Ngenxa yokuthi ukuthutha kwamapayipi kulungele ikakhulukazi ukuthutha uwoyela, igesi, ngakho-ke, ipayipi embonini ye-petroleum ne-petrochemical yasetshenziswa kakhulu.Uwoyela ongahluziwe waminyaka yonke wangaphambili we-petrifaction Corporation 120000000 T, osetshenziswa kakhulu ngamapayipi;ukukhiqizwa konyaka kwe-steam, amalahle, udizili amathani ayizigidi ezingama-5000, okungama-80% awo ngamapayipi okuthutha;idivayisi yebhizinisi le-petrochemical, idivayisi yezinto zokuthutha zamakhemikhali awuketshezi noma igesi ikakhulukazi ngepayipi ukuze kuqedwe.Ngakho-ke, amabhizinisi e-petrochemical ukwakhiwa kwenhloko-dolobha yonyaka nasekukhiqizeni nasekulungiseni wonke adinga ukusebenzisa inani elikhulu lamapayipi ensimbi.Kodwa, ngenxa yomsebenzi wemboni ye-petrochemical ibonakala ngokushisa okuphezulu nokucindezela okuphezulu, okuvuthayo nokuqhuma, ngakho-ke ukusetshenziswa kwamashubhu ensimbi kudinga okuqinile kakhulu.

Ukumelana okuqondilewelding steel pipeukuthuthukiswa

Eminyakeni yamuva nje, kunepayipi lensimbi elingenamthungo lamazwe ngamazwe lekhwalithi ephezulu elizothatha indawo yenkambiso yokuthuthukiswa kwezindleko eziphezulu, ikakhulukazi ngenxa yobuchwepheshe bokukhiqiza amapayipi ashiselwe njalo, okubonakala kulezi zici ezilandelayo:

(1) ubuchwepheshe be-desulfurization, ukuze okuqukethwe kwesibabule sensimbi kuncishiswe, kuthuthukisa ikhwalithi yokushisela yepayipi yensimbi.

(2) ubuchwepheshe be-vacuum degassing, thuthukisa ubumsulwa bensimbi obungenalutho, kunciphisa ukufakwa, ikhwalithi ye-weld seam iyathuthuka.

(3) ngenxa yokwengezwa kwe-V, Ti, Nb nezinye izakhi ezikhethekile, kunciphisa ukulingana kwekhabhoni, ukuqina kwensimbi, amandla nezinye izakhiwo ziyathuthukiswa.

( 4) ukuthuthukiswa kwe-strip steel hot rolling technology, ukwanda kokunemba kwe-dimensional, ngakho usayizi wepayipi ukuchezuka ukuncishiswa.

( 5) ukuthuthukiswa kwezindlela zokuhlola ikhwalithi, njengokuhlola okungabhubhisi kwe-ultrasonic, umshini wokuhlola i-hydrostatic nezinye izinto zokusebenza kufanele zisetshenziswe, ukuze kuqinisekiswe ikhwalithi yomkhiqizo wokugcina.

Ipayipi lensimbi lokumelana eliqondile elisetshenziswa ebhizinisini le-petrochemical

Ukukhethwa kwamabhizinisi e-Petrochemical kwepayipi lensimbi ngenxa yokuthwala ingcindezi ethile, ngokuvamile esetshenziswa oketshezini olunepayipi lensimbi engenamthungo.Ipayipi elishiselwe ukumelana nogesi kanye noketshezi olunokungafani kwepayipi lensimbi engenamthungo, kunezinzuzo ezisobala zezomnotho, eziboniswa ikakhulukazi: kutshalomali oluncane;imishini, i-automation degree iphezulu;ukusetshenziswa okuphansi kwamandla okukhiqiza (ukwakheka kwegumbi lokushisa, kanye nepayipi lensimbi engenamthungo yokushisa noma ukubumba umdwebo obandayo);izindleko zokukhiqiza ziphansi, ngoba ithubhu yensimbi engenamthungo icishe ibe ngu-2/3;ukukhiqizwa okuqhubekayo, ukukhiqiza isivuno esikhulu futhi esiphezulu.Imboni yamapayipi ashiselwe iLongitudinal eChina yaqala ngeminyaka yama-50, yaqala sekwephuzile, inqubo yokukhiqiza nobuchwepheshe kanye nezwe elithuthukisiwe liyaqhathaniswa, lifaka umehluko omkhulu kakhulu.Iningi lokwehluleka kwemishini yobuchwepheshe bebhizinisi, ukuntuleka kwezindlela ezidingekayo zokutholwa, kodwa futhi nezinga eliphansi lebhande elifushane, elincane njengempahla eluhlaza, kubangele imikhiqizo yamapayipi ashiselwe ngembobo encane, umthamo ophansi wokuzala, isakhiwo somkhiqizo asinangqondo, esishiselwe. ukukhiqizwa kwepayipi ngo-80% kungasetshenziswa kuphela njengoketshezi olunengcindezi ephansi edlulisa ipayipi lamanzi lamalahle, zonke izinhlobo zepayipi elikhethekile eliphansi.Lolu hlobo lwemishini yokushisela ephansi kanye nezinga lobuchwepheshe, okwenza i