Doppler effect mu ultrasonic flow meter chiitiko apo frequency ye ultrasound signal inochinja nekuda kwekufamba kwezvikamu kana mvura iri mupombi. Kuchinja uku kwefrequency kunoshandiswa kuona kumhanya kwemvura, uye kubva pane izvi, flow rate inogona kuverengerwa.
Nheyo yekushanda kweDoppler Effect muUltrasonic Flow Meters:
Mu ultrasonic flow meter inoshandisa Doppler effect, sisitimu inoshanda seinotevera:
Kutapurirana kweMafungu eUltrasonic: Chiyero chekuyerera kwemvura chinotapurirana mafungu eUltrasonic mumvura kuburikidza netransducer.
Kuratidzwa kweZvidimbu: Kazhinji, mvura yacho haina kuchena asi ine zvidimbu zvakasungirirwa, mabhubhu, kana zvimwe zvinhu zvisina kufanana. Kana mafungu e ultrasonic akarova zvidimbu izvi zvinofamba, anodzoserwa ku transducer.
Kuchinja kweMafambiro: Kufamba kwezvikamu kunoita kuti mafambiro ewave reflectional ultrasound achinje:
Kana kuyerera kwemvura kuri kufamba kuchienda kune transducer, frequency inoonekwa ichave yakakwira (positive Doppler shift).
Kana kuyerera kwemvura kuri kubva pa transducer, frequency inoonekwa ichave yakaderera (negative Doppler shift).
Kuverenga Kuchinja Kwenguva: Huwandu hwekuchinja kwenguva hunoenderana zvakananga nekumhanya kwemvura. Kufamba kwemvura nekukurumidza, kuchinja kwenguva kunowedzera.
Kuverenga Mwero weKuyerera: Nekuyera Doppler shift uye kuziva hunhu hwemvura uye geometry yepombi, flow meter inogona kuverenga kumhanya kwemvura. Mwero wekuyerera unogona kuwanikwa nekuwedzera kumhanya kwemvura nenzvimbo yepakati pepombi.
Zvinhu ZvinokanganisaDoppler Effect muUltrasonic Flow Meters:
Kuwanda kwezvikamu: Doppler effect inoenderana nekuvapo kwezvikamu (kana mabubbles) mukati memvura. Kana mvura yacho yakachena kwazvo kana isina zvinhu zvakasimba zvakamira, mafungu e ultrasonic anogona kusaratidzwa zvakakwana, zvichikonzera kuyerwa kusina kururama kana kutadza kushanda.
Saizi yezvikamu: Zvikamu zvikuru kana mabhurumu anoratidza mafungu e ultrasonic zvinobudirira, zvichiita kuti Doppler shift ive nyore kuona. Zvikamu zvidiki zvingasaburitsa kuratidzwa kwakasimba zvakakwana kuti zvionekwe nesystem.
Ruzivo Rwekuyerera: Ruzivo rwekuyerera (rune nyonganyonga kana kuti rwakaomarara) runogona kukanganisa kururama kwekuyera kweDoppler. Kazhinji, maDoppler metres akakodzera zviri nani pakuyerera kwenyonganyonga, uko zvidimbu zvinofamba nenzira isina kurongeka uye isina kurongeka.
Hunhu hwemvura: Kumhanya kweruzha mumvura kunokanganisa kuchinja kweDoppler. Chiyero chingada kugadziriswa kuti chienzaniswe nemhando dzakasiyana dzemvura, sezvo kumhanya kweruzha kuchisiyana zvichienderana nehuwandu hwemvura, tembiricha, uye chimiro chayo.
Mhando dzeMamita eDoppler Ultrasonic Flow:
Mamita eKuyerera kweDoppler yeClamp-On: Mamita aya haadi kucheka mupombi. Anobatirira kunze kwepombi uye anoyera mafambiro emafungu e ultrasonic paanopfuura nemumvura.
Mamita eKuyerera kweDoppler muInline: Mamita aya anoiswa zvakananga mupaipi, uko masensa e ultrasonic anotumira uye anogamuchira mafungu eruzha kubva mukati memvura.
Nguva yekutumira: Zvita-31-2024