Izinhlobo nezimiso zama-flowmeters

Ⅰ. I-flowmeter ihlukaniswa ngokuya ngomgomo wokulinganisa

1. Izimiso zemishini: Izinsimbi zezimiso ezinjalo zifaka uhlobo lwengcindezi ehlukile nohlobo lwe-rotor kusetshenziswa ithiyori kaBernoulli; uhlobo lwenhliziyo nohlobo lweshubhu elihambisakayo kusetshenziswa umfutho; uhlobo lwesisindo oluqondile usebenzisa umthetho wesibili kaNewton; usebenzisa umfutho oketshezi uhlobo oluhlosiwe lwesimiso; uhlobo lwe-turbine usebenzisa umfutho we-angular; Uhlobo lwe-vortex nohlobo lomgwaqo we-vortex kusetshenziswa umgomo we-oscillation uketshezi;

2. Umgomo kagesi: Izinsimbi ezisetshenziselwe lesi simiso zifaka uhlobo lwe-electromagnetic, uhlobo lwe-capacitive, uhlobo lwe-inductive, uhlobo lokumelana nobunzima, njll.

3. Umgomo we-Acoustic: Kukhona uhlobo lwe-ultrasonic lokulinganisa ukugeleza kusetshenziswa umgomo we-acoustic. Uhlobo lwe-Acoustic (uhlobo lwe-habck wave), njll.

4. Umgomo oshisayo: Kukhona uhlobo olushisayo, uhlobo oluqondile olushisayo, uhlobo olushisayo olungaqondile, njll. okusebenzisa isimiso esishisayo ukukala ukugeleza.

5. Umgomo we-optical: uhlobo lwe-laser, uhlobo lwe-photoelectric, njll.

6. Izimiso zomzimba: resonance kazibuthe wenuzi, imisebe yenuzi, njll.

7. Eminye imigomo: kunemigomo yokumaka (umgomo wokuthengisa, umgomo kazibuthe wenuzi), imigomo ehlobene nayo, njll.

Ⅱ. Ukuhlukaniswa ngokuya ngomgomo wesakhiwo se-flowmitera

I-LEFOO flowmeter isetshenziselwa ukukala ukugeleza kwevolumu koketshezi lokuqhuba kanye ne-slorr kumapayipi avaliwe. SineI-electromagnetic flowmeter, I-vortex flowmeter andUkugeleza kwe-turbine, Okufanele iminyango eminingi. Ngokwesimo sangempela semikhiqizo yamanje yokugeleza, ngokuya ngomgomo wesakhiwo se-flowmeter, ingahlukaniswa cishe kulezi zinhlobo ezilandelayo:

1. Volumetric flowmeter

Ukugeleza okuhle kokufuduka kulingana nesiqukathi sevolumu ejwayelekile, elinganisa ngokuqhubekayo ukugeleza. Lapho ukugeleza kukhulu, kulapho kwenziwa izikhathi eziningi ukulinganisa, futhi phezulu imvamisa yokukhipha.

Umgomo wokugeleza okuhle kokufuduka kulula, futhi ilungele ukukala uketshezi olune-viscosity ephezulu nenombolo ephansi yeReynolds. Ngokwesimo somzimba ojikelezayo, imikhiqizo ekhiqizwe njengamanje ihlukaniswe yaba: ama-oval browmeters, Ukugeleza kwamasondo okhalo (izimpande ezigelezayo), i-piston ejikelezayo ne-scraper flowmeters efanele ukulinganisa ukugeleza koketshezi; Ama-develometers wohlobo lwe-servo alungele ukulinganisa ukugeleza kwegesi iVolumetric flowmeter, uhlobo lwe-membrane kanye ne-rotary flowmeter, njll.

2. I-impeller flowmeter

Umgomo wokusebenza we-impeller flowmeter ukuthi i-impeller ibekwa kuketshezi okufanele ilinganiswe, futhi ijikelezwa ngomthelela wokugeleza koketshezi, futhi izinga lokugeleza libonakala ngejubane lokujikeleza kwe-impeller. Ama-pluller flowmeter ajwayelekile angamamitha amanzi nama-turbine flowmeter, futhi izakhiwo zazo zingaba uhlobo lokukhipha umshini wokudlulisa noma uhlobo lokukhipha ugesi. Ngokuvamile, ukunemba kokukhishwa kwemitha yamanzi ngokudluliswa kwemishini kuphansi, futhi iphutha licishe libe ngu- ± 2%, kepha isakhiwo silula futhi izindleko ziphansi. Ikhiqizwe ngobuningi eChina, futhi ihlanganiswe, yenziwe ngokujwayelekile futhi yenziwa i-serial. Ukunemba kokukhishwa kwe-turbine flowmeter ngesiginali ye-pulse kagesi kuphezulu, futhi iphutha elijwayelekile ngu-0.2% ~ 0.5%.

3. Ukugeleza kwengcindezi okuhlukile

Ukugeleza kwengcindezi okuhlukile kuqukethe idivayisi eyinhloko kanye nedivayisi yesibili. Idivayisi eyinhloko ibizwa ngento yokulinganisa ukugeleza, efakwe ku-payipi loketshezi olulinganisiwe ukukhiqiza umehluko wengcindezi olingana nezinga lokugeleza (i-velocity) ukuthola isisetshenziswa sesibili ukukhombisa ukugeleza. Idivayisi yesibili ibizwa ngokuthi insimbi yokubonisa. Ithola isignali yengcindezi ehlukile eyenziwe ngento yokulinganisa bese iyiguqula ibe ukugeleza okuhambisanayo kokuboniswa.

Idivayisi eyinhloko yemitha yokuhamba kwengcindezi yokuhlukanisa imvamisa iyidivayisi yokuthimba noma ingcindezi enamandla yokulinganisa i-de. isisebenzi (i-pitot tube, I-hubhu ye-velocity efanayo, njll.).. Idivayisi yesibili iyizinhlobonhlobo zamageji wengcindezi yomshini, kagesi kanye nehlangene ehlangene enezinsimbi zokubonisa zokugeleza. Izinto ezibucayi zengcindezi ehlukile zamageji wengcindezi ehlukile ikakhulu yizinto ezincane.

Njengoba ingcindezi yokuhlukanisa nokugeleza kusebudlelwaneni bempande yesikwele, izinsimbi zokubonisa zokugeleza zifakwe idivayisi yezimpande eziyisikwele ukulinganisa isikali sokugeleza. Izinsimbi eziningi nazo zihlonyaIdwe ngedivayisi yokugeleza yokuqongelela ukukhombisa ukugeleza okuqoqiwe kokubalwa kwezomnotho. Le ndlela yokulinganisa ukugeleza kusetshenziswa ingcindezi yokuhlukanisa inomlando omude futhi iyavuthwa. Ngokuvamile isetshenziswa ezikhathini ezibaluleke kakhulu emhlabeni jikelele, kubalwa cishe ama-70% wezindlela ezahlukahlukene zokulinganisa ukugeleza. Lolu hlobo lwemitha lusetshenziswa ekulinganisweni kokugeleza kwesitimu esikhulu, amanzi okuphakela, i-condensate, njll. Imikhiqizo ekhiqizwe njengamanje yile: i-orifice flowmeter, i-wedge flowmeter, i-venturi tube flowmeter, kanye ne-pitot tube.I-LEFOO Industrial CO LTDUngakunikeza imininingwane eyengeziwe mayelana nama-flowmeter.