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[1]吴子民,禚莉,王天伟,等.基于N2 Townsend放电的气体检测器[J].南京工业大学学报(自然科学版),2014,36(01):123-127.[doi:10.3969/j.issn.1671-7627.2014.01.023]
 WU Zimin,ZHUO Li,WANG Tianwei,et al.Gas detector based on nitrogen townsend discharge[J].Journal of NANJING TECH UNIVERSITY(NATURAL SCIENCE EDITION),2014,36(01):123-127.[doi:10.3969/j.issn.1671-7627.2014.01.023]
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基于N2 Townsend放电的气体检测器()
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《南京工业大学学报(自然科学版)》[ISSN:1671-7627/CN:32-1670/N]

卷:
36
期数:
2014年01期
页码:
123-127
栏目:
出版日期:
2014-01-20

文章信息/Info

Title:
Gas detector based on nitrogen townsend discharge
文章编号:
1671-7627(2014)01-0123-05
作者:
吴子民1禚莉2王天伟1高海健3韩毓旺1
1.南京工业大学 理学院,江苏 南京 210009; 2.江苏国电南自海吉科技有限公司,江苏 南京 210009; 3.南京工业大学 化学化工学院,江苏 南京 210009
Author(s):
WU Zimin1ZHUO Li2WANG Tianwei1GAO Haijian3HAN Yuwang1
1.College of Sciences,Nanjing University of Technology,Nanjing 210009,China; 2.Jiangsu SAC-Haiji Sci&Tech Co. Ltd.,Nanjing 210009,China; 3.College of Chemistry and Chemical Engineering,Nanjing University of Technology,Nanjing 210009,China
关键词:
Townsend放电 离子化检测器 微电流气体放电
Keywords:
Townsend discharge ionization detector micro-current gas discharge
分类号:
TP212.2
DOI:
10.3969/j.issn.1671-7627.2014.01.023
文献标志码:
A
摘要:
放电回路中串入50 MΩ以上的限流电阻时,同轴圆筒结构的检测池在N2流中激发出稳定的大气压Townsend放电。研究了C2H2、C2H4、C2H6 3种气体在检测池中的响应情况,考察了放电电流、载气流速对响应特性的影响。实验发现:3种气体通过放电区时都使放电平均电流下降,表现为负峰。用膜管扩散法测得该检测器对C2H2、C2H4、C2H6 3种气体的最低检测限分别为0.2、0.2和0.3 μL/L,三者的响应线性范围都约为103。该检测器工作时的放电电流低,电极不易发生溅射损耗和污染,具有较高的稳定性。
Abstract:
Stable atmospheric Townsend discharge was obtained on the lab-constructed detector with two coaxially arranged electrodes by placing a very large(>50 MSymbolWA@)current-limiting resistor in discharge circuit.Response characteristics of C2H2,C2H4,and C2H6 on lab-constructed detector were investigated and the effects of discharge current,carrier gas flow rate on the detector performance were studied.Test results showed that the average discharge current in each of the three cases descended and presented negative peak.Membrane diffusion method was used to test the minimum detectable limit(MDL)of the three gases, C2H2, C2H4,and C2H6 in the detector, MDL was 0.2,0.2 and 0.3 μL/L respectively with a linear range about 103.The detector had good stability with extremely low working current, and less electrode sputtering and pollution.

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备注/Memo

备注/Memo:
收稿日期:2013-05-07
作者简介:吴子民(1987—),男,江苏常州人,硕士,主要研究方向为变压器在线监测; 韩毓旺(联系人),教授,E-mail:hanyw@njut.edu.cn..
更新日期/Last Update: 2014-01-20