Thermocouple - kuyini? Thermocouple okwesikhathi kubhayela igesi

Thermocouple - kuyini? Okuningi isivele kucace kusuka isihloko. Idivayisi kuyinto transducer esetshenziselwa ekulinganiseni izinga lokushisa kwe- medium ukusebenza. Ikhipha ke yakhiwa ezimbili babashayeli ngezinto ezihlukahlukene ashiselwe noma soldered komunye nomunye kolunye. Idivayisi silula, kodwa izinga ukwenza kube nzima.

Kanjani thermocouple

Amabili umqhubi ezihluke exhumene enze isiyingi. Lapho izinga lokushisa amalunga omzimba ahlukene, ezingaba umehluko kwenzeka phakathi kwabo ngenxa umphumela thermoelectric.

thermocouple isimiso kanje. Lesi sangoma esiyinyama esilawulwa, okuhlangana ashisayo ibekwe, nemikhawulo yomhlaba khulula uxhumeke kwi- ithuluzi wokulinganisa. Kukhula umehluko phakathi izakhiwo babashayeli kanye umehluko ezishisayo yonkana emikhawulweni ngenhla amandla electromotive ngesimiso somshini (EMF ezishisayo).

Ubudlelwano obuphakathi voltage kanye lokushisa kuhluka ngezinto ezihlukahlukene. Labo noma ezinye izinhlobo izinzwa eyenzelwe amabanga ayo ezishisayo. Zingabonisa ukumelana ezahlukene ukugqwala futhi imvelo insimbi.

aphoyintimenti

Ngomsebenzi wokugqokwa elingenazinkinga Ukushisa imishini esetshenziswa thermocouple. Kuyini for a kubhayela igesi? Futhi asebenze kanjani? Kufanele kucatshangelwe ngaphezulu. Okokuqala, ngoba kunika umuntu ama-othomathikhi imishini livaleke-off phakathi wawuhamba of kubhayela igesi. I thermocouple egesi endzaweni lephephile futhi ezidingekayo ukudala kagesi ukuthungela igesi ngokushesha uma uqala ukondla. Ngaphezu kokwenza control nemisebenzi idivaysi ingasetshenziswa njengendlela inzwa lokushisa.

isithunzi

Cabanga ngalokho thermocouple has izici ezinhle:

• okusezingeni eliphezulu ngokunemba insimbi;

• ububanzi wokulinganisa ububanzi;

• kungenzeka ukulungisa lokushisa eliphezulu;

• isakhiwo esilula;

• ukutholakala, ongaphakeme izindleko futhi ihlala isikhathi eside thermoelectrodes;

• ukufakwa kanye nokugcinwa lula.

amaphutha

Ngo thermocouple kukhona downsides:

• ukuzwela aphansi kakhulu;

• Ukumelana omkhulu;

• nonlinearity kokwethembela lokushisa ezishisayo amandla electromotive;

• isidingo yokufakelwa nokugcina izinga lokushisa omunye kuphelile.

Thermo EMF electrode ngokuyisisekelo kuncike khona amanyela emkhandweni izinsimbi, ukuphathwa mechanical ezishisayo. Ukwandisa ukusebenzisa kwayo thermocouples amaningi thermopile.

Properties of Industrial kudivayisi thermocouple

Izinzwa Thermal zenziwa ikakhulukazi metal zasebukhosini. Kusukela imvelo sangaphandle tube ovaliwe flange, esebenza ukukhweza idivayisi. kufaneleka Avikelayo ivikela babashayeli ethonyeni ezindaweni ezinodlame futhi umthungo. Indaba esiku (600 ° C) noma insimbi engagqwali (kufika ku 1100 ° C) steel. Thermoelectrodes behlukene asbestos zobumba tube noma ubuhlalu sobumba.

Uma ukuphela itholakala eduze, izintambo thermocouple exhunywe kulo ngqo ngaphandle nezixhumi ezengeziwe. Lapho Positioning idivayisi yokulinganisa buqamama, lapho lithathwa uchungechunge semikhawulweni sesihle thermocouple afakwa ikhanda olubunjiwe, exhunywe tube zokuzivikela. Phakathi zethusi ezikhumulweni ahlelwe ku imbuyiselo zobumba esisuselwe yokuxhuma izintambo wenza izinto ezifanayo njengoba thermoelectrodes kodwa hhayi ukuba izici olunembile futhi lilawulwa. Sinenkosi eziphansi ukushuba okukhulu. Basuke busuka ikhanda ngokusebenzisa emikhonweni nge asbestos gasket. Ceramics ukhonza nokulinganisa izinga lokushisa wonke amalunga omzimba. Top ikhava zokuzivikela is threaded ngophawu hermetic.

On the wire crimp Ukunqanyulwa kwe ayikwazi ukufakwa, njengoba kungehlisa ukunemba ukufundwa. Wire wenza esiyingini ukunqanda ngaphansi screw.

