Ntev npaum li cas hlau - sheathed thermocouple hlws ris lub thawv hom thermocouples kawg
Tso lus
Lub neej ntev ntawm cov hlau- sheathed thermocouple hlws ris lub thawv hom thermocouples yog qhov tseem ceeb rau kev ua haujlwm ruaj khov ntawm cov tshuab ntsuas kub. Vim lawv cov qauv muaj zog thiab kev tiv thaiv zoo, cov thermocouples no tau siv dav hauv siab - qhov cub kub, cov khoom siv tshuaj, thiab cov kab ntau lawm. Lawv lub neej ua haujlwm feem ntau yog nyob nruab nrab ntawm 2 thiab 5 xyoo, tab sis nyob rau hauv cov xwm txheej zoo, nws tuaj yeem txuas ntxiv mus rau ntau tshaj 8 xyoo. Txawm li cas los xij, qhov tseeb lifespan yog cuam tshuam los ntawm ntau yam thiab yuav tsum muaj kev ntsuam xyuas zoo raws li qhov chaw ua haujlwm tshwj xeeb.
I. Cov yam tseem ceeb cuam tshuam rau lub neej
Ua hauj lwm kub thiab Thermal Cycling zaus
Ntev- lub sijhawm ua haujlwm ntawm qhov kub thiab txias ze rau cov khoom siv txwv (xws li K- hom thermocouples tshaj 900℃) ua kom "ntsuab rot" ntawm cov thermoelements, kev laus ntawm cov khoom siv rwb thaiv tsev, thiab oxidation ntawm cov raj tiv thaiv. Feem ntau pib-ups thiab kaw ua rau thermal expansion thiab contraction, ua rau qaug zog ntawm sealing qauv thiab txo kev cia siab.
Environmental Corrosiveness thiab nruab nrab yam ntxwv
Kev sib cuag nrog cov roj corrosive xws li sulfur thiab chlorine, lossis cov xov xwm xws li molten ntsev thiab ncu, yuav ua rau corrosion thiab perforation ntawm lub raj tiv thaiv los yog degradation ntawm cov thermoelements. Piv txwv li, thermocouples siv nyob rau hauv cement cog kilns yuav muaj lub neej luv luv mus rau tsawg dua 3 xyoos vim alkaline hmoov av corrosion.
Mechanical Vibration thiab Installation Zoo
Thaum ntsia ze ze ntawm qhov chaw vibration xws li kiv cua thiab compressors, yog tias tsis muaj kev vibration damping ntsuas, lub hlws ris lub thawv bolts yuav loosen, ua rau lub foob tsis ua hauj lwm thiab tom qab sab hauv dej ingress thiab luv circuits.
Cov khoom siv tiv thaiv tube thiab cov txheej txheem tsim khoom
Cov raj tiv thaiv ua los ntawm cov khoom sib txawv muaj qhov sib txawv kub thiab hnav tsis kam. Piv txwv li, 316L stainless hlau raj tuaj yeem ua haujlwm ruaj khov rau ntau tshaj 5 xyoos hauv qab 600 degree, thaum lub raj carbon steel zoo tib yam tuaj yeem ua rau oxidation thiab tawg tsis pub dhau 2 xyoo nyob rau hauv tib lub sijhawm.
II. Siv Lifespan Raws li cov kev ua haujlwm zoo
|
Daim ntawv thov Scenario |
Hom Lifespan |
Kev piav qhia |
|
High -kub qhov cub (<1000℃) |
3-5 xyoos |
Siv corundum los yog silicon carbide tiv thaiv cov hlab ntsha tuaj yeem txuas lub neej mus txog 8 xyoo. |
|
Chemical reactors (nruab nrab corrosion) |
2-4 xyoos |
Hastelloy lossis 316L stainless hlau raj tau pom zoo. |
|
Cement kilns |
1-3 xyoos |
Kub kub, siab plua plav, thiab alkaline corrosion tam sim no. |
|
Circulating fluidized txaj boilers |
8-12 lub hlis |
Ib puag ncig hnav hnyav, yuav tsum tau hloov tsis tu ncua. |
|
Ceramic roller kilns |
Kwv yees li 5 xyoos |
Ib puag ncig ruaj khov, tsis tshua muaj thermal cycling zaus. |
III. Kev ntsuas tseem ceeb txhawm rau txuas lub neej ua haujlwm
Kev xaiv kom raug: Xaiv cov khoom siv tiv thaiv kom tsim nyog raws li qhov kub thiab txias, corrosion, thiab hnav. Piv txwv li, siv cov tungsten carbide alloy txheej rau siab -kub hnav- tiv taus cov thermocouples tuaj yeem ua rau lub neej nce mus txog 1-5 zaug.
Standardized Installation: Xyuas kom lub hlws ris lub thawv yog kaw kom zoo thiab lub qhov hluav taws xob qhov hluav taws xob lub ntsej muag downwards tiv thaiv dej los nag los yog condensation los ntawm kev nkag; qhov tob qhov ntxig yuav tsum yog 8-10 npaug ntawm txoj kab uas hla ntawm lub raj tiv thaiv kom tsis txhob muaj kev kub ntxhov.
Regular Maintenance: Check the aging of the sealing ring quarterly, tighten the wiring terminals every six months, and test the insulation resistance annually (should be >100MΩ).
Tsim Cov Ntaub Ntawv Tswj Xyuas Cov Ntaub Ntawv: Sau lub sijhawm teeb tsa, calibration keeb kwm, thiab cov ntaub ntawv yuam kev kom hloov ntawm "kev hloov pauv" mus rau "kev saib xyuas kev kwv yees."
