Ukubaluleka kokuthuthukisa ipayipi elishiselwe le-longitudinal seam submerged-arc

Njengamanje, amapayipi asetshenziswa kakhulu ekuthuthweni kukawoyela negesi amabanga amade. Amapayipi ensimbi yamapayipi asetshenziswa kumapayipi amabanga amade ikakhulukazi ahlanganisa amapayipi ensimbi ashiselwe i-arc asondezekile kanye namapayipi ensimbi ashikelwe ngomthungo oqondile anezinhlangothi ezimbili. Ngenxa yokuthi ipayipi elihlanganisiwe le-arc elihlanganisiwe lenziwe ngensimbi ye-strip futhi ubukhulu bayo bodonga bulinganiselwe, ukuthuthukiswa kwebanga lensimbi kunqunyelwe ukwelashwa kokushisa kwempahla. Ukwengeza, kukhona ukushiyeka okungenakunqobeka kwepayipi elishiselwe i-arc elijikelwe emanzini, njenge-weld ende, ingcindezi enkulu eyinsalela kanye nokwethenjwa okubi kwe-weld. Ngenxa yezidingo ezikhulayo zamapayipi ensimbi asakazwa uwoyela negesi, awasasetshenziswa ezindaweni ezinabantu abaningi nasezindaweni ezinezidingo zokwethembeka okuphezulu, futhi amapayipi ashiselwe aqondile anobubanzi obukhulu ashintsha kancane kancane esikhundleni samapayipi ashiselwe athandelene.

Muva nje, i-China isheshisa ukuthuthukiswa kukawoyela negesi e-East China Sea. Ngokuthuthuka kokuxhashazwa kukawoyela ekujuleni kolwandle, ipayipi elibekwe phansi olwandle lithintwa amandla ahlangene okucindezela, amandla okushayisana namandla okugoba, futhi kusabonakala isenzakalo sokucaba, okuyisixhumanisi esibuthakathaka se-spiral welded. ipayipi. Ukuze kuthuthukiswe umthamo wokuthutha wamapayipi kanye nokuqinisekisa ukuthi ipayipi elihamba ngaphansi kwamanzi lizothuthukela odongeni oluwugqinsi, ipayipi elingaphansi kwamanzi ngokuvamile lithatha ipayipi elishiselwe ngqo. Ngakho-ke, uma kuqhathaniswa nepayipi elishiselwe okuvunguzayo, ipayipi elishiselwe ngokuqondile linobude obuphakeme bokunemba kanye ne-welding yokulungisa kalula, ngakho-ke kulesi sici, ipayipi elihlanganisiwe eliqondile liwukhetho lokuqala.

Imishini, ukwakhiwa, imboni yamakhemikhali nezinye izimboni zidinga amapayipi ashiselwe aqondile. Njengamanje, imbobo yangaphakathi yesihlalo se-valve yenziwa ngomshini ngemuva kokwakhiwa embonini yemishini, edla umsebenzi, edla isikhathi futhi edla izinto ezibonakalayo. Uma kusetshenziswa ipayipi elishiselwe ngomthungo oqondile, eliwugqinsi, lizokonga kakhulu. Ngaphezu kwalokho, ngenxa yezidingo zemishini ye-anti-flattening, amapayipi ahlanganisiwe kuphela asetshenziselwa ukwakha amapayipi; Ipayipi elishiselwe ngokuqondile kulindeleke ukuthi lisetshenziselwe amapayipi amakhemikhali.