Daim Ntawv Thov ntawm Thermocouple Tus pas ntsuas dej hauv cov tshuab ua kas fes

Thermocouple cov cua sov yuav tau hu rau kev sib cuag ntsuas ntsuas kub. Nws ntsuas ntsuas kub raws cov ntsiab cai ntawm thermoelectric effect, tseem hu ua Shobeck nyhuv, thiab yog ib qho ntsuas kub uas ntsuas tau ntsuas hauv cov twj paj nruag. Kab lus no feem ntau qhia rau daim ntawv thov ntawm Thermocouple kub hauv hydrocouple engineering rau cov nyeem 'siv.

1. Cov txheej txheem yooj yim ntawm thermocouple
Thermocouple cov cua sov yuav tau hu rau kev sib cuag ntsuas ntsuas kub. Nws ntsuas ntsuas kub raws cov ntsiab cai ntawm thermoelectric effect, tseem hu ua Shobeck nyhuv, thiab yog ib qho ntsuas kub uas ntsuas tau ntsuas hauv cov twj paj nruag. Txuas cov khoom lag luam A thiab B ntawm cov khoom sib txawv rau hauv lub voj kaw, nrog ib qho kawg hauv kev sib cuag nrog ntsuas ntsuas kub (lossis ua haujlwm kawg hu ua ntej Yog hais tias qhov kub t thiab t {{{{0} ntawm qhov ntsuas xaus thiab b nyob rau hauv lub voj voog, uas yog hu ua cov nyhuv pom, cov nyhuv thermoelectric. Qhov loj me ntawm EAB sib txawv nrog cov khoom ntawm cov neeg coj thiab B, raws li qhov kub t thiab t {3}} ntawm ob qho kawg. Hom kev ncig ntawm Circuit Coam no hu ua cov qauv thermocouple. Hauv kev siv cov tswv yim, ib qho kawg ntawm A thiab B yog Welded ua ke ntawm qhov ntsuas kub thiab muab tso rau ntawm qhov ntsuas kub thiab muab tso rau ntawm qhov chaw sib cuag ntawm qhov siv kawg ntawm kev siv tau ruaj khov. Cov peev txheej ntsuas tau los ntawm cov khoom lag luam tso tawm tsuas yog sib txawv nrog ntsuas kub ntsuas.
Thaum ib qho khoom siv thib peb hlau txuas nrog CALCOCOULE Circuitle, ntev li ntev tau qhov kub ntawm cov khoom siv yog tib yam, yuav tsis muaj kev cuam tshuam los ntawm kev sib txuas ntawm cov hlau thib peb mus rau hauv Circuit Court. Yog li ntawd, thaum siv thermocouple rau ntsuas kub, ntsuas ntsuas ntsuas tuaj yeem txuas nrog ntsuas qhov ntsuas thermoelectric tuaj yeem txiav txim siab.
Raws li kev sib txheeb ntawm thermoelectric muaj peev xwm thiab kub ua haujlwm. Tuaj yeem ua rau hauv lub rooj ntsuas dej thermocouple. Cov rooj kawm tiav yog tau txais nyob rau hauv qhov xwm txheej ntawm pub dawb xaus rau =0 degree. Sib txawv thermocouples muaj cov ntawv kawm tiav tiav.
Hauv kev tshawb xav, txhua hom ntawm tus neeg coj tau teeb tsa rau hauv ib qho thermocouple, tab sis qhov tseeb, tsis yog txhua cov ntaub ntawv tuaj yeem siv los ua qhov thermocouple. Yog li ntawd, cov khoom siv thermoelectric electrode yuav tsum ua kom tau raws li cov hauv qab no:
(1) Cov khoom siv thermocole tuaj yeem tsim lub peev xwm siab thermoelectric thaum lub sijhawm thermoelectric muaj peev xwm dua linear los yog kwv yees linear ib leeg tus nqi kev sib raug zoo;
(2) Nws tuaj yeem ntsuas kev ntsuas kub siab thiab tau thov kev ua haujlwm thoob plaws hauv qhov kub ntau. Tom qab siv ntev ntev, nws lub cev thiab tshuaj lom neeg nrog rau cov yam ntxwv thermoeltric tseem nyob ruaj khov;
(3) Cov ntaub ntawv yuav tsum muaj qhov ntsuas kub tsawg tsawg, kev cuam tshuam hluav taws xob tsis zoo, kev ua haujlwm zoo, thiab muaj peev xwm me me; Kev ua kom zoo tshaj plaws, yooj yim rau huab hwm coj ntau lawm thiab hloov, thiab yooj yim rau kev tsim cov kev sib koom ua ke lub rooj;
(4) Cov ntaub ntawv kho tshuab zoo thiab cov khoom siv tsis zoo;
(5) cov khoom siv nplua nuj thiab pheej yig pheej yig.
