Kwimitha yokuhamba kwe-ultrasonic,ukushukuma kwe-zero-pointibhekisa kwimeko apho imitha ibonisa isantya sokuhamba kwamanzi esincinci nokuba umbhobho kufuneka ungabi namanzi.
Le nto ibaluleke kakhuluiimitha zokuhamba kwe-ultrasonic ngexesha lokuhamba, kuba izinga lokuhamba kwamanzi libalwa kumahluko phakathi kwamaxesha okuhamba kwamanzi asezantsi naphezulu. Kwimeko efanelekileyo yokuhamba kwamanzi angaphantsi, amaxesha okuhamba amabini kufuneka alingane. Nangona kunjalo, ngokwesiqhelo, umahluko omncinci unokwenzeka ngenxa yeemeko zokufakelwa, iimeko zolwelo, ukungcangcazela kwemibhobho, umgangatho wesignali, kunye neempazamo zokulinganisa nge-elektroniki.
1. Umbhobho usenokungabikho kwiZero Flow
Into yokuqala ekufuneka uyijonge kukuba ingaba umbhobho awukho manzi ngokwenene na.
Kusenokubakho ukuhamba okuncinci ngenxa yezi zinto zilandelayo:
- Ukuvuza kwevalvu
- Umahluko woxinzelelo phakathi kwamacandelo amabini enkqubo
- Ukujikeleza kwendalo
- Ukuhanjiswa kobushushu kwiinkqubo zamanzi ashushu
- Ukuhamba kwe-bypass
- Ukujikeleza kwegazi okubangelwa yimpompo
- Ukuhamba kwentsalela emva kokuba ipompo iyekile
Umzekelo, imitha yokuhamba kwamanzi ingabonisa0.05 m/semva kokuba ipompo icinyiwe. Oku akuthethi ukuba imitha yokuhamba kwamanzi inengxaki ye-zero-point. Kusenokubakho ulwelo oluncinci oluhamba ngepayipi.
Ngoko ke,Ukulinganiswa kwe-zero-point kufuneka kwenziwe kuphela emva kokuqinisekisa ukuba umbhobho awumi ngokupheleleyo kwaye uzaliswe ngokupheleleyo lulwelo.
2. Ukufakelwa kweTransducer engafanelekanga
Kwimitha yokuhamba kwe-ultrasonic ebanjiweyo, ukufakwa kwe-transducer kunempembelelo enkulu kuzinzo lokulinganisa.
Iingxaki zinokwenzeka ukuba:
- Iitransducer azilungelelaniswanga kakuhle.
- Isithuba se-transducer asichanekanga.
- Ezi transducers zimbini zineemeko ezahlukeneyo zokudibanisa.
- Iitransducers zifakelwe kwi-engile engalunganga.
- Umphezulu wokufakelwa ungcolisiwe okanye awulingani.
- Imo yokufakela ekhethiweyo ayihambelani neemeko zombhobho zokwenyani.
Ezi ngxaki zinokubangela ukuba imiqondiso ye-acoustic ephuma phezulu nasezantsi iziphatha ngendlela eyahlukileyo.
Ngenxa yoko, imitha yokuhamba kwamanzi inokubona umahluko omncinci obonakalayo wexesha lokuhamba kwamanzi nokuba akukho mlambo ukhoyo ngokwenene.
3. Ukungcangcazela kwePipe kunokubangela uphawu olubonakalayo lokuhamba kwamanzi
Ukungcangcazela koomatshini yenye into enokubangela ukuba kungabikho kungazinzi.
Ukuba imitha yokuhamba kwamanzi ifakwe kufutshane:
- Iimpompo
- Iicompressor
- Iimoto ezinkulu
- Iivalvu
- Ezinye izixhobo ezingcangcazelayo
ukungcangcazela kunokuchaphazela ukudibana phakathi kwe-transducer kunye nodonga lombhobho.
Ingangenisa ingxolo kwisignali ye-ultrasound efunyenweyo.
Uphawu oluqhelekileyo kukuba izinga lokuhamba kwamanzi elibonisiweyo alihlali likwi-zero ezinzileyo, kodwa endaweni yoko liyaguquguquka malunga ne-zero, umzekelo:
0 → 0.03 → -0.02 → 0.05 → 0 m/s
Kule meko, ukulungisa ngokuphindaphindiweyo inqaku elingu-zero kusenokungayisombululi ingxaki esisiseko. Indawo yokufaka kufuneka iphandwe kuqala.
4. Amaqamza omoya anokuchaphazela uphawu lwe-ultrasonic
Amaqamza omoya yenye yezona zinto zixhaphakileyo zokulinganisa i-ultrasound engaguqukiyo.
Ngenxa yokuba iipropati ze-acoustic zegesi kunye nolwelo zahlukile kakhulu, amaqamza anokusasaza aze anciphise isignali ye-ultrasonic njengoko ihamba ngepayipi.
Oku kunokubangela oku:
- Amandla esignali anciphileyo
- Umgangatho wesignali ongaqinisekanga
- Ukufunyanwa kwexesha lokuhamba elingachanekanga
- Ukufundwa kokuhamba kwamanzi okuhambayo ngamaxesha athile
- Ukufundwa kwe-zero-point okuguqukayo
Yingakho umbhobho kufanele ukuba ubeizaliswe ngokupheleleyo lulwelo, kwaye ii-transducers akufuneki zifakwe kwiindawo apho umoya uqokelelana khona.
5. Utshintsho kubushushu bolwelo
Utshintsho lobushushu lunokuchaphazela uzinzo lwe-zero-point.
