安全阀在线检测技术PPT课件

.,1,Onlinetestforsafetyvalve安全阀在线检测技术,SafetyValveonlinetestisadevelopmentofnewtechnology,itsapplicationtoresolvethein-servicesafetyvalveperiodicinspection,Chineseregulationsrequirethesafetyvalveshouldbetestedatleastonceayear.Duringonlinetest,Theplantneednotshutdownandasusualrunning.安全阀在线检测技术是一项发展中的新技术，它的应用在一定程度上可解决在役安全阀的周期性定检,中国法规要求安全阀每年至少校验一次.装置不需停车,生产照常进行。,.,2,Applicationandcharacter适用范围及特点,Alltestprocessdoesnottouchtheworkofmediainsafetyvalve,sotheuseofinstrumentisindependentofthemediatypes,internalpressureandtemperature.检测过程不接触工作介质，因此，理论上讲该仪器的使用与检测安全阀的工作介质种类(气体，液体）及介质压力、温度无关。Forthemediumofgranular,easy-cokesafetyvalve,shouldnotuseonlinetest.对于介质是颗粒状、易结焦的安全阀，不宜使用在线检测。Forfull-sizemodelsofspring-loadedsafetyvalvecalibration.用于各种规格型号的弹簧式安全阀校验,.,3,Itdonotstoptheplantandmeasurethevalvesetpressure,backpressure,openheight,withouttheneedtoimprovethesystempressure.它能在生产装置不停车状况下测量安全阀的开启压力、回座压力、开启高度，而不需要提高系统压力Ifthesafetyvalveleakagetheinstrumentcanbeforcedtoclosethediscand,withoutaffectingthevalueofsetpressure.回座后有泄漏时可用强关系统将阀瓣强行关闭,而不影响定压值,.,4,Specifications技术指标,Measurementerrorofsetpressurenotexceed2%开启压力测量误差2%Theuseofambienttemperature-1080使用环境温度-1080Theenvironmentalhumiditynotexceed85%使用环境湿度85%,.,5,Economicefficiency经济效益,Becauseofperiodictestsafetyvalvetoleadstoprunningplantisunnecessary.Onlinetestcansolveandavoideshutdownplantcausedbyhuman,materialofloss.为企业节省了因停车检测安全阀而造成的人力、物力、财力的损耗，大大的为企业降低了成本，提高了生产效益。Beforetheoverhaulwebegantopickupthesafetyvalveoftheprocessisolatewithdifficultiesandneednotoff-linetodisassemblechecking,especiallyforthelarge-caliberorhigh-positionvalves,savingcostsandreduceduration.大检修开始停车时筛选出工艺隔离困难以及不需要离线解体检修的安全阀，尤其是大口径高部位阀,节省费用和工期.,.,6,Onlinetestresults在线校验效果,Wehavetestedsafetyvalveon-lineabout150piecessince2007,noneofirregularleakage.Theconclusionoftheonlinetesttechnologyismorereliableandbeworthextending.从2007年开始我们已经进行在线校验的安全阀大概150台,均未出现非正常泄漏,该技术比较可靠,值得推广应用。,.,7,Emergencyresponseplan应急预案,Forthesafetyvalvewiththeflammableandexplosivemediumonlinetest,weshouldfirsttestexplosionsite,anotherfortheflammableandexplosivegasleakagefromthevalvestem,theresponsetothescenetoconductadetailedanalysisofthesituation,connectnitrogentopurge,selectexplosion-prooftool,equippedwithdrypowderfireextinguishers.Whennecessary,theoperatormustwearaanti-staticclothing.对介质为易燃易爆的安全阀在线检测时，应首先对现场进行测爆，另外对于易燃易爆气体从阀杆处有泄漏危险的安全阀检测时，应对现场情况进行详细分析，接氮气吹扫，使用防爆工具，配备干粉灭火器。必要时操作人员必须穿戴防静电服具。,.,8,Emergencyresponseplan应急预案,2.Theoperatormustcleartheworkingstatesofsafetyvalve(medium,pressure,temperatureandsoon).Preventionofsplashandburnforthehightemperatureisneeded.现场校验人员必须清楚安全阀的工作状况（工作介质，压力，温度等），对高温安全阀应有防溅、防烫措施。,.,9,Emergencyresponseplan应急预案,3.Alwayskeepintouchwithprocesswhiletestingandtakeeffectiveemergencyactionsintheunusualstate.应时刻与工艺人员保持联系，对检测时发生的异常情况采取有效应急措施。4.Ifthesa