Pfupiso
Miyero yekuyerera kwemvura (flow meter) zvishandiso zvakakosha mukutonga mashandiro eindasitiri, kuyera simba, uye kutarisa nharaunda. Pepa iri rinoenzanisa misimboti yekushanda, hunhu hwehunyanzvi, uye mashandisirwo akajairika emamita ekuyerera kwemagetsi, mita yekuyerera kwemagetsi, uye mita yekuyerera kwemhepo. Miyero yekuyerera kwemagetsi yakakodzera mvura inoyerera, mita yekuyerera kwemagetsi inopa chiyero chisina kubatwa, uye mita yekuyerera kwemhepo inopa mhinduro dzakasiyana dzemagetsi akasiyana (semuenzaniso, gasi rechisikigo, magasi eindasitiri). Tsvagiridzo inoratidza kuti kusarudza mita yekuyerera yakakodzera kunogona kuvandudza kurongeka kwekuyera (kukanganisa < ± 0.5%), kuderedza kushandiswa kwesimba (kuchengetedza simba kubva pa15% kusvika pa30%), uye kugadzirisa kushanda zvakanaka kwekutonga kwemaitiro.
1. Mamita eKuyerera kweMagineti
1.1 Nheyo yekushanda
Zvichibva paMutemo waFaraday weElectromagnetic Induction, mvura inoyerera ichipfuura nemumunda wemagineti inogadzira voltage inoenderana nekumhanya kwekuyerera, iyo inoonekwa nemaelectrodes.
1.2 Zvinhu zveUnyanzvi
- Midziyo Yakakodzera: Zvinoyerera zvinofambisa mhepo (zvinofambisa mhepo ≥5 μS/cm), zvakaita semvura, acids, alkalis, uye slurry.
- Zvakanakira:
- Hapana zvikamu zvinofamba, hazvipfeki, uye hupenyu hurefu hwebasa
- Kuyera kwakafara (0.1–15 m/s), kurasikirwa nekumanikidzwa kushoma
- Kunyatsorongeka (± 0.2%–± 0.5%), kuyerwa kwekuyerera kwenzira mbiri
- Miganhu:
- Hazvina kukodzera mvura isingafambise mvura (semuenzaniso, mafuta, mvura yakachena)
- Inogona kukanganiswa nemabubbles kana solid particles
1.3 Mashandisirwo Akajairika
- Mvura/Mvura Yakasviba yeMunicipal: Kutarisa kuyerera kwemvura kwakakura (DN300+)
- Indasitiri yeMakemikoro: Kuyerwa kwemvura inoora (semuenzaniso, sulfuric acid, sodium hydroxide)
- Chikafu/Mishonga: Magadzirirwo ehutsanana (semuenzaniso, kuchenesa kweCIP)
2. Mamita eKuyerera kweUltrasonic
2.1 Nheyo yeKushanda
Anoyera kumhanya kwekuyerera kwemhepo achishandisa musiyano wenguva yekufamba (nguva-yekubhururuka) kana Doppler effect. Mhando mbiri huru:
- Kusunga-bata (Hazvipindi): Kuisa kuri nyore
- Kuisa: Yakakodzera mapaipi makuru
2.2 Zvinhu zveUnyanzvi
- Midziyo Yakakodzera: Mvura nemagasi (mhando dzakasiyana dziripo), inotsigira kuyerera kwechimwe chete/zvikamu zvakawanda
- Zvakanakira:
- Hapana kuderedzwa kwekumanikidzwa, zvakanaka kune mvura dzine viscosity yakawanda (semuenzaniso, mafuta asina kucheneswa)
- Kuyera kwakafara (0.01–25 m/s), kururama kusvika ±0.5%
- Inogona kuiswa online, kugadzirisa kwakaderera
- Miganhu:
- Zvinokanganiswa nezvinhu zvepaipi (semuenzaniso, simbi inogona kuderedza zviratidzo) uye kufanana kwemvura
- Kuyera kwakanyatsojeka kunoda kuyerera kwakasimba (kudzivirira kusagadzikana)
2.3 Mashandisirwo Akajairika
- Oiri neGasi: Kutarisa mapaipi ari kure
