JPS5896285A - Neutron source assembly - Google Patents
Neutron source assemblyInfo
- Publication number
- JPS5896285A JPS5896285A JP56193643A JP19364381A JPS5896285A JP S5896285 A JPS5896285 A JP S5896285A JP 56193643 A JP56193643 A JP 56193643A JP 19364381 A JP19364381 A JP 19364381A JP S5896285 A JPS5896285 A JP S5896285A
- Authority
- JP
- Japan
- Prior art keywords
- antimony
- neutron source
- cladding tube
- source assembly
- end plug
- 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
- Paper (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】
(1)発明の技術分野
本発明は、Nの冷却材を使用する高速増殖炉の中性子#
I集合体におけるアンチモンl!素の構造の改良に関す
るものである。Detailed Description of the Invention (1) Technical Field of the Invention The present invention relates to a fast breeder reactor using N as a coolant.
Antimony l in the I aggregate! It concerns the improvement of the elementary structure.
(2)従来技術
中性子源集合体は、筒状をなす本体の下部にエントラン
スノズルを設け、上記、本体の内にオーステナイト系ス
テンレス鋼(以下8U8鋼と呼ぶ)による保護管で被覆
されたSbl!J!(3)を内蔵したものである。また
エントランスノズルは−Na冷却材を強制的に循環して
いる炉容器における炉心構造物の低圧プレナムに設けら
れた炉心支持板に挿脱自在に嵌装されている。(2) The prior art neutron source assembly has an entrance nozzle at the bottom of a cylindrical main body, and the main body is covered with a protection tube made of austenitic stainless steel (hereinafter referred to as 8U8 steel). J! (3) is built-in. Further, the entrance nozzle is removably fitted into a core support plate provided in a low-pressure plenum of a core structure in a reactor vessel in which -Na coolant is forcibly circulated.
従来、上記、アンチモン賛票は、ls1図に示すよう、
5b(a)と端栓(b)の溶11 fiA(C)との距
−が非常に′近く製造時において、溶接の入熱により5
b(a)が溶は出す恐れがあった。(sbの融点630
℃)直接、Sbと8US鋼を接触させると高温下におい
ては、8U8鋼が浸食される。従って、 8b(a)が
溶は出せば被覆管(d)は溶けたsbと接触し浸食され
ることlこなる。Conventionally, the above antimony vote was as shown in Figure ls1,
5b (a) and the end plug (b) weld 11 fiA (C) are very close to each other during manufacturing, due to the heat input during welding.
There was a risk that b(a) would dissolve. (sb melting point 630
℃) If Sb and 8US steel are brought into direct contact, the 8U8 steel will erode at high temperatures. Therefore, if 8b(a) melts, the cladding tube (d) will come into contact with the melted sb and be eroded.
また、被覆管(d)と栓4& (b)のすきまへ8b(
a)が入り込み、溶接部(C)にも悪影響をおよぼすこ
とになる。In addition, 8b (
a) will enter and have an adverse effect on the welded part (C).
このような伏線で原子炉内へ挿荷され、もし被覆管(d
)から8 b (a)が流出すれば、この流出したsb
が原子炉冷却材としてのNgとよく反応し、熱を発生し
て反応生成物としての合金を生成する。そして、この反
応生成物は、エントランスノズルの流入孔を通して永久
構造物である炉心構造物の低圧プレナム内にそのまま落
下する。しかもこの反応生成物は、幡下後も継続して熱
的反応をするので、上記、低圧プレナム直下の炉心構成
要素で発熱が続く績果となり、これに起因して炉心構造
物に悪影響t−およぼすことになる。さらに上記反応生
成物O一部は、Na冷却材と一諸に他へ移送される恐れ
もあり、これらが他の炉心構成要素の間隙に流入してN
a冷却材OIt路を閉轟したり、または、流量、流速に
悪影響を与える恐れがある。If the cladding tube (d
) from 8 b (a), this leaked sb
reacts well with Ng as a reactor coolant, generating heat and forming an alloy as a reaction product. This reaction product then falls directly into the low-pressure plenum of the core structure, which is a permanent structure, through the inlet hole of the entrance nozzle. In addition, this reaction product continues to undergo a thermal reaction even after it has been removed, resulting in continued heat generation in the core components directly below the low-pressure plenum, which has an adverse effect on the core structure. It will cause a lot of trouble. Furthermore, there is a possibility that some of the reaction products O may be transferred together with the Na coolant, and these may flow into the gaps between other core components and the N
a) There is a possibility that the coolant OIt passage may be blocked or the flow rate and flow velocity may be adversely affected.
(3)発明の目的
本発明は、上記点に対してなされたものであり、jIl
IIfi111II豪廊と8bとのギャップをもたせる
よう端栓に癖を付け、さらに中央部に出ばりを設け、ま
た被覆管とのギャップを保つように被覆管内面にディン
プルを設け、これにより、#縁時の入熱によるsbの溶
融を防止し、さらに原子炉内での高温下における被覆管
の侵食を防止し、アンチモンll!素の健全性を保つよ
うにした中性子#集合体を提供することを目的とするも
のである。(3) Purpose of the Invention The present invention has been made in view of the above points, and
IIfi111II The end plug is shaped to create a gap between the corridor and 8b, a bulge is provided in the center, and a dimple is provided on the inner surface of the cladding tube to maintain the gap with the cladding tube. It prevents sb from melting due to heat input during the reactor, and also prevents erosion of the cladding tube under high temperatures inside the reactor. The purpose is to provide a neutron aggregate that maintains its original integrity.
(4)発明の構成 以下、本発明の一実施例についてa#4する。(4) Structure of the invention Hereinafter, one embodiment of the present invention will be described as #4.
第1図において符号lは、中性子源における筒状をなす
本体であって、この本体(1)内にはSUS鋼材による
保護管(2)で被覆されたアンデモ241票(3)が内
蔵されており、上記、本体(1)の下部にはエントラン
スノズル(4)が炉心支持板(5)に挿脱自在に嵌装さ
れている。In Fig. 1, the symbol l is the cylindrical main body of the neutron source, and inside this main body (1) there is built-in an Andemo 241 vote (3) covered with a protective tube (2) made of SUS steel. An entrance nozzle (4) is removably fitted into the core support plate (5) at the bottom of the main body (1).
sbI!素(3)は、83図に示すように細長い円筒状
の被覆管(6)と、この被覆管(6)内に挿入される5
b(7)と被覆管(6)の開口肩を密閉する。1lil
l& (8)とから構成されている。sbI! As shown in Figure 83, the element (3) consists of an elongated cylindrical cladding tube (6) and a 5-piece tube inserted into the cladding tube (6).
b (7) and the opening shoulder of the cladding tube (6) are sealed. 1 lil
It is composed of l & (8).
m 栓(8) ハ、411覆’t(6)トm!Ij、8
tL、そom像sa’aと8b(7)とのギャップをあ
けるために環状の溝(l′lJが付けられており、さら
に中央部のみがある程度のギャップをもって設けである
。m Stopper (8) Ha, 411 cover't (6) To m! Ij, 8
An annular groove (l'lJ) is provided to create a gap between the images tL and 8b (7), and only the central portion is provided with a certain gap.
被覆管(6)内面には、被覆管(6)と8b(7)Oギ
ャップを一定に保つためのディンプル(9)が設けられ
ており、被覆管(6)と8 b (7)を接触させるこ
とな(8b(7)を保持している。A dimple (9) is provided on the inner surface of the cladding tube (6) to keep the O gap between the cladding tube (6) and 8b (7) constant, and to keep the cladding tube (6) and 8b (7) in contact. It holds (8b(7)).
ディンプル(9)は、上記、被覆f(6)と端栓(8)
の溶接による熱影響のおよぼさない、ある距離を保って
具備されている。また第4図、185図に示すように断
熱材μ冴を被覆管(6)と8b(7)の間に充填し、ギ
ャップを一定に保ってもよい。The dimple (9) is the above-mentioned covering f (6) and end plug (8).
It is installed at a certain distance away from the heat effect due to welding. Alternatively, as shown in FIGS. 4 and 185, a heat insulating material may be filled between the cladding tube (6) and 8b (7) to keep the gap constant.
(5)発明の作用
8bl!1+1、t?、77、被dtf(6)li栓(
8)カm接され、#績されていない他層から8b(7)
が挿入され、最後にHeチャンバー内で他方の端栓がm
接される。(5) Effect of invention 8bl! 1+1, t? , 77, DTF (6) Li plug (
8) 8b (7) from other layers that have been touched and not touched
is inserted, and finally the other end plug is inserted into the He chamber.
be touched.
この時、従来の構造であれば、Sbは、溶接部からの距
離が近く、被覆管との接触もあるため、溶接による入熱
は、端栓から直接、8bに伝わり、融点が630℃とき
わめて低い8bは溶は出してしまう。At this time, in the conventional structure, Sb is close to the weld and comes in contact with the cladding, so the heat input from welding is transmitted directly from the end plug to 8b, and the melting point is 630°C. Extremely low 8b will dissolve.
また411覆管と接触している部分があるため、被覆管
からの熱の伝導により、やはり溶は出す原因となる。Also, since there is a part that is in contact with the 411 cladding, heat conduction from the cladding also causes melting.
本発明によれば、端栓(8)の形状は、ギャップをあけ
るために溝が付けられてぷり、さらにda部αυとの距
離かはなれているので熱が伝わりにくい構造であり、8
b(7)が溶は出すことはないdまた、JIE4′図第
5図図示5図ようにS b (7)と端役(8)とのW
!触部にメツシュ等の断熱材0を充填することにより、
断熱性(13を向上することができ、さらに熱が伝わり
にくい構造となる。According to the present invention, the shape of the end plug (8) is grooved to create a gap and is further away from the da part αυ, so that heat is not easily transmitted.
b (7) will not emit any melt d Also, as shown in Figure 5 of JIE 4', W between S b (7) and minor role (8)
! By filling the contact area with insulation material such as mesh,
The heat insulation properties (13) can be improved, and the structure becomes more difficult for heat to transfer.
被覆管(6)からの熱伝導は一1被覆管(6)内面に設
けたディンプル(9)により、被撞管(6)とs b
(7)のギャップ、を一定に保ち、空間部がHeのガス
断熱層となるために、はとんどない。ここで、ディンプ
ル(9)のかわりに断熱材を充填してもよい。ディンプ
ル(9)と5b(7)は接触しているが、ディンプル(
9)は、#豪による熱影響のおよぼさない距−をおいて
設けられているため、はとんど熱は伝わらない。また、
被覆管(6)と8b(7)との接触は全くなくなるため
、製造時の溶接の入熱による溶融を防止するだけでなく
、原子炉内での高温下における侵食も防止することがで
きる。Heat conduction from the cladding tube (6) is conducted between the cladding tube (6) and the s b by the dimples (9) provided on the inner surface of the cladding tube (6)
The gap in (7) is kept constant and the space becomes a He gas heat insulating layer, so there is no problem. Here, a heat insulating material may be filled instead of the dimples (9). Dimple (9) and 5b (7) are in contact, but the dimple (
9) is located at a distance away from the thermal influence of #Australia, so almost no heat is transmitted. Also,
Since there is no contact between the cladding tube (6) and 8b (7), it is possible not only to prevent melting due to heat input during welding during manufacturing, but also to prevent corrosion at high temperatures in the reactor.
従って、sb費累の健全性が保たれ、8bは流出するこ
とはなくなり、永久構造物としての炉心構造物が保たれ
、原子炉全体としての健全性が保たれることになる。Therefore, the soundness of the sb cost is maintained, 8b no longer flows out, the reactor core structure as a permanent structure is maintained, and the soundness of the reactor as a whole is maintained.
(6)発明の詳細
な説明したように、本発明によれば、端栓の濤Il!部
と、Sb間とにギャップをもたせるよう配置したOでS
*時におけるsbの溶融を防止することができるととも
に、高温下に2ける被覆管の侵食を防止することができ
るので、Sb要素の健全性が保たれ、炉心構造物の健全
性を維持することができ、ひいては原子炉全体の健全性
を保つことができ6G(6) As described in detail of the invention, according to the present invention, the end plug can be removed! S with O arranged so as to leave a gap between Sb and Sb.
*It is possible to prevent the melting of Sb at high temperatures, and also to prevent corrosion of the cladding tube under high temperatures, so the integrity of the Sb element is maintained and the integrity of the core structure is maintained. 6G, which in turn can maintain the integrity of the entire reactor.
IIsllglは、従来のアンチモン要素の断面図、第
2図は、本発明の中性子源系合体の断面図、s3図は!
112図のアンチモン要素0111?面図、第4図。
JIb図は5113図の他の実施例を示す断面図である
。
(2)・・・保護管
(6)・・・普榎管
(7)・・・アンチモン
(8)・・・端栓
αり・・・溝
q3・・・断熱材
(7317)代理人弁堺士 則近憲佑(ほか1名)第2
図
第1図
第4図
第5図IIsllgl is a cross-sectional view of a conventional antimony element, Figure 2 is a cross-sectional view of the neutron source system combination of the present invention, and Figure s3 is!
Antimony element 0111 in Figure 112? Front view, Figure 4. Figure JIb is a sectional view showing another example of Figure 5113. (2)...Protective pipe (6)...Public tube (7)...Antimony (8)...End plug α-ring...Groove q3...Insulating material (7317) Agent valve Sakaishi Kensuke Norichika (and 1 other person) 2nd
Figure 1 Figure 4 Figure 5
Claims (2)
アンチモンと、前記保護管の開口肩部に溶着される4橙
とを有する中性子源集合体において、前記端栓には、ア
ンチンモンとの接触領域と保護管との溶着部間#cll
状溝を設けたことを49黴とする中性子源集合体。(1) In a neutron source assembly having a cylindrical protection tube, antimony provided in the protection tube, and four oranges welded to the opening shoulder of the protection tube, the end plug includes antimony and antimony. #cll between the contact area and the welded part of the protective tube
A neutron source assembly with a 49-shaped groove.
を特徴とする特杵請求の範囲#I1項記載の中性子g集
合体。(2) The neutron g aggregate according to claim #I1, characterized in that a heat insulating material is filled between the end plug and the antimony.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56193643A JPS5896285A (en) | 1981-12-03 | 1981-12-03 | Neutron source assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56193643A JPS5896285A (en) | 1981-12-03 | 1981-12-03 | Neutron source assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5896285A true JPS5896285A (en) | 1983-06-08 |
Family
ID=16311348
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56193643A Pending JPS5896285A (en) | 1981-12-03 | 1981-12-03 | Neutron source assembly |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5896285A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3612450A1 (en) * | 1985-04-17 | 1986-10-23 | Orient Watch Co., Ltd., Tokio/Tokyo | WRISTWATCH CASE |
-
1981
- 1981-12-03 JP JP56193643A patent/JPS5896285A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3612450A1 (en) * | 1985-04-17 | 1986-10-23 | Orient Watch Co., Ltd., Tokio/Tokyo | WRISTWATCH CASE |
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