点火位置和开口率对泄压管道内爆炸压力的影响

doi:10.16265/j.cnki.issn1003-3033.2020.01.015

中国安全科学学报 ›› 2020, Vol. 30 ›› Issue (1): 94-100.doi: 10.16265/j.cnki.issn1003-3033.2020.01.015

点火位置和开口率对泄压管道内爆炸压力的影响

许闯¹, 陈先锋^**1 教授, 代华明¹, 黄楚原¹, 赵齐¹, 王玉杰² 教授

1.武汉理工大学安全科学与应急管理学院,湖北武汉 430070;
2.武汉理工大学资源环境与工程学院,湖北武汉 430070

收稿日期:2019-10-12 修回日期:2019-12-01 出版日期:2020-01-28 发布日期:2021-01-22
通讯作者: ** 陈先锋(1975—),男,湖北孝感人,博士,教授,博士生导师,主要从事于工业安全与消防。E-mail:52398151@qq.com。
作者简介:许闯 (1994—),男,河南洛阳人,硕士研究生,主要研究方向为工业安全与消防、防火防爆技术E-mail:xc268360@163.com。
基金资助:
国家自然科学基金资助(51774221,51804237);国家重点研发计划项目(2018YFC0808500);湖北省自然科学基金资助(2018CFB207)。

Influence of ignition position and opening ratio on explosion pressure in pressure-relief pipe

XU Chuang¹, CHEN Xianfeng¹, DAI Huaming¹, HUANG Chuyuan¹, ZHAO Qi¹, WANG Yujie²

1. School of Safety Science and Emergency Management, Wuhan University of Technology, Wuhan Hubei 430070, China;
2. School of Resources and Environment Engineering, Wuhan University of Technology, Wuhan Hubei 430070, China

Received:2019-10-12 Revised:2019-12-01 Online:2020-01-28 Published:2021-01-22

摘要/Abstract

摘要： 为探究2种初始条件对天然气爆炸压力的影响特性,搭建球形容器泄压管道试验系统,通过在球形容器和泄压管道内布置压力传感器,研究不同点火位置(距球心0、2.7、4.7 m)和开口率(0%、25%、60%、100%)对天然气爆炸压力特性的影响。结果表明:当点火位置位于2.7 和4.7 m时,球形容器内的峰值压力和升压速率显著大于0 m处点火的数值;设置泄压口明显降低了球形容器内的峰值压力,而随泄压口开口率增大,球内峰值压力降低幅度较小;容器密闭时,管道末端峰值压力在0 m处点火时最大,容器设有泄压口时,管道末端峰值压力在4.7 m处点火时最大;在0 m处点火后管道末端的最大升压速率小于在2.7和4.7 m处点火后的速率。

关键词: 球形容器, 泄压管道, 点火位置, 开口率, 爆炸压力特性

Abstract: In order to study the influence of different initial conditions on the explosion pressure of natural gas, an experimental system of a spherical vessel connecting to pressure relief pipe was built. By the pressure sensors placed in spherical vessels and pressure relief pipes, the characteristics of explosion pressure were obtained at the ignition position of 0, 2.7 and 4.7 m from spherical vessel center and the opening ratio of 0%, 25%, 60% and 100%. The results show that when the ignition position is located at 2.7 and 4.7 m, the peak pressure and pressure increase rate in spherical vessel are significantly larger than the values after ignition at 0 m, that setting the pressure relief port obviously reduces the peak pressure in spherical vessels, but with the increasing of the opening ratio, the decreasing of peak pressure is not obvious, that the peak pressure at the end of the pipe is maximum at the ignition position of 0 m without the relief port while it is maximum at the ignition position of 4.7 m with a pressure relief port, and that when the ignition position is at 0 m, the maximum pressure increase rate at the end of the pipe is less than that at the ignition position of 2.7 and 4.7 m.

Key words: spherical vessels, pressure relief pipe, ignition position, opening ratio, explosion pressure characteristics

中图分类号:

X932

许闯, 陈先锋, 代华明, 黄楚原, 赵齐, 王玉杰. 点火位置和开口率对泄压管道内爆炸压力的影响[J]. 中国安全科学学报, 2020, 30(1): 94-100.

XU Chuang, CHEN Xianfeng, DAI Huaming, HUANG Chuyuan, ZHAO Qi, WANG Yujie. Influence of ignition position and opening ratio on explosion pressure in pressure-relief pipe[J]. China Safety Science Journal, 2020, 30(1): 94-100.

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点火位置和开口率对泄压管道内爆炸压力的影响

Influence of ignition position and opening ratio on explosion pressure in pressure-relief pipe

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