Rotameter ndi chipangizo chomwe chimatha kuyeza kuthamanga kwa madzi ndi mpweya.Kawirikawiri, rotameter ndi chubu chopangidwa ndi pulasitiki, galasi kapena zitsulo, kuphatikizapo zoyandama, zomwe zimayankha motsatira kutuluka kwa madzi mu chubu.
Chifukwa chogwiritsa ntchito ma equation okhudzana, ma rotameter a labotale a OMEGA™ amakhala osinthasintha.Ubwino wa ma rotameters ndi awa: kuyeza kwautali, kutsika kwapang'onopang'ono, kukhazikitsa kosavuta ndi kukonza, ndi sikelo yofananira.
Pazabwino zomwe tafotokozazi, rotameter ndiyomwe imagwiritsidwa ntchito kwambiri mosiyanasiyana.Amakhala ndi tapered chubu;madzimadzi akamadutsa mu chubu, amakweza choyandamacho.Kuthamanga kwakukulu kwa volumetric kudzaika mphamvu yowonjezereka pa choyandamacho, potero kukweza pamwamba.Mumadzimadzi, kuthamanga kwa madzi othamanga kumaphatikizidwa ndi kuwonjezereka kuti kuwonjezere kuyandama;kwa gasi, kutsekemera kumakhala kosawerengeka, ndipo kutalika kwa zoyandama kumayikidwa makamaka ndi liwiro la gasi ndi zotsatira zake.
Kawirikawiri, chitolirocho chimayikidwa molunjika.Kupanda kuyenda, choyandamacho chimayima pansi, koma madziwo akangotuluka kuchokera pansi pa chubu, choyandamacho chimayamba kuwuka.Momwemo, kutalika komwe kuyandama kumadutsako kumayenderana ndi liwiro lamadzimadzi komanso dera la annular pakati pa zoyandama ndi khoma la chitoliro.Pamene choyandamacho chikukwera, kukula kwa kutsegula kwa annular kumawonjezeka, zomwe zimachepetsa kusiyana kwa kuthamanga kudutsa pamtunda.
Pamene mphamvu yopita pamwamba yomwe imayendetsedwa ndi kutuluka kwamadzimadzi imayeza kulemera kwa kuyandama, dongosololo limafika pamtunda, kuyandama kumafika pamalo okhazikika, ndipo kuyandama kumayimitsidwa ndi kutuluka kwamadzimadzi.Ndiye mukhoza kuwerenga kachulukidwe ndi mamasukidwe akayendedwe a yeniyeni madzimadzi otaya mlingo.Zachidziwikire, kukula ndi kapangidwe ka rotameter zimatengera kugwiritsa ntchito.Ngati chirichonse chiwerengedwa ndi kukula bwino, mlingo wothamanga ukhoza kuwerengedwa mwachindunji kuchokera ku sikelo kutengera malo a zoyandama.Ma rotameters ena amakulolani kuti musinthe pamanja kuchuluka kwa kayendedwe kake pogwiritsa ntchito ma valve.M'mapangidwe oyambirira, zoyandama zaulere zimazungulira ndi kusintha kwa gasi ndi kuthamanga kwamadzimadzi.Chifukwa chakuti amazungulira, zipangizozi zimatchedwa rotameters.
Ma rotameter nthawi zambiri amapereka deta yowerengera komanso masikelo owerengera amadzi omwe wamba (mpweya ndi madzi).Kuzindikira kukula kwa rotameter yogwiritsidwa ntchito ndi madzi ena kumafuna kutembenuka kumodzi mwa mawonekedwe awa;pazamadzimadzi, madzi ofanana ndi gpm;kwa mpweya, kutuluka kwa mpweya kumakhala kofanana ndi mapazi a cubic pa mphindi (scfm).Opanga nthawi zambiri amapereka matebulo owerengera pamayendedwe oyenda awa ndikuwagwiritsa ntchito molumikizana ndi malamulo amasilayidi, ma nomograms, kapena mapulogalamu apakompyuta omwe amagwiritsidwa ntchito kudziwa kukula kwa rotameter.
