Ngesikhathi sokukhiqizwa kwamapayipi ensimbi e-arc angaphansi kwamanzi, izinga lokushisa kufanele lilawulwe ngokuqinile ukuze kuqinisekiswe ukwethembeka kwe-welding. Uma izinga lokushisa liphansi kakhulu, indawo yokushisela ingase ingafinyeleli izinga lokushisa elidingekayo ekushiseleni. Lapho ingxenye enkulu yesakhiwo sensimbi sisaqinile, kuba nzima ngezinsimbi emikhawulweni yomibili ukuthi ingene enye nenye futhi ihlangane ndawonye. Ngaleso sikhathi, lapho izinga lokushisa liphezulu kakhulu, kwakunensimbi eningi esimweni esincibilikisiwe endaweni yokushisela. Ukuthungwa kwalezi zingxenye kwakuthambile kakhulu futhi kunoketshezi oluhambisanayo, futhi kungase kube namaconsi ancibilikisiwe. Lapho insimbi enjalo iconsa, Akukho futhi insimbi eyanele ukungena komunye nomunye. Futhi ngesikhathi sokushisela, kuzoba khona ukungalingani kanye nemithungo yokushisela ukwenza izimbobo ezincibilikisiwe.

Amapayipi ensimbi e-arc angaphansi kwamanzi angasetshenziselwa ukuthuthwa kwamanzi: ukuhlinzekwa kwamanzi kanye nokukhipha amanzi. Ezokuthutha igesi: igesi yamalahle, isitimu, igesi ye-petroleum ewuketshezi. Ngezinhloso zesakhiwo: ukunqwabelanisa amapayipi, amabhuloho; amapayipi wamadokodo, imigwaqo, izakhiwo zokwakha, njll. Amapayipi ensimbi e-arc angaphansi kwamanzi angamapayipi ensimbi asongekile enziwe ngamakhoyili ensimbi ayisihluthulelo njengempahla yokusetshenziswa, akhishwa emazingeni okushisa avamile, futhi ashiselwe ubuchwepheshe bokushisela obunama-automatic kabili emaceleni angaphansi kwe-arc. . Ikhanda nomsila we-steel strip kuhlanganiswe ngezinqe kusetshenziswa i-arc welding enentambo eyodwa noma izintambo ezimbili ezingaphansi kwamanzi. Ngemva kokugoqelwa epayipini lensimbi, ukushisela kwe-arc okuzenzakalelayo kusetshenziselwa ukulungisa ukushisela. Ukusebenzisa isilawuli sangaphandle noma ukwenza i-roller yangaphakathi. Kokubili ukushisela kwangaphakathi nangaphandle kusebenzisa imishini yokushisela kagesi yocingo olulodwa noma i-double submerged arc welding ukuze kutholwe ukucaciswa kokushisela okuzinzile.

