Madoppler ultrasonic flowmeterszvishandiso zvinokosha pakuyera kuyerera kwemvura mumabasa akasiyana-siyana. Zvisinei, zvinhu zvakawanda zvinogona kukonzera kushanda kusina kururama kana kuti kusina kunaka kwezviyero izvi.
1. Zvimiro zvemvura
- Kuwanda kweGasi: Mvura ine gasi rakawanda inogona kukonzera matambudziko makuru. Munzira, mabubble egasi anoshanda sevanoparadzira mafungu e ultrasonic. Kana gasi riri mumvura,ultrasonicChiratidzo chinotumirwa ne transducer chinosangana nemabubble aya egasi. Sezvo acoustic impedance yegasi yakaderera zvikuru pane yemvura, chikamu chikuru chesimba re ultrasonic chinoratidzwa kana kupararira kana chasvika pa gasi - liquid interface. Izvi zvinokanganisa chiratidzo chinogamuchirwa ne sensor, zvichiita kuti zviomere kuti flowmeter ione nemazvo Doppler shift inokonzerwa nemvura inofamba. Nekuda kweizvozvo, mwero wekuyerera wakayerwa unogona kusiyana zvakanyanya kubva pahuwandu chaihwo.
- Kuwanda kwezvikamu uye saizi:Madoppler ultrasonic flowmeterskuvimba nekuratidzwa kwemafungu e ultrasonic kubva muzvikamu kana kusawirirana mumvura. Kana huwandu hwezvikamu hwakaderera zvakanyanya, panogona kunge pasina zvinhu zvinoratidzira zvakakwana kuti pave nechiratidzo chakasimba chakakwana chekuyera kwakarurama. Kusiyana neizvi, kana huwandu hwezvikamu hwakanyanya, kuratidzwa kwakawanda kunogona kuitika, zvichikonzera kukanganiswa kwechiratidzo. Pamusoro pezvo, saizi yezvikamu inokosha. Zvikamu zvidiki zvingasaratidze mafungu e ultrasonic zvinobudirira, nepo zvikamu zvikuru zvichigona kukonzera kupararira kwakanyanya uye kunyudzwa kwechiratidzo. Hukuru hwezvikamu hwakakwana hwekuyera kwakarurama hunoenderana nehuwandu hwe transducer ye ultrasonic inoshandiswa mu flowmeter.
- Kusviba: Mvura ine viscosity yakawanda inogona kunonotsa kufamba kwezvikamu mukati memvura. Sezvo Doppler shift ine chekuita nekumhanya kwezvikamu zvinoratidzira, kudzikira kwekukurumidza kwezvikamu nekuda kwekusviba kwakanyanya kunogona kukonzera kusatarisirwa kwehuwandu hwekuyerera. Uyezve, mvura ine viscosity yakawanda inogona kukonzera kunyorova kwemafungu e ultrasonic, zvichideredza chiyero chechiratidzo - kune - ruzha uye zvichiwedzera kuderedza kururama kwekuyera.
2. Kuiswa - Zvinhu Zvine Chekuita
- Geometry yepombi uye Kuiswa kweSensor: Maitiro epombi ane basa rakakosha. Kana pombi ine makombama, magokora, kana shanduko yakangoerekana yaitika padhayamita pedyo nenzvimbo yekuisa flowmeter, flow profile inogona kukanganiswa. Kuyerera uku kusina kufanana kunogona kukonzera kuti chiratidzo che ultrasonic chibatane nemvura nenzira isingafungidzike. Semuenzaniso, mukukombama kwepombi, kugoverwa kwekukurumidza kwemvura kunokanganiswa, uye Doppler shift inoyerwa nesensor inogona kusaratidza zvakanaka avhareji yekufamba kwemvura muchikamu chose chepombi. Pamusoro pezvo, kuiswa kwesensor kusina kururama, sekunge kuisa sensor pedyo zvakanyanya nepipe fitting kana pakona isina kukodzera, kunogona kutungamira pakuyera kusina kururama. Sensor inofanira kuiswa muchikamu chakatwasuka chepombi uko kuyerera kwacho kwakagadzirwa zvizere kuti ive nechokwadi chemhedzisiro yakavimbika.
- Zvinhu zvepaipi uye ukobvu hwemadziro: Zvinhu zvakasiyana zvepaipi zvine hunhu hwakasiyana hweacoustic. Semuenzaniso, zvimwe zvinhu zvinogona kunyudza kana kuderedza mafungu e ultrasonic kupfuura zvimwe. Kana zvinhu zvepaipi zvine acoustic absorption coefficient yakakwira, simba re ultrasound signal rinosvika pa sensor inogamuchira richadzikira. Saizvozvowo, madziro epaipi akakora anogonawo kukonzera kudzikira kwesignali. Izvi zvinogona kuita kuti zviomere flowmeter kuonaDopplerchinja nemazvo, kunyanya kana simba rechiratidzo chekutanga ratove diki.
3. Mamiriro Ekushanda
- Rudzi rweKumhanya Kwemvura: MaDoppler ultrasonic flowmeters akagadzirwa kuti ashande mukati merudzi rwakati rwekumhanya kwemvura. Kana kumhanya kwemvura kwakaderera zvakanyanya, Doppler shift inogona kunge iri diki zvekuti haikwanise kuonekwa nemazvo nesensor. Kune rumwe rutivi, kana kumhanya kwemvura kwakakwira zvakanyanya, chiratidzo chinogona kuzara, uye flowmeter ingasakwanisa kuyera kushanduka kweDoppler nemazvo. Muzviitiko zvese izvi, mwero wekuyerera kwemvura wakayerwa hauzove wakarurama.
- Kuchinja-chinja kweTembiricha: Tembiricha inogona kukanganisa hunhu hwemvura netransducer ye ultrasonic. Kuchinja kwetembiricha yemvura kunogona kuchinja density yayo, viscosity, uye kumhanya kweruzha mukati memvura. Kuchinja uku kunogona kukanganisa kupararira kwemafungu e ultrasound uyeDopplerkuyerwa kwechinguva. Pamusoro pezvo, kusiyana kwetembiricha kunogonawo kukanganisa mashandiro emuchina wekushandura magetsi. Semuenzaniso, tembiricha yakanyanya inogona kukonzera kuti muchina wekushandura magetsi uwedzere kana kudzika, zvichichinja frequency yawo yekunzwa uye zvingangokonzera kuyerwa kusina kururama.
Mukupedzisa, zvinhu zvakasiyana-siyana zvine chekuita nehunyanzvi hwemvura, kuiswa, uye mamiriro ekushanda zvinogona kukonzeraMadoppler ultrasonic flowmeterskupa zviyero zvisina kururama. Kunzwisisa nekugadzirisa zvinhu izvi nemazvo kwakakosha pakuona kuti maflowmeter aya anoshanda zvakanaka mukushanda kwakavimbika.
Nguva yekutumira: Kurume-10-2025