JPS61118691A - Hanging drum of core for nuclear reactor - Google Patents
Hanging drum of core for nuclear reactorInfo
- Publication number
- JPS61118691A JPS61118691A JP59239478A JP23947884A JPS61118691A JP S61118691 A JPS61118691 A JP S61118691A JP 59239478 A JP59239478 A JP 59239478A JP 23947884 A JP23947884 A JP 23947884A JP S61118691 A JPS61118691 A JP S61118691A
- Authority
- JP
- Japan
- Prior art keywords
- openings
- core
- cylindrical wall
- nuclear reactor
- core suspension
- 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
- Storage Of Web-Like Or Filamentary Materials (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〔発明の技術分野〕
本発明は高速増殖炉における原子炉炉心吊胴に係るもの
である。DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a nuclear reactor core suspension shell in a fast breeder reactor.
高速増殖炉の炉心支持方式として、第３図に示すように
、炉心１を円筒壁を有する炉心吊胴２でルーフスラブ３
より吊り下げて、原子炉容器４内に設置する方式が考え
られている。炉心吊胴２には冷却材６の循環経路確保の
ため円筒壁の円周上に多数の開口部５が配置されている
。第４図は吊胴の円筒容器壁７と数個の開口部５を拡大
した図であるが、円筒の強度上開口部の間隔を一定距離
以上にする必要があることおよび冷却材循環経路である
開口部面積を一定頭以上にＴる必要があることから、開
口部の形状は必然的に図のような円筒軸方向に細長い形
状となる。As shown in FIG. 3, as a core support system for a fast breeder reactor, the reactor core 1 is supported by a roof slab 3 with a core suspension body 2 having a cylindrical wall.
A method is being considered in which the reactor is suspended further and installed inside the reactor vessel 4. A large number of openings 5 are arranged in the core suspension body 2 on the circumference of the cylindrical wall to ensure a circulation path for the coolant 6. FIG. 4 is an enlarged view of the cylindrical container wall 7 and several openings 5 of the hanging body, but due to the strength of the cylinder, the intervals between the openings must be a certain distance or more, and the coolant circulation path Since it is necessary to make the area of a certain opening T greater than a certain value, the shape of the opening inevitably becomes elongated in the cylindrical axis direction as shown in the figure.
このような炉心支持方式の場合、地震に対して次のよう
な問題点を有している。すなわち、炉心の質量が大きい
ため吊胴円筒部には、上下動地震時に軸力、水平方向地
震時に曲げ荷重が生じることになる。このような荷重に
対して、多数の開口部を有する円筒は開口部の存在しな
い円筒に比較し強度の低下が著しく、何らかの開口部の
補強対策を施す必要がある。開口部の形状が円形の場合
には、開口部間隔を一定値以上に保ち、かつ、第５図に
示すように、開口部周辺の円筒容器壁の肉厚を増大させ
ることが一般的な補強対策として知られている。しかし
、曲率半径の極めて大きい円筒に第４図のような細長い
開口部が多数存在すると、軸方向圧縮力により開口部間
の容器壁があたかも平板のごとき座屈挙ｔａを示すこと
が懸念され、この場合にｔＨ，′ｉ、作来の浦強法では
充分と言えず、何ら力）の対゛策番議す必要がある。This kind of core support system has the following problems with respect to earthquakes. That is, since the mass of the reactor core is large, the cylindrical part of the suspension body is subjected to axial force during vertical motion earthquakes and bending load during horizontal earthquakes. Against such a load, a cylinder with a large number of openings has a significantly lower strength than a cylinder without any openings, and it is necessary to take some kind of reinforcement measure for the openings. When the shape of the opening is circular, general reinforcement is to maintain the interval between the openings above a certain value and to increase the wall thickness of the cylindrical container wall around the opening, as shown in Figure 5. known as a countermeasure. However, if there are many elongated openings as shown in Figure 4 in a cylinder with an extremely large radius of curvature, there is a concern that the container wall between the openings will buckle as if it were a flat plate due to axial compressive force. In this case, the conventional Ura-force method is not sufficient, and it is necessary to take countermeasures.
本発明は上記の従来の多数の細長い開口部をＭする炉心
吊胴の強度上の欠点を改良したものであり、より強贋の
高い原子炉炉心吊胴を提供することを目的とする。The present invention improves the above-mentioned defects in strength of the conventional reactor core suspension shell that has a large number of elongated openings, and aims to provide a nuclear reactor core suspension shell that is more durable.
本発明は多数の・ｒ田長い開口部が円周上に配列された
原子炉炉心吊胴において、開口形状と円形状の補強リン
グを当該開口部をこ挿入し設置した原子炉炉心吊胴で、
補強リングの幅は炉心吊胴の円筒壁の板厚より充分太き
いものとし、補強リングは円筒壁の外側に突出する状態
に設けであることを特徴とする。The present invention relates to a reactor core suspension shell in which a large number of long openings are arranged on the circumference, and a reinforcing ring with a circular shape is inserted into the openings and installed. ,
The width of the reinforcing ring is sufficiently thicker than the plate thickness of the cylindrical wall of the core suspension body, and the reinforcing ring is characterized in that it is provided in a state of protruding to the outside of the cylindrical wall.
