Iimpawu ze-Open – Channel Flowmeter kwi-Weir okanye kwi-Flume

1. Umlinganiselo ochanekileyo wokuhamba kwamanzi​

• Kwitanki ye-weir, ii-flowmeters ze-open-channel zenzelwe ukulinganisa isantya sokuhamba kwamanzi ngokuchanekileyo okuphezulu. Zihlala zisebenzisa umgaqo wokulinganisa intloko (inqanaba lamanzi) ngaphezulu kwesakhiwo esithile se-weir okanye i-flume. Umzekelo, kwi-weir ye-V-notch, ubudlelwane phakathi kwenqanaba lamanzi kunye nesantya sokuhamba bulandela ifomula yezibalo echazwe kakuhle. Ngokulinganisa ngokuchanekileyo inqanaba lamanzi, i-flowmeter inokubala isantya sokuhamba ngokuchanekileyo. Ukuchaneka kungaba ngaphakathi kwamanqaku ambalwa eepesenti, nto leyo ibalulekileyo kwizicelo ezifana nolawulo lwemithombo yamanzi, apho idatha echanekileyo yokuhamba kwamanzi iyimfuneko ukuze kwabelwe kwaye kubekwe esweni amanzi ngokufanelekileyo.​

2. Ukufaneleka kwiintlobo ezahlukeneyo zeWeir kunye neFlume​

• Ii-flowmeters ze-Open-channel zilungelelaniswa kakhulu neentlobo ezahlukeneyo zee-weirs kunye nee-flumes. Nokuba yi-weir engunxantathu, i-weir engunxantathu, okanye i-Parshall flume, i-flowmeter inokulungiswa ukuba isebenze ngokufanelekileyo. Iintlobo ezahlukeneyo ze-weir kunye ne-flume zineempawu zazo ze-hydraulic, kwaye i-flowmeter ye-open-channel inokulinganiswa kwaye icwangciswe ukuze iqwalasele la mahluko. Umzekelo, i-Parshall flume idla ngokusetyenziswa kwiimeko apho isantya sokuhamba kufuneka silinganiswe kuluhlu olubanzi. I-flowmeter ye-open-channel inokulungiswa ukuze ilinganise ngokuchanekileyo ukuhamba nge-Parshall flume, nokuba ukuhamba kukwizinga eliphantsi okanye eliphezulu.​

3. Ufakelo Olungenakuphazamisa​

• Ukufakwa kwee-flowmeters ezivulekileyo kwiitanki ze-weir kudla ngokungaphazamisi. Uninzi lwezi flowmeters zisebenzisa ii-sensors ezifakwe ngaphezulu okanye ecaleni kwe-weir okanye i-flume, ngaphandle kwesidingo sokuphazamisa ukuhamba kwamanzi. Umzekelo, ii-ultrasound level sensors zihlala zisetyenziswa. Zifakelwa ngaphezulu komphezulu wamanzi kwi-weir tank kwaye zilinganisa umgama kumphezulu wamanzi. Le ndlela yokufaka engaphazamisiyo inciphisa impembelelo yokuhamba kwamanzi okuqhelekileyo kwi-weir tank, kwaye ikwayenza lula inkqubo yokufaka. Akukho mfuneko yokumisa ukuhamba kwamanzi ngexesha lokufakelwa, okulunge kakhulu kwiinkqubo zokusebenza eziqhubekayo ezifana nezityalo zonyango lwamanzi amdaka.​

4. Ukuthembeka kwiindawo ezinzima​

• Iitanki ze-Weir zihlala zifumaneka kwiindawo zangaphandle okanye zoshishino apho iimeko zinokuba nzima khona. Ii-flowmeters ze-Open-channel zenzelwe ukuba zithembeke kwiindawo ezinjalo. Zihlala zenziwe ngezinto ezihlala ixesha elide ezinokumelana nokuchatshazelwa ngamanzi, ukufuma, kunye nokutshintsha kobushushu. Ukongeza, ii-sensors ezisetyenziswa kwezi flowmeters zihlala zikhuselekile ekuphazamisekeni kwezinto zangaphandle ezifana namacandelo e-electromagnetic. Umzekelo, kwisityalo sokucoca amanzi amdaka, apho kunokubakho izixhobo ezininzi zombane ezisebenza kufutshane, i-flowmeter ye-open-channel isasebenza ngokuzinzileyo nangokuchanekileyo ukulinganisa ukuhamba kwamanzi amdaka kwi-weir tank.​

5. Ukubeka esweni okukude kunye nokudluliselwa kwedatha​

• Iimitha zokuhamba kwamanzi ezivulekileyo zanamhlanje kwiitanki ze-weir zixhotyiswe ngamandla okujonga kude kunye nokudlulisela idatha. Zinokuqhagamshelwa kwinkqubo yolawulo ephakathi ngeendlela zonxibelelwano olunentambo okanye olungenazingcingo. Oku kuvumela abaqhubi ukuba bajonge izinga lokuhamba kwamanzi kwitanki ye-weir ngexesha langempela ukusuka kwindawo ekude. Umzekelo, kwinkqubo yokunkcenkceshela enkulu eneetanki ze-weir ezininzi ezisasazwe kwindawo ebanzi, idatha yokuhamba kwamanzi evela kwimitha yokuhamba kwamanzi nganye evulekileyo inokudluliselwa kwigumbi lolawulo eliphakathi. Abaqhubi banokuhlalutya idatha, benze uhlengahlengiso kwinkqubo yokusasazwa kwamanzi njengoko kufuneka, kwaye baqinisekise ukusetyenziswa kwamanzi ngokufanelekileyo.