I-Rotameter iyithuluzi elikwazi ukukala ukugeleza koketshezi negesi.Ngokuvamile, i-rotameter iyishubhu elenziwe ngepulasitiki, ingilazi noma insimbi, ehlanganiswe ne-float, ephendula ngokuqondile ekugelezeni koketshezi epayipini.
Ngenxa yokusetshenziswa kwezibalo ezihlobene, ama-rotameter aselabhorethri e-OMEGA™ anemisebenzi eminingi.Izinzuzo zama-rotameters zifaka: ibanga elide lokulinganisa, ukwehla kwengcindezi ephansi, ukufakwa kalula nokugcinwa, kanye nesikali somugqa.
Ngezinzuzo ezingenhla, i-rotameter iyi-flowmeter yendawo eguquguqukayo esetshenziswa kakhulu.Iqukethe i-tube tapered;lapho uketshezi ludlula epayipini, luphakamisa ukuntanta.Ukugeleza kwe-volumetric okukhudlwana kuzobeka ingcindezi eyengeziwe ku-float, ngaleyo ndlela kukhuphule phezulu.Ku-liquid, ijubane loketshezi olugelezayo lihlanganiswa ne-buoyancy ukwandisa ukuntanta;ngegesi, i-buoyancy ayinaki, futhi ukuphakama kwe-float ikakhulukazi kusethwe isivinini segesi kanye nokucindezela okubangelwayo.
Ngokuvamile, ipayipi ifakwe mpo.Uma kungekho ukugeleza, ukuntanta kuma phansi, kodwa ngokushesha nje lapho uketshezi lugeleza lusuka phansi eshubhu, ukuntanta kuqala ukuphakama.Ngokufanelekile, ukuphakama okudlula kukho okuntantayo kuhambisana nesivinini soketshezi kanye nendawo eyi-annular phakathi kokuntanta nodonga lwamapayipi.Njengoba i-float ikhuphuka, ubukhulu bokuvulwa kwe-annular buyanda, okunciphisa umehluko wengcindezi kuyo yonke i-float.
Lapho amandla akhuphukayo asetshenziswa ukugeleza koketshezi kulinganisa isisindo sokuntanta, uhlelo lufinyelela ekulinganeni, ukuntanta kufinyelele endaweni engashintshi, futhi ukuntanta kumiswe ukugeleza koketshezi.Ungafunda ukuminyana kanye ne-viscosity yezinga lokugeleza koketshezi oluthile.Yiqiniso, ubukhulu nokwakheka kwe-rotameter kuzoxhomeka kuhlelo lokusebenza.Uma yonke into ilinganiswa futhi yalinganiswa ngendlela efanele, izinga lokugeleza lingafundwa ngokuqondile esikalini ngokusekelwe endaweni yokuntanta.Amanye ama-rotameters akuvumela ukuthi ulungise ngokuzenzakalelayo izinga lokugeleza usebenzisa ama-valve.Emiklamo yokuqala, ukuntanta kwamahhala kuzungeziswe nezinguquko kugesi nomfutho woketshezi.Ngenxa yokuthi ayazungeza, lawa madivaysi abizwa ngokuthi ama-rotameter.
Ama-rotameter ngokuvamile ahlinzeka ngedatha yokulinganisa kanye nezikali zokufunda eziqondile zoketshezi oluvamile (umoya namanzi).Ukunquma usayizi we-rotameter esetshenziswa nolunye uketshezi kudinga ukuguqulwa kwenye yalezi zakhiwo ezijwayelekile;oketshezini, okulingana namanzi yi-gpm;kumagesi, ukugeleza komoya kulingana nama-cubic feet ajwayelekile ngomzuzu (scfm).Abakhi bavamise ukuhlinzeka ngamathebula okulinganisa kulawa manani okugeleza ajwayelekile futhi bawasebenzise ngokuhambisana nemithetho yamaslayidi, ama-nomograms, noma isofthiwe yekhompyutha esetshenziselwa ukunquma usayizi we-rotameter.
