Ububanzi besicelo kanye nezidingo zobuchwepheshe zamavalvu esiteshi samandla (IV)

Ububanzi besicelo kanye nezidingo zobuchwepheshe zamavalvu esiteshi samandla (IV)

Ukusetshenziswa kwe-valve kagesi, ukunciphisa umfutho wabasebenzi futhi kudingekile endaweni yokusebenza embi, i-valve kagesi iqukethe injini, ibhokisi legiya kanye nomzimba, ngokuvamile emsebenzini ovamile ngenxa yezinto ezifana nokudlidliza, izinga lokushisa, ukuguga ukuguga ngokuvamile amafutha ahlukahlukene. inkinga yokuvuza, ukuvuza kwebhokisi legiya ukungcoliswa kwemvelo okukhulu akugcini nje ngokuba nobungozi bokuphepha obuthile. Izifundo zezingozi zokuphepha ezibangelwa “ukugijima, ukugijima, ukuconsa nokuvuza” kwezinto zokusebenza nazo zihlale zinakwa emsebenzini wokuphatha imishini. Uwoyela wokuvuza webhokisi legiya, ngenxa yesakhiwo semishini, ukusetshenziswa kwemvelo, umsebenzi oqhubekayo nezinye izimo, ngokwesiko ngokushintshwa kwezingxenye, ngokushintshwa kwezinyathelo zokuvala uphawu.
Izimbangela nokuhlaziywa kokuvuza kwamafutha ebhokisini legiya le-valve kagesi
Ukusetshenziswa kwe-valve kagesi, ukunciphisa umfutho wabasebenzi futhi kudingekile endaweni yokusebenza embi, i-valve kagesi iqukethe injini, ibhokisi legiya kanye nomzimba, ngokuvamile emsebenzini ovamile ngenxa yezinto ezifana nokudlidliza, izinga lokushisa, ukuguga ukuguga ngokuvamile amafutha ahlukahlukene. inkinga yokuvuza, ukuvuza kwebhokisi legiya ukungcoliswa kwemvelo okukhulu akugcini nje ngokuba nobungozi bokuphepha obuthile. Izifundo zezingozi zokuphepha ezibangelwa “ukugijima, ukugijima, ukuconsa nokuvuza” kwezinto zokusebenza nazo zihlale zinakwa emsebenzini wokuphatha imishini. Ngenxa yomkhawulo wesakhiwo semishini, indawo yokusebenza kanye nezimo zokusebenza eziqhubekayo, ukuvuza kukawoyela kwebhokisi legiya kunzima ukushesha futhi kusebenze kahle ezixazululweni zendabuko zokushintsha izingxenye nokubeka uphawu.
Umthamo ophelele ofakiwe we-Huaneng Power Plant ngu-2060MW, futhi izimo zokunweba zamayunithi angu-2 × 1000MW abekelwe isigaba sesithathu. Iyunithi ye-2×350MW yephrojekthi yesigaba sokuqala iyunithi ethunyelwa ngaphandle eklanywe ngokuhlanganyela yi-China namazwe angaphandle. Ukukhethwa kwemishini eyinhloko sekuthuthukisiwe, ukuhlelwa kuhlangene, iyunithi inomnotho ophezulu, futhi umsebenzi wokuvikela uphelele. Kuyimboni yesimanje yamandla ashisayo enezinga eliphezulu lokuzishintshanisa e-China. Isigaba sesibili salo msebenzi ngamayunithi angu-2×680MW afuywa ngamalahle abaluleke kakhulu, ukwakhiwa kanyekanye kwethuluzi lokususa igesi yamanzi olwandle.
Ikesi lensimu lesicelo sezinto ze-Carbon nanopolymer ekwelapheni ukuvuza kwe-giya casing evela ku-Soley Industry
Inqubo yokusebenza endaweni imi kanje:
I-1, hlanza izingxenye zokuvuza kwamafutha, sula ezingxenyeni ezivuzayo, ukuze ibonise umbala oyinhloko wensimbi, izingxenye zebhawodi nazo ziwukwelashwa okungaphezulu;
2, ukuhlanza, izidingo zokwelashwa kwendawo zihlanzekile, zomile, ziqinile, ziqinile;
3. Hlanganisa okokusebenza kwe-SD2240 ukuze uvale izingxenye ezivuzayo ebangeni elincane kuze kungavuzi;
4. Ngemuva kokuthi ingaphezulu lempahla selashiwe, impahla imbozwa nge-SD7111C futhi. Impahla iyelapheka futhi iyalungiswa.