Ukulungiswa lokushisa ushintsho kwi ezikhumulweni zingenziwa isisetjenziswa se-elektroniki, okwandisa ukunemba izilinganiso.

Yini kungaba thermocouple. Inani kanye Isici

A thermocouple kungenziwa ashiselwe iyiphi izintambo ezimbili izinsimbi nezingahlobene. Asetshenziswe ngomqondo ofanayo, embonini izinto okwazi withstanding okushisa aphakeme, isikhathi eside futhi nge high amandla Thermo-electromotive. Kukhona futhi namanye amadivayisi ahambisane ukunemba kwawo kanye efanayo yokusebenza isimiso, kodwa thermocouple lula futhi ama-apharathasi eshibhile.

I electrode esetshenzisiwe ezithambile annealed wire ka Alloys ekhethekile. Usebenza e-lokushisa esiphezulu degree angaba 1000. I Alloys banemikhaya ezinzile futhi okusezingeni eliphezulu Thermo-electromotive amandla amagugu.

Izinzwa nge electrode amabili, lapho cathode kuyinto ingxubevange nickel-chromium (Chromel) Okuvame kakhulu, kanye anode - omunye metal, ezifana alumel (thermocouple TCA). Uxhumano elula kwenziwa ngemfoloko.

Uhlobo ngalunye inzwa uhluke ukusebenza lokushisa ububanzi, inani EMF elakhiwe, ukumelana kuhlasela mechanical futhi amakhemikhali, ukuqina kanye interchangeability.

Kuyinto kudingekile kuphela ukuthenga amadivaysi ezinjalo, okuyinto zivumelana imingcele edingekayo. Lokhu kusebenza ikakhulukazi ukuze ukumelana ukushisa, noma ngokushesha kuyodingeka ukushintsha idivayisi.

Thermocouple ngoba Boiler ababulawa ngezindlela ezahlukene kuye ngokuthi model. ziyolekelela asezinsukwini cishe ezingeni elifanayo. Ngokwesilinganiso, kwakha ruble 500-600. Ngo ukuhweba kukhona izinzwa ephelele Converter ezengeziwe electronic, okuyinto eyenza ukufundwa insimbi yenkokhelo. Yena okuhlanganiswe ngqo ekhanda thermocouple. Intengo Inzwa lingaphezulu, kodwa ayidingi izintambo compensatory. K thermocouple ikhanda kungenziwa exhunywe ezivamile zethusi wire.

Ithanda ukuthatha imikhiqizo onobuhle ezithile, Ukucaciswa zazo khaxa. Universal kudivayisi ukuqina musa ihluke.

izinhlobo izinzwa

1. Thayipha K nickel-chromium (TXA thermocouple) noma nickel-alumel (HA) kokuba Izakhiwo ezilandelayo: eziphansi, ukuqina, ukunemba akuyona ezingaphezu kuka 0.4%, nesilinganiso basukela -270 kuya 1269 degrees. Njengoba iklanyelwe i-operation in an oxidizing futhi izikhathi eziphindwe inert.

2. L - chromel-kopel (TCA), thermocouple engabizi nge mkhawulo degrees 600.

3. J - yensimbi-constantan. Inzwa zibalwa yesibili ukuthandwa, uhla ivela -210 kuya 760 degrees, ngaphansi okuhlala, amelana namachibi.

4. E - a nickel-chromium noma nickel-constantan ngokunemba ephakeme kanye isignali value, mkhawulo we nesilinganiso ingeqi degrees 870.

5. Izinzwa eyenziwe izinsimbi eziyigugu usebenza ezingeni lokushisa eliphakeme, kodwa abe eziphezulu, ngakhoke ngokuvamile kakhulu esetshenziswa umkhakha.

Embodiments thermocouple uxhumano

Ngu yokulinganisa izindlela izinzwa ezivamile lusekelwe. Bona imikhawulo wire basuke eziphothene ukuze zibe yisikhungo esisodwa, lokho kwaholela ekutheni enze uphenyo ekhethekile. I-sleeve nabo igobolondo ovikelayo yangaphandle, lapho ukushisa idluliswe ngokushesha, futhi thermocouple kuyinto inertia ongaphakeme. Ukunemba ukufundwa ngayo inesandla impambaniso yegetsi. Ngokwalesi simiso usebenza thermocouple okwesikhathi kubhayela igesi. Idivayisi yokulinganisa ngakho akufanele lusekelwe njengoba ngokusebenzisa phansi angase abe izifunda ezengeziwe, okuyinto ukwethula iphutha ukufundwa.

Uma kwalapho akuyona yini ethinte igobolondo ovikelayo ke lokhu design ibizwa ngokuthi isisekelo. Naphezu kweqiniso lokuthi kule ndaba inzwa isivinini incipha, kunethemba elincane singangena ukuphambuka impambaniso yegetsi.

