1/02

CPC分类号： B21F23/00 ,  B21F1/02

摘要： A wire feeding unit includes a driving motor; a driving roller which rotates by a driving force of the driving motor; a plurality of driven rollers arranged such that outer circumferential surfaces thereof are positioned on a same line; a belt which interlocks the driving roller and the plurality of driven rollers and is brought into contact with a wire, which is drawn into a side of the driven rollers, on a side of the plurality of driven rollers; and a plurality of idlers which support the wire on a side in which the wire and the belt are in contact with each other and assist feeding of the wire along a feeding direction of the belt in a free-rotation state.

公开(公告)号：US06325966B1

公开(公告)日：2001-12-04

申请号：US09293099

申请日：1999-04-16

申请人： Yong Hwan Jeong ,  Jong Hyuk Baek ,  Kyeong Ho Kim ,  Sun-Jae Kim ,  Byong Kwon Choi ,  Youn Ho Jung

发明人： Yong Hwan Jeong ,  Jong Hyuk Baek ,  Kyeong Ho Kim ,  Sun-Jae Kim ,  Byong Kwon Choi ,  Youn Ho Jung

IPC分类号： C22C1600

摘要： The invention presented herein relates to a zirconium alloy with superior corrosion resistance and high strength for use in fuel rod claddings, spacer grids and structural components in reactor core of light water and heavy water nuclear power plant. The zirconium alloy of this invention with superior corrosion resistance and high strength comprises an alloy composition as follows: niobium in a range of 0.15 to 0.25 wt. %; tin in a range of 1.10 to 1.40 wt. %; iron in a range of 0.35 to 0.45; chromium in a range of 0.15 to 0.25; one element selected from the group consisting of molybdenum, copper and manganese in a range of 0.08 to 0.12 wt. %; oxygen in a range of 0.10 to 0.14 wt. %; and the balance being zirconium.

摘要翻译： 本文提出的本发明涉及一种具有优良耐腐蚀性和高强度的锆合金，用于轻水和重水核电厂反应堆堆芯中的燃料棒包层，间隔栅格和结构部件。本发明的锆合金具有优异的腐蚀性 电阻和高强度包括如下的合金组成：铌在0.15至0.25wt。 ％; 锡在1.10至1.40重量％的范围内。 ％; 铁在0.35至0.45的范围内; 在0.15至0.25的范围内的铬; 一种元素选自钼，铜和锰，其含量范围为0.08至0.12wt。 ％; 0.10〜0.14重量％的氧。 ％; 余量为锆。

公开(公告)号：US06811746B2

公开(公告)日：2004-11-02

申请号：US10040743

申请日：2001-11-01

申请人： Yong Hwan Jeong ,  Jong Hyuk Baek ,  Byoung Kwon Choi ,  Myung Ho Lee ,  Sang Yoon Park ,  Cheol Nam ,  Youn Ho Jung

发明人： Yong Hwan Jeong ,  Jong Hyuk Baek ,  Byoung Kwon Choi ,  Myung Ho Lee ,  Sang Yoon Park ,  Cheol Nam ,  Youn Ho Jung

IPC分类号： C22C1600

CPC分类号： C22F1/186 ,  C22C16/00 ,  G21C3/07 ,  Y02E30/40

摘要： The present invention relates to a zirconium alloy having excellent corrosion resistance and mechanical properties and a method for preparing a nuclear fuel cladding tube by zirconium alloy. More particulary, the present invention is directed to a zirconium alloy comprising Zr-aNb-bSn-cFe-dCr-eCu (a=0.05-0.4 wt %, b=0.3-0.7 wt %, c=0.1-0.4 wt %, d=0-0.2 wt % and e=0.01-0.2 wt %, provided that Nb+Sn=0.35-1.0 wt %), and to a method for preparing a zirconium alloy nuclear fuel cladding tube, comprising melting a metal mixture comprising of the zirconium and alloying elements to obtain ingot, forging the ingot at &bgr; phase range, &bgr;-quenching the forged ingot at 1015-1075° C., hot-working the quenched ingot at 600-650° C., cold-working the hot-worked ingot in three to five passes, with intermediate vacuum annealing and final vacuum annealing the worked ingot at 460-540° C., which can be applied to the core components in a light water and a heavy water atomic reactor type nuclear power plant.

