Udonga lwe-Membrane, olwaziwa nangokuthi udonga olupholiswe ngamanzi ulwelwesi, lusebenzisa amashubhu nensimbi eyisicaba eshiselwe ukwenza isikrini seshubhu, bese amaqembu amaningi ezikrini zamashubhu ahlanganiswa ndawonye ukuze kwakheke ukwakheka kodonga lolwelwesi.
Yiziphi izinzuzo ze-membrane wall structure?
I-membrane yodonga olupholile ngamanzi luqinisekisa ukuqina okuhle kwesithando somlilo. Kuma-boilers okucindezela okungalungile, kunganciphisa kakhulu i-coefficient yokuvuza komoya yesithando somlilo, kuthuthukise izimo zomlilo esithandweni, futhi kwandise indawo esebenzayo yokushisa imisebe, ngaleyo ndlela kulondoloze ukusetshenziswa kwensimbi. Izindonga ze-Membrane zisetshenziswa kakhulu kumajeneretha odongeni we-membrane. Zinezinzuzo zesakhiwo esilula, insimbi yokulondoloza, ukufakwa okungcono nokuqina komoya.
Isikrini seshubhu yolwelwesi oluncibilikisa igesi esebenza ngokwedlulele evikeleke umugqa wokukhiqiza wokushisela iwubuchwephesha bokukhiqiza isikrini seshubhu yolwelwesi oluthuthuke kakhulu emhlabeni kanye nemishini, kusukela ekulayisheni amashubhu, ukuqaqa insimbi eyisicaba, ukuqeda, ukulevelisa, ukuya ekushiseleni, njll. Qaphela ukulawula okuzenzakalelayo. Izibhamu ze-welding ezingenhla neziphansi zingafakwa ngesikhathi esifanayo, i-welding deformation incane, futhi cishe asikho isidingo sokulungiswa ngemuva kokushiswa, ukuze ubukhulu be-geometric panel ye-tube bunembile, ikhwalithi ye-weld ye-fillet inhle kakhulu, umumo muhle, isivinini sokushisela siyashesha, futhi ukusebenza kahle kokukhiqiza kuphezulu.
I-Nobeth steam generator inomugqa wokukhiqiza udonga oluthuthukisiwe, futhi isithando somlilo sithatha ubuchwepheshe bokuvala udonga olupholile ngamanzi. Enqubweni yokucubungula udonga lwe-membrane, i-welding ehlangene kabili ngasikhathi sinye isetshenziswa, ukuze i-workpiece ifudumale ngokulinganayo futhi iphaneli ye-tube ikhubazekile kancane; iphinde iqede isidingo sokuguqula i-welding, inciphise umthwalo wokulungisa ukulungiswa kwe-deformation ngemva kokushisela umkhiqizo, futhi ithuthukise kakhulu ukusebenza kahle kokukhiqiza. Ngakho-ke, amajeneretha amaningi e-membrane odongeni lwesitimu athunyelwa ehlanganiswe ngokugcwele kusukela efektri, okwenza ukuthutha nokufaka kube lula kakhulu, futhi inani lokufakwa endaweni elidingwa ngumsebenzisi liyancipha kakhulu.
(1) I-membrane yodonga olupholiswe ngamanzi lunomphumela wokuvikela ophelele odongeni lwesithando somlilo. Ngakho-ke, udonga lwesithando somlilo ludinga kuphela izinto zokufakelwa esikhundleni sezinto eziphikisayo, ezinciphisa kakhulu ukushuba nesisindo sodonga lwesithando somlilo, lwenza lula udonga lwesithando somlilo, futhi lunciphise izindleko zodonga lwesithando somlilo. Isamba sesisindo sikabhoyela.
(2) Udonga olupholiswe ngamanzi ulwelwesi lunokuqina komoya okuhle, lukwazi ukujwayelana nezidingo zokushiswa kwengcindezi eyakhayo kubhayela, aluthambekele ekubeni ne-slagging, luvuza kancane komoya, lunciphisa ukuphelelwa ukushisa kwe-exhaust, futhi luthuthukisa ukusebenza kahle kokushisa kwe-thermal. ubhayela.
(3) Izingxenye zingashiselwa ngumenzi ngaphambi kokushiya imboni, futhi ukufakwa kuyashesha futhi kulula.
