Umda wesicelo kunye neemfuno zobugcisa zeevalvu zesikhululo samandla (IV)

Umda wesicelo kunye neemfuno zobugcisa zeevalvu zesikhululo samandla (IV)

Ukusetyenziswa kwevalve yombane, kukunciphisa ubungakanani bomsebenzi wabasebenzi kwaye kuyimfuneko kwindawo yokusebenza embi, ivalve yombane inemoto, ibhokisi yegiya kunye nomzimba, ngokuqhelekileyo emsebenzini oqhelekileyo ngenxa yezinto ezifana nokungcangcazela, ubushushu, ukutywina ukuguga rhoqo ezahlukeneyo ioli. ingxaki yokuvuza, ukuvuza kwebhokisi yegiya kungcoliseko olumandla lwemekobume hayi kuphela kukho ingozi enokwenzeka yokhuseleko. Izifundo zengozi zokhuseleko ezibangelwa "ukuqhuba, ukugijima, ukuvuza kunye nokuvuza" kwezixhobo nazo zihlala zinikwa ingqalelo kumsebenzi wokulawula izixhobo. Ioyile yokuvuza kwebhokisi yegiya, ngenxa yesakhiwo sezixhobo, ukusetyenziswa kwendalo, umsebenzi oqhubekayo kunye nezinye iimeko, kwindawo yesiko kunye nokutshintshwa kwamalungu, kunye nokutshintshwa kwamanyathelo okutywinwa.
Izizathu kunye nohlalutyo lokuvuza kweoyile kwibhokisi yegiya yevalvu yombane
Ukusetyenziswa kwevalve yombane, kukunciphisa ubungakanani bomsebenzi wabasebenzi kwaye kuyimfuneko kwindawo yokusebenza embi, ivalve yombane inemoto, ibhokisi yegiya kunye nomzimba, ngokuqhelekileyo emsebenzini oqhelekileyo ngenxa yezinto ezinjengokungcangcazela, ubushushu, ukutywina ukuguga rhoqo ezahlukeneyo zeoyile. ingxaki yokuvuza, ukuvuza kwebhokisi yegiya kungcoliseko olumandla lwemekobume hayi kuphela kukho ingozi enokwenzeka yokhuseleko. Izifundo zengozi zokhuseleko ezibangelwa "ukuqhuba, ukugijima, ukuvuza kunye nokuvuza" kwezixhobo nazo zihlala zinikwa ingqalelo kumsebenzi wokulawula izixhobo. Ngenxa yokuthintelwa kwesakhiwo sezixhobo, indawo yokusebenza kunye neemeko zokusebenza eziqhubekayo, ukuvuza kweoyile yebhokisi yegiya kunzima ukukhawuleza kwaye kusebenze kwizisombululo zemveli zokutshintsha iindawo kunye nokutywinwa.
Umthamo ofakiweyo opheleleyo we-Huaneng Power Plant yi-2060MW, kwaye iimeko zokwandiswa kweeyunithi ze-2 × 1000MW zigcinwe kwisigaba sesithathu. Iyunithi ye-2×350MW yeprojekthi yesigaba sokuqala yiyunithi ethengwe kumazwe angaphandle eyilwe ngokudibeneyo yi-China kunye namazwe angaphandle. Ukukhethwa kwezixhobo eziphambili kuphambili, ilungiselelo lihambelana, iyunithi inoqoqosho oluphezulu, kwaye umsebenzi wokukhusela uphelele. Liziko langoku lamandla obushushu elinenqanaba eliphezulu lokuzisebenzela eTshayina. Inqanaba lesibini leprojekthi yi-2×680MW yasekhaya esetyenziswa kakhulu ngamalahle, ulwakhiwo ngaxeshanye lwesixhobo sokususa irhasi yamanzi olwandle.
