Indlela Izinzwa ze-Thermocouple Zisebenza Ngayo
Lapho kukhona ama-conductor amabili ahlukene kanye nama-semiconductors A no-B ukuze akhe iluphu, futhi iziphetho ezimbili zixhunywe komunye nomunye, inqobo nje uma amazinga okushisa ezinhlangothini zombili ehlukile, izinga lokushisa kwelinye icala ngu-T, elibizwa ngokuthi ukuphela kokusebenza noma ukuphela okushisayo, kanye nezinga lokushisa lenye i-TO , elibizwa ngokuthi ukuphela kwamahhala noma ukuphela okubandayo, kukhona i-current ku-loop, okungukuthi, amandla e-electromotive akhona ku-loop abizwa ngokuthi i-thermoelectromotive force.Lesi simo sokukhiqiza amandla e-electromotive ngenxa yomehluko wamazinga okushisa sibizwa ngokuthi umphumela we-Seebeck.Kunemiphumela emibili ehlobene ne-Seebeck: okokuqala, lapho i-current igeleza ngokuhlangana kwama-conductor amabili ahlukene, ukushisa kudonswa noma kukhishwe lapha (kuye ngokuthi isiqondiso samanje), okubizwa ngokuthi umphumela we-Peltier;Okwesibili, lapho i-current igeleza ku-conductor ene-gradient yezinga lokushisa, ikhondukta ibamba noma ikhulule ukushisa (kuye ngokuthi isiqondiso samanje esihlobene ne-gradient yezinga lokushisa), eyaziwa ngokuthi umphumela we-Thomson.Inhlanganisela yama-conductor amabili ahlukene noma ama-semiconductors ibizwa ngokuthi i-thermocouple.
Indlela Izinzwa Eziphikisayo Ezisebenza Ngayo
Inani lokumelana le-conductor lishintsha nezinga lokushisa, futhi izinga lokushisa lento okufanele lilinganiswe libalwa ngokulinganisa inani lokumelana.Inzwa eyakhiwe yilo mgomo inzwa yokushisa yokumelana, esetshenziselwa ikakhulukazi izinga lokushisa ebangeni lokushisa -200-500 °C.Isilinganiso.Insimbi ehlanzekile iyinto eyinhloko yokukhiqiza yokumelana nokushisa, futhi izinto zokumelana nokushisa kufanele zibe nalezi zimpawu ezilandelayo:
(1) I-coefficient yokumelana nezinga lokushisa kufanele ibe nkulu futhi izinze, futhi kufanele kube nobudlelwano obuhle bomugqa phakathi kwevelu yokumelana nezinga lokushisa.
(2) Ukumelana okuphezulu, umthamo wokushisa omncane kanye nesivinini sokuphendula esisheshayo.
(3) Impahla inokuphinda ikhiqizeke futhi isebenze kahle, futhi intengo iphansi.
(4) Amakhemikhali kanye nezinto ezibonakalayo zizinzile ngaphakathi kwebanga lokulinganisa izinga lokushisa.
Njengamanje, i-platinum nethusi yizona ezisetshenziswa kakhulu embonini, futhi zenziwe zaba izinga lokushisa elijwayelekile lokulinganisa ukumelana nokushisa.
Ukucatshangelwa lapho ukhetha inzwa yezinga lokushisa
1. Ukuthi izimo zemvelo zento elinganisiwe zinomonakalo yini entweni yokulinganisa izinga lokushisa.
2. Ukuthi izinga lokushisa kwento elinganisiwe lidinga ukurekhodwa, lithuswe futhi lilawulwe ngokuzenzakalelayo, nokuthi lidinga ukukalwa futhi lidluliselwe kude.3800 100
3. Esimeni lapho izinga lokushisa lento elinganisiwe lishintsha ngokuhamba kwesikhathi, noma ngabe i-lag yesici sokulinganisa izinga lokushisa ingahlangabezana nezidingo zokulinganisa izinga lokushisa.
4. Usayizi nokunemba kwebanga lokulinganisa izinga lokushisa.
5. Ukuthi usayizi wesici sokulinganisa izinga lokushisa ufanelekile yini.
6. Intengo iqinisekisiwe nokuthi ikulungele yini ukuyisebenzisa.
Ungawagwema kanjani amaphutha
Uma ufaka futhi usebenzisa inzwa yezinga lokushisa, amaphutha alandelayo kufanele agwenywe ukuze kuqinisekiswe umphumela wokulinganisa ongcono kakhulu.
1. Amaphutha abangwe ukufakwa okungafanele
Isibonelo, indawo yokufaka nokujula kokufakwa kwe-thermocouple ayikwazi ukubonisa izinga lokushisa langempela lesithando somlilo.Ngamanye amazwi, i-thermocouple akufanele ifakwe eduze kakhulu nomnyango nokufudumeza, futhi ukujula kokufaka kufanele okungenani kube izikhathi ezingu-8 kuya kwezingu-10 ububanzi beshubhu lokuvikela.
2. Iphutha lokumelana nokushisa
Lapho izinga lokushisa liphezulu, uma kukhona ungqimba lomlotha wamalahle ku-tube yokuzivikela futhi uthuli lufakwe kulo, ukumelana nokushisa kuzokwanda futhi kuvimbele ukuqhutshwa kokushisa.Ngalesi sikhathi, inani lenkomba yezinga lokushisa liphansi kunevelu yangempela yezinga lokushisa elilinganisiwe.Ngakho-ke, ingaphandle leshubhu lokuvikela i-thermocouple kufanele ligcinwe lihlanzekile ukuze kuncishiswe amaphutha.
3. Amaphutha adalwa ukungafakwa kahle kwe-insulation
Uma i-thermocouple ifakwe i-insulated, ukungcola okuningi noma i-slag kasawoti ku-tube yokuvikela kanye nebhodi lokudweba ucingo kuzoholela ekwakhiweni okungalungile phakathi kwe-thermocouple nodonga lwesithando somlilo, okuyingozi kakhulu ekushiseni okuphezulu, okungeke kubangele ukulahlekelwa amandla kagesi we-thermoelectric kodwa futhi wethula ukuphazamiseka.Iphutha elidalwe yilokhu kwesinye isikhathi lingafinyelela e-Baidu.
4. Amaphutha ethulwa yi-thermal inertia
Lo mphumela ugqama kakhulu lapho kwenziwa izilinganiso ezisheshayo ngoba inertia eshisayo ye-thermocouple ibangela inani elibonisiwe lemitha ukuthi lisale ngemuva koshintsho kuzinga lokushisa elilinganiswayo.Ngakho-ke, i-thermocouple ene-electrode eshisayo encane kanye nobubanzi obuncane beshubhu yokuvikela kufanele isetshenziswe ngangokunokwenzeka.Uma indawo yokulinganisa izinga lokushisa ivuma, ishubhu elivikelayo lingasuswa ngisho.Ngenxa yokusaleleka kokulinganisa, i-amplitude yokuguquguquka kwezinga lokushisa okutholwe i-thermocouple incane kunaleyo yokuguquguquka kwezinga lokushisa lesithando somlilo.Ubukhulu besilinganiso sokulinganisa, buncane i-amplitude yokuguquguquka kwe-thermocouple kanye nomehluko omkhulu kusukela ezingeni lokushisa langempela lesithando somlilo.
Isikhathi sokuthumela: Nov-24-2022