Ububanzi bokufaka isicelo kanye nezidingo zobuchwepheshe zevalvu yesiteshi samandla (iv) Izinga lokushisa eliphezulu lesevisi lezingxenye ezithwele zegobolondo alicabangi ukuchezuka okuvunyelwe kwezinga lokushisa kukabhayela ngesikhathi sokusebenza okujwayelekile, futhi inani lokuchezuka lizohambisana nezinhlinzeko ze-SDGJ6. -1990. Kufanele kuqashelwe ukwenza i-graphitization yezinto zensimbi ngaphansi kwalezi zimo ezilandelayo: Izinsimbi ze-Chromium-aluminium (kufika ku-0.6%) zisetshenziswa isikhathi eside ngaphezu kuka-525 ℃. Umzimba we-valve kanye nokuxhunywa kwepayipi ukushisela i-field weld, i-groove yayo yokugcina icutshungulwa ngaphambilini ngumnyango wokukhiqiza ama-valve. Indlela yokushisela izinqe yokuphela kwesiteshi somzimba we-valve kufanele kube ukushisela i-arc yesandla, i-hydrogen arc welding kanye ne-hand arc welding noma ezinye izindlela zokushisela ezifanele ukuhlolwa kwenqubo.
Ukuxhuma: Ububanzi besicelo kanye nezidingo zobuchwepheshe zamavalvu esiteshi samandla (III)
Isithasiselo c
(Isithasiselo Esijwayelekile)
Ukushisa okuphezulu kwesevisi yezinto ezithwala igobolondo
C.1 Lapho ukhetha izinto zokuthwala izingxenye zegobolondo, izinga lokushisa eliphezulu lesevisi akumele lidlule izihlinzeko eziseThebula C.1.
Ithebula C.1 Izinga lokushisa eliphezulu lesevisi yezinto ezithwala igobolondo
C.2 Izinga lokushisa eliphezulu lokusebenza lezingxenye ezithwalayo zegobolondo alicabangi ukuchezuka kwezinga lokushisa elivumelekile ngesikhathi sokusebenza okujwayelekile kwebhayili, futhi inani lokuchezuka lizohambisana nezinhlinzeko ze-SDGJ6-1990.
C.3 I-graphitization engenzeka yezinto zensimbi kufanele kuqashelwe kulezi zimo ezilandelayo:
A) Insimbi ye-Carbon isetshenziswa isikhathi eside ngaphezu kwe-425 ℃.
B) Insimbi ye-carbon aluminium isetshenziswa isikhathi eside cishe ku-470 ℃.
C) Insimbi ye-Chromium-aluminium (equkethe ngaphansi kuka-0.6%) isetshenziswa isikhathi eside cishe ku-525℃.
C.4 Kufanele kuqashelwe ukuthi kungenzeka kube ne-peroxidation (i-oxidation yesikhumba) kulezi zimo ezilandelayo:
A) Insimbi engu-1Cr-0.5Mo, insimbi engu-1.25Cr-0.5Mo, insimbi engu-2.25Cr-1Mo kanye nensimbi engu-3Cr-1Mo ngaphezu kuka-565℃;
B) 5Cr-0.5Mo insimbi ngaphezu 595 ℃.
Isithasiselo D
(Isithasiselo Esinolwazi)
Impahla enobuso obuqinile nobulukhuni bendawo yokuvala ivalvu
Ithebula D.1 linikeza imihlahlandlela yabaklami ekukhetheni izinto ezingaphandle kanye nobulukhuni obuphezulu bezindawo zokuvala amavalvu.
