Amapayipi e-polyethylene (amapayipi e-PE) asetshenziswa kakhulu ekuhlinzekeni kwamanzi, ukuhanjiswa kwegesi, ukuchelela ngenkasa kwezolimo, nasezimbonini zokusebenza. Izinzuzo zabo, njengokumelana nokugqwala, ukuguquguquka okuphezulu, nempilo ende yesevisi, kubenza babe ingxenye ebalulekile yezinhlelo zamapayipi zanamuhla. Ngokusekelwe kubuningi bezinto ezibonakalayo, ifomu lesakhiwo, kanye nokusetshenziswa, amapayipi e-polyethylene angahlukaniswa abe izinhlobo eziningana, ngayinye enezici zokusebenza ezihlukile nezimo ezisebenzayo.
Ukuhlukaniswa ngobuningi
Amapayipi e-polyethylene ahlukaniswa kakhulu abe izigaba ezintathu ngokusekelwe ekumineni kwezinto zawo zokusetshenziswa: i-polyethylene ephansi-ephansi (i-LDPE), i-medium-i-polyethylene ephakathi nendawo (MDPE), ne-high-i-polyethylene (HDPE).
1. Amapayipi E-Polyethylene Aphansi-(LDPE)
Amapayipi e-LDPE enziwe-nge-polyethylene ephansi futhi anokuguquguquka okuphezulu kanye nokumelana nomthelela, kodwa amandla aphansi uma kuqhathaniswa. Ukuguquguquka kwazo kuzenza zifanelekele izinhlelo zokusebenza ezidinga ukugoba, njengamasistimu wokunisela ama-drip ezolimo namapayipi kagesi. Nokho, ngenxa yokuqina kwawo kokumelana nengcindezi, amapayipi e-LDPE ngokuvamile awasetshenziselwa{3}}ukuthutha uketshezi olunomfutho ophezulu.
2. Ipayipi-lokuminyana kwePolyethylene (MDPE) Emaphakathi
Ipayipi le-MDPE linobuningi phakathi kwe-LDPE ne-HDPE, elihlanganisa izinga lokuguquguquka nokumelana okuphezulu nokuqhekeka kokucindezeleka kwemvelo. Ipayipi le-MDPE livame ukusetshenziswa ezinhlelweni zamapayipi egesi ngoba ukushisela kwawo okuhle kanye nokumelana nokucindezela okumaphakathi kuhlangabezana nezidingo zokuphepha zokudluliswa kwegesi. Ngaphezu kwalokho, ipayipi le-MDPE libuye lilungele ezinye izinhlelo zokuhlinzeka ngamanzi, kodwa ukusetshenziswa kwalo kulinganiselwe kunepayipi le-HDPE.
3. Ipayipi{1}}Lokuminyana Kwe-Polyethylene (HDPE) Ephakeme
Ipayipi le-HDPE okwamanje liwuhlobo olusetshenziswa kakhulu lwepayipi le-polyethylene. Ukuminyana kwayo okuphezulu kanye nokucwebezela okuphezulu kuyinikeza ukumelana nengcindezi okuhle kakhulu, ukumelana nemihuzuko, nokuzinza kwamakhemikhali. Ipayipi le-HDPE lisetshenziswa kakhulu ekuhlinzekweni kwamanzi kamasipala, ukuthuthwa kwamanzi, ukudluliswa kwegesi, kanye nokuthuthwa koketshezi lwezimboni, nempilo yalo ende yesevisi (kuze kufike eminyakeni engama-50 noma ngaphezulu) nokumelana nokugqwala kuyenza ibe indawo ekahle yamapayipi ensimbi endabuko.
Ukuhlukaniswa Ngokwefomu Lesakhiwo
Ngokungeziwe ekuhlukaniseni ukuminyana, amapayipi e-polyethylene angaphinda ahlukaniswe ngokwesakhiwo sawo abe amapayipi-aqinile odongeni, amapayipi kathayela, amapayipi{1}}abiyelwe ngodonga, namapayipi{2}}enziwe ngensimbi.