Umsebenzi okuhlangana kungabuye ngqo ayifake inqubo, kodwa le ndlela kunciphisa ukuphila inkonzo zedivayisi ngenxa ukugqwala. Esikhathini ukukhiqizwa thermocouple enjalo isetshenziswa akuvamile, futhi zasendlini kungabonwa yonke indawo.

Ukuze ekulinganiseni izinga lokushisa amaphuzu amaningana isicelo multizone thermocouple. uxhumano isikimu isendlini isimiso esifanayo, kuphela idivayisi exhunywe kwi-izinzwa eziningana akhiwe ezindaweni ezimbili noma ngaphezulu.

Kanjani a thermocouple nge kubhayela igesi

Thermocouple - kuyini? Ukuze umsebenzisi, konke kuba sobala, lapho kukhona izenzo eziphazamisa imishini igesi. Umsebenzi thermocouple okuhlangana e kubhayela ukufuthelana ngu ilangabi umshayeli. Isifunda unxenxwa EMF ezishisayo elilingana 20-25 mV, okuyinto ukubaluleka yanele ukuba usebenze valve Solenoid. Lokhu kuvula supply igesi Ukushisa kubhayela. Ignition sikaphalafini njalo isebenza ngenkathi kubhayela usebenza. Kusukela sikaphalafini zako ezisemqoka ephakamayo, amanzi bafudumale. I thermocouple egesi endzaweni lephephile futhi yokondla kagesi ukuthungela ezivuthayo.

Ngaphezu kwalokho, ezinye ipuleti enikezwe ukuvikelwa uma ukwehluleka supply lapho igesi kulahleka inethiwekhi, bese enikeziwe futhi.

Ngo omlilo igesi ilangabi e kubhayela isikhala ukuvuvukala thermoelectrodes kuba evuthayo, futhi ngaleyo ndlela ukulethwa nophethiloli. Ngemva ilangabi luqede, le thermocouple okuhlangana ashisayo epholisa futhi iyeke ukuphakela zamanje. Uma lokhu sivaliwe valve Solenoid, igesi ivale off.

Hlola ukuseviswa

Thermocouple okwesikhathi kubhayela igesi uhlolwa valve Solenoid, okuyinto okuthengiswa okukhethekile ezitolo. Ngu isiphelo sesimiso valve emazombezombe kufanele soldered izintambo ezimbili nezimo abanezinto zokugawula ezibukhali "ingwenya", bese uxhuma terminals we thermocouple. Lapho ukufuthelana, kwalapho esishisayo thermocouple yayinjalo elangabini le-gas sikaphalafini noma suppositories umphini okufanele asebenze kusukela wamanje elakhiwe. Idivayisi kutfokomele kakhulu nesingakhangi.

Ihlola nekusebenta thermocouple nakho kusetshenziswa millivoltmeter. Voltage emikhawulweni yaso khulula, kufanele kube ngaphansi kuka-25 mV.

Esinye isizathu sokuba ukuvala shaqa iyona thermocouple iphutha umshayeli. kahle kungase kubangelwe izinkinga kumiswa amayunithi angaphandle esikhundleni spikes. okuqoqiwe lokukhuhla "nulevkoy" yakhe. Badinga kuphela ukususa uqweqwe. Kungenjalo-ke uyobhujiswa spikes.

At ikhefu we izintambo thermocouple zixhunywe ucezu lemfishane zethusi wire ezivamile. Kubalulekile ukubeka othintana nabo ku lokushisa elifanayo.

Uma thermocouple wokushiswa kubhayela, ke kufanele kuthathelwe indawo. Kungenzeka ukuxuba emikhawulweni izintambo ngo ezimazombe ndawonye bese uxhuma terminals sebhetri. Ngakho kubalulekile ukukhetha isikhathi esifanele ukuxhuma, ukuthola spike izinga. Ngaphezu kwalokho, kubalulekile ukuba senze kanjalo ku izintambo thermocouple kungukuthi hit nge metal esibulalayo ibhethri. Indawo ezimazombe inqubo Welding ngokuvamile egxilile powder graphite. Uma ukuqoqa kudivayisi Latro, ungalungisa samanje, futhi joint intando izinga. Zonke lezi zinyathelo zingezesikhashana, ngesikhathi igesi thermocouple elula kufanele kuthathelwe indawo entsha.

isiphetho

Thermocouple - kuyini? Kuyinto Converter elula thermoelectric. Ukuthembeka ukuqina idivayisi ukwenza kube buyindlela esisemqoka a kubhayela igesi off uma eziphuthumayo.

Thermocouples nazo ezisetshenziselwa ukuthungela kagesi e igesi izitofu nama njengoba lokushisa izinzwa.