Ipayipi le-API vs 3PE Ipayipi

Emaphrojekthini amakhulu wobunjiniyela anjengowoyela, igesi yemvelo, nokuphakelwa kwamanzi kamasipala, amapayipi asebenza njengomongo wesistimu yezokuthutha, futhi ukukhetha kwawo kunquma ngokuqondile ukuphepha, umnotho, nokuqina kwephrojekthi. Ipayipi le-API kanye nepayipi le-3PE, imikhiqizo emibili yamapayipi esetshenziswa kabanzi, ivame ukubekwa phambili ngamathimba onjiniyela. Nokho, zihluka kakhulu kumazinga okuklama, izici zokusebenza, nezimo ezisebenzayo. Ukuqonda kahle izici zabo kubalulekile ekuthuthukiseni ikhwalithi yephrojekthi.

Incazelo kanye Nezimo Zokusebenza Eziwumgogodla

Ipayipi le-API, elifushane elithi "American Petroleum Institute Standard Steel Pipe," lakhiwe ngokuhambisana namazinga omhlaba njengokuthiIpayipi lensimbi le-API 5L. Yakhiwe ngensimbi enamandla amakhulu futhi yakhiwe ngokusebenzisa izinqubo zokugoqa noma zokushisela. Amandla ayo ayisisekelo alele kumfutho wayo ophezulu kanye namandla aqinile, okuyenza isetshenziswe kabanzi ezinsizeni ezinengcindezi ephezulu njengamapayipi ahamba amabanga amade kawoyela negesi kanye namanifolds amaningi e-shale gas wellhead. Ukuzinza kwayo kwesakhiwo emazingeni okushisa adlulele asukela ku--40°C kuya ku-120°C kuyenza ibe yingxenye ebalulekile yokuthutha amandla.

Ipayipi le-3PE limele "ipayipi lensimbi elinezingqimba ezintathu le-polyethylene anti-corrosion." Isebenzisa ipayipi elivamile lensimbi njengesisekelo, elimbozwe ngesakhiwo esilwa nokugqwala esinezendlalelo ezintathu esihlanganisa i-epoxy powder coating (FBE), ingcina, ne-polyethylene. Idizayini yayo eyinhloko igxile ekuvikeleni ukugqwala, okunweba kakhulu impilo yesevisi yepayipi ngokuhlukanisa ama-microorganisms enhlabathini nama-electrolyte esisekelweni sepayipi lensimbi. Ezindaweni ezonakalisa kakhulu ezifana nokuphakelwa kwamanzi kamasipala, ukuhlanzwa kwendle, nokuthuthwa kwamanzi amakhemikhali, ipayipi le-3PE lingafinyelela impilo yesevisi engaphezu kweminyaka engama-50, okulenze libe yisixazululo esifakazelwe sokulwa nokugqwala ekwakhiweni kwamapayipi angaphansi komhlaba.

Ukuqhathanisa Ukusebenza Okubalulekile

Ngokombono wokusebenza okuyisisekelo, amapayipi amabili ahluke ngokusobala ekumeni kwawo. Mayelana nezakhiwo zemishini, ipayipi le-API ngokuvamile linamandla okukhiqiza angaphezu kuka-355 MPa, namanye amabanga aphezulu (njengama-MPa).I-API 5L X80) efinyelela ku-555 MPa, ekwazi ukumelana nezingcindezi zokusebenza ezingaphezu kuka-10 MPa. Ipayipi le-3PE, ngakolunye uhlangothi, lincike ngokuyinhloko kwipayipi lensimbi eliyisisekelo ukuze libe namandla, futhi ungqimba olulwa nokugqwala ngokwalo alunawo amandla okuthwala ingcindezi, okwenza lufaneleke kakhulu ukuthutha okuphakathi nokuphansi kwengcindezi (ngokuvamile ≤4 MPa).

Amapayipi e-3PE anenzuzo enkulu ekumelaneni nokugqwala. Isakhiwo sabo sezendlalelo ezintathu sidala umgoqo ombaxambili "wokuhlukaniswa ngokomzimba + ukuvikelwa kwamakhemikhali." Ukuhlolwa kwesifutho sikasawoti kukhombisa ukuthi izinga lokugqwala kwazo liyi-1/50 kuphela lepayipi elivamile lensimbi elingenalutho. NgenkathiAmapayipi we-APIzingavikelwa ekugqwaleni ngokufaka uthayela nokudweba, ukusebenza kahle kwazo ezindaweni ezingcwatshiwe noma ezingaphansi kwamanzi kusengaphansi kwamapayipi e-3PE, okudinga izinhlelo ezengeziwe zokuvikela i-cathodic, okwandisa izindleko zephrojekthi.

Amasu okukhetha kanye namathrendi embonini

Ukukhethwa kwephrojekthi kufanele kuhambisane nomgomo "wokulingana kwezimo": Uma indawo yokudlulisa inguwoyela noma igesi enomfutho ophezulu, noma indawo yokusebenza ihlangabezana nokuguquguquka okukhulu kwezinga lokushisa, amapayipi e-API ayakhethwa, amabanga ensimbi afana ne-X65 ne-X80 afaniswa nesilinganiso sokucindezela. Ngokuthutha amanzi agqitshiwe noma amakhemikhali angcolile, amapayipi e-3PE ayindlela yokonga kakhulu, futhi ubukhulu bongqimba oluphikisana nokugqwala kufanele bulungiswe ngokwezinga lokubola kwenhlabathi.

Isitayela samanje semboni sibheke "ekuhlanganiseni kokusebenza." Ezinye izinkampani zihlanganisa isisekelo esiqinile sepayipi le-API nesakhiwo esinezendlalelo ezintathu sokunqanda ukugqwala kwepayipi le-3PE ukuze kuthuthukiswe "ipayipi elihlanganisiwe lokulwa nokugqwala." Lamapayipi ahlangabezana nezidingo zokudluliswa kwengcindezi ephezulu kanye nokuvikela ukugqwala kwesikhathi eside. Lamapayipi asevele asetshenziswa kakhulu ekukhiqizeni uwoyela olwandle kanye negesi kanye namaphrojekthi okuphambukisa amanzi aphakathi kwezitsha. Le ndlela emisha inikeza isisombululo esingcono sobunjiniyela bamapayipi.