Ithebula D.1 Impahla eqinile kanye nomtapo wolwazi oqinile wendawo yokuvala ama-valve
Isithasiselo E
(Isithasiselo Esinolwazi)
I-Butt weld groove uhlobo lwesiphetho sesiteshi somzimba we-valve
E.1 Uhlobo lwe-Butt weld groove lwamavalvu ahlukahlukene anogqinsi lwepayipi lezinqe δ20mm luboniswa kuMfanekiso E.1
I-E.2 butt weld groove yamavalvu anogqinsi lwamapayipi angu-20mm ≤δ≤40mm iboniswa kumfanekiso e. 2
E.3 Uhlobo lwe-Butt weld groove lwamavalvu ahlukahlukene anogqinsi lwepayipi lezinqe δ40mm luboniswa kuMfanekiso E.3
E.4 Ubukhulu buka-D1, D2 kanye no-D3 ku-Figure E1, Umfanekiso E.2 kanye no-Figure E.3 abunikiwe, obunqunywa umdwebo wokuklama. I-D1 ilingana nosayizi oyisisekelo we-diameter yangaphakathi yepayipi, futhi D: ingabalwa kusuka kufomula elandelayo:
Uhlobo:
Ngaphandle kobubanzi bepayipi le-DW-1:
A – Inani elengeziwe liyonqunywa umklami ngokubhekisela kuThebula E.1.
Ithebula E.1 Inani elengeziwe le-butt weld groove dimension D2
E.5 Uma ukuxhuma phakathi kwe-valve yomzimba nepayipi kuwukushisela endaweni, i-groove ekugcineni kufanele icutshungulwe kusengaphambili umnyango wokukhiqiza ama-valve.
E.6 Indlela yokushisela ye-butt weld ye-valve body end kufanele isebenzise i-hand arc welding, i-hydrogen arc welding kanye ne-hand arc welding noma enye indlela yokushisela efanelekayo ngokuhlolwa kwenqubo.
Inothi 1: Uma i-Lo≥1.5δ, i-engeli ingashintshwa kokuthi Lo=1.5δ njengoba kuboniswe ku-45° slope.
Qaphela 2: I-cast steel valve body groove enobubanzi obuncane DN≥150mm izoba L1=40mm ukuze ihlolwe nge-radiographic, L1=12mm kwezinye izimo
I-FIG. E.1 Uhlobo lwemisele emise okwe-V
Inothi 1: Uma i-Lo≥1.5δ, i-engeli ingashintshwa kokuthi Lo=1.5δ njengoba kuboniswe ku-45° slope.
Qaphela 2: I-cast steel valve body groove enobubanzi obuncane DN≥150mm izoba L1=40mm ukuze ihlolwe nge-radiographic, L1=12mm kwezinye izimo
I-FIG. E.2 Uhlobo lwemisele emise okwe-U
Umfanekiso E.3 U(1) uhlobo lwe-groove
Isithasiselo F
(Isithasiselo Esinolwazi)
I-metal nameplate
F.1 Ithebula F.1 libonisa okuqukethwe ama-nameplates ensimbi kumavalvu embulunga, amavalvu okuhlola, amavalvu esango, ama-throttle valve namapulaki.
Ithebula F.1 Ama-nameplates ensimbi amavalvu embulunga, amavalvu okuhlola, amavalvu esango, ama-throttle valves, amapulaki valve, njll.
F.2 Ithebula F.2 libonisa okuqukethwe yi-nameplate yensimbi yesilawuli
Ithebula F.2 Okuqukethwe kwensimbi yesilawuli
F.3 Ithebula F.3 libonisa okuqukethwe kwe-nameplate yensimbi yevalvu yokuphepha
Ithebula F.3 I-metal nameplate yevalvu yokuphepha
F.4 Ithebula F.4 libonisa okuqukethwe kwe-nameplate yensimbi yevalvu yokunciphisa ingcindezi
Ithebula F.4 I-metal nameplate yevalvu yokunciphisa ingcindezi
F.5 Ithebula F.5 libonisa i-nameplate yensimbi yezinga lokushisa ne-valve yokunciphisa ukucindezela.
Ithebula F.5 I-metal nameplate yezinga lokushisa ne-valve yokunciphisa ingcindezi