Kev xaiv ntawm cov thermocouple yuav tsum tau ua raws li cov kev xav tau zoo xws li kev siv qhov kub thiab txias, qhov xav tau qhov tseeb, kev siv huab cua, kev ua haujlwm ntawm cov khoom ntsuas, lub sijhawm teb thiab cov txiaj ntsig kev lag luam.
Ua ntej, xaiv qhov ntsuas qhov tseeb thiab ntsuas qhov ntsuas kub
Thaum ua haujlwm kub yog 1300 ~ 1800 ℃ thiab qhov tseeb yog qhov siab, B-hom thermocouple feem ntau yog siv, qhov tseeb tsis siab, thiab cua tso cai rau kev siv tungsten-rhenium thermocouples, thiab tungsten-rhenium thermocouple yog. Feem ntau siv thaum kub siab tshaj 1800 ℃;
Kev khiav hauj lwm kub yog 1000 ~ 1300 ℃, qhov tseeb yog qhov yuav tsum tau thiab muaj qhov raug siab. S-hom thermocouple thiab N-hom thermocouple muaj;
Feem ntau siv K-hom thermocouple thiab N-hom thermocouple hauv qab 1000 ℃;
Feem ntau siv E-hom thermocouple hauv qab 400 ℃;
T-hom thermocouples feem ntau yog siv rau kev ntsuas ntawm 250 ° C thiab qhov kub tsis zoo. T-hom thermocouples ruaj khov thiab muaj qhov tseeb ntawm qhov kub thiab txias.
Qhov thib ob, kev xaiv ntawm huab cua
S-hom, B-hom, thiab K-hom thermocouples yog tsim rau siv nyob rau hauv muaj zog oxidizing thiab tsis muaj zog txo cua sov;
J-hom thiab T-hom thermocouples yog tsim rau tsis muaj zog oxidizing thiab txo cov cua. Yog tias siv lub raj tiv thaiv nrog huab cua zoo dua, qhov yuav tsum tau ua rau huab cua tsis nruj heev.
Thib peb, kev xaiv ntawm durability thiab thermal teb
Thermocouples nrog cov kab hlau loj loj muaj qhov ua tau zoo dua, tab sis muaj cov lus teb qeeb dua. Rau cov thermocouples nrog lub peev xwm kub loj, cov lus teb qeeb. Thaum ntsuas kub nrog cov gradients loj, kev tswj qhov kub thiab txias tsis zoo nyob rau hauv rooj plaub ntawm kev tswj qhov kub thiab txias. Nws yuav tsum tau lub sij hawm teb ceev ceev thiab ib co degree ntawm durability, yog li nws yog tsim nyog los xaiv ib tug armored ob peb.
Plaub, qhov xwm thiab lub xeev ntawm cov khoom ntsuas los xaiv cov thermocouple
Kev ntsuas kub ntawm cov khoom txav, cov khoom vibrating, thiab cov hlab ntsha siab yuav tsum muaj zog txhua yam. Chemically polluted cua xav tau cov raj tiv thaiv. Nyob rau hauv cov ntaub ntawv ntawm hluav taws xob cuam tshuam, yuav tsum muaj kev rwb thaiv tsev ntau dua.
Thib tsib, cov txheej txheem xaiv
Qauv—Tus lej Kawm Tiav—Kev tawg-pov thawj-theem raug—Kev teeb tsa thiab kho hom—cov khoom siv tiv thaiv tube-ntev lossis qhov tob tob
Kev xaiv cov khoom thiab xaj cov lus qhia:
1. Thov qhia thaum xaiv thiab xaj
2. Cov qauv khoom
3. Indexing naj npawb
4. Cov khoom siv tiv thaiv raj thiab txoj kab uas hla
5. Kev tiv thaiv raj tag nrho ntev L thiab qhov tob tob
6. Kho hom ntaus ntawv
7. Qhov ntsuas qhov tseeb ntawm cov khoom
8. Hom threaded fixing ntaus ntawv uas tsis muaj cim thaum txiav txim yog tsau sab nraud xov M27 × 2 (tus so ntawm threaded fixing hom yuav tsum tau qhia)
9. Cov neeg uas tsis ua raws li cov qauv ntawm cov khoom uas tau hais los saum toj no vim qhov kev xav tau tshwj xeeb ntawm cov neeg siv khoom thiab xav tau cov khoom tsim tshwj xeeb. Thov qhia koj cov kev cai tshwj xeeb thiab hu rau lub luag haujlwm lub luag haujlwm ntawm peb lub tuam txhab rau kev txiav txim tshwj xeeb.
10. Kev xaiv cov khoom siv thermocouples ntawm qhov sib txawv ntawm qhov kub thiab txias
Rau kev xaiv cov thermocouples, ua ntej xaiv lub thermocouple thiab lub tes tsho tiv thaiv raws li qhov txwv ntawm qhov ntsuas kub thiab qhov chaw siv, thiab thib ob xaiv qhov tshwj xeeb thiab qhov ntev ntawm lub thermocouple raws li cov qauv thiab cov yam ntxwv ntawm cov khoom ntsuas.
