Indlela yokukhiqiza
1. Izinga lokushisa elijwayelekile leshubhu le-boiler lingaphansi kuka-450 ℃, ipayipi elifuywayo lenziwa ngokuyinhloko ngeNombolo 10, cha.20 carbon bonded steel ipayipi elishisayo eligoqiwe noma ipayipi elidonsa ngokubanda.
2. Amashubhu e-boiler ane-high-pressure avame ukusetshenziswa ngaphansi kokushisa okuphezulu nezimo ezicindezelayo.Ngaphansi kwesenzo sokushisa okuphezulu kwegesi ye-flue kanye nomhwamuko wamanzi, i-oxidation kanye nokugqwala kuzokwenzeka.Ipayipi lensimbi liyadingeka ukuze libe namandla ahlala isikhathi eside, ukumelana nokugqwala okuphezulu kwe-oxidation kanye nokuzinza okuhle kwe-microstructure.
3. Ishubhu likabhayela elinomfutho ophezulu liwuhlobo lweshubhu lokubhayela, liyingxenye yesigaba samashubhu ensimbi engenamthungo.Indlela yokukhiqiza iyafana neshubhu elingenamthungo likabhayela we-high pressure, kodwa kunezidingo eziqinile ebangeni lensimbi elisetshenziselwa ukwakha ishubhu lensimbi.Amashubhu e-boiler anengcindezi ephezulu avame ukusetshenziswa ngaphansi kokushisa okuphezulu nezimo zokucindezela okukhulu.Ishubhu elinomfutho ophakeme we-boiler lisetshenziselwa ikakhulukazi ukwenza ishubhu ye-superheater, ishubhu yokufudumeza kabusha, ipayipi lepayipi, ipayipi elikhulu lesitimu nokunye kwe-high pressure kanye ne-ultra high pressure boiler.
4. Ngenxa yokuthi i-boiler tube isebenza ngaphansi kokushisa okuphezulu nokucindezela okukhulu isikhathi eside, izinto zizokhasa, i-plasticity nokuqina kwehle, ukushintsha kwenhlangano yasekuqaleni, ukugqwala nokunye.Amashubhu ensimbi asetshenziswa njengama-boilers kufanele abe:
(1) Amandla anele ahlala isikhathi eside;
(2) Umthamo owanele wokuguqulwa kwepulasitiki;
(3) Ukuthambekela kokuguga okuncane kanye nokushisa okushisayo;
(4) Ukumelana ne-oxidation ephezulu, ukumelana nomlotha wamalahle, ukumelana nokushisa okuphezulu ekugqwaleni kwegesi yemvelo, umusi kanye nokusebenza kokugqwala kwengcindezi;
(5) Ukuzinza okuhle kwenhlangano nokusebenza okuhle kwenqubo.
Insimbi yeshubhu kabhayela womfutho ophezulu yinsimbi ye-carbon steel ne-pearlite, i-ferritic nensimbi engagqwali ekwazi ukumelana nokushisa.Ukuze kuthuthukiswe ukusebenza kahle okushisayo kwamayunithi aphehla amandla ashisayo futhi kuncishiswe ukusetshenziswa kukaphethiloli, ukuthuthukiswa komthamo omkhulu, ipharamitha ephezulu (ukushisa okuphezulu, umfutho ophakeme) amayunithi aphehla amandla ashisayo (ngaphezu kuka-1000MW) kubekwa kuqala emhlabeni.Umfutho we-steam ukhuphuke wafinyelela ku-31.5 ~ 34.3MPa, izinga lokushisa lomusi oshisa kakhulu lafika ku-595 ~ 650 ℃, ukuze kuthuthukiswe i-ultra-high pressure ebucayi, ngakho-ke ishubhu likabhayela lomfutho ophezulu libeka phambili izidingo eziphakeme.Ibanga elisha lensimbi lathuthukiswa ukuze lihlangabezane nesidingo sebhayela yesitshalo samandla epharamitha ephezulu.
Indlela yokukhiqiza ishubhu ye-boiler enengcindezi ephezulu,Sebenzisa ukuhlukanisa
Kubhayela wengcindezi ephansi naphakathi (ingcindezi yokusebenza ngokuvamile ayidluli ku-5.88mpa, izinga lokushisa elisebenzayo lingaphansi kuka-450 ℃) ipayipi elishisayo;Isetshenziselwa ubhayela onengcindezi ephezulu (ingcindezi yokusebenza ngokuvamile engaphezu kuka-9.8mpa, izinga lokushisa lokusebenza phakathi kuka-450 ℃ ~ 650 ℃) ipayipi elingaphezulu lokushisa, i-economizer, i-superheater, i-reheater, ipayipi lemboni ye-petrochemical, njll.
Ngokusho kokwakhiwa kwezigaba zezinto ezibonakalayo zingahlukaniswa zibe yi-20G high-pressure boiler tube, 12Cr1MoVG high-pressure boiler tube, ucwaningo lwensimbi 102 high-pressure boiler tube, 15CrMoG high-pressure boiler boiler tube, 5310 high-pressure boiler boiler tube, 3087 ishubhu kabhayela enengcindezi ephansi naphakathi, 40Cr high-pressure boiler tube, 1Cr5Mo high-pressure boiler tube, 42CrMo high-pressure boiler tube.
Indlela yokukhiqiza ishubhu ye-boiler enengcindezi ephezulu, Ukucaciswa kanye nekhwalithi yokubukeka
(1) GB3087-2008 izinhlinzeko ze-"Seamless Steel pipe for Low and medium pressure boiler" izinhlinzeko.Imininingwane yamashubhu ensimbi yama-boilers ahlukahlukene wesakhiwo, amadayamitha ayi-10 ~ 426mm, izinhlobo ezingama-43 sezizonke.Kunezinhlobo ezingama-29 zokujiya kodonga kusuka ku-1.5 mm kuya ku-26mm.Kodwa-ke, ububanzi obungaphandle nobukhulu bodonga lwepayipi lesitimu esishisa kakhulu, ipayipi elikhulu lentuthu, ipayipi elincane lentuthu kanye nepayipi lezitini le-arch elisetshenziswa kubhayela wesitimela kubalulwe ngenye indlela.
(2) GB5310-2008 "I-Seamless Steel Tube ye-High pressure Boiler" ububanzi bepayipi eligoqiwe elishisayo 22 ~ 530mm, ukujiya kodonga 20 ~ 70mm.Abandayo adonswe (okubandayo rolling) tube ububanzi 10 ~ 108mm, udonga ukujiya 2.0 ~ 13.0mm.
(3) I-GB3087-82 "Ithubhu yensimbi engenamthungo ye-boiler yokucindezela okuphansi nokuphakathi" kanye ne-GB5310-95 "ithubhu lensimbi engenamthungo le-boiler yomfutho ophezulu".Ikhwalithi yokubukeka: ukuqhekeka, ukugoqa, ukugoqa, ukukhwabanisa, ukuhlukaniswa kanye nemibimbi akuvunyelwe endaweni yangaphakathi nangaphandle yepayipi yensimbi.Lezi zinkinga kufanele ziqedwe ngokuphelele.Ukujula kokususa akumele kudlule ukuchezuka okuyinegethivu kogqinsi oluvamile lodonga, futhi ukujiya kwangempela kodonga endaweni evulekile akumele kube ngaphansi kobukhulu obuncane obuvunyelwe bodonga.
Isikhathi sokuthumela: May-23-2022