Yikuphi ukuhlolwa okudingeka kwenziwe ngaphansi kwamanzi amapayipi ensimbi ye-arc ngemva kokukhiqizwa?
(1) Ukuhlolwa kwengcindezi ye-Hydraulic: Amapayipi ensimbi anwetshiwe ahlolwa ngamunye ngamunye emshinini wokuhlola umfutho we-hydraulic ukuze kuqinisekiswe ukuthi amapayipi ensimbi ahlangabezana nokucindezela kokuhlola okudingekayo ngokwezinga. Umshini unemisebenzi yokuqopha neyokugcina ngokuzenzakalelayo;
(2) Ukunwetshwa kobubanzi: Bonke ubude bepayipi lensimbi ye-arc elingaphansi kwamanzi liyanwetshwa ukuze kuthuthukiswe ukunemba kobukhulu bepayipi lensimbi futhi kuthuthukiswe ukusatshalaliswa kokucindezeleka ngaphakathi kwepayipi lensimbi;
(3) Ukuhlolwa kwe-X-ray II: Ukuhlolwa kwethelevishini yezimboni ze-X-ray kanye ne-pipe end weld photography kwenziwa epayipini lensimbi ngemva kokunwetshwa kobubanzi nokuhlolwa komfutho we-hydraulic;
(4) Ukuhlolwa kwezinhlayiyana zikazibuthe zeziphetho zamapayipi: Lokhu kuhlola kwenziwa ukuze kutholwe amaphutha okuphela kwamapayipi;
(5) Ukuhlolwa kwe-X-ray I: Ukuhlolwa kwethelevishini yezimboni ze-X-ray kwamashisela angaphakathi nangaphandle, kusetshenziswa uhlelo lokucubungula izithombe ukuze kuqinisekiswe ukuzwela kokutholwa kwamaphutha;
(6) Hlola amashisela angaphakathi nangaphandle epayipi lensimbi elivunguzayo kanye nezinto eziyisisekelo kuzo zombili izinhlangothi zokushisela;
(7) I-Sonic inspection II: Phinda uhlole i-sonic ngayinye ngayinye ukuze uhlole iziphambeko ezingase zenzeke ngemva kokunwetshwa kobubanzi kanye nomfutho we-hydraulic wamapayipi ensimbi ashiselwe ngomthungo oqondile;
(8) I-Chamfering: Lungiselela ukuphela kwepayipi lepayipi lensimbi eliphumelele ukuhlolwa ukuze kuzuzwe usayizi we-bevel wokugcina wepayipi odingekayo;
(9) I-anti-corrosion and coating: Amapayipi ensimbi afanelekayo azokwazi ukulwa nokugqwala futhi ahlanganiswe ngokuvumelana nezidingo zabasebenzisi.

Ukufakwa kwepayipi lensimbi ye-arc engaphansi kwamanzi kanye nemihlangano eyenziwe ngaphambili embonini yokucubungula kumele kuqedwe ngokuphelele, okungukuthi, wonke amajoyinti okushisela ashiselwe, amalunga e-flange afakwe ngamapuleti asekela isikhathi eside, futhi wonke ama-flange bolts agqokwe futhi aqiniswa. . Inani lokuqhathanisa lokuklama lokuchezuka kobukhulu bangaphandle bomhlangano wepayipi lensimbi ye-arc elingaphansi kwamanzi alikwazi ukudlula le mithethonqubo elandelayo; lapho ubukhulu bangaphandle bomhlangano wepayipi lensimbi le-arc elingaphansi kwamanzi lingu-3m, ukuchezuka kungu-± 5mm. Lapho ubukhulu bangaphandle bokuhlanganiswa kwepayipi lensimbi ye-arc elingaphansi kwamanzi bukhuphuka ngo-1m, inani lokuchezuka linganyuswa ngo-±2mm, kodwa ukuchezuka okuphelele akukwazi ukuba kukhulu kuno-±15mm.

Izingxenye ezishiselwe ngesandla ezinoxhumo olune-flange noma ama-valve azohlolwa. Yonke imihlangano kufanele ibhalwe ngokuhambisana nezidingo zamapayipi amafushane emidwebo, futhi iziphetho zazo zokuphuma zizovalwa ngamapuleti ayimpumputhe noma amapulaki. I-outlet flange ekugcineni kwepayipi yomhlangano ingashiswa ngokuqinile uma izimbobo ze-flange bolt zihlukaniswe ngokulinganayo. Uma kuyi-flange exhunywe kumishini noma i-flange exhunywe ku-flange yegatsha yezinye izingxenye, ingaba ne-spot welded futhi ibekwe ekupheleni kwepayipi. Ingabekwa kuphela ngemva kokuhanjiswa endaweni yokufaka bese ishiselwa ngokuqinile. Amavalvu kufanele futhi afakwe endaweni yokuhlanganisa, futhi amapayipi amafushane amapayipi endle ne-vent, ukufakwa kwezinsimbi, kanye nezimpawu zokuphakama zokufaka abakaki abashelelayo kufanele bashiselwe. Ingaphakathi lesigaba sepayipi elenziwe ngaphambili kufanele lihlanzwe. Umhlangano wepayipi lensimbi ye-arc elingaphansi kwamanzi kufanele ucabangele ukunethezeka kokuhamba nokufaka futhi ube nokuvuleka okubukhoma okulungiswayo. Kufanele futhi ibe nokuqina okwanele ukuvimbela ukuguquguquka kwesikhathi eside.