Ityala lesicelo sendawo yezixhobo zeCarbon nanopolymer ekunyangeni ukuvuza kwebhokisi yegiya kwiSoley Industry
Inkqubo yokusebenza kwindawo ilandelayo:
I-1, coca iindawo zokuvuza kweoyile, ipolisha kwindawo evuzayo, ukuze ibonise umbala osisiseko wesinyithi, iinxalenye zebholiti nazo zikwangunyango lomphezulu;
2, ukucoca, iimfuno zonyango lomphezulu zicocekile, zomile, ziqinile, zirhabaxa;
3. Hlanganisa imathiriyeli ye-SD2240 ukutywina iindawo ezivuzayo kuluhlu oluncinci de kungabikho kuvuza;
4. Emva kokuba ubuso bezinto ziphilisiwe, izinto zihlanganiswe nge-SD7111C kwakhona. Izinto eziphathekayo ziyaphiliswa kwaye zilungiswe.
Umda wesicelo kunye neemfuno zobugcisa zevalvu yesikhululo samandla (iv) Ubuninzi benkonzo yobushushu beendawo ezithwele iqokobhe aliqwalaseli ukutenxa okuvumelekileyo kwebhoyila ngexesha lokusebenza kwesiqhelo, kwaye ixabiso lokutenxa liya kuhambelana namalungiselelo e-SDGJ6. -1990. Ingqalelo kufuneka ihlawulwe kwi-graphitization yezinto zetsimbi phantsi kwezi meko zilandelayo: I-Chromium-aluminium steels (ukuya kuthi ga kwi-0.6%) isetyenziswe ixesha elide ngaphezu kwe-525 ℃. Umzimba wevalve kunye ne-weld yokudibanisa umbhobho yi-weld field, i-groove yayo yokugqibela iqhutywe kwangaphambili lisebe lokuvelisa i-valve. Indlela ye-butt ye-welding ye-valve ye-welding body end kufuneka ibe yi-welding ye-arc yesandla, i-welding ye-arc ye-hydrogen kunye ne-welding ye-arc yesandla okanye ezinye iindlela ze-welding ezifanelekileyo kuvavanyo lwenkqubo.
Uqhagamshelo: Umda wesicelo kunye neemfuno zobugcisa zeevalvu zesikhululo samandla (III)
Isihlomelo c
(Isihlomelo esiqhelekileyo)
Ubushushu benkonzo enkulu yezinto ezithwala iqokobhe
C.1 Xa ukhetha izinto zokuthwala iinxalenye zeqokobhe, ubushushu benkonzo ephezulu abuyi kudlula izibonelelo kwiThebhile C.1.
Itheyibhile C.1 Ubuninzi benkonzo yobushushu besixhobo sokuthwala iqokobhe
C.2 Ubushushu obuphezulu bokusebenza kweendawo ezithwele igobolondo ayicingi ukuphambuka kweqondo lokushisa elivumelekileyo ngexesha lokusebenza ngokuqhelekileyo kwebhoyili, kwaye ixabiso lokuphambuka liya kuhambelana nemimiselo ye-SDGJ6-1990.
C.3 I-graphitization enokwenzeka yemathiriyeli yesinyithi kufuneka iqatshelwe kwezi meko zilandelayo:
A) Intsimbi yeCarbon isetyenziswa ixesha elide ngaphezu kwe425℃.
B) Intsimbi ye-aluminiyam yeCarbon isetyenziswa ixesha elide malunga ne-470℃.
C) Intsimbi ye-Chromium-aluminium (equlethe ngaphantsi kwe-0.6%) isetyenziselwa ixesha elide malunga ne-525 ℃.
C.4 Ingqalelo kufuneka ihlawulwe kwi-peroxidation enokwenzeka (i-oxidation yesikhumba) kwezi meko zilandelayo:
A) 1Cr-0.5Mo intsimbi, 1.25Cr-0.5Mo intsimbi, 2.25Cr-1Mo intsimbi kunye 3Cr-1Mo intsimbi ngaphezu 565℃;
B) 5Cr-0.5Mo intsimbi ngaphezu 595℃.
IsiHlomelo D
(Isihlomelo esinolwazi)
Isixhobo esiqinileyo kunye nokuqina komphezulu wokutywina wevalvu
Itheyibhile D.1 ibonelela ngezikhokelo zabayili ekukhethweni kwemathiriyeli yokujonga phezulu kunye nobulukhuni bokuvela kwimigangatho yokutywina ivalvu.
