Abstract
Kuyerera kwemamita zvishandiso zvakakosha mumaindasitiri maitiro ekutonga, kuyerwa kwesimba, uye kutarisa kwezvakatipoteredza. Iri bepa rinofananidza misimboti yekushanda, hunyanzvi hunhu, uye yakajairwa mashandisirwo emagetsi ekuyerera kwemamita, ultrasonic kuyerera kwemamita, uye gasi kuyerera kwemamita. Electromagnetic flow metres akakodzera kuitisa zvinwiwa, ultrasonic kuyerera kwemamita inopa isingabatane yakakwirira-chaiyo kuyerwa, uye gasi kuyerera kwemamita inopa mhinduro dzakasiyana dzegasi media (semuenzaniso, gasi rechisikigo, magasi emaindasitiri). Tsvagiridzo inoratidza kuti kusarudza iyo yakakodzera kuyerera mita inogona zvakanyanya kuvandudza kuyerwa kwechiyero (kukanganisa <± 0.5%), kuderedza kushandiswa kwesimba (15% -30% kuchengetedza), uye optimize maitiro ekudzora maitiro.
1. Electromagnetic Flow Meters
1.1 Kushanda Nheyo
Zvichienderana neFaraday's Mutemo weElectromagnetic Induction, zvinwiwa zvinofambisa zvinoyerera kuburikidza nemagneti zvinogadzira voltage yakaenzana kuyerera velocity, iyo inoonekwa nemagetsi.
1.2 Unyanzvi Zvimiro
- Inokodzera Media: Conductive zvinwiwa (conductivity ≥5 μS/cm), senge mvura, asidhi, alkali, uye slurries.
- Zvakanakira:
- Hapana zvikamu zvinofamba, zvisingapfeke, hupenyu hurefu hwebasa
- Yakakura kuyerwa chiyero (0.1-15 m / s), kuregeredza kudzvinyirira kurasikirwa
- Kururamisa kwepamusoro (± 0.2% -± 0.5%), bidirectional kuyerera kuyerwa
- Kuganhurirwa:
- Haina kukodzera kune isiri-conductive fluid (semuenzaniso, mafuta, mvura yakachena)
- Inokwanisa kukanganiswa kubva kumabhuru kana zvidimbu zvakasimba
1.3 Mashandisirwo Akajairika
- Municipal Mvura / Mvura Yakasviba: Yakakura-diameter (DN300+) kuyerera kwekutarisa
- Kemikari Indasitiri: Corrosive fluid kuyerwa (semuenzaniso, sulfuric acid, sodium hydroxide)
- Chikafu/Mishonga: Hutsanana dhizaini (semuenzaniso, CIP kuchenesa)
2. Ultrasonic Flow Meters
2.1 Kushanda Nheyo
Miyero yekuyerera kumhanya uchishandisa yekufamba-nguva musiyano (nguva-ye-ndege) kana Doppler maitiro. Mhando mbiri huru:
- Clamp-on (Isina-invasive): Kuiswa nyore
- Insertion: Inokodzera mapaipi makuru
2.2 Unyanzvi Zvimiro
- Inokodzera Midhiya: Zvinwiwa uye magasi (mamodheru chaiwo aripo), anotsigira imwechete / yakawanda-chikamu kuyerera
- Zvakanakira:
- Hapana kudonhedza kudonhedza, kwakanakira kune yakakwira-viscosity zvinwiwa (semuenzaniso, mafuta asina kuchena)
- Yakakura kuyerwa chiyero (0.01–25 m/s), kunyatsoita kusvika ± 0.5%
- Inogona kuiswa online, yakaderera kugadzirisa
- Kuganhurirwa:
- Kukanganiswa nepombi zvinhu (semuenzaniso, simbi yakakandwa inogona kuderedza masaini) uye fluid homogeneity
- Kuyera-chaiyo kuyerwa kunoda kuyerera kwakadzikama (kudzivisa mhirizhonga)
2.3 Mashandisirwo Akajairika
- Oiri & Gasi: Kutariswa kwepombi kureba
- HVAC Systems: Kuyerwa kwesimba remvura inotonhora/inodziya
- Kutariswa Kwezvakatipoteredza: Rwizi/kuyerera kuyerera kuyerwa (inotakurika mhando)
3. Gasi Inoyerera Mamita
3.1 Mhando Huru uye Zvimiro
| Type | Principle | Magasi Akakodzera | Zvakanakira | Kuganhurirwa |
|---|---|---|---|---|
| Thermal Mass | Kupisa kupisa | Magasi akachena (mhepo, N₂) | Yakananga kuyerera kwehuwandu, hapana temp/pressure muripo | Haikodzeri magasi ane hunyoro/guruva |
| Vortex | Kármán vortex street | Steam, gasi rechisikigo | High temp/pressure resistance | Kunzwa kwakaderera pakuyerera kwakaderera |
| Turbine | Rotor kutenderera | Gasi rechisikigo, LPG | Kurongeka kwepamusoro (± 0.5%–±1%) | Inoda kubereka kuchengetedzwa |
| Differential Pressure (Orifice) | Mutemo waBernoulli | Industrial magasi | Mutengo wakaderera, wakamisikidzwa | Kurasikirwa kwakanyanya kwekusingaperi (~ 30%) |
3.2 Mashandisirwo Akajairika
- Energy Sector: Natural gasi kuchengetedza kuendesa
- Semiconductor Kugadzira: Yakakwira-kuchena gasi kutonga (Ar, H₂)
- Emission Monitoring: Flue gasi (SO₂, NOₓ) kuyerwa kwekuyerera
4. Kuenzanisa uye Kusarudza Nhungamiro
| Parameter | Electromagnetic | Ultrasonic | Gasi (Thermal Muenzaniso) |
|---|---|---|---|
| Yakakodzera Media | Conductive zvinwiwa | Zvinwiwa/magasi | Magasi |
| Kururama | ±0.2%–0.5% | ±0.5%–1% | ±1%–2% |
| Kurasikirwa Kwekumanikidza | Hapana | Hapana | Minimal |
| Installation | Pombi yakazara, pasi | Inoda kumhanya kwakatwasuka | Dzivisa kudedera |
| Mutengo | Pakati-pamusoro | Pakati-pamusoro | Low-pakati |
Mamiriro ekusarudza:
- Liquid Measurement: Electromagnetic for conductive fluids; ultrasonic yeasina-conductive/corrosive media.
- Kuyera kweGasi: Kupisa kwemagasi akachena; vortex for steam; turbine yekuendesa kuchengetedzwa.
- Zvinodiwa Zvinodiwa: Hutsanana kunyorera hunoda akafa-nzvimbo-yemahara madhizaini; high-temperature media inoda zvinhu zvinodzivirira kupisa.
5. Mhedziso uye Mafambiro Emangwana
- Electromagnetic flow mita inotonga maindasitiri emakemikari / emvura, nekufambira mberi mune yakaderera-conductivity fluid kuyerwa (semuenzaniso, Ultrapure mvura).
- Ultrasonic kuyerera kwemamita ari kukura mune yakangwara mvura / simba manejimendi nekuda kwekusina-kusangana mabhenefiti.
- Mamita ekuyerera kwegasi ari kushanduka akananga kune akawanda-parameter yekubatanidza (semuenzaniso, temp/kumanikidza muripo + kuumbwa kwekuongorora) kwepamusoro kunyatso.
- Yakazara seti yemaseva uye software isina waya module, inotsigira RS485 GPRS / 4g/WIFI/LORA/LORAWANKuti uwane rumwe ruzivo rwekuyerera kwemamita,
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Nguva yekutumira: Aug-13-2025