LNG槽车贮槽绝热结构设计_李兆慈

*,:ZL00249960.6:,1971;,;,:(200030)1954:[phone],13816029838E-mail:[e-mail]*李兆慈徐烈张洁孙恒().LNG槽车贮槽绝热结构设计.天然气工业,2004;24(2):85~87液化天然气槽车是LNG陆地输送的重要工具,而将高真空多层绝热方式应用于LNG槽车在国内尚属首次介绍了高真空多层绝热的原理,并与真空粉末绝热等其他绝热形式进行了分析比较,指出高真空多层绝热是一种超级绝热方式,具有导热系数低绝热空间小有效质量轻等特点,很适合低温运输容器的绝热还介绍了LNG槽车运输贮槽的绝热材料选择绝热结构设计及日蒸发率计算等,并以40m3LNG运输槽车为例,对无损贮存时间进行了计算结果显示,40m3LNG运输贮槽的日蒸发率小于0.3%,无损贮存时间可达20天液化天然气输送储存装置保温材料绝热条件:(LNG)LNG,LNG11240m3/0.8MPaLNG3,1,LNG122140m3LNGLNG,,2,,2LNG4:();;)()();()13233(W/m#K),,#85#242qWRn+1E(T42-T41),n,,,,132:¹,;º,,2,,,,,LNG,:,;,;LNG,3:D=KFm$TQ1(1):D,m;K,,W/m#K;Fm,m2;$T,K;Q1,W,,,A(2)A=mG=QLbQVe@100%(2):mLNG,m=QLb,kg/d;GLNG,G=QVe,kg;Q,kJ/d;LbLNG,kJ/kg;QLNG,kg/m3;Ve,m3LNG,,,,(),,,,,,:€S=1.5@(2.2125-1.66…p+0.83…p2)@(3.628U3-6.909U2+5.253U+0.268)@(-204H20+24.08H0+0.8)U=0.1~0.88(3)€S=1.5@(2.2125-1.66…p+0.83…p2)@(-10397U3+29458U2-27738U+9684.44)(-204H20+24.08H0+0.8)U=0.88~1.00(4):U;€S,€S=SsS(5)…p,…p=p-p0pcr-p0(6)H0,H0=3600qFM0c0T0(7)(5)~(7):S;Ss;p;p0;pcr;q;F;M0;c0;T0#86#20042440m3/0.8MPaLNG4,88%,,20d0.1Pa,6.5d;1Pa,4d;10Pa,3d,(),142LNG,86%~90%(1),LNG,(2),(3)LNGZQZ9400GDY,561993:##,,561,.(LNG).,2002;22(3):89~912,,,..:ZL00249960.63..:,19994XuL,LiZCetal.In:DonJCleland,ChrisDixon,eds.Pro20thInternationalCongressofRefrigeration.Interna-tionalInstituteofRefrigeration,Sydney,1999(2002-12-02)#87#242groundtoverifythereservesofaquifergasreservoirsandana-lyzeproductionperformance.Itisveryimportantforearlywa-tercontrolinaquifergasreservoirstousetheearlyproductiontestingdataforstudyingtheaquiferbehaviorandwaterinvasionperformance.Basedoncoatsmodel,AIFmodelisstudiedundertheconditionsofnon-continuousgas-waterboundaryandnon-continuouspressuretestingofgasreservoirs.Thestudyshowsthatinthiscase,thecharacteristicvaluesofAquiferInfluenceFunctionanalysisofwaterinvasionperformanceisobtained,andtherelativesolutionisproposed.Thismethodhasmoreim-provementthanLPmethod.Realcasestudyindicatesthatthemethodcannotonlyacquiretheaquiferbehaviorandwaterin-vasionperformanceexactly,butalsoreflecttheaquiferbehaviorandwaterinvasionperformancetrappedbyfaultscorrectly.Atthesometime,itpointsoutthatAIFofsmallaquifertrappedbyfaultsisaparabola.SUBJECTHEADINGS:Heterogeneousreservoir,Waterinvasion,Performanceanalysis,Reserve,MathematicalmodelXiongYu(associateprofessor),bornin1968,isstudyingfordoctoraldegree.Add:Nanchong,Sichuan(637001),ChinaTel:[phone]Cell:13002827852E)mail:[e-mail]RVEYRELA-TIVEPERMEABILITYOFCONDENSATERESER-VOIRS1)GuoXiao,GuoPing,LiuJianyi(SouthwestPetroleumInstitute)andShuZhuangzhi(DianQianGuiBranch,PCL).NATUR.GASIND.v.24,no.2,pp.82~84,2/25/2004.(ISSN1000-0976;InChinese)ABSTRACT:Sincewithouttestingtechniquestosurveythecriticalcondensatesaturationaccurately,therelativepermeabil-ityofcondensatereservoiristestedusuallywithconventionaloilandgasinChina.Ithasnotbeendonebeforetoconductcoredisplacementtestwithrealbalancedcondensatesystemfortherelativepermeabilitycurveofcondensatereservoirs.WithrealcoresofYahacondensatereservoir,twogroupsofdisplacementtestshavebeenconducted.Forthefirstgroup,Kerosene-nitro-genisinjectedintothecorewithastatizationmethod.Forthesecondgroup,balancedcondensategasisinjectedintothecorewithsteadystatemethod.Theinfluenceofoilandgasrelativepermeabilityontheproductionperformanceofcondensatereser-voirisstudied.Andthefollowingconclusionsareacquired:¹ComparingwiththerelativepermeabilitycurveofKerosene-n-itrogensystem,therelativepermeabilitycurveofgas-condensatesystemmovesrightwardsandthegasrelativepermeabilityde-creasesquickly;ºThecriticalcondensatesaturationofgas-con-densatesystemis20%lowerthanthatofKerosene-nitrogensystem;»Thegasproductivity,GOR,condensaterecoverypredictedwithKerosene-nitrogensystemismuchlowerthanthatpredictedwithgas-condensatesystem,butthereservoirpressuredecreasesslower;¼Gas-condensatesystemdiffersgreatlyfromKerosene-nitrogensystemincondensatesaturationdistributionatthenearwel-lboreareaSUBJECTHEADINGS:Condensatefield,Relativeperme-ability,Testing,Experiment,CriticalsaturationGuoXiao(associateprofessor,Doctor)wasbornin1972.Add:Nanchong,Sichuan(637001),ChinaTel:[phone]Cell:13990791535E)mail:[e-mail]IONFORLNGTANKER1)LiZhaoci,XuLie,ZhangJie,SunHeng(Re-frigerationandCryogenicsInstituteofShanghaiJiaotongUniversity).NATUR.GASIND.v.24,no.2,pp.85~87,2/25/2004.(ISSN1000-0976;InChinese)ABSTRACT:TheLNGtankerisveryimportanttoolforLNGtransportationonland.ItisthefirsttimeinChinaforLNGtankertousethehighvacuummult-ilayerthermalinsula-tion.Thearticleintroducestheprincipleofhighvacuummult-ilayerthermalinsulation,andcomparesthehighvacuummult-ilayerthermalinsulationwiththeotherinsulation,suchasvacu-umpowderinsulation,etc.Thearticlepointsoutthatthehighvacuummult-ilayerthermalinsulationisasuper-insultingway,whichhasthecharacteristicsofsmallthermalconductivity,smallvolume,andlightquality,etc.Itisverysuitableforinsu-lationofthetransportingtankerswithlowtemperature.Also,thearticleintroduceshowtochoicethermalinsulatingmater-ials,howtodesignthethermalstructure,