GBT 15929-1995 粉尘云最小点火能测试方法双层振动筛落法(积分计算能量)

GB/T159291995DeterminationoftheminimumignitionenergyofdustcloudAmethodofdust-fallingfordouble-deckshakingsieve(integratedcalculationofenergy)111111.11995-12-201996-06-01GB/T1592919951.222.12.1.1capacitordischargesparkswithdecayingnaturaltype2.1.2sparktime(ms)2.1.3WeenergyofsparksWemJ2.1.4ldistancebetweenelectrodesl(mm)2.22.2.1dust2.2.2combustibledust2.2.3ydustconcentrationyg/m32.32.3.1EignitionenergyEmJ2.3.2influentialfactor2.3.3monotonefactor2.3.4extremevaluefactoryl2.3.5sensitivestate2.3.6sensitivevalueymmlm2.3.7totalsensitivestateGB/T1592919952.3.8totalsensitivevalueyMMlM2.42.4.150EA,50EA,B,50theminimumignitionenergywithignitionprobabilityof50underpartialsensitivestateEA,50EA,B,5050mJAB2.4.250EM,50theminimumignitionenergywithignitionprobabilityof50underthetotalsensitivestateEM,5050mJ2.4.3PEM,PtheminimumignitionenergywithignitionprobabilityofP%underthetotalsensitivestateEM,PPmJ2.4.4ElimlimitsensitivityofelectrostaticsparksElimmJ2.52.5.1explosiontestingapparatuswithadouble-deckshakingsieveforafallofdust3AµσEM,50=10µ1EM,P=EM,50·10tp%.σ2ElimEM,50%·104.7534σ3tpPB4GB/T1592919954.14.1.11AB9.310.3cm3L5L110mm30mm8060504540353025201614121086541.52.0mm120mm600100014.1.2GB/T1592919952s2s4.24.2.130kV10kVCd0.0011µFRd400106ΩRc50MΩ10001Ra1Ω30ø2mm1040µm2RdCdUd24.2.22Ue(t)i(t)WeGB/T159291995∫=teedttUtiW0)()(455.15.25.2.15.2.1.12mm301040µm5.2.1.220075µm5.2.1.315.2.1.45.2.1.5103586106kPa755.2.2lyyMyMMlM5001600g/m3M1ms5.2.15.2.2.1mlmy500g/m31msAGB/T159291995lE50%E50%-llmy500g/m3l=lmAEl,50%El50%m50N105.2.2.2MlMm1ms±10MlMMlMm1ms±10y500g/m3=m5.2.2.1l´my=500g/m3l=l´m5.2.2.1´mM1ms´mm±10´ml´m´MlM´mm±10″ml″m″ml″mMlM5.2.2.3yM=Ml=lMAyE,l,50%E,l,50%yymymyMymN105.3µσ5.2.1Aµσ5.4µσ1235.55.25.45.5.1RdCdlWelWeRdCda.l-RdCdb.lCd-Rdc.lWe-RdCdd.lWe-CdRde.RdCd-Uf.RdCdWe-UbdacGB/T1592919955.5.2Mfyy-fM15.5.3RdCdyMfa.4.1.2b.CdWeWea.b.c.2sN10µσN506a.b.c.d.e.GB/T159291995f.g.h.i.j.µσk.EM,50%EM,1%Eliml.m.GB/T159291995AA1EEµσmZilgEii=12mZiEiNZiNiZiPi=Ni/N(i12m)PiZPi5050Z50µµZ50lgE50A150PZpPtpσ%%PPtZµσ−A2m7N50P10.1Pm0.9µÓA2A2.1ZZ1lgE1dZ0E1KEk10ZkK+1Ek+110-dEkKK+1Ek+110dEkE110mmZilgEimdd0.8σ1.5σm48GB/T159291995A2.2µσZmZ1Z2Zmni,oni,xnini,o+ni,xn1,0nm,x0N0NxN∑==miinN20,0A3∑−==11,mixixnNA4N=N0+Nx10mA5N0NxµÓ+−=−−)()(2/2/000xxxNNNNdZdZµA6σ1.620M+0.029dA7==∑∑−=−=−11,20,00)/1()/1(miixixmiiiZnNxZZnNZA8=)(/)(/0220220xxxNNdNNdMσσA9−=−=−=−=∑∑=−−−=−−−mixixixxxmiiiZZnNZZZZnNZZ122,222022020,0202020)/1()/1(σσA10−0Z−xZZiZi20σ2xσZiZiGB/T159291995BP(t)t0.5(50)0.5±0.10.5±0.20.5±0.250.5±0.30.5±0.350.5±0.40.5±0.450.5±0.460.5±0.480.5±0.490.5±0.4990.5±0.49990.5±0.499990.5±0.4999990.5±0.49999990.5±0.499999990±0.2533±0.2544±0.6744±0.8416±1.0365±1.2816±1.6449±1.7507±2.0537±2.3257±3.0893±3.7194±4.2851±4.7534±5.1994±5.6120