Xa ujonga ukukhutshwa kwamanzi amdaka, unyango lwamanzi amdaka okanye iiprojekthi zokunkcenkceshela, ukukhetha imitha yokuhamba komjelo ovulekileyo efanelekileyo kuqinisekisa ngokuthe ngqo ukuchaneka komlinganiselo, ukuthotyelwa kwemithetho kunye nomsebenzi wolondolozo wexesha elide. Iinjineli ezininzi aziyinaki ingongoma enye ebalulekileyo: akukho mitha yokuhamba komjelo ovulekileyo osebenza ngokugqibeleleyo kuyo yonke indawo. Ukusebenza kwayo kuxhomekeke kakhulu ekubeni ihambelana na nesakhiwo sakho se-weir okanye i-flume hydraulic. Ngoko ke umbuzo ophambili uhlala uhleli: yeyiphi imitha yokuhamba komjelo ovulekileyo efanela imeko ye-weir okanye i-flume channel yakho?
Ii-Weirs kunye nee-flumes zizixhobo eziphambili zokulinganisa ezakha ubudlelwane obuzinzileyo bezibalo phakathi komgangatho wamanzi kunye nesantya sokuhamba kwamanzi. Ii-Weirs, kuquka ii-V-notch triangular weirs kunye nee-rectangular weirs, zenza umqobo kwitshaneli, nto leyo enyanzela amanzi ukuba achitheke phezu kwee-notches ezilinganisiweyo. Ii-V-notch weirs zibonelela ngovakalelo oluhle kakhulu kwiimeko zokugeleza kwamanzi amdaka, ezisetyenziswa kakhulu kwiindawo ezincinci zokukhupha amanzi amdaka kunye neenkqubo zonyango lwe-lab-scale. Nangona kunjalo, ii-weirs zenza amachibi aphezulu apho i-sediment, i-sludge kunye ne-floating debris ziqokelelana ngokulula. Ukucoca rhoqo kuba yimfuneko, kungenjalo iidipozithi ziya kuphazamisa ukufundwa kwamanzi kwaye zivelise idatha yokuhamba kwamanzi engathembekanga.
Iiflume, ezifana neParshall flume edumileyo kwihlabathi liphela, zinciphisa iindawo ezinqamlezileyo zemisele ukuze zikhawulezise ukuhamba ukuya kwisantya esibalulekileyo ngaphakathi kwecandelo lomqala. Ngenxa yesantya sokuhamba ngokukhawuleza, iiflume zinamandla okuzicoca kwaye zimelana nokwakheka kwenkunkuma. Oko kuzenza zibe lolona khetho lukhethwayo lwelindle eluhlaza, ukungcola kwemizi-mveliso kunye nesanti ethwala amanzi okanye amasuntswana aqinileyo. Xa kuthelekiswa nee-weirs, iiflume zivelisa ukulahleka kweentloko ezisezantsi kwaye zinyamezela ukuntywila okuphakathi, kodwa zifuna ukwakhiwa okuchanekileyo kunye nokulungelelaniswa okungqongqo kokufakwa ukuqinisekisa ukuchaneka okulinganisiweyo.
Iimitha zokuhamba ze-ultrasonic ezivulekileyo zetshaneli zanamhlanje zibala umthamo wokuhamba ngokulinganisa ubunzulu bamanzi bexesha langempela kunye nokusebenzisa iifomyula ze-hydraulic ezicwangcisiweyo kwangaphambili kwii-weirs okanye ii-flumes. Nangona kunjalo, ayizizo zonke ii-transmitters ezixhasa ithala leencwadi elipheleleyo lee-weir-flume equations. Ezinye izixhobo ezingabizi kakhulu zibonelela ngeeprofayili zetshaneli ezilinganiselweyo kuphela. Ukuba uqhagamshela imitha ngaphandle kweeparamitha ezakhelwe ngaphakathi ezichanekileyo kwi-Parshall flume okanye kwi-triangular weir, uya kufumana iziphumo zokuhamba ezihambayo ezihambelanayo kodwa ezingalunganga ngokupheleleyo, nokuba ukufundwa kwamanqanaba kubonakala kuqhelekile. Le yingxaki eqhelekileyo ekuthengweni kwentsimi.
Ngaphandle kokuhambelana kweprofayili, kufuneka uvavanye iimeko zokusebenza zangempela kwindawo. Ukuze kukhutshwe amanzi acocekileyo anomxholo oqinileyo ophantsi, imitha yokuhamba ecwangciselwe ii-V notch weirs inokubonelela ngeziphumo zokulinganisa ezizinzileyo nezingabizi kakhulu. Kwilindle likamasipala elinokungcola okukhulu, khetha imitha ehambelana ngokupheleleyo neeseti zedatha zeParshall flume, kwaye uqinisekise ukusebenza kokungaphazanyiswa komphunga, isitshizi samanzi kunye nokuxinana komphezulu kwindawo. Imisebenzi yonxibelelwano nayo ifanelwe ingqalelo. Iziphumo ze-M-Bus, i-Modbus-RTU okanye i-HART zivumela ukulayisha idatha ekude ukuze kuxelwe ukuthobela indalo, kususwe iimpazamo zokurekhoda ngesandla.
Iimfuneko zokufakelwa azinakuze zityeshelwe. Zombini ii-weirs kunye nee-flumes zifuna iindawo ezaneleyo zemijelo ethe tye phezulu nasezantsi ukuze kuzinziswe iipatheni zokuhamba kwamanzi. Kwanemitha yokuhamba kwamanzi evulekileyo esebenza kakhulu iya kuphazamiseka ngokuchanekileyo ukuba umsebenzi wokwakha awuhlangabezani neemfuno. Ababoneleli bezixhobo abathembekileyo banikezela ngamaxwebhu obuchwephesha apheleleyo, bekhokela iinjineli ngesikhundla sokufaka inzwa, ubude obuncinci bemibhobho ethe tye kunye neenkqubo zokulinganisa. Inkxaso ekude ngexesha elifanelekileyo inciphisa ixesha lokungasebenzi kweendawo zikamasipala nezemizi-mveliso.
Isiqinisekiso kufuneka siqwalaselwe nakwiiprojekthi zamazwe ngamazwe. Ukuvunywa kweMetrology kuqinisekisa ukuba idatha yokuhamba elinganisiweyo iyamkeleka kwiingxelo ezisemthethweni zokusingqongileyo. Kuphephe ukukhetha iimitha ezingabizi kakhulu ezingaqinisekiswanga, njengoko ukungaphumeleli kokwamkelwa kweprojekthi kuya kuzisa ilahleko enkulu kakhulu kunokonga izixhobo zokuqala.
Ngamafutshane, ukufanisa imitha yakho yokuhamba komjelo ovulekileyo nesakhiwo sakho se-weir okanye i-flume esikhoyo kungundoqo womlinganiselo wokuhamba okuthembekileyo. Qinisekisa iiprofayili ze-hydraulic ezakhelwe ngaphakathi, iimpawu eziphakathi, imida yokufakela kunye neendawo zonxibelelwano ezifunekayo ngaphambi kokuba uthenge. Ukuba wabelana ngeenkcukacha eziquka uhlobo lwe-weir okanye i-flume, ubungakanani betshaneli, ipropati ephakathi kunye noluhlu lokuhamba, iingcali zobugcisa zinokucebisa isisombululo semitha yokuhamba komjelo ovulekileyo esifanelekileyo kwisicelo sakho setshaneli ethile.
Ixesha leposi: Oktobha-15-2026