Utshintsho kubushushu lutshintsha ulwelo:
- Isantya sesandi
- Uxinano
- Ukuqaqamba
Kwangaxeshanye, ukwandiswa kobushushu kunokutshintsha kancinci ubukhulu bombhobho kunye nendlela ye-acoustic.
Nangona indlela yexesha lokuhamba ixhomekeke kakhulu kumahluko phakathi kwamaxesha okuhamba angasentla nasezantsi kunokukhawuleza kwesandi ngokupheleleyo, utshintsho olukhulu kwiimeko zokusebenza lusenokuchaphazela umgangatho wesignali kunye nokuzinza komlinganiselo.
Oku kubaluleke kakhulu xa kusetyenziswa amanzi ashushu, amanzi okupholisa, kunye nezinye izinto ezimanzi ezinotshintsho olukhulu kubushushu.
6. Iimpazamo ze-elektroniki kunye ne-Signal-processing
Umahluko wexesha lokuhamba olinganiswa yi-ultrasonic flow meter unokuba mncinci kakhulu, ingakumbi xa isantya sokuhamba kwamanzi siphantsi.
Ngoko ke, inkqubo yokulinganisa kufuneka imisele ngokuchanekileyo umahluko omncinci kakhulu kwixesha lokuhamba kwe-ultrasonic.
Izinto ezifana nezi:
- Ingxolo ye-elektroniki
- Uzinzo lwewotshi
- Ukufunyanwa kwesignali
- Imiphumo yobushushu kwizinto ze-elektroniki
- Ii-algorithms zokucubungula isignali
- Uzinzo lwesekethe yokudlulisa
inokuchaphazela umlinganiselo kufutshane nendawo yokuphuma komoya ongekho nzulu.
Esi sesinye sezizathu zokuba ukusebenza kwe-ultrasonic flow meter kuxhomekeke kungekuphela nje kwii-transducers zayo, kodwa nakwimigangatho yazo.inkqubo yokucubungula isignali kunye nokulinganisa ixesha.
7. Kutheni iZero Calibration ingeyona iSombululo esiLungileyo?
Impazamo eqhelekileyo kukwenza ngoko nangoko umlinganiselo wokulinganisa u-zero nanini na xa imitha yokuhamba ibonisa ukuhamba okuncinci kwiimeko zokungena u-zero.
Masithi ukuhamba kokwenyani kungu-zero, kodwa imitha ibonisa rhoqo:
+0.08 m/s
Ukulinganiswa kwe-zero kunokunciphisa ngempumelelo ixabiso elibonisiweyo libe malunga ne-zero.
Nangona kunjalo, ukuba unobangela wokwenyani ngamaqamza omoya, ukungcangcazela, ukungalingani kwe-transducer, okanye ukuvuza kwevalvu, impazamo isenokungabi njalo.
Umzekelo, ukufundwa kunokutshintsha ukusuka ku:
+0.08 m/s → -0.03 m/s → +0.05 m/s
Kule meko, akukho kulungiswa kwe-zero okungenakuyiphelisa ingxaki esisiseko.
Ulandelelwano olungcono lokusombulula iingxaki zezi:
Qinisekisa ukuba akukho manzi aphumayo → Jonga imeko yombhobho → Jonga ukufakwa kwe-transducer → Jonga amandla esignali → Jonga ukuba akukho maqamza omoya kunye nokungcangcazela → Jonga iimeko zobushushu → Yenza uhlengahlengiso lwe-zero ukuba kuyimfuneko
8. Indlela Yokwahlula Iintlobo Ezahlukeneyo Zeengxaki Ze-Zero-Point
| Indlela yokuziphatha kweMitha yoMsinga | Unobangela onokwenzeka |
|---|---|
| Ukuhamba okuncinci okuhle okuzinzileyo | Ukuhamba okuphantsi kokwenyani, i-offset yofakelo, okanye impazamo ye-zero-point |
| Ukuhamba komoya okutshintsha kancinci kufutshane no-zero | Utshintsho lobushushu okanye imeko yesandi |
| Ukutshintshatshintsha okukhawulezileyo malunga no-zero | Amaqamza omoya, ukungcangcazela, okanye isignali engaguqukiyo |
| Ukulahleka ngequbuliso kozinzo olungenanto | Utshintsho kwi-transducer coupling okanye kwimeko yombhobho |
| Uzinzo oluzinzileyo emva kokulinganiswa kodwa luyaphinda lubuyele emva kwexesha | Ingxaki yokufaka okanye yenkqubo esisiseko |
Ukushukuma kwe-Zero-point kwi-ultrasonic flow meterayibangelwa yi-electronic zero point ngokwayo.
Kwizicelo ezininzi zehlabathi lokwenyani, oko kubonakala ngathi kukushukuma kwe-zero-point ngokwenene kubangelwa kukudibana kwezintoukuhamba okuphantsi kokwenyani, ukufakelwa kwe-transducer, ukungcangcazela kwepayipi, amaqamza omoya, utshintsho lobushushu, umgangatho wesignali, kunye nokuzinza komlinganiselo we-elektroniki.
Ngoko ke, indlela echanekileyo ayikokulungisa nje inqaku elingu-zero. Injineli kufuneka iqale ichonge ukuba ingxaki ivela kwi-umbhobho, ulwelo, ukufakelwa, isignali ye-acoustic, okanye izixhobo ze-elektroniki.
Kwimitha yokuhamba kwe-ultrasonic ebanjiweyo, jongaAmandla esignali, uzinzo lwesignali, isithuba se-transducer, imeko yombhobho, kunye nomgangatho wokudibanisakubaluleke kakhulu ngaphambi kokuba kwenziwe uhlengahlengiso olungenalo.
Ixesha lokuthumela: Agasti-17-2026