Lub neej ntev npaum li cas ntawm flange -mounted, hlws ris lub thawv- hom platinum tiv thaiv tus pas ntsuas kub

Lub neej ntev ntawm flange-mounted, junction box- hom platinum tiv thaiv tus pas ntsuas kub feem ntau yog nyob ntawm 5 txog 10 xyoo. Lub neej ntev yog nyob ntawm qhov chaw ua haujlwm, kev teeb tsa zoo, qib txij nkawm, thiab kev tsim qauv. Nyob rau hauv cov xwm txheej zoo (xws li qhov kub thiab txias, tsis muaj zog corrosion, kev co tsawg, thiab kev sib khi zoo), siab - cov khoom zoo tuaj yeem ua haujlwm ruaj khov rau ntau tshaj 10 xyoo. Txawm li cas los xij, nyob rau hauv ib puag ncig kev lag luam uas muaj kev kub ntxhov siab heev - caij tsheb kauj vab, cov av noo siab, muaj zog corrosion, los yog kev vibration loj heev, lub neej yuav luv luv mus rau 2-5 xyoos. Lub ntsiab tsis ua hauj lwm stems los ntawm cov neeg kho tshuab qaug zog thiab foob degradation ntawm lub txav qauv, es tsis yog lub platinum kuj kub sensing caij nws tus kheej.

 

I.Hom Lifespan Decline Txoj Kev

Xyoo 1-2: Rwb thaiv tsev stabilizes ntawm 100-500 MΩ, tsis kam drift<0.1 Ω/year

Xyoo 3-5: Kev laus me ntsis ntawm lub nplhaib sealing, rwb thaiv tsev tsis kam poob mus rau 10-50 MΩ, nrog kev hloov pauv tsis tu ncua.

Xyoo 5-7: tooj liab patina thiab dej stains tshwm nyob rau hauv lub thawv hlws ris, rwb thaiv tsev<1 MΩ, resistance drift >0.5 Ω

Xyoo 7 thiab saum toj no: Lead hlau qaug zog tawg qhov tshwm sim nce ntau, qhib qhov hluav taws xob tsis ua haujlwm ntau tshaj 60%.

Failure Warning Threshold: Thaum lub rwb thaiv tsev tiv thaiv tsis tu ncua poob qis dua 10 MΩ, los yog tus nqi tiv thaiv deviates los ntawm tus nqi nominal los ntawm ntau tshaj ± 0.5 Ω, yuav tsum pib qhov kev ntsuam xyuas hloov, es tsis tos kom tsis ua tiav.

 

II.Engineering xyaum ua rau Extending Lifespan

Lead Wire Flexibility Redundancy: Reserve Ntau dua lossis sib npaug li 200mm ntawm cov kab nkhaus ntawm lub qhov hluav taws xob sib txuas, tso cai rau nws dai ib txwm nyob hauv "S" zoo, tsis txhob muaj kev txwv nruj thiab tshem tawm kev ntxhov siab.

Kev Txhim Kho Cov Txheej Txheem: Siv fluororubber (FKM) lossis silicone roj hmab (VMQ) sealing rings, nrog rau qhov kub thiab txias ntawm -40℃txog 200℃thiab kev laus tiv taus ntau tshaj li ntawm nitrile roj hmab ntau dua 50%.

Clearance Control: Xyuas kom lub flange txav tau ntau dua lossis sib npaug li 5 hli ntawm qhov chaw zawv zawg dawb thaum lub sijhawm teeb tsa. Kev quab yuam kev sib raug zoo lossis vuam raug txwv los xyuas kom meej thermal expansion nyiaj.

Institutionalized Condition Monitoring:

Txhua 3 lub hlis: Txheeb xyuas qhov xwm txheej ntawm lub nplhaib sib khi thiab kom qaug zog ntawm cov hlau lead hlau khoov.

Txhua 6 lub hlis: Kev ntsuas kev tiv thaiv hluav taws xob nrog 500V megohmmeter (Ntau dua lossis sib npaug rau 100MΩ tau txais).

Txhua xyoo: Manually sim qhov hloov pauv ntawm qhov sib koom ua ke, ntxuav cov neeg sib cuag, thiab hloov cov roj nplua nyeem.

Txhua 2 xyoos: Xa cov khoom mus rau lub qhov cub hluav taws xob rau kev sib piv tus nqi; Kev sib txawv Tsawg dua lossis sib npaug rau ± 0.1Ω.

Kev pom zoo ntawm kev lag luam: 70% ntawm qhov kawg- ntawm - teeb meem hauv lub neej tshwm sim los ntawm qhov tsis muaj kev saib xyuas, tsis yog cov khoom qub qub. Kev tu tsis tu ncua, nruj, thiab kev sim tuaj yeem ua rau lub neej ntev mus rau qhov kev txwv tsim.

 

III.Lifespan Reference nyob rau hauv txawv kev ua haujlwm

Hom kev ua haujlwm	Nruab Nrab Lifespan	Kev piav qhia
Ordinary Industrial Environment (Nyob, Tsis yog{0}}corrosive)	8-10 xyoo	Piv txwv li, cua txias tshuab, kev cob qhia qhuav
Ib puag ncig Corrosive (me ntsis humid, Weakly Acid / Alkaline)	5-7 xyoo	Yuav tsum muaj kev tshuaj xyuas tsis tu ncua ntawm kev sib khi
Muaj zog Corrosive + Particle Abrasion Ib puag ncig	3-4 xyoos	Hnav-cov txheej tiv thaiv tuaj yeem ua rau lub neej ntev li 8-10 npaug
Nquag Siab -Cycling kub (piv txwv li, qhov cub kho cua sov)	4-5 xyoos	Thermal stress yog qhov tseem ceeb ntawm kev laus
Kev tu kom zoo + siab - xaiv zoo	Muaj peev xwm ncav cuag ntau tshaj 10 xyoo	Yuav tsum tau calibration tsis tu ncua thiab cov ntaub ntawv kaw

Technical Basis: Lub anti-corrosion platinum tiv thaiv tus pas ntsuas kub tau dhau 12kV spark micro- qhov tsis pom kev txhawm rau kom ntseeg tau qhov tsis xws luag-dawb tiv thaiv- txheej txheej corrosion thiab txhim kho kev ntseeg tau tag nrho.

Cov lus pom zoo kawg: Lub neej ntev ntawm flanged platinum kuj ntsuas kub tsis yog nyob ntawm tus nqi sensor, tab sis nyob ntawm qhov zoo ntawm kev teeb tsa thiab kev saib xyuas.

Los ntawm kev ua raws li plaub lub hauv paus ntsiab lus ntawm "kev hloov pauv dawb + kev hloov pauv hloov pauv + kaw lub voj kaw + lub sijhawm tshawb pom", ntau tshaj kaum xyoo ntawm kev teeb meem- ua haujlwm dawb tuaj yeem ua tiav, muab sijhawm ntev - tiv thaiv kev tiv thaiv kev lag luam kub.