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   ; 電廠(chang)四大管道工廠(chang)化(hua)配管,四大管道配管

   ; 火(huo)電(dian)(dian)廠(chang)四大(da)管(guan)道工(gong)廠(chang)化配(pei)管(guan)專業生產(chan)廠(chang)家(jia),公司是合(he)金(jin)高壓合(he)金(jin)鋼管(guan)、合(he)金(jin)管(guan)件配(pei)套(tao)(tao)供應單位，為電(dian)(dian)力、石化、石油、天然氣、鍋(guo)爐氣輪機(ji)整套(tao)(tao)線服務，長(chang)期(qi)從事各類型火(huo)力發電(dian)(dian)廠(chang)合(he)金(jin)管(guan)道配(pei)套(tao)(tao)工(gong)作，同(tong)時(shi)承擔進口高壓合(he)金(jin)彎頭、合(he)金(jin)管(guan)件制造(zao)、合(he)金(jin)管(guan)道彎制服務，是儲(chu)備(bei)、經營、加工(gong)化一體的綜合(he)體。 儲(chu)備(bei)2萬噸管(guan)材鋼管(guan)儲(chu)備(bei)倉(cang)庫(ku)。我公司擁有了獨自(zi)的自(zi)主進出口權，市場已拓展到日(ri)本、德國、意大(da)利、西班牙、美國、瑞士、波蘭、阿根廷、韓國等國家(jia)。

   電廠四大管道(dao)配管詳細詳情(qing)：

   1、主蒸(zheng)汽管(guan)道材(cai)料選擇

    電(dian)力部有關部門電(dian)站管(guan)(guan)(guan)(guan)道(dao)管(guan)(guan)(guan)(guan)件規格化會(hui)議，提出電(dian)站主(zhu)(zhu)要(yao)汽(qi)水管(guan)(guan)(guan)(guan)道(dao)規格，其中300MW機組(zu)(zu)主(zhu)(zhu)蒸(zheng)汽(qi)系統(tong)主(zhu)(zhu)管(guan)(guan)(guan)(guan)推薦(jian)采用(yong)(yong)A335P22合(he)金(jin)管(guan)(guan)(guan)(guan)。此(ci)后國(guo)內(nei)300Mw機組(zu)(zu)工程大(da)多照(zhao)此(ci)選用(yong)(yong)，有關廠(chang)家也按A335P22合(he)金(jin)管(guan)(guan)(guan)(guan)道(dao)規格研制開發了配套管(guan)(guan)(guan)(guan)件。已投運(yun)的(de)300MW機組(zu)(zu)，如井岡山華能(neng)(neng)電(dian)廠(chang)、豐城電(dian)廠(chang)的(de)主(zhu)(zhu)蒸(zheng)汽(qi)管(guan)(guan)(guan)(guan)道(dao)、再(zai)熱(re)蒸(zheng)汽(qi)熱(re)段管(guan)(guan)(guan)(guan)道(dao)均使用(yong)(yong)A335P22合(he)金(jin)管(guan)(guan)(guan)(guan)。A335P91合(he)金(jin)管(guan)(guan)(guan)(guan)道(dao)屬(shu)改良型(xing)9Cr1Mo高(gao)(gao)強(qiang)度馬氏體耐熱(re)鋼。由于P91合(he)金(jin)鋼管(guan)(guan)(guan)(guan)具有高(gao)(gao)溫強(qiang)度高(gao)(gao)、高(gao)(gao)的(de)抗氧化性(xing)能(neng)(neng)和抗高(gao)(gao)溫蒸(zheng)汽(qi)腐蝕性(xing)能(neng)(neng)等特點，80年(nian)代已被(bei)英(ying)、美、德等國(guo)廣泛應(ying)用(yong)(yong)在電(dian)站設備上。我國(guo)從九十年(nian)開始(shi)，逐步使用(yong)(yong)A335P91作為電(dian)站主(zhu)(zhu)蒸(zheng)汽(qi)管(guan)(guan)(guan)(guan)道(dao)、再(zai)熱(re)蒸(zheng)汽(qi)熱(re)段管(guan)(guan)(guan)(guan)道(dao)的(de)材料。

