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Article Navigation >  Explosion And Shock Waves  > 2012  >  32(6): 669-672
YU Jian-liang, YAN Xing-qing, LI Di. Pressurecharacteristicsindustexplosionreliefprocessbyusingareliefpipe[J]. Explosion And Shock Waves, 2012, 32(6): 669-672. doi: 10.11883/1001-1455(2012)06-0669-04
Citation: YU Jian-liang, YAN Xing-qing, LI Di. Pressurecharacteristicsindustexplosionreliefprocess byusingareliefpipe[J]. Explosion And Shock Waves, 2012, 32(6): 669-672. doi: 10.11883/1001-1455(2012)06-0669-04
shu

Pressurecharacteristicsindustexplosionreliefprocess byusingareliefpipe

doi: 10.11883/1001-1455(2012)06-0669-04
  • 1.

    SchoolofChemicalMachinery,DalianUniversityofTechnology,

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  • Corresponding author: YU Jian-liang
  • Publish Date: 2012-11-25
    Abstract
  • Thealuminumpowderof2mparticlesizewastakenasthemediumandaseriesofdustexplosionreliefexperimentswerecarriedoutbylinkingthesteel eliefpipeswith25mminternaldiametertothetopofthecylindricalsteelvesselwith68mminternaldiameterand305mmheight. The steelreliefpipelengthandthedustmassconcentrationwereadjusted,respectively,toinvestigatethe pressurecharacteristicsinthevesselandthereliefpipeandtoexploreprincipallythesecondaryexplosion- inducedconditionintheexplosionreliefprocess.Experimentalresultsdemonstratethatsecondaryexplosionmayoccurwhenthereliefpipelengthanddustmassconcentrationarenolessthan1500 mmand500g/m3,respectively.Thepressurewavesinducedbysecondaryexplosionpropagatetowardboththevesselandthereliefpipeend. Thepressurewavespropagatingtowardthevesseldisturbthereliefprocessandinducetheresidualunburntcombustible mixtureinthevesselreact. Hence,secondarypressurepeakappearsinthevessel.
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