Rotameter yoyambira ndi mtundu wowonetsa chubu lagalasi.Chubucho chimapangidwa ndi galasi la borosilicate, ndipo choyandamacho chikhoza kupangidwa ndi zitsulo (kawirikawiri zitsulo zosapanga dzimbiri zosapanga dzimbiri), galasi kapena pulasitiki.Mabuoys nthawi zambiri amakhala ndi m'mbali zakuthwa kapena zoyezera, zomwe zimaloza kuwerengera kwina pa sikelo.Ma Rotameters ali ndi zolumikizira kumapeto kapena zolumikizira malinga ndi ntchito.Mosasamala mtundu wa nyumba kapena zopangira ma terminal, chubu lagalasi lofanana ndi kuphatikiza zitsulo zosapanga dzimbiri zoyandama zitha kugwiritsidwa ntchito.Popeza msonkhano wa chubu woyandama umachita muyeso, iyi ndiye gawo lofunikira kwambiri pakuyimira.
Miyeso imatha kukhazikitsidwa kuti ipereke kuwerengera kwachindunji kwa mpweya kapena madzi-kapena imatha kuwonetsa sikelo yolinganizidwa, kapena kuyenda mumagulu a mpweya / madzi, kuti itembenuzidwe kukuyenda kwamadzi ofunikira kudzera patebulo loyang'ana.
Mlingo wa rotameter ungayerekezedwe ndi tebulo lolumikizana la mpweya monga nayitrogeni, mpweya, haidrojeni, helium, argon ndi mpweya woipa.Izi zidzatsimikizira kukhala zolondola, ngakhale kuti n'zovuta kuwerenga molunjika pa sikelo.Mulingowo umangopangidwira madzimadzi pa kutentha kwapadera komanso kupanikizika, monga mpweya kapena madzi.Mukamaliza kutembenuka, flowmeter yoyenera imatha kukupatsirani kuchuluka kwamadzimadzi osiyanasiyana pamikhalidwe yosiyanasiyana.Kugwiritsa ntchito zoyandama zingapo kumatha kuyeza kuchuluka kwamayendedwe osiyanasiyana nthawi imodzi.Nthawi zambiri, kukhazikitsa chubu chagalasi chozungulira pamtunda wa mzere wowonera kumatha kupangitsa kuwerenga mosavuta.
Mu mafakitale, chitetezo chishango gasi flowmeter ndi muyezo kuyeza madzi kapena mpweya kuyenda pansi pa zinthu zabwinobwino.Amatha kuyeza kuchuluka kwamayendedwe mpaka 60 GPM.Kutengera ndi mankhwala amadzimadzi oyezera, zipewa zapulasitiki kapena zitsulo zimatha kugwiritsidwa ntchito.
Pali zitsanzo za madzi omwe machubu agalasi sangagwiritsidwe ntchito.Madzi pamwamba pa 90 ° C (194 ° F), pH yake yapamwamba imafewetsa galasi;nthunzi yonyowa imakhala ndi zotsatira zofanana.Soda wa caustic amasungunula galasi;ndi galasi lokhazikika la hydrofluoric acid: Pakugwiritsa ntchito izi, mapaipi osiyanasiyana ayenera kufunidwa.
Machubu oyezera magalasi amakhala ndi mphamvu komanso kuchepa kwa kutentha, zomwe nthawi zambiri zimakhala zomwe zimachepetsa magwiridwe antchito a machubu agalasi rotameters.Machubu ang'onoang'ono a 6 mm (1/4 inchi) amatha kugwira ntchito movutikira mpaka 500 psig.Chitoliro chokulirapo cha 51 mm (2 inchi) chikhoza kugwira ntchito pamphamvu ya 100 psig.Magalasi a rotameter sakhalanso othandiza pa kutentha kozungulira 204 ° C (400 ° F), koma popeza kutentha ndi kupanikizika nthawi zambiri zimayenderana, izi zikutanthauza kuti ma rotameters angakhale osagwiritsidwa ntchito pa kutentha kochepa.Kutentha kwakukulu kudzachepetsa kuthamanga kwambiri kwa galasi la galasi.
Pankhani yoyezera mitsinje yambiri ya gasi kapena yamadzimadzi nthawi imodzi kapena kusakaniza pamodzi muzinthu zambiri, magalasi a chubu rotameters angagwiritsidwe ntchito;ndizoyeneranso ngati madzi amodzi amatuluka kudzera munjira zingapo zosiyanasiyana, pakadali pano, Mipikisano chubu otaya mamita amakulolani kukhazikitsa rotameters sikisi mu moyikamo chipangizo chimodzi.
