Kwiminyaka emininzi, i-diameter enkulu (i-intshi ezili-16 nangaphezulu) imarike yombhobho wamanzi imelwe yi-Steel Pipe (SP), i-Precast Concrete Cylindrical Pipe (PCCP), i-Ductile Iron Pipe (DIP) kunye ne-PVC (i-Polyvinyl Chloride) umbhobho.Kwelinye icala, umbhobho we-HDPE wenza kuphela i-2% ukuya kwi-5% yemarike yombhobho wamanzi odayamitha omkhulu.
Eli nqaku lijolise ekushwankatheleni imiba yokuqonda ehambelana nemibhobho emikhulu ye-HDPE kunye neengcebiso zokudityaniswa kwemibhobho, ukufakwa, ubukhulu, ukuyila, ukufakela kunye nokugcinwa.
Ngokwengxelo ye-EPA, imiba yokuqonda ejikeleze imibhobho emikhulu ye-HDPE ibilisa ukuya kutsho kumanqaku amathathu aphambili.Okokuqala, kukho ukunqongophala ngokubanzi kokuqonda imveliso.Kwiiprojekthi zikamasipala, inani labachaphazelekayo linokwenza nzima ukudluliselwa kolwazi kwiimveliso ezinxulumeneyo.Ngokufanayo, abasebenzi basebenzisa iimveliso eziqhelekileyo kunye nobuchwepheshe.Okokugqibela, oku kunqongophala kolwazi kunokukhokelela kwimbono ephosakeleyo yokuba i-HDPE ayifanelekanga ukusetyenziswa kwamanzi.
Ingxaki yesibini yokuqonda ivela kwingcamango yokuba ukusebenzisa izinto ezintsha kwandisa umngcipheko, nangona ulwazi oluthile lukhoyo.Abasebenzisi bahlala bebona i-HDPE njengemveliso entsha yesicelo sabo esithile, ngaphandle kwendawo yabo yokuthuthuzela ngenxa yokuba abanamava kuyo.Umqhubi omkhulu uyafuneka ukukholisa izinto eziluncedo ukuzama izinto ezintsha kunye nezicelo.Ikwanika umdla kakhulu.
Eyona ndlela ingcono yokoyisa ezi ngxaki zicingelwayo kukunceda ulinganise imingcipheko ecingelwayo kunye nokubonisa izibonelelo ezinokulinganiswa zokusebenzisa imathiriyeli emitsha.Kwakhona, kunokuba luncedo ukujonga imbali yeemveliso ezifanayo ezisetyenziswayo.Ngokomzekelo, izixhobo zegesi zendalo zisebenzisa imibhobho ye-polyethylene ukususela phakathi kwe-1960.
Nangona kulula ukuthetha malunga neempawu zomzimba kunye neekhemikhali zemibhobho ye-HDPE, indlela engcono yokunceda ukulinganisa izibonelelo zayo kukuchaza iimpawu zayo ngokunxulumene nezinye izixhobo zemibhobho.Kuphando lwezixhobo ezili-17 zase-UK, abaphandi bachaza umyinge wokungaphumeleli okuphakathi kwezinto ezahlukeneyo zemibhobho.Imilinganiselo yokungaphumeleli kwe-avareji yeekhilomitha ezingama-62 ukusuka kwi-20.1 ukungaphumeleli kwinqanaba eliphezulu lombhobho wensimbi ukuya kwii-3.16 zokungaphumeleli kwinqanaba eliphantsi lombhobho we-PE.Esinye isiphumo esinomdla sengxelo kukuba ezinye ze-PE ezisetyenziswe kwimibhobho zenziwe ngaphezu kweminyaka engama-50 edlulileyo.
Namhlanje, abavelisi be-PE banokudala izakhiwo zepolymer ezomeleziweyo ukuphucula ukukhula okucothayo kokuqhekeka, amandla okuqina, i-ductility, uxinzelelo lwe-hydrostatic oluvumelekileyo, kunye nezinye iipropathi zezinto zemibhobho.Ukubaluleka kolu phuculo akunakubaxwa.Ngexesha le-1980 kunye ne-2000s, uphando lokwaneliseka kweenkampani eziluncedo ngemibhobho ye-PE yatshintsha kakhulu.Ukwaneliseka kwabathengi kuye kwajikeleza malunga ne-53% ngo-1980, ukunyuka ukuya kuma-95% ngo-2000.
Ezona zizathu ziphambili zokukhetha imathiriyeli yombhobho we-HDPE kwi-diameter enkulu yothumelo lwe-mains ibandakanya ukuguquguquka, amajoyina adibeneyo, ukuxhathisa ukubola, ukuhambelana neendlela zobugcisa ezingenazintambo ezifana nokugrumba okuthe tye, kunye nokugcinwa kweendleko.Ekugqibeleni, ezi zibonelelo zinokufumaneka kuphela xa iindlela ezifanelekileyo zokwakha, ngakumbi i-fusion welding, ilandelwa.
Iimbekiselo:https://www.rtfpipe.com/news/large-diameter-hdpe-pipe-for-municipal-piping-systems.html
Ixesha lokuposa: Jul-31-2022