   P91鋼(gang)(gang)材(cai)比P22強(qiang)度(du)(du)高(gao)，且其(qi)強(qiang)度(du)(du)隨溫(wen)度(du)(du)升高(gao)下(xia)降較少，在20℃時(shi)，P91合金(jin)三通(tong)抗拉強(qiang)度(du)(du)比P22合金(jin)三通(tong)高(gao)41.6％；在538℃時(shi)，P91鋼(gang)(gang)材(cai)的(de)許用(yong)(yong)(yong)應力卻(que)比P22鋼(gang)(gang)材(cai)高(gao)83.3％。正(zheng)是由于P91鋼(gang)(gang)材(cai)在高(gao)溫(wen)下(xia)具有(you)比P22鋼(gang)(gang)材(cai)高(gao)得(de)(de)多(duo)(duo)的(de)許用(yong)(yong)(yong)應力。使得(de)(de)其(qi)用(yong)(yong)(yong)作主蒸汽管(guan)(guan)道(dao)(dao)時(shi)壁厚(hou)(hou)比采(cai)用(yong)(yong)(yong)P22鋼(gang)(gang)材(cai)薄(bo)(bo)得(de)(de)多(duo)(duo)。這是P91鋼(gang)(gang)材(cai)在大機組上應用(yong)(yong)(yong)越(yue)來越(yue)廣泛的(de)主要原因主蒸汽管(guan)(guan)道(dao)(dao)采(cai)用(yong)(yong)(yong)P91合金(jin)管(guan)(guan)件(jian)(jian)與采(cai)用(yong)(yong)(yong)P22合金(jin)管(guan)(guan)件(jian)(jian)的(de)初(chu)步比較，主蒸汽管(guan)(guan)道(dao)(dao)采(cai)用(yong)(yong)(yong)P22材(cai)質(zhi)時(shi)，主管(guan)(guan)規(gui)格(ge)(ge)(ge)為(wei)Φ368×82，支(zhi)管(guan)(guan)規(gui)格(ge)(ge)(ge)為(wei)Φ273×62.23；采(cai)用(yong)(yong)(yong)P91材(cai)質(zhi)時(shi)，主管(guan)(guan)規(gui)格(ge)(ge)(ge)為(wei)Φ368.3×40，支(zhi)管(guan)(guan)規(gui)格(ge)(ge)(ge)為(wei)Φ273×30。對比可知(zhi)，主管(guan)(guan)道(dao)(dao)壁厚(hou)(hou)減薄(bo)(bo)了(le)42mm，減薄(bo)(bo)率為(wei)51.2％；支(zhi)管(guan)(guan)道(dao)(dao)壁厚(hou)(hou)減薄(bo)(bo)了(le)32.23mm，減薄(bo)(bo)率為(wei)51.8％。合金(jin)管(guan)(guan)道(dao)(dao)總(zong)重大大減少，管(guan)(guan)道(dao)(dao)總(zong)重比P91／P22=1／2.18。

   目前，隨市場價格的(de)(de)(de)波動，合金管(guan)材(cai)單位重(zhong)量價格比P91／P22約為1.4～1.95，由(you)于(yu)管(guan)道(dao)總重(zhong)減少的(de)(de)(de)數量超出了價格增長的(de)(de)(de)影響，因此，主蒸汽管(guan)道(dao)采用P91是經濟的(de)(de)(de)。另(ling)外(wai)，因管(guan)道(dao)壁(bi)厚較(jiao)薄，管(guan)道(dao)對設備接口的(de)(de)(de)推力(li)和(he)力(li)矩可以減小(xiao)。同時，由(you)于(yu)減輕了管(guan)道(dao)重(zhong)量，支(zhi)吊架荷重(zhong)相應減小(xiao)。不(bu)但(dan)節省支(zhi)吊架造價，相應的(de)(de)(de)管(guan)道(dao)安(an)裝(zhuang)費(fei)用、土建費(fei)用也會節省。

