Research and Developments of Advanced Pellet Injector

先进颗粒注射器的研制

• 批准号: 07558191
• 负责人: SUDO Shigeru
• 金额: $ 4.8万
• 依托单位: National Institute for Fusion Science
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A)
• 财政年份: 1995
• 资助国家: 日本
• 起止时间: 1995 至 1997
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07558191/
• 关键词: cryogenic pellet injector; pneumatic pipe gun pellet injector; repetitive refueling; porous copper disk; hydrogen isotope pellet; 水素同位体固化ペレット; 繰り返しペレット射出; パイプガン; ポーラス銅ディスク; 燃料供給; 銅網ブロック; 核融合プラズマ粒子補給

A pellet injector of repetitive pneumatic pipe-gun type has been designed for advanced plasma fueling applications. This new concept is estimated to be able to reduce the time for pellet formation by an in situ technique from 3-5 minutes to 2-10 seconds. The basic idea of the new approach to pellet formation is to supply a hydrogen isotope pellet through a copper porous unit into a pipe-gun-type barrel. Two modes are possible : (1) to push liquid hydrogen isotope through a porous unit and re-freezing inside of the barrel, (2) to push solid hydrogen isotope through porous unit to the inside of the barrel. This principle provides a continuous injection of an unlimited amount of pellets. For demonstration of the proof-of-principle, several experiments have been carried out. Hydrogen pellets of 3 mm in diameter and 3 to 10 mm in length were accelerated to 1.2 km/s at rate of pellet per 10-34 s with a manually controlled injector operation. On the basis of this experience, we succeeded in 3 to 4 seconds repetition with high reliability.

重复气动管枪型颗粒注射器专为先进的等离子燃料应用而设计。据估计，这一新概念能够将原位技术的颗粒形成时间从 3-5 分钟缩短至 2-10 秒。丸粒形成新方法的基本思想是通过铜多孔单元将氢同位素丸粒供应到管枪式枪管中。可能有两种模式：(1)将液态氢同位素推过多孔单元并在桶内部重新冻结，(2)将固态氢同位素推过多孔单元至桶内部。该原理可连续注射无限量的颗粒。为了证明原理验证，进行了多项实验。通过手动控制的注射器操作，直径为 3 mm、长度为 3 至 10 mm 的氢气颗粒以每 10-34 秒的颗粒速率加速至 1.2 km/s。在此经验的基础上，我们成功地实现了3至4秒的重复，可靠性很高。

项目成果

I.Viniar, S.Sudo: "Repeating pneumatic pipe-gun for plasma fuelling" Review of Scientific Instruments. 68. 1444-1447 (1997)

I.Viniar、S.Sudo：“用于等离子燃料的重复气动管枪”科学仪器评论。

S.Sudo, I.Viniar: "Developments of Repetitive Pnevmatic Pipe:gun Pellet Injector" Jovrnal of Plasma and Fusion Research. 73. 518-525 (1997)

S.Sudo，I.Viniar：“重复气动管的发展：枪弹注射器”等离子与聚变研究杂志。

I.Viniar and S.Sudo: "Repeating pneumatic pipe-gun for plasma fueling" Review of Scientific Instruments. 68. 1444-1447 (1997)

I.Viniar 和 S.Sudo：“用于等离子体燃料的重复气动管枪”科学仪器评论。

S.Sudo and I.Viniar: "Developments of Repetitive Pneumatic Pipe-gun pellet Injector" Journal of Plasma and Fusion Research. 73. 518-525 (1997)

S.Sudo 和 I.Viniar：“重复气动管枪颗粒注射器的发展”等离子与聚变研究杂志。

須藤 滋: "パイプガン型高繰り返しペレット射出装置の開発" プラズマ核融合学会誌. 印刷準備中.

Shigeru Sudo：“管枪式高重复颗粒注射装置的开发”，日本等离子融合学会杂志，准备印刷。