JPH0455596U - - Google Patents
Info
- Publication number
- JPH0455596U JPH0455596U JP1990097502U JP9750290U JPH0455596U JP H0455596 U JPH0455596 U JP H0455596U JP 1990097502 U JP1990097502 U JP 1990097502U JP 9750290 U JP9750290 U JP 9750290U JP H0455596 U JPH0455596 U JP H0455596U
- Authority
- JP
- Japan
- Prior art keywords
- end plug
- rod
- tie plate
- tie
- insertion hole
- 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
- 230000037431 insertion Effects 0.000 claims description 6
- 238000003780 insertion Methods 0.000 claims description 6
- 239000003758 nuclear fuel Substances 0.000 claims description 3
- 238000009835 boiling Methods 0.000 claims description 2
- 125000006850 spacer group Chemical group 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 239000000446 fuel Substances 0.000 claims 4
- 239000011159 matrix material Substances 0.000 claims 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
- Holders For Apparel And Elements Relating To Apparel (AREA)
Description
第１図は本考案に係る沸騰水型原子炉用核燃料
集合体の上部タイプレートを示す平面図、第２図
は同上集合体におけるタイロツド部分を示した一
部切欠の部分側面図、第３図は従来の同上核燃料
集合体を示す一部切欠の正面図、第４図は第３図
における上部タイプレートの平面略示図である。
１……上部タイプレート、１ａ……グリツド部
、１ｂ……コーナポスト、１ｃ……フリーロツド
の端栓挿入孔、１Ｃ……タイロツドの端栓挿入孔
、２……下部タイプレート、２ａ……端栓受承孔
、２ｂ……端栓受承螺孔、３……フリーロツド、
３ａ……上部端栓、３ｂ……下部端栓、４……タ
イロツド、４Ａ……螺旋付上部端栓、４ｂ……螺
旋付下部端栓、５……膨張スプリング、６……ス
ペーサ、７……チヤンネルボツクス、８……ワツ
シヤ、９……ロツクナツト、Ｌ……タイロツドの
軸心、ｌ……タイロツドの螺旋付上部端栓の軸心
。
Fig. 1 is a plan view showing the upper tie plate of a nuclear fuel assembly for a boiling water reactor according to the present invention, Fig. 2 is a partially cutaway side view showing the tie rod portion of the same assembly, and Fig. 3 4 is a partially cutaway front view showing the conventional nuclear fuel assembly as above, and FIG. 4 is a schematic plan view of the upper tie plate in FIG. 3. 1... Upper tie plate, 1a... Grid portion, 1b... Corner post, 1c... Free rod end plug insertion hole, 1C... Tie rod end plug insertion hole, 2... Lower tie plate, 2a... End Plug receiving hole, 2b... End plug receiving screw hole, 3... Free rod,
3a... Upper end plug, 3b... Lower end plug, 4... Tie rod, 4A... Upper end plug with spiral, 4b... Lower end plug with spiral, 5... Expansion spring, 6... Spacer, 7... ... Channel box, 8 ... Washer, 9 ... Lock nut, L ... Axis center of tie rod, l ... Axis center of spiral upper end plug of tie rod.
Claims (1)
上部タイプレートと下部タイプレートとの間に、
引揃え状態にて正方行列状とした燃料要素である
フリーロツドと、最外周側にあつてフリーロツド
に隣装のタイロツドとを配装して、これら燃料要
素と前記グリツド部との間に膨張スプリングを介
装すると共に、当該燃料要素の長さ方向所要数段
箇所にスペーサを配設し、上部タイプレートと下
部タイプレートとの間に燃料要素を被覆するチヤ
ンネルボツクスが取り付けられ、前記フリーロツ
ドの下部端栓は下部タイプレートの端栓受承孔に
受、上部端栓は前記グリツド部の端栓挿入孔に不
出頭状態にて挿入され、タイロツドの螺旋付下部
端栓は下部タイプレートの端栓受承螺孔に螺着、
螺旋付上部端栓は前記端栓挿入孔から出頭状態に
て挿通され、当該出頭部には、ワツシヤを介して
ロツクナツトが螺着されてなる核燃料集合体にお
いて、上記タイロツドの螺旋付上部端栓が、当該
タイロツドの軸心から偏倚して立設されると共に
、上部タイプレートの前記グリツド部にあつて最
外周辺側に穿設されたフリーロツド用の端栓挿入
孔よりも、上記の偏倚に対応して内側に穿設した
タイロツド用の端栓挿入孔に、前記の螺旋付上部
端栓が挿通されてなる沸騰水型原子炉用核燃料集
合体。 Between the upper tie plate and the lower tie plate with corner posts set up from the four corners of the grid,
A free rod, which is a fuel element arranged in a square matrix shape in an aligned state, and a tie rod adjacent to the free rod on the outermost periphery side are arranged, and an expansion spring is installed between these fuel elements and the grid section. At the same time, spacers are arranged at required several stages in the length direction of the fuel element, and a channel box covering the fuel element is attached between the upper tie plate and the lower tie plate, and the lower end of the free rod is The plug is received in the end plug receiving hole of the lower tie plate, the upper end plug is inserted into the end plug insertion hole of the grid part in a non-protruding state, and the spiral lower end plug of the tie rod is inserted into the end plug receiving hole of the lower tie plate. Screw into the screw hole,
The spiral upper end plug of the tie rod is inserted through the end plug insertion hole in a protruding state, and a lock nut is screwed to the protruding head via a washer. , is erected with an offset from the axis of the tie rod, and corresponds to the above deviation than the end plug insertion hole for the free rod, which is bored on the outermost periphery of the grid section of the upper tie plate. A nuclear fuel assembly for a boiling water reactor, in which the spiral upper end plug is inserted into an end plug insertion hole for a tie rod that is bored inside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990097502U JPH0455596U (en) | 1990-09-17 | 1990-09-17 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990097502U JPH0455596U (en) | 1990-09-17 | 1990-09-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0455596U true JPH0455596U (en) | 1992-05-13 |
Family
ID=31837927
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1990097502U Pending JPH0455596U (en) | 1990-09-17 | 1990-09-17 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0455596U (en) |
-
1990
- 1990-09-17 JP JP1990097502U patent/JPH0455596U/ja active Pending
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