Ulwahlulo lwezixhobo zokuhamba lunokwahlulwa lube: i-volumetric flowmeter, i-velocity flowmeter, i-flowmeter target, i-electromagnetic flowmeter, i-vortex flowmeter, i-rotameter, i-flowmeter yoxinzelelo oluhlukeneyo, i-flowmeter ye-ultrasonic, i-Mas flow meter, njl.
1. I-Rotameter
I-flowmeter ye-Float, ekwabizwa ngokuba yi-rotameter, luhlobo lwe-flowmeter yendawo eguquguqukayo.Kwityhubhu ye-cone ethe nkqo eyandisa ukusuka ezantsi ukuya phezulu, ubunzima be-float yecandelo lomnqamlezo ojikelezayo luthwalwa ngamandla e-hydrodynamic, kwaye i-float ingaba kwi-cone inokunyuka kwaye iwe ngokukhululekileyo.Ihamba inyuka kwaye ihla phantsi kwesenzo sokuhamba kwesantya kunye ne-buoyancy, kwaye emva kokulinganisa ubunzima be-float, idluliselwe kwi-dial ukubonisa isantya sokuhamba nge-coupling magnetic.Ngokuqhelekileyo yahlulahlulwe kwiglasi kunye neerotamitha zetsimbi.I-Metal rotor flowmeters zezona zisetyenziswa kakhulu kwishishini.Kwimithombo yeendaba ebolileyo kunye needamitha ezincinci zepayipi, iglasi idla ngokusetyenziswa.Ngenxa yobuthathaka beglasi, indawo yokulawula ephambili ikwayi-rotor flowmeter eyenziwe ngeentsimbi ezixabisekileyo ezifana ne-titanium..Baninzi abavelisi be-rotor flowmeter basekhaya, ngakumbi iChengde Kroni (esebenzisa itekhnoloji yaseGerman Cologne), iKaifeng Instrument Factory, iChongqing Chuanyi, kunye neChangzhou Chengfeng zonke zivelisa iirotamitha.Ngenxa yokuchaneka okuphezulu kunye nokuphindaphinda kwee-rotameters, Isetyenziswa ngokubanzi ekuboneni ukuhamba kweemitha zepayipi ezincinci (≤ 200MM).
2. imitha yokuqukuqela entle
I-flowmeter efanelekileyo yokufuduka ilinganisa umthamo wokuhamba kwamanzi ngokulinganisa umthamo wokulinganisa owenziwe phakathi kwendlu kunye ne-rotor.Ngokwesakhiwo se-rotor, iimitha ezihamba kakuhle zokufuduka zibandakanya uhlobo lwevili esinqeni, uhlobo lwe-scraper, uhlobo lwegiya ye-elliptical njalo njalo.Iimitha zokuhamba ezihamba kakuhle zibonakaliswe ngokuchaneka komlinganiselo ophezulu, ezinye zifikelela kwi-0.2%;isakhiwo esilula nesithembekileyo;ukusetyenziswa okubanzi;ukushisa okuphezulu kunye nokumelana noxinzelelo oluphezulu;iimeko zokufakela eziphantsi.Isetyenziswa ngokubanzi kumlinganiselo weoli ekrwada kunye nezinye iimveliso zeoyile.Nangona kunjalo, ngenxa yokuqhubela igiya, ubuninzi bombhobho yeyona ngozi enkulu efihliweyo.Kuyimfuneko ukufaka isihluzo phambi kwesixhobo, esinobomi obulinganiselweyo kwaye sihlala sifuna ukugcinwa.Iiyunithi eziphambili zemveliso yasekhaya zezi: I-Kaifeng Instrument Factory, i-Anhui Instrument Factory, njl.
