基于罐基础内油气检测的罐底探漏新方法  

Renovated method for detecting the oil tank bottom leakage via testing the oil vapor at the tank foundation

作　　者：杨金林[1] 杜明忠[1] 张方林[1] 周林[1] 黎大元 马致文 张华强[3] 

机构地区：[1]中国人民解放军76167部队 [2]湖北陆军预备役舟桥团 [3]中国人民解放军76155部队

出　　处：《安全与环境学报》2016年第1期123-128,共6页Journal of Safety and Environment

基　　金：军队后勤重点科研项目(油20080208)

摘　　要：通常油罐底部铺有300~600 mm的砂垫层,渗漏油气则会在砂垫层中扩散和渗透,只需在罐基础上钻取数个深达砂垫层的探漏孔或预埋数个探漏管,就能用10-6级灵敏度油气体积比检测仪探测到油罐底板的渗漏。现场试验数据表明,该探漏法可比油库现行方法提前3个月以上发现油罐底板的渗漏。通过该方法的现场应用得到结论：若油罐渗漏油品,其罐基础内某个或某几个探测孔（或管）内的油气体积比会逐渐升高或急剧飙升,可达到该库无漏油罐基础内平均油气体积比的几十倍甚至上百倍,或者某个探漏孔（或管）内油气体积比是其余孔内平均油气体积比的近十倍,甚至几十倍。在试验数据分析的基础上提出了汽、煤和柴油油罐的判漏标准,即当某个汽油罐的1个探测孔（或管）或多个探测孔（管）的油气体积比达到该库无漏油罐基础内平均油气体积比的几十倍甚至上百倍,或某个探漏孔（或管）内油气体积比是其余孔内平均油气体积比的近十倍甚至几十倍时,可以判断该罐已经漏油了。The present paper is aimed to introduce a renovated method for finding oil tank leakage at the tank bottom through testing the oil vapor volume fraction in the tank foundation. As is known,there is usually a sand pad of 300 - 600 mm thickness in the tank foundation, through which the oil vapor may be likely to get diffused and penetrated in the porous sand pad. In our experience, it is easy for the oil tank runners to find the leakage of the tank only needed to drill several detecting holes arriving in the sand pad or to pre-bury several detecting pipes in the sand pad by using a vapor detector with 10-6 grade sensitivity. The on-spot experimental data indicate that the method developed by us can detect the leakage in the tank bottom three months in advance than with other methods currently widely used in the oil depot. From the on-spot application of the method, it is possible for us to conclude： if there is any oil leakage in the tank bottom, the vapor volume fraction in one or some few detecting holes （or pipes） in the foundation tends to increase gradually or sharply, and may reach dozens of and even hundreds of times of the total aver- age vapor volume values in the foundation of the tanks without any leakage of the oil depot, or the vapor volume fraction in one detecting hole （or pipe） is about ten or dozens of times of the average vapor volume fraction of the other holes （or pipes） in the foundation of the tank. Based on the analysis of the experimental data, we would like to put forward a leakage-judging standard of the oil tank bottoms, namely： when the vapor volume fraction values in one or more detect- ing holes of any oil tank＇ s foundation reaches dozens to hundreds of times of the total average vapor volume in the foundation of the oil tanks without leakage of the oil depot or the vapor volume fraction in one detecting hole （or pipe） in the foundation of the tank, it tan be deduced that there has occurred leakage in the petroleum products tank, which can be taken as a kind of i

关 键 词：安全工程 油罐 底板 探漏方法 渗漏 油气体积分数 

分 类 号：X937[环境科学与工程—安全科学]