JPS6237798U - - Google Patents
Info
- Publication number
- JPS6237798U JPS6237798U JP1985127786U JP12778685U JPS6237798U JP S6237798 U JPS6237798 U JP S6237798U JP 1985127786 U JP1985127786 U JP 1985127786U JP 12778685 U JP12778685 U JP 12778685U JP S6237798 U JPS6237798 U JP S6237798U
- Authority
- JP
- Japan
- Prior art keywords
- piece
- fuel assembly
- connecting piece
- end plug
- tie plate
- 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
- Supports For Pipes And Cables (AREA)
Description
第１図および第２図は本考案の一実施例を示す
もので、本考案に使用される緩み止め金具の平面
図および正面図、第３図は従来の燃料集合体を示
す概略断面図、第４図は上記燃料集合体の上部タ
イプレート部位を示す第３図Ａ部の断面図、第５
図は下部タイプレート部位を示す第３図Ｂ部の断
面図、第６図は緩み止め金具の平面図、第７図は
緩み止め金具の正面図、第８図は緩み止め金具の
取り付け状態を表わす側面図である。
１……チヤンネルボツクス、２，２ａ……燃料
棒、３……スペーサ、４……上部タイプレート、
５……下部タイプレート、９，９ａ……上部端栓
、１０……支持孔、１２……保持ナツト、２０…
…緩み止め金具、２１……連結片、２２……嵌合
孔、２３……嵌合片、２４……抱持片、２５……
方向指示突起、２６……伸長許容孔、２８……膨
張スプリング。
1 and 2 show an embodiment of the present invention, in which a plan view and a front view of a locking fitting used in the present invention are shown, and FIG. 3 is a schematic sectional view showing a conventional fuel assembly. Figure 4 is a sectional view of section A in Figure 3 showing the upper tie plate portion of the fuel assembly;
The figure is a sectional view of part B in Figure 3 showing the lower tie plate part, Figure 6 is a plan view of the locking bracket, Figure 7 is a front view of the locking bracket, and Figure 8 shows the installation state of the locking bracket. FIG. 1... Channel box, 2, 2a... Fuel rod, 3... Spacer, 4... Upper tie plate,
5... Lower tie plate, 9, 9a... Upper end plug, 10... Support hole, 12... Holding nut, 20...
... Locking fitting, 21 ... Connection piece, 22 ... Fitting hole, 23 ... Fitting piece, 24 ... Holding piece, 25 ...
Direction indicating protrusion, 26... Extension permitting hole, 28... Expansion spring.
Claims (1)
棒を下部タイプレート、上部タイプレートにより
支持し、上記各燃料棒のいくつかの上部端栓を上
部タイプレート上に突出させ、上記上部端栓の突
出部を保持ナツトにてねじ止め固定した燃料集合
体において、上部端栓の隣り合う突出部相互間に
配置される連結片の両端に前記上部端栓の突出部
に嵌合する嵌合片を連設し、この嵌合片には、上
部端栓にねじ止めされる前記保持ナツトを抱持す
るように、チヤンネルボツクスに接触しない位置
で起伏自在な２枚の抱持片を延設して成る緩み止
め金具を備えたことを特徴とする燃料集合体。 ２ 抱持片の一方は、連結片の延長上に沿つて延
設され、抱持片の他方は、燃料集合体の中心側に
向いた方向で、連結片に所定の角度をなして延設
されている実用新案登録請求の範囲第１項に記載
の燃料集合体。 ３ 連結片には、この連結片下方に位置されてい
る燃料棒の伸長を許容させる伸長許容孔が開穿さ
れている実用新案登録請求の範囲第１項に記載の
燃料集合体。[Claims for Utility Model Registration] 1. A large number of fuel rods housed in a channel box are supported by a lower tie plate and an upper tie plate, and some upper end plugs of each of the fuel rods are projected onto the upper tie plate. , in a fuel assembly in which the protrusion of the upper end plug is screwed and fixed with a retaining nut, the connecting pieces are fitted to the protrusion of the upper end plug at both ends of a connecting piece disposed between adjacent protrusions of the upper end plug; A fitting piece is provided in series, and the fitting piece has two holding pieces that can be raised and lowered at a position that does not contact the channel box so as to hold the holding nut that is screwed to the upper end plug. A fuel assembly characterized in that it is equipped with a locking fitting made of an extending piece. 2. One of the holding pieces extends along the extension of the connecting piece, and the other holding piece extends at a predetermined angle to the connecting piece in a direction facing the center of the fuel assembly. The fuel assembly according to claim 1 of the claimed utility model registration. 3. The fuel assembly according to claim 1 of the Utility Model registration claim, wherein the connecting piece is provided with an expansion permitting hole that allows the fuel rods positioned below the connecting piece to expand.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985127786U JPS6237798U (en) | 1985-08-23 | 1985-08-23 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985127786U JPS6237798U (en) | 1985-08-23 | 1985-08-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6237798U true JPS6237798U (en) | 1987-03-06 |
Family
ID=31022871
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985127786U Pending JPS6237798U (en) | 1985-08-23 | 1985-08-23 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6237798U (en) |
-
1985
- 1985-08-23 JP JP1985127786U patent/JPS6237798U/ja active Pending