摘要翻译： 本发明涉及具有优异的耐腐蚀性和机械性能的锆合金以及通过锆合金制备核燃料包层管的方法。 更具体地，本发明涉及包含Zr-aNb-bSn-cFe-dCr-eCu（a = 0.05-0.4重量％，b = 0.3-0.7重量％，c = 0.1-0.4重量％，d = 0-0.2重量％，e = 0.01-0.2重量％，条件是Nb + Sn = 0.35-1.0重量％），以及制备锆合金核燃料包层管的方法，包括熔融金属混合物， 锆和合金元素以获得锭，在β相范围锻造锭，在1015-1075℃下对锻造锭进行β淬火，在600-650℃下热处理淬火锭，冷热处理， 在三到五道次的铸锭中进行中间真空退火和最终真空退火处理的锭在460-540℃，可以应用于轻水和重水原子反应堆型核电站的核心部件。

公开(公告)号：US07485246B2

公开(公告)日：2009-02-03

申请号：US11049452

申请日：2005-02-02

申请人： Young Woo Rhee ,  Keon Sik Kim ,  Jong Hun Kim ,  Ki Won Kang ,  Jae Ho Yang ,  Kun Woo Song ,  Youn Ho Jung

发明人： Young Woo Rhee ,  Keon Sik Kim ,  Jong Hun Kim ,  Ki Won Kang ,  Jae Ho Yang ,  Kun Woo Song ,  Youn Ho Jung

IPC分类号： G21C21/00

CPC分类号： G21C21/02 ,  C22B1/2413 ,  G21Y2002/104 ,  G21Y2002/303 ,  G21Y2004/40

摘要： A method for fabricating a sintered duplex nuclear fuel pellet includes the steps of: preparing a first powder composed of a material selected from the group consisting of UO2 and UO2—Er2O3, and a second powder composed of UO2—Gd2O3 and a sintering additive; producing a duplex compact consisting of an annular outer portion composed of the first powder and a cylindrical inner portion composed of the second powder; and sintering the duplex compact under a reducing gas atmosphere, wherein the sintering additive contains manganese of 0.001% to 2% by weight based on the total weight of the cylindrical inner portion.

摘要翻译： 一种烧结双相核燃料颗粒的制造方法包括以下步骤：制备由选自UO2和UO2-Er2O3的材料组成的第一粉末和由UO2-Gd2O3和烧结添加剂组成的第二粉末; 制造由第一粉末组成的环形外部部分和由第二粉末组成的圆筒形内部组成的双相压实体; 并在还原气体气氛下烧结所述双相压块，其中所述烧结添加剂含有基于所述圆筒形内部部分的总重量为0.001重量％至2重量％的锰。

公开(公告)号：US06881376B2

公开(公告)日：2005-04-19

申请号：US10677681

申请日：2003-10-02

申请人： Kun Woo Song ,  Jae Ho Yang ,  Keon Sik Kim ,  Ki Won Kang ,  Jong Hun Kim ,  Youn Ho Jung

发明人： Kun Woo Song ,  Jae Ho Yang ,  Keon Sik Kim ,  Ki Won Kang ,  Jong Hun Kim ,  Youn Ho Jung

IPC分类号： G21C3/62 ,  B22F3/00

CPC分类号： G21C3/623 ,  G21Y2002/104 ,  G21Y2004/10 ,  Y02E30/38

摘要： The present invention relates to a nuclear fuel body comprising tungsten network and a method for manufacturing the same, more particularly, a nuclear fuel body in which tungsten network is continuously formed over the entire or some parts of a sintered body and a method for manufacturing the same. The sintered body in the nuclear fuel body of the present invention contains tungsten network having excellent heat conductivity, leading to the enhancement of heat conductivity of the nuclear fuel sintered body itself with decreasing the temperature of the nuclear fuel, so that it can contribute to the improvement in safety and performance of nuclear fuel.

摘要翻译： 本发明涉及一种包括钨网络的核燃料体及其制造方法，更具体地说，涉及在烧结体的全部或部分上连续形成钨网的核燃料体， 相同。 本发明的核燃料体中的烧结体含有具有优异导热性的钨网络，导致核燃料烧结体本身的导热性随着核燃料温度的降低而提高，从而可以有助于 提高核燃料的安全和性能。

公开(公告)号：US5985211A

公开(公告)日：1999-11-16

申请号：US96660

申请日：1998-06-12

申请人： Yong Hwan Jeong ,  Jong Hyuk Baek ,  Byong Kwon Choi ,  Kyeong Ho Kim ,  Sun Jae Kim ,  Youn Ho Jung ,  Il Hiun Kuk

发明人： Yong Hwan Jeong ,  Jong Hyuk Baek ,  Byong Kwon Choi ,  Kyeong Ho Kim ,  Sun Jae Kim ,  Youn Ho Jung ,  Il Hiun Kuk

IPC分类号： C22C16/00

CPC分类号： C22C16/00

摘要： The present invention is directed to an advanced zirconium alloy having superior corrosion resistance and high strength suitable for fuel rod cladding, spacer grids and other structural components in a reactor core of nuclear power plants.

摘要翻译： 本发明涉及一种具有优异的耐腐蚀性和高强度的先进的锆合金，适用于核电站的反应堆核心中的燃料棒包层，间隔栅格和其他结构部件。