Inhloso yezinto zokwakha
Ukuhlanganisa indawo yangaphandle yamapayipi ensimbi kubalulekile ukuvikela ukugqwala. Ukugqwala ebusweni bamapayipi ensimbi kungathinta kakhulu ukusebenza kwabo, ikhwalithi, nokubukeka okubukwayo. Ngakho-ke, inqubo yokuhlanganisa inomthelela omkhulu kwikhwalithi ephelele yemikhiqizo yensimbi yensimbi.
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Izidingo zezinto zokwakha
Ngokuya ngamazinga abekwe yi-American Petroleum Institute, amapayipi ensimbi kufanele amelane nokugqwala okungenani izinyanga ezintathu. Kodwa-ke, isidingo sezikhathi ezinde zokulwa zokulwa sesikhuphukile, ngabasebenzisi abaningi abadinga ukumelana kwezinyanga ezintathu kuya kweziyisithupha ezimweni zokugcina zangaphandle. Ngaphandle kwesidingo eside, abasebenzisi balindele ukumbona ukuze kugcinwe indawo ebushelelezi, ngisho nokusatshalaliswa kwama-ejenti alwa nama-ejenti ngaphandle kokuqaqa noma ama-shushi angathinta ikhwalithi ebonakalayo.
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Izinhlobo zezinto zokwenziwa kwezinzuzo nezinzuzo zabo kanye ne-Cons
Emaphathini wamapayipi e-Urban angaphansi komhlaba,Amapayipi ensimbiziya ngokuya zisetshenziselwa ukuthutha igesi, uwoyela, amanzi, nokuningi. Izimbozo zalawa mapayipi zivele ezintweni zendabuko zendabuko ziye ePolyethylene Resin nase-Epoxy Resin izinto. Ukusetshenziswa kwe-polyethylene resin coatings kwaqala ngawo-1980s, futhi ngezicelo ezahlukahlukene, izakhi nezinqubo zokuhlanganisa zibone ukuthuthuka kancane kancane.
3.1 I-Petroleum Asphalt Coating
I-Petroleum asphalt coating, ungqimba lwendabuko olwalulwa nelonakalisayo, liqukethe izingqimba ze-petroleum asphalt, ziqiniswe ngendwangu ye-fiberglass kanye nefilimu yangaphandle ye-polyvinyl chloride ye-polyvinyl chloride yangaphandle. Inikeza amandla amahle kakhulu, ukunamathela okuhle ezindaweni ezahlukahlukene, kanye nokusebenza kwezindleko. Kodwa-ke, kunezingqinamba ezibandakanya ukuguquguquka kwezinguquko zokushisa, zingena emazingeni okushisa aphansi, futhi zithambekele ekugugeni nasekuqhekekeni, ikakhulukazi ezimweni zokuvikela ezinamadwala kanye nezindleko ezingezekile.
3.2 coal tal epoxy coating
I-Coal Tar Epoxy, eyenziwe nge-epoxy resin kanye ne-coal tal asphalt, ibonisa amanzi amahle kakhulu kanye nokumelana kwamakhemikhali, ukumelana nokugqwala, amandla amahle, amandla okufakwa. Kodwa-ke, kudinga isikhathi eside sokwelapha i-app-application yesikhathi eside, okwenza kube nokungenwe yimiphumela emibi evela ezimomeni zezulu ngalesi sikhathi. Ngaphezu kwalokho, izifunda ezahlukahlukene ezisetshenziswe kulolu hlelo lokuhlanganisa zidinga ukugcinwa okukhethekile, ukukhulisa izindleko.
3.3 I-epoxy powder coating
I-epoxy powder coating, eyethulwa ngawo-1960s, ifaka i-elektrost yokufafaza i-flader ungene endaweni ephethwe ngaphambili futhi evutha ngaphambi kokushisa kwamaphayiphu, yakha ungqimba olunenhlamba olumanyekile. Izinzuzo zayo zifaka uhla lokushisa olubanzi (-° C C kuya ku-100 ° C), ukunamathela okuqinile, ukumelana okuhle, ukuguquguquka okuhle ku-Cathodic Disbondic, umthelela, ukuguquguquka kanye nomonakalo we-weld. Kodwa-ke, ifilimu layo elincanyana lenza ukuthi lithambekele ekulimaleni futhi lidinga amasu wokukhiqiza ama-posisticiated kanye nemishini, ukubeka izinselelo isicelo sensimu. Ngenkathi idlula ezicini eziningi, iwela ngokuqhathaniswa ne-polyethylene ngokuya ngokumelana nokushisa nokuvikelwa kokugqwala okuphelele.
3.4 polyethylene anti-corlosive coating
I-PolyethLlene inikezela ukumelana kahle nomthelela omuhle nobulukhuni obuphezulu kanye nobubanzi bokushisa obubanzi. Ithola ukusetshenziswa okubanzi ezifundeni ezibandayo njengeRussia neNtshonalanga Yurophu yamapayipi ngenxa yokuguquguquka kwayo okuphakeme kanye nokumelana nomthelela, ikakhulukazi emazingeni okushisa aphansi. Kodwa-ke, izinselelo zihlala zisetshenziswa kumapayipi amakhulu abubanzi, lapho ukuqhekeka kwengcindezi kungenzeka khona, futhi ukungena kwamanzi kungaholela ekugcekeni ngaphansi kokugoqa, kudinga ukuthuthukiswa okwengeziwe nasezinsusweni zohlelo lokusebenza.