Txhawm rau kom ntseeg tau tias txoj kev ntseeg siab thiab ruaj khov ntawm thermocoumles, cov cai yuav tsum tau ua hauv qab no:
(1) lub vuam ntawm ob lub thermoelectric cov hluav taws xob uas ua rau qhov thermocouple yuav tsum yog khov kho thiab ruaj ntseg;
(2) ob lub thermoelectric cov hluav taws xob yuav tsum tau ua kom zoo los ntawm ib leeg los tiv thaiv luv luv circuits luv;
(3) kev sib txuas ntawm cov xaim hluav taws xob thiab qhov kawg ntawm lub thermocouple yuav tsum yooj yim thiab ntseeg tau;
(4) Lub tes tsho tiv thaiv yuav tsum ua kom muaj kev sib cais txaus ntawm lub thermoelectric electrode thiab kev phom sij. Cov yam ntxwv ntawm Thermocouple fais fab muaj xws li:
(1) ntsuas ntsuas siab yog qhov tseeb. Vim tias Thermocouple yog nyob rau hauv kev sib cuag ncaj qha nrog ntsuas ntsuas thiab tsis cuam tshuam los ntawm cov nruab nrab hauv nruab nrab.
(2) ntsuas dav ntau. Feem ntau siv thermocouples muaj peev xwm ntsuas tsis tu ncua los ntawm {{1} {{{4 4}} degree (xws li tungsten rhenium).
(3) kev tsim kho yooj yim thiab siv tau yooj yim. Thermocouples feem ntau muaj ntawm ob hom hlau hlau, thiab tsis txwv los ntawm qhov loj me lossis qhib. Lawv muaj tes tsho tiv thaiv sab nraud, ua rau lawv siv yooj yim heev. Thermocouple yog qhov ntsuas kub siab uas tuaj yeem hloov cov cim kub hauv thermoelectric muaj peev xwm teev cov cim. Los ntawm kev koom tes nrog cov khoom ntsuas hluav taws xob, ntsuas qhov ntsuas kub tuaj yeem ntsuas tau.
2. Xaiv ntawm Thermoelectric tus pas ntsuas kub
Feem ntau siv thermocouples feem ntau muab faib ua ob pawg: qauv thermocoorples thiab cov thermoco zog. Tus qauv thermocouple yog hais txog ib lub thermocouple uas muaj peev xwm sib raug zoo, thiab nws muaj cov qauv kev sib raug zoo, thiab nws muaj cov khoom sib txuam nrog kev xaiv. Tsis yog qauv thermocoen tsis yog raws li dav siv lossis ntawm tib qho kev txiav txim ntawm qhov ntau li qauv thermoco, thiab feem ntau tsis muaj kev sib koom tes ntawm cov lus sib txuas lus. Lawv feem ntau yog siv rau kev ntsuas hauv qee lub sijhawm tshwj xeeb. Qauv kho tho kev kub yog tsim raws li IEC ****** cov qauv. Lub cim sib faib ntawm thermocouples feem ntau muaj xws li s, b, n, y, j, thiab t presed rau cov nqi qis-tuab.
Cov yam ntxwv ntawm S nplai yog cov tshuaj antioxidant muaj zog, haum rau kev siv kub ua ntej ntawm 1400 degree siv kub ntawm 1600 degree. Ntawm txhua qhov kev ntsuas thermoco, qib raug ntawm cov cim teev S nplai * * * Siab thiab feem ntau yog siv los ua tus qauv thermocouple;
Piv nrog S nplai, cov r nplai yuav luag zoo ib yam tshwj tsis yog rau kev 15% nce ntxiv hauv thermoelectric peev xwm;
Bivis Mark muaj lub peev xwm me me thermoelectric muaj peev xwm ntawm chav sov, yog li them cov xov hlau feem ntau tsis xav tau thaum ntsuas. Nws lub sijhawm siv ntev yog 1600 degree, thiab nws lub sijhawm siv luv luv yog 1800 degree. Nws tuaj yeem siv hauv oxidizing lossis nruab nrab ntawm cua, nrog rau kev siv luv luv hauv lub tshuab nqus.