本発明により、隣接する開口部間の円筒壁の軸方向荷重
をこ対する座屈耐力を高めることができ、全体的な強度
を向上させた原子炉炉心吊胴を提供できる。According to the present invention, it is possible to increase the buckling strength of the cylindrical wall between adjacent openings against the axial load, and it is possible to provide a nuclear reactor core suspension body with improved overall strength.
〔発−の、実施列〕 ゛
以゛下図面に基づき本発明の一実施例８説明する・＠１
図は本発明に係わる原子炉炉心吊胴の全体図を原子炉容
器等と合せて示した図であり、第２図は本発明に係わる
開口部近傍のイ湾造を示した部分断面図である。[Implementation sequence] Embodiment 8 of the present invention will be explained below based on the drawings.@1
The figure is an overall view of the reactor core suspension shell according to the present invention, together with the reactor vessel, etc., and Figure 2 is a partial cross-sectional view showing the bay structure near the opening according to the present invention. be.
炉心吊胴２の円筒壁の円周上に多数隣接して存在する円
筒軸方向に細長い開口部５の各々に、開口形状と同形状
でかつ幅が円筒壁厚より充分大きい補強リング８が設置
されている。すなわち、補強リングは円筒壁の外側に突
出した構造となっている。この場合、”開口部周囲の円
筒壁厚を大にする従来の補強構造（単５図）に比較して
同量もしくは少ない補強骨で、突出歎を充分大きくする
ことができ、したがって、開口部間円筒壁のみかけ上の
曲げ剛性を大にすることかで全座屈耐力を高めることが
できる。 １A reinforcing ring 8 having the same shape as the opening and having a width sufficiently larger than the thickness of the cylindrical wall is installed in each of the many elongated openings 5 in the axial direction of the cylinder that exist adjacent to each other on the circumference of the cylindrical wall of the core suspension shell 2. has been done. That is, the reinforcing ring has a structure that protrudes to the outside of the cylindrical wall. In this case, the protrusion can be made sufficiently large with the same amount or less reinforcing bone compared to the conventional reinforcing structure that increases the thickness of the cylindrical wall around the opening. The total buckling strength can be increased by increasing the apparent bending rigidity of the cylindrical wall.1
第１図は本発明に係わる原子炉炉心吊胴を使用した原子
炉の縦断面図、鬼２図は本発明に係わる炉心吊胴開口部
の部分断面図、第３図は従来の炉心吊胴を使用した原≠
炉の縦断面図、＠４図は従来の開口部を有する炉心吊胴
円筒部の部分平面図、第５図は従来技術による開口補強
法を示す部分断面図である。
１・・・炉心、２・・・炉心吊胴、３・・・ルーフ争ス
ラブ、４・・・原子炉容器、５・・・開口部、６・・・
冷却材、７・・・炉心吊胴円筒壁、８・・・補強リング
。Figure 1 is a vertical sectional view of a nuclear reactor using a reactor core suspension according to the present invention, Figure 2 is a partial sectional view of the opening of the core suspension according to the present invention, and Figure 3 is a conventional core suspension. Original using ≠
A vertical cross-sectional view of the reactor, Figure 4 is a partial plan view of a cylindrical core suspension body having a conventional opening, and Figure 5 is a partial cross-sectional view showing a conventional opening reinforcement method. DESCRIPTION OF SYMBOLS 1... Reactor core, 2... Core suspension shell, 3... Roof warping slab, 4... Reactor vessel, 5... Opening, 6...
Coolant, 7... Core suspension cylindrical wall, 8... Reinforcement ring.
Claims (1)
口部を有する原子炉炉心吊胴において、円筒壁の外側に
突出する開口形状と同形状の補強リングを当該開口部に
設置したことを特徴とする原子炉炉心吊胴。In a reactor core suspension shell that has a large number of elongated openings distributed along the circumference of the cylindrical wall in the axial direction of the cylinder, a reinforcing ring having the same shape as the openings protruding outside the cylindrical wall is installed in the openings. A nuclear reactor core suspension shell featuring:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59239478A JPS61118691A (en) | 1984-11-15 | 1984-11-15 | Hanging drum of core for nuclear reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59239478A JPS61118691A (en) | 1984-11-15 | 1984-11-15 | Hanging drum of core for nuclear reactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61118691A true JPS61118691A (en) | 1986-06-05 |
Family
ID=17045367
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59239478A Pending JPS61118691A (en) | 1984-11-15 | 1984-11-15 | Hanging drum of core for nuclear reactor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61118691A (en) |
-
1984
- 1984-11-15 JP JP59239478A patent/JPS61118691A/en active Pending
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