JPH0311758Y2 - - Google Patents
Info
- Publication number
- JPH0311758Y2 JPH0311758Y2 JP1986020302U JP2030286U JPH0311758Y2 JP H0311758 Y2 JPH0311758 Y2 JP H0311758Y2 JP 1986020302 U JP1986020302 U JP 1986020302U JP 2030286 U JP2030286 U JP 2030286U JP H0311758 Y2 JPH0311758 Y2 JP H0311758Y2
- Authority
- JP
- Japan
- Prior art keywords
- ring element
- fuel
- spacer
- spring
- spring part
- 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.)
- Expired
Links
- 239000000446 fuel Substances 0.000 claims description 15
- 125000006850 spacer group Chemical group 0.000 claims description 12
- 238000004080 punching Methods 0.000 claims description 2
- 239000002826 coolant Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 229910001257 Nb alloy Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910001026 inconel Inorganic materials 0.000 description 1
- 229910000816 inconels 718 Inorganic materials 0.000 description 1
- 229910001090 inconels X-750 Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
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)
Description
【考案の詳細な説明】
（産業上の利用分野）
本考案は、リング素子型燃料スペーサのリング
素子の改良に関するものである。[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to an improvement of a ring element of a ring element type fuel spacer.
（従来の技術）
第３図に示す燃料集合体１０の概略図の燃料要
素２を保持するスペーサ１がリング素子型燃料ス
ペーサで、かつ、リング素子自身がばね性を有し
ている場合には、第４図に示すごとく燃料要素を
弾性的に保持するためのばね部３は、リング素子
５の円周面の位置からリング素子の中心に向けて
直接打出されている。(Prior Art) When the spacer 1 holding the fuel element 2 in the schematic diagram of the fuel assembly 10 shown in FIG. 3 is a ring element type fuel spacer, and the ring element itself has spring properties, As shown in FIG. 4, the spring portion 3 for elastically holding the fuel element is directly punched out from a position on the circumferential surface of the ring element 5 toward the center of the ring element.
このばね部は冷却材の流れに対して、流路を閉
塞する方向にあつて、スペーサの流水抵抗を増加
させる方向にある。なお、４は固定突起である。 This spring portion is in a direction that blocks the flow path with respect to the flow of the coolant, and is in a direction that increases water flow resistance of the spacer. Note that 4 is a fixed protrusion.
（考案が解決しようとする問題点）
リング素子型燃料スペーサのばね部の流水抵抗
を減少させることが本考案の目的である。(Problems to be Solved by the Invention) An object of the invention is to reduce the water flow resistance of the spring portion of a ring element type fuel spacer.
（問題点を解決するための手段）
第１図に示すように、ばね部３をリング素子５
の円周面の位置から打出さずに、ばね部を打出し
ているリング素子の壁面全体を該リング素子の円
周面の位置８より内側に位置するようにして、ば
ね部の打出し高さを低くし、冷却材流路の閉塞面
積を従来より小さくする。(Means for solving the problem) As shown in FIG.
The entire wall surface of the ring element from which the spring part is hammered out is positioned inward from position 8 on the circumferential surface of the ring element, without punching out from the position 8 of the circumferential surface of the spring part. The area of blockage of the coolant flow path is made smaller than before.
（作用）
ばね部としての打出量が減少でき、さらに冷却
材流路の閉塞面積を減少出来る。(Function) The amount of ejection of the spring portion can be reduced, and the area of blockage of the coolant flow path can also be reduced.
（実施例）
リング素子型スペーサで、リング素子自身でば
ね部を構成する場合には、材料としてはインコネ
ル（例インコネルＸ−750，インコネル718等），
Zr−Nb合金およびステンレス鋼等が用いられる。(Example) In a ring element type spacer, when the ring element itself constitutes the spring part, the material is Inconel (e.g. Inconel X-750, Inconel 718, etc.),
Zr-Nb alloy, stainless steel, etc. are used.
