| 立式内浮顶油罐瘪罐现象分析 |
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| 引用本文： | 于涛,张礼敬,段志祥,廖启霞,张礼明.立式内浮顶油罐瘪罐现象分析[J].油气储运,2007,26(7):46-49. |
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| 作者姓名： | 于涛 张礼敬 段志祥 廖启霞 张礼明 |
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| 作者单位： | 1. 南京工业大学安全工程研究所
2. 江苏省海门市广播电视局 |
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| 摘 要： | 针对立式内浮顶油罐遭受热带风暴侵袭后瘪罐事故屡有发生的现象,采用ANSYS软件建立有限元模型,对立式油罐进行了几何非线性分析,计算得出风压导致的变形量较小,表明风压对瘪罐事故的影响较小。同时,对呼吸阀的输送能力进行了分析,结果表明,温度骤降时机械呼吸阀换气量不足是导致事故的主要原因。根据分析结果,提出了提高储罐安全性的建议。
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| 关 键 词： | 立式内浮顶罐 瘪罐 有限元 呼吸阀 分析 |
| 修稿时间： | 2006-08-28 |
Study on the Concavity of Vertical Inner Floating Roof Tank |
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| YU Tao,ZHANG Lijing et al ..Study on the Concavity of Vertical Inner Floating Roof Tank[J].Oil & Gas Storage and Transportation,2007,26(7):46-49. |
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| Authors: | YU Tao ZHANG Lijing |
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| Abstract: | Concavity on vertical inner floating roof tank is the consequence of tropical storms in summer season. This phenomenon may be caused by two reasons; (1) higher wind pressure of the tropical storm than the design wind pressure of the vertical tank; and (2) negative pressure resulting from rapid decrease of ambient temperature and insufficient ventilation volume in breather valve. By means of ANSYS mechanics reasons for tank concavity are analyzed through finite element (FE) model and a conclusion is that valve distortion resulting from the impact of wind pressure is very small. Also ventilation volumes in breather valve are calculated, and in consequence, a major cause of the accident is lacking of sufficient ventilation volume in breather valve. Suggestions are given for improving the safety of the vertical tank. |
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| Keywords: | vertical inner floating roof tank concavity phenomenon breather valve tropical storm finite element model ANSYS software analysis |
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