[특허]Fuel bundle

[미국특허] Fuel bundle 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	G21C-003/32
출원번호	US-0020190 (1987-02-26)
발명자 / 주소	Lui Chun K. (Monroeville PA)
출원인 / 주소	Westinghouse Electric Corp. (Pittsburgh PA 02)
인용정보	피인용 횟수 : 9 인용 특허 : 20

초록 ▼

A fuel bundle in which the fuel rods are supported by top and bottom plates and held together by axially spaced straps. Several of the fuel rods are formed as tie rods. Each tie rod has a flat key at the bottom which is passed through a slot in the bottom plate. By turning the tie rod, the key is rotated to a locking position in which its axial movement is prevented. At the top, each tie rod has a flattened plug which is threaded on its rounded sides to receive a nut that has a crimping lip. The plug extends through a slot in the top plate and is threaded to the nut and the crimping lip is crimped to the plug. The tip of the plug is flat. During reconstitution of the fuel bundle, the crimp on each tie rod is broken and the nut is unscrewed while the tip of the plug is held. The top plate is then removed and each tie rod is then turned so that the key can be passed through the slot in the bottom plate. The tie rods may thus be removed and the bundle disassembled without access to the bottom plate. Each tie rod is provided with tabs to prevent axial displacement of the grids.

대표청구항 ▼

The method of forming a fuel bundle of a nuclear reactor, said fuel bundle being formed of a top plate, a bottom plate, a plurality of fuel rods, and at last one tie rod, said tie rod having a key near its lower end and at its upper end being of non-circular transverse cross-section, said top plate having a non-circular opening to engage said upper end, said opening in said top plate having an inner peripheral surface which matches the outer surface of said upper end, said upper end being a slip fit in said opening in said top plate, and said upper end having a length so that it is capable of penetrating said opening and extending at least in part above said top plate, and said bottom plate having a receptacle for said key; the said method including: positioning said fuel rods in said bottom plate, positioning said tie rod in said bottom plate with said key passed through said receptacle to the underside of said bottom plate, after said tie rod is so positioned turning said tie rod so that the key is in engagement with the underside of said bottom plate, thereafter mounting said top plate in engagement with said fuel rods with the upper end of said tie rod extending through said opening in said top plate and extending above said top plate, and next securing said tie rod to the upper side of said top plate thus simultaneously securing said key to the underside of said bottom plate.

이 특허에 인용된 특허 (20) 인용/피인용 타임라인 분석

Pilgrim ; Jr. Lawrence G. (Greensburg PA) Jackson Leigh F. (Greensburg PA), Apparatus and method for preventing the rotation of rods used in nuclear fuel assemblies.
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Anthony Andrew J. (Tariffville CT), Arrangement for retaining a fuel rod in a reconstitutable fuel assembly.
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Long John W. (Richland WA) Flora Barney S. (Richland WA), Assembly mechanism for nuclear fuel bundles.
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Long John W. (Richland WA) Flora Barney S. (Richland WA) Ford Kenneth L. (Richland WA), Assembly mechanism for nuclear fuel bundles.
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Feutrel Claude (Vauhallan FRX), Device for fixing a guide tube.
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Jabsen Felix S. (Lynchburg VA), Fuel assembly guide tube.
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van Santen Aart (Vasteras SW), Fuel assembly with easily detachable components.
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Hylton Charles L. (Madison Heights VA), Fuel rod retention device for a nuclear reactor.
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Feutrel Claude (Vauhallan FRX), Grids for bringing about the spacing of a group of sheathed fuel rods in a nuclear reactor.
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Pugh Ralph A. (Richland WA), Locking means for fuel bundles.
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Tokunaga Kazuyoshi (Katsuta JPX) Anzai Masayasu (Hitachi JPX), Method for transferring toner images in electrophotography.
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Matzner Bruce (San Jose CA) Horn Victor M. (San Jose CA) Curulla Michael V. (San Jose CA) Price John F. (Wilmington NC), Nuclear fuel assembly spacer.
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Jabsen Felix S. (Lynchburg VA), Nuclear fuel element end fitting.
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Walton Lewis Anthony (Lynchburg VA), Nuclear fuel element nut retainer cup.
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Leclercq Joseph (Le Vesinet FRX), Nuclear reactor fuel assemblies.
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Steinke Alexander (Ebermannstadt DEX), Nuclear reactor fuel assembly.
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Christiansen David W. (Kennewick WA) Smith Bob G. (Kennewick WA), Nuclear reactor fuel assembly duct-tube-to-inlet-nozzle attachment system.
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Osborne Jon L. (Richland WA) Flora Barney S. (Benton City WA), PWR Integral tie plate and locking mechanism.
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Long John W. (Richland WA) Flora Barney S. (Richland WA), Spacer capture system for nuclear fuel assemblies.
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Wilson John F. (Murrysville Boro PA) Gjertsen Robert K. (Monroeville PA) Ferrari Harry M. (Pittsburgh PA), Top nozzle mounted reusable fastener device in a reconstitutable nuclear fuel assembly.
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이 특허를 인용한 특허 (9) 인용/피인용 타임라인 분석

Gustafsson Tommy,SEX ; Wallander Anders,SEX, Device and method for locking rods in a bottom tie plate of a fuel assembly.
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Meier Werner,DEX ; Rau Peter,DEX, Nuclear reactor fuel assembly.
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Matzner Bruce, Optimized steam vent locations for a nuclear fuel bundle.
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Croteau Edward A. (Wilmington NC) Evans Thomas G. (Wilmington NC) Elkins Robert B. (Wilmington NC), Reduced height flat spring spacer for nuclear fuel rods.
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Croteau Edward A. (Wilmington NC) Muncy Donald G. (Wilmington NC) Johansson Eric B. (Wrightsville Beach NC), Reduced height spacer for nuclear fuel rods.
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Russell, II, William Earl; James, Robert Bryant, Segmented waste rods for handling nuclear waste and methods of using and fabricating the same.
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Labarriere, Eric; Beati, Angelo; Bonnamour, Michel, Terminal end-piece for a fuel assembly having a nose for orienting the flow of coolant fluid and corresponding assembly.
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DeFilippis, Michael S., Tiered tie plates and fuel bundles using the same.
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Defilippis, Michael S., Tiered tie plates and fuel bundles using the same.
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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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[미국특허] Fuel bundle 원문보기