Imfuneko yombhobho othe tye “we-10D upstream kunye ne-5D downstream” ayingomthetho opheleleyo wee-clamp-on ultrasonic flowmeters, kodwa sisikhokelo esiqhelekileyo sokuqinisekisa ukuchaneka kokulinganisa okufanelekileyo. Ubude bombhobho othe tye obufunekayo buxhomekeke kwizinto ezifana nohlobo lokuphazamiseka kokuhamba kwamanzi, umgaqo wokulinganisa (umahluko wexesha vs. Doppler), kunye neemfuno zokuchaneka kwesicelo.
1. Kutheni kucetyiswa ukuba kusetyenziswe i-“10D Upstream kunye ne-5D Downstream”?
Ii-ultrasonic flowmeters zibala isantya sokuhamba ngokusekwe kwixesha lokusasazeka (indlela yokwahluka kwexesha) okanye ukutshintsha kwamaza (indlela yeDoppler) yamaza e-ultrasonic kulwelo. Oku kuxhomekeke ekuhambeni okuzinzileyo nokuphuhlileyo ngokupheleleyo (ngokufanelekileyo, iprofayili yesantya esilinganayo kulo lonke icandelo elinqamlezileyo lombhobho).
Izinto ezifakelwayo ezifana neengqiniba, ii-tee, iivalvu, okanye izixhobo zokunciphisa umbane ziphazamisa iprofayili yokuhamba kwamanzi (edala ii-swirls, ii-eddies, okanye ukusasazwa kwesantya esingalinganiyo), nto leyo enokubangela iimpazamo zokulinganisa. Isikhokelo se-"10D upstream + 5D downstream" sinika indawo eyaneleyo yokuhamba kwamanzi okuphazamisekileyo ukuze kuzinze kwakhona ngaphambi kokuba kungene kwicandelo lokulinganisa lemitha.
2. Uhlengahlengiso Oluguquguqukayo: Xa i-“10D/5D” Inokuphumzwa Okanye Kufuneka Ilandelwe Ngokungqongqo?
Ubude bombhobho othe tye obufunekayo buyahluka ngokweemeko ezithile, njengoko kubonisiwe kwitheyibhile engezantsi:
| Imeko | Ubude bePipe Ethe Tye Efunekayo | Ingqiqo |
|---|---|---|
| Ukuphazamiseka kokuhamba kwamanzi okuncinci (umz., iingqiniba ezinde ezingama-90°, iivalvu zesango ezivuleke ngokupheleleyo) | Phezulu: 5D–8D Ezantsi: 3D–5D | Ukuphazamiseka okuncinci kuyaphela ngokukhawuleza; imibhobho emifutshane ethe tye yanele ukuzinzisa ukuhamba kwamanzi. |
| Ukuphazamiseka okukhulu kokuhamba kwamanzi (umz., iingqiniba ezimfutshane ezingama-90°, iivalvu zeglobe, ii-tee) | Phezulu: ≥10D Ezantsi: ≥5D | Ukujika/ukujika okukhulu kufuna imigama emide ukuze kuphuhliswe kwakhona kube kukuhamba okuzinzileyo. |
| Izicelo ezichanekileyo kancinci (umz., ukubeka esweni inkqubo ngokubanzi, ukulandelwa kokuhamba komoya okungabalulekanga kangako) | Phezulu: 3D–5D Ezantsi: 2D–3D | Ukunyamezela iimpazamo ezincinci (±3%–±5%) kuvumela ukuguquguquka okungakumbi. |
| Izicelo ezichanekileyo kakhulu (umz., isivumelwano sorhwebo, ukulinganisa amandla, ukulinganisa amayeza) | Phezulu: 10D–15D Ezantsi: 5D–8D | Iimfuno zokuchaneka okungqongqo (±1%–±2%) zifuna iimeko zokuhamba kwamanzi ezikufutshane nefanelekileyo. |
| Iimitha zokucinezela zohlobo lwe-Doppler | Iguquguquka kancinci (umz., i-5D–8D ephezulu) | Iimitha zeDoppler azinangxaki kangako nokungalingani kweprofayili yokuhamba kwamanzi okuncinci kuneemitha zomahluko wexesha. |
3. Izisombululo Xa Ubude Bepayipi Ethe Tye Bbunganelanga
Ukuba indawo yombhobho incinci kwaye i-"10D/5D" ayinakufezekiswa, la manyathelo alandelayo anokunciphisa ukuphazamiseka kokuhamba kwamanzi kwaye aphucule ukuchaneka:
- Faka izinto zokupholisa ukuhamba kwamanzi: Izixhobo ezifana neetyhubhu, iihoneycombs, okanye iipleyiti ze-orifice zinokulungisa ukuhamba kwamanzi okuphazamisekileyo kumgama omfutshane (ukunciphisa umbhobho othe tye ofunekayo ukuya kwi-3D–5D).
- Lungiselela indawo yokufaka i-sensor: Kuphephe ukufaka ii-sensor ngqo ngezantsi xa kukho ukuphazamiseka; ukuba kunokwenzeka, zibeke phezulu kweengqiniba/iivalvu (ukuphazamiseka okuphezulu akunampembelelo ingako kunezo zisezantsi).
- Lungisa isithuba/i-engile yenzwa: Ezinye iimitha ezikwi-clamp-on eziphucukileyo zivumela ukulungiswa kakuhle komgama we-transducer okanye i-engile ye-beam ukuze kulungiswe ukungalungi okuncinci kweprofayili yokuhamba kwamanzi.
- Sebenzisa ii-sensors ezineendlela ezininzi: iimitha ze-clamp-on ezineendlela ezimbini okanye ezine zilinganisa isantya kwiindawo ezininzi kulo lonke icandelo lombhobho, zilinganise ukungalingani kweprofayili yokuhamba kwamanzi okubangelwa kukungabikho kombhobho othe tye.
Isiphelo
Nangona i-"10D upstream kunye ne-5D downstream" isisiseko esikhuselekileyo kwiimeko ezininzi zoshishino, ii-clamp-on ultrasonic flowmeters azifuni ubude obunjalo kuzo zonke iimeko. Isitshixo kukufanisa ubude bombhobho othe tye kunye nenqanaba lokuphazamiseka kokuhamba kunye neemfuno zokuchaneka kwesicelo. Xa indawo incinci, ii-flow conditioners okanye ii-multi-path sensors zinokubuyisela ngempumelelo umbhobho othe tye onganeleyo, ukuqinisekisa ukusebenza okuthembekileyo kokulinganisa.
Ixesha leposi: Sep-04-2025