Miyero yekuyerera kwemvura (flow meters) inoshandiswa zvakanyanya mumaindasitiri kuyera kuyerera kwemvura dzakadai semvura, magasi, uye utsi. Munguva yekuyera, mvura yacho inowanzosangana nekusagadzikana painopfuura nemuyero yekuyerera kwemvura, zvichikonzera kudzikira kwedzvinyiriro. Chiitiko ichi chinozivikanwa sekurasikirwa nekumanikidzwaKukura kwekurasikirwa nedzvinyiriro hakungokanganisi kururama kwekuyera chete asiwo kunokanganisa kushandiswa kwesimba remagetsi uye mari yekushandisa. Chinyorwa chino chichatsanangura kuti chii chinonzi flow meter pressure loss, ndeapi flow meter ane pressure loss yakakura, ndeapi ane low, uye masarudzo e flow meter chaiyo.
1. Chii chinonzi Flow Meter Pressure Loss?
Kurasikirwa kwe flow meter pressure zvinoreva kudzikira kwe fluid pressure kunokonzerwa nezvinhu zvemukati zve flow meter, zvakaita sekukombama mupaipi, kukwenya mu orifices, nezvimwe zvinhu zvinodzivisa. Flow meter yega yega ine dhizaini yakasiyana, uye nekuda kweizvozvo, flow meter dzakasiyana dzinopa mwero wakasiyana we resistance ku fluid flow, zvichikonzera mazinga akasiyana ekurasikirwa kwe pressure.
Zvikonzero zvikuru zvekurasikirwa kwe flow meter pressure zvinosanganisira:
- Kuchinja kwenzira yekuyerera kwemvura (senge kusimba kwemukati, kukotama, nezvimwewo)
- Kukakavadzana kubva kuzvinhu zvemukati (zvakadai sematurbine, masensa)
- Kuchinja kwekufamba kwemvura
- Kurasikirwa nekumanikidzwa kwenzvimbo muzvikamu zvemukati zvemuchina wekuyeresa kuyerera kwemvura
Kana kumanikidzwa kwakanyanya mu flow meter, simba rakawanda rinorasika sezvo flow meter ichiyerera mairi, izvo zvinogona kukonzera kushandiswa kwesimba rakawanda uye kutokanganisa kugadzikana kwe flow flow.
2. Ndeapi Ma Flow Meters Ane Kurasikirwa Kwakanyanya Kwekumanikidzwa?
Mamwe ma flow meters anokonzera kurasikirwa kwakanyanya kwedzvinyiriro nekuda kwekushanda kwawo uye magadzirirwo awo. Heano mashoma ema flow meters anowanzo kukonzera kurasikirwa kwakanyanya kwedzvinyiriro:
Mamita Ekuyerera kweTurbine
Mita dzemagetsi dzinoyera kuyerera kwemvura kuburikidza nekutenderera kwe turbine inofambiswa nemvura. Kukweshana pakati pe turbine nemvura, pamwe nekuchinja kwenzira yekuyerera kwemvura, zvinoita kuti pave nekurasikirwa kwakanyanya kwesimba. Mita dzemagetsi dzinowanzova nekurasikirwa kukuru kwesimba, kunyanya kana mvura yaderera. Mita idzi dzakakodzera kushandiswa kwemvura iri pakati nepakati kusvika pakakwirira asi hadzina kukodzera mamiriro ezvinhu anoda kunyatsojeka kana kuyerera kwakaderera.
Mamita Ekuyerera kwePlati yeOrifice
Miyero yekuyerera kweOrifice plate inoyera kuyerera kwemvura nekuchinja kwespeed kana mvura ichipfuura nepaburi diki. Musiyano wekumanikidzwa usati wasvika uye mushure meorifice unoguma nekurasikirwa kukuru kwedzvinyiriro. Kurasikirwa kwekumanikidzwa kwakanyanya kana paine mwero mukuru wekuyerera kwemvura. Miyero yekuyerera kweOrifice plate inowanzo shandiswa pamapaipi makuru uye mashandisirwo ekuyerera kwemvura yakawanda, asi haina kukodzera mamiriro ezvinhu apo kurasikirwa kwekumanikidzwa kwakaderera kwakakosha.
Mamita eVenturi Tube Anoyerera
Mamita ekuyerera kwechubhu yeVenturi anoyera kuyerera kwemvura nekuchinja kwekukurumidza kunoitika kana mvura inopfuura nepakati pepombi iri kutetepa. Kunyangwe dhizaini yechubhu yeVenturi yakagadziriswa kuti ideredze kuderedzwa kwekumanikidzwa, ichiri kukonzera kurasikirwa kukuru kwekumanikidzwa, kunyanya kana mvura ichimhanya zvakanyanya. Kunyange ichipa zviyero zvakarurama, haina kunaka kune masisitimu ane zvinodiwa zvakanyanya zvekurasikirwa nekumanikidzwa.
