Doppler ultrasonic flowmeter inoshandisa fizikisi yeDoppler effect, chero kuyerera kwemvura kana paine discontinuity kucharatidzwa ultrasonic signal frequency shift (ndiko kuti, musiyano wechikamu chechiratidzo), nekuyera musiyano wechikamu, flow rate inogona kuyerwa. Frequency shift ibasa re linear reflow rate, iro rinosefetwa kuburikidza necircuit kuti rigadzire chiratidzo chakagadzikana, chinodzokororwa, uye chinotevedzana. Discontinuities idzi dzinogona kunge dziri suspended bubbles, solids, kana interfaces nekuda kwekukanganiswa kwefluid. Masensa anogadzira uye anogamuchira ultrasonic signals, uye transmitters inogadzira masaini kuti ipe analog output yekuyerera uye cumulant display. Lanry Instruments Doppler ultrasonic flowmeter ine tekinoroji yakasarudzika yedhijitari yekusefa uye frequency modulation demodulation technology, ichigadzira otomatiki waveform signal yakagamuchirwa, inogona kuyera lining yepipe, uye vibration yepipe haina kusimba zvakanyanya. Kuti uise sensor, kumusoro nekuzasi kwenzvimbo yekuisa inofanira kunge iine chikamu chepipe refu chakatwasuka. Kazhinji, kumusoro kunoda 10D yepipe yakatwasuka, uye pasi panoda 5D yepipe yakatwasuka. D ndiyo dhayamita yepipe.
MaDoppler ultrasonic flowmeters akagadzirirwa kuyera mvura ine tsvina yakawanda senge zvidimbu zvakaoma kana mabubbles kana mvura yakasviba zvishoma. Anonyanya kushandiswa muminda inotevera:
1) Tsvina yepakutanga, tsvina ine mafuta, mvura yakasviba, mvura yakasviba inotenderera, nezvimwewo.
2) Zvinhu zvine mvura zvine zvidimbu nemabhurumu mukugadzirwa kwemaindasitiri, zvakaita semakemikari, marara ane chepfu, nezvimwewo.
3) Mvura ine silt nezvimedu, zvakaita semvura inocherwa netsvina, mvura inocherwa nemafuta, kudhonza simbi, nezvimwewo.
4) marudzi ese etsvina ine matope, senge pulp, pulp, mafuta asina kucheneswa, nezvimwewo.
5) Kuiswa kwepombi iyi paindaneti kunogona kubhurwa, izvo zvinonyanya kukodzera kuyera kuyerera kwetsvina yepakutanga yedhayamita hombe yepombi.
6) Kuongororwa kwekuyerera kwemvura mumunda uye kuyedzwa kwekuyerera kwenzvimbo iri pamusoro apa, uye kuongororwa kwenzvimbo kwemamwe ma flowmeter.
Nguva yekutumira: Nyamavhuvhu-20-2021