Ukukhethwa okulungile kwamapayipi ensimbi angenamthungo empeleni kunolwazi kakhulu!

Yiziphi izidingo zokukhetha amapayipi ensimbi angenamthungo okuthutha uketshezi oluvame ukusetshenziswa embonini yethu yezinqubo? Bheka isifinyezo sabasebenzi bethu bamapayipi okucindezela:

Amapayipi ensimbi angenamthungo amapayipi ensimbi ngaphandle kokushisela akhiwe ngezindlela zokwelapha ezishisayo njengokubhoboza nokuginqika okushisayo.

Uma kunesidingo, ipayipi yokwelapha eshisayo ingaqhubeka nokubanda-idonseleka esimweni esidingekayo, ubukhulu kanye nokusebenza. Njengamanje, amapayipi ensimbi angenamthungo (DN15-600) angamapayipi asetshenziswa kakhulu emishinini yokukhiqiza i-petrochemical.

(一) Ipayipi lensimbi ye-Carbon engenamthungo

Ibanga Lensimbi Yezinto ezibonakalayo :10#,20#,09MnV,16Mnngezinhlobo ezi-4

Okujwayelekile:

I-GB8163 Ipayipi Lensimbi Engenamthungo Yesevisi Yamanzi

I-GB/T9711 Izimboni zikaphethiloli negesi yemvelo—Ipayipi lensimbi lezinhlelo zokuthutha zamapayipi

I-GB6479 High-pressure steel ipayipi elingenamthungo lemishini kamanyolo”

I-GB9948 Amashubhu ensimbi angenamthungo wokuqhekeka kwe-petroleum

GB3087 Ipayipi lensimbi engenamthungo kubhayela wengcindezi ephansi naphakathi

I-GB/T5310 Amashubhu ensimbi angenamthungo namapayipi kabhayela onengcindezi ephezulu

I-GB/T8163:Ibanga Lensimbi Yezinto ezibonakalayo: 10#, 20#, Q345, njll.

Ububanzi bokusebenza: uwoyela, uwoyela negesi kanye nemidiya yomphakathi okushisa kwedizayini yayo kungaphansi kuka-350 ℃ futhi ingcindezi ingaphansi kuka-10MPa.

I-GB6479: Ibanga lensimbi yezinto ezibonakalayo: 10 #, 20G, 16Mn, njll.

Ububanzi besicelo: uwoyela negesi enezinga lokushisa lokuklama -40～400 ℃ kanye nokucindezela komklamo 10.0～32.0MPa.

I-GB9948:

Material steel Ibanga: 10 #, 20 #, njll.

Ububanzi bokusebenza: izikhathi lapho ipayipi lensimbi le-GB/T8163 lingafaneleki.

I-GB3087:

Material steel Ibanga: 10 #, 20 #, njll.

Ububanzi bokufaka isicelo: isitimu esishisa kakhulu namanzi abilayo kuma-boilers aphansi naphakathi.

I-GB5310:

Material steel Ibanga: 20G njll.

Ububanzi bokusebenza: i-steam medium eshisa kakhulu ye-boiler yokucindezela okuphezulu

Ukuhlola: Ngokuvamile amapayipi ensimbi okuthutha uketshezi kufanele ahlaziywe ukwakheka kwamakhemikhali, ukuhlolwa okuqinile, ukuhlolwa kokucaba kanye nokuhlolwa kwe-hydraulic. I-GB5310, GB6479, kanye ne-GB9948 amapayipi ensimbi ajwayelekile, ngaphezu kokuhlolwa okufanele kwenziwe kumapayipi ensimbi okuthutha uketshezi, ukuhlolwa kokuvutha kanye nokuhlolwa komthelela nakho kuyadingeka; izidingo zokuhlolwa kokukhiqiza kulawa mapayipi ensimbi amathathu aqinile. Izinga le-GB6479 liphinde lenze izidingo ezikhethekile zokuqina komthelela wezinga lokushisa eliphansi lento. Ngaphezu kwezidingo ezijwayelekile zokuhlolwa kwamapayipi ensimbi okuthutha uketshezi, amapayipi ensimbi wezinga le-GB3087 nawo adinga ukuhlolwa kokugoba okubandayo. Amapayipi ensimbi ajwayelekile e-GB/T8163, ngaphezu kwezidingo ezijwayelekile zokuhlola amapayipi ensimbi ezokuthutha uketshezi, ngokuvumelana nesivumelwano kudinga ukuhlolwa kokunwetshwa kanye nokuhlolwa kokugoba okubandayo. Izidingo zokukhiqiza zalezi zinhlobo ezimbili zamashubhu aziqinile njengezinhlobo ezintathu zokuqala.

Ukukhiqiza: I-GB/T8163 kanye ne-GB3087 amapayipi ensimbi ajwayelekile ancibilikiswa eziko elivulekile noma isiguquli, futhi ukungcola kwawo kanye nokukhubazeka kwangaphakathi kukhulu uma kuqhathaniswa. I-GB9948 isebenzisa kakhulu ukuncibilikiswa kwesithando somlilo sikagesi. Iningi labo lijoyine inqubo yokucwenga ngaphandle kwesithando somlilo, futhi ukwakheka kanye namaphutha angaphakathi kuncane kakhulu. Amazinga e-GB6479 kanye ne-GB5310 ngokwawo abeka izimfuneko zokucwengisiswa ngaphandle kwesithando somlilo, ngokwakhiwa kokungcola okuncane kanye namaphutha angaphakathi, kanye nekhwalithi ephezulu kakhulu yezinto ezibonakalayo.

Ukukhethwa: Ngokuvamile, ipayipi lensimbi elijwayelekile le-GB/T8163 lifanele uwoyela, uwoyela negesi kanye nemidiya yomphakathi enezinga lokushisa lokuklama elingaphansi kuka-350 ° C nokucindezela okungaphansi kuka-10.0MPa; ku-oyela, i-oyela ne-gas media, lapho izinga lokushisa lokuklama lidlula i-350 ° C Noma uma ingcindezi inkulu kune-10.0MPa, i-GB9948 noma i-GB6479 amapayipi ensimbi ajwayelekile kufanele asetshenziswe; kumapayipi asebenza nge-hydrogen, noma amapayipi asebenza ezindaweni ezithandwa ukugqwala kwengcindezi, amazinga e-GB9948 noma e-GB6479 nawo kufanele asetshenziswe. Wonke amapayipi ensimbi ekhabhoni asetshenziswa emazingeni okushisa aphansi (ngaphansi kuka -20°C) kufanele asebenzise indinganiso ye-GB6479, futhi yiyo kuphela ecacisa izidingo zokuqina komthelela wezinga lokushisa eliphansi wento. Izindinganiso ze-GB3087 kanye ne-GB5310 ziyizindinganiso ezibekwe ngokuqondile kumapayipi ensimbi okubhayela. “Imithetho Yokulawula Ukuphepha Kwebhoyili” igcizelela ukuthi wonke amapayipi axhunywe kubhayela ayingxenye yomkhakha wokugadwa, futhi ukusetshenziswa kwezinto kanye namazinga kufanele kuhambisane nezidingo “zeMithetho Yokulawula Ukuphepha Kwebhoyili”. Ngakho-ke, asetshenziswa kuma-boilers, iziteshi zikagesi, ukushisa kanye nezindawo zokukhiqiza ze-petrochemical. Wonke amapayipi esitimu omphakathi (ahlinzekwa yisistimu) kufanele asebenzise amazinga e-GB3087 noma e-GB5310. Kuyaphawuleka ukuthi intengo yamapayipi ensimbi anezinga elihle lekhwalithi yepayipi yensimbi iphakeme kakhulu. Isibonelo, intengo ye-GB9948 icishe ibe yi-1/5 ephakeme kunentengo yezinto zokwakha ze-GB8163. Ngakho-ke, lapho ukhetha izindinganiso zezinto ezibonakalayo zamapayipi ensimbi, ukucatshangelwa okuphelele kufanele kunikezwe izimo zokusetshenziswa, okumele kube okuthembekile futhi kube ukonga. Kufanele futhi kuqashelwe ukuthi amapayipi ensimbi ngokuhambisana namazinga e-GB/T20801 kanye ne-TSGD0001, GB3087 kanye ne-GB8163 ngeke asetshenziselwe amapayipi e-GC1 (ngaphandle uma elinye ngalinye liyi-ultrasonic, ikhwalithi ayikho ngaphansi kwe-L2.5, futhi ingaba esetshenziselwa i-GC1 enengcindezi yokuklama engenkulu kunepayipi elingu-4.0Mpa).

