Umbhobho ovaliweyoiimitha zokuhambazisetyenziswa kakhulu ekuthuthweni kolwelo oluxinzelelweyo oluvaliweyo, ngelixa ii-flowmeters zetshaneli evulekileyo zenzelwe ngokukodwa ukulinganisa ukuhamba kwamanzi angaphezulu angenaxinzelelo. Amanzi ahamba phantsi komxhuzulane kwiitshaneli ezivulekileyo ezifana nemilambo, imisele yokukhupha amanzi, imisele yamanzi amdaka yefektri kunye nemibhobho yamanzi amdaka kamasipala ngaphandle kokuzaliswa ngokupheleleyo kwemibhobho, okwenza indawo yokulinganisa eyahlukileyo apho iimitha zepayipi ze-electromagnetic okanye ze-ultrasonic zingenakuziqhelanisa nazo. Ii-flowmeters zetshaneli evulekileyo zidibanisa ukufunyanwa kwenqanaba lokuhamba kwamanzi kunye nee-flumes okanye ii-weirs eziqhelekileyo ukubala ukuhamba komthamo, zibonelela ngexabiso eliphantsi, ukusebenza okuzinzileyo kunye nokuziqhelanisa ngokubanzi, kwaye ziye zaba zizixhobo zokujonga eziqhelekileyo zokhuseleko lokusingqongileyo, amanzi amdaka kamasipala, ukunkcenkceshela kunye neeprojekthi zokukhupha amanzi kwimizi-mveliso kwihlabathi liphela.
Umgaqo oyintloko wokulinganisaii-flowmeters zetshaneli evulekileyoisekelwe kubudlelwane be-hydraulic phakathi kwenqanaba lamanzi kunye nesantya sokuhamba kwamanzi. Ngokweefomyula ze-hydraulics, umthamo wokuhamba kwamanzi kwicandelo le-channel evulekileyo ezinzileyo umiselwa ngokukodwa bukuphakama kwenqanaba lolwelo. Uninzi lweenkqubo ezipheleleyo ziqulathe iindawo ezimbini eziphambili: i-level sensor kunye ne-flow calculation transmitter. Ii-Ultrasonic level probes zezona ziqhelekileyo. Zifakwe ngokuthe nkqo ngaphezulu komphezulu wamanzi, zikhupha amaza esandi ukulinganisa umgama wexesha langempela ukuya emanzini, emva koko ziguqula umgama ube yidatha echanekileyo yobunzulu bamanzi. Iifomyula ze-hydraulic ezakhelwe ngaphakathi ze-Parshall flumes, ii-rectangular weirs kunye nee-triangular V-notched weirs zigcinwa kwi-transmitter. Emva kokudibanisa iiparameter zesakhiwo se-channel, isixhobo sibala ngokuzenzekelayo ukuhamba ngokukhawuleza kwaye siqokelela umthamo wokuhamba kwamanzi uwonke. Ezinye iimodeli eziphambili zisebenzisa ii-contactless contact level sensors, ezisebenza ngcono kwiindawo ezinzima ezinomphunga wamanzi omninzi, i-foam okanye i-floating sludge kumphezulu wamanzi.
Xa kuthelekiswa nezixhobo zokuhamba kwepayipi, ii-flowmeters zetshaneli evulekileyo zinezibonelelo ezikhethekileyo ezifanelekileyo kwiimeko zokukhupha amanzi. Okokuqala, azifuni kudibana nesixhobo esilinganisiweyo. Ii-ultrasound kunye nee-radar sensors zifakelwe ngaphezulu kwetshaneli, ziphepha ukugqwala, ukwakheka kunye nokuvaleka okubangelwa yi-sediment, iifayibha, iintsalela zeekhemikhali kumjelo wamanzi amdaka. Akukho zixhobo zishukumayo ezimanzi, ngoko ke iindleko zokugcinwa kunye nokutshintshwa ziyancipha kakhulu. Okwesibini, zenza ukuba kungabikho ukuxhathisa ukuhamba kwamanzi kwaye akukho lahleko yoxinzelelo. Ngokungafaniyo neemitha zepayipi ezithatha indawo yombhobho kwaye zithintele ukuhamba kolwelo, izakhiwo zokulinganisa umjelo ovulekileyo aziphazamisi isantya sokuqala sokukhupha amanzi, nto leyo ibalulekileyo kwiinethiwekhi ezinkulu zokukhupha amanzi amdaka zasezidolophini ezingenakuthwala ukuvaleka kokuhamba kwamanzi. Ukongeza, izixhobo zinoluhlu olubanzi lokulinganisa, olukwaziyo ukubamba ukuhamba kwamanzi okuncinci okuphantsi kwiiyure ezingezizo ezokukhawuleza kunye nokuphuma kwamanzi amaninzi ngexesha lokuveliswa kwefektri okanye iimvula ezinkulu.