I-rotameter eyisisekelo iwuhlobo lwenkomba ye-glass tube.Ithubhu yenziwe ngengilazi ye-borosilicate, futhi ukuntanta kungenziwa ngensimbi (imvamisa insimbi engagqwali engagqwali), ingilazi noma ipulasitiki.Ama-Buoy ngokuvamile anemiphetho ebukhali noma elinganisekayo, ezokhomba ukufundwa okuthile esikalini.Ama-Rotameter afakelwe okokugcina noma izixhumi ngokuya ngohlelo lokusebenza.Kungakhathalekile ukuthi hlobo luni lwezindlu noma ukufakwa kwetheminali, ishubhu yengilazi efanayo nenhlanganisela yensimbi engenasici ngokuvamile ingasetshenziswa.Njengoba umhlangano we-tube float empeleni wenza isilinganiso, lena yingxenye ebaluleke kakhulu yokumiswa.
Izikali zingasethwa ukuze zinikeze ukufundwa okuqondile komoya noma amanzi-noma zingabonisa isikali esilinganisiwe, noma ukugeleza kumayunithi omoya/amanzi, azoguqulelwa ekugelezeni koketshezi olufanele ngetafula lokubheka.
Isilinganiso se-rotameter esihlobene singaqhathaniswa netafula lokuxhumanisa lamagesi afana ne-nitrogen, umoya-mpilo, i-hydrogen, i-helium, i-argon ne-carbon dioxide.Lokhu kuzobonakala kunembe kakhudlwana, nakuba kungenangqondo ukufunda ngokuqondile esikalini.Isikali siklanyelwe kuphela uketshezi ezingeni lokushisa elithile kanye nokucindezela, njengomoya noma amanzi.Ngemuva kokuthi ukuguqulwa sekuqediwe, i-flowmeter efanele ingakunikeza amanani okugeleza oketshezi oluhlukahlukene ngaphansi kwezimo ezahlukahlukene.Ukusebenzisa izintanta eziningi kungakala amazinga okugeleza ahlukene ngesikhathi esisodwa.Ngokuvamile, ukufaka i-rotameter yeshubhu yengilazi ekuphakameni komugqa wokubona kungenza ukufunda kube lula.
Embonini, i-flowmeter yegesi yesivikelo sokuphepha iyindinganiso yokulinganisa amanzi noma ukugeleza komoya ngaphansi kwezimo ezijwayelekile.Bangakwazi ukukala amazinga okugeleza kufikela ku-60 GPM.Kuye ngezici zamakhemikhali zoketshezi lokulinganisa, ipulasitiki noma izigqoko zokugcina zensimbi zingasetshenziswa.
Kunezibonelo ezithile zoketshezi lapho amashubhu engilazi engeke asetshenziswe.Amanzi angaphezu kuka-90°C (194°F), i-pH yawo ephezulu athambise ingilazi;umusi omanzi unomphumela ofanayo.I-Caustic soda incibilikisa ingilazi;kanye nengilazi enamathiselwe ye-hydrofluoric acid: Kulezi zicelo, amapayipi ahlukene kufanele afunwe.
Amashubhu emitha yengilazi anomkhawulo wokucindezela kanye nezinga lokushisa, okuvame ukuba yizici ezikhawulela ukusebenza kwamashubhu engilazi rotameters.Amashubhu amancane angu-6 mm (1/4 intshi) angasebenza ngaphansi kwezingcindezi ezifika ku-500 psig.Ipayipi elikhudlwana elingu-51 mm (2 intshi) lingasebenza kuphela ngengcindezi engu-100 psig.Ama-rotameter engilazi awasasebenzi emazingeni okushisa acishe abe ngu-204°C (400°F), kodwa njengoba izinga lokushisa nokucindezela kuvame ukukala, lokhu kusho ukuthi ama-rotameter angase angakwazi ukusebenziseka emazingeni okushisa aphansi.Ukushisa okuphezulu kuzonciphisa ukucindezela okukhulu kokusebenza kwethubhu yeglasi.
Endabeni yokulinganisa igesi eminingi noma imifudlana ewuketshezi ngesikhathi esisodwa noma ukuxuba ndawonye endaweni eningi, ama-rotameters e-glass tube angasetshenziswa;nazo zifanelekile esimweni lapho uketshezi olulodwa lugeleza luphuma ngamashaneli amaningana ahlukene, kulokhu, amamitha okugeleza kwe-Multi-tube akuvumela ukuthi ufake ama-rotameter ayisithupha kudivayisi eyodwa yokubeka.
