JPS5812157Y2 - Reactor upper grid plate restraint - Google Patents
Reactor upper grid plate restraintInfo
- Publication number
- JPS5812157Y2 JPS5812157Y2 JP1979017787U JP1778779U JPS5812157Y2 JP S5812157 Y2 JPS5812157 Y2 JP S5812157Y2 JP 1979017787 U JP1979017787 U JP 1979017787U JP 1778779 U JP1778779 U JP 1778779U JP S5812157 Y2 JPS5812157 Y2 JP S5812157Y2
- Authority
- JP
- Japan
- Prior art keywords
- cylinder
- wedge
- restraint
- grate plate
- plate restraint
- 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
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
- Monitoring And Testing Of Nuclear Reactors (AREA)
Description
【考案の詳細な説明】
本考案は原子炉の上部格子板レストレイントに関するも
のである。[Detailed Description of the Invention] The present invention relates to an upper grid plate restraint for a nuclear reactor.
先ず、第１図によって本考案が採用される原子炉を説明
する。First, a nuclear reactor to which the present invention is adopted will be explained with reference to FIG.
図において、圧力容器１内には燃料集合体３を支えるた
めに上部格子板４が設けられる。In the figure, an upper lattice plate 4 is provided inside the pressure vessel 1 to support a fuel assembly 3.
そしてこの上部格子板４は、上部格子板レストレイント
によってシュラウド２に固定される。The upper lattice plate 4 is fixed to the shroud 2 by an upper lattice plate restraint.
しかるに、従来このレストレイントは、第２固装よび第
３図に示すごとく、シュラウド２に溶接された傾斜状の
シュラワドブロック５と上部格子板４の外周円筒４１と
の間に傾斜溝のついたクサビ６を挿入し、Ｌ字形のスト
ッパ７をボルト８で締付けて固定するものであった。However, conventionally, this restraint has a second fixing and an inclined groove between the inclined shroud block 5 welded to the shroud 2 and the outer circumferential cylinder 41 of the upper lattice plate 4, as shown in FIG. A wedge 6 with a mark on it was inserted, and an L-shaped stopper 7 was tightened with a bolt 8 to fix it.
しかしながら、この従来の上部格子板レストレイントに
よると、傾斜のついたクサビ６の取外しは円筒４１に添
って垂直に引き上げ、さらに途中からはスプレィスパー
ジャ９と干渉しないよう炉の中心方向に斜めに引き上げ
るという２段階の操作が必要となり、クサビ６の取外し
が容易にできない。However, according to this conventional upper lattice plate restraint, the inclined wedge 6 is removed vertically along the cylinder 41, and then pulled up diagonally toward the center of the furnace so as not to interfere with the spray sparger 9. A two-step operation of pulling up is required, and the wedge 6 cannot be easily removed.
この為、作業時間が長くなり、作業員の放射線被曝量が
増える惧れがあった。For this reason, there was a risk that the working time would be longer and the amount of radiation exposure of the workers would increase.
本考案の目的は、このクサビの取付、取外しが容易に行
え、同時に高耐震構造の上部格子板が得られるような上
部格子板レストレイントを提供することにある。An object of the present invention is to provide an upper lattice plate restraint in which the wedges can be easily attached and removed, and at the same time an upper lattice plate with a highly seismic structure can be obtained.
本考案の特徴は、上部法子板の外周円筒を厚板によって
構成し、かつこの円筒の外周に上方に行く程炉の中心方
向に向かう傾斜溝を設けることによって、傾斜溝に係合
するクサビが当初より中心方向に斜めに上げられるよう
にした点にある。The feature of the present invention is that the outer circumferential cylinder of the upper control plate is made of a thick plate, and by providing an inclined groove on the outer circumference of this cylinder that goes upward toward the center of the furnace, the wedge that engages with the inclined groove can be The point is that it can be raised diagonally toward the center from the beginning.
上記の如く構成することにより、クサビの取付、取外し
作業の作業性が向上し、同時に上部格子板の最外周円筒
の強度が増すのでその耐震性が向上する。By configuring as described above, the workability of attaching and detaching the wedges is improved, and at the same time, the strength of the outermost cylinder of the upper lattice plate is increased, so that its seismic resistance is improved.
以下、本考案を実施例によって詳述する。Hereinafter, the present invention will be explained in detail with reference to examples.
第４図１よび第５図に釦いて、前述の図と同一符号を用
いているものは同一の構成を示す３図に釦いて、上部格
子板４ａは外周円筒４１ａ＜必要な所定の厚みを得る為
に一体削出し構造になっている。4. In FIGS. 1 and 5, the same reference numerals as in the previous figures refer to FIG. 3, which shows the same structure. It has a one-piece structure to obtain the desired effect.