(4) Ama-boilers asebenzisa izakhiwo zodonga lwe-membrane kulula futhi kulula ukuwagcina, futhi impilo yesevisi ye-boiler ingathuthukiswa kakhulu.
Welding of pipe panel fillet welds
I-Tube screen welding indlela ye-membrane wall light pipe kanye nesakhiwo sensimbi esiyisicaba. Inqubo Welding esetshenziswa ulwelwesi odongeni ukukhanya ipayipi kanye nesakhiwo steel flat ikakhulukazi kuhlanganisa okulandelayo:
1. Ukuncibilika okuzenzakalelayo kwegesi okuvikelwe ukushisela
Ukwakheka okuxubile kwegesi yokuvikela (Ar) 85% ~ 90% + (CO2) 15% ~ 10%. Emishinini, ipayipi nensimbi eyisicaba icindezelwa ama-roller angaphezulu naphansi futhi ahanjiswe phambili. Izibhamu zokushisela eziningi zingasetshenziswa ukuya phezulu naphansi. Ukushisela kwenziwa kanyekanye.
2. Intambo yokushisela i-arc ecwile emanzini
Lo mshini uyisikhungo sokusebenzela sokushisela uhlaka olumisiwe. Ithuluzi lomshini linemisebenzi yepayipi lensimbi kanye nokuma kwensimbi eyisicaba, ukubopha, ukuphakela, ukushisela kanye nokululama okuzenzakalelayo kwe-flux. Ngokuvamile ifakwe 4 noma 8 welding guns ukuqedela 4 noma 8 izikhundla ovundlile ngesikhathi esifanayo. Welding of fillet welds. Lobu buchwepheshe bulula ukusebenza futhi abunayo izidingo eziphezulu ebusweni bepayipi nensimbi eyisicaba. Kodwa-ke, ingafakwa kuphela ohlangothini olulodwa endaweni evundlile futhi ayikwazi ukufeza ukushisela ngesikhathi esisodwa phezulu nangaphansi.
3. I-semi-automatic gas metal arc welding
Lapho i-welding ngale ndlela, iphaneli ye-tube kufanele ihlanganiswe futhi ilungiswe kuqala, bese ihlanganiswa ngokusebenza ngesandla isibhamu sokushisela. Le ndlela yokushisela ayikwazi ukushisela izingxenye ezingenhla nezingezansi ngesikhathi esifanayo, futhi kunzima ukufeza ukuthungatha okuqhubekayo nokufana kwezibhamu eziningi zokushisela, ngakho-ke kunzima ukulawula ukubola kwe-welding. Lapho i-semi-automatic gas metal arc welding isetshenziselwa ukushisela iphaneli yamapayipi, ukunakwa kufanele kukhokhwe ekukhetheni okunengqondo kokulandelana kokushisela ukuze kuncishiswe ukuwohloka kokushisela. Imicu yokushisela yokuvala insimbi eyisicaba ezindaweni zokuvuleka kwendawo kumaphaneli eshubhu, kanye nokushisela kwefillet kwamaphaneli amashubhu amise okukhethekile afana nezihobho zomlotha obandayo namabhomu okushisa, kuvame ukushiselwa nge-semi-automatic gas metal arc welding.
Isikrini seshubhu yolwelwesi oluncibilikisa igesi esebenza ngokwedlulele evikeleke umugqa wokukhiqiza wokushisela iwubuchwephesha bokukhiqiza isikrini seshubhu yolwelwesi oluthuthuke kakhulu emhlabeni kanye nemishini, kusukela ekulayisheni amashubhu, ukuqaqa insimbi eyisicaba, ukuqeda, ukulevelisa, ukuya ekushiseleni, njll. Qaphela ukulawula okuzenzakalelayo. Izibhamu ze-welding ezingenhla neziphansi zingafakwa ngesikhathi esifanayo, i-welding deformation incane, futhi cishe asikho isidingo sokulungiswa ngemuva kokushiswa, ukuze ubukhulu be-geometric panel ye-tube bunembile, ikhwalithi ye-weld ye-fillet inhle kakhulu, umumo muhle, isivinini sokushisela siyashesha, futhi ukusebenza kahle kokukhiqiza kuphezulu.
Isikhathi sokuthumela: Oct-30-2023
