Njira yopanga
1. Kutentha kwachubu kwachubu kuli pansi pa 450 ℃, chitoliro chanyumba chimapangidwa makamaka ndi No. 10, ayi.20 carbon bonded zitsulo otentha adagulung'undisa chitoliro kapena ozizira kukokedwa chitoliro.
2. Machubu opopera opopera nthawi zambiri amagwiritsidwa ntchito pansi pa kutentha kwambiri komanso kupanikizika kwambiri.Pansi pa kutentha kwakukulu kwa gasi ndi nthunzi yamadzi, makutidwe ndi okosijeni ndi dzimbiri zidzachitika.Chitoliro chachitsulo chimafunika kuti chikhale ndi mphamvu zolimba kwambiri, kukana kwa kutukuta kwa okosijeni komanso kukhazikika kwa microstructure.
3. Machubu opopera othamanga kwambiri ndi mtundu wa chubu la boiler, lomwe ndi la gulu la chubu lachitsulo chosasokonekera.Njira yopangira ndi yofanana ndi chubu chosasunthika chapamwamba chowotcha chubu, koma pali zofunika kwambiri pagulu lazitsulo zomwe zimagwiritsidwa ntchito popanga chubu chachitsulo.Machubu opopera opopera kwambiri nthawi zambiri amagwiritsidwa ntchito pansi pa kutentha kwambiri komanso kupanikizika kwambiri.Chubu cha boiler choponderezedwa kwambiri chimagwiritsidwa ntchito kwambiri popanga chubu cha superheater, chubu chotenthetsera, chitoliro cha chubu, chitoliro chachikulu cha nthunzi ndi zina zambiri zopopera kwambiri komanso zopopera zopopera kwambiri.
4. Chifukwa chubu chowotchera chimagwira ntchito pansi pa kutentha kwakukulu ndi kupanikizika kwakukulu kwa nthawi yaitali, zinthu zidzakwawa, pulasitiki ndi kuuma kumachepa, kusintha kwa bungwe loyambirira, dzimbiri ndi zina zotero.Machubu achitsulo omwe amagwiritsidwa ntchito ngati boilers ayenera kukhala ndi:
(1) Mphamvu zokwanira zokhalitsa;
(2) Kukwanira kwa pulasitiki deformation mphamvu;
(3) Chizoloŵezi chochepa cha ukalamba ndi kuwonongeka kwa kutentha;
(4) High oxidation kukana, kukana malasha phulusa, kutentha kwambiri kukana dzimbiri gasi, nthunzi ndi nkhawa dzimbiri ntchito;
(5) Kukhazikika kwadongosolo kwadongosolo komanso ntchito yabwino.
Chitsulo cha chubu cha boiler choponderezedwa kwambiri ndi chitsulo cha carbon ndi pearlite, ferritic ndi austenitic zosapanga dzimbiri zosagwira kutentha.Pofuna kupititsa patsogolo kutentha kwa mayunitsi opangira mphamvu zotentha komanso kuchepetsa kugwiritsira ntchito mafuta, kupititsa patsogolo mphamvu zazikulu, kutentha kwakukulu (kutentha kwambiri, kuthamanga kwambiri) mphamvu zopangira magetsi (zoposa 1000MW) zimaperekedwa patsogolo padziko lapansi.Kuthamanga kwa nthunzi kunawonjezeka kufika 31.5 ~ 34.3MPa, kutentha kwa nthunzi yotentha kwambiri mpaka 595 ~ 650 ℃, kupititsa patsogolo kuthamanga kwapamwamba kwambiri, kotero kuti chubu lapamwamba la boiler limapereka zofunika kwambiri.Gulu latsopano lachitsulo linapangidwa kuti likwaniritse kufunikira kwa boiler yamagetsi yayikulu.
Njira yopangira machubu othamanga kwambiri, Gwiritsani ntchito gulu
Pakuti otsika ndi sing'anga kuthamanga kukatentha (ntchito kuthamanga zambiri zosaposa 5.88mpa, kutentha ntchito m'munsimu 450 ℃) Kutentha pamwamba chitoliro;Amagwiritsidwa ntchito poyatsira moto wothamanga kwambiri (kupanikizika kogwira ntchito nthawi zambiri pamwamba pa 9.8mpa, kutentha kwapakati pa 450 ℃ ~ 650 ℃) Kutentha pamwamba pa chitoliro, economizer, superheater, reheater, petrochemical industry chitoliro, etc.
Malinga ndi zikuchokera gulu zinthu akhoza kugawidwa mu 20G mkulu-anzanu kukatentha chubu, 12Cr1MoVG mkulu-anzanu kukatentha chubu, zitsulo kafukufuku 102 mkulu-anzanu kukatentha chubu, 15CrMoG mkulu-anzanu kukatentha kukatentha chubu, 5310 mkulu-anzanu kukatentha kukatentha chubu, 3087 chubu chopopera chocheperako komanso chapakatikati, chubu cha 40Cr chopopera kwambiri, chubu cha 1Cr5Mo chopopera kwambiri, chubu cha 42CrMo chopopera kwambiri.
Njira yopangira machubu othamanga kwambiri, Mafotokozedwe ndi mawonekedwe ake
(1) GB3087-2008 "Seamless Steel pipe for Low and medium pressure boiler" zopatsa.Kufotokozera kwa machubu achitsulo opangira ma boiler osiyanasiyana, ma diameter 10 ~ 426mm, mitundu 43 yonse.Pali mitundu 29 ya makulidwe a khoma kuchokera ku 1.5 mm mpaka 26mm.Komabe, makulidwe akunja ndi makulidwe a khoma la chitoliro cha nthunzi yotentha kwambiri, chitoliro chachikulu cha utsi, chitoliro chaching'ono cha utsi ndi chitoliro cha njerwa chomwe chimagwiritsidwa ntchito mu boiler ya locomotive zimanenedwa mwanjira ina.
(2) GB5310-2008 "Seamless Zitsulo chubu kwa High kuthamanga Boiler" otentha adagulung'undisa chitoliro m'mimba mwake 22 ~ 530mm, khoma makulidwe 20 ~ 70mm.Kuzizira kukokedwa (ozizira adagulung'undisa) chubu awiri 10 ~ 108mm, khoma makulidwe 2.0 ~ 13.0mm.
(3) GB3087-82 "Seamless zitsulo chubu kwa otsika ndi sing'anga kuthamanga boiler" ndi GB5310-95 "seamless zitsulo chubu kwa mkulu kuthamanga kukatentha" makonzedwe.Mawonekedwe abwino: ming'alu, kupindika, kupukuta, kupukuta, kupatukana ndi makwinya sikuloledwa pakatikati ndi kunja kwa chitoliro chachitsulo.Zolakwika izi ziyenera kuthetsedwa kwathunthu.Kuzama kwachilolezo sikuyenera kupitirira kupatuka koyipa kwa makulidwe a khoma, ndipo makulidwe enieni a khoma pachilolezo sikuyenera kukhala kochepa kuposa makulidwe ovomerezeka a khoma.
Nthawi yotumiza: May-23-2022