Cov yam ntxwv ntawm n nplai yog muaj zog he-este distability ntawm 1300 cov kev sib tw ntawm lub voj voog thermal, thiab zoo tsis kam rau nuclear iradiation thiab qhov kub tsawg. Nws tuaj yeem hloov cov s nplai thermocouple;
Cov yam ntxwv ntawm K nplai yog muaj zog antioxidant kev ua tau zoo, haum rau kev siv tshuaj ntsuam tas li, nrog kev siv hluav taws xob ntev ntawm 1000 degree siv tau kub ntawm 1200 degree. Dav siv nyob rau hauv txhua thermocouples;
Tus yam ntxwv ntawm E-Division Mark yog tias nws muaj qhov loj thermoelectric muaj peev xwm thiab siab rhiab ntawm cov thermocouples. Haum rau kev siv tas mus li hauv oxidizing thiab inert cua, nrog ib tug kub ntau ntawm {1}} degree;
Tus yam ntxwv ntawm J Daj Lij Lij yog tias nws tuaj yeem siv rau hauv kev txwv kub oxidizing (nrog rau ib qho kub siab tshaj plaws ntawm 950 degree), thiab yog tiv taus h2 thiab co roj corrosion. Nws yog ib qho siv nyob rau hauv kev siv tshuaj lom thiab siv tshuaj lom neeg;
Cov yam ntxwv ntawm T-teev yog tias nws muaj qhov tseeb tshaj plaws qib ntawm txhua qhov tsawg tus nqi hlau thermocots, thiab feem ntau yog siv los ntsuas kub hauv qab 300 degree.
Vim yog qhov tseeb tias cov ntaub ntawv ntawm thermocouples feem ntau kim (cov xov tooj tsis tshua muaj zog) Nws yuav tsum tau taw qhia tias kev them hluav taws xob ntawm Thermocouple electrode thiab txav qhov txias txias ntawm thermocouple mus rau lub ntsuas lub davhlau ya nyob hauv chav tswj hwm. Nws tsis tuaj yeem tshem tawm cov cawv ntawm qhov kub ntawm qhov txias ntawm qhov txias txias rau ntawm ntsuas kub thiab tsis muaj kev them nyiaj. Yog li ntawd, lwm txoj kev kho kho yuav tsum tau siv los them rau qhov cuam tshuam rau qhov cuam tshuam ntawm txias txias t} {}}} {}} 0 degree rau ntawm ntsuas kub.
Thaum siv Thermocouple them nyiaj, nws yog ib qho tseem ceeb kom ntseeg tau tias cov qauv ntais ntawv thiab cov polarity tsis txuas nrog tsis raug. Qhov ntsuas kub ntawm kev sib txuas xaus ntawm cov xaim hluav taws xob thiab thermocouple yuav tsum tsis tshaj 100 degree. Tus qauv ntawm kev mob khaub thuas txias yuav tsum phim tus qauv ntawm thermocouple thiab siv nyob rau hauv cov ntsuas kub uas tau sau tseg; Thaum them cov nqi txias txias rau cov thermocouple, cov polarity yuav tsum tsis txhob txuas nrog tsis yog; Kho cov khoom pib ntawm qhov pib ntawm qhov ntsuas kub ntawm qhov ntsuas kub ntawm cov nyiaj tau los, yog li ntawd tus pointer qhia txog qhov kub thiab txias ntawm qhov sib npaug ntawm qhov sib npaug ntawm qhov sib npaug ntawm qhov chaw sib npaug; Cov ntaub ntawv seev nrog tsis siv neeg them hluav taws xob tsis muaj tus nqi nruab nrab; Cov nyiaj yuav tsum tau tshuaj xyuas thiab ntsuas.
Thermocouple cov cua sov muaj ntau cov kev siv hauv kev lag luam ntau lawm. Kev xaiv ntawm thermocouples yuav tsum tau ua ntej ntawm cov kev txwv siab tshaj plaws ntawm kev ntsuas kub, thiab qhov tseeb xaiv ntawm cov hluav taws xob thermocouple thiab tiv thaiv cov tes tsho yuav tsum tau ua; Xaiv cov kev qhia tshwj xeeb thiab qhov ntev ntawm thermocouple raws cov qauv thiab kev teeb tsa cov yam ntxwv ntawm cov khoom ntsuas. Thermocoples tuaj yeem faib rau hom kev lag luam zoo ib yam, hom phom, thiab hom tshwj xeeb raws li lawv cov qauv txheej txheem.