JPS61195393A - Polygonal fuel aggregate for nuclear reactor - Google Patents
Polygonal fuel aggregate for nuclear reactorInfo
- Publication number
- JPS61195393A JPS61195393A JP61034956A JP3495686A JPS61195393A JP S61195393 A JPS61195393 A JP S61195393A JP 61034956 A JP61034956 A JP 61034956A JP 3495686 A JP3495686 A JP 3495686A JP S61195393 A JPS61195393 A JP S61195393A
- Authority
- JP
- Japan
- Prior art keywords
- fuel
- fuel assembly
- bolt
- assembly according
- fuel 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
-
- 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
- G21C3/324—Coats or envelopes for 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
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
- Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (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】
〔産業上の利用分野ｊ
本発明は、外側包囲体で規則的な格子の形に締め付けら
れる多数の燃料棒を有し、燃料棒の外周面にある縦に延
びたリブによって隣接する燃料棒の間隔を決定している
原子炉特に増殖炉の多角形燃料集合体に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention comprises a number of fuel rods clamped together in a regular grid in an outer enclosure, with vertically extending The present invention relates to polygonal fuel assemblies for nuclear reactors, particularly breeder reactors, in which ribs determine the spacing between adjacent fuel rods.
かかるいわゆる゛リブ付スペーサ”は狭い燃料棒格子の
場合、燃料棒の間に帯板が係合するスペーサよりも好適
である。もっともリブ付スペーサの場合、燃料集合体は
外側からその横断面において幾何学的に正確に規定しな
ければならない。そのためには縁にある燃料棒が完全に
あるいは部分的にその長さを亘って案内されると有利で
あり、その場合燃料棒の外側面とスペーサとの間のチャ
ネルは、局所的に弱過ぎたり強過ぎたりする冷却を避け
るために、冷却条件に合わせねばならない。Such so-called "ribbed spacers" are preferred in the case of narrow fuel rod grids to spacers in which strips engage between the fuel rods, although in the case of ribbed spacers the fuel assembly is The geometry must be exactly defined.For this purpose, it is advantageous if the fuel rods at the edges are guided completely or partially over their length, in which case the outer surfaces of the fuel rods and the spacers The channels between must be matched to the cooling conditions to avoid locally too weak or too strong cooling.
リブ付スペーサは種々の形式が知られている。Various types of ribbed spacers are known.
例えばドイツ連邦共和国特許出願公開第３００８４５６
号公報（特開昭５６−１３８２７７号公報）に、角が蝶
番状に接続されているベルトが示されている。For example, German Patent Application No. 3008456
JP-A-56-138277 discloses a belt whose corners are connected in a hinged manner.
〔発明が解決しようとする問題点」
本発明の目的は、中性子物理学的および熱力学的に良好
な条件で狭い許容誤差で丑述した燃料集合体を作ること
にある。[Problems to be Solved by the Invention] The object of the present invention is to produce the fuel assembly mentioned above under favorable neutron-physical and thermodynamic conditions and with narrow tolerances.
本発明によればこの目的は、冒頭に述べた形式の燃料集
合体において、外側包囲体が複数の固いボックス部分か
ら成り、これらのボックス部分が平らな外側面と、その
内側面にある隣接する燃料棒間に係合する対称構造の支
持突起とを有し、ボックス部分の角における支持面が燃
料棒に適合された外側輪郭と開口とを備え、前記ボック
ス部分が間隔部材を介在した状態で、前記支持面の開口
に挿入された通しボルトによって一体に締め付けられて
いることによって達成される。According to the invention, this object is achieved in a fuel assembly of the type mentioned at the outset, in which the outer envelope consists of a plurality of rigid box parts, which box parts have a flat outer surface and an adjacent support projections of symmetrical construction that engage between the fuel rods, the support surface at the corner of the box portion having an outer contour adapted to the fuel rods and an aperture, said box portion having a spacing member interposed therebetween; , are achieved by being tightened together by a through bolt inserted into an opening in the support surface.
本発明により外側包囲体は、密閉形のボックスに比べて
軸方向に短い部材の形になる。従ってボックス部分を例
えば電解加工あるいは放電加工で非常に正確に製作する
ことができる。According to the invention, the outer envelope is in the form of an axially shorter member than a closed box. The box part can therefore be produced with great precision, for example by electrolytic machining or electrical discharge machining.
以下図面に示す実施例に基づいて本発明の詳細な説明す
る。The present invention will be described in detail below based on embodiments shown in the drawings.
図示した燃料集合体は例えばドイツ連邦共和国特許出願
公開第３００９９３７号公報に記載されているような加
圧水冷却形の高転換炉に対して用意される。燃料集合体
は断面正六角形をしている。The illustrated fuel assembly is provided for a pressurized water-cooled high conversion reactor as described, for example, in DE 30 09 937 A1. The fuel assembly has a regular hexagonal cross section.
