1. Nitrogen Pipeline kev tsim kho yuav tsum ua raws li cov specifications
"Kev qhia tshwj xeeb rau kev lag luam hlau xa pipeline engineering thiab lees txais"
"Cov chaw nres tsheb oxyegegen tsim kev tshwj xeeb"
"Cov kev cai ntawm kev tswj hwm kev nyab xeeb thiab kev saib xyuas ntawm lub siab xa khoom"
"Kev qhia tshwj xeeb rau kev ua kom haum engineering thiab kev lees txais"
"Kev qhia tshwj xeeb rau kev tsim kho thiab kev lees txais ntawm vuam engineering ntawm cov khoom teb thiab khoom lag luam"
2. Kev xa khoom thiab cov khoom ntxiv yuav tsum tau
2.1 Tag nrho cov kav dej, cov yeeb nkab fittings, thiab li qub yuav tsum muaj cov ntawv pov thawj ua ex-Hoobkas. Txwv tsis pub, khij cov khoom uas ploj lawm thiab lawv cov qauv yuav tsum ua kom tau raws li National National lossis Cov Qauv Nov Tswv.
2. 2 Tag nrho cov raj xa khoom thiab cov khoom siv yuav tsum tau kuaj xyuas, xws li seb puas muaj cov kab nrib pleb, shrinkage qhov chaw thiab tawv tawv kom ntseeg tau tias qhov chaw du thiab huv; Rau li qub, lub zog thiab nruj kev xeem yuav tsum tau nqa tawm ib qho los ntawm ib (qhov kev ntsuas siab yog lub sijhawm nrov 1.5 Lub siab tuav sijhawm tsis tsawg dua 5 feeb); Valve valve yuav tsum yog debugged ntau dua 3 zaug raws li cov kev cai tswj.
3. Yeeb Nkab Vuam
3.1 Ntxiv rau kev sib ntsib cov kev cai, kev siv vuam txuj ci yuav tsum tau ua raws li cov cai tswj hwm thoob ntiaj teb.
3.2 Cov Welds yuav tsum tau tshuaj xyuas los ntawm Radocegraphic lossis ultrasonic nyob rau hauv raws li qhov muaj nuj nqis thiab theem zoo.
3.3 Welded Carbon Kav Hlau yuav tsum tau thaub qab nrog Argon arc.
4. Pipeline Degretze thiab Rust Tshem Tawm
Siv sandblasting thiab pickling kom tshem tawm xeb thiab degrease sab hauv phab ntsa ntawm cov raj xa dej.
5. Kev tiv thaiv rau cov yeeb nkab teeb tsa
5.1 Thaum cov raj xa hluav taws xob txuas nrog, nws yuav tsum tsis txhob siv zog yuam.
5.2 Khij qhov ncaj ntawm lub pob tw khawm txuas ntawm lub nozzle. Kev ntsuas chaw nres nkoj ntawm qhov deb ntawm 200 hli. Kev pub muaj kev pub dawb yog 1mm / m, tag nrho ntev kev sib txawv yog tsawg dua 10mm, thiab kev sib txuas ntawm cov flanges yuav tsum tau nyob rau hauv ib puag ncig.
5.3. Siv cov txuas xov txuas rau cov PTFE nrog ntim, thiab nws yog txwv tsis pub siv cov roj sesame.
5.4. Cov yeeb nkab thiab kev txhawb nqa yuav tsum tau sib cais los ntawm cov tsis-chloride ion yas ntawv yas; Cov yeeb nkab los ntawm phab ntsa yuav tsum tau pw, thiab lub tes tsho ntev yuav tsum tsis pub tsawg tshaj li ntawm phab ntsa tuab, thiab cov kis yuav tsum tau sau nrog cov ntaub ntawv tsis sib xyaw.
5.5. Cov kav dej nitrogen yuav tsum muaj xob laim kev tiv thaiv thiab kev tawm hauv cov khoom siv hluav taws xob.
5.6. Lub qhov tob ntawm cov raj xa dej tsis tsawg tshaj 0.7m (sab saum toj ntawm cov raj xa dej yog saum toj no hauv av), thiab cov raj xa dej uas faus yuav tsum tau kho nrog anticorrosion.
6. Kev ntsuam xyuas hluav taws xob siab thiab ntxuav
Tom qab cov raj xa hluav taws xob tau nruab, ua lub zog thiab kev ntsuas nruj, thiab cov cai muaj raws li hauv qab no:
| Ua Haujlwm Siab | Lub Zog Kev Ntsuas | Kev kuaj | ||
| MPa | ||||
| Koom haum tshaj xov | Siab (mpa) | Koom haum tshaj xov | Siab (mpa) | |
| <0.1 | Cua | 0.1 | Cua lossis n2 | 1 |
| ≤3 | cua | 1.15 | Cua lossis n2 | 1 |
| ywg dej | 1.25 | |||
| 150 Cov Ntaub Ntawv | ywg dej | 1.25 | Cua lossis n2 | 1 |
| 15 | ywg dej | 1.15 | Cua lossis n2 | 1 |
Nco tseg:
①air thiab nitrogen yuav tsum qhuav thiab roj-dawb;
② muab cov dej dawb huv, cov tshuaj chloride ion cov ntsiab lus ntawm cov dej tsis tshaj 2.5g / m3;
Kev siv cov kev ntsuam xyuas qhov kev kuaj siab yuav tsum tau ua kom qeeb ntawm cov kauj ruam. Thaum nws nce mus rau 5%, nws yuav tsum tau soj ntsuam. Yog tias tsis muaj kev xau lossis tsis muaj zog, lub siab yuav tsum nce qib zuj zus los ntawm kauj ruam ntawm 10% siab, thiab qhov ntsuas hluav taws xob, thiab cov hluav taws xob voltage rau txhua kauj ruam. Tom qab ncav cuag lub siab, nws yuav tsum tau tswj hwm rau 5 feeb, thiab nws yog tsim nyog thaum tsis muaj deformation.
④ Qhov kev xeem nruj yuav ntev mus txog 24 teev tom qab ncav cuag lub siab, thiab lub sijhawm nruab nrab todly tus nqi rau sab hauv tsev thiab trench Pipelines yuav tsum yog ≤0.5% raws li tsim nyog.
⑤⑤ter dhau qhov ntsuas nruj, siv cov roj kom qhuav qhuav lossis cov pa dej ntws tsawg dua 20m / s, vuam slag thiab lwm yam khib nyiab hauv cov raj dej.
7. Kev pleev xim pipeline thiab ua haujlwm ua ntej ntau lawm:
7.1. Tus xeb, vuam slag, burr thiab lwm yam impurities ntawm cov xim pleev xim yuav tsum tau muab tshem tawm ua ntej tha xim.
7.2. Hloov nrog nitrogen ua ntej muab tso rau hauv ntau lawm kom txog thaum lub purity yog tsim nyog.
Lub Sijhawm Post: Jun-25-2021