有无泄压条件下的管道油气爆轰实验研究

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振动与冲击 ›› 2018, Vol. 37 ›› Issue (16) : 261-266.

论文

有无泄压条件下的管道油气爆轰实验研究

蒋新生1，谢威1，魏树旺2，徐建楠1，周毅1

作者信息 +

An experimental study on gasoline-air mixture explosions in pipes under closed and vented conditions

JIANG Xinsheng1, XIE Wei1, WEI Shuwang2, XU Jiannan1, ZHOU Yi1

Author information +

文章历史 +

摘要

为研究密闭和泄压条件下油气爆轰波的发展规律的区别，以及密闭和泄压条件对管道爆轰的超压及火焰的影响，搭建了23.3m细长管道油气爆炸实验系统，并进行了油气爆炸实验。实验结果表明：不管是泄压还是密闭管道，当管道长度足够长时，都经历一个由爆燃转爆轰的过程；当管道内达到爆轰状态时，产生的最大超压值将达到3MPa以上；当火焰的传播至泄压点的距离过长时，泄压反而会使爆轰的发生时间提前，设置合理的泄压点位置对安全防护工程具有重要意义；爆轰后的泄压措施对体系的保护作用是后发性的，其能够达到最终降压目的，前提是体系的承压设计必须大于管道产生爆轰的最大超压；泄压条件下的油气爆炸管口喷射火焰长约3m，宽约1.5m，呈椭球型，对实际工程中的泄压安全距离具有参考价值，避免发生二次破坏。

Abstract

To study the difference in the development rules of gasoline-air mixture detonation waves in enclosed pipes and vented pipes and the effects of the two kinds of conditions on the overpressure and flame propagation of detonation in pipes, a 23.3-meter slender pipeline experimental system was set up, and the gasoline-air mixture explosion experiment was carried out.The result shows that whether the pipe is enclosed or vented, the pipe will undergo a process of deflagration to detonation if it is long enough.And when the pipe is in a state of detonation, the maximum overpressure generated will exceed 3 MPa above.When the flame’s length as it spreads to the venting point is too long, the detonation will occur ahead of the time in the enclosed pipe.Therefore, setting a reasonable venting point for safety protection projects is of great significance.Pressure relief measures on the protection of the system after detonation is posterior, but it can achieve the ultimate purpose of reducing pressure only if the system’s pressure design is greater than the maximum overpressure of the explosion in the pipe.Under the condition of pressure relief, the flame of the gasoline-air mixture explosion spraying out from the pipe nozzle is about 3 meters long and 1.5 meters wide, and it is ellipsoid-shaped, which is of reference value to safety distance of the pressure relief in practical engineering to avoid secondary destruction.

导出引用

蒋新生1，谢威1，魏树旺2，徐建楠1，周毅1. 有无泄压条件下的管道油气爆轰实验研究[J]. 振动与冲击, 2018, 37(16): 261-266

JIANG Xinsheng1, XIE Wei1, WEI Shuwang2, XU Jiannan1, ZHOU Yi1. An experimental study on gasoline-air mixture explosions in pipes under closed and vented conditions[J]. Journal of Vibration and Shock, 2018, 37(16): 261-266

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