3.5 Ukuhlanganiswa okunamandla okulwa nokulwa
Izimbobo ezinamandla zokulwa nokuwohloka zinikeza ukumelana okuthuthuke kakhulu kokugqwala ngokuqhathaniswa nokugqokwa okujwayelekile. Bakhombisa ukusebenza kwesikhathi eside ngisho nasezimweni ezinzima, nama-Lifes adlula iminyaka eyi-10 kuye kwayi-15 ngamakhemikhali, eManzini, kanye neminyaka emi-5 kwi-acidic, alkali, noma izimo zesawoti. Lezi zimbozo zivame ukuba nobukhulu befilimu owomile kusukela ngo-200μm kuya ku-2000μm, kuqinisekiswa ukuvikeleka okuphezulu nokuqina. Zisetshenziswa kabanzi ezakhiweni zasolwandle, imishini yamakhemikhali, amathangi okugcina, namapayipi.
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Izinkinga ezijwayelekile ngezinto zokwakha ama-coating
Izinkinga ezijwayelekile ezinama-coatings zifaka isicelo sokungalingani, ukudonsa ama-ejenti alwa nama-bubble.
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Ukuhlaziywa kwezinkinga zekhwalithi yenhlanganisela
Zonke izinkinga zivela ngezizathu ezahlukahlukene, kubangelwa yizici ezahlukahlukene; Futhi inqwaba yepayipi lensimbi eqokonyiswe ikhwalithi yenkinga futhi kungaba yinhlanganisela yabaningana. Izimbangela zokuhlanganiswa okungalingani zingahlukaniswa zihlukaniswe izinhlobo ezimbili, enye into engalingani ebangelwa ukufafaza ngemuva kokuthi ipayipi lensimbi lingena ebhokisini le-coating; Okwesibili yinto engalingani ebangelwa ukungafafazi.
Isizathu sokuba yinto yokuqala kulula ukubona, kumathuluzi we-coation lapho ipayipi lensimbi lingena ebhokisini le-360 ° ezungeze izibhamu ezi-6 (i-casing line inezibhamu eziyi-12) zokufafaza. Uma isibhamu ngasinye sifafazwa ngosayizi we-flow sihlukile, khona-ke kuzoholela ekusakazweni okungalingani kwe-ejenti ye-anticorrosive ezindaweni ezahlukahlukene zepayipi lensimbi.
Isizathu sesibili ukuthi kunezinye izizathu zento engalingani ye-coating ehlukile ngaphandle kwesici sokufafaza. Kunezinhlobo eziningi zezici, njengokugqwala kwebhomu kwebhomu okugcwele, ubulukhuni, ukuze kunzima ukusatshalaliswa ngokulinganayo; Umphezulu wePipe wensimbi unesilinganiso sokucindezela kwamanzi esishiywe ngemuva lapho i-emulsion, lesi sikhathi sokwenza imali ngenxa yokuxhumana ne-emulsion, ukuze kungabikho ukuhlanganiswa kwezingxenye zepayipi lensimbi, okuholela ekuhlolweni kwalo lonke ipayipi lensimbi akuwona umfaniswano.
(1) Isizathu se-anticorrosive ejenti elenga amaconsi. Isigaba sesiphambano sepayipi lensimbi siyindilinga, ngaso sonke isikhathi lapho umenzeli we-anticorrosive efafazwe ebusweni bepayipi lensimbi, i-agent anticorrosive engxenyeni engenhla ngenxa yesici samandla adonsela phansi, okuzokwakha into ye-Hanging Drop. Into enhle ukuthi kukhona ukuhlinzekwa kwama-oveni kulayini wokukhiqiza we-coating wefektri yensimbi, engashisa futhi aqinise i-agent anticorrosive efafazwe ebusweni bepayipi lensimbi ngesikhathi futhi anciphise uketshezi lwe-agent yensimbi ngesikhathi futhi wehlise uketshezi lwe-agent anticorrosive. Kodwa-ke, uma ukubonwa kwe-ejenti ye-anticorrosive akuphezulu; akukho ukufudumala okufika ngesikhathi ngemuva kokufafaza; noma lokushisa lokushisa aliphezulu; I-nozzle ayisebenzi kahle esimweni sokusebenza, njll. izoholela kuma-anticorrosive ejenti elenga amaconsi.
(2) Izimbangela ze-anticorrosive foaming. Ngenxa yendawo yokusebenza yesayithi yomswakama womoya, ukuhlakazeka kwepende kungukuthi ukwehla kwamazinga okushisa okuphuthumayo kuzodala into yokugcina ye-bubbling. Imvelo yomswakama yomoya, izimo zokushisa eziphansi, okuvinjelwe okufafazwe kwalabahlakazwa kumaconsi amancane, kuzoholela ekwehleni kwamazinga okushisa. Amanzi asemoyeni anomswakama ophakeme ngemuva kokuvutha kwamazinga okushisa azokhipha amaconsi amahle ahlanganiswe nokulondolozwa, bese ekugcineni engena ngaphakathi kokuhlanganiswa, okuphumela ekunciphiseni kwe-coating.
Isikhathi sePosi: Dec-15-2023