Amashubhu ensimbi ngokuvamile enziwa nge-aluminium, ithusi noma insimbi engagqwali futhi angasetshenziselwa amazinga okushisa aphezulu nezingcindezi.Njengoba bengabonisi obala, abalandeli bemishini noma kazibuthe abatholakala ngaphandle kweshubhu bangasetshenziswa ukucacisa indawo yokuntanta.Lapha, inhlanganisela yentwasahlobo nepiston inquma izinga lokugeleza.Khetha okokugcina kanye nezinye izinto ngokuya ngohlelo lokusebenza ukugwema ukugqwala noma ukulimala.Ngokuvamile, angasetshenziswa ukugqwala amashubhu engilazi ezimweni lapho isando samanzi ngokuzumayo sibaluleke kakhulu, noma ezimweni lapho izinga lokushisa eliphakeme noma ukucindezela (njengokucindezela okuhlobene nomusi noma ukucindezela) kuzolimaza i-rotameter yengilazi Uketshezi olubolayo.
Izibonelo zoketshezi lwe-rotameter lwamashubhu ensimbi oluqinile luhlanganisa i-alkali eqinile, i-alkali eshisayo, i-fluorine, i-hydrofluoric acid, amanzi ashisayo, umusi, udaka, igesi eneasidi, izithasiselo nensimbi encibilikisiwe.Angasebenza ngaphansi kwezingcindezi ezifika ku-750 psig kanye namazinga okushisa afika ku-540°C (1,000°F), futhi angakala ukugeleza kwamanzi afike ku-4,000 gpm noma komoya afinyelele ku-1,300 scfm.
I-rotameter yeshubhu yensimbi ingasetshenziswa njengesidlulisi sokugeleza esinokulawula kwe-analog noma kwedijithali.Bangakwazi ukubona indawo entantayo ngokusebenzisa ukuhlangana kazibuthe.Bese, lokhu kuhambisa isikhombi ku-magnetic spiral ukuze sibonise indawo yokuntanta ngaphandle.Ama-transmitter ngokuvamile asebenzisa ama-microprocessors ukuze anikeze i-alamu nokuphuma kwe-pulse ukukala nokudlulisa ukugeleza koketshezi.
Izinzwa zengcindezi ye-heavy-duty/industrial zine-elastic coating futhi zingasebenza ngaphansi kwezimo ezinzima zezimboni.Ngokuvamile sebenzisa isidluliseli esinganwebeka se-4-20 mA: sinokumelana okukhulu nomsindo kagesi, okungase kube yinkinga kumasayithi wezimboni ezinzima.
Njengoba kushiwo ngaphambili, maningi amathuba okukhetha izinto zokwakha kanye nemiklamo yokuntanta, ama-filler, ama-O-rings kanye nokufakwa kokuphela.Amashubhu engilazi yiwona avame kakhulu, kodwa amashubhu ensimbi angasetshenziswa ngaphansi kwezimo lapho ingilazi izophuka khona.
Ngaphandle kwengilazi, ipulasitiki, insimbi noma insimbi engagqwali, ukuntanta kungenziwa futhi nge-carbon steel, isafire kanye ne-tantalum.I-float inomphetho obukhali endaweni lapho ukufundwa kufanele kubonwe ngesilinganiso seshubhu.
Ama-Rotameters angasetshenziswa ku-vacuum.Ivalvu ebekwe endaweni yokuphuma kwemitha ingakuvumela lokhu ukuthi kwenzeke.Uma ububanzi bokugeleza okulindelekile bukhulu, i-double ball rotor flowmeter ingasetshenziswa.Ngokuvamile kuba nebhola elimnyama lokulinganisa ukugeleza okuncane, kanye nebhola elikhulu elimhlophe lokulinganisa ukugeleza okukhulu.Funda ibhola elimnyama lize lidlule isikali, bese usebenzisa ibhola elimhlophe ukufunda.Izibonelo zebanga lokulinganisa zifaka amabhola amnyama anebanga lesivinini elingu-235-2,350 ml/min, namabhola amhlophe anebanga eliphezulu elingu-5,000 ml/min.
Ukusetshenziswa kwamashubhu epulasitiki angashintsha amanzi ashisayo, isitimu kanye noketshezi olubolayo ngezindleko eziphansi.Zingenziwa nge-PFA, i-polysulfone noma i-polyamide.Ukuze ugweme ukugqwala, izingxenye ezimanzi zingenziwa ngensimbi engagqwali nge-FKM noma i-Kalrez® O-rings, i-PVDF noma i-PFA, i-PTFE, i-PCTFE.
