Munyika yekuyerwa kwemvura, ma electromagnetic flowmeters uye ma ultrasonic flowmeters anoshandiswa zvakanyanya. Chimwe nechimwe chine hunyanzvi hwakasiyana, uye kunzwisisa misiyano yavo kwakakosha pakuita sarudzo chaiyo mumashandisirwo akasiyana-siyana emaindasitiri.
1. Nheyo dzeKushanda
Mafambiro emagetsi emagetsi
Ma electromagnetic flowmeters anoshanda zvichibva pamutemo waFaraday we electromagnetic induction. Kana conductive fluid ichiyerera nemu magnetic field inogadzirwa ne meter, voltage inokonzereswa mumvura. Iyi induced voltage inoenderana nekumhanya kwemvura. Pamasvomhu, induced voltage E inopiwa ne E=BDV, uko B iri simba re magnetic field, D iri dhayamita yechubhu yekuyera, uye V iri avhareji yespeed yemvura. Iyi nheyo inobvumira kuyera kwakarurama kwe conductive fluids.
Mafambiro eUltrasonic
Ma ultrasonic flowmeters anoshandisa ma sound waves kuyera fluid velocity. Kune mhando mbiri huru: transit - nguva uye Doppler. Transit - nguva ultrasonic flowmeters inoyera mutsauko wenguva inotora kuti ma ultrasound signals afambe kumusoro nekudzika mumvura. Flow velocity inoverengerwa kubva pamusiyano wenguva iyi. Doppler ultrasonic flowmeters, kune rumwe rutivi, inovimba neDoppler effect. Kana ma ultrasonic waves akaonekwa kubva pazvidimbu kana ma bubbles ari mumvura, frequency yema reflection waves inochinja. Flow velocity inoonekwa kubva pakuchinja uku kwe frequency.
2. Kururama kweKuyera
Mafambiro emagetsi emagetsi
Ma electromagnetic flowmeters anopa kunyatsojeka, kazhinji mukati me ±0.2% kusvika ±1% yehuwandu hwakayerwa. Anopa mashandiro akafanana pamusoro pehuwandu hwakasiyana hwehuwandu hwemvura inoyerera, zvichiita kuti akwanise kushandiswa uko kuyerwa kwakanyatsojeka kwakakosha, senge mumaindasitiri emishonga nemakemikari.
Mafambiro eUltrasonic
Kururama kwema ultrasonic flowmeters kunosiyana zvichienderana nerudzi. Transit - time ultrasonic flowmeters dzinogona kuwana kururama kwe ±0.5% kusvika ±2%, nepo Doppler ultrasonic flowmeters dzinowanzova nekunyatsojeka kwakaderera, kunenge ±2% kusvika ±5%. Zvinhu zvakaita sekupararira kwezvidimbu kana mabubbles mumvura zvinogona kukanganisa zvikuru kururama kwema Doppler flowmeters.
3. Zvinonhuwirira Zvinoshanda
Mafambiro emagetsi emagetsi
Ma flowmeter aya akakodzera ma conductive fluids chete. Mvura yacho inofanira kunge iine conductivity yemagetsi shoma, inowanzo pfuura 5 μS/cm. Anowanzoshandiswa kuyera kuyerera kwemvura, mvura yakasviba, uye mishonga yakasiyana-siyana yemakemikari.
Mafambiro eUltrasonic
Ma ultrasonic flowmeters anogona kushandiswa pamvura yakachena neyakasviba. Ma flowmeters e transit-time anoshanda zvakanaka nemvura yakachena kana yakasviba zvishoma, nepo ma Doppler flowmeters akakodzera mvura ine huwandu hwakawanda hwezvinhu zvakasungirirwa kana mabubbles, zvakaita se slurry ne sewage.
4. Zvinodiwa pakuisa
Mafambiro emagetsi emagetsi
Ma electromagnetic flowmeters anoda chikamu chepombi yakatwasuka kumusoro nepasi kuti ave nechokwadi chekuti mvura inoyerera zvakaenzana. Kazhinji, pombi yakatwasuka kumusoro ine dhayamita 5 kusvika ku10 uye dhayamita 2 kusvika ku5 dzinokurudzirwa. Dzinofanirwawo kuiswa panzvimbo ine mvura yakazara mupombi.
Mafambiro eUltrasonic
Kuiswa kwe ultrasonic flowmeters kunochinjika zviri nyore. Clamp - pa ultrasonic flowmeters inogona kuiswa kunze pasina kucheka pombi, zvichideredza nguva yekuisa nemari. Zvisinei, kuisa nemazvo kuchiri kuda kurongeka kwakakodzera uye kufunga nezvezvinhu zvakaita sehukobvu hwemadziro epombi nezvinhu.
5. Mutengo
Mafambiro emagetsi emagetsi
Ma electromagnetic flowmeters anowanzo kudhura zvakanyanya nekuda kwekugadzirwa kwawo kwakasimba. Zvisinei, kuvimbika kwawo kwenguva refu uye kururama kwawo kunogona kukonzera kudzikira kwemitengo mumashandisirwo apo kuyerwa kwakarurama kwakakosha.
Mafambiro eUltrasonic
Michina yekuongorora mafambiro emvura, kunyanya michina yekusimbisa mafambiro emagetsi, inowanzo shanda zvakanyanya kana tichitarisa mari yekutanga. Isarudzo yakanaka kune mashandisirwo ayo asina kunyanya kukosha kana kuti nyore kuisa zvinhu.
Mukupedzisa, ma electromagnetic flowmeters uyema ultrasonic flowmeterschimwe nechimwe chine zvakanakira nezvachinogumira. Nekunyatsofunga nezvezvinhu zvakaita semisimboti yekushanda, kururama kwekuyera, mvura inoshanda, zvinodiwa pakuiswa, uye mutengo, mainjiniya nevashandisi vanogona kusarudza yakakodzera.chiyero cheflowmeternekuda kwezvishandiso zvavo chaizvo.
Nguva yekutumira: Kubvumbi-08-2025