JPH0519075A - Cooling equipment of diverter - Google Patents
Cooling equipment of diverterInfo
- Publication number
- JPH0519075A JPH0519075A JP3172139A JP17213991A JPH0519075A JP H0519075 A JPH0519075 A JP H0519075A JP 3172139 A JP3172139 A JP 3172139A JP 17213991 A JP17213991 A JP 17213991A JP H0519075 A JPH0519075 A JP H0519075A
- Authority
- JP
- Japan
- Prior art keywords
- diverter
- blanket
- cooling
- cooling system
- cooling water
- 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.)
- Granted
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
Abstract
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 diverter cooling system for a divertor cooling system such as a nuclear fusion device, which is effective as a radiation shield against radioactive materials 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 "Journal of Fusion Research (VOL.65 / NO.
eb. 1991) ”, it is composed of a structural material such as a cooling pipe and an armor material brazed on 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. It was structured.
【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 diverter of the nuclear fusion device is water-cooled. Oxygen 16 O in this cooling water is irradiated with neutrons in the 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 (Chemical formula 1) Since 16 N is a radionuclide that emits gamma rays with high energy of 6.2 MeV, pipes / equipment installed outside the vacuum container of the diverter cooling system. In order to shield the radiation, a large amount of shield is required.
【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。An object of the present invention is to significantly reduce the amount of a shading structure around pipes / equipment of a diverter cooling equipment installed outside a vacuum vessel by 16 N which is a main radiation source in diverter cooling water. In order to secure a space to reduce the plant cost, the structure of the divertor cooling system inside the vacuum container, which is the source of the radioactive ray source, has been improved to significantly reduce the inventory amount of 16 N taken out of the vacuum container. An object of the present invention is to provide a diverter cooling system suitable for enabling such things.
【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。In order to reduce the radiation from 16 N in diverter cooling water, the present invention is constituted by the following means focusing on the attenuation characteristic, which has a half-life of 16 N of about 7 seconds.
【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 diverter, the cooling water of the diverter cooling system is guided to the blanket cooling system in the vacuum vessel via the pipe connecting the outlet pipe of the diverter cooling system and the inlet pipe of the blanket cooling system. By providing a system configuration, it is possible to secure a decay time of 16 N in the diverter cooling water and provide a system capable of 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。In the present invention, the diverter is cooled, and at that time, 16 N produced by activating neutrons and activating 16 O is activated.
The cooling water of the diverter cooling system that contains a large amount of water passes through the pipe that is directly connected to the blanket cooling system in the vacuum container, cools the blanket, and then goes out of the vacuum container through the blanket cooling system outlet pipe. Be guided. The 16 N in the cooling water generated in the diverter is sufficiently reduced by the decay over time while the blanket is being cooled, which makes it possible to reduce the shield amount of the diverter cooling system.
【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。DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIG. FIG. 1 is a sectional view of a fusion reactor. The diverter 4 which is a device for devising the shape of the magnetic field lines around the plasma 2 in the vacuum container 1 and for guiding the escaped plasma directly to the vacuum exhaust unit 3 so as not to hit the nearby wall is cooled with water. There is.
Cooling water containing 16 N activated by neutrons in the vacuum container when cooling the diverter 4 passes through the pipe 7 connecting the diverter cooling system outlet pipe 5 and the blanket cooling system inlet pipe 6 in the vacuum container 1. The blanket cooling system, passing through the blanket 8 and allowing 16 N in the cooling water to be attenuated, then guided to the outside of the vacuum container 1,
After exchanging heat with the heat exchanger 9, the diverter 4 is circulated again in the vacuum container for cooling. In this embodiment, the cooling water containing a large amount of 16 N of the diverter cooling system flows in the blanket cooling system in the vacuum container, but the radiation emitted from the plasma 2 is shielded outside the vacuum container. Since there is a scooping body 10 which can also shield the gamma rays emitted from 16 N in the cooling water, it is not necessary to add a new screening. Figure 2
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。The blanket cooling system has a half-life of about 2 with 16 N.
If a stay time of about 14 to 50 seconds, which is ~ 7 times, can be secured, the inventory of 16 N is about 1/4 to 1/10.
It becomes 0. This is a reduction in the sheave thickness of about 20 to 85 cm in concrete when converted into the amount of the sheave body.
【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, 16 N in the cooling water of the diverter cooling system can be attenuated inside the vacuum container and is installed outside the vacuum container. Equipment for divertor cooling system
It is possible to significantly reduce the amount of pipework and 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 sectional view of a nuclear fusion reactor according to an 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。FIG. 2 is a characteristic diagram showing a relationship between a time during which cooling water of a diverter stays in a blanket cooling system in a vacuum container and an inventory of 16 N in the cooling water.
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。1 ... Vacuum container, 2 ... Plasma, 3 ... Vacuum exhaust part, 4 ... Diverter, 5 ... Diverter cooling system outlet pipe, 6 ... Blanket cooling system inlet pipe, 7 ... Piping, 8 ... Blanket,
9 ... Heat exchanger, 10 ... Shaky 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 ─────────────────────────────────────────────────── ─── Continued front page (72) Inventor Hiroyuki Handa Hitachi 2-3-1, Saiwaicho, Hitachi-shi, Ibaraki Engineering Co., Ltd.
Claims (3)
ズマの周辺の磁力線の形状を工夫して外に逃げ出した前
記プラズマが、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、炉心の前記プラズマを取り囲
み核融合反応で発生した中性子と反応してトリチウムを
生成し、また、中性子のエネルギを熱に変換するブラン
ケット、前記真空容器のまわりをとりかこみ、核融合反
応で発生した中性子やガンマ線をしゃヘいするしゃヘい
体からなる核融合炉において、前記ダイバータを冷却す
るためのダイバータ冷却系と、前記ブランケットを冷却
するためのブランケット冷却系を前記真空容器内で配管
により結んだことを特徴とするダイバータ冷却装置。1. A vacuum vessel for confining plasma, a diverter for guiding the plasma, which has escaped outside by devising the shape of magnetic lines of force around the plasma, to an exhaust part so as not to directly hit a nearby wall, a core. Of the plasma to react with the neutrons generated in the fusion reaction to generate tritium, and also to convert the energy of the neutron into heat, the blanket, the surrounding of the vacuum vessel, neutrons generated in the fusion reaction and In a fusion reactor composed of a shield that shields gamma rays, a diverter cooling system for cooling the diverter and a blanket cooling system for cooling the blanket are connected by piping in the vacuum container. A diverter cooling device characterized by.
した冷却水が前記真空容器内の配管を経由して、その
後、ブランケット冷却系へ送られ、前記ブランケットを
冷却する系統構成としたダイバータ冷却装置。2. The diverter cooling device according to claim 1, wherein the cooling water that has cooled the diverter is sent to a blanket cooling system after passing through a pipe in the vacuum container to cool the blanket. .
出口配管を前記真空容器内でブランケット冷却系の入口
配管に接続したダイバータ冷却装置。3. The diverter cooling device according to claim 1, wherein the outlet pipe of the diverter cooling system is connected to an inlet pipe of a blanket cooling system in the vacuum container.
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 true JPH0519075A (en) | 1993-01-26 |
| JP3048010B2 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) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7285105B2 (en) | 2000-06-15 | 2007-10-23 | Jms Co., Ltd | Automatic dialyzer and dialyzing method |
-
1991
- 1991-07-12 JP JP3172139A patent/JP3048010B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7285105B2 (en) | 2000-06-15 | 2007-10-23 | Jms Co., Ltd | Automatic dialyzer and dialyzing method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3048010B2 (en) | 2000-06-05 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |