Imininingwane Yomzimba
Okokuqala nokubaluleke kakhulu, i-flange kumele ilingane nepayipi noma imishini eyenzelwe yona. Imininingwane ebonakalayo yama-flange amapayipi ifaka ubukhulu kanye nokwakheka komklamo.
Ubukhulu beFlange
Ubukhulu obuphathekayo kufanele buchazwe ukuze kulinganiswe ama-flange ngendlela efanele.
Ububanzi bangaphandle (OD) yibanga eliphakathi kwemiphetho emibili ephikisanayo yobuso be-flange.
Ubukhulu bubhekisela ekujikeni komphetho wangaphandle onamathelayo, futhi abufaki ingxenye yeflange ebamba ipayipi.
Ububanzi bendilinga yebholithi ubude obusukela enkabeni yembobo yebholithi kuya enkabeni yembobo ephikisanayo.
Usayizi wepayipi usayizi wepayipi ohambisana neflange yepayipi, ngokuvamile wenziwa ngokwezindinganiso ezamukelekayo. Ngokuvamile uchazwa izinombolo ezimbili ezingezona ezinobukhulu, usayizi wepayipi ojwayelekile (i-NPS) kanye neshejuli (i-SCH).
Usayizi webhore elilinganiselwe ububanzi bangaphakathi besixhumi seflange. Lapho ukhiqiza futhi u-oda noma yiluphi uhlobo lwesixhumi sephayiphi, kubalulekile ukufanisa usayizi webhore wento nosayizi webhore wephayiphi yokuhlanganisa.
Ubuso beFlange
Ubuso be-Flange bungenziwa ngokwezidingo eziningi zomklamo ezisekelwe ezimweni ezenziwe ngokwezifiso. Ezinye izibonelo zifaka:
Ifulethi
Ubuso obuphakanyisiwe (RF)
Ijoyinti yohlobo lwendandatho (RTJ)
Umsele we-O-ring
Izinhlobo zamaFlange ePipe
Ama-flange amapayipi angahlukaniswa abe izinhlobo eziyisishiyagalombili ngokusekelwe kumklamo. Lezi zinhlobo ziyi-blind, i-lap joint, i-orifice, i-reducing, i-slip-on, i-socket-weld, i-threaded, kanye ne-weld neck.
Ama-blind flanges angamapuleti ayindilinga angenawo umbambo ophakathi osetshenziselwa ukuvala imikhawulo yamapayipi, ama-valve, noma imishini. Asiza ekuvumeleni ukufinyelela okulula emgqeni uma usuvaliwe. Angasetshenziswa futhi ekuhlolweni komfutho wokugeleza. Ama-blind flanges enzelwe ukulingana namapayipi ajwayelekile kuwo wonke amasayizi ngezilinganiso zokucindezela eziphakeme kunezinye izinhlobo zama-flange.
Ama-flange ahlangene e-lap asetshenziswa kumapayipi afakwe ipayipi elihlanganisiwe noma ngeziphetho ze-stub ze-lap joint. Angazungeza ipayipi ukuze kube lula ukuhlangana nokuhlanganisa imigodi yamabholithi ngisho nangemva kokuba ukushintshwa sekuqediwe. Ngenxa yale nzuzo, ama-flange ahlangene e-lap asetshenziswa ezinhlelweni ezidinga ukuhlukaniswa njalo kwama-flange namapayipi. Afana nama-flange angena, kodwa anomphetho ogobile ebholeni nasebusweni ukuze afake isiphetho se-stub se-lap joint. Izilinganiso zokucindezela zama-flange ahlangene e-lap ziphansi, kodwa ziphakeme kunezama-slip-on flange.
Ama-flange ashelelayo aklanyelwe ukushelela phezu kokuphela kwamapayipi bese eshintshwa endaweni yawo. Ahlinzeka ngokufakwa okulula nokungabizi kakhulu futhi alungele ukusetshenziswa okuphansi kwengcindezi.
Ama-flange okushisela amasokhethi afaneleka kakhulu kumapayipi amancane, anomfutho ophezulu. Ukwenziwa kwawo kufana nokwama-flange okushelelayo, kodwa ukwakheka kwesikhwama sangaphakathi kuvumela ukuthi kube nembobo ebushelelezi kanye nokugeleza koketshezi okungcono. Uma eshiselwe ngaphakathi, lawa ma-flange anamandla okukhathala angama-50% ngaphezu kwama-flange okushelelayo ashelelwe kabili.
Ama-flange anezintambo ayizinhlobo ezikhethekile ze-flange yamapayipi engaxhunywa epayipini ngaphandle kokushisela. Afakwa izintambo ebhoreni ukuze afane nentambo yangaphandle epayipini futhi ancishisiwe ukuze kudalwe uphawu phakathi kwe-flange nepayipi. Ama-seal weld angasetshenziswa kanye nokuxhumeka kwezintambo ukuze kuqiniswe futhi kuqiniswe. Asetshenziswa kangcono kumapayipi amancane kanye nokucindezela okuphansi, futhi kufanele agwenywe lapho kusetshenziswa imithwalo emikhulu kanye nama-torque aphezulu.
Ama-flange entamo yokushisela ane-hub ende enciphile futhi asetshenziselwa ukusetshenziswa komfutho ophezulu. I-hub enciphile idlulisela ukucindezeleka kusuka ku-flange kuya epayipini uqobo futhi inikeza ukuqina okulwa nokufakwa kwezitsha.
Isikhathi sokuthunyelwe: Okthoba-21-2021