その燃料棒１は直線２，３で描かれた六角形格子の交点
に位置している。円筒状燃料棒１の直径は９．５ｍｍで
ある。その外周面に６つのリブ４が円周方向に分布して
形成され、これらは３°の小さなピッチでひねられて縦
に延びている。これらのリブ４によって燃料棒１は相互
におよび外側包囲体６に接触支持されている。The fuel rod 1 is located at the intersection of a hexagonal grid drawn by straight lines 2 and 3. The diameter of the cylindrical fuel rod 1 is 9.5 mm. Six ribs 4 are formed on the outer circumferential surface thereof and are distributed in the circumferential direction, and these ribs are twisted at a small pitch of 3 degrees and extend vertically. These ribs 4 support the fuel rods 1 in contact with each other and with the outer envelope 6.
外側包囲体６は全体でボックス７として形成され、これ
は燃料集合体の例えば２．５ｎ＋の長さを越えて延びて
いる。ボックス７は燃料集合体の長手方向に約２．１ｍ
の高さに亘って分布された７つのボックス部分８を有し
ている。The outer envelope 6 is formed as a box 7 as a whole, which extends over a length of the fuel assembly, for example 2.5n+. Box 7 is approximately 2.1m in the longitudinal direction of the fuel assembly.
It has seven box parts 8 distributed over a height of .
このボックス部分８はステンレス鋼例えばＤＩＮ規格の
Ｓｔ １．４５５０で作られる。これは電解加工で±０
．１１１＋１の精度で製作される。この形状は燃料集合
体の断面正六角形に対応した平らな外側面１０を有して
いる。内側面に１０．５１＋＋＋＋＋の均一な間隔を隔
てて複数の支持突起１１が設けられている。This box part 8 is made of stainless steel, for example DIN standard St 1.4550. This is ±0 due to electrolytic processing.
．． Manufactured with an accuracy of 111+1. This shape has a flat outer surface 10 that corresponds to the regular hexagonal cross section of the fuel assembly. A plurality of support protrusions 11 are provided on the inner surface at uniform intervals of 10.51++++.
この支持突起１１は第３図から明らかなように、縁にあ
るリブ４付の燃料棒（縁の燃料棒）１に対するくぼみ１
４を形成している。As is clear from FIG. 3, this support protrusion 11 has a recess 1 for the fuel rod 1 with ribs 4 on the edge (edge fuel rod).
4 is formed.
支持突起１１は断面台形をしている。台形面は相互に６
０′の角度を成している。突起１１は燃料棒１の直径の
約３分の１にあたる３ｍｍの高さをしている。The support protrusion 11 has a trapezoidal cross section. The trapezoidal surfaces are mutually 6
It forms an angle of 0'. The protrusion 11 has a height of 3 mm, which is about one third of the diameter of the fuel rod 1.
ボックス部分８はその丸められた角１６の範囲に、燃料
集合体横断面の内部に約１本の燃料棒の範囲を占める程
度に突き出した支持面１７を形成している。この支持面
１７に円筒状孔の形をした開口１８が設けられている。In the area of its rounded corner 16, the box part 8 forms a supporting surface 17 which projects into the interior of the fuel assembly cross-section to an extent that extends approximately one fuel rod. This support surface 17 is provided with an opening 18 in the form of a cylindrical hole.
この開口１８に通しボルト１９として締め付けボルトが
通され、第２図から明らかなようにこのボルト１９によ
って、燃料集合体の長さに亘って分布された複数のボッ
クス部分８が互いに一体に締め付けられている。A tightening bolt is passed through this opening 18 as a through bolt 19, with which, as is clear from FIG. ing.
互いに上下に位置するボックス部分８は、通しボルト１
９を取り囲むブツシュ２０で間隔が隔てられている。こ
のブツシュ２０は、ボックス７の清らかな外側輪郭を形
成するために、ボックス部分８に接続好ましくは溶接さ
れている板金２１に付属している。The box parts 8 located above and below each other are connected to the through bolts 1
They are separated by bushings 20 surrounding the bushings 9. This bushing 20 is attached to a sheet metal 21 which is connected, preferably welded, to the box part 8 in order to form a clean outer contour of the box 7.
第１図は本発明に基づく燃料集合体の水平断面図（第２
図におけるＩ−Ｉ線に沿う断面図）、第２図は複数のボ
ックス部分の一部を示す本発明に基づく燃料集合体の垂
直断面図、第３図はボックス部分の一部拡大水平断面図
である。
ｌ：燃料棒、４：リブ、６：外側包囲体、７：ボックス
、８：ボックス部分、１１：支持突起、１６：燃料集合
体の角、１８：開口（孔）、１９：通しボルト。FIG. 1 is a horizontal sectional view of a fuel assembly based on the present invention (second
2 is a vertical sectional view of a fuel assembly according to the present invention showing a part of a plurality of box parts, and FIG. 3 is a partially enlarged horizontal sectional view of the box part. It is. l: Fuel rod, 4: Rib, 6: Outer enclosure, 7: Box, 8: Box portion, 11: Support projection, 16: Corner of fuel assembly, 18: Opening (hole), 19: Through bolt.