3. Imitha yoxinzelelo oluhlukeneyo
I-flowmeter yoxinzelelo oluhlukeneyo sisixhobo sokulinganisa esinembali ende yokusetyenziswa kunye nedatha epheleleyo yovavanyo.Yimitha yokuhamba elinganisa umahluko woxinzelelo lwe-static owenziwe ngulwelo oluqukuqelayo kwisixhobo sokutshiza ukubonisa isantya sokuhamba.Olona lungelelwaniso lusisiseko luqulunqwe sisixhobo sokuthomalalisa, umbhobho wophawu loxinzelelo olwahlukileyo kunye negeyiji yoxinzelelo olwahlukileyo.Esona sixhobo sixhaphakileyo esisetyenziswa ngokuqhelekileyo kushishino “sesona sixhobo sibambekayo sisemgangathweni” esiye samiselwa.Ngokomzekelo, i-orifice eqhelekileyo, i-nozzle, i-venturi nozzle, i-venturi tube.Ngoku isixhobo esichukumisayo, ngakumbi ukulinganisa ukuhamba kwe-nozzle, sihambela ekudityanisweni, kwaye i-high-precision differential pressure transmitter kunye nembuyekezo yeqondo lokushisa idibaniswe ne-nozzle, ephucula kakhulu ukuchaneka.Itekhnoloji yetyhubhu yePitot ingasetyenziselwa ukulinganisa isixhobo sokutshiza kwi-intanethi.Kule mihla, ezinye izixhobo ezingezizo ezisemgangathweni zikwasetyenziswa kumlinganiselo wemizi-mveliso, njengeepleyiti ze-orifice eziphindwe kabini, iipleyiti ezijikelezileyo, iipleyiti ze-annular orifice, njl.Ulwakhiwo lwesixhobo sokuthomalalisa esiqhelekileyo silula, kodwa ngenxa yeemfuno zalo eziphakamileyo zonyamezelo lwe-dimensional, imilo kunye nokunyamezelana kwesikhundla, iteknoloji yokucubungula inzima.Ukuthatha ipleyiti ye-orifice esemgangathweni njengomzekelo, iyingxenye ye-ultra-thin-plate-like part, ejongene ne-deformation ngexesha lokucubungula, kunye neepleyiti ezinkulu ze-orifice nazo zixhomekeke kwi-deformation ngexesha lokusetyenziswa, elichaphazela ukuchaneka.Umngxuma woxinzelelo lwesixhobo sokuphola awukho mkhulu kakhulu, kwaye uya konakala ngexesha lokusetyenziswa, okuya kuchaphazela ukuchaneka komlinganiselo.Ipleyiti ye-orifice eqhelekileyo iya kuguga izakhi ezihambelana nomlinganiselo (ezifana nee-angles ezibukhali) ngenxa yokukhuhlana kolwelo oluchasene nayo ngexesha lokusetyenziswa, okuya kunciphisa ukuchaneka komlinganiselo.
Nangona uphuhliso lweemitha zokuhamba koxinzelelo olwahlukileyo lusengaphambili, kunye nokuphuculwa okuqhubekayo kunye nophuhliso lwezinye iindlela zokuhamba kweemitha, kunye nokuphuculwa okuqhubekayo kweemfuno zokulinganisa ukuhamba kuphuhliso lwemizi-mveliso, indawo yokwahlukana kweemitha zokuhamba koxinzelelo kumlinganiselo wemizi-mveliso iye yaba yinxalenye. Ithatyathelwa indawo yimitha yokuqukuqela ephucukileyo, echanekileyo kunye nefanelekileyo.
4. I-flowmeter yombane
I-electromagnetic flowmeter iphuhliswa ngokusekwe kumgaqo weFaraday electromagnetic induction ukulinganisa ukuhamba komthamo wolwelo oluqhubayo.Ngokomthetho kaFaraday wokungeniswa kwe-electromagnetic, xa umqhubi enqumla umgca wemagnethi kwintsimi yamagnetic, i-voltage induced yenziwa kwi-conductor.Ubukhulu bamandla e-electromotive buhambelana nomqhubi.Kwintsimi yamagnetic, isantya sokuhamba kwe-perpendicular kwintsimi yamagnetic silinganisa, kwaye emva koko ngokuhambelana nobubanzi bombhobho kunye nokwahlukana kwendawo ephakathi, iguqulwa ibe yinqanaba lokuhamba.
