JP3048010B2 - Divertor cooling device - Google Patents
Divertor cooling deviceInfo
- Publication number
- JP3048010B2 JP3048010B2 JP3172139A JP17213991A JP3048010B2 JP 3048010 B2 JP3048010 B2 JP 3048010B2 JP 3172139 A JP3172139 A JP 3172139A JP 17213991 A JP17213991 A JP 17213991A JP 3048010 B2 JP3048010 B2 JP 3048010B2
- Authority
- JP
- Japan
- Prior art keywords
- cooling
- diverter
- blanket
- vacuum vessel
- cooling system
- 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 - Fee Related
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
- Y02E30/10—Nuclear fusion reactors
Landscapes
- Plasma Technology (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、核融合装置等のダイバ
ータ冷却系において、冷却系内の放射性物質に対する放
射線しゃヘい対策上効果的な、ダイバータ冷却装置に関
する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a divertor cooling system, which is effective in a divertor cooling system for a nuclear fusion device or the like, in taking measures against radioactive substances in the cooling system.
【０００２】[0002]
【従来の技術】従来のダイバータの例は、プラズマ・核
融合学会誌“核融合研究（ＶＯＬ．６５／ＮＯ．２ Ｆ
ｅｂ．１９９１)”に記載のように、冷却管等の構造材
とその表面にロー付けされるアーマ材とで構成されてお
り、冷却管内を流れる冷却水によりダイバータの表面温
度を１０００℃以下に冷却する構造となっていた。2. Description of the Related Art An example of a conventional diverter is described in the Journal of Plasma and Fusion Research, “Fusion Research (VOL.65 / NO.2F).
eb. 1991) ", is composed of a structural material such as a cooling pipe and an armor material brazed to the surface thereof, and the surface temperature of the diverter is cooled to 1000 ° C. or less by cooling water flowing in the cooling pipe. Had a structure.
【０００３】[0003]
【発明が解決しようとする課題】核融合装置のダイバー
タは水冷されているが、この冷却水中の酸素16Ｏはダイ
バータを冷却する際に真空容器内で中性子の照射を受け
るため以下に示す反応により放射化され、16Ｎになる。The divertor of the fusion device is water-cooled, but the oxygen 16 O in the cooling water is irradiated with neutrons in a vacuum vessel when the diverter is cooled. Activated to 16 N.
【０００４】 16Ｏ＋ｎ → 16Ｎ＋1Ｈ …（化１）16 Ｎは６.２ ＭｅＶとエネルギの高いガンマ線を放出す
る放射性核種であるため、ダイバータ冷却系の真空容器
外に設置される配管・機器にはその放射線を遮蔽するた
め、多量の遮蔽物量が必要となる。 16 O + n → 16 N + 1 H (Formula 1) Since 16 N is a radionuclide that emits gamma rays having a high energy of 6.2 MeV, piping and equipment installed outside the vacuum vessel of the divertor cooling system Requires a large amount of shielding to shield the radiation.
【０００５】本発明の目的はダイバータ冷却水中の主要
な放射線線源である16Ｎによる真空容器外に設置された
ダイバータ冷却設備の配管・機器まわりのしゃヘい構造
物の物量を大幅に低減し、プラントコストの低減スペー
スの確保を図るため、放射性線源の発生側である真空容
器内のダイバータ冷却系の構成につき改良を行い、真空
容器外へ持ち出される16Ｎのインベントリ量を大幅に低
減させる事を可能とするに好適なダイバータ冷却システ
ムを提供することにある。SUMMARY OF THE INVENTION It is an object of the present invention to significantly reduce the volume of a shielding structure around piping and equipment of a divertor cooling facility installed outside a vacuum vessel by 16 N which is a main radiation source in divertor cooling water. , in order to ensure the reduction space plant cost, it made improvements per configuration of the diverter cooling system in the vacuum chamber is a generation side of the radioactive sources, significantly reducing the inventory amount of 16 N to be taken out into the vacuum vessel outside It is an object of the present invention to provide a diverter cooling system suitable for making this possible.
【０００６】[0006]
【課題を解決するための手段】本発明はダイバータ冷却
水中の16Ｎからの放射線を低減するため、16Ｎの半減期
が約７秒という、減衰特性に着目した以下の手段により
構成される。Since the present invention SUMMARY OF] is to reduce the radiation from 16 N diverter cooling water, that the half-life of 16 N of approximately 7 seconds, and by the following means focusing on the attenuation characteristics.
【０００７】ダイバータを冷却したのち、ダイバータ冷
却系の冷却水は、真空容器内で、ダイバータ冷却系の出
口配管とブランケット冷却系の入口配管とを結ぶ配管を
経由し、ブランケット冷却系へ導かれる。系統構成にす
ることにより、ダイバータ冷却水中の16Ｎの減衰時間を
確保し、Ｎ16の量を低減可能とするシステムを提供す
る。After cooling the divertor, the cooling water of the divertor cooling system is guided to the blanket cooling system in the vacuum vessel via a pipe connecting the outlet pipe of the divertor cooling system and the inlet pipe of the blanket cooling system. By providing a system configuration, there is provided a system capable of securing a decay time of 16 N in the divertor cooling water and reducing the amount of N 16 .