1. Ipayipi eliqinile-lodonga lwe-polyethylene: Amapayipi e-PE aqinile-esodongeni anogqinsi olufana nolwando, anikeza ukumelana nokucindezela okuhle nokusebenza kahle kokuthutha uketshezi. Zifanele izinhlelo zokusebenza ezidinga amandla amapayipi aphezulu, njengokuphakelwa kwamanzi{4}nomfutho ophezulu kanye nokudluliswa kwegesi.
2. Ipayipi likathayela le-polyethylene: Amapayipi anothayela athuthukisa ukuguquguquka nokumelana nokucindezela kwangaphandle ngesakhiwo sikathayela odongeni lwamapayipi. Asetshenziswa kakhulu kumasistimu wokudonsa amanzi, amapayipi, kanye{2}nezinhlelo zokusebenza ezingezona zokucindezela. Ukufakwa kwazo okungasindi futhi kulula kuzenza zisetshenziswe kabanzi ekwakheni nasebunjiniyela bakamasipala.
3. Ipayipi{1}}elibiyelwe ngodonga: Amapayipi{2}}athayela aphindwe kabili ahlanganisa izendlalelo ezimbili. Isendlalelo sangaphandle sinesakhiwo sikathayela ukuze sithuthukise ukumelana nokucindezela, kuyilapho ungqimba lwangaphakathi lunodonga olubushelelezi lokunciphisa ukumelana noketshezi. Lolu hlobo lwamapayipi lusetshenziswa kakhulu ezinhlelweni zikamasipala zokudonsa amanzi kanye nendle, okuhlanganisa umnotho nokusebenza.
4. Insimbi-ipayipi le-polyethylene eliyinhlanganisela yepulasitiki: Amapayipi ayinhlanganisela yensimbi{2}}ahlanganisa ukumelana nokugqwala kwe-polyethylene namandla aphezulu ensimbi. Ngokuvamile zisebenzisa i-HDPE njengolwelwesi lwangaphakathi futhi ziqiniswa ngemicu yensimbi noma izintambo ngaphandle. Afanele-ukuthutha uketshezi lwezimboni oluphakeme noma amasistimu wamapayipi ezindaweni ezikhethekile.
Ukuhlukaniswa ngohlelo lokusebenza
Ngokusekelwe ezimweni ezithile zokufaka isicelo, amapayipi e-polyethylene angaphinde ahlukaniswe abe amapayipi okuhambisa amanzi, amapayipi egesi, amapayipi okunisela ngezolimo, namapayipi ezimboni. Isibonelo, amapayipi okuhambisa amanzi e-PE ahlangabezana nezindinganiso zokuhlanzeka kwamanzi okuphuza adinga ukuphasisa izitifiketi ezifanele (njenge-NSF, ISO, njll.) ukuze kuqinisekiswe ukuphepha kwekhwalithi yamanzi; kuyilapho amapayipi e-PE okunikezwa kwegesi kufanele ahlangabezane nezidingo eziqinile zokumelana nokukhula kancane kokuqhekeka nokumelana nokucindezela.
Amapayipi e-polyethylene angahlukaniswa ngezindlela ezihlukahlukene, ngezinhlobo ezahlukene zamapayipi ezinokugxila okuhlukile ngokwezinto zokwakha, ukwakheka, kanye nokusetshenziswa. Ukukhetha kahle uhlobo lwepayipi le-polyethylene kudinga ukucatshangelwa okuphelele kwezinto ezifana nendawo ethuthwayo, ingcindezi yokusebenza, izimo zemvelo, kanye nezidingo zokufakwa. Ngokuthuthuka kwesayensi yezinto zokwakha, ukusebenza kwamapayipi e-polyethylene kuthuthukiswa ngokuqhubekayo, futhi amathuba okusetshenziswa kwawo kumaphrojekthi ahlukahlukene wobunjiniyela azokhula kakhulu.