ばね部を打出しているリング素子の壁面のリング
素子の円周面の位置８からの隔たり即ちリング素
子中心方向への変形量６（第１図参照）は、リン
グ素子内径、燃料要素外径、ばね設計および製作
性の観点から最適な値に決定されるが、本実施例
では
リング素子内径φ14.0mm
中心方向への変形量1.0mm
である。The distance of the wall surface of the ring element from which the spring part is pressed out from the position 8 of the circumferential surface of the ring element, that is, the amount of deformation 6 toward the center of the ring element (see Fig. 1), is determined by the inner diameter of the ring element and the outer diameter of the fuel element. , is determined to be the optimum value from the viewpoint of spring design and manufacturability, but in this example, the inner diameter of the ring element is φ14.0 mm and the amount of deformation toward the center is 1.0 mm.
第２図に本考案によるリング素子を使用した燃
料スペーサの一例を部分図で示す。３はばね部、
４は固定突起、５はリング素子である。 FIG. 2 shows a partial view of an example of a fuel spacer using a ring element according to the present invention. 3 is the spring part,
4 is a fixing protrusion, and 5 is a ring element.
（考案の効果）
(1) ばね部の冷却材流路の閉塞量を減少させるこ
とが可能となり、スペーサの流水抵抗の減少が
計られる。(Effects of the invention) (1) It is possible to reduce the amount of blockage of the coolant flow path in the spring section, and the water flow resistance of the spacer can be reduced.
(2) ばね部全体があらかじめ中心方向に変形量６
を与えてあるためにばねとしての打出量７を減
少できるので、製作上有利となる。（第１図参
照）(2) The entire spring part is deformed in the center direction by 6
Since it is possible to reduce the ejection amount 7 for the spring, this is advantageous in manufacturing. (See Figure 1)
第１図は本考案のリング素子の実施例、第２図
は第１図のリング素子で構成された燃料スペーサ
の平面図の一部、第３図は燃料集合体の概略図、
第４図は従来のリング素子の平面図である。
１……スペーサ、２……燃料要素、３……ばね
部、４……固定突起、５……リング素子、６……
中心方向への変形量、７……ばねとしての打出
量、８……リング素子の円周面の位置、１０……
燃料集合体。
FIG. 1 is an embodiment of the ring element of the present invention, FIG. 2 is a partial plan view of a fuel spacer composed of the ring element of FIG. 1, and FIG. 3 is a schematic diagram of a fuel assembly.
FIG. 4 is a plan view of a conventional ring element. DESCRIPTION OF SYMBOLS 1...Spacer, 2...Fuel element, 3...Spring part, 4...Fixing protrusion, 5...Ring element, 6...
Amount of deformation toward the center, 7... Amount of ejection as a spring, 8... Position of the circumferential surface of the ring element, 10...
fuel assembly.
Claims (1)
の打出しによつて構成するリング素子を用いた燃
料スペーサにおいて、ばね部が打出されている該
リング素子の壁面全体が、該リング素子の円周面
の位置より内側に位置していることを特徴とする
燃料スペーサ。 In a fuel spacer using a ring element in which the spring part for holding the fuel element is formed by punching out from the ring element itself, the entire wall surface of the ring element on which the spring part is punched out is the same as the circumference of the ring element. A fuel spacer characterized by being located inside the surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986020302U JPH0311758Y2 (en) | 1986-02-15 | 1986-02-15 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986020302U JPH0311758Y2 (en) | 1986-02-15 | 1986-02-15 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62132498U JPS62132498U (en) | 1987-08-21 |
| JPH0311758Y2 true JPH0311758Y2 (en) | 1991-03-20 |
Family
ID=30815689
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986020302U Expired JPH0311758Y2 (en) | 1986-02-15 | 1986-02-15 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0311758Y2 (en) |
-
1986
- 1986-02-15 JP JP1986020302U patent/JPH0311758Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62132498U (en) | 1987-08-21 |
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