Kwiindibano zocweyo zemveliso yeekhemikhali, umlinganiselo weegesi eziluhlaza umisela umgangatho wemveliso; Kwinkalo yokubeka iliso kwendalo, ukukhupha idatha yokuhamba kwegesi kuhambelana nokusebenza kolawulo lokusingqongileyo ... Kule meko,iimitha zokuhamba kobunzima begesi ye-thermalbaye baba "yimpahla eshushu" kwishishini ngenxa yokukwazi kwabo ukulinganisa ngokuchanekileyo ukuhamba kwegesi ngaphandle kwembuyekezo yobushushu kunye noxinzelelo. Kwaye inkqubo yesekethe emva kwayo "yingqondo ehlakaniphile" efezekisa lo msebenzi ubalaseleyo. Namhlanje, siza kukuthatha ukuba uyiphonononge!
I-flowmeter ye-thermal mass flowmeter iyilwe ngokusekwe kumgaqo wokusasazwa kwe-thermal, kwaye isebenzisa indlela yomahluko wobushushu obuqhubekayo ukulinganisa ngokuchanekileyo iigesi. Ineenzuzo zobukhulu obuncinci, inqanaba eliphezulu ledijithali, ukufakwa lula, kunye nomlinganiselo ochanekileyo.
Imodyuli engundoqo yesekethe:
Isijikelezo soluvo:
Ingxenye yesivamvo iqulathe imigangatho emibini yokujonga ubushushu beplatinam. Xa isixhobo sisebenza, inzwa enye ngokuqhubekayo ilinganisa ubushushu obuphakathi T1; esinye isivamvo siyazifudumeza ukuya kutsho kubushushu obungaphezulu kunobushushu obuphakathi T2 kwaye sisetyenziselwa ukubona isantya sokuqukuqela kolwelo, eyaziwa ngokuba sisiva isantya. Ubushushu Δ T=T2-T1, T2>T1. Xa ulwelo luhamba, iimolekyuli zegesi zingqubana nenzwa kwaye zisuse ubushushu be-T2, nto leyo ebangela ukuba ubushushu be-T2 bunciphe. Ukugcina i-Δ T ingatshintshi, umbane wangoku we-T2 kufuneka unyuswe. Isantya sokuhamba kwerhasi ngokukhawuleza, kokukhona kuthathwa ubushushu. Kukho ubudlelwane obusisigxina phakathi kweqondo lokuhamba kwegesi kunye nokushisa okwandisiweyo, oku kungumgaqo wokuhluka kweqondo lokushisa rhoqo.
Isekethe yolungiselelo lomqondiso:
Iimpawu eziphuma kwizinzwa zihlala ziqulathe ukungcola okunje ngokuphazamiseka kombane kunye nengxolo yokusingqongileyo. Umjikelo wokulungisa umqondiso ufana ne "signal master purification", okokuqala usebenzisa ibhulorho yeWheatstone ukukhulisa imiqondiso ebuthathaka yomahluko wobushushu ngamashumi okanye namakhulu amaxesha, ukwandisa amandla omqondiso; Emva koko, ngokusebenzisa i-low-pass filtering circuit, izibonakaliso zokuphazamiseka kwe-high-frequency interference zihluzwa njengesihluzo, zigcina kuphela iimpawu ezisebenzayo ezinxulumene nesantya sokuhamba kwegesi. Emva kokucocwa ngolu hlobo ngononophelo, umqondiso uba nyulu kwaye uzinzile, ubeka isiseko sokubala ngokuchanekileyo izinga lokuhamba kwegesi.
Ukusetyenzwa kwedatha kunye nesekethe yonxibelelwano:
Isignali enemeko ingena kwisekethe yokucubungula idatha kwaye iyalelwa yi-microprocessor ephezulu. I-microprocessor ngokukhawuleza kwaye ngokuchanekileyo iguqula umqondiso wokumahluko weqondo lokushisa kwixabiso lezinga lokuhamba kobunzima begesi ngokusekelwe kwi-algorithm esetwe kwangaphambili. Kwinqanaba lokuphuma, iiprotocol zonxibelelwano ezininzi zixhaswa, kwaye imiqondiso ye-analog ye-4-20mA ifanelekile kwiinkqubo zolawulo lwamashishini eziqhelekileyo. Unxibelelwano lwe-HART, i-alamu ye-relay, ukuhanjiswa kwe-Ethernet, i-4G ye-network network platform, i-Modbus RTU i-protocol yonxibelelwano yedijithali iququzelele ukutshintshiselana kwedatha kunye nezixhobo ezihlakaniphile kunye neekhomputha eziphezulu, ukuqonda ukujongwa okude kunye nokulawula okuzenzekelayo, kunye nokwenza ukuba idatha yokuhamba kwegesi "iqhube".
Ii-thermal gas mass flowmetereveliswe yi-Angji Instrument inenkqubo yesekethe, enobuchule obuphezulu bokuchaneka komlinganiselo we-± 0.2%, ilawula ukuguquguquka kokuhamba kwegesi phakathi koluhlu oluncinci kakhulu, iphucula kakhulu uzinzo lweenkqubo zokwenziwa kwetshiphu. Kwintsimi yokulinganisa igesi yendalo, ejongene noxinzelelo olunzima kunye nokutshintsha kweqondo lokushisa kwimibhobho, inkqubo yesiphaluka ye-thermal gas mass flowmeter inenzuzo yoluhlu olubanzi (ukuya kwi-100: 1). Nokuba kukubona ukuvuza kombhobho oqukuqelayo ophantsi okanye ukuqukuqela okuphakamileyo korhwebo, inokulinganisa ngokuchanekileyo kwaye incede amashishini afezekise ulawulo lwamandla olusebenzayo.
Ii-thermal gas mass flowmeterisekethe, kunye noyilo olugqwesileyo kunye nemisebenzi enamandla, ibonelela ngezisombululo ezithembekileyo zokulinganisa ukuhamba kwegesi kwimveliso yemveliso, ukubeka iliso kokusingqongileyo kunye nezinye iinkalo. I-Shanghai Angji Instrument Co., Ltd. inezijikelezo ezishushu, ezibandakanya iplagi-in edibeneyo, umbhobho, kunye nodonga oluqhekezayo olunyusiweyo, kwaye luxhasa ukulungelelanisa ngefowuni.
Ixesha lokuposa: Jun-05-2025