Thermocouples tuaj yeem muab faib ua ntau hom qauv: hom kev lag luam dav dav, hom Kaizhuang, hom kev ua haujlwm siab thiab hom tshwj xeeb thermocouple.
Thib rau, muaj cov nram qab no hom kev lag luam dav dav thermocouples:
(1) Cov nickel-chromium-constantan thermocouple yog cov khoom siv hluav taws xob uas tsis muaj nqi. Nws cov electrode zoo yog npib tsib xee-chromium alloy (EP), thiab nws cov electrode tsis zoo yog tooj liab-nickel alloy (EN). Lub sijhawm siv sijhawm ntev yog 600 degrees, thiab siv sijhawm luv luv yog 800 degrees. Qhov tseem ceeb tshaj plaws yog tias qhov ntsuas kub ntawm lub tshuab hluav taws xob yog qhov loj tshaj plaws, uas yog, qhov siab tshaj plaws yog qhov siab tshaj plaws, tab sis nws yooj yim oxidized, thiab tus lej ntsuas yog E.
(2) Lub thermocouple tooj liab-constantan yog ib qho pheej yig hlau thermocouple. Nws cov electrode zoo yog tooj liab ntshiab (TP) thiab nws cov electrode tsis zoo yog constantan (tooj liab-nickel) alloy (TN). Ib qho thermocouple feem ntau siv rau hauv qhov kub thiab txias. Qhov ntsuas kub yog -200 ~ 300 ℃. Lub thermoelectric hlau muaj qhov nruab nrab zoo, ruaj khov, zoo agility, tsis tshua muaj nqi, thiab tus lej ntsuas yog T. Kaizhuang hom thermocouple yog los nruab cov hlau hluav taws xob kub hauv lub tes tsho hlau nrog cov khoom siv insulating, thiab txheej txheem nws mus rau hauv cov khoom sib xyaw ua ke, thiab tom qab ntawd txiav nws raws li qhov xav tau ntev, thiab ua tiav nws qhov ntsuas kawg thiab siv kawg. Ua cov thermocouple ntawm Kay hom. Hom thermocouple no tuaj yeem ua tau nyias thiab ntev, thiab tuaj yeem khoov tau raws li kev ntsuas xav tau hauv kev siv. Nws qhov ntsuas kub yog qhov dav, cov lus teb ceev ceev, lub peev xwm ntawm qhov kub ntawm qhov sib txuas yog me me, thiab kev pabcuam lub neej ntev. Nyob rau tib lub sijhawm, nws muaj lub zog ua haujlwm siab, siab ua haujlwm siab, dav adaptability, zoo yooj, yooj yim installation thiab siv, thiab daim ntawv thov dav heev.
(3) Platinum-germanium 10-Platinum thermocouple yog ib qho khoom muaj nqi hlau thermocouple. Cov nominal muaj pes tsawg leeg ntawm qhov zoo electrode yog platinum-germanium alloy (SP) muaj 10% germanium, thiab cov electrode tsis zoo yog platinum ntshiab (SN). Lub sijhawm siv sijhawm ntev yog 1300 ℃, thiab siv sijhawm luv luv yog 1600 ℃. Nws muaj zog tiv thaiv oxidation muaj nuj nqi thiab yuav tsum tau siv tas li nyob rau hauv oxidizing thiab inert ib puag ncig. Nws feem ntau yog siv rau kev ntsuas kub nrog cov kev xav tau ntau dua, tab sis nws yog kim, tsis muaj zog txhua yam, thiab qis thermal electromotive quab yuam. Nws yuav tsum tau nruab nrog cov cuab yeej tso saib nrog lub zog siab, thiab tus lej kawm tiav yog S.
(4) Cov nickel-chromium-nickel-silicon thermocouple yog cov khoom siv hluav taws xob pheej yig. Nws cov electrode zoo yog npib tsib xee-chromium alloy (KP) muaj 10%, thiab nws cov electrode tsis zoo yog npib tsib xee-silicon alloy (KN) muaj 3% silicon. Qhov tsis zoo electrode yog magnetic. Lub sijhawm siv sijhawm ntev yog 1000 ℃, thiab siv sijhawm luv luv yog 1200 ℃. Lub peev xwm thermoelectric yog 4 ~ 5 npaug ntau dua li S-hom thermocouple. Lub linearity yog zoo heev thiab kev siv kub ntau yog dav. Nws yog qhov tsawg tshaj plaws chaotic ib qho ntawm pheej yig hlau thermocouples. Nws yog qhov tsim nyog rau kev siv tas li hauv qhov chaw oxidizing thiab inert. Tus nqi pheej yig thiab qhov yuam kev yog li 7 ° C. Txawm li cas los xij, cov thermoelectrode tsis yooj yim los ua ib yam nkaus thiab yooj yim rau oxidize, tshwj xeeb tshaj yog nyob rau hauv lub xeev kub, nws stability tsis zoo, thiab tus lej ntsuas yog K.
