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[1]毕晓蕾,陈珊珊,刘全桢,等.浮顶储罐导电片间隙放电危险性研究[J].中国安全生产科学技术,2012,8(10):24.
 BI Xiao lei,CHEN Shan shan,LIU Quan zhen,et al.Research on gap discharge risk of floating roof tank shunt[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2012,8(10):24.
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浮顶储罐导电片间隙放电危险性研究
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
8
期数:
2012年10期
页码:
24
栏目:
学术论著
出版日期:
2012-10-31

文章信息/Info

Title:
Research on gap discharge risk of floating roof tank shunt
作者:
毕晓蕾12陈珊珊3 刘全桢12刘宝全12高〓鑫12胡海燕12刘〓娟12
(1 中国石油化工股份有限公司青岛安全工程研究院,青岛〓266071) (2 化学品安全控制国家重点实验室,青岛〓266071) (3 舟山国家石油储备基地有限责任公司,舟山〓316021)
Author(s):
BI Xiaolei12 CHEN Shanshan3 LIU Quanzhen12 LIU Baoquan12 GAO Xin12  〖JZ〗HU Haiyan12LIU Juan12
(1 SINOPEC Safety Engineering Institute, Qingdao 266071, China) (2 State Key Laboratory of Chemical Safety, Qingdao 266071, China) (3 Zhoushan National Oil Reserve Base Co., Ltd, Zhoushan 316021, China)
关键词:
导电片间隙放电浮顶储罐
Keywords:
shunt gap discharge floating roof tank
分类号:
:X937
DOI:
-
文献标志码:
A
摘要:
储罐在实际运行中,受浮盘的上下移动、机械应力、老化、油污、金属腐蚀等因素的影响,很难确保导电片与罐壁紧密贴合,容易形成微小间隙,在这种情况下遭受雷击易产生间隙放电,出现打火现象。为了分析导电片与储罐罐壁导电片产生间隙放电的危险性,根据Townsend气体放电理论计算了导电片和储罐罐壁间的击穿电压,采用12/50μs冲击电压波开展了导电片间隙放电实验,分析了导电片击穿电压与空气间隙距离的关系。结果证明:当导电片和罐壁贴合不良时,导电片和罐壁之间极易产生火花放电;当空气间隙d=01cm时,平均空气击穿电压仅为5280V;随着间隙的增大,空气击穿电压也随之增大;导电片间隙放电实验数据与Townsend气体放电理论值吻合。最后,根据以上结论,针对浮顶储罐导电片间隙放电的危险性,提出了改进措施。
Abstract:
In the actual operation, it is difficult to ensure reliable connection between the shunt and the tank shell and easy to form small air gap, because the tank may be affected by the movement of the floating roof, mechanical stress, aging, oil, metal corrosion and other factors. If the tank is struck by lightning, it would be easy to cause spark discharge. To analyze risk of gap discharge between the shunt and the tank shell, the breakdown voltage between the shunt and the tank shell was calculated by Townsend theory and the shunt spark discharge experiment was carried out by using 12/50μs impulse voltage wave. The relationship between breakdown voltage of shunt and distance of air gap was analyzed. The results showed that it is easy to cause spark discharge between the shunt and the tank shell when the contact between shunt and tank shell is poor. When air gap distance is equal to 01cm, the average air breakdown voltage between the shunt and the tank shell is only 5280V. With the increase of air gap distance, the air breakdown voltage increases correspondingly. The experiment data agree well with Townsend avalanche theory. Finally, based on the above conclusions, the improvements for avoiding shunt gap discharge risk of the floating roof tank were proposed.

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备注/Memo

备注/Memo:
国家科技支撑计划课题(编号:2012BAK03B03)
更新日期/Last Update: 2012-11-12