【０００８】[0008]
【作用】本発明では、ダイバータを冷却し、その際、中
性子の照射を受け、16Ｏが放射化されて生成された16Ｎ
を多量に含むダイバータ冷却系の冷却水は、真空容器内
でそのままブランケット冷却系に接続された配管を経由
し、ブランケットの冷却を行った後、ブランケット冷却
系出口配管を経由して真空容器外へ導かれる。ダイバー
タ内で生成された冷却水中の16Ｎはブランケットを冷却
している間に、時間による減衰により十分低減され、こ
のためダイバータ冷却系の遮蔽物量を削減することが可
能となる。According to the present invention, the diverter is cooled, time, irradiated with neutrons, 16 O is 16 N produced are radioactivated
The cooling water of the divertor cooling system containing a large amount of water passes through the piping connected to the blanket cooling system as it is in the vacuum vessel, cools the blanket, and then goes out of the vacuum vessel through the blanket cooling system outlet piping. Be guided. The 16 N in the cooling water generated in the divertor is sufficiently reduced by the decay with time while cooling the blanket, so that the amount of shielding in the divertor cooling system can be reduced.
【０００９】[0009]
【実施例】本発明の一実施例を図１により説明する。図
１は核融合炉の断面図である。真空容器１内のプラズマ
２周辺の磁力線の形状を工夫し、外に逃げ出したプラズ
マが、直接、近くの壁に当らないように真空排気部３に
導くための装置であるダイバータ４は水冷されている。
ダイバータ４を冷却する際に真空容器内で中性子により
放射化された16Ｎを含む冷却水は、真空容器１内でダイ
バータ冷却系出口配管５とブランケット冷却系入口配管
６を結ぶ配管７を経由してブランケット冷却系にはい
り、ブランケット８内を通過し、冷却水中の16Ｎが減衰
するための時間を確保した後、真空容器１外へ導かれ、
熱交換器９で熱交換を行った後、再び、ダイバータ４を
冷却するため真空容器内へ循環される。本実施例ではダ
イバータ冷却系の16Ｎを多量に含んだ冷却水が真空容器
内のブランケット冷却系内を流れることになるが、真空
容器の外側にはプラズマ２から放出される放射線をしゃ
へいするためのしゃヘい体１０があり、このしゃヘいに
より冷却水中の16Ｎから放出されるガンマ線もしゃヘい
できるため、新たなしゃヘいの追加は不要となる。図２
にダイバータ出口における冷却水中の16Ｎのインベント
リを１とした場合のブランケット冷却系の真空容器出口
における16Ｎインベントリとダイバータ出口からそこま
での所要時間の関係を示す。FIG. 1 shows an embodiment of the present invention. FIG. 1 is a sectional view of a nuclear fusion reactor. The shape of the magnetic field lines around the plasma 2 in the vacuum vessel 1 is devised, and the diverter 4 which is a device for guiding the plasma escaping to the outside to the vacuum exhaust unit 3 so as not to directly hit a nearby wall is cooled by water. I have.
The cooling water containing 16 N activated by neutrons in the vacuum vessel when cooling the divertor 4 passes through the pipe 7 connecting the divertor cooling system outlet pipe 5 and the blanket cooling system inlet pipe 6 in the vacuum vessel 1. After entering the blanket cooling system, passing through the blanket 8 and securing time for the 16 N in the cooling water to decay, it is guided out of the vacuum vessel 1,
After performing heat exchange in the heat exchanger 9, the diverter 4 is circulated again into the vacuum vessel to cool it. In the present embodiment, the cooling water containing a large amount of 16 N of the divertor cooling system flows in the blanket cooling system in the vacuum vessel, but the radiation emitted from the plasma 2 is shielded outside the vacuum vessel. There is Noshaheitai 10, since it gamma replicated fence is released from 16 N of the cooling water by the shielding wall, addition of new Nashahei is unnecessary. FIG.
Indicating the time required relationship from 16 N inventory and diverter outlet in the vacuum container outlet of the blanket cooling system when an inventory of 16 N in the cooling water in the diverter outlet was 1 to therein.
【００１０】ブランケット冷却系で16Ｎの半減期の約２
〜７倍の約１４〜５０秒程度の滞在時間を確保すること
ができれば、16Ｎのインベントリは約１／４〜１／１０
０となる。これはしゃヘい体の物量に換算すれば、コン
クリートで約２０〜８５ｃｍのしゃヘい厚さの低減とな
る。In the blanket cooling system, the half life of 16 N is about 2
If it is possible to secure a 7-fold to about 14 to 50 seconds to the residence time of, 16 N inventory is about 1 / 4-1 / 10
It becomes 0. This translates into a physical quantity of the shaking body, which is a reduction in shaking thickness of about 20 to 85 cm for concrete.
