电磁阀在石油化工装置安全联锁保护过程中的设计与应用

©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.:(1971-),,,1993,,,(,100011):,:;;;;;;:TP214;TP215:B:100727324(2003)0420012204DesignandApplicationofSolenoidValveinSafetyInterlockofPetrochemicalUnitTANGDan2rong(SinopecEngineering.Inc.,Beijing,100011,China)Abstract:Thedesignwayandpointingoutsomeproblemswhichneedtobenoticedbysupplyingsomepracti2calexamplesofsolenoidinsafetyinterlockisintroduced.Itisareferenceforsamedesignapplication.Keywords:solenoidvalve;safetyinterlock;powersupply;reset;practicalexample;orlogicalcontrol;andlogiccontrol,,,,,,,1,:220VAC24VDC220VAC,,,220VAC,,24VDC,24VDC,,2.5mm2,7.41/km,650m,10W()1)P=IVSI=P/VS=10/24=0.416AI,A;P,W;VS,V2)L=650m2=1.3kmR=1.37.41=9.63V=IR=0.4169.63=4.0VL,m;R,;V,VVS-V=24-4.0=20.0V20.0V,,2003,4:12AUTOMATIONINPETRO2CHEMICALINDUSTRY©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.),24V,,,,20.0V()5%,-5%VSmin=24(1-5%)=22.8VI=10/22.8=0.438AV=IR=0.4389.63=4.22VVSmin,VVSmin-V=22.8-4.22=18.58V18.58V,,2,,,,,,,,,,,,,,,,,,,3,(NO),,,;,,,,(DirectActing2Universal),,,3.1((FC))((FO)),11,1,2,,,1,2,,,(FO),3.2,2213,42,A,B,14,32,B,AA,B2,,,3141©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(FO),(FC)(FO),,,()0,,,,NO,NCU(),,,,,,,4,1,2,/,1,2,,,,,3.4(),PSS;,(),()5,6455A,B1,2,,PSS,A1,,A2,B1,A2,,B1,,B2,B2,PSS,1,2,,B2,412003©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(FO),66A,B1,2,,PSS,A2,B1,,,B2,B,PSS,2,B,(FC),3.57,8,(),:,77A,B1,2,B,PSS,A1,B,,,B1,2,A,1,,(:B23)PSS,1,2,,(:B32),(FO),B,8,A,B1,2,,PSS,A2,B,,,B1,2,A,1,2,,PSS,1,2,,(FC),,784,,,,5141