Nguwuphi umahluko phakathi kwe-thermocouple kunye nokumelana ne-thermal?

Okwangoku, iubushushuisetyenziswe kwilizwe jikelele inemigaqo esemgangathweni. Imigaqo yelizwe jikelele ichaza ukuba ii-ubushushu zahlulwe zangamacandelo asibhozo ahlukeneyo, angala, B, R, S, K, N, E, J no T, kwaye iqondo lobushushu elilinganisiweyo liphantsi. Inokulinganisa uthabathe i-270 degrees celcius ukuya kuthi ga kwi-1800 degrees celcius. Phakathi kwazo, i-B, i-R, kunye ne-S zezoluhlu lweplatinam yee-ubushushu. Kuba iplatinam yintsimbi exabisekileyo, ikwabizwa ngokuba zii-ubushushu zentsimbi ezixabisekileyo kwaye ezishiyekileyo zibizwa ngokuba yiMetro ubushushu yexabiso eliphantsi.

Kukho iindidi ezimbini zeubushushu, uhlobo oluqhelekileyo kunye nohlobo lwe-armored.

Ii-ubushushu eziqhelekileyo zihlala zenziwe nge-thermode, ityhubhu yokwambathisa, umkhono okhuselayo kunye nebhokisi yesiphambuka, ngelixa i-ubushushu yokuxhobisa indibaniselwano yocingo lwe-ubushushu, izinto zokwambathisa kunye nomkhono wokhuseleko wentsimbi. Umdibaniso oqinileyo owenziwe ngokuzolula. Kodwa umqondiso wombane we-ubushushu ufuna ucingo olukhethekileyo ukuhambisa, olu hlobo lwentambo lubizwa ngokuba yimbuyekezo yocingo.
Ii-ubushushu ezahlukeneyo zifuna iingcingo ezahlukeneyo zokuhlawulela, kwaye umsebenzi wabo oyintloko kukudibanisa ne-ubushushu ukugcina isiphelo sereferensi ye-ubushushu kude nonikezelo lwamandla, ukwenzela ukuba ubushushu bokuphela kwesalathiso buzinzile.

Iingcingo zembuyekezo zohlulwe zibe ziindidi ezimbini: uhlobo lwembuyekezo kunye nohlobo lokwandiswa
Ukwenziwa kweekhemikhali kwintambo yolwandiso kuyafana neyo-ubushushu ehlawulwayo, kodwa ngokwenza oko, ucingo olwandisiweyo alwenziwe ngento efanayo ne-ubushushu. Ngokubanzi, ithathelwa indawo ngocingo olune-electron density efanayo njengeubushushu. Unxibelelwano phakathi kwentambo yembuyekezo kunye ne-ubushushu icacile gca. Ipali elungileyo ye-ubushushu idityaniswe kwintambo ebomvu yocingo lwembuyekezo, kwaye isibonda esibi siqhagamshelwe kumbala oshiyekileyo.

Uninzi lweengcingo zembuyekezo ngokubanzi zenziwe nge-alloy ye-nickel alloy.
I-Thermocouple sesona sixhobo sobushushu sisetyenziswa kakhulu kumlinganiselo wobushushu. Iimpawu zayo eziphambili luluhlu olubanzi lokulinganisa ubushushu, ukusebenza okuzinzileyo, isakhiwo esilula, impendulo eguquguqukayo elungileyo, kunye ne-conversion transmitter inokuhambisa i-4-20mA imiqondiso yangoku ukude. , Ilungele ulawulo oluzenzekelayo kunye nolawulo oluphakathi.

Umgaqo weubushushuumlinganiselo wobushushu usekelwe kwimpembelelo ye-thermoelectric. Ukudibanisa abaqhubi ababini abahlukeneyo okanye i-semiconductors kwi-loop evaliweyo, xa amaqondo okushisa kwiidibaniso ezimbini ahlukeneyo, amandla e-thermoelectric aya kuveliswa kwi-loop. Le nto ibizwa ngokuba yimpembelelo ye-thermoelectric, eyaziwa ngokuba yi-Seebeck effect. Umbane we-thermoelectric owenziwe kwi-loop evaliweyo iqulethwe ziindidi ezimbini zamandla ombane; Umahluko weqondo lobushushu obunokubakho bombane kunye nokubanakho ukuqhagamshelana nombane.

Nangona ukuxhathisa kwe-thermal kukwasetyenziswa ngokubanzi kwimizi-mveliso, ukusetyenziswa kwayo kuthintelwe ngenxa yomlinganiso wobushushu bayo. Umgaqo wokulinganisa ubushushu wokumelana ne-thermal usekwe kwixabiso lokumelana nomqhubi okanye i-semiconductor etshintsha ngobushushu. uphawu. Ikwanamalungelo amaninzi. Iyakwazi nokudlulisela imiqondiso yombane ukude. Inobuntununtunu obuphezulu, uzinzo olomeleleyo, ukutshintshiselana kunye nokuchaneka. Nangona kunjalo, ifuna ukubonelelwa ngombane kwaye ayinakulinganisa kwangoko utshintsho lobushushu.

Ubushushu obulinganiswe kukunganyangeki kobushushu obusetyenziswa kwimizi-mveliso buphantsi, kwaye umlinganiso wobushushu awufuni ntambo yembuyekezo, kwaye ixabiso lincinci.