Iimitha zokuhamba kwamanzi ezivulekileyo zigubungela amacandelo amathathu amakhulu okusetyenziswa. Ukhuseleko lokusingqongileyo lukamasipala yeyona marike inkulu. Izityalo zonyango lwelindle zasezidolophini zizifaka kwimisele yokungena kunye neyokuphuma ukuze zijonge ukukhutshwa kwamanzi amdaka ngokupheleleyo, zibonelela ngedatha esemthethweni yokujonga imeko-bume kunye nezibalo zokukhutshwa kokungcola. Amanzi emvula asezidolophini kunye nemijelo yokungcola edibeneyo ikwasebenzisa ezi mitha ukuze yahlule idatha yokuhamba kwamanzi emvula kunye nelindle ukuze kuphuculwe ukusebenza kwenethiwekhi yemibhobho. Okwesibini, imijelo yokuhambisa amanzi kwimizi-mveliso iyayisebenzisa kakhulu le mishini. Amashishini elaphu, amachiza, ukutya kunye nemigodi akhupha amanzi amdaka ngemisele evulekileyo; iimitha zokuhambisa amanzi ezivulekileyo zilandelela umthamo wokuhambisa amanzi ukuze kulawulwe ukusetyenziswa kwamanzi okuveliswa kunye nokuqinisekisa ukuthotyelwa kwemida yokukhupha amanzi. Okwesithathu, ukugcinwa kwamanzi ezolimo kuxhomekeke kakhulu ekulinganisweni kwemijelo evulekileyo. Imijelo yokunkcenkceshela yasefama, imijelo yokuguqula amanzi kunye nemijelo yokusasaza amanzi isebenzisa iimitha zokuhamba kwamanzi ezivulekileyo zohlobo lweflume ukubala ukusetyenziswa kwamanzi okunkcenkceshela, ukuxhasa ukwabiwa kwemithombo yamanzi ngokufanelekileyo kunye nolawulo lokulondolozwa kwamanzi ezolimo.
Itshaneli evulekileyo yanamhlanje ekrelekreleii-flowmeterszixhotyiswe ngemisebenzi epheleleyo yonxibelelwano lwedijithali. Imveliso eqhelekileyo ye-RS485 Modbus-RTU ivumela uqhagamshelo kwi-PLC, iikhabhathi zolawulo lwemizi-mveliso kunye namaqonga okujonga okusingqongileyo akude. Ii-data loggers ezakhelwe ngaphakathi zigcina iirekhodi zokuhamba kwembali, kwaye ii-alamu ezigqithisileyo ziqala ngokuzenzekelayo xa kuvela ukukhupha amanzi okungaqhelekanga, njengokuvuza okungcolisayo kwemizi-mveliso ngequbuliso. Lonke iseti yezixhobo isebenza ngokuzinzileyo phantsi kobushushu obubanzi kwaye inokuqhelana nokufakelwa komoya ovulekileyo ngaphandle kunye noyilo lwezindlu ezingangeni manzi nothuli.
Ukushwankathela, ii-flowmeters zetshaneli evulekileyo zizalisa isithuba somlinganiselo womxhuzulane ongacinezelwanga ongenakugutyungelwa ziimitha zemibhobho zemveli. Ngomlinganiselo ongadibaniyo, iindleko eziphantsi zokugcinwa kunye nokuguquguquka okuqinileyo kokusingqongileyo, zidlala indima engenakutshintshwa ekujongeni amdaka, ukuhambisa amanzi kwimizi-mveliso kunye nokunkcenkceshela ngolondolozo lwamanzi. Njengoko ulawulo lwemithombo yamanzi kwihlabathi liphela kunye nokujonga ukukhutshwa komoya ongcolileyo lusiya luqina, iinkqubo zokulinganisa ukuhamba kwamanzi ezikrelekrele ziya kuqhubeka nokwandisa isabelo sazo semarike njengeziseko ezingundoqo zokujonga okusingqongileyo kwamanzi.
Ixesha lokuthumela: Julayi-10-2026