水替代气体灭火系统液态灭火剂喷放相似数的研究

Study of the similar number using water to replace the liquid state extinguishant in gas fire extinguishing system for discharging

通过理论推导,分析储存体积相同、管道进口压力相同和变化两种情况下,两种不可压缩流体不稳定流动的时间比,证明水和不可压缩流气体灭火剂喷射时间的相似性,获取了水替代不可压缩流气体灭火剂喷射时间的定量修正参数。以七氟丙烷和水为例进行了实际喷射对比实验,进一步验证了理论推导的修正参数的准确性。

By theoretical deduction, the time proportion of two kinds of incompressible fluid under the situation of same storage volume, same and different pipe input pressure was analyzed, to prove the similarity of the discharge time between water and incompressible gas extinguishant, and got the correction param- eters of the discharge time of water replacing incompressible gas extinguishant. A contrast experiment research was made be- tween the water and Heptafluoropropane, which further veri- fied the accuracy of correction parameters.