I-electromagnetic flowmeter kunye nemigaqo yokhetho: 1) Ulwelo oluza kulinganiswa kufuneka lube lulwelo oluqhubayo okanye lube ludaka;2) I-caliber kunye noluhlu, ngokukhethekileyo uluhlu oluqhelekileyo lungaphezulu kwesiqingatha soluhlu olupheleleyo, kwaye izinga lokuhamba liphakathi kweemitha ezi-2-4;3).Uxinzelelo lokusebenza kufuneka lube ngaphantsi koxinzelelo loxinzelelo lwe-flowmeter;4).Izixhobo ezahlukeneyo zombane kunye nezixhobo ze-electrode kufuneka zisetyenziswe kumaqondo okushisa ahlukeneyo kunye neendaba ezitshabalalisayo.
Ukuchaneka kokulinganisa kwe-electromagnetic flowmeter kusekelwe kwimeko apho ulwelo lugcwele umbhobho, kwaye ingxaki yokulinganisa umoya kumbhobho ayikasombululwa kakuhle.
Izinto eziluncedo ze-electromagnetic flowmeters: Akukho ndawo ibethayo, ke ilahleko yoxinzelelo incinci, kwaye nokusetyenziswa kwamandla kuyancipha.Inxulumene kuphela nesantya esiphakathi solwelo olulinganisiweyo, kwaye uluhlu lokulinganisa lubanzi;enye imidiya inokulinganiswa kuphela emva kokulungelelaniswa kwamanzi, ngaphandle kokulungiswa, eyona ifaneleka kakhulu ukusetyenziswa njengesixhobo sokulinganisa ukulinganisa ukuhlaliswa.Ngenxa yokuphuculwa okuqhubekayo kwethekhnoloji kunye nezixhobo zenkqubo, ukuphuculwa okuqhubekayo kozinzo, ukulandelelana, ukuchaneka kunye nobomi, kunye nokwandiswa okuqhubekayo kweedamitha zemibhobho, ukulinganiswa kwemithombo yeendaba eziqinileyo ezinolwelo ezibini zisebenzisa i-electrodes ethathe indawo kunye kunye ne-electrodes ye-scraper ukusombulula i ingxaki.Uxinzelelo oluphezulu (i-32MPA), ukuxhathisa kwe-corrosion (i-anti-acid kunye ne-alkali lining) iingxaki zokulinganisa okuphakathi, kunye nokwandiswa okuqhubekayo kwe-caliber (ukuya kwi-3200MM caliber), ukunyuka okuqhubekayo kobomi (ngokubanzi kungaphezu kweminyaka eyi-10), i-electromagnetic i-flowmeters ifumana ngakumbi nangakumbi Ukusetyenziswa ngokubanzi, iindleko zayo nazo zincitshisiwe, kodwa ixabiso lilonke, ngakumbi ixabiso leemitha zombhobho omkhulu, lisephezulu, ngoko linendawo ebalulekileyo ekuthengeni iimitha zokuhamba.
5. Ultrasonic flowmeter
I-ultrasonic flowmeter luhlobo olutsha lwesixhobo sokulinganisa ukuhamba okuphuhliswe kwixesha langoku.Ngethuba nje ulwelo olunokudlulisa isandi lunokulinganiswa nge-flowmeter ye-ultrasonic;I-flowmeter ye-ultrasonic inokulinganisa ukuhamba kwe-high-viscosity liquid, i-non-conductive liquid okanye igesi, kunye nokulinganisa kwayo Umgaqo wesantya sokuhamba kukuba: isantya sokusasazwa kwamaza e-ultrasonic kwi-fluid iya kuhluka kunye nesantya sokuhamba kwamanzi alinganiswayo.Okwangoku, i-high-precision ultrasonic flowmeters isehlabathi leemveliso zangaphandle, njenge-Fuji yaseJapan, i-United States' Kanglechuang;abavelisi basekhaya bee-flowmeters ze-ultrasonic ikakhulu ziquka: i-Tangshan Meilun, i-Dalian Xianchao, i-Wuhan Tailong njalo njalo.
Ii-flowmeters ze-Ultrasonic ngokuqhelekileyo azisetyenziswanga njengezixhobo zokulinganisa i-settlement, kwaye imveliso ayikwazi ukumisa ukutshintshwa xa indawo yokulinganisa i-on-site yonakaliswe, kwaye isetyenziswa rhoqo kwiimeko apho iiparitha zokuvavanya zifunwa ukukhokela ukuveliswa.Inzuzo enkulu yee-flowmeters ze-ultrasonic kukuba zisetyenziselwa ukulinganisa ukuhamba kwe-caliber enkulu (ububanzi bombhobho omkhulu kuneemitha ezi-2).Nangona ezinye iindawo zokulinganisa zisetyenziselwa ukulungiswa, ukusetyenziswa kwe-high-precision ultrasonic flowmeters kunokugcina iindleko kunye nokunciphisa ukulungiswa.