Claims (1)
数の燃料棒を有し、燃料棒の外周面にある縦に延びたリ
ブによって隣接する燃料棒の間隔を決定している原子炉
の多角形燃料集合体において、外側包囲体（６）が複数
の固いボックス部分（８）から成り、これらのボックス
部分（８）が平らな外側面（１０）と、その内側面にあ
る隣接する燃料棒（１）間に係合する対称構造の支持突
起（１１）とを有し、ボックス部分（８）の角（１６）
における支持面（１７）が燃料棒（１）に適合された外
側輪郭と開口（１８）とを備え、前記ボックス部分（８
）が間隔部材（２０）を介在した状態で、前記支持面（
１７）の開口（１８）に挿入された通しボルト（１９）
によって一体に締め付けられていることを特徴とする原
子炉の多角形燃料集合体。 ２）支持突起（１１）が断面台形をしていることを特徴
とする特許請求の範囲第１項記載の燃料集合体。 ３）開口（１８）が孔であり、通しボルト（１９）が通
しの締め付けボルトであることを特徴とする特許請求の
範囲第１項または第２項記載の燃料集合体。 ４）間隔部材が通しボルト（１９）を取り囲むプッシュ
（２０）であり、これらのブッシュ（２０）の間に、ボ
ックス部分（８）に溶接されその延長部分としての板金
（２１）が配置されていることを特徴とする特許請求の
範囲第１項ないし第３項のいずれか１項に記載の燃料集
合体。 ５）板金（２１）が燃料棒と間隔を隔てて延びているこ
とを特徴とする特許請求の範囲第４項記載の燃料集合体
。[Claims] 1) having a number of fuel rods clamped in a regular lattice in an outer envelope, the spacing between adjacent fuel rods being determined by longitudinally extending ribs on the outer circumferential surface of the fuel rods; In polygonal fuel assemblies for nuclear reactors in which The corners (16) of the box part (8) have support projections (11) of symmetrical construction that engage between adjacent fuel rods (1) on the sides;
a support surface (17) in said box part (8) with an outer contour adapted to the fuel rod (1) and an opening (18);
) with the spacing member (20) interposed, the support surface (
The through bolt (19) inserted into the opening (18) of 17)
A polygonal fuel assembly for a nuclear reactor, characterized in that it is tightened together by. 2) The fuel assembly according to claim 1, wherein the support projection (11) has a trapezoidal cross section. 3) The fuel assembly according to claim 1 or 2, characterized in that the opening (18) is a hole and the through bolt (19) is a through tightening bolt. 4) The spacing member is a push (20) surrounding the through bolt (19), and between these bushes (20) a sheet metal (21) welded to the box part (8) and as an extension thereof is arranged. The fuel assembly according to any one of claims 1 to 3, characterized in that: 5) A fuel assembly according to claim 4, characterized in that the sheet metal (21) extends at a distance from the fuel rods.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3506313.0 | 1985-02-22 | ||
| DE19853506313 DE3506313A1 (en) | 1985-02-22 | 1985-02-22 | Polygonal fuel element for a nuclear reactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61195393A true JPS61195393A (en) | 1986-08-29 |
Family
ID=6263338
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61034956A Pending JPS61195393A (en) | 1985-02-22 | 1986-02-19 | Polygonal fuel aggregate for nuclear reactor |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPS61195393A (en) |
| DE (1) | DE3506313A1 (en) |
| FR (1) | FR2578086B1 (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| LU55135A1 (en) * | 1967-12-20 | 1968-03-05 | ||
| FR2141559B1 (en) * | 1971-06-16 | 1974-06-21 | Commissariat Energie Atomique | |
| BE785095A (en) * | 1972-06-19 | 1972-10-16 | Belgonucleaire Sa | Nuclear fuel assembly - with parallel fuel rods enclosed in outer jacket with reduced area |
| FR2517866B1 (en) * | 1981-12-04 | 1987-05-07 | Framatome Sa | COMBUSTIBLE ASSEMBLY FOR A SUBMODER NUCLEAR REACTOR |
-
1985
- 1985-02-22 DE DE19853506313 patent/DE3506313A1/en not_active Withdrawn
-
1986
- 1986-02-07 FR FR8601732A patent/FR2578086B1/en not_active Expired
- 1986-02-19 JP JP61034956A patent/JPS61195393A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| FR2578086A1 (en) | 1986-08-29 |
| DE3506313A1 (en) | 1986-08-28 |
| FR2578086B1 (en) | 1989-01-06 |
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