ITheyibhuli D.1 Imathiriyeli eqinileyo kunye nethala leencwadi eliqinileyo kwindawo yokutywina ivalvu
IsiHlomelo E
(Isihlomelo esinolwazi)
Butt weld groove uhlobo lomjelo wevalvu womzimba ekupheleni
E.1 Udidi lwe-butt weld groove yeevalvu ezahlukeneyo ezinobunzima bodonga lombhobho wempundu δ20mm ibonisiwe kuMfanekiso E.1
I-E.2 i-butt weld groove yeevalvu ezinobunzima bodonga lombhobho oyi-20mm ≤δ≤40mm ibonisiwe kumzobo e. 2
E.3 I-butt weld groove uhlobo lweevalvu ezahlukeneyo ezinobungqingqwa bodonga lombhobho wempundu δ40mm ibonisiwe kuMfanekiso E.3
E.4 Imilinganiselo ye-D1, i-D2 kunye ne-D3 kwi-Figure E1, i-Figure E.2 kunye ne-Figure E.3 ayinikwanga, egqitywe ngumzobo woyilo. I-D1 ilingana nobukhulu obusisiseko bombhobho wangaphakathi, kwaye D: ingabalwa kule fomula ilandelayo:
Uhlobo:
Umbhobho ongaphandle we-DW-1:
A – Ixabiso elongeziweyo liya kumiselwa ngumyili ngokubhekisele kwiTheyibhile E.1.
Itheyibhile E.1 Ixabiso elongeziweyo le-butt weld groove dimension D2
E.5 Xa udibaniso lwe weld phakathi komzimba wevalve kunye nombhobho weld weld, isiphelo segroove siya kwenziwa kwangaphambili lisebe lokwenziwa kwevalvu.
E.6 Indlela ye-welding ye-butt weld ye-valve ye-welding body end kufuneka ithathe i-hand arc welding, i-hydrogen arc welding kunye ne-hand arc welding okanye enye indlela ye-welding efanelekileyo ngovavanyo lwenkqubo.
Qaphela 1: Xa i-Lo≥1.5δ, i-engile inokutshixwa ku-Lo=1.5δ njengoko kubonisiwe kwi-45° ithambeka.
Qaphela 2: Umjelo womzimba wevalve yentsimbi enedayamitha yesiqhelo DN≥150mm iya kuba yi-L1=40mm yokuhlolwa kweradiyographic, L1=12mm kwezinye iimeko.
IKHIWANE. E.1 Uhlobo lwe-V-shaped groove
Qaphela 1: Xa i-Lo≥1.5δ, i-engile inokutshixwa ku-Lo=1.5δ njengoko kubonisiwe kwi-45° ithambeka.
Qaphela 2: Umjelo womzimba wevalve yentsimbi enedayamitha yesiqhelo DN≥150mm iya kuba yi-L1=40mm yokuhlolwa kweradiyographic, L1=12mm kwezinye iimeko.
IKHIWANE. E.2 Uhlobo lomsele omilise u-U
Umfanekiso E.3 U(1) uhlobo lomsele
IsiHlomelo F
(Isihlomelo esinolwazi)
Metal nameplate
F.1 Itheyibhile F.1 ibonisa imixholo yeepleyiti zesinyithi kwiivalvu zeglowubhu, iivalvu zokutshekisha, iivalvu zesango, iivalvu ze-throttle kunye neevalvu zeplagi.
Itheyibhile F.1 Iipleyiti zesinyithi zeevalvu zeglowubhu, iivalvu zetshekhi, iivalvu zesango, iivalvu ze-throttle, iivalve zeplagi, njl.
F.2 Itheyibhile F.2 ibonisa umxholo we-metal nameplate yomlawuli
Itheyibhile F.2 Isiqulatho sesinyithi somlawuli
F.3 Itheyibhile F.3 ibonisa umxholo wentsimbi yevalve yokhuseleko
Itheyibhile F.3 Icwecwe lentsimbi yevalvu yokhuseleko
F.4 Itheyibhile F.4 ibonisa umxholo wegama lentsimbi yevalve yokunciphisa uxinzelelo
Itheyibhile F.4 I-Metal nameplate yevalve yokunciphisa uxinzelelo
F.5 Itheyibhile F.5 ibonisa i-metal nameplate yobushushu kunye nevalve yokunciphisa uxinzelelo.
Itheyibhile F.5 I-Metal nameplate yobushushu kunye nevalve yokunciphisa uxinzelelo