CN109844870B - 反应堆燃料组件 - Google Patents

反应堆燃料组件 Download PDF

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Publication number
CN109844870B
CN109844870B CN201880001940.9A CN201880001940A CN109844870B CN 109844870 B CN109844870 B CN 109844870B CN 201880001940 A CN201880001940 A CN 201880001940A CN 109844870 B CN109844870 B CN 109844870B
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fuel assembly
grids
fuel
tail end
lattice
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CN109844870A (zh
Inventor
R·S·伊万诺夫
I·N·瓦西连科
V·V·维亚利琴
S·A·库什曼诺夫
R·I·瓦西连科
D·L·波利亚科夫
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Tvel JSC
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    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21C—NUCLEAR REACTORS
    • G21C3/00—Reactor fuel elements and their assemblies; Selection of substances for use as reactor fuel elements
    • G21C3/30—Assemblies of a number of fuel elements in the form of a rigid unit
    • G21C3/32—Bundles of parallel pin-, rod-, or tube-shaped fuel elements
    • G21C3/33—Supporting or hanging of elements in the bundle; Means forming part of the bundle for inserting it into, or removing it from, the core; Means for coupling adjacent bundles
    • G21C3/3305—Lower nozzle
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21C—NUCLEAR REACTORS
    • G21C3/00—Reactor fuel elements and their assemblies; Selection of substances for use as reactor fuel elements
    • G21C3/30—Assemblies of a number of fuel elements in the form of a rigid unit
    • G21C3/32—Bundles of parallel pin-, rod-, or tube-shaped fuel elements
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21C—NUCLEAR REACTORS
    • G21C3/00—Reactor fuel elements and their assemblies; Selection of substances for use as reactor fuel elements
    • G21C3/30—Assemblies of a number of fuel elements in the form of a rigid unit
    • G21C3/32—Bundles of parallel pin-, rod-, or tube-shaped fuel elements
    • G21C3/334—Assembling, maintenance or repair of the bundles
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E30/00—Energy generation of nuclear origin
    • Y02E30/30—Nuclear fission reactors

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Structure Of Emergency Protection For Nuclear Reactors (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Liquid Carbonaceous Fuels (AREA)
  • Baking, Grill, Roasting (AREA)

Abstract

本发明属于核动力，即压水堆燃料组件。所申请的发明要解决的一个技术任务是燃料组件可靠性的提高及其制造成本降低。本发明所达到的技术效果：燃料组件的下格架刚接着尾端肋片的结构设计。这样一来，该结构允许减小下格架的厚度，降低燃料组件的未加热下部区域中的水力阻力。技术效果达到途径：包括燃料元件束、定位格架、管式道、下格架和尾端的燃料组件中，根据发明证书，下格架配有销钉，而尾端肋片带有套管。中央销与套管牢牢地连接着。

Description

反应堆燃料组件
技术领域
本发明属于核动力，即压水堆燃料组件。
背景技术
目前有一个由装在定位格架上的燃料元件束组成的压水堆燃料组件-1000(ВВЭР-1000)。定位格架被固定到骨架的管式道上，管式道则设在带有尾端的下格架中(2079170,МПКG21C3/32(2016/01)俄罗斯发明特许证)-作为首版。
该首版的主要缺点是下格架与燃料组件的尾端仅有周边的刚性连接，而其底部由尾端肋片支撑着。从而，当轴向力向上加荷时，这可以因尾端卡在支架里致使燃料组件抽出或燃料元件束加长或缩短的条件下而发生，有可能发生设计未规定的下格架变形。以解决这一问题，下格架进行加厚。这可增加下格架的金属耗用量及其制造劳动量。由于下格架内冲击式孔的高度增加，燃料组件的未加热下部区域中的水力阻力相应地增大。
发明内容
所申请的发明要解决的一个技术任务是燃料组件可靠性的提高及其制造成本降低。
本发明所达到的技术效果：燃料组件的下格架刚接着尾端肋片的结构设计。这样一来，该结构允许减小下格架的厚度，降低燃料组件的未加热下部区域中的水力阻力。
技术效果达到途径：包括燃料元件束、定位格架、管式道、下格架和尾端的燃料组件中，根据发明证书，下格架配有销钉，而尾端肋片带有套管。中央销与套管牢牢地连接着。
附图说明
发明的要点由图纸说明。图1中示出燃料组件的未加热下部区域。
具体实施方式
包括燃料元件束(1)、定位格架(2)、管式道(3)、下格架(4)、尾端(5)和肋片(6)的反应堆燃料组件以其下格架配有中央销(7)，尾端肋片(6)带有套管(8)，同时中央销(7)与套管(8)牢牢地连接着为特点。
燃料组件是由定位格架(2)、管式道(3)、带有中央销(7)的下格架(4)装配的。其次，燃料元件束(1)设置在燃料组件中，然后燃料元件束(1)与尾端(5)进行连接，此时中央销(7)装入尾端的套管(5)中。确保下格架(4)的底端由尾端(6)肋片支撑之后，中央销(7)焊在套管(8)上，而下格架的角都焊在尾端棱边上。
装置如下操作。固定在套管里的金属耗用量减少的下格架中央销保证下格架在接受反应堆内重量、水力和振动载荷作用时的尺寸稳定性。下格架的厚度减小致使燃料组件的未加热下部区域中的水力阻力减少，从而，燃料组件内的水力阻力整体下降。
工业应用
更加合理地，把提出的技术方案应用于压水堆堆芯中、设有燃料元件的燃料组件中。

Claims (1)

1.一种反应堆燃料组件，包括燃料元件束(1)、定位格架(2)、管式道(3)、下格架(4)、和带肋片(6)的尾端(5)，其特征在于，该反应堆燃料组件的下格架(4)配有中央销(7)，尾端(5)的肋片(6)带有套管(8)，中央销(7)与套管(8)牢牢地连接着，下格架(4)的角都焊在尾端(5)的棱边上。
CN201880001940.9A 2017-09-29 2018-03-29 反应堆燃料组件 Active CN109844870B (zh)

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RU2017133876 2017-09-29
RU2017133876A RU2654531C1 (ru) 2017-09-29 2017-09-29 Тепловыделяющая сборка ядерного реактора
PCT/RU2018/000204 WO2019066681A1 (ru) 2017-09-29 2018-03-29 Тепловыделяющая сборка ядерного реактора

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CN109844870B true CN109844870B (zh) 2023-11-17

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CN (1) CN109844870B (zh)
EA (1) EA036717B1 (zh)
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WO (1) WO2019066681A1 (zh)

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Publication number Priority date Publication date Assignee Title
CN112955976B (zh) * 2019-10-15 2024-02-27 Tvel股份公司 反应堆燃料组件尾端

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US4427624A (en) * 1981-03-02 1984-01-24 Westinghouse Electric Corp. Composite nozzle design for reactor fuel assembly
US4526744A (en) * 1981-05-15 1985-07-02 Ab Asea-Atom Fuel assembly for a boiling water reactor
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CN85109766A (zh) * 1984-12-06 1986-07-09 法玛汤姆和柯吉玛公司 核反应堆用燃料组件
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CN103377715A (zh) * 2012-04-17 2013-10-30 巴布科克和威尔科克斯M能量股份有限公司 由相交金属条带制成的用于核燃料组件的下端配件
CN102867547A (zh) * 2012-09-18 2013-01-09 中科华核电技术研究院有限公司 轻水反应堆核燃料组件的下管座及底部装置
CN103021477A (zh) * 2012-11-26 2013-04-03 中国核动力研究设计院 反应堆燃料组件的下管座
CN106531233A (zh) * 2016-12-29 2017-03-22 中国科学院合肥物质科学研究院 一种反应堆燃料组件

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EP3690890A1 (en) 2020-08-05
CN109844870A (zh) 2019-06-04
EA036717B1 (ru) 2020-12-11
EA201800597A1 (ru) 2020-02-14
WO2019066681A1 (ru) 2019-04-04
RU2654531C1 (ru) 2018-05-21
EP3690890A4 (en) 2021-06-16

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