中国物理B ›› 2015, Vol. 24 ›› Issue (6): 65205-065205.doi: 10.1088/1674-1056/24/6/065205

• PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES • 上一篇    下一篇

Current-voltage characteristics of hydrogen DC plasma torches with different sizes in an external axial magnetic field

马杰, 闻光东, 苏宝根, 杨亦文, 任其龙   

  1. Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China
  • 收稿日期:2014-11-19 修回日期:2014-12-30 出版日期:2015-06-05 发布日期:2015-06-05
  • 基金资助:
    Project supported by the Special Fund for Basic Scientific Research of Central Colleges, China (Grant No. 2012FZA4023).

Current-voltage characteristics of hydrogen DC plasma torches with different sizes in an external axial magnetic field

Ma Jie (马杰), Wen Guang-Dong (闻光东), Su Bao-Gen (苏宝根), Yang Yi-Wen (杨亦文), Ren Qi-Long (任其龙)   

  1. Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China
  • Received:2014-11-19 Revised:2014-12-30 Online:2015-06-05 Published:2015-06-05
  • Contact: Su Bao-Gen E-mail:subg@zju.edu.cn
  • About author:52.80.-s
  • Supported by:
    Project supported by the Special Fund for Basic Scientific Research of Central Colleges, China (Grant No. 2012FZA4023).

摘要: Current–voltage (I–V) characteristics of hydrogen DC plasma torches with different sizes in an external axial magnetic field under atmospheric pressure are reported. Three anodes with different diameters are adopted in a 50-kW torch: 25 mm, 30 mm, and 35 mm, respectively. Two different diameters of anodes, that is, 100 mm and 130 mm, are adopted in a 1-MW plasma torch. The arc voltage shows a negative trend with the increase of arc current under the operating regimes. On the contrary, arc voltage shows a positive trend as the flow rate of carrier gas increases, and a similar trend is found with increasing the external magnetic flux density. A similarity formula is constructed to correlate the experimental data of the torches mentioned above. Linear fitting shows that the Pearson correlation coefficient is 0.9958.

关键词: magnetically rotating, hydrogen plasma, I–, V characteristics, similarity theory

Abstract: Current–voltage (I–V) characteristics of hydrogen DC plasma torches with different sizes in an external axial magnetic field under atmospheric pressure are reported. Three anodes with different diameters are adopted in a 50-kW torch: 25 mm, 30 mm, and 35 mm, respectively. Two different diameters of anodes, that is, 100 mm and 130 mm, are adopted in a 1-MW plasma torch. The arc voltage shows a negative trend with the increase of arc current under the operating regimes. On the contrary, arc voltage shows a positive trend as the flow rate of carrier gas increases, and a similar trend is found with increasing the external magnetic flux density. A similarity formula is constructed to correlate the experimental data of the torches mentioned above. Linear fitting shows that the Pearson correlation coefficient is 0.9958.

Key words: magnetically rotating, hydrogen plasma, I–V characteristics, similarity theory

中图分类号:  (Electric discharges)

  • 52.80.-s