外周円筒４１ａには傾斜溝４２を設ける。傾斜溝４２は
上方へ行く程溝が深くなっている。An inclined groove 42 is provided in the outer circumferential cylinder 41a. The inclined groove 42 becomes deeper as it goes upward.
上部格子板４ａを固定するに際しては、先ず格子板４ａ
をシュラウド２上に置き、しかる後、傾斜溝に沿ってク
サビ６ａをジュランドブロック５ａとの間に挿入する。When fixing the upper grid plate 4a, first
is placed on the shroud 2, and then a wedge 6a is inserted between it and the Jurand block 5a along the inclined groove.
クサビ６ａはジュランドブロック５ａと当接する側が鉛
直面を形威し、円筒４１ａと当接する側が傾斜面を形成
する。The wedge 6a forms a vertical surface on the side that contacts the Jurand block 5a, and forms an inclined surface on the side that contacts the cylinder 41a.
クサビ６ａ挿入後、板状のストッパ７ａをボルト８で上
部格子板４ａに固定し、クサビ６ａの脱落を防止する。After inserting the wedge 6a, a plate-shaped stopper 7a is fixed to the upper grid plate 4a with bolts 8 to prevent the wedge 6a from falling off.
本実施例によれば、クサビ６ａの取付けは位置確認が容
易にでき、上部格子板の円筒４１ａの傾斜溝に添って炉
の中心方向に引き上げられ、スプレィスパージャ９と干
渉することなく１段階で取外すことが可能になる。According to this embodiment, the position of the wedge 6a can be easily confirmed, and the wedge 6a is pulled up toward the center of the furnace along the inclined groove of the cylinder 41a of the upper grid plate in one step without interfering with the spray sparger 9. It becomes possible to remove it.
本考案によれば、上部格子板レストレイントの取付、取
外しが極めて容易になり、同時に高耐震構造の上部格子
板を得ることができる。According to the present invention, it becomes extremely easy to attach and remove the upper lattice plate restraint, and at the same time, it is possible to obtain an upper lattice plate with a highly earthquake-resistant structure.
第１図は本考案の一実施例を示す原子炉心の縦断面図、
第２図、第３図は、第１図のＡ部詳細図で従来の上部法
子板レストレイントを示す図、第４図、第５図は、同じ
く第１図のＡ部詳細図で本考案の一実施例になる上部格
子板レストレイントを示す図である。
２・・・シュラウド、４ａ・・・上部格子板、４１ａ・
・・上部格子板外周円筒、４２ａ・・・傾斜溝、５ａ・
・・ジュランドブロック、６ａ・・・クサビ。FIG. 1 is a vertical cross-sectional view of a nuclear reactor core showing an embodiment of the present invention.
Figures 2 and 3 are detailed views of part A in Figure 1, showing the conventional upper brace plate restraint, and Figures 4 and 5 are detailed views of part A in Figure 1, showing the conventional upper law plate restraint. It is a figure which shows the upper grid plate restraint which becomes one Example of a invention. 2... Shroud, 4a... Upper lattice plate, 41a.
... Upper lattice plate outer circumference cylinder, 42a... Inclined groove, 5a.
...Juland block, 6a...wedge.
Claims (1)
上部格子板をシュラウンドに固定する上部格子板レスト
レイントに釦いて、前記上部格子板の最外周を厚内の円
筒で構成すると共にこの円筒の外周の所定の位置に上方
へ向って深い傾斜溝を設け、かつ該傾斜溝に係合してシ
ュラウド側に設けたブロックと前記円筒との間に嵌入さ
れるクサビを設けてなる原子炉の上部格子板レストレイ
ント。A button is attached to an upper grate plate restraint that fixes an upper grate plate installed in the reactor and restrains the lateral movement of the fuel assembly to the shroud, and the outermost periphery of the upper grate plate is constituted by a cylinder within the thickness. Additionally, a deep inclined groove extending upward is provided at a predetermined position on the outer periphery of the cylinder, and a wedge is provided which engages with the inclined groove and is fitted between the block provided on the shroud side and the cylinder. Upper grate plate restraint of a nuclear reactor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1979017787U JPS5812157Y2 (en) | 1979-02-16 | 1979-02-16 | Reactor upper grid plate restraint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1979017787U JPS5812157Y2 (en) | 1979-02-16 | 1979-02-16 | Reactor upper grid plate restraint |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55118196U JPS55118196U (en) | 1980-08-21 |
| JPS5812157Y2 true JPS5812157Y2 (en) | 1983-03-08 |
Family
ID=28843826
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1979017787U Expired JPS5812157Y2 (en) | 1979-02-16 | 1979-02-16 | Reactor upper grid plate restraint |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5812157Y2 (en) |
-
1979
- 1979-02-16 JP JP1979017787U patent/JPS5812157Y2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS55118196U (en) | 1980-08-21 |
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