Ngaba iipayipi zemizi-mveliso zihlala zijikelezile ngokupheleleyo?

Kwimisebenzi yemizi-mveliso, imibhobho idla ngokucingelwa ukuba ijikeleza ngokugqibeleleyo, kodwa eneneni, oku akusoloko kunjalo. Zininzi izinto ezibangela utshintsho kwimibhobho ejikelezayo, kwaye ukuqonda olu tshintsho kubalulekile ekulinganisweni ngokuchanekileyo kokuhamba kwamanzi, ngakumbi ngeemitha zokuhamba kwamanzi ezisebenzisa i-ultrasonic.

1. Ukunyamezela kweMveliso

Iipayipi zentsimbi ezingenamthungo, ezisetyenziswa kakhulu kwizicelo zoshishino, zenziwa ngeenkqubo zokuzolula ezibandayo okanye ezishushu. Ezi pipes zihlala zinobubanzi obufikelela kwi-DN2000 kwaye zivunyelwe ukuba zibe neqondo elithile le-ovality (ukuphambuka kwi-rounding egqibeleleyo). Iqondo le-rounding linokwahluka ngokuxhomekeke kumgangatho wokwenziwa:

• Abavelisi abakhulu, abaziwayo bentsimbi badla ngokuvelisa imibhobho engqukuva engcono.
• Abavelisi abancinci banokwenza iipayipi ezineenguqu eziphawulekayo.

Umzekelo, eminye imibhobho ye-DN300 inokuba nempazamo enkulu yobubanzi obufikelela kwi-5mm. Ezi meko zokunyamezelana kufuneka ziqwalaselwe xa kuyilwa okanye kulinganiswa imibhobho yezicelo zoshishino.

2. Iipayipi ezidityanisiweyo nezijikelezileyo

Ukongeza kwimibhobho yentsimbi engenamthungo, imibhobho emininzi yokuthutha ulwelo oluphantsi isebenzisa imibhobho edibeneyo okanye edibeneyo ejikelezayo. Le mibhobho idla ngokuba nokuphambuka okuphezulu kwe-ovality xa ithelekiswa nemibhobho engenamthungo, nto leyo eyenza ukuba ingaguquguquki kwimilo yayo. Inkqubo yokudibanisa ngokwayo inokuba negalelo ekuguqulweni kombhobho, ingakumbi kwimibhobho enobubanzi obukhulu.

Iipayipi ezidityanisiweyo nezidityanisiweyo nge-spiral zihlala zibiza kancinci kodwa zinokufuna ingqalelo eyongezelelweyo xa kufuneka imilinganiselo echanekileyo, ingakumbi ngeenjongo zokulinganisa ukuhamba kwamanzi.

Impembelelo ye-Ovality kwi-Clamp-on Ultrasonic Flow Meters

Ngokubaiimitha zokuhamba kwe-ultrasonic ezibanjiweyo, umlinganiselo uphenjelelwa sisignali ye-acoustic edlula kulwelo olungaphakathi kumbhobho. I-sensor ifakwe ngaphandle kombhobho, ngoko ke naluphi na utshintsho kwimilo yombhobho (njengokujika) lunokukhokelela kwiingxaki ezininzi:

• Ukusasazwa kwesiginali okungafanelekanga: Ukuba umbhobho awungqukuvanga ngokugqibeleleyo, umgama phakathi kwesensor kunye nolwelo unokwahluka kumjikelezo wombhobho. Oku kunokubangela ukuba imiqondiso ye-ultrasonic ihambe imigama eyahlukeneyo, nto leyo ephazamisa umlinganiselo.
• Ukungaqiniseki okwandileyo kokulinganisa: Nokuba ukuphambuka okuncinci kwimilo yombhobho kunokubangela iimpazamo ekubalweni kwexesha lokubhabha, nto leyo ekhokelela ekufundweni kokugeleza okungachanekanga.

Kwimeko ye-oval enkulu, i-sensor isenokungakwazi ukugcina unxibelelwano oluhambelanayo nomphezulu wombhobho, nto leyo enciphisa ngakumbi ukuchaneka kokulinganisa.

Impembelelo ye-Ovality kwi-Insertion Ultrasonic Flow Meters

Iimitha zokuhamba ze-ultrasonic zokufaka, ezifakwe ngaphakathi kumbhobho, nazo zihlangabezana nemingeni ngenxa ye-ovality:

• Indawo engalunganga yesenzi: Ukuba umbhobho umile okweqanda, isensa isenokungabekwa kwindawo efanelekileyo ukuze kulinganiswe ngokuchanekileyo. Amaza e-ultrasonic asenokungahambi kumgca othe tye okanye achaphazeleke kukutshintsha kweprofayili yokuhamba kwamanzi, nto leyo ekhokelela kwiimpazamo.
• Ukusasazwa kokuhamba komoya okungalinganiyo: Ukuma kwe-oval kunokukhokelela ekusasazweni kokuhamba komoya okungalinganiyo kwicandelo elinqamlezileyo lombhobho, ingakumbi kwimibhobho enobubanzi obukhulu okanye iimeko zokuhamba okuntsonkothileyo. Oku kunokubangela ukuba isignali ye-ultrasonic ibonakale ngokwahlukileyo kwicandelo elinqamlezileyo, nto leyo ebeka emngciphekweni ukuchaneka komlinganiselo.

Iindlela ezilungileyo zokufakela ngee-Ultrasonic Flow Meters

Ukunciphisa impembelelo ye-ovality ekulinganisweni kokuhamba kwamanzi, kufuneka kuqwalaselwe ezi ndlela zilandelayo zilungileyo:

• Khetha icandelo lombhobho eline-oval encinci: Ziphephe iindawo zombhobho ezineenguqu ezibonakalayo okanye ezigobileyo, njengoko ezi zinto ziya kuphazamisa ngakumbi imilinganiselo.
• Ukubekwa kwesensor ngokufanelekileyo: Kuzo zombini iimitha zokuhamba ze-ultrasonic ezifakwayo kunye nezifakwayo, indawo efanelekileyo ye-sensor ibalulekile. Ii-sensor zokufaka kufuneka zibekwe apho ukuhamba kwamanzi kumela kakhulu umbhobho wonke, kwaye ii-sensor ezifakwayo mazifakwe kwiindawo zombhobho ezine-oval encinci.

Isiphelo

Nangona imibhobho yemizi-mveliso ingaqhelekanga ukuba yingqukuva ngokugqibeleleyo, ukuphambuka okuncinci kwingqukuva yemibhobho kudla ngokungachaphazeli kakhulu ukuthuthwa kolwelo. Nangona kunjalo, xa kusetyenziswa iimitha zokuhamba ze-ultrasonic—ingakumbi iintlobo ze-clamp-on okanye zokufaka—i-ovality yemibhobho inokuba nefuthe elikhulu ekuchaneni kokulinganisa. Ngokuqonda imiphumo ye-ovality nokukhetha ngononophelo iindawo ezifanelekileyo zokufakela, amashishini anokuqinisekisa ukulinganiswa kokuhamba okuthembekileyo nokuchanekileyo.