3. Ndeapi Mamita Ekufamba Ane Kurasikirwa Kwekumanikidzwa Kwakaderera?
Mamwe ma flow meters akagadzirwa nemaumbirwo ari nyore anoderedza kuramba kwemvura, zvichikonzera kurasikirwa kushoma kwe pressure. Heano mamwe ma flow meters ane pressure loss yakaderera:
Mamita Ekuyerera kweUltrasonic
Mamita ekuyerera kwemvura eUltrasonic anoyera kuyerera kwemvura nekutumira nekugamuchira masaini eUltrasonic. Sezvo pasina zvikamu zvemukati zvinofamba, anokonzera kusapindirana kwemvura. Kurasikirwa kwedzvinyiriro mumamita ekuyerera kwemvura eUltrasonic kwava pedyo ne zero, zvichiita kuti zvive zvakanaka pakushandiswa kunoda kurasikirwa kwakaderera kwedzvinyiriro. Mamita aya anowanzo shandiswa mumapaipi uye haapindire kuyerera kwemvura, uye haasvibisi mvura.
Mamita Ekuyerera kweMagineti
Ma electromagnetic flow meter anoshanda zvichibva pamutemo waFaraday we electromagnetic induction. Haavimbi nehunhu hwemvura uye haana zvikamu zvemakanika. Sezvo mvura ichipfuura nemu electromagnetic flow meter, hairasike zvakanyanya. Ma electromagnetic flow meter aya akakodzera kuyerwa kukuru kwemvura uye kushandiswa kwakanyatsonaka, kunyanya kune conductive liquids.
Mamita eCoriolis Mass Flow
Mita yekuyerera kweCoriolis mass inoyera kuyerera kwemvura nekuona shanduko muhukuru hwemvura, uye dhizaini yavo kazhinji haisanganisire chero zvinhu zvinokanganisa kuyerera kwemvura. Nekuda kweizvozvo, inogadzira kurasikirwa kwemhepo kwakaderera. Yakanyatsokodzera kushandiswa kwakanyatsojeka, uye kunonzwa kuderera kwemhepo sekunge mumaindasitiri emakemikari nemafuta.
Mamita eKuyerera kweThermal Mass
Mamita ekuyerera kwemafuta anodziya (thermal mass flow meters) anoyera kuyerera kwemvura nekuona shanduko mukupisa kwemvura. Mamita aya haawanzogadzira kuramba kwakanyanya kwemvura inoyerera, zvinoreva kuti kurasikirwa kwavo nemhepo kwakaderera. Mamita ekuyerera kwemafuta anodziya (thermal mass flow meters) anowanzo shandiswa pakuyera kuyerera kwemhepo negasi.
4. Ungasarudza Sei Chiyero Chekuyerera Chakakodzera?
Pakusarudza flow meter, pamusoro pezvinhu zvakaita sekururama kwekuyera, mutengo, uye hupenyu hwebasa, kurasikirwa nepressure chinhu chakakosha kufunga nezvacho. Kune masisitimu anoda kuchengetedza mwero wekufamba wakadzikama uye kushandiswa kwesimba shoma, kusarudza flow meter ine low pressure loss kwakakosha.
- Mamita ekuyerera eUltrasonicuyemita dzekuyerera kwemagetsidzakanakira mamiriro ezvinhu anoda kurasikirwa nedzvinyiriro shoma, kunyanya kana mvura ichifanira kupfuura nemupombi pasina kukanganiswa kwakanyanya.
- Mita yekuyerera kweturbineuyemita dzekuyerera kweplate ye orificedzakakodzera kushandiswa kwemvura yakawanda uko kurasikirwa nemhepo kusinganyanyi kukosha, asi kungwarira kunofanira kuitwa mumamiriro ekunze asina kuyerera zvakanyanya nekuda kwekugona kurasikirwa nemhepo yakawanda.
Mhedziso
Kurasikirwa nekumanikidzwa mu flow meter kunokanganisa zvakananga kushanda zvakanaka kwesimba uye kugadzikana kwe fluid system. Pakusarudza flow meter, zvakakosha kufunga nezvehunhu hwe fluid, huwandu hwekuyerera, uye kunzwa kwe system pakurasikirwa nekumanikidzwa. Nekunzwisisa hunhu hwekurasikirwa nekumanikidzwa kwema flow meter akasiyana, unogona kuita sarudzo ine ruzivo rwakawanda yekuvandudza flow meter system yako, kuderedza kushandiswa kwesimba, uye kuvandudza mashandiro.
Nguva yekutumira: Kurume-03-2025