Machubu achitsulo nthawi zambiri amapangidwa ndi aluminiyamu, mkuwa kapena chitsulo chosapanga dzimbiri ndipo amatha kugwiritsidwa ntchito pakutentha kwambiri komanso kupanikizika.Popeza siziwonekera, otsatira makina kapena maginito omwe ali kunja kwa chubu angagwiritsidwe ntchito kudziwa malo oyandama.Apa, kuphatikiza kasupe ndi pisitoni kumatsimikizira kuchuluka kwakuyenda.Sankhani zomangira ndi zida zina malinga ndi ntchito kuti mupewe dzimbiri kapena kuwonongeka.Kawirikawiri, angagwiritsidwe ntchito kuwononga machubu agalasi m'malo omwe nyundo yamadzi mwadzidzidzi ndi yofunika kwambiri, kapena pamene kutentha kwakukulu kapena kupanikizika (monga kuthamanga kwa nthunzi kapena kupanikizika) kungawononge galasi rotameter Madzi owononga.
Zitsanzo za madzi abwino achitsulo chubu rotameter monga amphamvu alkali, otentha alkali, fluorine, asidi hydrofluoric, madzi otentha, nthunzi, slurry, asidi mpweya, zina ndi chitsulo chosungunuka.Atha kugwira ntchito pazovuta mpaka 750 psig ndi kutentha mpaka 540 ° C (1,000 ° F), ndipo amatha kuyeza kuyenda kwamadzi mpaka 4,000 gpm kapena mpweya mpaka 1,300 scfm.
The zitsulo chubu rotameter angagwiritsidwe ntchito ngati otaya transmitter ndi analogi kapena digito ulamuliro.Amatha kuzindikira malo oyandama kudzera pa kulumikizana kwa maginito.Kenako, izi zimasuntha cholozera mu maginito ozungulira kuti chiwonetse malo oyandama kunja.Ma transmitters nthawi zambiri amagwiritsa ntchito ma microprocessors kuti apereke alamu ndi kugunda kwa mtima kuti ayeze ndi kufalitsa kutuluka kwamadzi.
Masensa olemera kwambiri / mafakitale amakhala ndi zokutira zotanuka ndipo amatha kugwira ntchito pansi pamakampani olemera.Nthawi zambiri gwiritsani ntchito transmitter yowonjezereka ya 4-20 mA: imakhala ndi kukana kwambiri phokoso lamagetsi, lomwe lingakhale vuto m'malo ogulitsa mafakitale.
Monga tanena kale, pali mwayi wambiri wosankha zida ndi mapangidwe a zoyandama, zodzaza, mphete za O ndi zomaliza.Machubu agalasi ndi omwe amapezeka kwambiri, koma machubu achitsulo amatha kugwiritsidwa ntchito pomwe galasi lidzasweka.
Kuphatikiza pa galasi, pulasitiki, zitsulo kapena zitsulo zosapanga dzimbiri, zoyandama zimathanso kupangidwa ndi chitsulo cha carbon, safiro ndi tantalum.Choyandamacho chimakhala ndi m'mphepete mwake pomwe kuwerenga kuyenera kuwonedwa ndi sikelo ya chubu.
Ma rotameter amatha kugwiritsidwa ntchito mu vacuum.Vavu yoyikidwa potulukira mita imatha kulola kuti izi zichitike.Ngati mayendedwe oyenda omwe akuyembekezeredwa ndi akulu, pawiri mpira wa rotor flowmeter angagwiritsidwe ntchito.Nthawi zambiri pamakhala mpira wakuda woyezera kuyenda pang'ono, ndi mpira waukulu woyera woyezera kuthamanga kwakukulu.Werengani mpira wakuda mpaka utadutsa sikelo, ndiyeno gwiritsani ntchito mpira woyera kuti muwerenge.Zitsanzo za miyeso ya miyeso imaphatikizapo mipira yakuda yokhala ndi liwiro la 235-2,350 ml / min, ndi mipira yoyera yokhala ndi kuchuluka kwa 5,000 ml / min.
