东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2004, Vol. 25 ›› Issue (1): 44-47.DOI: -

• 论著 • 上一篇    下一篇

粉尘云最小点火能测试方法的比较与分析

李新光;董洪光;S.Radandt;赫冀成   

  1. 东北大学信息科学与工程学院;东北大学信息科学与工程学院;应用系统安全及劳动医学研究协会;东北大学材料与冶金学院 辽宁沈阳　110004
  • 收稿日期:2013-06-24 修回日期:2013-06-24 出版日期:2004-01-15 发布日期:2013-06-24
  • 通讯作者: Li, X.-G.
  • 作者简介:-
  • 基金资助:
    留学归国博士启动基金资助项目·

Comparison and analysis of different testing methods of minimum ignition energy of dust cloud

Li, Xin-Guang (1); Dong, Hong-Guang (1); Radandt, S. (2); He, Ji-Cheng (3)   

  1. (1) Sch. of Info. Sci. and Eng., Northeastern Univ., Shenyang 110004, China; (2) Society for Appl. Syst. Safety, Mannheim 68165, Germany; (3) Sch. of Mat. and Metall., Northeastern Univ., Shenyang 110004, China
  • Received:2013-06-24 Revised:2013-06-24 Online:2004-01-15 Published:2013-06-24
  • Contact: Li, X.-G.
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摘要： 在1 2L哈特曼管、20L球、振动筛落管3种粉尘云最小点火能测试装置上对随时间和空间变化并对最小点火能测量有重要影响的湍流度、粉尘浓度和粉尘分散质量进行了定量测量和比较·在上述3种装置上借助最小点火能测试仪对粉尘云最小点火能进行了测量和比较,对影响最小点火能测量的因素进行了分析讨论·分析与测量表明:粉尘分散方法以及粉尘初始湍流度的大小对粉尘分散度影响很大;气流携带法(20L球)对粉尘的分散最好,堆积法(1 2L哈特曼管)次之,自由下降法(振动筛落管)最差·因此,振动筛落管不适宜作为最小点火能测试装置·

关键词: 粉尘爆炸, 最小点火能, 湍流度, 粉尘浓度, 20L球, 12L哈特曼管, 振动筛落管

Abstract: The three important time/space-dependent influencing factors on the measurement of dust, were tested quantitatively by a 1.2 L Hartmann bomb, 20 L-sphere and vibratory sieving tube, as the testing apparatus for dust cloud, and the results were compared. Then, a special instrument was used together with the three apparatus to measure the minimum ignition energy of dust cloud. The results were also compared. Based on such results the influencing factors on the measurement of the minimum ignition energy were discussed. It is revealed that the influencing factors on the dust dispersity are the way to disperse dust and the magnitude of initial turbulivity. With respect to the dust dispersion effect, 20 L-sphere is the best, the 1.2 L Hartmann bomb is the second, vibratory sieving tube is the poor one. The fact implies that the vibratory sieving tube is improper to testing minimum ignition energy.

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