【００１１】[0011]
【発明の効果】本発明によれば、ダイバータ冷却系の冷
却水中の16Ｎを真空容器内で減衰させることができ、真
空容器外に設置されている。ダイバータ冷却系の機器・
配管類のしゃヘい物量の大幅な低減及びスペースの確保
が可能となる。According to the present invention, the 16 N in the cooling water of the diverter cooling system can be attenuated in a vacuum vessel, which is disposed outside the vacuum vessel. Divertor cooling system equipment
This makes it possible to significantly reduce the amount of piping and the amount of space to be secured and to secure space.
【図１】本発明の一実施例の核融合炉の断面図。FIG. 1 is a cross-sectional view of a nuclear fusion reactor according to one embodiment of the present invention.
【図２】ダイバータの冷却水が真空容器内のブランケッ
ト冷却系内に滞在する時間と冷却水中の16Ｎのインベン
トリの関係を表わす特性図。[Figure 2] characteristic diagram cooling water diverter represents an inventory of relationship 16 N times and the cooling water staying in the blanket cooling system of the vacuum vessel.
１…真空容器、２…プラズマ、３…真空排気部、４…ダ
イバータ、５…ダイバータ冷却系出口配管、６…ブラン
ケット冷却系入口配管、７…配管、８…ブランケット、
９…熱交換器、１０…しゃヘい体。DESCRIPTION OF SYMBOLS 1 ... Vacuum container, 2 ... Plasma, 3 ... Vacuum exhaust part, 4 ... Divertor, 5 ... Divertor cooling system outlet piping, 6 ... Blanket cooling system inlet piping, 7 ... Piping, 8 ... Blanket,
9 ... heat exchanger, 10 ... sick body.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 半田 博之 茨城県日立市幸町三丁目２番１号 日立 エンジニアリング株式会社内 (58)調査した分野(Int.Cl.7，ＤＢ名) G21B 1/00 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Hiroyuki Handa 3-2-1 Samachi, Hitachi City, Ibaraki Prefecture Within Hitachi Engineering Co., Ltd. (58) Field surveyed (Int. Cl. 7 , DB name) G21B 1 / 00
Claims (2)
ラズマが直接近くの壁に当らないように排気部に導くた
めのダイバータと、炉心を取り囲むブランケットと、前
記真空容器のまわりを取り囲むしゃへい体とを備えた核
融合炉において、 前記ダイバータを冷却するダイバータ冷却系と前記ブラ
ンケットを冷却するブランケット冷却系とを前記真空容
器内で配管により接続して、前記ダイバータを冷却した
冷却水により前記ブランケットを冷却する系統構成とし
たことを特徴とするダイバータ冷却装置。 And 1. A vacuum vessel for confining the plasma, and a diverter for guiding the exhaust portion so that the plasma is not hit directly near the wall, a blanket surrounding the reactor core, and a shielding member surrounding around the vacuum container in a fusion reactor having, a blanket cooling system for cooling the blanket and divertor cooling system for cooling the diverter connected by a pipe in the vacuum chamber, and cooling the diverter
A system configuration in which the blanket is cooled by cooling water
A diverter cooling device, characterized in that:
ラズマが直接近くの壁に当らないように排気部に導くた
めのダイバータと、炉心を取り囲むブランケットと、前
記真空容器のまわりを取り囲むしゃへい体とを備えた核
融合炉において、 前記ダイバータを冷却するダイバータ冷却系の出口配管
と前記ブランケットを冷却するブランケット冷却系の入
口配管とを前記真空容器内で接続したことを特徴とする
ダイバータ冷却装置。2. A vacuum vessel for confining plasma, and said vacuum vessel.
Guide the exhaust to the exhaust so that the plasma does not hit the nearby wall directly
Diverter and blanket surrounding the core
A core with a shield surrounding the vacuum vessel
In a fusion reactor, an outlet pipe of a diverter cooling system for cooling the diverter
And a blanket cooling system for cooling the blanket
A diverter cooling device , wherein an outlet pipe is connected in the vacuum vessel .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3172139A JP3048010B2 (en) | 1991-07-12 | 1991-07-12 | Divertor cooling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3172139A JP3048010B2 (en) | 1991-07-12 | 1991-07-12 | Divertor cooling device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0519075A JPH0519075A (en) | 1993-01-26 |
| JP3048010B2 true JP3048010B2 (en) | 2000-06-05 |
Family
ID=15936292
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3172139A Expired - Fee Related JP3048010B2 (en) | 1991-07-12 | 1991-07-12 | Divertor cooling device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3048010B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002325837A (en) | 2000-06-15 | 2002-11-12 | Nefuronetto:Kk | Automatic blood dialyzer system |
-
1991
- 1991-07-12 JP JP3172139A patent/JP3048010B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0519075A (en) | 1993-01-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |