JPS60152984A - Fuel spacer - Google Patents
Fuel spacerInfo
- Publication number
- JPS60152984A JPS60152984A JP59008629A JP862984A JPS60152984A JP S60152984 A JPS60152984 A JP S60152984A JP 59008629 A JP59008629 A JP 59008629A JP 862984 A JP862984 A JP 862984A JP S60152984 A JPS60152984 A JP S60152984A
- Authority
- JP
- Japan
- Prior art keywords
- fuel
- support frame
- spacer
- fuel rods
- rods
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
Landscapes
- Fuel-Injection Apparatus (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〔発明の属する技術分野〕
本発明は、燃料集合体の各燃料棒を一定の間隔で保持す
る燃料スペーサに関する。DETAILED DESCRIPTION OF THE INVENTION [Field of the Invention] The present invention relates to a fuel spacer that holds fuel rods of a fuel assembly at regular intervals.
従来の原子炉（ＢＷＲ）の燃料集合体は第１図に示すよ
うな構造を有している。チャンネルボックス１内にその
軸方向に沿って多数の燃料棒２を挿入し、この燃料棒２
の上端を上部タイプレート３で、下端を下部タイプレー
ト４で格子状配置に支持している。A fuel assembly of a conventional nuclear reactor (BWR) has a structure as shown in FIG. A large number of fuel rods 2 are inserted into the channel box 1 along its axial direction, and the fuel rods 2
Its upper end is supported by an upper tie plate 3, and its lower end is supported by a lower tie plate 4 in a lattice arrangement.
燃料棒２の軸方向には一定の間隔を隔てて複数の燃料ス
ペーサ５が設けられている。このスペーサ５は、各燃料
棒２を水子面内で一定間隔に維持するとともに、長尺と
なる各燃料棒２の曲りを防止する役目を果し、さらに地
震等に際して各燃料棒２の振動を抑制する。詳細は第２
図（ａ） 、 （ｂ）に示すが、水平面内に格子６をバ
ー７により形成し、その中で燃料棒２をランタンスプリ
ング８及びデイパイダ９により３点で支持している。A plurality of fuel spacers 5 are provided at regular intervals in the axial direction of the fuel rod 2 . The spacer 5 serves to maintain the fuel rods 2 at regular intervals within the water plane, and also serves to prevent the long fuel rods 2 from bending, and also serves to prevent vibrations of the fuel rods 2 in the event of an earthquake or the like. suppress. Details are in the second
As shown in Figures (a) and (b), a lattice 6 is formed in a horizontal plane by bars 7, within which the fuel rod 2 is supported at three points by a lantern spring 8 and a depider 9.
地震等の外力による燃料集合体の変形は、チャンネルボ
ックスも含めた全体としての変形が支配的になると考え
られ、地震時に燃料集合体の健全性及び制御棒の挿入機
能を確保するためには、燃料集合体全体としての変形を
小さく押えることが必要となる。Deformation of the fuel assembly due to external forces such as earthquakes is thought to be dominated by deformation of the entire structure, including the channel box.In order to ensure the integrity of the fuel assembly and the ability to insert control rods in the event of an earthquake, It is necessary to suppress the deformation of the fuel assembly as a whole.
本発明は、燃料集合体が単体として持つ減衰を増大させ
、その地震時の応答を低減させるための燃料スペーサを
提供することを目的としている。SUMMARY OF THE INVENTION An object of the present invention is to provide a fuel spacer for increasing the attenuation of a fuel assembly as a single unit and reducing its response during an earthquake.
この目的を達成するために本発明では、燃料スペーサで
燃料棒を支持する際に、従来の３点支持に対して、板ば
ね（ランタンスプリング）と筒状のサポートフレームの
曲面部により支持したことを特徴とする。To achieve this objective, in the present invention, when supporting fuel rods with fuel spacers, instead of the conventional three-point support, the fuel rods are supported by a plate spring (lantern spring) and a curved part of a cylindrical support frame. It is characterized by
本発明によれば、燃料棒と燃料スペーサとの摩擦抵抗が
増すことＫより、燃料集合体の減衰が増大し、地震等の
外力に対する燃料集合体の応答を低減することが出来る
。According to the present invention, since the frictional resistance between the fuel rods and the fuel spacer increases, the damping of the fuel assembly increases, and the response of the fuel assembly to external forces such as earthquakes can be reduced.
以下本発明の一実施例を図面により説明する。 An embodiment of the present invention will be described below with reference to the drawings.
第３図に示す様に本発明による燃料スペーサ１５はバー
７及びサポートフレーム１０によシ格子６を形成してい
る。各格子６の内には、燃料棒２の外周に側圧を加える
ランタンスプリング８とその側圧に抗して燃料棒２を支
持するサポートフレーム１０，１６．１７の曲面部１４
がありこれらにより各燃料棒２を一定間隔に確実に保持
している。As shown in FIG. 3, fuel spacers 15 according to the invention form a grid 6 on bars 7 and support frame 10. As shown in FIG. Inside each grid 6, there is a lantern spring 8 that applies lateral pressure to the outer circumference of the fuel rod 2, and a curved part 14 of a support frame 10, 16, 17 that supports the fuel rod 2 against the lateral pressure.
These ensure that the fuel rods 2 are held at constant intervals.
賞、サポートフレーム１０，１６．１７の内側は、空洞
であり冷却水の上下方向の流路となる。The inner sides of the support frames 10, 16 and 17 are hollow and serve as vertical flow paths for cooling water.
第４図は他の実施例としてサポートフレーム２゜の拡大
図を示したものであり１曲面部の上下方向に複数のフィ
ン１１を設置することにより燃料棒２を線接触によって
支持する。FIG. 4 shows an enlarged view of a support frame 2° as another embodiment, in which a plurality of fins 11 are installed in the vertical direction of one curved surface to support the fuel rods 2 by line contact.
この様な構成にすると、熱効率を下げることなく、シか
も同様な効果をあげることができる。With such a configuration, a similar effect can be achieved without reducing thermal efficiency.
第１図は、燃料集合体の概略断面図、第２図（ａ）。
（ｂ）は従来の燃料スペーサに燃料棒を保持した状態を
示す概略図、第３図は本発明の一実施例を示す概略図、
第４図は本発明の他の実施例のサポートフレームを示す
斜視図である。
１・・・チャンネルボックス、２・・・燃料棒、３・・
・上部タイプレート、４・・・下部タイプレート、５．
１５・・・燃料スペーサ、６・・・格子％７・・・バー
、８・・・ランタンスプリング、９・・・デイバイダ、
１０，１６゜１７・・・サポートフレーム％ １１・・
・フィン。
代理人 弁理士 則 近 憲 佑（ほか１名）第２図
（ムリFIG. 1 is a schematic sectional view of a fuel assembly, and FIG. 2(a). (b) is a schematic diagram showing a state in which fuel rods are held in a conventional fuel spacer, FIG. 3 is a schematic diagram showing an embodiment of the present invention,
FIG. 4 is a perspective view showing a support frame according to another embodiment of the present invention. 1...Channel box, 2...Fuel rod, 3...
- Upper tie plate, 4...lower tie plate, 5.
15... Fuel spacer, 6... Lattice %7... Bar, 8... Lantern spring, 9... Divider,
10,16°17...Support frame% 11...
·fin. Agent: Patent attorney Noriyuki Chika (and 1 other person) Figure 2 (Impossible)
Claims (1)
する様に保持する燃料スペーサにおいて、サポートフレ
ーム及びバーにより等間隔の格子を形成し、前記燃料棒
を各格子内で板はねとサポートフレームの曲面部により
°支持することを特徴とする燃料スペーサ。In a fuel spacer that holds fuel rods at regular intervals from each other in a channel box, a support frame and bars form a lattice with equal spacing, and the fuel rods are held within each lattice by a plate and a curved surface of the support frame. A fuel spacer characterized by being supported by a portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59008629A JPS60152984A (en) | 1984-01-23 | 1984-01-23 | Fuel spacer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59008629A JPS60152984A (en) | 1984-01-23 | 1984-01-23 | Fuel spacer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60152984A true JPS60152984A (en) | 1985-08-12 |
Family
ID=11698239
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59008629A Pending JPS60152984A (en) | 1984-01-23 | 1984-01-23 | Fuel spacer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60152984A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109935366A (en) * | 2017-12-19 | 2019-06-25 | 中国原子能科学研究院 | A kind of spacer grid of fuel assembly with fried dough twist profile bar band |
-
1984
- 1984-01-23 JP JP59008629A patent/JPS60152984A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109935366A (en) * | 2017-12-19 | 2019-06-25 | 中国原子能科学研究院 | A kind of spacer grid of fuel assembly with fried dough twist profile bar band |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4544522A (en) | Nuclear fuel assembly spacer | |
| JPH0130119B2 (en) | ||
| GB2064202A (en) | Spacer grid for a nuclear fuel assembly | |
| US3664924A (en) | Nuclear reactor spring ferrule spacer grid | |
| JPS61253493A (en) | fuel rod support grid | |
| JPS60152984A (en) | Fuel spacer | |
| JPS61281993A (en) | Fuel assembly | |
| JP2884107B2 (en) | Fuel assembly | |
| JPS61237084A (en) | Nuclear fuel aggregate | |
| JPS6224187A (en) | Fuel aggregate | |
| JPS58122492A (en) | Fuel spacer | |
| JPS62168090A (en) | Spacer for fuel aggregate | |
| JP2958859B2 (en) | Fuel assembly for boiling water reactor | |
| JPS58120192A (en) | Fuel spacer | |
| JPH01182794A (en) | Fuel rod spacer | |
| JPS61241691A (en) | Fuel rod spacer | |
| JPH0314152B2 (en) | ||
| JPS59158093U (en) | nuclear fuel assembly | |
| JPH02107995A (en) | Fuel assembly for pressurized water nuclear reactor | |
| JPS595991A (en) | Device for retaining interval between fuel assembly | |
| JPS6345590A (en) | Fuel aggregate | |
| JPS6199889A (en) | Spacer for fuel aggregate | |
| JPS62287184A (en) | Spacer of fuel aggregate | |
| JPS58129286A (en) | Fuel assembly | |
| JPS6170487A (en) | Supporter for fuel aggregate |