   2、再熱蒸汽熱段管道管材(cai)選擇

   再熱熱段(duan)管(guan)道(dao)(dao)屬(shu)于大(da)管(guan)徑薄(bo)(bo)壁(bi)(bi)管(guan)，如果采用(yong)(yong)P91合(he)(he)金鋼管(guan)，本就較薄(bo)(bo)的壁(bi)(bi)厚(hou)就會更薄(bo)(bo)。由于計(ji)算管(guan)壁(bi)(bi)太薄(bo)(bo)，從安全角度出發，壁(bi)(bi)厚(hou)的實際取值比(bi)(bi)計(ji)算值要大(da)許多，這樣一(yi)來，與P22進行綜(zong)合(he)(he)比(bi)(bi)較，采用(yong)(yong)P91合(he)(he)金管(guan)經濟性較差。再熱熱段(duan)管(guan)道(dao)(dao)采用(yong)(yong)P22合(he)(he)金管(guan)時(shi)，主管(guan)規(gui)格(ge)為(wei)Φ635×31，支管(guan)規(gui)格(ge)為(wei)Φ508×24.8；采用(yong)(yong)P91材質(zhi)時(shi)，主管(guan)規(gui)格(ge)為(wei)Φ727.96×21.03，支管(guan)規(gui)格(ge)為(wei)Φ632.97×17.98.對比(bi)(bi)可(ke)知，主管(guan)道(dao)(dao)壁(bi)(bi)厚(hou)減薄(bo)(bo)了(le)10mm，支管(guan)道(dao)(dao)壁(bi)(bi)厚(hou)減薄(bo)(bo)了(le)6.8mm，管(guan)道(dao)(dao)總重(zhong)變化不大(da)，管(guan)道(dao)(dao)總重(zhong)比(bi)(bi)P91／P22=1／1.39，遠大(da)于價格(ge)比(bi)(bi)，因此仍推(tui)薦采用(yong)(yong)P22管(guan)材。

   3、再熱(re)蒸汽冷段(duan)管(guan)道(dao)管(guan)材選擇(ze)

   原電力部有(you)關部門電站管(guan)(guan)道管(guan)(guan)件規(gui)格化(hua)會議提出，根據300MW機(ji)組使(shi)用的經驗，再熱蒸汽冷(leng)段(duan)采用A672B70CL32電熔(rong)焊(han)鋼(gang)(gang)(gang)管(guan)(guan)替代A106B無(wu)縫(feng)(feng)鋼(gang)(gang)(gang)管(guan)(guan)，同樣可滿足技術(shu)要(yao)求。冷(leng)段(duan)主管(guan)(guan)采用A672B70CL32有(you)縫(feng)(feng)鋼(gang)(gang)(gang)替代A106B無(wu)縫(feng)(feng)鋼(gang)(gang)(gang)管(guan)(guan)。有(you)縫(feng)(feng)焊(han)接(jie)鋼(gang)(gang)(gang)管(guan)(guan)比A106B無(wu)縫(feng)(feng)鋼(gang)(gang)(gang)管(guan)(guan)便宜(yi)很多(duo)，為無(wu)縫(feng)(feng)鋼(gang)(gang)(gang)管(guan)(guan)的1／3左右。有(you)縫(feng)(feng)焊(han)接(jie)鋼(gang)(gang)(gang)管(guan)(guan)的壁(bi)厚偏(pian)差小于無(wu)縫(feng)(feng)鋼(gang)(gang)(gang)管(guan)(guan)，其(qi)質量不(bu)亞于無(wu)縫(feng)(feng)鋼(gang)(gang)(gang)管(guan)(guan)。

