Experiment on combustion and detonation characteristics and its suppression for liquid vapor

XIE Li-feng; LI Bin; SHEN Zheng-xiang; LONG Yin

doi:10.11883/1001-1455(2009)06-0659-06

Volume 29 Issue 6

Sep. 2014

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XIE Li-feng, LI Bin, SHEN Zheng-xiang, LONG Yin. Experiment on combustion and detonation characteristics and its suppression for liquid vapor[J]. Explosion And Shock Waves, 2009, 29(6): 659-664. doi: 10.11883/1001-1455(2009)06-0659-06

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Experiment on combustion and detonation characteristics and its suppression for liquid vapor

doi: 10.11883/1001-1455(2009)06-0659-06

1.
Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, China;
2.
State Key Laboratory of Explosive Science and Technology, Beijing Institute of Technology, Beijing 100081, China;
3.
Nanjing Fire Protection Technology Co Ltd, Nanjing 210007, Jiangsu, China

Publish Date: 2009-11-25

Abstract

Abstract

An apparatus for measuring explosion limit of combustible liquid vapor was designed. The explosion limits and detonation parameters, the least explosion suppressible concentration of RP-5 oil, RP-3 oil and alcohol air mixtures were measured respectively by using the apparatus and vertical detonation tube. The results indicate that the explosion limits and the least explosion suppressible concentration of the 1301 inert gas are (1.53~7.73)%, (0.82~7.17)% and (3.38~18.25)%, 6.75%, 6.8% and 5.56%, respectively, by volume, for RP-5 oil, RP-3 oil and alcohol air mixtures; the least explosion suppressible concentrations of N2, and CO2 are 49% and 45%, respectively, by volume, for RP-3 oil air mixtures. So the suppression effect of 1301 inert gas is better than CO2 and N2. The critical initiation energy, detonation velocity and pressure, the width of detonation wave cells are 2.11 MJ/m2, 1 609 m/s, 1 480 kPa, 14.5 mm, respectively, for alcohol-air mixture with equivalence ratio concentration.
- mechanics of explosion,
- explosion range,
- detonation parameters,
- combustible liquid vapor,
- critical initiation energy,
- explosion suppression

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