JPH0455595U - - Google Patents
Info
- Publication number
- JPH0455595U JPH0455595U JP1990097501U JP9750190U JPH0455595U JP H0455595 U JPH0455595 U JP H0455595U JP 1990097501 U JP1990097501 U JP 1990097501U JP 9750190 U JP9750190 U JP 9750190U JP H0455595 U JPH0455595 U JP H0455595U
- Authority
- JP
- Japan
- Prior art keywords
- plate
- corner
- fuel
- bullet
- screw rod
- 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
- 239000000446 fuel Substances 0.000 claims description 10
- 238000009835 boiling Methods 0.000 claims description 5
- 239000003758 nuclear fuel Substances 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 230000037431 insertion Effects 0.000 claims description 3
- 238000003780 insertion Methods 0.000 claims description 3
- 230000000712 assembly Effects 0.000 claims description 2
- 238000000429 assembly Methods 0.000 claims description 2
- 125000006850 spacer group Chemical group 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 230000000052 comparative effect Effects 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
Description
第１図は本考案に係るばね組立体と、これを取
り付けるため沸騰水型原子炉用核燃料集合体に設
けたコーナ中空柱およびナツトを示す分解傾斜図
、第２図は従来と本考案のコーナ中空柱を示した
一部切欠の比較説明図、第３図は従来の沸騰水型
原子炉用核燃料集合体の原子炉内における上部の
みを示した縦断正面図、第４図は同上従来の燃料
集合体が四個だけ原子炉内の単位格子内に嵌装さ
れている状態を示した平面図、第５図は同上従来
の燃料集合体に設けられたばね組立体とコーナ中
空柱とを示した分解斜視図である。
１……沸騰水型原子炉用核燃料集合体、２……
燃料棒、２ａ……燃料棒の上部端栓、３……上部
タイプレート、４……燃料束、５……チヤンネル
ボツクス、５ａ……コーナ板の通孔、５ｂ……コ
ーナ板、６……はね組立体、８……止め具、８ａ
……押当板、８ｂ……止め具の通孔、８ｃ……横
向天板、９……弾板、９ａ……段付板ばね、９ｂ
……弾板の通孔、９ｃ……横向頭板、１１……コ
ーナ中空柱、１１ａ……上端部、１２……螺杆、
１３……ナツト、ｃ……制御棒挿入間隙。
Figure 1 is an exploded inclined view showing the spring assembly according to the present invention and the corner hollow column and nut provided in a nuclear fuel assembly for a boiling water reactor to attach the spring assembly, and Figure 2 is a corner diagram of the conventional and present invention. A comparative explanatory diagram with a partial cutout showing a hollow column, Figure 3 is a longitudinal sectional front view showing only the upper part of a conventional nuclear fuel assembly for a boiling water reactor inside the reactor, and Figure 4 is the same as the conventional fuel assembly. A plan view showing a state in which only four assemblies are fitted into a unit cell in a nuclear reactor, and Fig. 5 shows a spring assembly and a corner hollow column provided in the conventional fuel assembly as above. It is an exploded perspective view. 1...Nuclear fuel assembly for boiling water reactor, 2...
Fuel rod, 2a... Upper end plug of fuel rod, 3... Upper tie plate, 4... Fuel bundle, 5... Channel box, 5a... Corner plate through hole, 5b... Corner plate, 6... Spring assembly, 8... stopper, 8a
...Press plate, 8b...Through hole for stopper, 8c...Horizontal top plate, 9...Bullet plate, 9a...Stepped leaf spring, 9b
...Bullet plate through hole, 9c...Horizontal head plate, 11...Corner hollow column, 11a...Top end, 12...Screw rod,
13...nut, c...control rod insertion gap.
Claims (1)
正方配列とした多数の燃料棒が引き揃え状態にて
列設され、これらの燃料棒が上下数段のスペーサ
によつて支持されることにより燃料束が構成され
ると共に、当該燃料束の外側には角形のチヤンネ
ルボツクスが被嵌されてなる沸騰水型原子炉用核
燃料集合体において、その上部タイプレートの制
御棒挿入間隙側におけるコーナ部に上突され、か
つ燃料棒の上部端栓が嵌入されるコーナ中空柱の
上端部から螺杆を突設し、当該螺杆には、順次前
記チヤンネルボツクスのコーナ板、当該チヤンネ
ルボツクスのコーナ二辺面に夫々当接する押当板
をもつた縦向きアングル状の止め具の横向天板、
そして上記各押当板に夫々当接して外向きにく字
状にて曲突された段付板ばねをもつた弾板の横向
頭板における夫々の通孔を貫通して、上記コーナ
板、止め具、弾板によるばね組立体を前記コーナ
中空柱の上端部にて重積して、上記弾板の横向頭
板から延出した当該螺杆に、ナツトを螺着してな
る沸騰水型原子炉用核燃料集合体における制御棒
挿入間隙保持用のばね組立体取付装置。 A large number of fuel rods are arranged in a square array between the upper tie plate and the lower tie plate, and these fuel rods are supported by several stages of spacers above and below to form a fuel bundle. In a nuclear fuel assembly for a boiling water reactor, in which a rectangular channel box is fitted on the outside of the fuel bundle, a corner portion of the upper tie plate on the control rod insertion gap side is struck upward. , and a screw rod is provided protruding from the upper end of the corner hollow column into which the upper end plug of the fuel rod is inserted, and the screw rod is in contact with the corner plate of the channel box and the two corner surfaces of the channel box, respectively. Horizontal top plate with a vertical angle-shaped stopper with a push plate,
The corner plate is then passed through each through hole in the horizontal head plate of the bullet plate having stepped leaf springs that are in contact with the respective pressing plates and curved outward in a dogleg shape. A boiling water type atom formed by stacking a spring assembly including a stopper and a bullet plate at the upper end of the corner hollow column, and screwing a nut to the screw rod extending from the horizontal head plate of the bullet plate. A spring assembly mounting device for maintaining control rod insertion gaps in nuclear fuel assemblies for reactors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990097501U JPH0455595U (en) | 1990-09-17 | 1990-09-17 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990097501U JPH0455595U (en) | 1990-09-17 | 1990-09-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0455595U true JPH0455595U (en) | 1992-05-13 |
Family
ID=31837926
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1990097501U Pending JPH0455595U (en) | 1990-09-17 | 1990-09-17 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0455595U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006068144A1 (en) * | 2004-12-21 | 2006-06-29 | The Tokyo Electric Power Company, Incorporated | Channel fastener |
-
1990
- 1990-09-17 JP JP1990097501U patent/JPH0455595U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006068144A1 (en) * | 2004-12-21 | 2006-06-29 | The Tokyo Electric Power Company, Incorporated | Channel fastener |
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