(二)Ipayipi le-alloy eliphansi elingenamthungo lensimbi

Emishinini yokukhiqiza ye-petrochemical, insimbi evame ukusetshenziswa i-chromium-molybdenum kanye ne-chromium-molybdenum-vanadium steel ipayipi elingenamthungo amazinga angu-GB9948 “ipayipi lensimbi elingenamthungo lokuqhekeka kwe-petroleum” GB6479 “Ipayipi lensimbi elingenamthungo elinomfutho omkhulu wezisetshenziswa zikamanyolo” GB/T5310 “Ingenamthungo ipayipi lensimbi le-boiler yokucindezela okuphezulu》I-GB9948 iqukethe amamaki ensimbi e-chromium-molybdenum: 12CrMo, 15CrMo, 1Cr2Mo, 1Cr5Mo, njll. Amabanga wensimbi ye-chromium-molybdenum afakwe ku-GB6479: 12CrMo, 15CrMo, 1Cr5Modenum 5Modenum, njll insimbi ye-lybdenum vanadium amabanga wezinto ezibonakalayo: 15MoG, 20MoG, 12CrMoG, 15CrMoG, 12Cr2MoG, 12Cr1MoVG, njll. Phakathi kwawo, esetshenziswa kakhulu yi-GB9948, bheka ngenhla ngezimo zokukhetha

（三）Ipayipi lensimbi engenamthungo

Izindinganiso zamapayipi ensimbi engenamthungo asetshenziswa ngokuvamile yilezi:

Kunamazinga amahlanu: GB/T14976, GB13296, GB9948, GB6479, kanye ne-GB5310. Phakathi kwawo, yizigaba ezimbili kuphela noma ezintathu zensimbi engagqwali abalwe emazingeni amathathu okugcina, futhi awawona amamaki ezinto ezisetshenziswa kakhulu.

Ngakho-ke, lapho amazinga epayipi lensimbi engenamthungo esetshenziswa kwezobunjiniyela, amazinga e-GB/T14976 kanye ne-GB13296 asetshenziswa ngokuyisisekelo.

I-GB/T14976 “Ipayipi lensimbi engenamthungo yokuthutha uketshezi”:

Amabanga wezinto ezibonakalayo: 304, 304L nezinye izinhlobo eziyi-19 zilungele ukuthuthwa okujwayelekile koketshezi.

I-GB13296 “Amashubhu ensimbi engenamthungo angenamthungo wamabhayela nezishintshisi zokushisa”:

Amamaki ezinto ezibonakalayo: 304, 304L nezinye izinhlobo ezingama-25.

Phakathi kwazo, i-ultra-low-carbon stainless steel (304L, 316L) inokumelana nokugqwala okuhle kakhulu. Ngaphansi kwezimo ezithile, ingathatha indawo yensimbi engagqwali ezinzile (321, 347) yokumelana nokugqwala kwabezindaba; Insimbi engagqwali ye-ultra-low-carbon inezakhiwo ezisebenza ngokuphansi ezisezingeni eliphezulu, ngokuvamile isetshenziswa Kuphela emazingeni okushisa angaphansi kuka-525℃; insimbi engagqwali eqinile ye-austenitic inokubili ukumelana nokugqwala okuhle kanye nezakhiwo zomshini wokushisa okuphezulu, kepha i-Ti in 321 ifakwa i-oxidized kalula futhi ilahleke ngesikhathi sokushisela, Ngaleyo ndlela yehlisa ukusebenza kwayo okulwa nokugqwala, intengo yayo iphezulu uma kuqhathaniswa, lolu hlobo lwempahla luvame ukusetshenziswa ezindaweni eziningi. izikhathi ezibalulekile, i-304, i-316 inokusebenza okujwayelekile kokulwa nokugqwala, intengo ishibhile, ngakho-ke isetshenziswa kabanzi.