- Masisitimu eHVAC: Kuyerwa kwesimba remvura inotonhorera/inodziyisa
- Kutarisa Zvakatipoteredza: Kuyerwa kwemvura inoyerera murwizi/tsvina (mhando dzinotakurika)
3. Mamita eKuyerera kweGasi
3.1 Mhando Huru uye Zvinhu Zvikuru
| Rudzi | Nheyo | Magasi Akakodzera | Zvakanakira | Miganhu |
|---|---|---|---|---|
| Kupisa Kwemafuta | Kupisa kupisa | Magasi akachena (mhepo, N₂) | Kuyerera kwakananga kwehuwandu, hapana muripo wekupisa/kumanikidzwa | Hazvina kukodzera magasi ane hunyoro/guruva |
| Vortex | Mugwagwa weKármán vortex | Utsi hwemhepo, gasi rechisikigo | Kudzivirira kupisa kwakanyanya/kumanikidzwa | Kunzwa kwakaderera pakuyerera kwakaderera |
| Turbine | Kutenderera kweRotor | Gasi rechisikigo, LPG | Kunyatsorongeka (± 0.5%–± 1%) | Inoda kugadziriswa kwebheyaringi |
| Kumanikidzwa Kwekusiyanisa (Orifice) | Pfungwa yaBernoulli | Magasi emumaindasitiri | Mutengo wakaderera, wakaenzana | Kurasikirwa kwakanyanya kwechigarire (~30%) |
3.2 Mashandisirwo Akajairika
- Chikamu cheSimba: Kutamiswa kwekuchengetedzwa kwegasi rechisikigo
- Kugadzira Semiconductor: Kudzora gasi rakachena zvakanyanya (Ar, H₂)
- Kuongororwa kweKubuda Kwemhepo: Kuyerwa kwemvura inoyerera (SO₂, NOₓ)
4. Gwaro rekuenzanisa nekusarudza
| Paramita | Magineti | Ultrasonic | Gasi (Muenzaniso weThermal) |
|---|---|---|---|
| Midhiya Yakakodzera | Zvinoyerera zvinofambisa mhepo | Mvura/magasi | Magasi |
| Kururama | ± 0.2%–0.5% | ± 0.5%–1% | ±1%–2% |
| Kurasikirwa Nekumanikidzwa | Hapana | Hapana | Zvishoma |
| Kuiswa | Pombi yakazara, pasi | Zvinoda kumhanya kwakatwasuka | Dzivisa kudedera |
| Mutengo | Pakati nepakati-yakakwirira | Pakati nepakati-yakakwirira | Yakaderera-yepakati |
Maitiro Ekusarudza:
- Kuyerwa kwemvura: Magetsi emagetsi emvura inofambisa mvura; ultrasonic yemidziyo isingafambise mvura/inoparadza.
- Kuyerwa kweGasi: Kupisa kwemagasi akachena; vortex yeutsi; turbine yekufambisa kuchengetedza.
- Zvinodiwa Zvakakosha: Kushandiswa kwehutsanana kunoda magadzirirwo asina nzvimbo; nzvimbo dzinopisa zvakanyanya dzinoda zvinhu zvisingapise kupisa.
5. Mhedziso uye Maitiro Eramangwana
- Mamita ekuyerera kwemagetsi emagetsi ndiwo anonyanya kukosha mumaindasitiri emakemikari/mvura, nekufambira mberi mune ramangwana mukuyera mvura isina kufambisa mvura zvakanyanya (semuenzaniso, mvura yakachena zvakanyanya).
- Mita yekuyerera kwemvura yeUltrasonic iri kukura mukutarisira mvura nesimba nenzira yakangwara nekuda kwezvakanaka zvisingabatanidzi.
- Mamita ekuyerera kwegasi ari kuchinja achienda kukubatanidzwa kwemaparameter akawanda (semuenzaniso, kubhadhariswa kwetembiricha/kumanikidzwa + kuongorora kuumbwa) kuti zvive nyore.
- Seti yakakwana yemaseva nesoftware isina waya module, inotsigira RS485 GPRS /4g/WIFI/LORA/LORAWANKuti uwane rumwe ruzivo nezve flow meter,
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Nguva yekutumira: Nyamavhuvhu-13-2025