Kububanzi obungu-4:1, i-rotameter yaselabhorethri ingalinganiswa ibe nokunemba okungu-0.50% AR.Ukunemba kwama-rotameters ezimboni kubi kakhulu;ngokuvamile i-FS ebangeni lika-10:1 i-1-2%.Ngezinhlelo zokusebenza zokuhlanza nokudlula, iphutha licishe libe ngu-5%.
Ungakwazi ukusetha ngokuzenzakalelayo izinga lokugeleza, ulungise ukuvulwa kwe-valve, futhi ubheke isikali ngesikhathi esifanayo ukuze ulinganise izinga lokugeleza kwenqubo;lapho ulinganisa inqubo ethile ngaphansi kwezimo ezifanayo zokusebenza, i-rotameter inganikeza izilinganiso eziphindaphindwayo, futhi umphumela wokulinganisa ungaphakathi kuka-0.25% wezinga lokugeleza langempela.
Nakuba i-viscosity incike ekuklanyeni, lapho i-rotor viscosity ishintsha encane, i-rotameter ngokuvamile ayishintshi kakhulu: i-rotameter encane kakhulu esebenzisa isilinganiso esiyindilinga iyona ebucayi kakhulu, kanti i-rotameter enkulu ayizwani.Uma i-rotameter idlula umkhawulo wayo we-viscosity, ukufundwa kwe-viscosity kudinga ukulungiswa;ngokuvamile, umkhawulo we-viscosity unqunywa yizinto ezibonakalayo kanye nokuma kwe-float, futhi umkhawulo uzonikezwa umenzi we-rotameter.
Ama-rotameter ancike ekumineni koketshezi.Uma kulula ukushintsha, ungasebenzisa ama-float amabili, enye incike kuvolumu kanti enye isetshenziselwa ukulungisa ukuminyana.Ngokuvamile, uma ukuminyana kokuntanta kufanelana nokuminyana koketshezi, ukuminyana kuyashintsha ngenxa ye-buoyancy kuyoba okubaluleke kakhulu, okuholela ekushintsheni okwengeziwe endaweni yokuntanta.Ama-Rotameters okugeleza okukhulu afaneleka kakhulu kuketshezi lwe-viscosity oluphansi njengejusi kashukela eluhlaza, uphethiloli, uphethiloli wejethi nama-hydrocarbon alula.
Ukumiswa kwepayipi elikhuphuka nomfula akufanele kuthinte ukunemba kokugeleza;ungafaki i-flowmeter ngemva kokuba indololwane ifakwe epayipini.Enye inzuzo iwukuthi-ngoba uketshezi luhlala ludlula ku-rotameter, kufanele lugcinwe luhlanzekile futhi lungenayo imfucumfucu;noma kunjalo, uketshezi oluhlanzekile kufanele lusetshenziselwe le njongo, ngaphandle kokuthi kungenzeka ukuthi kube nezinhlayiya noma ukumboza udonga lwamapayipi, okuzokwenza ukuthi i-rotameter Iba yiphutha futhi ekugcineni iba yinto engasetshenziswa.
Lolu lwazi lutholiwe, lwabuyekezwa futhi lwashintshwa ezintweni ezinikezwe yi-OMEGA Engineering Ltd.
I-OMEGA Engineering Ltd. (Agasti 29, 2018).Isingeniso esilinganisweni se-rotameter.AZoM.Kubuyiswe kusukela ku-https://www.azom.com/article.aspx?ArticleID=15410 ngo-December 6, 2020.
I-OMEGA Engineering Ltd. "Isingeniso Sezinga Lokugeleza Le-Rotameter".AZoM.Disemba 6, 2020. .
I-OMEGA Engineering Ltd. "Isingeniso Sezinga Lokugeleza Le-Rotameter".AZoM.https://www.azom.com/article.aspx?ArticleID=15410.(Kufinyelelwe ngoDisemba 6, 2020).
I-OMEGA Engineering Ltd., 2018. Isingeniso sokulinganisa i-rotameter.I-AZoM, ibukwe ngoDisemba 6, 2020, https://www.azom.com/article.aspx?I-ArticleID = 15410.
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