JPS60147691A - Fast breeder reactor - Google Patents
Fast breeder reactorInfo
- Publication number
- JPS60147691A JPS60147691A JP59002653A JP265384A JPS60147691A JP S60147691 A JPS60147691 A JP S60147691A JP 59002653 A JP59002653 A JP 59002653A JP 265384 A JP265384 A JP 265384A JP S60147691 A JPS60147691 A JP S60147691A
- Authority
- JP
- Japan
- Prior art keywords
- inner cylinder
- reactor
- liquid metal
- fast breeder
- reactor vessel
- 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
- Heat-Exchange Devices With Radiators And Conduit Assemblies (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】
本発明は冷却材の高温液体金属が原子炉容器の下方から
炉心を通って上方へ貫ぴtする高速増殖炉の改良に関す
るものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a fast breeder reactor in which the coolant, hot liquid metal, penetrates from the bottom of the reactor vessel upward through the reactor core.
従来の前記高速増殖炉を第1.2.6図により説明する
と、(1)が原子炉容器壁、(2)が炉心(図示せず)
の上方を取り囲んで上記原子炉容器壁(1)との間に緩
衝領域を形成する内筒、(3)が低温の液体金属、(4
)(5)が高温の液体金属であり、高速増殖炉において
、運転時に原子炉がトリップ(主核反応が停止)して、
出力が低下すると、冷却材として使用している液体金属
の熱容量が小さいために、液体金属の温度が急激に変化
する。この液体金属の急激な温度変化が原子炉容器壁(
1)に加わると、原子炉容器の構造相としての熱容量が
大きいために、熱応答が遅れて、原子炉容器壁(1)に
大きな熱応力が発生しやすい。そこでこのような急激な
熱過度の加わる可能性のある個所に、内筒(2)を設置
して、原子炉容器壁(1)に急激な熱過度を加えないよ
うにしている。To explain the conventional fast breeder reactor with reference to Figure 1.2.6, (1) is the reactor vessel wall, and (2) is the reactor core (not shown).
an inner cylinder surrounding the upper part and forming a buffer area between the reactor vessel wall (1); (3) a low-temperature liquid metal;
)(5) is a high-temperature liquid metal, and in a fast breeder reactor, the reactor trips (the main nuclear reaction stops) during operation.
When the output decreases, the temperature of the liquid metal changes rapidly because the heat capacity of the liquid metal used as a coolant is small. This rapid temperature change of the liquid metal causes the reactor vessel wall (
1), the heat capacity as a structural phase of the reactor vessel is large, so the thermal response is delayed and large thermal stress is likely to occur in the reactor vessel wall (1). Therefore, an inner cylinder (2) is installed at a location where such a sudden excessive heat is likely to be applied to prevent the sudden excessive heat from being applied to the reactor vessel wall (1).
しかし熱的成層化現象(ストン)が生じると、上側に密
度の低い高温液体金属(4)、下側に密度の高い低温液
体金属(3)か分離して、第2図の状態で安定する。と
ころがこのとき、内筒(2)と原子炉容器壁(1)との
間の液体金A (5)か高温のままであり、内筒(2)
の内側の低温液体金属(3)との密度差の関係から(内
筒(2)の内側の低温液体金属(3)の方が密度が大き
いことから)、内筒(2)の下側から外側へ低温液体金
属(3)が浸入して、内筒(2)の外側の高温液体金属
(5)がピストン式に内筒(2)の上側から内筒(2)
の内側へ押し出される(第6図の矢印参照)。However, when a thermal stratification phenomenon (stone) occurs, the low-density high-temperature liquid metal (4) on the upper side and the high-density low-temperature liquid metal (3) on the lower side separate and become stable in the state shown in Figure 2. . However, at this time, the liquid gold A (5) between the inner cylinder (2) and the reactor vessel wall (1) remained at high temperature, and the inner cylinder (2)
From the lower side of the inner cylinder (2), from the relationship of the density difference with the low temperature liquid metal (3) inside the inner cylinder (2) (because the density of the low temperature liquid metal (3) inside the inner cylinder (2) is higher). The low-temperature liquid metal (3) enters the outside, and the high-temperature liquid metal (5) on the outside of the inner cylinder (2) moves from the top of the inner cylinder (2) into the inner cylinder (2) in a piston style.
(See the arrow in Figure 6).
これにより、内筒(2)の外側でスト2が再び形成され
て、内筒(2)が本来の熱衝撃緩和作用を果さなくなる
という問題があった。This causes the problem that the strike 2 is formed again on the outside of the inner cylinder (2), and the inner cylinder (2) no longer performs its original thermal shock mitigation function.
本発明は前記の問題点に対処するもので、冷却材の高温
液体金属が原子炉容器の下方から炉心を通って上方へ貫
流する高速増殖炉において、前記炉心の上方を取り囲ん
で前記原子炉容器の内面との間に緩衝領域を形成する内
筒な有し、同内筒の上端を液体金属液面からカバーガス
空間部に突出させたことを特徴とする高速増殖炉に係り
、その目的とする処は、原子炉容器壁に厳しい熱過度を
加えないようにできて、原子炉容器壁の構造の健全性を
確保できる改良された高速増殖炉を供する点にある。The present invention addresses the above-mentioned problems in a fast breeder reactor in which a high-temperature liquid metal coolant flows upwardly through the reactor core from below the reactor vessel. A fast breeder reactor is characterized in that the reactor has an inner cylinder that forms a buffer region between the inner surface of the reactor and the inner cylinder, and the upper end of the inner cylinder projects from the liquid metal level into the cover gas space, and the purpose of the reactor is The object of the invention is to provide an improved fast breeder reactor that can avoid severe thermal overload on the reactor vessel wall and ensure the structural integrity of the reactor vessel wall.
次に本発明の高速増殖炉を第4図に示す一実施例により
説明すると、(1)が原子炉容器壁、(2つが炉心(図
示せず)の上方を取り囲んで上記原子炉容器壁(1)と
の間に緩衝領域を形成する内筒、(3)が低温の液体金
属、(4)(5)が高温の液体金属、(6)がカバーガ
ス空間部で、上記内筒(2つの上端が液体金属液面から
カバーガス空間部(6)に突出している。Next, the fast breeder reactor of the present invention will be described with reference to an embodiment shown in FIG. 1), (3) is a low-temperature liquid metal, (4) and (5) are high-temperature liquid metals, and (6) is a cover gas space; One upper end protrudes from the liquid metal level into the cover gas space (6).
次に前記高速増殖炉の作用を説明する。熱的成層化現象
(スト2)が生じると、すでに述べたように上側に密度
の低い高温液体金属(4)、下側に密度の高い低温液体
金属(3)が分離して、第2図の状態で安定する。とこ
ろがこのとき、内筒(2つと原子炉容器壁(1)との間
の液体金属(5)が高温のままであり、内筒(2つの内
側の低温液体金属(3)との密度差の関係から(内筒(
2つの内側の低温液体金属(3)の方が密度が大きいこ
とから)、内筒(2つの下側から外側へ低温液体金属(
3)が浸入して、内筒(2つの外側の高温液体金属(5
)がピストン式に内筒(2つの外側を上方へ押し上げら
れて、内筒(2つの内側へ押し出されようとする。しか
じ内筒(2つの上端は液体金属液面からカバーガス空間
部(6)に突出しており、内筒(2りの外側の高温液体
金属(5)の液面が内筒(2つの内側の液体金属(3)
(4)の液面よりも高(なり、この高くなった分のヘッ
ド差(位置エネルギー)により、低温液体金属(3)が
内筒(2つの下側から外側へ流れ込まなくなって、第4
図の状態で安定する。なおこのとき、内筒(2つの外側
下部に一部の低温液体金属(3)が流れ込むが、そこは
熱の衝撃緩和を必要とする部位(ノズル部とか溶接部)
から離れているため、特に問題はない。Next, the operation of the fast breeder reactor will be explained. When the thermal stratification phenomenon (Strat 2) occurs, as mentioned above, the low-density high-temperature liquid metal (4) on the upper side and the high-density low-temperature liquid metal (3) on the lower side are separated, as shown in Figure 2. stabilizes in the state of However, at this time, the liquid metal (5) between the inner cylinder (two inner cylinders and the reactor vessel wall (1)) remains at a high temperature, and the density difference between the inner cylinder (two inner cold liquid metal (3)) From the relationship (inner cylinder (
(Because the density of the low-temperature liquid metal (3) on the inside of the two is higher), the inner cylinder (low-temperature liquid metal (3) from the bottom of the two to the outside)
3) penetrates into the inner cylinder (the two outer hot liquid metals (5
) is pushed upward in a piston-like manner by the inner cylinder (two outer sides), and is about to be pushed out into the inner cylinder (two inner cylinders). 6), and the liquid level of the outer high temperature liquid metal (5) of the inner cylinder (2) is higher than that of the inner cylinder (2 inner liquid metal (3)).
(4), and due to the head difference (potential energy) corresponding to this height, the low temperature liquid metal (3) no longer flows from the bottom of the two to the outside, and the fourth
It stabilizes in the state shown in the figure. At this time, some of the low-temperature liquid metal (3) flows into the inner cylinder (the lower part of the two outer parts), but it is in areas that require thermal shock mitigation (such as the nozzle and welding parts).
Since it is far away, there is no particular problem.
本発明は前記のように冷却材の高温液体金属が原子炉容
器の下方から炉心を遡って上方へ貫流する高速増殖炉に
おいて、前記炉心の上方を取り囲んで前記原子炉容器の
内面との間に緩衝領域を形成する内筒を有し、同内筒の
上端を液体金属液面からカバーガス空間部に突出させて
、前記の作用を行なうようにしたので、原子炉容器壁特
にノズル部や溶接部の熱衝撃緩和を必要とする部位に厳
しい熱過度を加えないようにできて、原子炉容器壁の構
造の健全性を確保できる効果がある。The present invention provides a fast breeder reactor in which high-temperature liquid metal as a coolant flows from the bottom of the reactor vessel back up to the top of the reactor vessel. It has an inner cylinder that forms a buffer region, and the upper end of the inner cylinder protrudes from the liquid metal level into the cover gas space to perform the above-mentioned function. This has the effect of ensuring the structural integrity of the reactor vessel wall by preventing excessive heat from being applied to areas that require thermal shock mitigation.
筒(2つの外側へ減れ込みに<<シた他の実施例で、こ
の実施例でも内筒(2つの上端が液体金属液面からカバ
ーガス空間部(6)に突出しており、前記と同様の作用
効果を達成できる。In another embodiment, the inner cylinder (two upper ends protrude from the liquid metal level into the cover gas space (6), similar to the above). can achieve the following effects.
以″上本発明を実施例について説明したが、勿論本発明
はこのような実施例にだけ局限されるものではなく、本
発明の精神を逸脱しない範囲内で種々の設計の改変を施
しうるものである。Although the present invention has been described above with reference to embodiments, it goes without saying that the present invention is not limited to these embodiments, and that various design changes can be made without departing from the spirit of the present invention. It is.
第1図は従来の高速増殖炉の原子炉容器及び内筒な示す
斜視図、第2図は第1図の矢印1部分の拡大縦断側面図
、第6図はその作用説明図、第4図は本発明に係る高速
増殖炉の原子炉容器及び内筒の一実施例を示す縦断側面
図、第5図は他の実施例を示す縦断側面図である。
(1)・・・原子炉容器壁、(2つ・・・内筒、(3)
(4)(5)・・・液体金属、(6)・・・カバーガス
空間部。
復代理人 弁理士開本重文
外3名
第5図Fig. 1 is a perspective view showing the reactor vessel and inner cylinder of a conventional fast breeder reactor, Fig. 2 is an enlarged vertical sectional side view of the arrow 1 part in Fig. 1, Fig. 6 is an explanatory diagram of its operation, Fig. 4 FIG. 5 is a longitudinal side view showing one embodiment of a reactor vessel and inner cylinder of a fast breeder reactor according to the present invention, and FIG. 5 is a longitudinal side view showing another embodiment. (1) Reactor vessel wall, (2) Inner cylinder, (3)
(4) (5)...Liquid metal, (6)...Cover gas space. Sub-agents: 3 patent attorneys and non-Kaihon important literary figures Figure 5
Claims (1)
って上方へ貫流する高速増殖炉において、前記炉心の上
方を取り囲んで前記原子炉容器の内面との間に緩衝領域
を形成する内筒な有し、同内筒の上端を液体全域液面か
らカバーガス空間部に突出させたことを特徴とする高速
増殖炉。In a fast breeder reactor in which high-temperature liquid metal as a coolant flows from below the reactor vessel upward through the reactor core, an inner cylinder surrounds the upper part of the reactor core and forms a buffer region between it and the inner surface of the reactor vessel. A fast breeder reactor characterized in that the upper end of the inner cylinder protrudes from the surface of the entire liquid region into the cover gas space.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP59002653A JPS60147691A (en) | 1984-01-12 | 1984-01-12 | Fast breeder reactor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP59002653A JPS60147691A (en) | 1984-01-12 | 1984-01-12 | Fast breeder reactor |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS60147691A true JPS60147691A (en) | 1985-08-03 |
Family
ID=11535309
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP59002653A Pending JPS60147691A (en) | 1984-01-12 | 1984-01-12 | Fast breeder reactor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS60147691A (en) |
-
1984
- 1984-01-12 JP JP59002653A patent/JPS60147691A/en active Pending
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