6. Imitha yomthamo omkhulu
Emva kweminyaka yophando, i-U-shaped tube mass flowmeter yaqalwa yinkampani yaseMelika ye-MICRO-MOTION ngo-1977. Emva kokuba le flowmeter yaphuma, yabonisa amandla ayo anamandla.Inzuzo yayo kukuba isibonakaliso sokuhamba kobuninzi sinokufunyanwa ngokuthe ngqo, kwaye asichatshazelwa yimpembelelo yeParameter yomzimba, ukuchaneka ± 0.4% yexabiso elilinganisiweyo, kwaye abanye banokufikelela kwi-0.2%.Inokulinganisa iindidi ezininzi zeegesi, ulwelo kunye nodaka.Ilungele ngokukodwa ukulinganisa igesi yepetroleum engamanzi kunye nerhasi yendalo enyibilikisiweyo enemithombo yeendaba yokuthengisa esemgangathweni, yongezwa I-flowmeter ye-electromagnetic ayonelanga;ngenxa yokuba ayichatshazelwa kukuhanjiswa kwesantya sokuhamba kwicala elinyukayo, akukho mfuneko yamacandelo emibhobho ethe ngqo kumacala angaphambili nangasemva kwi-flowmeter.Ukungalungi kukuba i-mass flowmeter inokuchaneka okuphezulu kwaye ngokuqhelekileyo inesiseko esinzima, ngoko kuyabiza;kuba ichaphazeleka ngokulula kukungcangcazela kwangaphandle kwaye ukuchaneka kuncitshisiwe, nikela ingqalelo ekukhetheni indawo yayo yokufaka kunye nendlela.
7. I-Vortex flowmeter
I-vortex flowmeter, eyaziwa ngokuba yi-vortex flowmeter, yimveliso eyaphuma kuphela ekupheleni kwe-1970s.Sele idumile ukusukela oko yafakwa kwintengiso kwaye isetyenziswa ngokubanzi ukulinganisa ulwelo, igesi, umphunga kunye nezinye imidiya.I-vortex flowmeter yi-flowmeter yesantya.Umqondiso wokuphuma ngumqondiso we-pulse frequency okanye i-standard yangoku yesignali ngokuhambelana nesantya sokuhamba, kwaye ayichaphazeli ubushushu be-fluid, ukubunjwa koxinzelelo, i-viscosity kunye nobuninzi.Ulwakhiwo lulula, akukho malungu ashukumayo, kwaye into yokufumanisa ayichukumisi ulwelo oluza kulinganiswa.Ineempawu zokuchaneka okuphezulu kunye nobomi benkonzo ende.Ukungalungi kukuba icandelo elithile lombhobho elithe tye liyafuneka ngexesha lofakelo, kwaye uhlobo oluqhelekileyo alunaso isisombululo esihle sokungcangcazela kunye nokushisa okuphezulu.Isitalato se-vortex sineentlobo ze-piezoelectric kunye ne-capacitive.Le yokugqibela ineengenelo ekuxhathiseni ubushushu kunye nokumelana nokungcangcazela, kodwa kubiza kakhulu kwaye isetyenziswa ngokubanzi ukulinganisa umphunga oshushu kakhulu.
8. Imitha yokuhamba ekujoliswe kuyo
Umgaqo wokulinganisa: Xa i-medium ihamba kwi-tube yokulinganisa, umehluko woxinzelelo phakathi kwamandla e-kinetic kunye nepleyiti ekujoliswe kuyo kuya kubangela ukufuduka okuncinci kwepleyiti ekujoliswe kuyo, kwaye amandla abangelwayo alingana nesantya sokuhamba.Inokulinganisa i-ultra-small flow, i-ultra-low flow rate (0 -0.08M / S), kwaye ukuchaneka kunokufikelela kwi-0.2%.
Ixesha lokuposa: Apr-07-2021