中国安全科学学报 ›› 2022, Vol. 32 ›› Issue (1): 135-141.doi: 10.16265/j.cnki.issn1003-3033.2022.01.018

• 公共安全 • 上一篇    下一篇

喷射火环境下石化管廊管道失效特征试验研究

周宁1(), 吴露露1, 李雪1, 李徐伟1, 时静洁2, 曹林林1   

  1. 1常州大学 石油工程学院,江苏 常州 213164
    2常州大学 环境与安全工程学院,江苏 常州 213164
  • 收稿日期:2021-10-24 修回日期:2021-12-08 出版日期:2022-01-28
  • 作者简介:

    周宁(1977—),男,四川眉山人,博士,教授,主要从事储运安全、爆炸力学等方面的研究。E-mail:
    周宁 教授,李雪 副教授,时静洁 讲师

  • 基金资助:
    江苏省“六大人才高峰”创新人才团队项目(TD-JNHB-013); 江苏省研究生培养创新工程研究生科研与实践创新计划(KYCX20_2576); 江苏省研究生培养创新工程研究生科研与实践创新计划(SJCX20_0986); 江苏省高等学校自然科学研究面上项目(19KJB620002)

Experimental study on failure features of petrochemical pipelines under jet fire

ZHOU Ning1(), WU Lulu1, LI Xue1, LI Xuwei1, SHI Jingjie2, CAO Linlin1   

  1. 1School of Petroleum Engineering, Changzhou University, Changzhou Jiangsu 213164, China
    2School of Environmental and Safety Engineering, Changzhou University, Changzhou Jiangsu 213164, China
  • Received:2021-10-24 Revised:2021-12-08 Published:2022-01-28

摘要:

为探究喷射火灾下石化管廊管道热力学响应特征,依据流体力学相似理论搭建缩比试验平台,开展石化管廊管道热力学响应试验研究。通过分析火灾中管道热力学响应特征及事故多米诺演化特征,探讨各因素对管道升温和失效的影响程度,并结合强度理论建立管道失效时间定量计算模型。研究结果表明:火灾功率是管道失效的主导因素,随着火灾功率的增大,管道失效时间缩短;水平方向喷射火影响程度最大,相较于垂直方向喷射火管道峰值温度提升近一倍;多喷射火源下火焰强度、覆盖范围急剧增加,受火管道峰值温度达到800 ℃,钢结构管道强度基本丧失;液相介质会加速管道失效,且管道压力、管道尺寸、距火源远近程度对管道失效影响显著。

关键词: 喷射火, 石化管廊, 热响应, 管道失效, 火灾功率

Abstract:

In order to explore thermodynamic response law of petrochemical pipelines under jet fire, a scale-up test platform was built according to similarity theory to carry out experimental study on this topic. Based on analysis on pipelines' thermodynamic response and domino evolution in fire, influence of various factors on their temperature rise and failure was discussed, and a quantitative calculation model of pipeline failure time was established by adopting strength theory. The results show that fire power is a dominant factor of pipeline failure, along with its increase, failure time will be shortened. Horizontal jet fire has the greatest impact, and the peak temperature of pipeline is nearly doubled compared with the case of vertical jet fire. Under the situation of multiple jet fire sources, flame intensity and coverage area increase sharply, while peak temperature reaches as far as 800 ℃, resulting in failure of steel structure pipelines' strength. Liquid medium will accelerate pipeline failure, and pipeline pressure, size, distance from fire source all have significant influence on its failure.

Key words: jet fire, petrochemical pipeline, thermal response, pipe failure, fire power