  4、高壓(ya)給(gei)水(shui)管道管材選擇

    高壓給水管(guan)(guan)(guan)道(dao)通(tong)常使用St4518／Ⅲ管(guan)(guan)(guan)材(cai)，本(ben)工程優化為(wei)15NiCuMoNb5.主管(guan)(guan)(guan)道(dao)規(gui)格由Φ406.4×50改為(wei)Φ355.6×25，支(zhi)管(guan)(guan)(guan)道(dao)規(gui)格由Φ298．6×36改為(wei)Φ244.5×20.15NiCuMoNb5與St4518/Ⅲ的(de)彈性模數及線膨脹(zhang)系(xi)數十(shi)分相近，但15NiCuMoNb5的(de)許用應力遠(yuan)大(da)于(yu)St4518/Ⅲ，因此(ci)，高壓給水管(guan)(guan)(guan)道(dao)采(cai)用15NiCuMoNb5時(shi)，管(guan)(guan)(guan)道(dao)壁厚可(ke)以(yi)減薄50%，管(guan)(guan)(guan)道(dao)本(ben)身金(jin)(jin)屬及支(zhi)吊架材(cai)料用量可(ke)大(da)為(wei)節約，經濟上更合(he)(he)理，可(ke)以(yi)有效的(de)降低工程造價。因此(ci)高壓給水管(guan)(guan)(guan)道(dao)管(guan)(guan)(guan)材(cai)采(cai)用15NiCuMoNb5合(he)(he)金(jin)(jin)彎(wan)頭，WB36合(he)(he)金(jin)(jin)彎(wan)頭，WB36合(he)(he)金(jin)(jin)三通(tong)，WB36合(he)(he)金(jin)(jin)異(yi)徑管(guan)(guan)(guan)，15NiCuMoNb5合(he)(he)金(jin)(jin)三通(tong)。

   我(wo)公(gong)司提(ti)供(gong)電(dian)廠基(ji)建(jian)(jian)（含改擴建(jian)(jian)）工程所(suo)需的(de)各(ge)類管(guan)(guan)(guan)(guan)道(dao)(dao)管(guan)(guan)(guan)(guan)材(cai)、管(guan)(guan)(guan)(guan)件(jian)和工廠化加(jia)工配(pei)制(zhi)，即主(zhu)蒸汽管(guan)(guan)(guan)(guan)道(dao)(dao)、合金(jin)管(guan)(guan)(guan)(guan)件(jian)、再(zai)熱(re)蒸汽管(guan)(guan)(guan)(guan)道(dao)(dao)、合金(jin)管(guan)(guan)(guan)(guan)件(jian)（熱(re)段、冷段）、主(zhu)給水管(guan)(guan)(guan)(guan)道(dao)(dao)、管(guan)(guan)(guan)(guan)件(jian)、旁路系(xi)統等(deng)需用的(de)高溫高壓無(wu)縫鋼(gang)管(guan)(guan)(guan)(guan)。公(gong)司制(zhi)定了嚴格(ge)的(de)質量管(guan)(guan)(guan)(guan)理體系(xi)，各(ge)類管(guan)(guan)(guan)(guan)道(dao)(dao)材(cai)料的(de)提(ti)供(gong)嚴格(ge)執(zhi)行以美國(guo)(guo)asme、astm系(xi)列，德國(guo)(guo)din系(xi)列、歐(ou)洲en系(xi)列和國(guo)(guo)際(ji)gb系(xi)列等(deng)標準(zhun)為主(zhu)的(de)相關(guan)國(guo)(guo)際(ji)、國(guo)(guo)內標準(zhun)，所(suo)有產品(pin)的(de)文件(jian)資料齊全(quan)。 主(zhu)要(yao)爐內用管(guan)(guan)(guan)(guan)材(cai)質：ST45.8/iii、20G、A106b、15CrMoG、12Cr1MoVG、10CrMo910、12Cr2MoWWTib、T91、T92、Tp304H、Tp347H、super304h、T23、T24等(deng)。 基(ji)建(jian)(jian)用四大管(guan)(guan)(guan)(guan)道(dao)(dao)的(de)主(zhu)要(yao)材(cai)質：A335P92、A335P91、A335P22、A335P11、A672B70CL32、A691Gr2-1/4CrCL22、A106b、15NiCuMoNb5（WB36）等(deng)。