:CN23-1249(2002)02-0058-02:2002-01-14:(1967-),,,,19871,2,2(11,150040;21,150046):,,:;;;;:TK22316:BPriciplesofApplicationofBoilerDrumWaterLevelMonitoringSystemLIUYong-ge1,ZHUHong2,NANQing-zhu2(1.HarbinThermalPlant,Harbin150040,China;2.HarbinBoilerCo.,Ltd.,Harbin150046,China)Abstract:Describingthefeaturesandapplicationprinciplesofdrumwaterlevelmonitoringsystemduringboilerruning,whichplaysanimportantroleinboilersafetyoperation,characterizedbyclearprinciple,simplicity,applicability,safetyandreliabilityKeywords:waterlevelmeasurement;waterlevelmonitoringandalarm;waterlevelmonitoringandmea2suring;sensor;waterleveldevice0,,,,,,1,,,,11220025BOILERMANUFACTURINGNo2May.2002©1995-2004TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.2:2100mm,,,,800mm()HoP0:P0=P+-P-=(L-l)w+la-H0w+(L-H0)s=L(w-s)-l(w-a)-H0(w-s):w,kgf/m3;s,kgf/m3;a,kgf/m3H0H,PP=P0-H(w-s),Ll,,P,,I,,2,,(),,,(),(),,3,,,,,,,,,,,,,,,,[1]1[D]1:,1993.[2],.[D].:,1992.(:)952,:©1995-2004TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.