Kugwiritsa ntchito ma chubu rotator apulasitiki amatha kulowa m'malo mwa madzi otentha, nthunzi ndi zakumwa zowononga pamtengo wotsika.Zitha kupangidwa ndi PFA, polysulfone kapena polyamide.Pofuna kupewa dzimbiri, mbali zonyowa zimatha kupangidwa ndi chitsulo chosapanga dzimbiri ndi FKM kapena Kalrez® O-rings, PVDF kapena PFA, PTFE, PCTFE.
Pazigawo za 4: 1, rotameter ya labotale imatha kuyesedwa kulondola kwa 0.50% AR.Kulondola kwa ma rotameter a mafakitale ndikoyipa pang'ono;kawirikawiri FS mu 10: 1 ndi 1-2%.Pakutsuka ndikulambalala ntchito, cholakwikacho ndi pafupifupi 5%.
Mutha kukhazikitsa pamanja kuchuluka kwa otaya, kusintha kutsegulira kwa ma valve, ndikuwona masikelo nthawi yomweyo kuti muwerenge kuchuluka kwamayendedwe;poyesa ndondomeko yeniyeni pansi pazikhalidwe zomwezo zogwirira ntchito, rotameter ikhoza kupereka miyeso yobwerezabwereza, ndipo zotsatira zake zimakhala mkati mwa 0,25% ya chiwerengero chenichenicho.
Ngakhale kukhuthala kumadalira kapangidwe kake, pamene kukhuthala kwa rotor kumasintha pang'ono, rotameter nthawi zambiri simasintha kwambiri: rotameter yaying'ono kwambiri yomwe imagwiritsa ntchito muyeso wozungulira ndiyomwe imakhala yovuta kwambiri, pamene rotameter yokulirapo siimveka.Ngati rotameter idutsa malire ake a viscosity, kuwerenga kwa viscosity kuyenera kukonzedwa;kawirikawiri, malire akukhuthala amatsimikiziridwa ndi zinthu ndi mawonekedwe a zoyandama, ndipo malire adzaperekedwa ndi wopanga rotameter.
Ma rotameter amatengera kuchuluka kwa madzimadzi.Ngati ndizosavuta kusintha, mutha kugwiritsa ntchito zoyandama ziwiri, imodzi imadalira voliyumu ndipo ina imagwiritsidwa ntchito kukonza kachulukidwe.Kawirikawiri, ngati kachulukidwe ka choyandamacho chikufanana ndi kachulukidwe kamadzimadzi, kusintha kwa kachulukidwe chifukwa cha kuphulika kumakhala kofunika kwambiri, zomwe zimapangitsa kuti pakhale kusintha kwakukulu pa malo oyandama.Misa flow rotameters ndi yoyenera kwambiri pamadzi otsika amakhuthala monga madzi a shuga, petulo, mafuta a jet ndi ma hydrocarbon owala.
Kusintha kwa chitoliro chakumtunda sikuyenera kukhudza kulondola kwakuyenda;osayika flowmeter pambuyo poti chigongono chalowetsedwa mu chitoliro.Ubwino wina ndi-chifukwa madzimadzi nthawi zonse amadutsa mu rotameter, ayenera kukhala oyera komanso opanda zinyalala;Komabe, madzi oyera amayenera kugwiritsidwa ntchito pachifukwa ichi, popanda kuthekera kwa tinthu tating'ono kapena kuphimba khoma la chitoliro, zomwe zingayambitse rotameter Imakhala yolakwika ndipo pamapeto pake imakhala yosagwiritsidwa ntchito.
Izi zapezedwa, kuwunikiridwa ndikusinthidwa kuchokera kuzinthu zoperekedwa ndi OMEGA Engineering Ltd.
OMEGA Engineering Ltd. (August 29, 2018).Chiyambi cha kuyeza kwa rotameter.AZoM.Kutengedwa kuchokera ku https://www.azom.com/article.aspx?ArticleID=15410 pa Disembala 6, 2020.
OMEGA Engineering Ltd. "Chiyambi cha Flow Rate of Rotameter".AZoM.Disembala 6, 2020. .
OMEGA Engineering Ltd. "Chiyambi cha Flow Rate of Rotameter".AZoM.https://www.azom.com/article.aspx?ArticleID=15410.(Idapezeka pa Disembala 6, 2020).
OMEGA Engineering Ltd., 2018. Chiyambi cha kuyeza kwa rotameter.AZoM, yowonedwa pa Disembala 6, 2020, https://www.azom.com/article.aspx?ArticleID = 15410.
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